From bb9c149d30f983c3ca02415d0a100944c8327c9f Mon Sep 17 00:00:00 2001 From: Jack Date: Wed, 27 Nov 2019 22:16:59 -0500 Subject: [PATCH] Added initial version of admin read page. Including pdf.js basic stuff. --- Documents.html | 2 +- ViewerJS/compatibility.js | 577 + ViewerJS/example.local.css | 27 + ViewerJS/images/kogmbh.png | Bin 0 -> 2835 bytes ViewerJS/images/nlnet.png | Bin 0 -> 5400 bytes ViewerJS/images/texture.png | Bin 0 -> 2459 bytes ViewerJS/images/toolbarButton-download.png | Bin 0 -> 512 bytes ViewerJS/images/toolbarButton-fullscreen.png | Bin 0 -> 491 bytes ViewerJS/images/toolbarButton-menuArrows.png | Bin 0 -> 237 bytes ViewerJS/images/toolbarButton-pageDown.png | Bin 0 -> 353 bytes ViewerJS/images/toolbarButton-pageUp.png | Bin 0 -> 344 bytes .../images/toolbarButton-presentation.png | Bin 0 -> 4366 bytes ViewerJS/images/toolbarButton-zoomIn.png | Bin 0 -> 228 bytes ViewerJS/images/toolbarButton-zoomOut.png | Bin 0 -> 143 bytes ViewerJS/index.html | 145 + ViewerJS/pdf.js | 8052 ++++ ViewerJS/pdf.worker.js | 39353 ++++++++++++++++ ViewerJS/pdfjsversion.js | 1 + ViewerJS/test.pdf | Bin 0 -> 69291 bytes ViewerJS/text_layer_builder.js | 419 + ViewerJS/ui_utils.js | 394 + ViewerJS/webodf.js | 936 + read.html | 63 + 23 files changed, 49968 insertions(+), 1 deletion(-) create mode 100644 ViewerJS/compatibility.js create mode 100644 ViewerJS/example.local.css create mode 100644 ViewerJS/images/kogmbh.png create mode 100644 ViewerJS/images/nlnet.png create mode 100644 ViewerJS/images/texture.png create mode 100644 ViewerJS/images/toolbarButton-download.png create mode 100644 ViewerJS/images/toolbarButton-fullscreen.png create mode 100644 ViewerJS/images/toolbarButton-menuArrows.png create mode 100644 ViewerJS/images/toolbarButton-pageDown.png create mode 100644 ViewerJS/images/toolbarButton-pageUp.png create mode 100644 ViewerJS/images/toolbarButton-presentation.png create mode 100644 ViewerJS/images/toolbarButton-zoomIn.png create mode 100644 ViewerJS/images/toolbarButton-zoomOut.png create mode 100644 ViewerJS/index.html create mode 100644 ViewerJS/pdf.js create mode 100644 ViewerJS/pdf.worker.js create mode 100644 ViewerJS/pdfjsversion.js create mode 100644 ViewerJS/test.pdf create mode 100644 ViewerJS/text_layer_builder.js create mode 100644 ViewerJS/ui_utils.js create mode 100644 ViewerJS/webodf.js create mode 100644 read.html diff --git a/Documents.html b/Documents.html index 3764507..9c57a4e 100644 --- a/Documents.html +++ b/Documents.html @@ -17,7 +17,7 @@
- +

Username

diff --git a/ViewerJS/compatibility.js b/ViewerJS/compatibility.js new file mode 100644 index 0000000..06f54bf --- /dev/null +++ b/ViewerJS/compatibility.js @@ -0,0 +1,577 @@ +/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ +/* Copyright 2012 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* globals VBArray, PDFJS */ + +'use strict'; + +// Initializing PDFJS global object here, it case if we need to change/disable +// some PDF.js features, e.g. range requests +if (typeof PDFJS === 'undefined') { + (typeof window !== 'undefined' ? window : this).PDFJS = {}; +} + +// Checking if the typed arrays are supported +// Support: iOS<6.0 (subarray), IE<10, Android<4.0 +(function checkTypedArrayCompatibility() { + if (typeof Uint8Array !== 'undefined') { + // Support: iOS<6.0 + if (typeof Uint8Array.prototype.subarray === 'undefined') { + Uint8Array.prototype.subarray = function subarray(start, end) { + return new Uint8Array(this.slice(start, end)); + }; + Float32Array.prototype.subarray = function subarray(start, end) { + return new Float32Array(this.slice(start, end)); + }; + } + + // Support: Android<4.1 + if (typeof Float64Array === 'undefined') { + window.Float64Array = Float32Array; + } + return; + } + + function subarray(start, end) { + return new TypedArray(this.slice(start, end)); + } + + function setArrayOffset(array, offset) { + if (arguments.length < 2) { + offset = 0; + } + for (var i = 0, n = array.length; i < n; ++i, ++offset) { + this[offset] = array[i] & 0xFF; + } + } + + function TypedArray(arg1) { + var result, i, n; + if (typeof arg1 === 'number') { + result = []; + for (i = 0; i < arg1; ++i) { + result[i] = 0; + } + } else if ('slice' in arg1) { + result = arg1.slice(0); + } else { + result = []; + for (i = 0, n = arg1.length; i < n; ++i) { + result[i] = arg1[i]; + } + } + + result.subarray = subarray; + result.buffer = result; + result.byteLength = result.length; + result.set = setArrayOffset; + + if (typeof arg1 === 'object' && arg1.buffer) { + result.buffer = arg1.buffer; + } + return result; + } + + window.Uint8Array = TypedArray; + window.Int8Array = TypedArray; + + // we don't need support for set, byteLength for 32-bit array + // so we can use the TypedArray as well + window.Uint32Array = TypedArray; + window.Int32Array = TypedArray; + window.Uint16Array = TypedArray; + window.Float32Array = TypedArray; + window.Float64Array = TypedArray; +})(); + +// URL = URL || webkitURL +// Support: Safari<7, Android 4.2+ +(function normalizeURLObject() { + if (!window.URL) { + window.URL = window.webkitURL; + } +})(); + +// Object.defineProperty()? +// Support: Android<4.0, Safari<5.1 +(function checkObjectDefinePropertyCompatibility() { + if (typeof Object.defineProperty !== 'undefined') { + var definePropertyPossible = true; + try { + // some browsers (e.g. safari) cannot use defineProperty() on DOM objects + // and thus the native version is not sufficient + Object.defineProperty(new Image(), 'id', { value: 'test' }); + // ... another test for android gb browser for non-DOM objects + var Test = function Test() {}; + Test.prototype = { get id() { } }; + Object.defineProperty(new Test(), 'id', + { value: '', configurable: true, enumerable: true, writable: false }); + } catch (e) { + definePropertyPossible = false; + } + if (definePropertyPossible) { + return; + } + } + + Object.defineProperty = function objectDefineProperty(obj, name, def) { + delete obj[name]; + if ('get' in def) { + obj.__defineGetter__(name, def['get']); + } + if ('set' in def) { + obj.__defineSetter__(name, def['set']); + } + if ('value' in def) { + obj.__defineSetter__(name, function objectDefinePropertySetter(value) { + this.__defineGetter__(name, function objectDefinePropertyGetter() { + return value; + }); + return value; + }); + obj[name] = def.value; + } + }; +})(); + + +// No XMLHttpRequest#response? +// Support: IE<11, Android <4.0 +(function checkXMLHttpRequestResponseCompatibility() { + var xhrPrototype = XMLHttpRequest.prototype; + var xhr = new XMLHttpRequest(); + if (!('overrideMimeType' in xhr)) { + // IE10 might have response, but not overrideMimeType + // Support: IE10 + Object.defineProperty(xhrPrototype, 'overrideMimeType', { + value: function xmlHttpRequestOverrideMimeType(mimeType) {} + }); + } + if ('responseType' in xhr) { + return; + } + + // The worker will be using XHR, so we can save time and disable worker. + PDFJS.disableWorker = true; + + Object.defineProperty(xhrPrototype, 'responseType', { + get: function xmlHttpRequestGetResponseType() { + return this._responseType || 'text'; + }, + set: function xmlHttpRequestSetResponseType(value) { + if (value === 'text' || value === 'arraybuffer') { + this._responseType = value; + if (value === 'arraybuffer' && + typeof this.overrideMimeType === 'function') { + this.overrideMimeType('text/plain; charset=x-user-defined'); + } + } + } + }); + + // Support: IE9 + if (typeof VBArray !== 'undefined') { + Object.defineProperty(xhrPrototype, 'response', { + get: function xmlHttpRequestResponseGet() { + if (this.responseType === 'arraybuffer') { + return new Uint8Array(new VBArray(this.responseBody).toArray()); + } else { + return this.responseText; + } + } + }); + return; + } + + Object.defineProperty(xhrPrototype, 'response', { + get: function xmlHttpRequestResponseGet() { + if (this.responseType !== 'arraybuffer') { + return this.responseText; + } + var text = this.responseText; + var i, n = text.length; + var result = new Uint8Array(n); + for (i = 0; i < n; ++i) { + result[i] = text.charCodeAt(i) & 0xFF; + } + return result.buffer; + } + }); +})(); + +// window.btoa (base64 encode function) ? +// Support: IE<10 +(function checkWindowBtoaCompatibility() { + if ('btoa' in window) { + return; + } + + var digits = + 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; + + window.btoa = function windowBtoa(chars) { + var buffer = ''; + var i, n; + for (i = 0, n = chars.length; i < n; i += 3) { + var b1 = chars.charCodeAt(i) & 0xFF; + var b2 = chars.charCodeAt(i + 1) & 0xFF; + var b3 = chars.charCodeAt(i + 2) & 0xFF; + var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4); + var d3 = i + 1 < n ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64; + var d4 = i + 2 < n ? (b3 & 0x3F) : 64; + buffer += (digits.charAt(d1) + digits.charAt(d2) + + digits.charAt(d3) + digits.charAt(d4)); + } + return buffer; + }; +})(); + +// window.atob (base64 encode function)? +// Support: IE<10 +(function checkWindowAtobCompatibility() { + if ('atob' in window) { + return; + } + + // https://github.com/davidchambers/Base64.js + var digits = + 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; + window.atob = function (input) { + input = input.replace(/=+$/, ''); + if (input.length % 4 === 1) { + throw new Error('bad atob input'); + } + for ( + // initialize result and counters + var bc = 0, bs, buffer, idx = 0, output = ''; + // get next character + buffer = input.charAt(idx++); + // character found in table? + // initialize bit storage and add its ascii value + ~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer, + // and if not first of each 4 characters, + // convert the first 8 bits to one ascii character + bc++ % 4) ? output += String.fromCharCode(255 & bs >> (-2 * bc & 6)) : 0 + ) { + // try to find character in table (0-63, not found => -1) + buffer = digits.indexOf(buffer); + } + return output; + }; +})(); + +// Function.prototype.bind? +// Support: Android<4.0, iOS<6.0 +(function checkFunctionPrototypeBindCompatibility() { + if (typeof Function.prototype.bind !== 'undefined') { + return; + } + + Function.prototype.bind = function functionPrototypeBind(obj) { + var fn = this, headArgs = Array.prototype.slice.call(arguments, 1); + var bound = function functionPrototypeBindBound() { + var args = headArgs.concat(Array.prototype.slice.call(arguments)); + return fn.apply(obj, args); + }; + return bound; + }; +})(); + +// HTMLElement dataset property +// Support: IE<11, Safari<5.1, Android<4.0 +(function checkDatasetProperty() { + var div = document.createElement('div'); + if ('dataset' in div) { + return; // dataset property exists + } + + Object.defineProperty(HTMLElement.prototype, 'dataset', { + get: function() { + if (this._dataset) { + return this._dataset; + } + + var dataset = {}; + for (var j = 0, jj = this.attributes.length; j < jj; j++) { + var attribute = this.attributes[j]; + if (attribute.name.substring(0, 5) !== 'data-') { + continue; + } + var key = attribute.name.substring(5).replace(/\-([a-z])/g, + function(all, ch) { + return ch.toUpperCase(); + }); + dataset[key] = attribute.value; + } + + Object.defineProperty(this, '_dataset', { + value: dataset, + writable: false, + enumerable: false + }); + return dataset; + }, + enumerable: true + }); +})(); + +// HTMLElement classList property +// Support: IE<10, Android<4.0, iOS<5.0 +(function checkClassListProperty() { + var div = document.createElement('div'); + if ('classList' in div) { + return; // classList property exists + } + + function changeList(element, itemName, add, remove) { + var s = element.className || ''; + var list = s.split(/\s+/g); + if (list[0] === '') { + list.shift(); + } + var index = list.indexOf(itemName); + if (index < 0 && add) { + list.push(itemName); + } + if (index >= 0 && remove) { + list.splice(index, 1); + } + element.className = list.join(' '); + return (index >= 0); + } + + var classListPrototype = { + add: function(name) { + changeList(this.element, name, true, false); + }, + contains: function(name) { + return changeList(this.element, name, false, false); + }, + remove: function(name) { + changeList(this.element, name, false, true); + }, + toggle: function(name) { + changeList(this.element, name, true, true); + } + }; + + Object.defineProperty(HTMLElement.prototype, 'classList', { + get: function() { + if (this._classList) { + return this._classList; + } + + var classList = Object.create(classListPrototype, { + element: { + value: this, + writable: false, + enumerable: true + } + }); + Object.defineProperty(this, '_classList', { + value: classList, + writable: false, + enumerable: false + }); + return classList; + }, + enumerable: true + }); +})(); + +// Check console compatibility +// In older IE versions the console object is not available +// unless console is open. +// Support: IE<10 +(function checkConsoleCompatibility() { + if (!('console' in window)) { + window.console = { + log: function() {}, + error: function() {}, + warn: function() {} + }; + } else if (!('bind' in console.log)) { + // native functions in IE9 might not have bind + console.log = (function(fn) { + return function(msg) { return fn(msg); }; + })(console.log); + console.error = (function(fn) { + return function(msg) { return fn(msg); }; + })(console.error); + console.warn = (function(fn) { + return function(msg) { return fn(msg); }; + })(console.warn); + } +})(); + +// Check onclick compatibility in Opera +// Support: Opera<15 +(function checkOnClickCompatibility() { + // workaround for reported Opera bug DSK-354448: + // onclick fires on disabled buttons with opaque content + function ignoreIfTargetDisabled(event) { + if (isDisabled(event.target)) { + event.stopPropagation(); + } + } + function isDisabled(node) { + return node.disabled || (node.parentNode && isDisabled(node.parentNode)); + } + if (navigator.userAgent.indexOf('Opera') !== -1) { + // use browser detection since we cannot feature-check this bug + document.addEventListener('click', ignoreIfTargetDisabled, true); + } +})(); + +// Checks if possible to use URL.createObjectURL() +// Support: IE +(function checkOnBlobSupport() { + // sometimes IE loosing the data created with createObjectURL(), see #3977 + if (navigator.userAgent.indexOf('Trident') >= 0) { + PDFJS.disableCreateObjectURL = true; + } +})(); + +// Checks if navigator.language is supported +(function checkNavigatorLanguage() { + if ('language' in navigator) { + return; + } + PDFJS.locale = navigator.userLanguage || 'en-US'; +})(); + +(function checkRangeRequests() { + // Safari has issues with cached range requests see: + // https://github.com/mozilla/pdf.js/issues/3260 + // Last tested with version 6.0.4. + // Support: Safari 6.0+ + var isSafari = Object.prototype.toString.call( + window.HTMLElement).indexOf('Constructor') > 0; + + // Older versions of Android (pre 3.0) has issues with range requests, see: + // https://github.com/mozilla/pdf.js/issues/3381. + // Make sure that we only match webkit-based Android browsers, + // since Firefox/Fennec works as expected. + // Support: Android<3.0 + var regex = /Android\s[0-2][^\d]/; + var isOldAndroid = regex.test(navigator.userAgent); + + // Range requests are broken in Chrome 39 and 40, https://crbug.com/442318 + var isChromeWithRangeBug = /Chrome\/(39|40)\./.test(navigator.userAgent); + + if (isSafari || isOldAndroid || isChromeWithRangeBug) { + PDFJS.disableRange = true; + PDFJS.disableStream = true; + } +})(); + +// Check if the browser supports manipulation of the history. +// Support: IE<10, Android<4.2 +(function checkHistoryManipulation() { + // Android 2.x has so buggy pushState support that it was removed in + // Android 3.0 and restored as late as in Android 4.2. + // Support: Android 2.x + if (!history.pushState || navigator.userAgent.indexOf('Android 2.') >= 0) { + PDFJS.disableHistory = true; + } +})(); + +// Support: IE<11, Chrome<21, Android<4.4, Safari<6 +(function checkSetPresenceInImageData() { + // IE < 11 will use window.CanvasPixelArray which lacks set function. + if (window.CanvasPixelArray) { + if (typeof window.CanvasPixelArray.prototype.set !== 'function') { + window.CanvasPixelArray.prototype.set = function(arr) { + for (var i = 0, ii = this.length; i < ii; i++) { + this[i] = arr[i]; + } + }; + } + } else { + // Old Chrome and Android use an inaccessible CanvasPixelArray prototype. + // Because we cannot feature detect it, we rely on user agent parsing. + var polyfill = false, versionMatch; + if (navigator.userAgent.indexOf('Chrom') >= 0) { + versionMatch = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./); + // Chrome < 21 lacks the set function. + polyfill = versionMatch && parseInt(versionMatch[2]) < 21; + } else if (navigator.userAgent.indexOf('Android') >= 0) { + // Android < 4.4 lacks the set function. + // Android >= 4.4 will contain Chrome in the user agent, + // thus pass the Chrome check above and not reach this block. + polyfill = /Android\s[0-4][^\d]/g.test(navigator.userAgent); + } else if (navigator.userAgent.indexOf('Safari') >= 0) { + versionMatch = navigator.userAgent. + match(/Version\/([0-9]+)\.([0-9]+)\.([0-9]+) Safari\//); + // Safari < 6 lacks the set function. + polyfill = versionMatch && parseInt(versionMatch[1]) < 6; + } + + if (polyfill) { + var contextPrototype = window.CanvasRenderingContext2D.prototype; + contextPrototype._createImageData = contextPrototype.createImageData; + contextPrototype.createImageData = function(w, h) { + var imageData = this._createImageData(w, h); + imageData.data.set = function(arr) { + for (var i = 0, ii = this.length; i < ii; i++) { + this[i] = arr[i]; + } + }; + return imageData; + }; + } + } +})(); + +// Support: IE<10, Android<4.0, iOS +(function checkRequestAnimationFrame() { + function fakeRequestAnimationFrame(callback) { + window.setTimeout(callback, 20); + } + + var isIOS = /(iPad|iPhone|iPod)/g.test(navigator.userAgent); + if (isIOS) { + // requestAnimationFrame on iOS is broken, replacing with fake one. + window.requestAnimationFrame = fakeRequestAnimationFrame; + return; + } + if ('requestAnimationFrame' in window) { + return; + } + window.requestAnimationFrame = + window.mozRequestAnimationFrame || + window.webkitRequestAnimationFrame || + fakeRequestAnimationFrame; +})(); + +(function checkCanvasSizeLimitation() { + var isIOS = /(iPad|iPhone|iPod)/g.test(navigator.userAgent); + var isAndroid = /Android/g.test(navigator.userAgent); + if (isIOS || isAndroid) { + // 5MP + PDFJS.maxCanvasPixels = 5242880; + } +})(); + +// Disable fullscreen support for certain problematic configurations. +// Support: IE11+ (when embedded). +(function checkFullscreenSupport() { + var isEmbeddedIE = (navigator.userAgent.indexOf('Trident') >= 0 && + window.parent !== window); + if (isEmbeddedIE) { + PDFJS.disableFullscreen = true; + } +})(); diff --git a/ViewerJS/example.local.css b/ViewerJS/example.local.css new file mode 100644 index 0000000..034347d --- /dev/null +++ b/ViewerJS/example.local.css @@ -0,0 +1,27 @@ +/* This is just a sample file with CSS rules. You should write your own @font-face declarations + * to add support for your desired fonts. + */ + +@font-face { + font-family: 'Novecentowide Book'; + src: url("/ViewerJS/fonts/Novecentowide-Bold-webfont.eot"); + src: url("/ViewerJS/fonts/Novecentowide-Bold-webfont.eot?#iefix") format("embedded-opentype"), + url("/ViewerJS/fonts/Novecentowide-Bold-webfont.woff") format("woff"), + url("/fonts/Novecentowide-Bold-webfont.ttf") format("truetype"), + url("/fonts/Novecentowide-Bold-webfont.svg#NovecentowideBookBold") format("svg"); + font-weight: normal; + font-style: normal; +} + +@font-face { + font-family: 'exotica'; + src: url('/ViewerJS/fonts/Exotica-webfont.eot'); + src: url('/ViewerJS/fonts/Exotica-webfont.eot?#iefix') format('embedded-opentype'), + url('/ViewerJS/fonts/Exotica-webfont.woff') format('woff'), + url('/ViewerJS/fonts/Exotica-webfont.ttf') format('truetype'), + url('/ViewerJS/fonts/Exotica-webfont.svg#exoticamedium') format('svg'); + font-weight: normal; + font-style: 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+ + diff --git a/ViewerJS/pdf.js b/ViewerJS/pdf.js new file mode 100644 index 0000000..463d7d0 --- /dev/null +++ b/ViewerJS/pdf.js @@ -0,0 +1,8052 @@ +/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ +/* Copyright 2012 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/*jshint globalstrict: false */ +/* globals PDFJS */ + +// Initializing PDFJS global object (if still undefined) +if (typeof PDFJS === 'undefined') { + (typeof window !== 'undefined' ? window : this).PDFJS = {}; +} + +PDFJS.version = '1.1.114'; +PDFJS.build = '3fd44fd'; + +(function pdfjsWrapper() { + // Use strict in our context only - users might not want it + 'use strict'; + +/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ +/* Copyright 2012 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* globals Cmd, ColorSpace, Dict, MozBlobBuilder, Name, PDFJS, Ref, URL, + Promise */ + +'use strict'; + +var globalScope = (typeof window === 'undefined') ? this : window; + +var isWorker = (typeof window === 'undefined'); + +var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0]; + +var TextRenderingMode = { + FILL: 0, + STROKE: 1, + FILL_STROKE: 2, + INVISIBLE: 3, + FILL_ADD_TO_PATH: 4, + STROKE_ADD_TO_PATH: 5, + FILL_STROKE_ADD_TO_PATH: 6, + ADD_TO_PATH: 7, + FILL_STROKE_MASK: 3, + ADD_TO_PATH_FLAG: 4 +}; + +var ImageKind = { + GRAYSCALE_1BPP: 1, + RGB_24BPP: 2, + RGBA_32BPP: 3 +}; + +var AnnotationType = { + WIDGET: 1, + TEXT: 2, + LINK: 3 +}; + +var StreamType = { + UNKNOWN: 0, + FLATE: 1, + LZW: 2, + DCT: 3, + JPX: 4, + JBIG: 5, + A85: 6, + AHX: 7, + CCF: 8, + RL: 9 +}; + +var FontType = { + UNKNOWN: 0, + TYPE1: 1, + TYPE1C: 2, + CIDFONTTYPE0: 3, + CIDFONTTYPE0C: 4, + TRUETYPE: 5, + CIDFONTTYPE2: 6, + TYPE3: 7, + OPENTYPE: 8, + TYPE0: 9, + MMTYPE1: 10 +}; + +// The global PDFJS object exposes the API +// In production, it will be declared outside a global wrapper +// In development, it will be declared here +if (!globalScope.PDFJS) { + globalScope.PDFJS = {}; +} + +globalScope.PDFJS.pdfBug = false; + +PDFJS.VERBOSITY_LEVELS = { + errors: 0, + warnings: 1, + infos: 5 +}; + +// All the possible operations for an operator list. +var OPS = PDFJS.OPS = { + // Intentionally start from 1 so it is easy to spot bad operators that will be + // 0's. + dependency: 1, + setLineWidth: 2, + setLineCap: 3, + setLineJoin: 4, + setMiterLimit: 5, + setDash: 6, + setRenderingIntent: 7, + setFlatness: 8, + setGState: 9, + save: 10, + restore: 11, + transform: 12, + moveTo: 13, + lineTo: 14, + curveTo: 15, + curveTo2: 16, + curveTo3: 17, + closePath: 18, + rectangle: 19, + stroke: 20, + closeStroke: 21, + fill: 22, + eoFill: 23, + fillStroke: 24, + eoFillStroke: 25, + closeFillStroke: 26, + closeEOFillStroke: 27, + endPath: 28, + clip: 29, + eoClip: 30, + beginText: 31, + endText: 32, + setCharSpacing: 33, + setWordSpacing: 34, + setHScale: 35, + setLeading: 36, + setFont: 37, + setTextRenderingMode: 38, + setTextRise: 39, + moveText: 40, + setLeadingMoveText: 41, + setTextMatrix: 42, + nextLine: 43, + showText: 44, + showSpacedText: 45, + nextLineShowText: 46, + nextLineSetSpacingShowText: 47, + setCharWidth: 48, + setCharWidthAndBounds: 49, + setStrokeColorSpace: 50, + setFillColorSpace: 51, + setStrokeColor: 52, + setStrokeColorN: 53, + setFillColor: 54, + setFillColorN: 55, + setStrokeGray: 56, + setFillGray: 57, + setStrokeRGBColor: 58, + setFillRGBColor: 59, + setStrokeCMYKColor: 60, + setFillCMYKColor: 61, + shadingFill: 62, + beginInlineImage: 63, + beginImageData: 64, + endInlineImage: 65, + paintXObject: 66, + markPoint: 67, + markPointProps: 68, + beginMarkedContent: 69, + beginMarkedContentProps: 70, + endMarkedContent: 71, + beginCompat: 72, + endCompat: 73, + paintFormXObjectBegin: 74, + paintFormXObjectEnd: 75, + beginGroup: 76, + endGroup: 77, + beginAnnotations: 78, + endAnnotations: 79, + beginAnnotation: 80, + endAnnotation: 81, + paintJpegXObject: 82, + paintImageMaskXObject: 83, + paintImageMaskXObjectGroup: 84, + paintImageXObject: 85, + paintInlineImageXObject: 86, + paintInlineImageXObjectGroup: 87, + paintImageXObjectRepeat: 88, + paintImageMaskXObjectRepeat: 89, + paintSolidColorImageMask: 90, + constructPath: 91 +}; + +// A notice for devs. These are good for things that are helpful to devs, such +// as warning that Workers were disabled, which is important to devs but not +// end users. +function info(msg) { + if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.infos) { + console.log('Info: ' + msg); + } +} + +// Non-fatal warnings. +function warn(msg) { + if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.warnings) { + console.log('Warning: ' + msg); + } +} + +// Fatal errors that should trigger the fallback UI and halt execution by +// throwing an exception. +function error(msg) { + if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.errors) { + console.log('Error: ' + msg); + console.log(backtrace()); + } + UnsupportedManager.notify(UNSUPPORTED_FEATURES.unknown); + throw new Error(msg); +} + +function backtrace() { + try { + throw new Error(); + } catch (e) { + return e.stack ? e.stack.split('\n').slice(2).join('\n') : ''; + } +} + +function assert(cond, msg) { + if (!cond) { + error(msg); + } +} + +var UNSUPPORTED_FEATURES = PDFJS.UNSUPPORTED_FEATURES = { + unknown: 'unknown', + forms: 'forms', + javaScript: 'javaScript', + smask: 'smask', + shadingPattern: 'shadingPattern', + font: 'font' +}; + +var UnsupportedManager = PDFJS.UnsupportedManager = + (function UnsupportedManagerClosure() { + var listeners = []; + return { + listen: function (cb) { + listeners.push(cb); + }, + notify: function (featureId) { + warn('Unsupported feature "' + featureId + '"'); + for (var i = 0, ii = listeners.length; i < ii; i++) { + listeners[i](featureId); + } + } + }; +})(); + +// Combines two URLs. The baseUrl shall be absolute URL. If the url is an +// absolute URL, it will be returned as is. +function combineUrl(baseUrl, url) { + if (!url) { + return baseUrl; + } + if (/^[a-z][a-z0-9+\-.]*:/i.test(url)) { + return url; + } + var i; + if (url.charAt(0) === '/') { + // absolute path + i = baseUrl.indexOf('://'); + if (url.charAt(1) === '/') { + ++i; + } else { + i = baseUrl.indexOf('/', i + 3); + } + return baseUrl.substring(0, i) + url; + } else { + // relative path + var pathLength = baseUrl.length; + i = baseUrl.lastIndexOf('#'); + pathLength = i >= 0 ? i : pathLength; + i = baseUrl.lastIndexOf('?', pathLength); + pathLength = i >= 0 ? i : pathLength; + var prefixLength = baseUrl.lastIndexOf('/', pathLength); + return baseUrl.substring(0, prefixLength + 1) + url; + } +} + +// Validates if URL is safe and allowed, e.g. to avoid XSS. +function isValidUrl(url, allowRelative) { + if (!url) { + return false; + } + // RFC 3986 (http://tools.ietf.org/html/rfc3986#section-3.1) + // scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) + var protocol = /^[a-z][a-z0-9+\-.]*(?=:)/i.exec(url); + if (!protocol) { + return allowRelative; + } + protocol = protocol[0].toLowerCase(); + switch (protocol) { + case 'http': + case 'https': + case 'ftp': + case 'mailto': + case 'tel': + return true; + default: + return false; + } +} +PDFJS.isValidUrl = isValidUrl; + +function shadow(obj, prop, value) { + Object.defineProperty(obj, prop, { value: value, + enumerable: true, + configurable: true, + writable: false }); + return value; +} +PDFJS.shadow = shadow; + +var PasswordResponses = PDFJS.PasswordResponses = { + NEED_PASSWORD: 1, + INCORRECT_PASSWORD: 2 +}; + +var PasswordException = (function PasswordExceptionClosure() { + function PasswordException(msg, code) { + this.name = 'PasswordException'; + this.message = msg; + this.code = code; + } + + PasswordException.prototype = new Error(); + PasswordException.constructor = PasswordException; + + return PasswordException; +})(); +PDFJS.PasswordException = PasswordException; + +var UnknownErrorException = (function UnknownErrorExceptionClosure() { + function UnknownErrorException(msg, details) { + this.name = 'UnknownErrorException'; + this.message = msg; + this.details = details; + } + + UnknownErrorException.prototype = new Error(); + UnknownErrorException.constructor = UnknownErrorException; + + return UnknownErrorException; +})(); +PDFJS.UnknownErrorException = UnknownErrorException; + +var InvalidPDFException = (function InvalidPDFExceptionClosure() { + function InvalidPDFException(msg) { + this.name = 'InvalidPDFException'; + this.message = msg; + } + + InvalidPDFException.prototype = new Error(); + InvalidPDFException.constructor = InvalidPDFException; + + return InvalidPDFException; +})(); +PDFJS.InvalidPDFException = InvalidPDFException; + +var MissingPDFException = (function MissingPDFExceptionClosure() { + function MissingPDFException(msg) { + this.name = 'MissingPDFException'; + this.message = msg; + } + + MissingPDFException.prototype = new Error(); + MissingPDFException.constructor = MissingPDFException; + + return MissingPDFException; +})(); +PDFJS.MissingPDFException = MissingPDFException; + +var UnexpectedResponseException = + (function UnexpectedResponseExceptionClosure() { + function UnexpectedResponseException(msg, status) { + this.name = 'UnexpectedResponseException'; + this.message = msg; + this.status = status; + } + + UnexpectedResponseException.prototype = new Error(); + UnexpectedResponseException.constructor = UnexpectedResponseException; + + return UnexpectedResponseException; +})(); +PDFJS.UnexpectedResponseException = UnexpectedResponseException; + +var NotImplementedException = (function NotImplementedExceptionClosure() { + function NotImplementedException(msg) { + this.message = msg; + } + + NotImplementedException.prototype = new Error(); + NotImplementedException.prototype.name = 'NotImplementedException'; + NotImplementedException.constructor = NotImplementedException; + + return NotImplementedException; +})(); + +var MissingDataException = (function MissingDataExceptionClosure() { + function MissingDataException(begin, end) { + this.begin = begin; + this.end = end; + this.message = 'Missing data [' + begin + ', ' + end + ')'; + } + + MissingDataException.prototype = new Error(); + MissingDataException.prototype.name = 'MissingDataException'; + MissingDataException.constructor = MissingDataException; + + return MissingDataException; +})(); + +var XRefParseException = (function XRefParseExceptionClosure() { + function XRefParseException(msg) { + this.message = msg; + } + + XRefParseException.prototype = new Error(); + XRefParseException.prototype.name = 'XRefParseException'; + XRefParseException.constructor = XRefParseException; + + return XRefParseException; +})(); + + +function bytesToString(bytes) { + assert(bytes !== null && typeof bytes === 'object' && + bytes.length !== undefined, 'Invalid argument for bytesToString'); + var length = bytes.length; + var MAX_ARGUMENT_COUNT = 8192; + if (length < MAX_ARGUMENT_COUNT) { + return String.fromCharCode.apply(null, bytes); + } + var strBuf = []; + for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) { + var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length); + var chunk = bytes.subarray(i, chunkEnd); + strBuf.push(String.fromCharCode.apply(null, chunk)); + } + return strBuf.join(''); +} + +function stringToBytes(str) { + assert(typeof str === 'string', 'Invalid argument for stringToBytes'); + var length = str.length; + var bytes = new Uint8Array(length); + for (var i = 0; i < length; ++i) { + bytes[i] = str.charCodeAt(i) & 0xFF; + } + return bytes; +} + +function string32(value) { + return String.fromCharCode((value >> 24) & 0xff, (value >> 16) & 0xff, + (value >> 8) & 0xff, value & 0xff); +} + +function log2(x) { + var n = 1, i = 0; + while (x > n) { + n <<= 1; + i++; + } + return i; +} + +function readInt8(data, start) { + return (data[start] << 24) >> 24; +} + +function readUint16(data, offset) { + return (data[offset] << 8) | data[offset + 1]; +} + +function readUint32(data, offset) { + return ((data[offset] << 24) | (data[offset + 1] << 16) | + (data[offset + 2] << 8) | data[offset + 3]) >>> 0; +} + +// Lazy test the endianness of the platform +// NOTE: This will be 'true' for simulated TypedArrays +function isLittleEndian() { + var buffer8 = new Uint8Array(2); + buffer8[0] = 1; + var buffer16 = new Uint16Array(buffer8.buffer); + return (buffer16[0] === 1); +} + +Object.defineProperty(PDFJS, 'isLittleEndian', { + configurable: true, + get: function PDFJS_isLittleEndian() { + return shadow(PDFJS, 'isLittleEndian', isLittleEndian()); + } +}); + +//#if !(FIREFOX || MOZCENTRAL || B2G || CHROME) +//// Lazy test if the userAgant support CanvasTypedArrays +function hasCanvasTypedArrays() { + var canvas = document.createElement('canvas'); + canvas.width = canvas.height = 1; + var ctx = canvas.getContext('2d'); + var imageData = ctx.createImageData(1, 1); + return (typeof imageData.data.buffer !== 'undefined'); +} + +Object.defineProperty(PDFJS, 'hasCanvasTypedArrays', { + configurable: true, + get: function PDFJS_hasCanvasTypedArrays() { + return shadow(PDFJS, 'hasCanvasTypedArrays', hasCanvasTypedArrays()); + } +}); + +var Uint32ArrayView = (function Uint32ArrayViewClosure() { + + function Uint32ArrayView(buffer, length) { + this.buffer = buffer; + this.byteLength = buffer.length; + this.length = length === undefined ? (this.byteLength >> 2) : length; + ensureUint32ArrayViewProps(this.length); + } + Uint32ArrayView.prototype = Object.create(null); + + var uint32ArrayViewSetters = 0; + function createUint32ArrayProp(index) { + return { + get: function () { + var buffer = this.buffer, offset = index << 2; + return (buffer[offset] | (buffer[offset + 1] << 8) | + (buffer[offset + 2] << 16) | (buffer[offset + 3] << 24)) >>> 0; + }, + set: function (value) { + var buffer = this.buffer, offset = index << 2; + buffer[offset] = value & 255; + buffer[offset + 1] = (value >> 8) & 255; + buffer[offset + 2] = (value >> 16) & 255; + buffer[offset + 3] = (value >>> 24) & 255; + } + }; + } + + function ensureUint32ArrayViewProps(length) { + while (uint32ArrayViewSetters < length) { + Object.defineProperty(Uint32ArrayView.prototype, + uint32ArrayViewSetters, + createUint32ArrayProp(uint32ArrayViewSetters)); + uint32ArrayViewSetters++; + } + } + + return Uint32ArrayView; +})(); +//#else +//PDFJS.hasCanvasTypedArrays = true; +//#endif + +var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0]; + +var Util = PDFJS.Util = (function UtilClosure() { + function Util() {} + + var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')']; + + // makeCssRgb() can be called thousands of times. Using |rgbBuf| avoids + // creating many intermediate strings. + Util.makeCssRgb = function Util_makeCssRgb(r, g, b) { + rgbBuf[1] = r; + rgbBuf[3] = g; + rgbBuf[5] = b; + return rgbBuf.join(''); + }; + + // Concatenates two transformation matrices together and returns the result. + Util.transform = function Util_transform(m1, m2) { + return [ + m1[0] * m2[0] + m1[2] * m2[1], + m1[1] * m2[0] + m1[3] * m2[1], + m1[0] * m2[2] + m1[2] * m2[3], + m1[1] * m2[2] + m1[3] * m2[3], + m1[0] * m2[4] + m1[2] * m2[5] + m1[4], + m1[1] * m2[4] + m1[3] * m2[5] + m1[5] + ]; + }; + + // For 2d affine transforms + Util.applyTransform = function Util_applyTransform(p, m) { + var xt = p[0] * m[0] + p[1] * m[2] + m[4]; + var yt = p[0] * m[1] + p[1] * m[3] + m[5]; + return [xt, yt]; + }; + + Util.applyInverseTransform = function Util_applyInverseTransform(p, m) { + var d = m[0] * m[3] - m[1] * m[2]; + var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d; + var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d; + return [xt, yt]; + }; + + // Applies the transform to the rectangle and finds the minimum axially + // aligned bounding box. + Util.getAxialAlignedBoundingBox = + function Util_getAxialAlignedBoundingBox(r, m) { + + var p1 = Util.applyTransform(r, m); + var p2 = Util.applyTransform(r.slice(2, 4), m); + var p3 = Util.applyTransform([r[0], r[3]], m); + var p4 = Util.applyTransform([r[2], r[1]], m); + return [ + Math.min(p1[0], p2[0], p3[0], p4[0]), + Math.min(p1[1], p2[1], p3[1], p4[1]), + Math.max(p1[0], p2[0], p3[0], p4[0]), + Math.max(p1[1], p2[1], p3[1], p4[1]) + ]; + }; + + Util.inverseTransform = function Util_inverseTransform(m) { + var d = m[0] * m[3] - m[1] * m[2]; + return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d, + (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d]; + }; + + // Apply a generic 3d matrix M on a 3-vector v: + // | a b c | | X | + // | d e f | x | Y | + // | g h i | | Z | + // M is assumed to be serialized as [a,b,c,d,e,f,g,h,i], + // with v as [X,Y,Z] + Util.apply3dTransform = function Util_apply3dTransform(m, v) { + return [ + m[0] * v[0] + m[1] * v[1] + m[2] * v[2], + m[3] * v[0] + m[4] * v[1] + m[5] * v[2], + m[6] * v[0] + m[7] * v[1] + m[8] * v[2] + ]; + }; + + // This calculation uses Singular Value Decomposition. + // The SVD can be represented with formula A = USV. We are interested in the + // matrix S here because it represents the scale values. + Util.singularValueDecompose2dScale = + function Util_singularValueDecompose2dScale(m) { + + var transpose = [m[0], m[2], m[1], m[3]]; + + // Multiply matrix m with its transpose. + var a = m[0] * transpose[0] + m[1] * transpose[2]; + var b = m[0] * transpose[1] + m[1] * transpose[3]; + var c = m[2] * transpose[0] + m[3] * transpose[2]; + var d = m[2] * transpose[1] + m[3] * transpose[3]; + + // Solve the second degree polynomial to get roots. + var first = (a + d) / 2; + var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2; + var sx = first + second || 1; + var sy = first - second || 1; + + // Scale values are the square roots of the eigenvalues. + return [Math.sqrt(sx), Math.sqrt(sy)]; + }; + + // Normalize rectangle rect=[x1, y1, x2, y2] so that (x1,y1) < (x2,y2) + // For coordinate systems whose origin lies in the bottom-left, this + // means normalization to (BL,TR) ordering. For systems with origin in the + // top-left, this means (TL,BR) ordering. + Util.normalizeRect = function Util_normalizeRect(rect) { + var r = rect.slice(0); // clone rect + if (rect[0] > rect[2]) { + r[0] = rect[2]; + r[2] = rect[0]; + } + if (rect[1] > rect[3]) { + r[1] = rect[3]; + r[3] = rect[1]; + } + return r; + }; + + // Returns a rectangle [x1, y1, x2, y2] corresponding to the + // intersection of rect1 and rect2. If no intersection, returns 'false' + // The rectangle coordinates of rect1, rect2 should be [x1, y1, x2, y2] + Util.intersect = function Util_intersect(rect1, rect2) { + function compare(a, b) { + return a - b; + } + + // Order points along the axes + var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare), + orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare), + result = []; + + rect1 = Util.normalizeRect(rect1); + rect2 = Util.normalizeRect(rect2); + + // X: first and second points belong to different rectangles? + if ((orderedX[0] === rect1[0] && orderedX[1] === rect2[0]) || + (orderedX[0] === rect2[0] && orderedX[1] === rect1[0])) { + // Intersection must be between second and third points + result[0] = orderedX[1]; + result[2] = orderedX[2]; + } else { + return false; + } + + // Y: first and second points belong to different rectangles? + if ((orderedY[0] === rect1[1] && orderedY[1] === rect2[1]) || + (orderedY[0] === rect2[1] && orderedY[1] === rect1[1])) { + // Intersection must be between second and third points + result[1] = orderedY[1]; + result[3] = orderedY[2]; + } else { + return false; + } + + return result; + }; + + Util.sign = function Util_sign(num) { + return num < 0 ? -1 : 1; + }; + + Util.appendToArray = function Util_appendToArray(arr1, arr2) { + Array.prototype.push.apply(arr1, arr2); + }; + + Util.prependToArray = function Util_prependToArray(arr1, arr2) { + Array.prototype.unshift.apply(arr1, arr2); + }; + + Util.extendObj = function extendObj(obj1, obj2) { + for (var key in obj2) { + obj1[key] = obj2[key]; + } + }; + + Util.getInheritableProperty = function Util_getInheritableProperty(dict, + name) { + while (dict && !dict.has(name)) { + dict = dict.get('Parent'); + } + if (!dict) { + return null; + } + return dict.get(name); + }; + + Util.inherit = function Util_inherit(sub, base, prototype) { + sub.prototype = Object.create(base.prototype); + sub.prototype.constructor = sub; + for (var prop in prototype) { + sub.prototype[prop] = prototype[prop]; + } + }; + + Util.loadScript = function Util_loadScript(src, callback) { + var script = document.createElement('script'); + var loaded = false; + script.setAttribute('src', src); + if (callback) { + script.onload = function() { + if (!loaded) { + callback(); + } + loaded = true; + }; + } + document.getElementsByTagName('head')[0].appendChild(script); + }; + + return Util; +})(); + +/** + * PDF page viewport created based on scale, rotation and offset. + * @class + * @alias PDFJS.PageViewport + */ +var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() { + /** + * @constructor + * @private + * @param viewBox {Array} xMin, yMin, xMax and yMax coordinates. + * @param scale {number} scale of the viewport. + * @param rotation {number} rotations of the viewport in degrees. + * @param offsetX {number} offset X + * @param offsetY {number} offset Y + * @param dontFlip {boolean} if true, axis Y will not be flipped. + */ + function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) { + this.viewBox = viewBox; + this.scale = scale; + this.rotation = rotation; + this.offsetX = offsetX; + this.offsetY = offsetY; + + // creating transform to convert pdf coordinate system to the normal + // canvas like coordinates taking in account scale and rotation + var centerX = (viewBox[2] + viewBox[0]) / 2; + var centerY = (viewBox[3] + viewBox[1]) / 2; + var rotateA, rotateB, rotateC, rotateD; + rotation = rotation % 360; + rotation = rotation < 0 ? rotation + 360 : rotation; + switch (rotation) { + case 180: + rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1; + break; + case 90: + rotateA = 0; rotateB = 1; rotateC = 1; rotateD = 0; + break; + case 270: + rotateA = 0; rotateB = -1; rotateC = -1; rotateD = 0; + break; + //case 0: + default: + rotateA = 1; rotateB = 0; rotateC = 0; rotateD = -1; + break; + } + + if (dontFlip) { + rotateC = -rotateC; rotateD = -rotateD; + } + + var offsetCanvasX, offsetCanvasY; + var width, height; + if (rotateA === 0) { + offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX; + offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY; + width = Math.abs(viewBox[3] - viewBox[1]) * scale; + height = Math.abs(viewBox[2] - viewBox[0]) * scale; + } else { + offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX; + offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY; + width = Math.abs(viewBox[2] - viewBox[0]) * scale; + height = Math.abs(viewBox[3] - viewBox[1]) * scale; + } + // creating transform for the following operations: + // translate(-centerX, -centerY), rotate and flip vertically, + // scale, and translate(offsetCanvasX, offsetCanvasY) + this.transform = [ + rotateA * scale, + rotateB * scale, + rotateC * scale, + rotateD * scale, + offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY, + offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY + ]; + + this.width = width; + this.height = height; + this.fontScale = scale; + } + PageViewport.prototype = /** @lends PDFJS.PageViewport.prototype */ { + /** + * Clones viewport with additional properties. + * @param args {Object} (optional) If specified, may contain the 'scale' or + * 'rotation' properties to override the corresponding properties in + * the cloned viewport. + * @returns {PDFJS.PageViewport} Cloned viewport. + */ + clone: function PageViewPort_clone(args) { + args = args || {}; + var scale = 'scale' in args ? args.scale : this.scale; + var rotation = 'rotation' in args ? args.rotation : this.rotation; + return new PageViewport(this.viewBox.slice(), scale, rotation, + this.offsetX, this.offsetY, args.dontFlip); + }, + /** + * Converts PDF point to the viewport coordinates. For examples, useful for + * converting PDF location into canvas pixel coordinates. + * @param x {number} X coordinate. + * @param y {number} Y coordinate. + * @returns {Object} Object that contains 'x' and 'y' properties of the + * point in the viewport coordinate space. + * @see {@link convertToPdfPoint} + * @see {@link convertToViewportRectangle} + */ + convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) { + return Util.applyTransform([x, y], this.transform); + }, + /** + * Converts PDF rectangle to the viewport coordinates. + * @param rect {Array} xMin, yMin, xMax and yMax coordinates. + * @returns {Array} Contains corresponding coordinates of the rectangle + * in the viewport coordinate space. + * @see {@link convertToViewportPoint} + */ + convertToViewportRectangle: + function PageViewport_convertToViewportRectangle(rect) { + var tl = Util.applyTransform([rect[0], rect[1]], this.transform); + var br = Util.applyTransform([rect[2], rect[3]], this.transform); + return [tl[0], tl[1], br[0], br[1]]; + }, + /** + * Converts viewport coordinates to the PDF location. For examples, useful + * for converting canvas pixel location into PDF one. + * @param x {number} X coordinate. + * @param y {number} Y coordinate. + * @returns {Object} Object that contains 'x' and 'y' properties of the + * point in the PDF coordinate space. + * @see {@link convertToViewportPoint} + */ + convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) { + return Util.applyInverseTransform([x, y], this.transform); + } + }; + return PageViewport; +})(); + +var PDFStringTranslateTable = [ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014, + 0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C, + 0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160, + 0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC +]; + +function stringToPDFString(str) { + var i, n = str.length, strBuf = []; + if (str[0] === '\xFE' && str[1] === '\xFF') { + // UTF16BE BOM + for (i = 2; i < n; i += 2) { + strBuf.push(String.fromCharCode( + (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1))); + } + } else { + for (i = 0; i < n; ++i) { + var code = PDFStringTranslateTable[str.charCodeAt(i)]; + strBuf.push(code ? String.fromCharCode(code) : str.charAt(i)); + } + } + return strBuf.join(''); +} + +function stringToUTF8String(str) { + return decodeURIComponent(escape(str)); +} + +function isEmptyObj(obj) { + for (var key in obj) { + return false; + } + return true; +} + +function isBool(v) { + return typeof v === 'boolean'; +} + +function isInt(v) { + return typeof v === 'number' && ((v | 0) === v); +} + +function isNum(v) { + return typeof v === 'number'; +} + +function isString(v) { + return typeof v === 'string'; +} + +function isName(v) { + return v instanceof Name; +} + +function isCmd(v, cmd) { + return v instanceof Cmd && (cmd === undefined || v.cmd === cmd); +} + +function isDict(v, type) { + if (!(v instanceof Dict)) { + return false; + } + if (!type) { + return true; + } + var dictType = v.get('Type'); + return isName(dictType) && dictType.name === type; +} + +function isArray(v) { + return v instanceof Array; +} + +function isStream(v) { + return typeof v === 'object' && v !== null && v.getBytes !== undefined; +} + +function isArrayBuffer(v) { + return typeof v === 'object' && v !== null && v.byteLength !== undefined; +} + +function isRef(v) { + return v instanceof Ref; +} + +/** + * Promise Capability object. + * + * @typedef {Object} PromiseCapability + * @property {Promise} promise - A promise object. + * @property {function} resolve - Fullfills the promise. + * @property {function} reject - Rejects the promise. + */ + +/** + * Creates a promise capability object. + * @alias PDFJS.createPromiseCapability + * + * @return {PromiseCapability} A capability object contains: + * - a Promise, resolve and reject methods. + */ +function createPromiseCapability() { + var capability = {}; + capability.promise = new Promise(function (resolve, reject) { + capability.resolve = resolve; + capability.reject = reject; + }); + return capability; +} + +PDFJS.createPromiseCapability = createPromiseCapability; + +/** + * Polyfill for Promises: + * The following promise implementation tries to generally implement the + * Promise/A+ spec. Some notable differences from other promise libaries are: + * - There currently isn't a seperate deferred and promise object. + * - Unhandled rejections eventually show an error if they aren't handled. + * + * Based off of the work in: + * https://bugzilla.mozilla.org/show_bug.cgi?id=810490 + */ +(function PromiseClosure() { + if (globalScope.Promise) { + // Promises existing in the DOM/Worker, checking presence of all/resolve + if (typeof globalScope.Promise.all !== 'function') { + globalScope.Promise.all = function (iterable) { + var count = 0, results = [], resolve, reject; + var promise = new globalScope.Promise(function (resolve_, reject_) { + resolve = resolve_; + reject = reject_; + }); + iterable.forEach(function (p, i) { + count++; + p.then(function (result) { + results[i] = result; + count--; + if (count === 0) { + resolve(results); + } + }, reject); + }); + if (count === 0) { + resolve(results); + } + return promise; + }; + } + if (typeof globalScope.Promise.resolve !== 'function') { + globalScope.Promise.resolve = function (value) { + return new globalScope.Promise(function (resolve) { resolve(value); }); + }; + } + if (typeof globalScope.Promise.reject !== 'function') { + globalScope.Promise.reject = function (reason) { + return new globalScope.Promise(function (resolve, reject) { + reject(reason); + }); + }; + } + if (typeof globalScope.Promise.prototype.catch !== 'function') { + globalScope.Promise.prototype.catch = function (onReject) { + return globalScope.Promise.prototype.then(undefined, onReject); + }; + } + return; + } +//#if !MOZCENTRAL + var STATUS_PENDING = 0; + var STATUS_RESOLVED = 1; + var STATUS_REJECTED = 2; + + // In an attempt to avoid silent exceptions, unhandled rejections are + // tracked and if they aren't handled in a certain amount of time an + // error is logged. + var REJECTION_TIMEOUT = 500; + + var HandlerManager = { + handlers: [], + running: false, + unhandledRejections: [], + pendingRejectionCheck: false, + + scheduleHandlers: function scheduleHandlers(promise) { + if (promise._status === STATUS_PENDING) { + return; + } + + this.handlers = this.handlers.concat(promise._handlers); + promise._handlers = []; + + if (this.running) { + return; + } + this.running = true; + + setTimeout(this.runHandlers.bind(this), 0); + }, + + runHandlers: function runHandlers() { + var RUN_TIMEOUT = 1; // ms + var timeoutAt = Date.now() + RUN_TIMEOUT; + while (this.handlers.length > 0) { + var handler = this.handlers.shift(); + + var nextStatus = handler.thisPromise._status; + var nextValue = handler.thisPromise._value; + + try { + if (nextStatus === STATUS_RESOLVED) { + if (typeof handler.onResolve === 'function') { + nextValue = handler.onResolve(nextValue); + } + } else if (typeof handler.onReject === 'function') { + nextValue = handler.onReject(nextValue); + nextStatus = STATUS_RESOLVED; + + if (handler.thisPromise._unhandledRejection) { + this.removeUnhandeledRejection(handler.thisPromise); + } + } + } catch (ex) { + nextStatus = STATUS_REJECTED; + nextValue = ex; + } + + handler.nextPromise._updateStatus(nextStatus, nextValue); + if (Date.now() >= timeoutAt) { + break; + } + } + + if (this.handlers.length > 0) { + setTimeout(this.runHandlers.bind(this), 0); + return; + } + + this.running = false; + }, + + addUnhandledRejection: function addUnhandledRejection(promise) { + this.unhandledRejections.push({ + promise: promise, + time: Date.now() + }); + this.scheduleRejectionCheck(); + }, + + removeUnhandeledRejection: function removeUnhandeledRejection(promise) { + promise._unhandledRejection = false; + for (var i = 0; i < this.unhandledRejections.length; i++) { + if (this.unhandledRejections[i].promise === promise) { + this.unhandledRejections.splice(i); + i--; + } + } + }, + + scheduleRejectionCheck: function scheduleRejectionCheck() { + if (this.pendingRejectionCheck) { + return; + } + this.pendingRejectionCheck = true; + setTimeout(function rejectionCheck() { + this.pendingRejectionCheck = false; + var now = Date.now(); + for (var i = 0; i < this.unhandledRejections.length; i++) { + if (now - this.unhandledRejections[i].time > REJECTION_TIMEOUT) { + var unhandled = this.unhandledRejections[i].promise._value; + var msg = 'Unhandled rejection: ' + unhandled; + if (unhandled.stack) { + msg += '\n' + unhandled.stack; + } + warn(msg); + this.unhandledRejections.splice(i); + i--; + } + } + if (this.unhandledRejections.length) { + this.scheduleRejectionCheck(); + } + }.bind(this), REJECTION_TIMEOUT); + } + }; + + function Promise(resolver) { + this._status = STATUS_PENDING; + this._handlers = []; + try { + resolver.call(this, this._resolve.bind(this), this._reject.bind(this)); + } catch (e) { + this._reject(e); + } + } + /** + * Builds a promise that is resolved when all the passed in promises are + * resolved. + * @param {array} array of data and/or promises to wait for. + * @return {Promise} New dependant promise. + */ + Promise.all = function Promise_all(promises) { + var resolveAll, rejectAll; + var deferred = new Promise(function (resolve, reject) { + resolveAll = resolve; + rejectAll = reject; + }); + var unresolved = promises.length; + var results = []; + if (unresolved === 0) { + resolveAll(results); + return deferred; + } + function reject(reason) { + if (deferred._status === STATUS_REJECTED) { + return; + } + results = []; + rejectAll(reason); + } + for (var i = 0, ii = promises.length; i < ii; ++i) { + var promise = promises[i]; + var resolve = (function(i) { + return function(value) { + if (deferred._status === STATUS_REJECTED) { + return; + } + results[i] = value; + unresolved--; + if (unresolved === 0) { + resolveAll(results); + } + }; + })(i); + if (Promise.isPromise(promise)) { + promise.then(resolve, reject); + } else { + resolve(promise); + } + } + return deferred; + }; + + /** + * Checks if the value is likely a promise (has a 'then' function). + * @return {boolean} true if value is thenable + */ + Promise.isPromise = function Promise_isPromise(value) { + return value && typeof value.then === 'function'; + }; + + /** + * Creates resolved promise + * @param value resolve value + * @returns {Promise} + */ + Promise.resolve = function Promise_resolve(value) { + return new Promise(function (resolve) { resolve(value); }); + }; + + /** + * Creates rejected promise + * @param reason rejection value + * @returns {Promise} + */ + Promise.reject = function Promise_reject(reason) { + return new Promise(function (resolve, reject) { reject(reason); }); + }; + + Promise.prototype = { + _status: null, + _value: null, + _handlers: null, + _unhandledRejection: null, + + _updateStatus: function Promise__updateStatus(status, value) { + if (this._status === STATUS_RESOLVED || + this._status === STATUS_REJECTED) { + return; + } + + if (status === STATUS_RESOLVED && + Promise.isPromise(value)) { + value.then(this._updateStatus.bind(this, STATUS_RESOLVED), + this._updateStatus.bind(this, STATUS_REJECTED)); + return; + } + + this._status = status; + this._value = value; + + if (status === STATUS_REJECTED && this._handlers.length === 0) { + this._unhandledRejection = true; + HandlerManager.addUnhandledRejection(this); + } + + HandlerManager.scheduleHandlers(this); + }, + + _resolve: function Promise_resolve(value) { + this._updateStatus(STATUS_RESOLVED, value); + }, + + _reject: function Promise_reject(reason) { + this._updateStatus(STATUS_REJECTED, reason); + }, + + then: function Promise_then(onResolve, onReject) { + var nextPromise = new Promise(function (resolve, reject) { + this.resolve = resolve; + this.reject = reject; + }); + this._handlers.push({ + thisPromise: this, + onResolve: onResolve, + onReject: onReject, + nextPromise: nextPromise + }); + HandlerManager.scheduleHandlers(this); + return nextPromise; + }, + + catch: function Promise_catch(onReject) { + return this.then(undefined, onReject); + } + }; + + globalScope.Promise = Promise; +//#else +//throw new Error('DOM Promise is not present'); +//#endif +})(); + +var StatTimer = (function StatTimerClosure() { + function rpad(str, pad, length) { + while (str.length < length) { + str += pad; + } + return str; + } + function StatTimer() { + this.started = {}; + this.times = []; + this.enabled = true; + } + StatTimer.prototype = { + time: function StatTimer_time(name) { + if (!this.enabled) { + return; + } + if (name in this.started) { + warn('Timer is already running for ' + name); + } + this.started[name] = Date.now(); + }, + timeEnd: function StatTimer_timeEnd(name) { + if (!this.enabled) { + return; + } + if (!(name in this.started)) { + warn('Timer has not been started for ' + name); + } + this.times.push({ + 'name': name, + 'start': this.started[name], + 'end': Date.now() + }); + // Remove timer from started so it can be called again. + delete this.started[name]; + }, + toString: function StatTimer_toString() { + var i, ii; + var times = this.times; + var out = ''; + // Find the longest name for padding purposes. + var longest = 0; + for (i = 0, ii = times.length; i < ii; ++i) { + var name = times[i]['name']; + if (name.length > longest) { + longest = name.length; + } + } + for (i = 0, ii = times.length; i < ii; ++i) { + var span = times[i]; + var duration = span.end - span.start; + out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n'; + } + return out; + } + }; + return StatTimer; +})(); + +PDFJS.createBlob = function createBlob(data, contentType) { + if (typeof Blob !== 'undefined') { + return new Blob([data], { type: contentType }); + } + // Blob builder is deprecated in FF14 and removed in FF18. + var bb = new MozBlobBuilder(); + bb.append(data); + return bb.getBlob(contentType); +}; + +PDFJS.createObjectURL = (function createObjectURLClosure() { + // Blob/createObjectURL is not available, falling back to data schema. + var digits = + 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; + + return function createObjectURL(data, contentType) { + if (!PDFJS.disableCreateObjectURL && + typeof URL !== 'undefined' && URL.createObjectURL) { + var blob = PDFJS.createBlob(data, contentType); + return URL.createObjectURL(blob); + } + + var buffer = 'data:' + contentType + ';base64,'; + for (var i = 0, ii = data.length; i < ii; i += 3) { + var b1 = data[i] & 0xFF; + var b2 = data[i + 1] & 0xFF; + var b3 = data[i + 2] & 0xFF; + var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4); + var d3 = i + 1 < ii ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64; + var d4 = i + 2 < ii ? (b3 & 0x3F) : 64; + buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4]; + } + return buffer; + }; +})(); + +function MessageHandler(name, comObj) { + this.name = name; + this.comObj = comObj; + this.callbackIndex = 1; + this.postMessageTransfers = true; + var callbacksCapabilities = this.callbacksCapabilities = {}; + var ah = this.actionHandler = {}; + + ah['console_log'] = [function ahConsoleLog(data) { + console.log.apply(console, data); + }]; + ah['console_error'] = [function ahConsoleError(data) { + console.error.apply(console, data); + }]; + ah['_unsupported_feature'] = [function ah_unsupportedFeature(data) { + UnsupportedManager.notify(data); + }]; + + comObj.onmessage = function messageHandlerComObjOnMessage(event) { + var data = event.data; + if (data.isReply) { + var callbackId = data.callbackId; + if (data.callbackId in callbacksCapabilities) { + var callback = callbacksCapabilities[callbackId]; + delete callbacksCapabilities[callbackId]; + if ('error' in data) { + callback.reject(data.error); + } else { + callback.resolve(data.data); + } + } else { + error('Cannot resolve callback ' + callbackId); + } + } else if (data.action in ah) { + var action = ah[data.action]; + if (data.callbackId) { + Promise.resolve().then(function () { + return action[0].call(action[1], data.data); + }).then(function (result) { + comObj.postMessage({ + isReply: true, + callbackId: data.callbackId, + data: result + }); + }, function (reason) { + comObj.postMessage({ + isReply: true, + callbackId: data.callbackId, + error: reason + }); + }); + } else { + action[0].call(action[1], data.data); + } + } else { + error('Unknown action from worker: ' + data.action); + } + }; +} + +MessageHandler.prototype = { + on: function messageHandlerOn(actionName, handler, scope) { + var ah = this.actionHandler; + if (ah[actionName]) { + error('There is already an actionName called "' + actionName + '"'); + } + ah[actionName] = [handler, scope]; + }, + /** + * Sends a message to the comObj to invoke the action with the supplied data. + * @param {String} actionName Action to call. + * @param {JSON} data JSON data to send. + * @param {Array} [transfers] Optional list of transfers/ArrayBuffers + */ + send: function messageHandlerSend(actionName, data, transfers) { + var message = { + action: actionName, + data: data + }; + this.postMessage(message, transfers); + }, + /** + * Sends a message to the comObj to invoke the action with the supplied data. + * Expects that other side will callback with the response. + * @param {String} actionName Action to call. + * @param {JSON} data JSON data to send. + * @param {Array} [transfers] Optional list of transfers/ArrayBuffers. + * @returns {Promise} Promise to be resolved with response data. + */ + sendWithPromise: + function messageHandlerSendWithPromise(actionName, data, transfers) { + var callbackId = this.callbackIndex++; + var message = { + action: actionName, + data: data, + callbackId: callbackId + }; + var capability = createPromiseCapability(); + this.callbacksCapabilities[callbackId] = capability; + try { + this.postMessage(message, transfers); + } catch (e) { + capability.reject(e); + } + return capability.promise; + }, + /** + * Sends raw message to the comObj. + * @private + * @param message {Object} Raw message. + * @param transfers List of transfers/ArrayBuffers, or undefined. + */ + postMessage: function (message, transfers) { + if (transfers && this.postMessageTransfers) { + this.comObj.postMessage(message, transfers); + } else { + this.comObj.postMessage(message); + } + } +}; + +function loadJpegStream(id, imageUrl, objs) { + var img = new Image(); + img.onload = (function loadJpegStream_onloadClosure() { + objs.resolve(id, img); + }); + img.onerror = (function loadJpegStream_onerrorClosure() { + objs.resolve(id, null); + warn('Error during JPEG image loading'); + }); + img.src = imageUrl; +} + + +/** + * The maximum allowed image size in total pixels e.g. width * height. Images + * above this value will not be drawn. Use -1 for no limit. + * @var {number} + */ +PDFJS.maxImageSize = (PDFJS.maxImageSize === undefined ? + -1 : PDFJS.maxImageSize); + +/** + * The url of where the predefined Adobe CMaps are located. Include trailing + * slash. + * @var {string} + */ +PDFJS.cMapUrl = (PDFJS.cMapUrl === undefined ? null : PDFJS.cMapUrl); + +/** + * Specifies if CMaps are binary packed. + * @var {boolean} + */ +PDFJS.cMapPacked = PDFJS.cMapPacked === undefined ? false : PDFJS.cMapPacked; + +/** + * By default fonts are converted to OpenType fonts and loaded via font face + * rules. If disabled, the font will be rendered using a built in font renderer + * that constructs the glyphs with primitive path commands. + * @var {boolean} + */ +PDFJS.disableFontFace = (PDFJS.disableFontFace === undefined ? + false : PDFJS.disableFontFace); + +/** + * Path for image resources, mainly for annotation icons. Include trailing + * slash. + * @var {string} + */ +PDFJS.imageResourcesPath = (PDFJS.imageResourcesPath === undefined ? + '' : PDFJS.imageResourcesPath); + +/** + * Disable the web worker and run all code on the main thread. This will happen + * automatically if the browser doesn't support workers or sending typed arrays + * to workers. + * @var {boolean} + */ +PDFJS.disableWorker = (PDFJS.disableWorker === undefined ? + false : PDFJS.disableWorker); + +/** + * Path and filename of the worker file. Required when the worker is enabled in + * development mode. If unspecified in the production build, the worker will be + * loaded based on the location of the pdf.js file. + * @var {string} + */ +PDFJS.workerSrc = (PDFJS.workerSrc === undefined ? null : PDFJS.workerSrc); + +/** + * Disable range request loading of PDF files. When enabled and if the server + * supports partial content requests then the PDF will be fetched in chunks. + * Enabled (false) by default. + * @var {boolean} + */ +PDFJS.disableRange = (PDFJS.disableRange === undefined ? + false : PDFJS.disableRange); + +/** + * Disable streaming of PDF file data. By default PDF.js attempts to load PDF + * in chunks. This default behavior can be disabled. + * @var {boolean} + */ +PDFJS.disableStream = (PDFJS.disableStream === undefined ? + false : PDFJS.disableStream); + +/** + * Disable pre-fetching of PDF file data. When range requests are enabled PDF.js + * will automatically keep fetching more data even if it isn't needed to display + * the current page. This default behavior can be disabled. + * + * NOTE: It is also necessary to disable streaming, see above, + * in order for disabling of pre-fetching to work correctly. + * @var {boolean} + */ +PDFJS.disableAutoFetch = (PDFJS.disableAutoFetch === undefined ? + false : PDFJS.disableAutoFetch); + +/** + * Enables special hooks for debugging PDF.js. + * @var {boolean} + */ +PDFJS.pdfBug = (PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug); + +/** + * Enables transfer usage in postMessage for ArrayBuffers. + * @var {boolean} + */ +PDFJS.postMessageTransfers = (PDFJS.postMessageTransfers === undefined ? + true : PDFJS.postMessageTransfers); + +/** + * Disables URL.createObjectURL usage. + * @var {boolean} + */ +PDFJS.disableCreateObjectURL = (PDFJS.disableCreateObjectURL === undefined ? + false : PDFJS.disableCreateObjectURL); + +/** + * Disables WebGL usage. + * @var {boolean} + */ +PDFJS.disableWebGL = (PDFJS.disableWebGL === undefined ? + true : PDFJS.disableWebGL); + +/** + * Disables fullscreen support, and by extension Presentation Mode, + * in browsers which support the fullscreen API. + * @var {boolean} + */ +PDFJS.disableFullscreen = (PDFJS.disableFullscreen === undefined ? + false : PDFJS.disableFullscreen); + +/** + * Enables CSS only zooming. + * @var {boolean} + */ +PDFJS.useOnlyCssZoom = (PDFJS.useOnlyCssZoom === undefined ? + false : PDFJS.useOnlyCssZoom); + +/** + * Controls the logging level. + * The constants from PDFJS.VERBOSITY_LEVELS should be used: + * - errors + * - warnings [default] + * - infos + * @var {number} + */ +PDFJS.verbosity = (PDFJS.verbosity === undefined ? + PDFJS.VERBOSITY_LEVELS.warnings : PDFJS.verbosity); + +/** + * The maximum supported canvas size in total pixels e.g. width * height. + * The default value is 4096 * 4096. Use -1 for no limit. + * @var {number} + */ +PDFJS.maxCanvasPixels = (PDFJS.maxCanvasPixels === undefined ? + 16777216 : PDFJS.maxCanvasPixels); + +/** + * Opens external links in a new window if enabled. The default behavior opens + * external links in the PDF.js window. + * @var {boolean} + */ +PDFJS.openExternalLinksInNewWindow = ( + PDFJS.openExternalLinksInNewWindow === undefined ? + false : PDFJS.openExternalLinksInNewWindow); + +/** + * Document initialization / loading parameters object. + * + * @typedef {Object} DocumentInitParameters + * @property {string} url - The URL of the PDF. + * @property {TypedArray|Array|string} data - Binary PDF data. Use typed arrays + * (Uint8Array) to improve the memory usage. If PDF data is BASE64-encoded, + * use atob() to convert it to a binary string first. + * @property {Object} httpHeaders - Basic authentication headers. + * @property {boolean} withCredentials - Indicates whether or not cross-site + * Access-Control requests should be made using credentials such as cookies + * or authorization headers. The default is false. + * @property {string} password - For decrypting password-protected PDFs. + * @property {TypedArray} initialData - A typed array with the first portion or + * all of the pdf data. Used by the extension since some data is already + * loaded before the switch to range requests. + * @property {number} length - The PDF file length. It's used for progress + * reports and range requests operations. + * @property {PDFDataRangeTransport} range + */ + +/** + * @typedef {Object} PDFDocumentStats + * @property {Array} streamTypes - Used stream types in the document (an item + * is set to true if specific stream ID was used in the document). + * @property {Array} fontTypes - Used font type in the document (an item is set + * to true if specific font ID was used in the document). + */ + +/** + * This is the main entry point for loading a PDF and interacting with it. + * NOTE: If a URL is used to fetch the PDF data a standard XMLHttpRequest(XHR) + * is used, which means it must follow the same origin rules that any XHR does + * e.g. No cross domain requests without CORS. + * + * @param {string|TypedArray|DocumentInitParameters|PDFDataRangeTransport} src + * Can be a url to where a PDF is located, a typed array (Uint8Array) + * already populated with data or parameter object. + * + * @param {PDFDataRangeTransport} pdfDataRangeTransport (deprecated) It is used + * if you want to manually serve range requests for data in the PDF. + * + * @param {function} passwordCallback (deprecated) It is used to request a + * password if wrong or no password was provided. The callback receives two + * parameters: function that needs to be called with new password and reason + * (see {PasswordResponses}). + * + * @param {function} progressCallback (deprecated) It is used to be able to + * monitor the loading progress of the PDF file (necessary to implement e.g. + * a loading bar). The callback receives an {Object} with the properties: + * {number} loaded and {number} total. + * + * @return {PDFDocumentLoadingTask} + */ +PDFJS.getDocument = function getDocument(src, + pdfDataRangeTransport, + passwordCallback, + progressCallback) { + var task = new PDFDocumentLoadingTask(); + + // Support of the obsolete arguments (for compatibility with API v1.0) + if (pdfDataRangeTransport) { + if (!(pdfDataRangeTransport instanceof PDFDataRangeTransport)) { + // Not a PDFDataRangeTransport instance, trying to add missing properties. + pdfDataRangeTransport = Object.create(pdfDataRangeTransport); + pdfDataRangeTransport.length = src.length; + pdfDataRangeTransport.initialData = src.initialData; + } + src = Object.create(src); + src.range = pdfDataRangeTransport; + } + task.onPassword = passwordCallback || null; + task.onProgress = progressCallback || null; + + var workerInitializedCapability, transport; + var source; + if (typeof src === 'string') { + source = { url: src }; + } else if (isArrayBuffer(src)) { + source = { data: src }; + } else if (src instanceof PDFDataRangeTransport) { + source = { range: src }; + } else { + if (typeof src !== 'object') { + error('Invalid parameter in getDocument, need either Uint8Array, ' + + 'string or a parameter object'); + } + if (!src.url && !src.data && !src.range) { + error('Invalid parameter object: need either .data, .range or .url'); + } + + source = src; + } + + var params = {}; + for (var key in source) { + if (key === 'url' && typeof window !== 'undefined') { + // The full path is required in the 'url' field. + params[key] = combineUrl(window.location.href, source[key]); + continue; + } else if (key === 'range') { + continue; + } else if (key === 'data' && !(source[key] instanceof Uint8Array)) { + // Converting string or array-like data to Uint8Array. + var pdfBytes = source[key]; + if (typeof pdfBytes === 'string') { + params[key] = stringToBytes(pdfBytes); + } else if (typeof pdfBytes === 'object' && pdfBytes !== null && + !isNaN(pdfBytes.length)) { + params[key] = new Uint8Array(pdfBytes); + } else { + error('Invalid PDF binary data: either typed array, string or ' + + 'array-like object is expected in the data property.'); + } + continue; + } + params[key] = source[key]; + } + + workerInitializedCapability = createPromiseCapability(); + transport = new WorkerTransport(workerInitializedCapability, source.range); + workerInitializedCapability.promise.then(function transportInitialized() { + transport.fetchDocument(task, params); + }); + + return task; +}; + +/** + * PDF document loading operation. + * @class + */ +var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() { + /** @constructs PDFDocumentLoadingTask */ + function PDFDocumentLoadingTask() { + this._capability = createPromiseCapability(); + + /** + * Callback to request a password if wrong or no password was provided. + * The callback receives two parameters: function that needs to be called + * with new password and reason (see {PasswordResponses}). + */ + this.onPassword = null; + + /** + * Callback to be able to monitor the loading progress of the PDF file + * (necessary to implement e.g. a loading bar). The callback receives + * an {Object} with the properties: {number} loaded and {number} total. + */ + this.onProgress = null; + } + + PDFDocumentLoadingTask.prototype = + /** @lends PDFDocumentLoadingTask.prototype */ { + /** + * @return {Promise} + */ + get promise() { + return this._capability.promise; + }, + + // TODO add cancel or abort method + + /** + * Registers callbacks to indicate the document loading completion. + * + * @param {function} onFulfilled The callback for the loading completion. + * @param {function} onRejected The callback for the loading failure. + * @return {Promise} A promise that is resolved after the onFulfilled or + * onRejected callback. + */ + then: function PDFDocumentLoadingTask_then(onFulfilled, onRejected) { + return this.promise.then.apply(this.promise, arguments); + } + }; + + return PDFDocumentLoadingTask; +})(); + +/** + * Abstract class to support range requests file loading. + * @class + */ +var PDFDataRangeTransport = (function pdfDataRangeTransportClosure() { + /** + * @constructs PDFDataRangeTransport + * @param {number} length + * @param {Uint8Array} initialData + */ + function PDFDataRangeTransport(length, initialData) { + this.length = length; + this.initialData = initialData; + + this._rangeListeners = []; + this._progressListeners = []; + this._progressiveReadListeners = []; + this._readyCapability = createPromiseCapability(); + } + PDFDataRangeTransport.prototype = + /** @lends PDFDataRangeTransport.prototype */ { + addRangeListener: + function PDFDataRangeTransport_addRangeListener(listener) { + this._rangeListeners.push(listener); + }, + + addProgressListener: + function PDFDataRangeTransport_addProgressListener(listener) { + this._progressListeners.push(listener); + }, + + addProgressiveReadListener: + function PDFDataRangeTransport_addProgressiveReadListener(listener) { + this._progressiveReadListeners.push(listener); + }, + + onDataRange: function PDFDataRangeTransport_onDataRange(begin, chunk) { + var listeners = this._rangeListeners; + for (var i = 0, n = listeners.length; i < n; ++i) { + listeners[i](begin, chunk); + } + }, + + onDataProgress: function PDFDataRangeTransport_onDataProgress(loaded) { + this._readyCapability.promise.then(function () { + var listeners = this._progressListeners; + for (var i = 0, n = listeners.length; i < n; ++i) { + listeners[i](loaded); + } + }.bind(this)); + }, + + onDataProgressiveRead: + function PDFDataRangeTransport_onDataProgress(chunk) { + this._readyCapability.promise.then(function () { + var listeners = this._progressiveReadListeners; + for (var i = 0, n = listeners.length; i < n; ++i) { + listeners[i](chunk); + } + }.bind(this)); + }, + + transportReady: function PDFDataRangeTransport_transportReady() { + this._readyCapability.resolve(); + }, + + requestDataRange: + function PDFDataRangeTransport_requestDataRange(begin, end) { + throw new Error('Abstract method PDFDataRangeTransport.requestDataRange'); + } + }; + return PDFDataRangeTransport; +})(); + +PDFJS.PDFDataRangeTransport = PDFDataRangeTransport; + +/** + * Proxy to a PDFDocument in the worker thread. Also, contains commonly used + * properties that can be read synchronously. + * @class + */ +var PDFDocumentProxy = (function PDFDocumentProxyClosure() { + function PDFDocumentProxy(pdfInfo, transport) { + this.pdfInfo = pdfInfo; + this.transport = transport; + } + PDFDocumentProxy.prototype = /** @lends PDFDocumentProxy.prototype */ { + /** + * @return {number} Total number of pages the PDF contains. + */ + get numPages() { + return this.pdfInfo.numPages; + }, + /** + * @return {string} A unique ID to identify a PDF. Not guaranteed to be + * unique. + */ + get fingerprint() { + return this.pdfInfo.fingerprint; + }, + /** + * @param {number} pageNumber The page number to get. The first page is 1. + * @return {Promise} A promise that is resolved with a {@link PDFPageProxy} + * object. + */ + getPage: function PDFDocumentProxy_getPage(pageNumber) { + return this.transport.getPage(pageNumber); + }, + /** + * @param {{num: number, gen: number}} ref The page reference. Must have + * the 'num' and 'gen' properties. + * @return {Promise} A promise that is resolved with the page index that is + * associated with the reference. + */ + getPageIndex: function PDFDocumentProxy_getPageIndex(ref) { + return this.transport.getPageIndex(ref); + }, + /** + * @return {Promise} A promise that is resolved with a lookup table for + * mapping named destinations to reference numbers. + * + * This can be slow for large documents: use getDestination instead + */ + getDestinations: function PDFDocumentProxy_getDestinations() { + return this.transport.getDestinations(); + }, + /** + * @param {string} id The named destination to get. + * @return {Promise} A promise that is resolved with all information + * of the given named destination. + */ + getDestination: function PDFDocumentProxy_getDestination(id) { + return this.transport.getDestination(id); + }, + /** + * @return {Promise} A promise that is resolved with a lookup table for + * mapping named attachments to their content. + */ + getAttachments: function PDFDocumentProxy_getAttachments() { + return this.transport.getAttachments(); + }, + /** + * @return {Promise} A promise that is resolved with an array of all the + * JavaScript strings in the name tree. + */ + getJavaScript: function PDFDocumentProxy_getJavaScript() { + return this.transport.getJavaScript(); + }, + /** + * @return {Promise} A promise that is resolved with an {Array} that is a + * tree outline (if it has one) of the PDF. The tree is in the format of: + * [ + * { + * title: string, + * bold: boolean, + * italic: boolean, + * color: rgb array, + * dest: dest obj, + * items: array of more items like this + * }, + * ... + * ]. + */ + getOutline: function PDFDocumentProxy_getOutline() { + return this.transport.getOutline(); + }, + /** + * @return {Promise} A promise that is resolved with an {Object} that has + * info and metadata properties. Info is an {Object} filled with anything + * available in the information dictionary and similarly metadata is a + * {Metadata} object with information from the metadata section of the PDF. + */ + getMetadata: function PDFDocumentProxy_getMetadata() { + return this.transport.getMetadata(); + }, + /** + * @return {Promise} A promise that is resolved with a TypedArray that has + * the raw data from the PDF. + */ + getData: function PDFDocumentProxy_getData() { + return this.transport.getData(); + }, + /** + * @return {Promise} A promise that is resolved when the document's data + * is loaded. It is resolved with an {Object} that contains the length + * property that indicates size of the PDF data in bytes. + */ + getDownloadInfo: function PDFDocumentProxy_getDownloadInfo() { + return this.transport.downloadInfoCapability.promise; + }, + /** + * @return {Promise} A promise this is resolved with current stats about + * document structures (see {@link PDFDocumentStats}). + */ + getStats: function PDFDocumentProxy_getStats() { + return this.transport.getStats(); + }, + /** + * Cleans up resources allocated by the document, e.g. created @font-face. + */ + cleanup: function PDFDocumentProxy_cleanup() { + this.transport.startCleanup(); + }, + /** + * Destroys current document instance and terminates worker. + */ + destroy: function PDFDocumentProxy_destroy() { + this.transport.destroy(); + } + }; + return PDFDocumentProxy; +})(); + +/** + * Page text content. + * + * @typedef {Object} TextContent + * @property {array} items - array of {@link TextItem} + * @property {Object} styles - {@link TextStyles} objects, indexed by font + * name. + */ + +/** + * Page text content part. + * + * @typedef {Object} TextItem + * @property {string} str - text content. + * @property {string} dir - text direction: 'ttb', 'ltr' or 'rtl'. + * @property {array} transform - transformation matrix. + * @property {number} width - width in device space. + * @property {number} height - height in device space. + * @property {string} fontName - font name used by pdf.js for converted font. + */ + +/** + * Text style. + * + * @typedef {Object} TextStyle + * @property {number} ascent - font ascent. + * @property {number} descent - font descent. + * @property {boolean} vertical - text is in vertical mode. + * @property {string} fontFamily - possible font family + */ + +/** + * Page render parameters. + * + * @typedef {Object} RenderParameters + * @property {Object} canvasContext - A 2D context of a DOM Canvas object. + * @property {PDFJS.PageViewport} viewport - Rendering viewport obtained by + * calling of PDFPage.getViewport method. + * @property {string} intent - Rendering intent, can be 'display' or 'print' + * (default value is 'display'). + * @property {Object} imageLayer - (optional) An object that has beginLayout, + * endLayout and appendImage functions. + * @property {function} continueCallback - (deprecated) A function that will be + * called each time the rendering is paused. To continue + * rendering call the function that is the first argument + * to the callback. + */ + +/** + * PDF page operator list. + * + * @typedef {Object} PDFOperatorList + * @property {Array} fnArray - Array containing the operator functions. + * @property {Array} argsArray - Array containing the arguments of the + * functions. + */ + +/** + * Proxy to a PDFPage in the worker thread. + * @class + */ +var PDFPageProxy = (function PDFPageProxyClosure() { + function PDFPageProxy(pageIndex, pageInfo, transport) { + this.pageIndex = pageIndex; + this.pageInfo = pageInfo; + this.transport = transport; + this.stats = new StatTimer(); + this.stats.enabled = !!globalScope.PDFJS.enableStats; + this.commonObjs = transport.commonObjs; + this.objs = new PDFObjects(); + this.cleanupAfterRender = false; + this.pendingDestroy = false; + this.intentStates = {}; + } + PDFPageProxy.prototype = /** @lends PDFPageProxy.prototype */ { + /** + * @return {number} Page number of the page. First page is 1. + */ + get pageNumber() { + return this.pageIndex + 1; + }, + /** + * @return {number} The number of degrees the page is rotated clockwise. + */ + get rotate() { + return this.pageInfo.rotate; + }, + /** + * @return {Object} The reference that points to this page. It has 'num' and + * 'gen' properties. + */ + get ref() { + return this.pageInfo.ref; + }, + /** + * @return {Array} An array of the visible portion of the PDF page in the + * user space units - [x1, y1, x2, y2]. + */ + get view() { + return this.pageInfo.view; + }, + /** + * @param {number} scale The desired scale of the viewport. + * @param {number} rotate Degrees to rotate the viewport. If omitted this + * defaults to the page rotation. + * @return {PDFJS.PageViewport} Contains 'width' and 'height' properties + * along with transforms required for rendering. + */ + getViewport: function PDFPageProxy_getViewport(scale, rotate) { + if (arguments.length < 2) { + rotate = this.rotate; + } + return new PDFJS.PageViewport(this.view, scale, rotate, 0, 0); + }, + /** + * @return {Promise} A promise that is resolved with an {Array} of the + * annotation objects. + */ + getAnnotations: function PDFPageProxy_getAnnotations() { + if (this.annotationsPromise) { + return this.annotationsPromise; + } + + var promise = this.transport.getAnnotations(this.pageIndex); + this.annotationsPromise = promise; + return promise; + }, + /** + * Begins the process of rendering a page to the desired context. + * @param {RenderParameters} params Page render parameters. + * @return {RenderTask} An object that contains the promise, which + * is resolved when the page finishes rendering. + */ + render: function PDFPageProxy_render(params) { + var stats = this.stats; + stats.time('Overall'); + + // If there was a pending destroy cancel it so no cleanup happens during + // this call to render. + this.pendingDestroy = false; + + var renderingIntent = (params.intent === 'print' ? 'print' : 'display'); + + if (!this.intentStates[renderingIntent]) { + this.intentStates[renderingIntent] = {}; + } + var intentState = this.intentStates[renderingIntent]; + + // If there's no displayReadyCapability yet, then the operatorList + // was never requested before. Make the request and create the promise. + if (!intentState.displayReadyCapability) { + intentState.receivingOperatorList = true; + intentState.displayReadyCapability = createPromiseCapability(); + intentState.operatorList = { + fnArray: [], + argsArray: [], + lastChunk: false + }; + + this.stats.time('Page Request'); + this.transport.messageHandler.send('RenderPageRequest', { + pageIndex: this.pageNumber - 1, + intent: renderingIntent + }); + } + + var internalRenderTask = new InternalRenderTask(complete, params, + this.objs, + this.commonObjs, + intentState.operatorList, + this.pageNumber); + if (!intentState.renderTasks) { + intentState.renderTasks = []; + } + intentState.renderTasks.push(internalRenderTask); + var renderTask = internalRenderTask.task; + + // Obsolete parameter support + if (params.continueCallback) { + renderTask.onContinue = params.continueCallback; + } + + var self = this; + intentState.displayReadyCapability.promise.then( + function pageDisplayReadyPromise(transparency) { + if (self.pendingDestroy) { + complete(); + return; + } + stats.time('Rendering'); + internalRenderTask.initalizeGraphics(transparency); + internalRenderTask.operatorListChanged(); + }, + function pageDisplayReadPromiseError(reason) { + complete(reason); + } + ); + + function complete(error) { + var i = intentState.renderTasks.indexOf(internalRenderTask); + if (i >= 0) { + intentState.renderTasks.splice(i, 1); + } + + if (self.cleanupAfterRender) { + self.pendingDestroy = true; + } + self._tryDestroy(); + + if (error) { + internalRenderTask.capability.reject(error); + } else { + internalRenderTask.capability.resolve(); + } + stats.timeEnd('Rendering'); + stats.timeEnd('Overall'); + } + + return renderTask; + }, + + /** + * @return {Promise} A promise resolved with an {@link PDFOperatorList} + * object that represents page's operator list. + */ + getOperatorList: function PDFPageProxy_getOperatorList() { + function operatorListChanged() { + if (intentState.operatorList.lastChunk) { + intentState.opListReadCapability.resolve(intentState.operatorList); + } + } + + var renderingIntent = 'oplist'; + if (!this.intentStates[renderingIntent]) { + this.intentStates[renderingIntent] = {}; + } + var intentState = this.intentStates[renderingIntent]; + + if (!intentState.opListReadCapability) { + var opListTask = {}; + opListTask.operatorListChanged = operatorListChanged; + intentState.receivingOperatorList = true; + intentState.opListReadCapability = createPromiseCapability(); + intentState.renderTasks = []; + intentState.renderTasks.push(opListTask); + intentState.operatorList = { + fnArray: [], + argsArray: [], + lastChunk: false + }; + + this.transport.messageHandler.send('RenderPageRequest', { + pageIndex: this.pageIndex, + intent: renderingIntent + }); + } + return intentState.opListReadCapability.promise; + }, + + /** + * @return {Promise} That is resolved a {@link TextContent} + * object that represent the page text content. + */ + getTextContent: function PDFPageProxy_getTextContent() { + return this.transport.messageHandler.sendWithPromise('GetTextContent', { + pageIndex: this.pageNumber - 1 + }); + }, + /** + * Destroys resources allocated by the page. + */ + destroy: function PDFPageProxy_destroy() { + this.pendingDestroy = true; + this._tryDestroy(); + }, + /** + * For internal use only. Attempts to clean up if rendering is in a state + * where that's possible. + * @ignore + */ + _tryDestroy: function PDFPageProxy__destroy() { + if (!this.pendingDestroy || + Object.keys(this.intentStates).some(function(intent) { + var intentState = this.intentStates[intent]; + return (intentState.renderTasks.length !== 0 || + intentState.receivingOperatorList); + }, this)) { + return; + } + + Object.keys(this.intentStates).forEach(function(intent) { + delete this.intentStates[intent]; + }, this); + this.objs.clear(); + this.annotationsPromise = null; + this.pendingDestroy = false; + }, + /** + * For internal use only. + * @ignore + */ + _startRenderPage: function PDFPageProxy_startRenderPage(transparency, + intent) { + var intentState = this.intentStates[intent]; + // TODO Refactor RenderPageRequest to separate rendering + // and operator list logic + if (intentState.displayReadyCapability) { + intentState.displayReadyCapability.resolve(transparency); + } + }, + /** + * For internal use only. + * @ignore + */ + _renderPageChunk: function PDFPageProxy_renderPageChunk(operatorListChunk, + intent) { + var intentState = this.intentStates[intent]; + var i, ii; + // Add the new chunk to the current operator list. + for (i = 0, ii = operatorListChunk.length; i < ii; i++) { + intentState.operatorList.fnArray.push(operatorListChunk.fnArray[i]); + intentState.operatorList.argsArray.push( + operatorListChunk.argsArray[i]); + } + intentState.operatorList.lastChunk = operatorListChunk.lastChunk; + + // Notify all the rendering tasks there are more operators to be consumed. + for (i = 0; i < intentState.renderTasks.length; i++) { + intentState.renderTasks[i].operatorListChanged(); + } + + if (operatorListChunk.lastChunk) { + intentState.receivingOperatorList = false; + this._tryDestroy(); + } + } + }; + return PDFPageProxy; +})(); + +/** + * For internal use only. + * @ignore + */ +var WorkerTransport = (function WorkerTransportClosure() { + function WorkerTransport(workerInitializedCapability, pdfDataRangeTransport) { + this.pdfDataRangeTransport = pdfDataRangeTransport; + this.workerInitializedCapability = workerInitializedCapability; + this.commonObjs = new PDFObjects(); + + this.loadingTask = null; + + this.pageCache = []; + this.pagePromises = []; + this.downloadInfoCapability = createPromiseCapability(); + + // If worker support isn't disabled explicit and the browser has worker + // support, create a new web worker and test if it/the browser fullfills + // all requirements to run parts of pdf.js in a web worker. + // Right now, the requirement is, that an Uint8Array is still an Uint8Array + // as it arrives on the worker. Chrome added this with version 15. +//#if !SINGLE_FILE + if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') { + var workerSrc = PDFJS.workerSrc; + if (!workerSrc) { + error('No PDFJS.workerSrc specified'); + } + + try { + // Some versions of FF can't create a worker on localhost, see: + // https://bugzilla.mozilla.org/show_bug.cgi?id=683280 + var worker = new Worker(workerSrc); + var messageHandler = new MessageHandler('main', worker); + this.messageHandler = messageHandler; + + messageHandler.on('test', function transportTest(data) { + var supportTypedArray = data && data.supportTypedArray; + if (supportTypedArray) { + this.worker = worker; + if (!data.supportTransfers) { + PDFJS.postMessageTransfers = false; + } + this.setupMessageHandler(messageHandler); + workerInitializedCapability.resolve(); + } else { + this.setupFakeWorker(); + } + }.bind(this)); + + var testObj = new Uint8Array([PDFJS.postMessageTransfers ? 255 : 0]); + // Some versions of Opera throw a DATA_CLONE_ERR on serializing the + // typed array. Also, checking if we can use transfers. + try { + messageHandler.send('test', testObj, [testObj.buffer]); + } catch (ex) { + info('Cannot use postMessage transfers'); + testObj[0] = 0; + messageHandler.send('test', testObj); + } + return; + } catch (e) { + info('The worker has been disabled.'); + } + } +//#endif + // Either workers are disabled, not supported or have thrown an exception. + // Thus, we fallback to a faked worker. + this.setupFakeWorker(); + } + WorkerTransport.prototype = { + destroy: function WorkerTransport_destroy() { + this.pageCache = []; + this.pagePromises = []; + var self = this; + this.messageHandler.sendWithPromise('Terminate', null).then(function () { + FontLoader.clear(); + if (self.worker) { + self.worker.terminate(); + } + }); + }, + + setupFakeWorker: function WorkerTransport_setupFakeWorker() { + globalScope.PDFJS.disableWorker = true; + + if (!PDFJS.fakeWorkerFilesLoadedCapability) { + PDFJS.fakeWorkerFilesLoadedCapability = createPromiseCapability(); + // In the developer build load worker_loader which in turn loads all the + // other files and resolves the promise. In production only the + // pdf.worker.js file is needed. +//#if !PRODUCTION + Util.loadScript(PDFJS.workerSrc); +//#endif +//#if PRODUCTION && SINGLE_FILE +// PDFJS.fakeWorkerFilesLoadedCapability.resolve(); +//#endif +//#if PRODUCTION && !SINGLE_FILE +// Util.loadScript(PDFJS.workerSrc, function() { +// PDFJS.fakeWorkerFilesLoadedCapability.resolve(); +// }); +//#endif + } + PDFJS.fakeWorkerFilesLoadedCapability.promise.then(function () { + warn('Setting up fake worker.'); + // If we don't use a worker, just post/sendMessage to the main thread. + var fakeWorker = { + postMessage: function WorkerTransport_postMessage(obj) { + fakeWorker.onmessage({data: obj}); + }, + terminate: function WorkerTransport_terminate() {} + }; + + var messageHandler = new MessageHandler('main', fakeWorker); + this.setupMessageHandler(messageHandler); + + // If the main thread is our worker, setup the handling for the messages + // the main thread sends to it self. + PDFJS.WorkerMessageHandler.setup(messageHandler); + + this.workerInitializedCapability.resolve(); + }.bind(this)); + }, + + setupMessageHandler: + function WorkerTransport_setupMessageHandler(messageHandler) { + this.messageHandler = messageHandler; + + function updatePassword(password) { + messageHandler.send('UpdatePassword', password); + } + + var pdfDataRangeTransport = this.pdfDataRangeTransport; + if (pdfDataRangeTransport) { + pdfDataRangeTransport.addRangeListener(function(begin, chunk) { + messageHandler.send('OnDataRange', { + begin: begin, + chunk: chunk + }); + }); + + pdfDataRangeTransport.addProgressListener(function(loaded) { + messageHandler.send('OnDataProgress', { + loaded: loaded + }); + }); + + pdfDataRangeTransport.addProgressiveReadListener(function(chunk) { + messageHandler.send('OnDataRange', { + chunk: chunk + }); + }); + + messageHandler.on('RequestDataRange', + function transportDataRange(data) { + pdfDataRangeTransport.requestDataRange(data.begin, data.end); + }, this); + } + + messageHandler.on('GetDoc', function transportDoc(data) { + var pdfInfo = data.pdfInfo; + this.numPages = data.pdfInfo.numPages; + var pdfDocument = new PDFDocumentProxy(pdfInfo, this); + this.pdfDocument = pdfDocument; + this.loadingTask._capability.resolve(pdfDocument); + }, this); + + messageHandler.on('NeedPassword', + function transportNeedPassword(exception) { + var loadingTask = this.loadingTask; + if (loadingTask.onPassword) { + return loadingTask.onPassword(updatePassword, + PasswordResponses.NEED_PASSWORD); + } + loadingTask._capability.reject( + new PasswordException(exception.message, exception.code)); + }, this); + + messageHandler.on('IncorrectPassword', + function transportIncorrectPassword(exception) { + var loadingTask = this.loadingTask; + if (loadingTask.onPassword) { + return loadingTask.onPassword(updatePassword, + PasswordResponses.INCORRECT_PASSWORD); + } + loadingTask._capability.reject( + new PasswordException(exception.message, exception.code)); + }, this); + + messageHandler.on('InvalidPDF', function transportInvalidPDF(exception) { + this.loadingTask._capability.reject( + new InvalidPDFException(exception.message)); + }, this); + + messageHandler.on('MissingPDF', function transportMissingPDF(exception) { + this.loadingTask._capability.reject( + new MissingPDFException(exception.message)); + }, this); + + messageHandler.on('UnexpectedResponse', + function transportUnexpectedResponse(exception) { + this.loadingTask._capability.reject( + new UnexpectedResponseException(exception.message, exception.status)); + }, this); + + messageHandler.on('UnknownError', + function transportUnknownError(exception) { + this.loadingTask._capability.reject( + new UnknownErrorException(exception.message, exception.details)); + }, this); + + messageHandler.on('DataLoaded', function transportPage(data) { + this.downloadInfoCapability.resolve(data); + }, this); + + messageHandler.on('PDFManagerReady', function transportPage(data) { + if (this.pdfDataRangeTransport) { + this.pdfDataRangeTransport.transportReady(); + } + }, this); + + messageHandler.on('StartRenderPage', function transportRender(data) { + var page = this.pageCache[data.pageIndex]; + + page.stats.timeEnd('Page Request'); + page._startRenderPage(data.transparency, data.intent); + }, this); + + messageHandler.on('RenderPageChunk', function transportRender(data) { + var page = this.pageCache[data.pageIndex]; + + page._renderPageChunk(data.operatorList, data.intent); + }, this); + + messageHandler.on('commonobj', function transportObj(data) { + var id = data[0]; + var type = data[1]; + if (this.commonObjs.hasData(id)) { + return; + } + + switch (type) { + case 'Font': + var exportedData = data[2]; + + var font; + if ('error' in exportedData) { + var error = exportedData.error; + warn('Error during font loading: ' + error); + this.commonObjs.resolve(id, error); + break; + } else { + font = new FontFaceObject(exportedData); + } + + FontLoader.bind( + [font], + function fontReady(fontObjs) { + this.commonObjs.resolve(id, font); + }.bind(this) + ); + break; + case 'FontPath': + this.commonObjs.resolve(id, data[2]); + break; + default: + error('Got unknown common object type ' + type); + } + }, this); + + messageHandler.on('obj', function transportObj(data) { + var id = data[0]; + var pageIndex = data[1]; + var type = data[2]; + var pageProxy = this.pageCache[pageIndex]; + var imageData; + if (pageProxy.objs.hasData(id)) { + return; + } + + switch (type) { + case 'JpegStream': + imageData = data[3]; + loadJpegStream(id, imageData, pageProxy.objs); + break; + case 'Image': + imageData = data[3]; + pageProxy.objs.resolve(id, imageData); + + // heuristics that will allow not to store large data + var MAX_IMAGE_SIZE_TO_STORE = 8000000; + if (imageData && 'data' in imageData && + imageData.data.length > MAX_IMAGE_SIZE_TO_STORE) { + pageProxy.cleanupAfterRender = true; + } + break; + default: + error('Got unknown object type ' + type); + } + }, this); + + messageHandler.on('DocProgress', function transportDocProgress(data) { + var loadingTask = this.loadingTask; + if (loadingTask.onProgress) { + loadingTask.onProgress({ + loaded: data.loaded, + total: data.total + }); + } + }, this); + + messageHandler.on('PageError', function transportError(data) { + var page = this.pageCache[data.pageNum - 1]; + var intentState = page.intentStates[data.intent]; + if (intentState.displayReadyCapability) { + intentState.displayReadyCapability.reject(data.error); + } else { + error(data.error); + } + }, this); + + messageHandler.on('JpegDecode', function(data) { + var imageUrl = data[0]; + var components = data[1]; + if (components !== 3 && components !== 1) { + return Promise.reject( + new Error('Only 3 components or 1 component can be returned')); + } + + return new Promise(function (resolve, reject) { + var img = new Image(); + img.onload = function () { + var width = img.width; + var height = img.height; + var size = width * height; + var rgbaLength = size * 4; + var buf = new Uint8Array(size * components); + var tmpCanvas = createScratchCanvas(width, height); + var tmpCtx = tmpCanvas.getContext('2d'); + tmpCtx.drawImage(img, 0, 0); + var data = tmpCtx.getImageData(0, 0, width, height).data; + var i, j; + + if (components === 3) { + for (i = 0, j = 0; i < rgbaLength; i += 4, j += 3) { + buf[j] = data[i]; + buf[j + 1] = data[i + 1]; + buf[j + 2] = data[i + 2]; + } + } else if (components === 1) { + for (i = 0, j = 0; i < rgbaLength; i += 4, j++) { + buf[j] = data[i]; + } + } + resolve({ data: buf, width: width, height: height}); + }; + img.onerror = function () { + reject(new Error('JpegDecode failed to load image')); + }; + img.src = imageUrl; + }); + }); + }, + + fetchDocument: function WorkerTransport_fetchDocument(loadingTask, source) { + this.loadingTask = loadingTask; + + source.disableAutoFetch = PDFJS.disableAutoFetch; + source.disableStream = PDFJS.disableStream; + source.chunkedViewerLoading = !!this.pdfDataRangeTransport; + if (this.pdfDataRangeTransport) { + source.length = this.pdfDataRangeTransport.length; + source.initialData = this.pdfDataRangeTransport.initialData; + } + this.messageHandler.send('GetDocRequest', { + source: source, + disableRange: PDFJS.disableRange, + maxImageSize: PDFJS.maxImageSize, + cMapUrl: PDFJS.cMapUrl, + cMapPacked: PDFJS.cMapPacked, + disableFontFace: PDFJS.disableFontFace, + disableCreateObjectURL: PDFJS.disableCreateObjectURL, + verbosity: PDFJS.verbosity + }); + }, + + getData: function WorkerTransport_getData() { + return this.messageHandler.sendWithPromise('GetData', null); + }, + + getPage: function WorkerTransport_getPage(pageNumber, capability) { + if (pageNumber <= 0 || pageNumber > this.numPages || + (pageNumber|0) !== pageNumber) { + return Promise.reject(new Error('Invalid page request')); + } + + var pageIndex = pageNumber - 1; + if (pageIndex in this.pagePromises) { + return this.pagePromises[pageIndex]; + } + var promise = this.messageHandler.sendWithPromise('GetPage', { + pageIndex: pageIndex + }).then(function (pageInfo) { + var page = new PDFPageProxy(pageIndex, pageInfo, this); + this.pageCache[pageIndex] = page; + return page; + }.bind(this)); + this.pagePromises[pageIndex] = promise; + return promise; + }, + + getPageIndex: function WorkerTransport_getPageIndexByRef(ref) { + return this.messageHandler.sendWithPromise('GetPageIndex', { ref: ref }); + }, + + getAnnotations: function WorkerTransport_getAnnotations(pageIndex) { + return this.messageHandler.sendWithPromise('GetAnnotations', + { pageIndex: pageIndex }); + }, + + getDestinations: function WorkerTransport_getDestinations() { + return this.messageHandler.sendWithPromise('GetDestinations', null); + }, + + getDestination: function WorkerTransport_getDestination(id) { + return this.messageHandler.sendWithPromise('GetDestination', { id: id } ); + }, + + getAttachments: function WorkerTransport_getAttachments() { + return this.messageHandler.sendWithPromise('GetAttachments', null); + }, + + getJavaScript: function WorkerTransport_getJavaScript() { + return this.messageHandler.sendWithPromise('GetJavaScript', null); + }, + + getOutline: function WorkerTransport_getOutline() { + return this.messageHandler.sendWithPromise('GetOutline', null); + }, + + getMetadata: function WorkerTransport_getMetadata() { + return this.messageHandler.sendWithPromise('GetMetadata', null). + then(function transportMetadata(results) { + return { + info: results[0], + metadata: (results[1] ? new PDFJS.Metadata(results[1]) : null) + }; + }); + }, + + getStats: function WorkerTransport_getStats() { + return this.messageHandler.sendWithPromise('GetStats', null); + }, + + startCleanup: function WorkerTransport_startCleanup() { + this.messageHandler.sendWithPromise('Cleanup', null). + then(function endCleanup() { + for (var i = 0, ii = this.pageCache.length; i < ii; i++) { + var page = this.pageCache[i]; + if (page) { + page.destroy(); + } + } + this.commonObjs.clear(); + FontLoader.clear(); + }.bind(this)); + } + }; + return WorkerTransport; + +})(); + +/** + * A PDF document and page is built of many objects. E.g. there are objects + * for fonts, images, rendering code and such. These objects might get processed + * inside of a worker. The `PDFObjects` implements some basic functions to + * manage these objects. + * @ignore + */ +var PDFObjects = (function PDFObjectsClosure() { + function PDFObjects() { + this.objs = {}; + } + + PDFObjects.prototype = { + /** + * Internal function. + * Ensures there is an object defined for `objId`. + */ + ensureObj: function PDFObjects_ensureObj(objId) { + if (this.objs[objId]) { + return this.objs[objId]; + } + + var obj = { + capability: createPromiseCapability(), + data: null, + resolved: false + }; + this.objs[objId] = obj; + + return obj; + }, + + /** + * If called *without* callback, this returns the data of `objId` but the + * object needs to be resolved. If it isn't, this function throws. + * + * If called *with* a callback, the callback is called with the data of the + * object once the object is resolved. That means, if you call this + * function and the object is already resolved, the callback gets called + * right away. + */ + get: function PDFObjects_get(objId, callback) { + // If there is a callback, then the get can be async and the object is + // not required to be resolved right now + if (callback) { + this.ensureObj(objId).capability.promise.then(callback); + return null; + } + + // If there isn't a callback, the user expects to get the resolved data + // directly. + var obj = this.objs[objId]; + + // If there isn't an object yet or the object isn't resolved, then the + // data isn't ready yet! + if (!obj || !obj.resolved) { + error('Requesting object that isn\'t resolved yet ' + objId); + } + + return obj.data; + }, + + /** + * Resolves the object `objId` with optional `data`. + */ + resolve: function PDFObjects_resolve(objId, data) { + var obj = this.ensureObj(objId); + + obj.resolved = true; + obj.data = data; + obj.capability.resolve(data); + }, + + isResolved: function PDFObjects_isResolved(objId) { + var objs = this.objs; + + if (!objs[objId]) { + return false; + } else { + return objs[objId].resolved; + } + }, + + hasData: function PDFObjects_hasData(objId) { + return this.isResolved(objId); + }, + + /** + * Returns the data of `objId` if object exists, null otherwise. + */ + getData: function PDFObjects_getData(objId) { + var objs = this.objs; + if (!objs[objId] || !objs[objId].resolved) { + return null; + } else { + return objs[objId].data; + } + }, + + clear: function PDFObjects_clear() { + this.objs = {}; + } + }; + return PDFObjects; +})(); + +/** + * Allows controlling of the rendering tasks. + * @class + */ +var RenderTask = (function RenderTaskClosure() { + function RenderTask(internalRenderTask) { + this._internalRenderTask = internalRenderTask; + + /** + * Callback for incremental rendering -- a function that will be called + * each time the rendering is paused. To continue rendering call the + * function that is the first argument to the callback. + * @type {function} + */ + this.onContinue = null; + } + + RenderTask.prototype = /** @lends RenderTask.prototype */ { + /** + * Promise for rendering task completion. + * @return {Promise} + */ + get promise() { + return this._internalRenderTask.capability.promise; + }, + + /** + * Cancels the rendering task. If the task is currently rendering it will + * not be cancelled until graphics pauses with a timeout. The promise that + * this object extends will resolved when cancelled. + */ + cancel: function RenderTask_cancel() { + this._internalRenderTask.cancel(); + }, + + /** + * Registers callbacks to indicate the rendering task completion. + * + * @param {function} onFulfilled The callback for the rendering completion. + * @param {function} onRejected The callback for the rendering failure. + * @return {Promise} A promise that is resolved after the onFulfilled or + * onRejected callback. + */ + then: function RenderTask_then(onFulfilled, onRejected) { + return this.promise.then.apply(this.promise, arguments); + } + }; + + return RenderTask; +})(); + +/** + * For internal use only. + * @ignore + */ +var InternalRenderTask = (function InternalRenderTaskClosure() { + + function InternalRenderTask(callback, params, objs, commonObjs, operatorList, + pageNumber) { + this.callback = callback; + this.params = params; + this.objs = objs; + this.commonObjs = commonObjs; + this.operatorListIdx = null; + this.operatorList = operatorList; + this.pageNumber = pageNumber; + this.running = false; + this.graphicsReadyCallback = null; + this.graphicsReady = false; + this.cancelled = false; + this.capability = createPromiseCapability(); + this.task = new RenderTask(this); + // caching this-bound methods + this._continueBound = this._continue.bind(this); + this._scheduleNextBound = this._scheduleNext.bind(this); + this._nextBound = this._next.bind(this); + } + + InternalRenderTask.prototype = { + + initalizeGraphics: + function InternalRenderTask_initalizeGraphics(transparency) { + + if (this.cancelled) { + return; + } + if (PDFJS.pdfBug && 'StepperManager' in globalScope && + globalScope.StepperManager.enabled) { + this.stepper = globalScope.StepperManager.create(this.pageNumber - 1); + this.stepper.init(this.operatorList); + this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint(); + } + + var params = this.params; + this.gfx = new CanvasGraphics(params.canvasContext, this.commonObjs, + this.objs, params.imageLayer); + + this.gfx.beginDrawing(params.viewport, transparency); + this.operatorListIdx = 0; + this.graphicsReady = true; + if (this.graphicsReadyCallback) { + this.graphicsReadyCallback(); + } + }, + + cancel: function InternalRenderTask_cancel() { + this.running = false; + this.cancelled = true; + this.callback('cancelled'); + }, + + operatorListChanged: function InternalRenderTask_operatorListChanged() { + if (!this.graphicsReady) { + if (!this.graphicsReadyCallback) { + this.graphicsReadyCallback = this._continueBound; + } + return; + } + + if (this.stepper) { + this.stepper.updateOperatorList(this.operatorList); + } + + if (this.running) { + return; + } + this._continue(); + }, + + _continue: function InternalRenderTask__continue() { + this.running = true; + if (this.cancelled) { + return; + } + if (this.task.onContinue) { + this.task.onContinue.call(this.task, this._scheduleNextBound); + } else { + this._scheduleNext(); + } + }, + + _scheduleNext: function InternalRenderTask__scheduleNext() { + window.requestAnimationFrame(this._nextBound); + }, + + _next: function InternalRenderTask__next() { + if (this.cancelled) { + return; + } + this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList, + this.operatorListIdx, + this._continueBound, + this.stepper); + if (this.operatorListIdx === this.operatorList.argsArray.length) { + this.running = false; + if (this.operatorList.lastChunk) { + this.gfx.endDrawing(); + this.callback(); + } + } + } + + }; + + return InternalRenderTask; +})(); + + +var Metadata = PDFJS.Metadata = (function MetadataClosure() { + function fixMetadata(meta) { + return meta.replace(/>\\376\\377([^<]+)/g, function(all, codes) { + var bytes = codes.replace(/\\([0-3])([0-7])([0-7])/g, + function(code, d1, d2, d3) { + return String.fromCharCode(d1 * 64 + d2 * 8 + d3 * 1); + }); + var chars = ''; + for (var i = 0; i < bytes.length; i += 2) { + var code = bytes.charCodeAt(i) * 256 + bytes.charCodeAt(i + 1); + chars += code >= 32 && code < 127 && code !== 60 && code !== 62 && + code !== 38 && false ? String.fromCharCode(code) : + '&#x' + (0x10000 + code).toString(16).substring(1) + ';'; + } + return '>' + chars; + }); + } + + function Metadata(meta) { + if (typeof meta === 'string') { + // Ghostscript produces invalid metadata + meta = fixMetadata(meta); + + var parser = new DOMParser(); + meta = parser.parseFromString(meta, 'application/xml'); + } else if (!(meta instanceof Document)) { + error('Metadata: Invalid metadata object'); + } + + this.metaDocument = meta; + this.metadata = {}; + this.parse(); + } + + Metadata.prototype = { + parse: function Metadata_parse() { + var doc = this.metaDocument; + var rdf = doc.documentElement; + + if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') { // Wrapped in + rdf = rdf.firstChild; + while (rdf && rdf.nodeName.toLowerCase() !== 'rdf:rdf') { + rdf = rdf.nextSibling; + } + } + + var nodeName = (rdf) ? rdf.nodeName.toLowerCase() : null; + if (!rdf || nodeName !== 'rdf:rdf' || !rdf.hasChildNodes()) { + return; + } + + var children = rdf.childNodes, desc, entry, name, i, ii, length, iLength; + for (i = 0, length = children.length; i < length; i++) { + desc = children[i]; + if (desc.nodeName.toLowerCase() !== 'rdf:description') { + continue; + } + + for (ii = 0, iLength = desc.childNodes.length; ii < iLength; ii++) { + if (desc.childNodes[ii].nodeName.toLowerCase() !== '#text') { + entry = desc.childNodes[ii]; + name = entry.nodeName.toLowerCase(); + this.metadata[name] = entry.textContent.trim(); + } + } + } + }, + + get: function Metadata_get(name) { + return this.metadata[name] || null; + }, + + has: function Metadata_has(name) { + return typeof this.metadata[name] !== 'undefined'; + } + }; + + return Metadata; +})(); + + +// contexts store most of the state we need natively. +// However, PDF needs a bit more state, which we store here. + +// Minimal font size that would be used during canvas fillText operations. +var MIN_FONT_SIZE = 16; +// Maximum font size that would be used during canvas fillText operations. +var MAX_FONT_SIZE = 100; +var MAX_GROUP_SIZE = 4096; + +// Heuristic value used when enforcing minimum line widths. +var MIN_WIDTH_FACTOR = 0.65; + +var COMPILE_TYPE3_GLYPHS = true; +var MAX_SIZE_TO_COMPILE = 1000; + +var FULL_CHUNK_HEIGHT = 16; + +function createScratchCanvas(width, height) { + var canvas = document.createElement('canvas'); + canvas.width = width; + canvas.height = height; + return canvas; +} + +function addContextCurrentTransform(ctx) { + // If the context doesn't expose a `mozCurrentTransform`, add a JS based one. + if (!ctx.mozCurrentTransform) { + ctx._originalSave = ctx.save; + ctx._originalRestore = ctx.restore; + ctx._originalRotate = ctx.rotate; + ctx._originalScale = ctx.scale; + ctx._originalTranslate = ctx.translate; + ctx._originalTransform = ctx.transform; + ctx._originalSetTransform = ctx.setTransform; + + ctx._transformMatrix = ctx._transformMatrix || [1, 0, 0, 1, 0, 0]; + ctx._transformStack = []; + + Object.defineProperty(ctx, 'mozCurrentTransform', { + get: function getCurrentTransform() { + return this._transformMatrix; + } + }); + + Object.defineProperty(ctx, 'mozCurrentTransformInverse', { + get: function getCurrentTransformInverse() { + // Calculation done using WolframAlpha: + // http://www.wolframalpha.com/input/? + // i=Inverse+{{a%2C+c%2C+e}%2C+{b%2C+d%2C+f}%2C+{0%2C+0%2C+1}} + + var m = this._transformMatrix; + var a = m[0], b = m[1], c = m[2], d = m[3], e = m[4], f = m[5]; + + var ad_bc = a * d - b * c; + var bc_ad = b * c - a * d; + + return [ + d / ad_bc, + b / bc_ad, + c / bc_ad, + a / ad_bc, + (d * e - c * f) / bc_ad, + (b * e - a * f) / ad_bc + ]; + } + }); + + ctx.save = function ctxSave() { + var old = this._transformMatrix; + this._transformStack.push(old); + this._transformMatrix = old.slice(0, 6); + + this._originalSave(); + }; + + ctx.restore = function ctxRestore() { + var prev = this._transformStack.pop(); + if (prev) { + this._transformMatrix = prev; + this._originalRestore(); + } + }; + + ctx.translate = function ctxTranslate(x, y) { + var m = this._transformMatrix; + m[4] = m[0] * x + m[2] * y + m[4]; + m[5] = m[1] * x + m[3] * y + m[5]; + + this._originalTranslate(x, y); + }; + + ctx.scale = function ctxScale(x, y) { + var m = this._transformMatrix; + m[0] = m[0] * x; + m[1] = m[1] * x; + m[2] = m[2] * y; + m[3] = m[3] * y; + + this._originalScale(x, y); + }; + + ctx.transform = function ctxTransform(a, b, c, d, e, f) { + var m = this._transformMatrix; + this._transformMatrix = [ + m[0] * a + m[2] * b, + m[1] * a + m[3] * b, + m[0] * c + m[2] * d, + m[1] * c + m[3] * d, + m[0] * e + m[2] * f + m[4], + m[1] * e + m[3] * f + m[5] + ]; + + ctx._originalTransform(a, b, c, d, e, f); + }; + + ctx.setTransform = function ctxSetTransform(a, b, c, d, e, f) { + this._transformMatrix = [a, b, c, d, e, f]; + + ctx._originalSetTransform(a, b, c, d, e, f); + }; + + ctx.rotate = function ctxRotate(angle) { + var cosValue = Math.cos(angle); + var sinValue = Math.sin(angle); + + var m = this._transformMatrix; + this._transformMatrix = [ + m[0] * cosValue + m[2] * sinValue, + m[1] * cosValue + m[3] * sinValue, + m[0] * (-sinValue) + m[2] * cosValue, + m[1] * (-sinValue) + m[3] * cosValue, + m[4], + m[5] + ]; + + this._originalRotate(angle); + }; + } +} + +var CachedCanvases = (function CachedCanvasesClosure() { + var cache = {}; + return { + getCanvas: function CachedCanvases_getCanvas(id, width, height, + trackTransform) { + var canvasEntry; + if (cache[id] !== undefined) { + canvasEntry = cache[id]; + canvasEntry.canvas.width = width; + canvasEntry.canvas.height = height; + // reset canvas transform for emulated mozCurrentTransform, if needed + canvasEntry.context.setTransform(1, 0, 0, 1, 0, 0); + } else { + var canvas = createScratchCanvas(width, height); + var ctx = canvas.getContext('2d'); + if (trackTransform) { + addContextCurrentTransform(ctx); + } + cache[id] = canvasEntry = {canvas: canvas, context: ctx}; + } + return canvasEntry; + }, + clear: function () { + for (var id in cache) { + var canvasEntry = cache[id]; + // Zeroing the width and height causes Firefox to release graphics + // resources immediately, which can greatly reduce memory consumption. + canvasEntry.canvas.width = 0; + canvasEntry.canvas.height = 0; + delete cache[id]; + } + } + }; +})(); + +function compileType3Glyph(imgData) { + var POINT_TO_PROCESS_LIMIT = 1000; + + var width = imgData.width, height = imgData.height; + var i, j, j0, width1 = width + 1; + var points = new Uint8Array(width1 * (height + 1)); + var POINT_TYPES = + new Uint8Array([0, 2, 4, 0, 1, 0, 5, 4, 8, 10, 0, 8, 0, 2, 1, 0]); + + // decodes bit-packed mask data + var lineSize = (width + 7) & ~7, data0 = imgData.data; + var data = new Uint8Array(lineSize * height), pos = 0, ii; + for (i = 0, ii = data0.length; i < ii; i++) { + var mask = 128, elem = data0[i]; + while (mask > 0) { + data[pos++] = (elem & mask) ? 0 : 255; + mask >>= 1; + } + } + + // finding iteresting points: every point is located between mask pixels, + // so there will be points of the (width + 1)x(height + 1) grid. Every point + // will have flags assigned based on neighboring mask pixels: + // 4 | 8 + // --P-- + // 2 | 1 + // We are interested only in points with the flags: + // - outside corners: 1, 2, 4, 8; + // - inside corners: 7, 11, 13, 14; + // - and, intersections: 5, 10. + var count = 0; + pos = 0; + if (data[pos] !== 0) { + points[0] = 1; + ++count; + } + for (j = 1; j < width; j++) { + if (data[pos] !== data[pos + 1]) { + points[j] = data[pos] ? 2 : 1; + ++count; + } + pos++; + } + if (data[pos] !== 0) { + points[j] = 2; + ++count; + } + for (i = 1; i < height; i++) { + pos = i * lineSize; + j0 = i * width1; + if (data[pos - lineSize] !== data[pos]) { + points[j0] = data[pos] ? 1 : 8; + ++count; + } + // 'sum' is the position of the current pixel configuration in the 'TYPES' + // array (in order 8-1-2-4, so we can use '>>2' to shift the column). + var sum = (data[pos] ? 4 : 0) + (data[pos - lineSize] ? 8 : 0); + for (j = 1; j < width; j++) { + sum = (sum >> 2) + (data[pos + 1] ? 4 : 0) + + (data[pos - lineSize + 1] ? 8 : 0); + if (POINT_TYPES[sum]) { + points[j0 + j] = POINT_TYPES[sum]; + ++count; + } + pos++; + } + if (data[pos - lineSize] !== data[pos]) { + points[j0 + j] = data[pos] ? 2 : 4; + ++count; + } + + if (count > POINT_TO_PROCESS_LIMIT) { + return null; + } + } + + pos = lineSize * (height - 1); + j0 = i * width1; + if (data[pos] !== 0) { + points[j0] = 8; + ++count; + } + for (j = 1; j < width; j++) { + if (data[pos] !== data[pos + 1]) { + points[j0 + j] = data[pos] ? 4 : 8; + ++count; + } + pos++; + } + if (data[pos] !== 0) { + points[j0 + j] = 4; + ++count; + } + if (count > POINT_TO_PROCESS_LIMIT) { + return null; + } + + // building outlines + var steps = new Int32Array([0, width1, -1, 0, -width1, 0, 0, 0, 1]); + var outlines = []; + for (i = 0; count && i <= height; i++) { + var p = i * width1; + var end = p + width; + while (p < end && !points[p]) { + p++; + } + if (p === end) { + continue; + } + var coords = [p % width1, i]; + + var type = points[p], p0 = p, pp; + do { + var step = steps[type]; + do { + p += step; + } while (!points[p]); + + pp = points[p]; + if (pp !== 5 && pp !== 10) { + // set new direction + type = pp; + // delete mark + points[p] = 0; + } else { // type is 5 or 10, ie, a crossing + // set new direction + type = pp & ((0x33 * type) >> 4); + // set new type for "future hit" + points[p] &= (type >> 2 | type << 2); + } + + coords.push(p % width1); + coords.push((p / width1) | 0); + --count; + } while (p0 !== p); + outlines.push(coords); + --i; + } + + var drawOutline = function(c) { + c.save(); + // the path shall be painted in [0..1]x[0..1] space + c.scale(1 / width, -1 / height); + c.translate(0, -height); + c.beginPath(); + for (var i = 0, ii = outlines.length; i < ii; i++) { + var o = outlines[i]; + c.moveTo(o[0], o[1]); + for (var j = 2, jj = o.length; j < jj; j += 2) { + c.lineTo(o[j], o[j+1]); + } + } + c.fill(); + c.beginPath(); + c.restore(); + }; + + return drawOutline; +} + +var CanvasExtraState = (function CanvasExtraStateClosure() { + function CanvasExtraState(old) { + // Are soft masks and alpha values shapes or opacities? + this.alphaIsShape = false; + this.fontSize = 0; + this.fontSizeScale = 1; + this.textMatrix = IDENTITY_MATRIX; + this.textMatrixScale = 1; + this.fontMatrix = FONT_IDENTITY_MATRIX; + this.leading = 0; + // Current point (in user coordinates) + this.x = 0; + this.y = 0; + // Start of text line (in text coordinates) + this.lineX = 0; + this.lineY = 0; + // Character and word spacing + this.charSpacing = 0; + this.wordSpacing = 0; + this.textHScale = 1; + this.textRenderingMode = TextRenderingMode.FILL; + this.textRise = 0; + // Default fore and background colors + this.fillColor = '#000000'; + this.strokeColor = '#000000'; + this.patternFill = false; + // Note: fill alpha applies to all non-stroking operations + this.fillAlpha = 1; + this.strokeAlpha = 1; + this.lineWidth = 1; + this.activeSMask = null; // nonclonable field (see the save method below) + + this.old = old; + } + + CanvasExtraState.prototype = { + clone: function CanvasExtraState_clone() { + return Object.create(this); + }, + setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) { + this.x = x; + this.y = y; + } + }; + return CanvasExtraState; +})(); + +var CanvasGraphics = (function CanvasGraphicsClosure() { + // Defines the time the executeOperatorList is going to be executing + // before it stops and shedules a continue of execution. + var EXECUTION_TIME = 15; + // Defines the number of steps before checking the execution time + var EXECUTION_STEPS = 10; + + function CanvasGraphics(canvasCtx, commonObjs, objs, imageLayer) { + this.ctx = canvasCtx; + this.current = new CanvasExtraState(); + this.stateStack = []; + this.pendingClip = null; + this.pendingEOFill = false; + this.res = null; + this.xobjs = null; + this.commonObjs = commonObjs; + this.objs = objs; + this.imageLayer = imageLayer; + this.groupStack = []; + this.processingType3 = null; + // Patterns are painted relative to the initial page/form transform, see pdf + // spec 8.7.2 NOTE 1. + this.baseTransform = null; + this.baseTransformStack = []; + this.groupLevel = 0; + this.smaskStack = []; + this.smaskCounter = 0; + this.tempSMask = null; + if (canvasCtx) { + // NOTE: if mozCurrentTransform is polyfilled, then the current state of + // the transformation must already be set in canvasCtx._transformMatrix. + addContextCurrentTransform(canvasCtx); + } + this.cachedGetSinglePixelWidth = null; + } + + function putBinaryImageData(ctx, imgData) { + if (typeof ImageData !== 'undefined' && imgData instanceof ImageData) { + ctx.putImageData(imgData, 0, 0); + return; + } + + // Put the image data to the canvas in chunks, rather than putting the + // whole image at once. This saves JS memory, because the ImageData object + // is smaller. It also possibly saves C++ memory within the implementation + // of putImageData(). (E.g. in Firefox we make two short-lived copies of + // the data passed to putImageData()). |n| shouldn't be too small, however, + // because too many putImageData() calls will slow things down. + // + // Note: as written, if the last chunk is partial, the putImageData() call + // will (conceptually) put pixels past the bounds of the canvas. But + // that's ok; any such pixels are ignored. + + var height = imgData.height, width = imgData.width; + var partialChunkHeight = height % FULL_CHUNK_HEIGHT; + var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT; + var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1; + + var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT); + var srcPos = 0, destPos; + var src = imgData.data; + var dest = chunkImgData.data; + var i, j, thisChunkHeight, elemsInThisChunk; + + // There are multiple forms in which the pixel data can be passed, and + // imgData.kind tells us which one this is. + if (imgData.kind === ImageKind.GRAYSCALE_1BPP) { + // Grayscale, 1 bit per pixel (i.e. black-and-white). + var srcLength = src.byteLength; + var dest32 = PDFJS.hasCanvasTypedArrays ? new Uint32Array(dest.buffer) : + new Uint32ArrayView(dest); + var dest32DataLength = dest32.length; + var fullSrcDiff = (width + 7) >> 3; + var white = 0xFFFFFFFF; + var black = (PDFJS.isLittleEndian || !PDFJS.hasCanvasTypedArrays) ? + 0xFF000000 : 0x000000FF; + for (i = 0; i < totalChunks; i++) { + thisChunkHeight = + (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight; + destPos = 0; + for (j = 0; j < thisChunkHeight; j++) { + var srcDiff = srcLength - srcPos; + var k = 0; + var kEnd = (srcDiff > fullSrcDiff) ? width : srcDiff * 8 - 7; + var kEndUnrolled = kEnd & ~7; + var mask = 0; + var srcByte = 0; + for (; k < kEndUnrolled; k += 8) { + srcByte = src[srcPos++]; + dest32[destPos++] = (srcByte & 128) ? white : black; + dest32[destPos++] = (srcByte & 64) ? white : black; + dest32[destPos++] = (srcByte & 32) ? white : black; + dest32[destPos++] = (srcByte & 16) ? white : black; + dest32[destPos++] = (srcByte & 8) ? white : black; + dest32[destPos++] = (srcByte & 4) ? white : black; + dest32[destPos++] = (srcByte & 2) ? white : black; + dest32[destPos++] = (srcByte & 1) ? white : black; + } + for (; k < kEnd; k++) { + if (mask === 0) { + srcByte = src[srcPos++]; + mask = 128; + } + + dest32[destPos++] = (srcByte & mask) ? white : black; + mask >>= 1; + } + } + // We ran out of input. Make all remaining pixels transparent. + while (destPos < dest32DataLength) { + dest32[destPos++] = 0; + } + + ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT); + } + } else if (imgData.kind === ImageKind.RGBA_32BPP) { + // RGBA, 32-bits per pixel. + + j = 0; + elemsInThisChunk = width * FULL_CHUNK_HEIGHT * 4; + for (i = 0; i < fullChunks; i++) { + dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk)); + srcPos += elemsInThisChunk; + + ctx.putImageData(chunkImgData, 0, j); + j += FULL_CHUNK_HEIGHT; + } + if (i < totalChunks) { + elemsInThisChunk = width * partialChunkHeight * 4; + dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk)); + ctx.putImageData(chunkImgData, 0, j); + } + + } else if (imgData.kind === ImageKind.RGB_24BPP) { + // RGB, 24-bits per pixel. + thisChunkHeight = FULL_CHUNK_HEIGHT; + elemsInThisChunk = width * thisChunkHeight; + for (i = 0; i < totalChunks; i++) { + if (i >= fullChunks) { + thisChunkHeight = partialChunkHeight; + elemsInThisChunk = width * thisChunkHeight; + } + + destPos = 0; + for (j = elemsInThisChunk; j--;) { + dest[destPos++] = src[srcPos++]; + dest[destPos++] = src[srcPos++]; + dest[destPos++] = src[srcPos++]; + dest[destPos++] = 255; + } + ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT); + } + } else { + error('bad image kind: ' + imgData.kind); + } + } + + function putBinaryImageMask(ctx, imgData) { + var height = imgData.height, width = imgData.width; + var partialChunkHeight = height % FULL_CHUNK_HEIGHT; + var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT; + var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1; + + var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT); + var srcPos = 0; + var src = imgData.data; + var dest = chunkImgData.data; + + for (var i = 0; i < totalChunks; i++) { + var thisChunkHeight = + (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight; + + // Expand the mask so it can be used by the canvas. Any required + // inversion has already been handled. + var destPos = 3; // alpha component offset + for (var j = 0; j < thisChunkHeight; j++) { + var mask = 0; + for (var k = 0; k < width; k++) { + if (!mask) { + var elem = src[srcPos++]; + mask = 128; + } + dest[destPos] = (elem & mask) ? 0 : 255; + destPos += 4; + mask >>= 1; + } + } + ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT); + } + } + + function copyCtxState(sourceCtx, destCtx) { + var properties = ['strokeStyle', 'fillStyle', 'fillRule', 'globalAlpha', + 'lineWidth', 'lineCap', 'lineJoin', 'miterLimit', + 'globalCompositeOperation', 'font']; + for (var i = 0, ii = properties.length; i < ii; i++) { + var property = properties[i]; + if (sourceCtx[property] !== undefined) { + destCtx[property] = sourceCtx[property]; + } + } + if (sourceCtx.setLineDash !== undefined) { + destCtx.setLineDash(sourceCtx.getLineDash()); + destCtx.lineDashOffset = sourceCtx.lineDashOffset; + } else if (sourceCtx.mozDashOffset !== undefined) { + destCtx.mozDash = sourceCtx.mozDash; + destCtx.mozDashOffset = sourceCtx.mozDashOffset; + } + } + + function composeSMaskBackdrop(bytes, r0, g0, b0) { + var length = bytes.length; + for (var i = 3; i < length; i += 4) { + var alpha = bytes[i]; + if (alpha === 0) { + bytes[i - 3] = r0; + bytes[i - 2] = g0; + bytes[i - 1] = b0; + } else if (alpha < 255) { + var alpha_ = 255 - alpha; + bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) >> 8; + bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) >> 8; + bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) >> 8; + } + } + } + + function composeSMaskAlpha(maskData, layerData) { + var length = maskData.length; + var scale = 1 / 255; + for (var i = 3; i < length; i += 4) { + var alpha = maskData[i]; + layerData[i] = (layerData[i] * alpha * scale) | 0; + } + } + + function composeSMaskLuminosity(maskData, layerData) { + var length = maskData.length; + for (var i = 3; i < length; i += 4) { + var y = (maskData[i - 3] * 77) + // * 0.3 / 255 * 0x10000 + (maskData[i - 2] * 152) + // * 0.59 .... + (maskData[i - 1] * 28); // * 0.11 .... + layerData[i] = (layerData[i] * y) >> 16; + } + } + + function genericComposeSMask(maskCtx, layerCtx, width, height, + subtype, backdrop) { + var hasBackdrop = !!backdrop; + var r0 = hasBackdrop ? backdrop[0] : 0; + var g0 = hasBackdrop ? backdrop[1] : 0; + var b0 = hasBackdrop ? backdrop[2] : 0; + + var composeFn; + if (subtype === 'Luminosity') { + composeFn = composeSMaskLuminosity; + } else { + composeFn = composeSMaskAlpha; + } + + // processing image in chunks to save memory + var PIXELS_TO_PROCESS = 1048576; + var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width)); + for (var row = 0; row < height; row += chunkSize) { + var chunkHeight = Math.min(chunkSize, height - row); + var maskData = maskCtx.getImageData(0, row, width, chunkHeight); + var layerData = layerCtx.getImageData(0, row, width, chunkHeight); + + if (hasBackdrop) { + composeSMaskBackdrop(maskData.data, r0, g0, b0); + } + composeFn(maskData.data, layerData.data); + + maskCtx.putImageData(layerData, 0, row); + } + } + + function composeSMask(ctx, smask, layerCtx) { + var mask = smask.canvas; + var maskCtx = smask.context; + + ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY, + smask.offsetX, smask.offsetY); + + var backdrop = smask.backdrop || null; + if (WebGLUtils.isEnabled) { + var composed = WebGLUtils.composeSMask(layerCtx.canvas, mask, + {subtype: smask.subtype, backdrop: backdrop}); + ctx.setTransform(1, 0, 0, 1, 0, 0); + ctx.drawImage(composed, smask.offsetX, smask.offsetY); + return; + } + genericComposeSMask(maskCtx, layerCtx, mask.width, mask.height, + smask.subtype, backdrop); + ctx.drawImage(mask, 0, 0); + } + + var LINE_CAP_STYLES = ['butt', 'round', 'square']; + var LINE_JOIN_STYLES = ['miter', 'round', 'bevel']; + var NORMAL_CLIP = {}; + var EO_CLIP = {}; + + CanvasGraphics.prototype = { + + beginDrawing: function CanvasGraphics_beginDrawing(viewport, transparency) { + // For pdfs that use blend modes we have to clear the canvas else certain + // blend modes can look wrong since we'd be blending with a white + // backdrop. The problem with a transparent backdrop though is we then + // don't get sub pixel anti aliasing on text, so we fill with white if + // we can. + var width = this.ctx.canvas.width; + var height = this.ctx.canvas.height; + if (transparency) { + this.ctx.clearRect(0, 0, width, height); + } else { + this.ctx.mozOpaque = true; + this.ctx.save(); + this.ctx.fillStyle = 'rgb(255, 255, 255)'; + this.ctx.fillRect(0, 0, width, height); + this.ctx.restore(); + } + + var transform = viewport.transform; + + this.ctx.save(); + this.ctx.transform.apply(this.ctx, transform); + + this.baseTransform = this.ctx.mozCurrentTransform.slice(); + + if (this.imageLayer) { + this.imageLayer.beginLayout(); + } + }, + + executeOperatorList: function CanvasGraphics_executeOperatorList( + operatorList, + executionStartIdx, continueCallback, + stepper) { + var argsArray = operatorList.argsArray; + var fnArray = operatorList.fnArray; + var i = executionStartIdx || 0; + var argsArrayLen = argsArray.length; + + // Sometimes the OperatorList to execute is empty. + if (argsArrayLen === i) { + return i; + } + + var chunkOperations = (argsArrayLen - i > EXECUTION_STEPS && + typeof continueCallback === 'function'); + var endTime = chunkOperations ? Date.now() + EXECUTION_TIME : 0; + var steps = 0; + + var commonObjs = this.commonObjs; + var objs = this.objs; + var fnId; + + while (true) { + if (stepper !== undefined && i === stepper.nextBreakPoint) { + stepper.breakIt(i, continueCallback); + return i; + } + + fnId = fnArray[i]; + + if (fnId !== OPS.dependency) { + this[fnId].apply(this, argsArray[i]); + } else { + var deps = argsArray[i]; + for (var n = 0, nn = deps.length; n < nn; n++) { + var depObjId = deps[n]; + var common = depObjId[0] === 'g' && depObjId[1] === '_'; + var objsPool = common ? commonObjs : objs; + + // If the promise isn't resolved yet, add the continueCallback + // to the promise and bail out. + if (!objsPool.isResolved(depObjId)) { + objsPool.get(depObjId, continueCallback); + return i; + } + } + } + + i++; + + // If the entire operatorList was executed, stop as were done. + if (i === argsArrayLen) { + return i; + } + + // If the execution took longer then a certain amount of time and + // `continueCallback` is specified, interrupt the execution. + if (chunkOperations && ++steps > EXECUTION_STEPS) { + if (Date.now() > endTime) { + continueCallback(); + return i; + } + steps = 0; + } + + // If the operatorList isn't executed completely yet OR the execution + // time was short enough, do another execution round. + } + }, + + endDrawing: function CanvasGraphics_endDrawing() { + this.ctx.restore(); + CachedCanvases.clear(); + WebGLUtils.clear(); + + if (this.imageLayer) { + this.imageLayer.endLayout(); + } + }, + + // Graphics state + setLineWidth: function CanvasGraphics_setLineWidth(width) { + this.current.lineWidth = width; + this.ctx.lineWidth = width; + }, + setLineCap: function CanvasGraphics_setLineCap(style) { + this.ctx.lineCap = LINE_CAP_STYLES[style]; + }, + setLineJoin: function CanvasGraphics_setLineJoin(style) { + this.ctx.lineJoin = LINE_JOIN_STYLES[style]; + }, + setMiterLimit: function CanvasGraphics_setMiterLimit(limit) { + this.ctx.miterLimit = limit; + }, + setDash: function CanvasGraphics_setDash(dashArray, dashPhase) { + var ctx = this.ctx; + if (ctx.setLineDash !== undefined) { + ctx.setLineDash(dashArray); + ctx.lineDashOffset = dashPhase; + } else { + ctx.mozDash = dashArray; + ctx.mozDashOffset = dashPhase; + } + }, + setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) { + // Maybe if we one day fully support color spaces this will be important + // for now we can ignore. + // TODO set rendering intent? + }, + setFlatness: function CanvasGraphics_setFlatness(flatness) { + // There's no way to control this with canvas, but we can safely ignore. + // TODO set flatness? + }, + setGState: function CanvasGraphics_setGState(states) { + for (var i = 0, ii = states.length; i < ii; i++) { + var state = states[i]; + var key = state[0]; + var value = state[1]; + + switch (key) { + case 'LW': + this.setLineWidth(value); + break; + case 'LC': + this.setLineCap(value); + break; + case 'LJ': + this.setLineJoin(value); + break; + case 'ML': + this.setMiterLimit(value); + break; + case 'D': + this.setDash(value[0], value[1]); + break; + case 'RI': + this.setRenderingIntent(value); + break; + case 'FL': + this.setFlatness(value); + break; + case 'Font': + this.setFont(value[0], value[1]); + break; + case 'CA': + this.current.strokeAlpha = state[1]; + break; + case 'ca': + this.current.fillAlpha = state[1]; + this.ctx.globalAlpha = state[1]; + break; + case 'BM': + if (value && value.name && (value.name !== 'Normal')) { + var mode = value.name.replace(/([A-Z])/g, + function(c) { + return '-' + c.toLowerCase(); + } + ).substring(1); + this.ctx.globalCompositeOperation = mode; + if (this.ctx.globalCompositeOperation !== mode) { + warn('globalCompositeOperation "' + mode + + '" is not supported'); + } + } else { + this.ctx.globalCompositeOperation = 'source-over'; + } + break; + case 'SMask': + if (this.current.activeSMask) { + this.endSMaskGroup(); + } + this.current.activeSMask = value ? this.tempSMask : null; + if (this.current.activeSMask) { + this.beginSMaskGroup(); + } + this.tempSMask = null; + break; + } + } + }, + beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() { + + var activeSMask = this.current.activeSMask; + var drawnWidth = activeSMask.canvas.width; + var drawnHeight = activeSMask.canvas.height; + var cacheId = 'smaskGroupAt' + this.groupLevel; + var scratchCanvas = CachedCanvases.getCanvas( + cacheId, drawnWidth, drawnHeight, true); + + var currentCtx = this.ctx; + var currentTransform = currentCtx.mozCurrentTransform; + this.ctx.save(); + + var groupCtx = scratchCanvas.context; + groupCtx.scale(1 / activeSMask.scaleX, 1 / activeSMask.scaleY); + groupCtx.translate(-activeSMask.offsetX, -activeSMask.offsetY); + groupCtx.transform.apply(groupCtx, currentTransform); + + copyCtxState(currentCtx, groupCtx); + this.ctx = groupCtx; + this.setGState([ + ['BM', 'Normal'], + ['ca', 1], + ['CA', 1] + ]); + this.groupStack.push(currentCtx); + this.groupLevel++; + }, + endSMaskGroup: function CanvasGraphics_endSMaskGroup() { + var groupCtx = this.ctx; + this.groupLevel--; + this.ctx = this.groupStack.pop(); + + composeSMask(this.ctx, this.current.activeSMask, groupCtx); + this.ctx.restore(); + }, + save: function CanvasGraphics_save() { + this.ctx.save(); + var old = this.current; + this.stateStack.push(old); + this.current = old.clone(); + this.current.activeSMask = null; + }, + restore: function CanvasGraphics_restore() { + if (this.stateStack.length !== 0) { + if (this.current.activeSMask !== null) { + this.endSMaskGroup(); + } + + this.current = this.stateStack.pop(); + this.ctx.restore(); + + this.cachedGetSinglePixelWidth = null; + } + }, + transform: function CanvasGraphics_transform(a, b, c, d, e, f) { + this.ctx.transform(a, b, c, d, e, f); + + this.cachedGetSinglePixelWidth = null; + }, + + // Path + constructPath: function CanvasGraphics_constructPath(ops, args) { + var ctx = this.ctx; + var current = this.current; + var x = current.x, y = current.y; + for (var i = 0, j = 0, ii = ops.length; i < ii; i++) { + switch (ops[i] | 0) { + case OPS.rectangle: + x = args[j++]; + y = args[j++]; + var width = args[j++]; + var height = args[j++]; + if (width === 0) { + width = this.getSinglePixelWidth(); + } + if (height === 0) { + height = this.getSinglePixelWidth(); + } + var xw = x + width; + var yh = y + height; + this.ctx.moveTo(x, y); + this.ctx.lineTo(xw, y); + this.ctx.lineTo(xw, yh); + this.ctx.lineTo(x, yh); + this.ctx.lineTo(x, y); + this.ctx.closePath(); + break; + case OPS.moveTo: + x = args[j++]; + y = args[j++]; + ctx.moveTo(x, y); + break; + case OPS.lineTo: + x = args[j++]; + y = args[j++]; + ctx.lineTo(x, y); + break; + case OPS.curveTo: + x = args[j + 4]; + y = args[j + 5]; + ctx.bezierCurveTo(args[j], args[j + 1], args[j + 2], args[j + 3], + x, y); + j += 6; + break; + case OPS.curveTo2: + ctx.bezierCurveTo(x, y, args[j], args[j + 1], + args[j + 2], args[j + 3]); + x = args[j + 2]; + y = args[j + 3]; + j += 4; + break; + case OPS.curveTo3: + x = args[j + 2]; + y = args[j + 3]; + ctx.bezierCurveTo(args[j], args[j + 1], x, y, x, y); + j += 4; + break; + case OPS.closePath: + ctx.closePath(); + break; + } + } + current.setCurrentPoint(x, y); + }, + closePath: function CanvasGraphics_closePath() { + this.ctx.closePath(); + }, + stroke: function CanvasGraphics_stroke(consumePath) { + consumePath = typeof consumePath !== 'undefined' ? consumePath : true; + var ctx = this.ctx; + var strokeColor = this.current.strokeColor; + // Prevent drawing too thin lines by enforcing a minimum line width. + ctx.lineWidth = Math.max(this.getSinglePixelWidth() * MIN_WIDTH_FACTOR, + this.current.lineWidth); + // For stroke we want to temporarily change the global alpha to the + // stroking alpha. + ctx.globalAlpha = this.current.strokeAlpha; + if (strokeColor && strokeColor.hasOwnProperty('type') && + strokeColor.type === 'Pattern') { + // for patterns, we transform to pattern space, calculate + // the pattern, call stroke, and restore to user space + ctx.save(); + ctx.strokeStyle = strokeColor.getPattern(ctx, this); + ctx.stroke(); + ctx.restore(); + } else { + ctx.stroke(); + } + if (consumePath) { + this.consumePath(); + } + // Restore the global alpha to the fill alpha + ctx.globalAlpha = this.current.fillAlpha; + }, + closeStroke: function CanvasGraphics_closeStroke() { + this.closePath(); + this.stroke(); + }, + fill: function CanvasGraphics_fill(consumePath) { + consumePath = typeof consumePath !== 'undefined' ? consumePath : true; + var ctx = this.ctx; + var fillColor = this.current.fillColor; + var isPatternFill = this.current.patternFill; + var needRestore = false; + + if (isPatternFill) { + ctx.save(); + ctx.fillStyle = fillColor.getPattern(ctx, this); + needRestore = true; + } + + if (this.pendingEOFill) { + if (ctx.mozFillRule !== undefined) { + ctx.mozFillRule = 'evenodd'; + ctx.fill(); + ctx.mozFillRule = 'nonzero'; + } else { + try { + ctx.fill('evenodd'); + } catch (ex) { + // shouldn't really happen, but browsers might think differently + ctx.fill(); + } + } + this.pendingEOFill = false; + } else { + ctx.fill(); + } + + if (needRestore) { + ctx.restore(); + } + if (consumePath) { + this.consumePath(); + } + }, + eoFill: function CanvasGraphics_eoFill() { + this.pendingEOFill = true; + this.fill(); + }, + fillStroke: function CanvasGraphics_fillStroke() { + this.fill(false); + this.stroke(false); + + this.consumePath(); + }, + eoFillStroke: function CanvasGraphics_eoFillStroke() { + this.pendingEOFill = true; + this.fillStroke(); + }, + closeFillStroke: function CanvasGraphics_closeFillStroke() { + this.closePath(); + this.fillStroke(); + }, + closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() { + this.pendingEOFill = true; + this.closePath(); + this.fillStroke(); + }, + endPath: function CanvasGraphics_endPath() { + this.consumePath(); + }, + + // Clipping + clip: function CanvasGraphics_clip() { + this.pendingClip = NORMAL_CLIP; + }, + eoClip: function CanvasGraphics_eoClip() { + this.pendingClip = EO_CLIP; + }, + + // Text + beginText: function CanvasGraphics_beginText() { + this.current.textMatrix = IDENTITY_MATRIX; + this.current.textMatrixScale = 1; + this.current.x = this.current.lineX = 0; + this.current.y = this.current.lineY = 0; + }, + endText: function CanvasGraphics_endText() { + var paths = this.pendingTextPaths; + var ctx = this.ctx; + if (paths === undefined) { + ctx.beginPath(); + return; + } + + ctx.save(); + ctx.beginPath(); + for (var i = 0; i < paths.length; i++) { + var path = paths[i]; + ctx.setTransform.apply(ctx, path.transform); + ctx.translate(path.x, path.y); + path.addToPath(ctx, path.fontSize); + } + ctx.restore(); + ctx.clip(); + ctx.beginPath(); + delete this.pendingTextPaths; + }, + setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) { + this.current.charSpacing = spacing; + }, + setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) { + this.current.wordSpacing = spacing; + }, + setHScale: function CanvasGraphics_setHScale(scale) { + this.current.textHScale = scale / 100; + }, + setLeading: function CanvasGraphics_setLeading(leading) { + this.current.leading = -leading; + }, + setFont: function CanvasGraphics_setFont(fontRefName, size) { + var fontObj = this.commonObjs.get(fontRefName); + var current = this.current; + + if (!fontObj) { + error('Can\'t find font for ' + fontRefName); + } + + current.fontMatrix = (fontObj.fontMatrix ? + fontObj.fontMatrix : FONT_IDENTITY_MATRIX); + + // A valid matrix needs all main diagonal elements to be non-zero + // This also ensures we bypass FF bugzilla bug #719844. + if (current.fontMatrix[0] === 0 || + current.fontMatrix[3] === 0) { + warn('Invalid font matrix for font ' + fontRefName); + } + + // The spec for Tf (setFont) says that 'size' specifies the font 'scale', + // and in some docs this can be negative (inverted x-y axes). + if (size < 0) { + size = -size; + current.fontDirection = -1; + } else { + current.fontDirection = 1; + } + + this.current.font = fontObj; + this.current.fontSize = size; + + if (fontObj.isType3Font) { + return; // we don't need ctx.font for Type3 fonts + } + + var name = fontObj.loadedName || 'sans-serif'; + var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') : + (fontObj.bold ? 'bold' : 'normal'); + + var italic = fontObj.italic ? 'italic' : 'normal'; + var typeface = '"' + name + '", ' + fontObj.fallbackName; + + // Some font backends cannot handle fonts below certain size. + // Keeping the font at minimal size and using the fontSizeScale to change + // the current transformation matrix before the fillText/strokeText. + // See https://bugzilla.mozilla.org/show_bug.cgi?id=726227 + var browserFontSize = size < MIN_FONT_SIZE ? MIN_FONT_SIZE : + size > MAX_FONT_SIZE ? MAX_FONT_SIZE : size; + this.current.fontSizeScale = size / browserFontSize; + + var rule = italic + ' ' + bold + ' ' + browserFontSize + 'px ' + typeface; + this.ctx.font = rule; + }, + setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) { + this.current.textRenderingMode = mode; + }, + setTextRise: function CanvasGraphics_setTextRise(rise) { + this.current.textRise = rise; + }, + moveText: function CanvasGraphics_moveText(x, y) { + this.current.x = this.current.lineX += x; + this.current.y = this.current.lineY += y; + }, + setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) { + this.setLeading(-y); + this.moveText(x, y); + }, + setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) { + this.current.textMatrix = [a, b, c, d, e, f]; + this.current.textMatrixScale = Math.sqrt(a * a + b * b); + + this.current.x = this.current.lineX = 0; + this.current.y = this.current.lineY = 0; + }, + nextLine: function CanvasGraphics_nextLine() { + this.moveText(0, this.current.leading); + }, + + paintChar: function CanvasGraphics_paintChar(character, x, y) { + var ctx = this.ctx; + var current = this.current; + var font = current.font; + var textRenderingMode = current.textRenderingMode; + var fontSize = current.fontSize / current.fontSizeScale; + var fillStrokeMode = textRenderingMode & + TextRenderingMode.FILL_STROKE_MASK; + var isAddToPathSet = !!(textRenderingMode & + TextRenderingMode.ADD_TO_PATH_FLAG); + + var addToPath; + if (font.disableFontFace || isAddToPathSet) { + addToPath = font.getPathGenerator(this.commonObjs, character); + } + + if (font.disableFontFace) { + ctx.save(); + ctx.translate(x, y); + ctx.beginPath(); + addToPath(ctx, fontSize); + if (fillStrokeMode === TextRenderingMode.FILL || + fillStrokeMode === TextRenderingMode.FILL_STROKE) { + ctx.fill(); + } + if (fillStrokeMode === TextRenderingMode.STROKE || + fillStrokeMode === TextRenderingMode.FILL_STROKE) { + ctx.stroke(); + } + ctx.restore(); + } else { + if (fillStrokeMode === TextRenderingMode.FILL || + fillStrokeMode === TextRenderingMode.FILL_STROKE) { + ctx.fillText(character, x, y); + } + if (fillStrokeMode === TextRenderingMode.STROKE || + fillStrokeMode === TextRenderingMode.FILL_STROKE) { + ctx.strokeText(character, x, y); + } + } + + if (isAddToPathSet) { + var paths = this.pendingTextPaths || (this.pendingTextPaths = []); + paths.push({ + transform: ctx.mozCurrentTransform, + x: x, + y: y, + fontSize: fontSize, + addToPath: addToPath + }); + } + }, + + get isFontSubpixelAAEnabled() { + // Checks if anti-aliasing is enabled when scaled text is painted. + // On Windows GDI scaled fonts looks bad. + var ctx = document.createElement('canvas').getContext('2d'); + ctx.scale(1.5, 1); + ctx.fillText('I', 0, 10); + var data = ctx.getImageData(0, 0, 10, 10).data; + var enabled = false; + for (var i = 3; i < data.length; i += 4) { + if (data[i] > 0 && data[i] < 255) { + enabled = true; + break; + } + } + return shadow(this, 'isFontSubpixelAAEnabled', enabled); + }, + + showText: function CanvasGraphics_showText(glyphs) { + var current = this.current; + var font = current.font; + if (font.isType3Font) { + return this.showType3Text(glyphs); + } + + var fontSize = current.fontSize; + if (fontSize === 0) { + return; + } + + var ctx = this.ctx; + var fontSizeScale = current.fontSizeScale; + var charSpacing = current.charSpacing; + var wordSpacing = current.wordSpacing; + var fontDirection = current.fontDirection; + var textHScale = current.textHScale * fontDirection; + var glyphsLength = glyphs.length; + var vertical = font.vertical; + var defaultVMetrics = font.defaultVMetrics; + var widthAdvanceScale = fontSize * current.fontMatrix[0]; + + var simpleFillText = + current.textRenderingMode === TextRenderingMode.FILL && + !font.disableFontFace; + + ctx.save(); + ctx.transform.apply(ctx, current.textMatrix); + ctx.translate(current.x, current.y + current.textRise); + + if (fontDirection > 0) { + ctx.scale(textHScale, -1); + } else { + ctx.scale(textHScale, 1); + } + + var lineWidth = current.lineWidth; + var scale = current.textMatrixScale; + if (scale === 0 || lineWidth === 0) { + var fillStrokeMode = current.textRenderingMode & + TextRenderingMode.FILL_STROKE_MASK; + if (fillStrokeMode === TextRenderingMode.STROKE || + fillStrokeMode === TextRenderingMode.FILL_STROKE) { + this.cachedGetSinglePixelWidth = null; + lineWidth = this.getSinglePixelWidth() * MIN_WIDTH_FACTOR; + } + } else { + lineWidth /= scale; + } + + if (fontSizeScale !== 1.0) { + ctx.scale(fontSizeScale, fontSizeScale); + lineWidth /= fontSizeScale; + } + + ctx.lineWidth = lineWidth; + + var x = 0, i; + for (i = 0; i < glyphsLength; ++i) { + var glyph = glyphs[i]; + if (glyph === null) { + // word break + x += fontDirection * wordSpacing; + continue; + } else if (isNum(glyph)) { + x += -glyph * fontSize * 0.001; + continue; + } + + var restoreNeeded = false; + var character = glyph.fontChar; + var accent = glyph.accent; + var scaledX, scaledY, scaledAccentX, scaledAccentY; + var width = glyph.width; + if (vertical) { + var vmetric, vx, vy; + vmetric = glyph.vmetric || defaultVMetrics; + vx = glyph.vmetric ? vmetric[1] : width * 0.5; + vx = -vx * widthAdvanceScale; + vy = vmetric[2] * widthAdvanceScale; + + width = vmetric ? -vmetric[0] : width; + scaledX = vx / fontSizeScale; + scaledY = (x + vy) / fontSizeScale; + } else { + scaledX = x / fontSizeScale; + scaledY = 0; + } + + if (font.remeasure && width > 0 && this.isFontSubpixelAAEnabled) { + // some standard fonts may not have the exact width, trying to + // rescale per character + var measuredWidth = ctx.measureText(character).width * 1000 / + fontSize * fontSizeScale; + var characterScaleX = width / measuredWidth; + restoreNeeded = true; + ctx.save(); + ctx.scale(characterScaleX, 1); + scaledX /= characterScaleX; + } + + if (simpleFillText && !accent) { + // common case + ctx.fillText(character, scaledX, scaledY); + } else { + this.paintChar(character, scaledX, scaledY); + if (accent) { + scaledAccentX = scaledX + accent.offset.x / fontSizeScale; + scaledAccentY = scaledY - accent.offset.y / fontSizeScale; + this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY); + } + } + + var charWidth = width * widthAdvanceScale + charSpacing * fontDirection; + x += charWidth; + + if (restoreNeeded) { + ctx.restore(); + } + } + if (vertical) { + current.y -= x * textHScale; + } else { + current.x += x * textHScale; + } + ctx.restore(); + }, + + showType3Text: function CanvasGraphics_showType3Text(glyphs) { + // Type3 fonts - each glyph is a "mini-PDF" + var ctx = this.ctx; + var current = this.current; + var font = current.font; + var fontSize = current.fontSize; + var fontDirection = current.fontDirection; + var charSpacing = current.charSpacing; + var wordSpacing = current.wordSpacing; + var textHScale = current.textHScale * fontDirection; + var fontMatrix = current.fontMatrix || FONT_IDENTITY_MATRIX; + var glyphsLength = glyphs.length; + var isTextInvisible = + current.textRenderingMode === TextRenderingMode.INVISIBLE; + var i, glyph, width; + + if (isTextInvisible || fontSize === 0) { + return; + } + + ctx.save(); + ctx.transform.apply(ctx, current.textMatrix); + ctx.translate(current.x, current.y); + + ctx.scale(textHScale, fontDirection); + + for (i = 0; i < glyphsLength; ++i) { + glyph = glyphs[i]; + if (glyph === null) { + // word break + this.ctx.translate(wordSpacing, 0); + current.x += wordSpacing * textHScale; + continue; + } else if (isNum(glyph)) { + var spacingLength = -glyph * 0.001 * fontSize; + this.ctx.translate(spacingLength, 0); + current.x += spacingLength * textHScale; + continue; + } + + var operatorList = font.charProcOperatorList[glyph.operatorListId]; + if (!operatorList) { + warn('Type3 character \"' + glyph.operatorListId + + '\" is not available'); + continue; + } + this.processingType3 = glyph; + this.save(); + ctx.scale(fontSize, fontSize); + ctx.transform.apply(ctx, fontMatrix); + this.executeOperatorList(operatorList); + this.restore(); + + var transformed = Util.applyTransform([glyph.width, 0], fontMatrix); + width = transformed[0] * fontSize + charSpacing; + + ctx.translate(width, 0); + current.x += width * textHScale; + } + ctx.restore(); + this.processingType3 = null; + }, + + // Type3 fonts + setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) { + // We can safely ignore this since the width should be the same + // as the width in the Widths array. + }, + setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(xWidth, + yWidth, + llx, + lly, + urx, + ury) { + // TODO According to the spec we're also suppose to ignore any operators + // that set color or include images while processing this type3 font. + this.ctx.rect(llx, lly, urx - llx, ury - lly); + this.clip(); + this.endPath(); + }, + + // Color + getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) { + var pattern; + if (IR[0] === 'TilingPattern') { + var color = IR[1]; + pattern = new TilingPattern(IR, color, this.ctx, this.objs, + this.commonObjs, this.baseTransform); + } else { + pattern = getShadingPatternFromIR(IR); + } + return pattern; + }, + setStrokeColorN: function CanvasGraphics_setStrokeColorN(/*...*/) { + this.current.strokeColor = this.getColorN_Pattern(arguments); + }, + setFillColorN: function CanvasGraphics_setFillColorN(/*...*/) { + this.current.fillColor = this.getColorN_Pattern(arguments); + this.current.patternFill = true; + }, + setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) { + var color = Util.makeCssRgb(r, g, b); + this.ctx.strokeStyle = color; + this.current.strokeColor = color; + }, + setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) { + var color = Util.makeCssRgb(r, g, b); + this.ctx.fillStyle = color; + this.current.fillColor = color; + this.current.patternFill = false; + }, + + shadingFill: function CanvasGraphics_shadingFill(patternIR) { + var ctx = this.ctx; + + this.save(); + var pattern = getShadingPatternFromIR(patternIR); + ctx.fillStyle = pattern.getPattern(ctx, this, true); + + var inv = ctx.mozCurrentTransformInverse; + if (inv) { + var canvas = ctx.canvas; + var width = canvas.width; + var height = canvas.height; + + var bl = Util.applyTransform([0, 0], inv); + var br = Util.applyTransform([0, height], inv); + var ul = Util.applyTransform([width, 0], inv); + var ur = Util.applyTransform([width, height], inv); + + var x0 = Math.min(bl[0], br[0], ul[0], ur[0]); + var y0 = Math.min(bl[1], br[1], ul[1], ur[1]); + var x1 = Math.max(bl[0], br[0], ul[0], ur[0]); + var y1 = Math.max(bl[1], br[1], ul[1], ur[1]); + + this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0); + } else { + // HACK to draw the gradient onto an infinite rectangle. + // PDF gradients are drawn across the entire image while + // Canvas only allows gradients to be drawn in a rectangle + // The following bug should allow us to remove this. + // https://bugzilla.mozilla.org/show_bug.cgi?id=664884 + + this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10); + } + + this.restore(); + }, + + // Images + beginInlineImage: function CanvasGraphics_beginInlineImage() { + error('Should not call beginInlineImage'); + }, + beginImageData: function CanvasGraphics_beginImageData() { + error('Should not call beginImageData'); + }, + + paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(matrix, + bbox) { + this.save(); + this.baseTransformStack.push(this.baseTransform); + + if (isArray(matrix) && 6 === matrix.length) { + this.transform.apply(this, matrix); + } + + this.baseTransform = this.ctx.mozCurrentTransform; + + if (isArray(bbox) && 4 === bbox.length) { + var width = bbox[2] - bbox[0]; + var height = bbox[3] - bbox[1]; + this.ctx.rect(bbox[0], bbox[1], width, height); + this.clip(); + this.endPath(); + } + }, + + paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() { + this.restore(); + this.baseTransform = this.baseTransformStack.pop(); + }, + + beginGroup: function CanvasGraphics_beginGroup(group) { + this.save(); + var currentCtx = this.ctx; + // TODO non-isolated groups - according to Rik at adobe non-isolated + // group results aren't usually that different and they even have tools + // that ignore this setting. Notes from Rik on implmenting: + // - When you encounter an transparency group, create a new canvas with + // the dimensions of the bbox + // - copy the content from the previous canvas to the new canvas + // - draw as usual + // - remove the backdrop alpha: + // alphaNew = 1 - (1 - alpha)/(1 - alphaBackdrop) with 'alpha' the alpha + // value of your transparency group and 'alphaBackdrop' the alpha of the + // backdrop + // - remove background color: + // colorNew = color - alphaNew *colorBackdrop /(1 - alphaNew) + if (!group.isolated) { + info('TODO: Support non-isolated groups.'); + } + + // TODO knockout - supposedly possible with the clever use of compositing + // modes. + if (group.knockout) { + warn('Knockout groups not supported.'); + } + + var currentTransform = currentCtx.mozCurrentTransform; + if (group.matrix) { + currentCtx.transform.apply(currentCtx, group.matrix); + } + assert(group.bbox, 'Bounding box is required.'); + + // Based on the current transform figure out how big the bounding box + // will actually be. + var bounds = Util.getAxialAlignedBoundingBox( + group.bbox, + currentCtx.mozCurrentTransform); + // Clip the bounding box to the current canvas. + var canvasBounds = [0, + 0, + currentCtx.canvas.width, + currentCtx.canvas.height]; + bounds = Util.intersect(bounds, canvasBounds) || [0, 0, 0, 0]; + // Use ceil in case we're between sizes so we don't create canvas that is + // too small and make the canvas at least 1x1 pixels. + var offsetX = Math.floor(bounds[0]); + var offsetY = Math.floor(bounds[1]); + var drawnWidth = Math.max(Math.ceil(bounds[2]) - offsetX, 1); + var drawnHeight = Math.max(Math.ceil(bounds[3]) - offsetY, 1); + var scaleX = 1, scaleY = 1; + if (drawnWidth > MAX_GROUP_SIZE) { + scaleX = drawnWidth / MAX_GROUP_SIZE; + drawnWidth = MAX_GROUP_SIZE; + } + if (drawnHeight > MAX_GROUP_SIZE) { + scaleY = drawnHeight / MAX_GROUP_SIZE; + drawnHeight = MAX_GROUP_SIZE; + } + + var cacheId = 'groupAt' + this.groupLevel; + if (group.smask) { + // Using two cache entries is case if masks are used one after another. + cacheId += '_smask_' + ((this.smaskCounter++) % 2); + } + var scratchCanvas = CachedCanvases.getCanvas( + cacheId, drawnWidth, drawnHeight, true); + var groupCtx = scratchCanvas.context; + + // Since we created a new canvas that is just the size of the bounding box + // we have to translate the group ctx. + groupCtx.scale(1 / scaleX, 1 / scaleY); + groupCtx.translate(-offsetX, -offsetY); + groupCtx.transform.apply(groupCtx, currentTransform); + + if (group.smask) { + // Saving state and cached mask to be used in setGState. + this.smaskStack.push({ + canvas: scratchCanvas.canvas, + context: groupCtx, + offsetX: offsetX, + offsetY: offsetY, + scaleX: scaleX, + scaleY: scaleY, + subtype: group.smask.subtype, + backdrop: group.smask.backdrop + }); + } else { + // Setup the current ctx so when the group is popped we draw it at the + // right location. + currentCtx.setTransform(1, 0, 0, 1, 0, 0); + currentCtx.translate(offsetX, offsetY); + currentCtx.scale(scaleX, scaleY); + } + // The transparency group inherits all off the current graphics state + // except the blend mode, soft mask, and alpha constants. + copyCtxState(currentCtx, groupCtx); + this.ctx = groupCtx; + this.setGState([ + ['BM', 'Normal'], + ['ca', 1], + ['CA', 1] + ]); + this.groupStack.push(currentCtx); + this.groupLevel++; + }, + + endGroup: function CanvasGraphics_endGroup(group) { + this.groupLevel--; + var groupCtx = this.ctx; + this.ctx = this.groupStack.pop(); + // Turn off image smoothing to avoid sub pixel interpolation which can + // look kind of blurry for some pdfs. + if (this.ctx.imageSmoothingEnabled !== undefined) { + this.ctx.imageSmoothingEnabled = false; + } else { + this.ctx.mozImageSmoothingEnabled = false; + } + if (group.smask) { + this.tempSMask = this.smaskStack.pop(); + } else { + this.ctx.drawImage(groupCtx.canvas, 0, 0); + } + this.restore(); + }, + + beginAnnotations: function CanvasGraphics_beginAnnotations() { + this.save(); + this.current = new CanvasExtraState(); + }, + + endAnnotations: function CanvasGraphics_endAnnotations() { + this.restore(); + }, + + beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform, + matrix) { + this.save(); + + if (isArray(rect) && 4 === rect.length) { + var width = rect[2] - rect[0]; + var height = rect[3] - rect[1]; + this.ctx.rect(rect[0], rect[1], width, height); + this.clip(); + this.endPath(); + } + + this.transform.apply(this, transform); + this.transform.apply(this, matrix); + }, + + endAnnotation: function CanvasGraphics_endAnnotation() { + this.restore(); + }, + + paintJpegXObject: function CanvasGraphics_paintJpegXObject(objId, w, h) { + var domImage = this.objs.get(objId); + if (!domImage) { + warn('Dependent image isn\'t ready yet'); + return; + } + + this.save(); + + var ctx = this.ctx; + // scale the image to the unit square + ctx.scale(1 / w, -1 / h); + + ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height, + 0, -h, w, h); + if (this.imageLayer) { + var currentTransform = ctx.mozCurrentTransformInverse; + var position = this.getCanvasPosition(0, 0); + this.imageLayer.appendImage({ + objId: objId, + left: position[0], + top: position[1], + width: w / currentTransform[0], + height: h / currentTransform[3] + }); + } + this.restore(); + }, + + paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) { + var ctx = this.ctx; + var width = img.width, height = img.height; + var fillColor = this.current.fillColor; + var isPatternFill = this.current.patternFill; + + var glyph = this.processingType3; + + if (COMPILE_TYPE3_GLYPHS && glyph && glyph.compiled === undefined) { + if (width <= MAX_SIZE_TO_COMPILE && height <= MAX_SIZE_TO_COMPILE) { + glyph.compiled = + compileType3Glyph({data: img.data, width: width, height: height}); + } else { + glyph.compiled = null; + } + } + + if (glyph && glyph.compiled) { + glyph.compiled(ctx); + return; + } + + var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height); + var maskCtx = maskCanvas.context; + maskCtx.save(); + + putBinaryImageMask(maskCtx, img); + + maskCtx.globalCompositeOperation = 'source-in'; + + maskCtx.fillStyle = isPatternFill ? + fillColor.getPattern(maskCtx, this) : fillColor; + maskCtx.fillRect(0, 0, width, height); + + maskCtx.restore(); + + this.paintInlineImageXObject(maskCanvas.canvas); + }, + + paintImageMaskXObjectRepeat: + function CanvasGraphics_paintImageMaskXObjectRepeat(imgData, scaleX, + scaleY, positions) { + var width = imgData.width; + var height = imgData.height; + var fillColor = this.current.fillColor; + var isPatternFill = this.current.patternFill; + + var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height); + var maskCtx = maskCanvas.context; + maskCtx.save(); + + putBinaryImageMask(maskCtx, imgData); + + maskCtx.globalCompositeOperation = 'source-in'; + + maskCtx.fillStyle = isPatternFill ? + fillColor.getPattern(maskCtx, this) : fillColor; + maskCtx.fillRect(0, 0, width, height); + + maskCtx.restore(); + + var ctx = this.ctx; + for (var i = 0, ii = positions.length; i < ii; i += 2) { + ctx.save(); + ctx.transform(scaleX, 0, 0, scaleY, positions[i], positions[i + 1]); + ctx.scale(1, -1); + ctx.drawImage(maskCanvas.canvas, 0, 0, width, height, + 0, -1, 1, 1); + ctx.restore(); + } + }, + + paintImageMaskXObjectGroup: + function CanvasGraphics_paintImageMaskXObjectGroup(images) { + var ctx = this.ctx; + + var fillColor = this.current.fillColor; + var isPatternFill = this.current.patternFill; + for (var i = 0, ii = images.length; i < ii; i++) { + var image = images[i]; + var width = image.width, height = image.height; + + var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height); + var maskCtx = maskCanvas.context; + maskCtx.save(); + + putBinaryImageMask(maskCtx, image); + + maskCtx.globalCompositeOperation = 'source-in'; + + maskCtx.fillStyle = isPatternFill ? + fillColor.getPattern(maskCtx, this) : fillColor; + maskCtx.fillRect(0, 0, width, height); + + maskCtx.restore(); + + ctx.save(); + ctx.transform.apply(ctx, image.transform); + ctx.scale(1, -1); + ctx.drawImage(maskCanvas.canvas, 0, 0, width, height, + 0, -1, 1, 1); + ctx.restore(); + } + }, + + paintImageXObject: function CanvasGraphics_paintImageXObject(objId) { + var imgData = this.objs.get(objId); + if (!imgData) { + warn('Dependent image isn\'t ready yet'); + return; + } + + this.paintInlineImageXObject(imgData); + }, + + paintImageXObjectRepeat: + function CanvasGraphics_paintImageXObjectRepeat(objId, scaleX, scaleY, + positions) { + var imgData = this.objs.get(objId); + if (!imgData) { + warn('Dependent image isn\'t ready yet'); + return; + } + + var width = imgData.width; + var height = imgData.height; + var map = []; + for (var i = 0, ii = positions.length; i < ii; i += 2) { + map.push({transform: [scaleX, 0, 0, scaleY, positions[i], + positions[i + 1]], x: 0, y: 0, w: width, h: height}); + } + this.paintInlineImageXObjectGroup(imgData, map); + }, + + paintInlineImageXObject: + function CanvasGraphics_paintInlineImageXObject(imgData) { + var width = imgData.width; + var height = imgData.height; + var ctx = this.ctx; + + this.save(); + // scale the image to the unit square + ctx.scale(1 / width, -1 / height); + + var currentTransform = ctx.mozCurrentTransformInverse; + var a = currentTransform[0], b = currentTransform[1]; + var widthScale = Math.max(Math.sqrt(a * a + b * b), 1); + var c = currentTransform[2], d = currentTransform[3]; + var heightScale = Math.max(Math.sqrt(c * c + d * d), 1); + + var imgToPaint, tmpCanvas; + // instanceof HTMLElement does not work in jsdom node.js module + if (imgData instanceof HTMLElement || !imgData.data) { + imgToPaint = imgData; + } else { + tmpCanvas = CachedCanvases.getCanvas('inlineImage', width, height); + var tmpCtx = tmpCanvas.context; + putBinaryImageData(tmpCtx, imgData); + imgToPaint = tmpCanvas.canvas; + } + + var paintWidth = width, paintHeight = height; + var tmpCanvasId = 'prescale1'; + // Vertial or horizontal scaling shall not be more than 2 to not loose the + // pixels during drawImage operation, painting on the temporary canvas(es) + // that are twice smaller in size + while ((widthScale > 2 && paintWidth > 1) || + (heightScale > 2 && paintHeight > 1)) { + var newWidth = paintWidth, newHeight = paintHeight; + if (widthScale > 2 && paintWidth > 1) { + newWidth = Math.ceil(paintWidth / 2); + widthScale /= paintWidth / newWidth; + } + if (heightScale > 2 && paintHeight > 1) { + newHeight = Math.ceil(paintHeight / 2); + heightScale /= paintHeight / newHeight; + } + tmpCanvas = CachedCanvases.getCanvas(tmpCanvasId, newWidth, newHeight); + tmpCtx = tmpCanvas.context; + tmpCtx.clearRect(0, 0, newWidth, newHeight); + tmpCtx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight, + 0, 0, newWidth, newHeight); + imgToPaint = tmpCanvas.canvas; + paintWidth = newWidth; + paintHeight = newHeight; + tmpCanvasId = tmpCanvasId === 'prescale1' ? 'prescale2' : 'prescale1'; + } + ctx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight, + 0, -height, width, height); + + if (this.imageLayer) { + var position = this.getCanvasPosition(0, -height); + this.imageLayer.appendImage({ + imgData: imgData, + left: position[0], + top: position[1], + width: width / currentTransform[0], + height: height / currentTransform[3] + }); + } + this.restore(); + }, + + paintInlineImageXObjectGroup: + function CanvasGraphics_paintInlineImageXObjectGroup(imgData, map) { + var ctx = this.ctx; + var w = imgData.width; + var h = imgData.height; + + var tmpCanvas = CachedCanvases.getCanvas('inlineImage', w, h); + var tmpCtx = tmpCanvas.context; + putBinaryImageData(tmpCtx, imgData); + + for (var i = 0, ii = map.length; i < ii; i++) { + var entry = map[i]; + ctx.save(); + ctx.transform.apply(ctx, entry.transform); + ctx.scale(1, -1); + ctx.drawImage(tmpCanvas.canvas, entry.x, entry.y, entry.w, entry.h, + 0, -1, 1, 1); + if (this.imageLayer) { + var position = this.getCanvasPosition(entry.x, entry.y); + this.imageLayer.appendImage({ + imgData: imgData, + left: position[0], + top: position[1], + width: w, + height: h + }); + } + ctx.restore(); + } + }, + + paintSolidColorImageMask: + function CanvasGraphics_paintSolidColorImageMask() { + this.ctx.fillRect(0, 0, 1, 1); + }, + + // Marked content + + markPoint: function CanvasGraphics_markPoint(tag) { + // TODO Marked content. + }, + markPointProps: function CanvasGraphics_markPointProps(tag, properties) { + // TODO Marked content. + }, + beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) { + // TODO Marked content. + }, + beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps( + tag, properties) { + // TODO Marked content. + }, + endMarkedContent: function CanvasGraphics_endMarkedContent() { + // TODO Marked content. + }, + + // Compatibility + + beginCompat: function CanvasGraphics_beginCompat() { + // TODO ignore undefined operators (should we do that anyway?) + }, + endCompat: function CanvasGraphics_endCompat() { + // TODO stop ignoring undefined operators + }, + + // Helper functions + + consumePath: function CanvasGraphics_consumePath() { + var ctx = this.ctx; + if (this.pendingClip) { + if (this.pendingClip === EO_CLIP) { + if (ctx.mozFillRule !== undefined) { + ctx.mozFillRule = 'evenodd'; + ctx.clip(); + ctx.mozFillRule = 'nonzero'; + } else { + try { + ctx.clip('evenodd'); + } catch (ex) { + // shouldn't really happen, but browsers might think differently + ctx.clip(); + } + } + } else { + ctx.clip(); + } + this.pendingClip = null; + } + ctx.beginPath(); + }, + getSinglePixelWidth: function CanvasGraphics_getSinglePixelWidth(scale) { + if (this.cachedGetSinglePixelWidth === null) { + var inverse = this.ctx.mozCurrentTransformInverse; + // max of the current horizontal and vertical scale + this.cachedGetSinglePixelWidth = Math.sqrt(Math.max( + (inverse[0] * inverse[0] + inverse[1] * inverse[1]), + (inverse[2] * inverse[2] + inverse[3] * inverse[3]))); + } + return this.cachedGetSinglePixelWidth; + }, + getCanvasPosition: function CanvasGraphics_getCanvasPosition(x, y) { + var transform = this.ctx.mozCurrentTransform; + return [ + transform[0] * x + transform[2] * y + transform[4], + transform[1] * x + transform[3] * y + transform[5] + ]; + } + }; + + for (var op in OPS) { + CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op]; + } + + return CanvasGraphics; +})(); + + +var WebGLUtils = (function WebGLUtilsClosure() { + function loadShader(gl, code, shaderType) { + var shader = gl.createShader(shaderType); + gl.shaderSource(shader, code); + gl.compileShader(shader); + var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS); + if (!compiled) { + var errorMsg = gl.getShaderInfoLog(shader); + throw new Error('Error during shader compilation: ' + errorMsg); + } + return shader; + } + function createVertexShader(gl, code) { + return loadShader(gl, code, gl.VERTEX_SHADER); + } + function createFragmentShader(gl, code) { + return loadShader(gl, code, gl.FRAGMENT_SHADER); + } + function createProgram(gl, shaders) { + var program = gl.createProgram(); + for (var i = 0, ii = shaders.length; i < ii; ++i) { + gl.attachShader(program, shaders[i]); + } + gl.linkProgram(program); + var linked = gl.getProgramParameter(program, gl.LINK_STATUS); + if (!linked) { + var errorMsg = gl.getProgramInfoLog(program); + throw new Error('Error during program linking: ' + errorMsg); + } + return program; + } + function createTexture(gl, image, textureId) { + gl.activeTexture(textureId); + var texture = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, texture); + + // Set the parameters so we can render any size image. + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + + // Upload the image into the texture. + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image); + return texture; + } + + var currentGL, currentCanvas; + function generateGL() { + if (currentGL) { + return; + } + currentCanvas = document.createElement('canvas'); + currentGL = currentCanvas.getContext('webgl', + { premultipliedalpha: false }); + } + + var smaskVertexShaderCode = '\ + attribute vec2 a_position; \ + attribute vec2 a_texCoord; \ + \ + uniform vec2 u_resolution; \ + \ + varying vec2 v_texCoord; \ + \ + void main() { \ + vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0; \ + gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \ + \ + v_texCoord = a_texCoord; \ + } '; + + var smaskFragmentShaderCode = '\ + precision mediump float; \ + \ + uniform vec4 u_backdrop; \ + uniform int u_subtype; \ + uniform sampler2D u_image; \ + uniform sampler2D u_mask; \ + \ + varying vec2 v_texCoord; \ + \ + void main() { \ + vec4 imageColor = texture2D(u_image, v_texCoord); \ + vec4 maskColor = texture2D(u_mask, v_texCoord); \ + if (u_backdrop.a > 0.0) { \ + maskColor.rgb = maskColor.rgb * maskColor.a + \ + u_backdrop.rgb * (1.0 - maskColor.a); \ + } \ + float lum; \ + if (u_subtype == 0) { \ + lum = maskColor.a; \ + } else { \ + lum = maskColor.r * 0.3 + maskColor.g * 0.59 + \ + maskColor.b * 0.11; \ + } \ + imageColor.a *= lum; \ + imageColor.rgb *= imageColor.a; \ + gl_FragColor = imageColor; \ + } '; + + var smaskCache = null; + + function initSmaskGL() { + var canvas, gl; + + generateGL(); + canvas = currentCanvas; + currentCanvas = null; + gl = currentGL; + currentGL = null; + + // setup a GLSL program + var vertexShader = createVertexShader(gl, smaskVertexShaderCode); + var fragmentShader = createFragmentShader(gl, smaskFragmentShaderCode); + var program = createProgram(gl, [vertexShader, fragmentShader]); + gl.useProgram(program); + + var cache = {}; + cache.gl = gl; + cache.canvas = canvas; + cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution'); + cache.positionLocation = gl.getAttribLocation(program, 'a_position'); + cache.backdropLocation = gl.getUniformLocation(program, 'u_backdrop'); + cache.subtypeLocation = gl.getUniformLocation(program, 'u_subtype'); + + var texCoordLocation = gl.getAttribLocation(program, 'a_texCoord'); + var texLayerLocation = gl.getUniformLocation(program, 'u_image'); + var texMaskLocation = gl.getUniformLocation(program, 'u_mask'); + + // provide texture coordinates for the rectangle. + var texCoordBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer); + gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ + 0.0, 0.0, + 1.0, 0.0, + 0.0, 1.0, + 0.0, 1.0, + 1.0, 0.0, + 1.0, 1.0]), gl.STATIC_DRAW); + gl.enableVertexAttribArray(texCoordLocation); + gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0); + + gl.uniform1i(texLayerLocation, 0); + gl.uniform1i(texMaskLocation, 1); + + smaskCache = cache; + } + + function composeSMask(layer, mask, properties) { + var width = layer.width, height = layer.height; + + if (!smaskCache) { + initSmaskGL(); + } + var cache = smaskCache,canvas = cache.canvas, gl = cache.gl; + canvas.width = width; + canvas.height = height; + gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight); + gl.uniform2f(cache.resolutionLocation, width, height); + + if (properties.backdrop) { + gl.uniform4f(cache.resolutionLocation, properties.backdrop[0], + properties.backdrop[1], properties.backdrop[2], 1); + } else { + gl.uniform4f(cache.resolutionLocation, 0, 0, 0, 0); + } + gl.uniform1i(cache.subtypeLocation, + properties.subtype === 'Luminosity' ? 1 : 0); + + // Create a textures + var texture = createTexture(gl, layer, gl.TEXTURE0); + var maskTexture = createTexture(gl, mask, gl.TEXTURE1); + + + // Create a buffer and put a single clipspace rectangle in + // it (2 triangles) + var buffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, buffer); + gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ + 0, 0, + width, 0, + 0, height, + 0, height, + width, 0, + width, height]), gl.STATIC_DRAW); + gl.enableVertexAttribArray(cache.positionLocation); + gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0); + + // draw + gl.clearColor(0, 0, 0, 0); + gl.enable(gl.BLEND); + gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA); + gl.clear(gl.COLOR_BUFFER_BIT); + + gl.drawArrays(gl.TRIANGLES, 0, 6); + + gl.flush(); + + gl.deleteTexture(texture); + gl.deleteTexture(maskTexture); + gl.deleteBuffer(buffer); + + return canvas; + } + + var figuresVertexShaderCode = '\ + attribute vec2 a_position; \ + attribute vec3 a_color; \ + \ + uniform vec2 u_resolution; \ + uniform vec2 u_scale; \ + uniform vec2 u_offset; \ + \ + varying vec4 v_color; \ + \ + void main() { \ + vec2 position = (a_position + u_offset) * u_scale; \ + vec2 clipSpace = (position / u_resolution) * 2.0 - 1.0; \ + gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \ + \ + v_color = vec4(a_color / 255.0, 1.0); \ + } '; + + var figuresFragmentShaderCode = '\ + precision mediump float; \ + \ + varying vec4 v_color; \ + \ + void main() { \ + gl_FragColor = v_color; \ + } '; + + var figuresCache = null; + + function initFiguresGL() { + var canvas, gl; + + generateGL(); + canvas = currentCanvas; + currentCanvas = null; + gl = currentGL; + currentGL = null; + + // setup a GLSL program + var vertexShader = createVertexShader(gl, figuresVertexShaderCode); + var fragmentShader = createFragmentShader(gl, figuresFragmentShaderCode); + var program = createProgram(gl, [vertexShader, fragmentShader]); + gl.useProgram(program); + + var cache = {}; + cache.gl = gl; + cache.canvas = canvas; + cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution'); + cache.scaleLocation = gl.getUniformLocation(program, 'u_scale'); + cache.offsetLocation = gl.getUniformLocation(program, 'u_offset'); + cache.positionLocation = gl.getAttribLocation(program, 'a_position'); + cache.colorLocation = gl.getAttribLocation(program, 'a_color'); + + figuresCache = cache; + } + + function drawFigures(width, height, backgroundColor, figures, context) { + if (!figuresCache) { + initFiguresGL(); + } + var cache = figuresCache, canvas = cache.canvas, gl = cache.gl; + + canvas.width = width; + canvas.height = height; + gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight); + gl.uniform2f(cache.resolutionLocation, width, height); + + // count triangle points + var count = 0; + var i, ii, rows; + for (i = 0, ii = figures.length; i < ii; i++) { + switch (figures[i].type) { + case 'lattice': + rows = (figures[i].coords.length / figures[i].verticesPerRow) | 0; + count += (rows - 1) * (figures[i].verticesPerRow - 1) * 6; + break; + case 'triangles': + count += figures[i].coords.length; + break; + } + } + // transfer data + var coords = new Float32Array(count * 2); + var colors = new Uint8Array(count * 3); + var coordsMap = context.coords, colorsMap = context.colors; + var pIndex = 0, cIndex = 0; + for (i = 0, ii = figures.length; i < ii; i++) { + var figure = figures[i], ps = figure.coords, cs = figure.colors; + switch (figure.type) { + case 'lattice': + var cols = figure.verticesPerRow; + rows = (ps.length / cols) | 0; + for (var row = 1; row < rows; row++) { + var offset = row * cols + 1; + for (var col = 1; col < cols; col++, offset++) { + coords[pIndex] = coordsMap[ps[offset - cols - 1]]; + coords[pIndex + 1] = coordsMap[ps[offset - cols - 1] + 1]; + coords[pIndex + 2] = coordsMap[ps[offset - cols]]; + coords[pIndex + 3] = coordsMap[ps[offset - cols] + 1]; + coords[pIndex + 4] = coordsMap[ps[offset - 1]]; + coords[pIndex + 5] = coordsMap[ps[offset - 1] + 1]; + colors[cIndex] = colorsMap[cs[offset - cols - 1]]; + colors[cIndex + 1] = colorsMap[cs[offset - cols - 1] + 1]; + colors[cIndex + 2] = colorsMap[cs[offset - cols - 1] + 2]; + colors[cIndex + 3] = colorsMap[cs[offset - cols]]; + colors[cIndex + 4] = colorsMap[cs[offset - cols] + 1]; + colors[cIndex + 5] = colorsMap[cs[offset - cols] + 2]; + colors[cIndex + 6] = colorsMap[cs[offset - 1]]; + colors[cIndex + 7] = colorsMap[cs[offset - 1] + 1]; + colors[cIndex + 8] = colorsMap[cs[offset - 1] + 2]; + + coords[pIndex + 6] = coords[pIndex + 2]; + coords[pIndex + 7] = coords[pIndex + 3]; + coords[pIndex + 8] = coords[pIndex + 4]; + coords[pIndex + 9] = coords[pIndex + 5]; + coords[pIndex + 10] = coordsMap[ps[offset]]; + coords[pIndex + 11] = coordsMap[ps[offset] + 1]; + colors[cIndex + 9] = colors[cIndex + 3]; + colors[cIndex + 10] = colors[cIndex + 4]; + colors[cIndex + 11] = colors[cIndex + 5]; + colors[cIndex + 12] = colors[cIndex + 6]; + colors[cIndex + 13] = colors[cIndex + 7]; + colors[cIndex + 14] = colors[cIndex + 8]; + colors[cIndex + 15] = colorsMap[cs[offset]]; + colors[cIndex + 16] = colorsMap[cs[offset] + 1]; + colors[cIndex + 17] = colorsMap[cs[offset] + 2]; + pIndex += 12; + cIndex += 18; + } + } + break; + case 'triangles': + for (var j = 0, jj = ps.length; j < jj; j++) { + coords[pIndex] = coordsMap[ps[j]]; + coords[pIndex + 1] = coordsMap[ps[j] + 1]; + colors[cIndex] = colorsMap[cs[i]]; + colors[cIndex + 1] = colorsMap[cs[j] + 1]; + colors[cIndex + 2] = colorsMap[cs[j] + 2]; + pIndex += 2; + cIndex += 3; + } + break; + } + } + + // draw + if (backgroundColor) { + gl.clearColor(backgroundColor[0] / 255, backgroundColor[1] / 255, + backgroundColor[2] / 255, 1.0); + } else { + gl.clearColor(0, 0, 0, 0); + } + gl.clear(gl.COLOR_BUFFER_BIT); + + var coordsBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, coordsBuffer); + gl.bufferData(gl.ARRAY_BUFFER, coords, gl.STATIC_DRAW); + gl.enableVertexAttribArray(cache.positionLocation); + gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0); + + var colorsBuffer = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, colorsBuffer); + gl.bufferData(gl.ARRAY_BUFFER, colors, gl.STATIC_DRAW); + gl.enableVertexAttribArray(cache.colorLocation); + gl.vertexAttribPointer(cache.colorLocation, 3, gl.UNSIGNED_BYTE, false, + 0, 0); + + gl.uniform2f(cache.scaleLocation, context.scaleX, context.scaleY); + gl.uniform2f(cache.offsetLocation, context.offsetX, context.offsetY); + + gl.drawArrays(gl.TRIANGLES, 0, count); + + gl.flush(); + + gl.deleteBuffer(coordsBuffer); + gl.deleteBuffer(colorsBuffer); + + return canvas; + } + + function cleanup() { + if (smaskCache && smaskCache.canvas) { + smaskCache.canvas.width = 0; + smaskCache.canvas.height = 0; + } + if (figuresCache && figuresCache.canvas) { + figuresCache.canvas.width = 0; + figuresCache.canvas.height = 0; + } + smaskCache = null; + figuresCache = null; + } + + return { + get isEnabled() { + if (PDFJS.disableWebGL) { + return false; + } + var enabled = false; + try { + generateGL(); + enabled = !!currentGL; + } catch (e) { } + return shadow(this, 'isEnabled', enabled); + }, + composeSMask: composeSMask, + drawFigures: drawFigures, + clear: cleanup + }; +})(); + + +var ShadingIRs = {}; + +ShadingIRs.RadialAxial = { + fromIR: function RadialAxial_fromIR(raw) { + var type = raw[1]; + var colorStops = raw[2]; + var p0 = raw[3]; + var p1 = raw[4]; + var r0 = raw[5]; + var r1 = raw[6]; + return { + type: 'Pattern', + getPattern: function RadialAxial_getPattern(ctx) { + var grad; + if (type === 'axial') { + grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]); + } else if (type === 'radial') { + grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1); + } + + for (var i = 0, ii = colorStops.length; i < ii; ++i) { + var c = colorStops[i]; + grad.addColorStop(c[0], c[1]); + } + return grad; + } + }; + } +}; + +var createMeshCanvas = (function createMeshCanvasClosure() { + function drawTriangle(data, context, p1, p2, p3, c1, c2, c3) { + // Very basic Gouraud-shaded triangle rasterization algorithm. + var coords = context.coords, colors = context.colors; + var bytes = data.data, rowSize = data.width * 4; + var tmp; + if (coords[p1 + 1] > coords[p2 + 1]) { + tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp; + } + if (coords[p2 + 1] > coords[p3 + 1]) { + tmp = p2; p2 = p3; p3 = tmp; tmp = c2; c2 = c3; c3 = tmp; + } + if (coords[p1 + 1] > coords[p2 + 1]) { + tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp; + } + var x1 = (coords[p1] + context.offsetX) * context.scaleX; + var y1 = (coords[p1 + 1] + context.offsetY) * context.scaleY; + var x2 = (coords[p2] + context.offsetX) * context.scaleX; + var y2 = (coords[p2 + 1] + context.offsetY) * context.scaleY; + var x3 = (coords[p3] + context.offsetX) * context.scaleX; + var y3 = (coords[p3 + 1] + context.offsetY) * context.scaleY; + if (y1 >= y3) { + return; + } + var c1r = colors[c1], c1g = colors[c1 + 1], c1b = colors[c1 + 2]; + var c2r = colors[c2], c2g = colors[c2 + 1], c2b = colors[c2 + 2]; + var c3r = colors[c3], c3g = colors[c3 + 1], c3b = colors[c3 + 2]; + + var minY = Math.round(y1), maxY = Math.round(y3); + var xa, car, cag, cab; + var xb, cbr, cbg, cbb; + var k; + for (var y = minY; y <= maxY; y++) { + if (y < y2) { + k = y < y1 ? 0 : y1 === y2 ? 1 : (y1 - y) / (y1 - y2); + xa = x1 - (x1 - x2) * k; + car = c1r - (c1r - c2r) * k; + cag = c1g - (c1g - c2g) * k; + cab = c1b - (c1b - c2b) * k; + } else { + k = y > y3 ? 1 : y2 === y3 ? 0 : (y2 - y) / (y2 - y3); + xa = x2 - (x2 - x3) * k; + car = c2r - (c2r - c3r) * k; + cag = c2g - (c2g - c3g) * k; + cab = c2b - (c2b - c3b) * k; + } + k = y < y1 ? 0 : y > y3 ? 1 : (y1 - y) / (y1 - y3); + xb = x1 - (x1 - x3) * k; + cbr = c1r - (c1r - c3r) * k; + cbg = c1g - (c1g - c3g) * k; + cbb = c1b - (c1b - c3b) * k; + var x1_ = Math.round(Math.min(xa, xb)); + var x2_ = Math.round(Math.max(xa, xb)); + var j = rowSize * y + x1_ * 4; + for (var x = x1_; x <= x2_; x++) { + k = (xa - x) / (xa - xb); + k = k < 0 ? 0 : k > 1 ? 1 : k; + bytes[j++] = (car - (car - cbr) * k) | 0; + bytes[j++] = (cag - (cag - cbg) * k) | 0; + bytes[j++] = (cab - (cab - cbb) * k) | 0; + bytes[j++] = 255; + } + } + } + + function drawFigure(data, figure, context) { + var ps = figure.coords; + var cs = figure.colors; + var i, ii; + switch (figure.type) { + case 'lattice': + var verticesPerRow = figure.verticesPerRow; + var rows = Math.floor(ps.length / verticesPerRow) - 1; + var cols = verticesPerRow - 1; + for (i = 0; i < rows; i++) { + var q = i * verticesPerRow; + for (var j = 0; j < cols; j++, q++) { + drawTriangle(data, context, + ps[q], ps[q + 1], ps[q + verticesPerRow], + cs[q], cs[q + 1], cs[q + verticesPerRow]); + drawTriangle(data, context, + ps[q + verticesPerRow + 1], ps[q + 1], ps[q + verticesPerRow], + cs[q + verticesPerRow + 1], cs[q + 1], cs[q + verticesPerRow]); + } + } + break; + case 'triangles': + for (i = 0, ii = ps.length; i < ii; i += 3) { + drawTriangle(data, context, + ps[i], ps[i + 1], ps[i + 2], + cs[i], cs[i + 1], cs[i + 2]); + } + break; + default: + error('illigal figure'); + break; + } + } + + function createMeshCanvas(bounds, combinesScale, coords, colors, figures, + backgroundColor) { + // we will increase scale on some weird factor to let antialiasing take + // care of "rough" edges + var EXPECTED_SCALE = 1.1; + // MAX_PATTERN_SIZE is used to avoid OOM situation. + var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough + + var offsetX = Math.floor(bounds[0]); + var offsetY = Math.floor(bounds[1]); + var boundsWidth = Math.ceil(bounds[2]) - offsetX; + var boundsHeight = Math.ceil(bounds[3]) - offsetY; + + var width = Math.min(Math.ceil(Math.abs(boundsWidth * combinesScale[0] * + EXPECTED_SCALE)), MAX_PATTERN_SIZE); + var height = Math.min(Math.ceil(Math.abs(boundsHeight * combinesScale[1] * + EXPECTED_SCALE)), MAX_PATTERN_SIZE); + var scaleX = boundsWidth / width; + var scaleY = boundsHeight / height; + + var context = { + coords: coords, + colors: colors, + offsetX: -offsetX, + offsetY: -offsetY, + scaleX: 1 / scaleX, + scaleY: 1 / scaleY + }; + + var canvas, tmpCanvas, i, ii; + if (WebGLUtils.isEnabled) { + canvas = WebGLUtils.drawFigures(width, height, backgroundColor, + figures, context); + + // https://bugzilla.mozilla.org/show_bug.cgi?id=972126 + tmpCanvas = CachedCanvases.getCanvas('mesh', width, height, false); + tmpCanvas.context.drawImage(canvas, 0, 0); + canvas = tmpCanvas.canvas; + } else { + tmpCanvas = CachedCanvases.getCanvas('mesh', width, height, false); + var tmpCtx = tmpCanvas.context; + + var data = tmpCtx.createImageData(width, height); + if (backgroundColor) { + var bytes = data.data; + for (i = 0, ii = bytes.length; i < ii; i += 4) { + bytes[i] = backgroundColor[0]; + bytes[i + 1] = backgroundColor[1]; + bytes[i + 2] = backgroundColor[2]; + bytes[i + 3] = 255; + } + } + for (i = 0; i < figures.length; i++) { + drawFigure(data, figures[i], context); + } + tmpCtx.putImageData(data, 0, 0); + canvas = tmpCanvas.canvas; + } + + return {canvas: canvas, offsetX: offsetX, offsetY: offsetY, + scaleX: scaleX, scaleY: scaleY}; + } + return createMeshCanvas; +})(); + +ShadingIRs.Mesh = { + fromIR: function Mesh_fromIR(raw) { + //var type = raw[1]; + var coords = raw[2]; + var colors = raw[3]; + var figures = raw[4]; + var bounds = raw[5]; + var matrix = raw[6]; + //var bbox = raw[7]; + var background = raw[8]; + return { + type: 'Pattern', + getPattern: function Mesh_getPattern(ctx, owner, shadingFill) { + var scale; + if (shadingFill) { + scale = Util.singularValueDecompose2dScale(ctx.mozCurrentTransform); + } else { + // Obtain scale from matrix and current transformation matrix. + scale = Util.singularValueDecompose2dScale(owner.baseTransform); + if (matrix) { + var matrixScale = Util.singularValueDecompose2dScale(matrix); + scale = [scale[0] * matrixScale[0], + scale[1] * matrixScale[1]]; + } + } + + + // Rasterizing on the main thread since sending/queue large canvases + // might cause OOM. + var temporaryPatternCanvas = createMeshCanvas(bounds, scale, coords, + colors, figures, shadingFill ? null : background); + + if (!shadingFill) { + ctx.setTransform.apply(ctx, owner.baseTransform); + if (matrix) { + ctx.transform.apply(ctx, matrix); + } + } + + ctx.translate(temporaryPatternCanvas.offsetX, + temporaryPatternCanvas.offsetY); + ctx.scale(temporaryPatternCanvas.scaleX, + temporaryPatternCanvas.scaleY); + + return ctx.createPattern(temporaryPatternCanvas.canvas, 'no-repeat'); + } + }; + } +}; + +ShadingIRs.Dummy = { + fromIR: function Dummy_fromIR() { + return { + type: 'Pattern', + getPattern: function Dummy_fromIR_getPattern() { + return 'hotpink'; + } + }; + } +}; + +function getShadingPatternFromIR(raw) { + var shadingIR = ShadingIRs[raw[0]]; + if (!shadingIR) { + error('Unknown IR type: ' + raw[0]); + } + return shadingIR.fromIR(raw); +} + +var TilingPattern = (function TilingPatternClosure() { + var PaintType = { + COLORED: 1, + UNCOLORED: 2 + }; + + var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough + + function TilingPattern(IR, color, ctx, objs, commonObjs, baseTransform) { + this.operatorList = IR[2]; + this.matrix = IR[3] || [1, 0, 0, 1, 0, 0]; + this.bbox = IR[4]; + this.xstep = IR[5]; + this.ystep = IR[6]; + this.paintType = IR[7]; + this.tilingType = IR[8]; + this.color = color; + this.objs = objs; + this.commonObjs = commonObjs; + this.baseTransform = baseTransform; + this.type = 'Pattern'; + this.ctx = ctx; + } + + TilingPattern.prototype = { + createPatternCanvas: function TilinPattern_createPatternCanvas(owner) { + var operatorList = this.operatorList; + var bbox = this.bbox; + var xstep = this.xstep; + var ystep = this.ystep; + var paintType = this.paintType; + var tilingType = this.tilingType; + var color = this.color; + var objs = this.objs; + var commonObjs = this.commonObjs; + + info('TilingType: ' + tilingType); + + var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3]; + + var topLeft = [x0, y0]; + // we want the canvas to be as large as the step size + var botRight = [x0 + xstep, y0 + ystep]; + + var width = botRight[0] - topLeft[0]; + var height = botRight[1] - topLeft[1]; + + // Obtain scale from matrix and current transformation matrix. + var matrixScale = Util.singularValueDecompose2dScale(this.matrix); + var curMatrixScale = Util.singularValueDecompose2dScale( + this.baseTransform); + var combinedScale = [matrixScale[0] * curMatrixScale[0], + matrixScale[1] * curMatrixScale[1]]; + + // MAX_PATTERN_SIZE is used to avoid OOM situation. + // Use width and height values that are as close as possible to the end + // result when the pattern is used. Too low value makes the pattern look + // blurry. Too large value makes it look too crispy. + width = Math.min(Math.ceil(Math.abs(width * combinedScale[0])), + MAX_PATTERN_SIZE); + + height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])), + MAX_PATTERN_SIZE); + + var tmpCanvas = CachedCanvases.getCanvas('pattern', width, height, true); + var tmpCtx = tmpCanvas.context; + var graphics = new CanvasGraphics(tmpCtx, commonObjs, objs); + graphics.groupLevel = owner.groupLevel; + + this.setFillAndStrokeStyleToContext(tmpCtx, paintType, color); + + this.setScale(width, height, xstep, ystep); + this.transformToScale(graphics); + + // transform coordinates to pattern space + var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]]; + graphics.transform.apply(graphics, tmpTranslate); + + this.clipBbox(graphics, bbox, x0, y0, x1, y1); + + graphics.executeOperatorList(operatorList); + return tmpCanvas.canvas; + }, + + setScale: function TilingPattern_setScale(width, height, xstep, ystep) { + this.scale = [width / xstep, height / ystep]; + }, + + transformToScale: function TilingPattern_transformToScale(graphics) { + var scale = this.scale; + var tmpScale = [scale[0], 0, 0, scale[1], 0, 0]; + graphics.transform.apply(graphics, tmpScale); + }, + + scaleToContext: function TilingPattern_scaleToContext() { + var scale = this.scale; + this.ctx.scale(1 / scale[0], 1 / scale[1]); + }, + + clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) { + if (bbox && isArray(bbox) && bbox.length === 4) { + var bboxWidth = x1 - x0; + var bboxHeight = y1 - y0; + graphics.ctx.rect(x0, y0, bboxWidth, bboxHeight); + graphics.clip(); + graphics.endPath(); + } + }, + + setFillAndStrokeStyleToContext: + function setFillAndStrokeStyleToContext(context, paintType, color) { + switch (paintType) { + case PaintType.COLORED: + var ctx = this.ctx; + context.fillStyle = ctx.fillStyle; + context.strokeStyle = ctx.strokeStyle; + break; + case PaintType.UNCOLORED: + var cssColor = Util.makeCssRgb(color[0], color[1], color[2]); + context.fillStyle = cssColor; + context.strokeStyle = cssColor; + break; + default: + error('Unsupported paint type: ' + paintType); + } + }, + + getPattern: function TilingPattern_getPattern(ctx, owner) { + var temporaryPatternCanvas = this.createPatternCanvas(owner); + + ctx = this.ctx; + ctx.setTransform.apply(ctx, this.baseTransform); + ctx.transform.apply(ctx, this.matrix); + this.scaleToContext(); + + return ctx.createPattern(temporaryPatternCanvas, 'repeat'); + } + }; + + return TilingPattern; +})(); + + +PDFJS.disableFontFace = false; + +var FontLoader = { + insertRule: function fontLoaderInsertRule(rule) { + var styleElement = document.getElementById('PDFJS_FONT_STYLE_TAG'); + if (!styleElement) { + styleElement = document.createElement('style'); + styleElement.id = 'PDFJS_FONT_STYLE_TAG'; + document.documentElement.getElementsByTagName('head')[0].appendChild( + styleElement); + } + + var styleSheet = styleElement.sheet; + styleSheet.insertRule(rule, styleSheet.cssRules.length); + }, + + clear: function fontLoaderClear() { + var styleElement = document.getElementById('PDFJS_FONT_STYLE_TAG'); + if (styleElement) { + styleElement.parentNode.removeChild(styleElement); + } +//#if !(MOZCENTRAL) + this.nativeFontFaces.forEach(function(nativeFontFace) { + document.fonts.delete(nativeFontFace); + }); + this.nativeFontFaces.length = 0; +//#endif + }, +//#if !(MOZCENTRAL) + get loadTestFont() { + // This is a CFF font with 1 glyph for '.' that fills its entire width and + // height. + return shadow(this, 'loadTestFont', atob( + 'T1RUTwALAIAAAwAwQ0ZGIDHtZg4AAAOYAAAAgUZGVE1lkzZwAAAEHAAAABxHREVGABQAFQ' + + 'AABDgAAAAeT1MvMlYNYwkAAAEgAAAAYGNtYXABDQLUAAACNAAAAUJoZWFk/xVFDQAAALwA' + + 'AAA2aGhlYQdkA+oAAAD0AAAAJGhtdHgD6AAAAAAEWAAAAAZtYXhwAAJQAAAAARgAAAAGbm' + + 'FtZVjmdH4AAAGAAAAAsXBvc3T/hgAzAAADeAAAACAAAQAAAAEAALZRFsRfDzz1AAsD6AAA' + + 'AADOBOTLAAAAAM4KHDwAAAAAA+gDIQAAAAgAAgAAAAAAAAABAAADIQAAAFoD6AAAAAAD6A' + + 'ABAAAAAAAAAAAAAAAAAAAAAQAAUAAAAgAAAAQD6AH0AAUAAAKKArwAAACMAooCvAAAAeAA' + + 'MQECAAACAAYJAAAAAAAAAAAAAQAAAAAAAAAAAAAAAFBmRWQAwAAuAC4DIP84AFoDIQAAAA' + + 'AAAQAAAAAAAAAAACAAIAABAAAADgCuAAEAAAAAAAAAAQAAAAEAAAAAAAEAAQAAAAEAAAAA' + + 'AAIAAQAAAAEAAAAAAAMAAQAAAAEAAAAAAAQAAQAAAAEAAAAAAAUAAQAAAAEAAAAAAAYAAQ' + + 'AAAAMAAQQJAAAAAgABAAMAAQQJAAEAAgABAAMAAQQJAAIAAgABAAMAAQQJAAMAAgABAAMA' + + 'AQQJAAQAAgABAAMAAQQJAAUAAgABAAMAAQQJAAYAAgABWABYAAAAAAAAAwAAAAMAAAAcAA' + + 'EAAAAAADwAAwABAAAAHAAEACAAAAAEAAQAAQAAAC7//wAAAC7////TAAEAAAAAAAABBgAA' + + 'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAA' + + 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' + + 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' + + 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' + + 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAA' + + 'AAAAD/gwAyAAAAAQAAAAAAAAAAAAAAAAAAAAABAAQEAAEBAQJYAAEBASH4DwD4GwHEAvgc' + + 'A/gXBIwMAYuL+nz5tQXkD5j3CBLnEQACAQEBIVhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWF' + + 'hYWFhYWFhYAAABAQAADwACAQEEE/t3Dov6fAH6fAT+fPp8+nwHDosMCvm1Cvm1DAz6fBQA' + + 'AAAAAAABAAAAAMmJbzEAAAAAzgTjFQAAAADOBOQpAAEAAAAAAAAADAAUAAQAAAABAAAAAg' + + 'ABAAAAAAAAAAAD6AAAAAAAAA==' + )); + }, + + loadTestFontId: 0, + + loadingContext: { + requests: [], + nextRequestId: 0 + }, + + isSyncFontLoadingSupported: (function detectSyncFontLoadingSupport() { + if (isWorker) { + return false; + } + + // User agent string sniffing is bad, but there is no reliable way to tell + // if font is fully loaded and ready to be used with canvas. + var userAgent = window.navigator.userAgent; + var m = /Mozilla\/5.0.*?rv:(\d+).*? Gecko/.exec(userAgent); + if (m && m[1] >= 14) { + return true; + } + // TODO other browsers + if (userAgent === 'node') { + return true; + } + return false; + })(), + + nativeFontFaces: [], + + isFontLoadingAPISupported: (!isWorker && typeof document !== 'undefined' && + !!document.fonts), + + addNativeFontFace: function fontLoader_addNativeFontFace(nativeFontFace) { + this.nativeFontFaces.push(nativeFontFace); + document.fonts.add(nativeFontFace); + }, + + bind: function fontLoaderBind(fonts, callback) { + assert(!isWorker, 'bind() shall be called from main thread'); + + var rules = []; + var fontsToLoad = []; + var fontLoadPromises = []; + for (var i = 0, ii = fonts.length; i < ii; i++) { + var font = fonts[i]; + + // Add the font to the DOM only once or skip if the font + // is already loaded. + if (font.attached || font.loading === false) { + continue; + } + font.attached = true; + + if (this.isFontLoadingAPISupported) { + var nativeFontFace = font.createNativeFontFace(); + if (nativeFontFace) { + fontLoadPromises.push(nativeFontFace.loaded); + } + } else { + var rule = font.bindDOM(); + if (rule) { + rules.push(rule); + fontsToLoad.push(font); + } + } + } + + var request = FontLoader.queueLoadingCallback(callback); + if (this.isFontLoadingAPISupported) { + Promise.all(fontsToLoad).then(function() { + request.complete(); + }); + } else if (rules.length > 0 && !this.isSyncFontLoadingSupported) { + FontLoader.prepareFontLoadEvent(rules, fontsToLoad, request); + } else { + request.complete(); + } + }, + + queueLoadingCallback: function FontLoader_queueLoadingCallback(callback) { + function LoadLoader_completeRequest() { + assert(!request.end, 'completeRequest() cannot be called twice'); + request.end = Date.now(); + + // sending all completed requests in order how they were queued + while (context.requests.length > 0 && context.requests[0].end) { + var otherRequest = context.requests.shift(); + setTimeout(otherRequest.callback, 0); + } + } + + var context = FontLoader.loadingContext; + var requestId = 'pdfjs-font-loading-' + (context.nextRequestId++); + var request = { + id: requestId, + complete: LoadLoader_completeRequest, + callback: callback, + started: Date.now() + }; + context.requests.push(request); + return request; + }, + + prepareFontLoadEvent: function fontLoaderPrepareFontLoadEvent(rules, + fonts, + request) { + /** Hack begin */ + // There's currently no event when a font has finished downloading so the + // following code is a dirty hack to 'guess' when a font is + // ready. It's assumed fonts are loaded in order, so add a known test + // font after the desired fonts and then test for the loading of that + // test font. + + function int32(data, offset) { + return (data.charCodeAt(offset) << 24) | + (data.charCodeAt(offset + 1) << 16) | + (data.charCodeAt(offset + 2) << 8) | + (data.charCodeAt(offset + 3) & 0xff); + } + + function spliceString(s, offset, remove, insert) { + var chunk1 = s.substr(0, offset); + var chunk2 = s.substr(offset + remove); + return chunk1 + insert + chunk2; + } + + var i, ii; + + var canvas = document.createElement('canvas'); + canvas.width = 1; + canvas.height = 1; + var ctx = canvas.getContext('2d'); + + var called = 0; + function isFontReady(name, callback) { + called++; + // With setTimeout clamping this gives the font ~100ms to load. + if(called > 30) { + warn('Load test font never loaded.'); + callback(); + return; + } + ctx.font = '30px ' + name; + ctx.fillText('.', 0, 20); + var imageData = ctx.getImageData(0, 0, 1, 1); + if (imageData.data[3] > 0) { + callback(); + return; + } + setTimeout(isFontReady.bind(null, name, callback)); + } + + var loadTestFontId = 'lt' + Date.now() + this.loadTestFontId++; + // Chromium seems to cache fonts based on a hash of the actual font data, + // so the font must be modified for each load test else it will appear to + // be loaded already. + // TODO: This could maybe be made faster by avoiding the btoa of the full + // font by splitting it in chunks before hand and padding the font id. + var data = this.loadTestFont; + var COMMENT_OFFSET = 976; // has to be on 4 byte boundary (for checksum) + data = spliceString(data, COMMENT_OFFSET, loadTestFontId.length, + loadTestFontId); + // CFF checksum is important for IE, adjusting it + var CFF_CHECKSUM_OFFSET = 16; + var XXXX_VALUE = 0x58585858; // the "comment" filled with 'X' + var checksum = int32(data, CFF_CHECKSUM_OFFSET); + for (i = 0, ii = loadTestFontId.length - 3; i < ii; i += 4) { + checksum = (checksum - XXXX_VALUE + int32(loadTestFontId, i)) | 0; + } + if (i < loadTestFontId.length) { // align to 4 bytes boundary + checksum = (checksum - XXXX_VALUE + + int32(loadTestFontId + 'XXX', i)) | 0; + } + data = spliceString(data, CFF_CHECKSUM_OFFSET, 4, string32(checksum)); + + var url = 'url(data:font/opentype;base64,' + btoa(data) + ');'; + var rule = '@font-face { font-family:"' + loadTestFontId + '";src:' + + url + '}'; + FontLoader.insertRule(rule); + + var names = []; + for (i = 0, ii = fonts.length; i < ii; i++) { + names.push(fonts[i].loadedName); + } + names.push(loadTestFontId); + + var div = document.createElement('div'); + div.setAttribute('style', + 'visibility: hidden;' + + 'width: 10px; height: 10px;' + + 'position: absolute; top: 0px; left: 0px;'); + for (i = 0, ii = names.length; i < ii; ++i) { + var span = document.createElement('span'); + span.textContent = 'Hi'; + span.style.fontFamily = names[i]; + div.appendChild(span); + } + document.body.appendChild(div); + + isFontReady(loadTestFontId, function() { + document.body.removeChild(div); + request.complete(); + }); + /** Hack end */ + } +//#else +//bind: function fontLoaderBind(fonts, callback) { +// assert(!isWorker, 'bind() shall be called from main thread'); +// +// for (var i = 0, ii = fonts.length; i < ii; i++) { +// var font = fonts[i]; +// if (font.attached) { +// continue; +// } +// +// font.attached = true; +// font.bindDOM() +// } +// +// setTimeout(callback); +//} +//#endif +}; + +var FontFaceObject = (function FontFaceObjectClosure() { + function FontFaceObject(name, file, properties) { + this.compiledGlyphs = {}; + if (arguments.length === 1) { + // importing translated data + var data = arguments[0]; + for (var i in data) { + this[i] = data[i]; + } + return; + } + } + FontFaceObject.prototype = { +//#if !(MOZCENTRAL) + createNativeFontFace: function FontFaceObject_createNativeFontFace() { + if (!this.data) { + return null; + } + + if (PDFJS.disableFontFace) { + this.disableFontFace = true; + return null; + } + + var nativeFontFace = new FontFace(this.loadedName, this.data, {}); + + FontLoader.addNativeFontFace(nativeFontFace); + + if (PDFJS.pdfBug && 'FontInspector' in globalScope && + globalScope['FontInspector'].enabled) { + globalScope['FontInspector'].fontAdded(this); + } + return nativeFontFace; + }, +//#endif + + bindDOM: function FontFaceObject_bindDOM() { + if (!this.data) { + return null; + } + + if (PDFJS.disableFontFace) { + this.disableFontFace = true; + return null; + } + + var data = bytesToString(new Uint8Array(this.data)); + var fontName = this.loadedName; + + // Add the font-face rule to the document + var url = ('url(data:' + this.mimetype + ';base64,' + + window.btoa(data) + ');'); + var rule = '@font-face { font-family:"' + fontName + '";src:' + url + '}'; + FontLoader.insertRule(rule); + + if (PDFJS.pdfBug && 'FontInspector' in globalScope && + globalScope['FontInspector'].enabled) { + globalScope['FontInspector'].fontAdded(this, url); + } + + return rule; + }, + + getPathGenerator: function FontLoader_getPathGenerator(objs, character) { + if (!(character in this.compiledGlyphs)) { + var js = objs.get(this.loadedName + '_path_' + character); + /*jshint -W054 */ + this.compiledGlyphs[character] = new Function('c', 'size', js); + } + return this.compiledGlyphs[character]; + } + }; + return FontFaceObject; +})(); + + +var ANNOT_MIN_SIZE = 10; // px + +var AnnotationUtils = (function AnnotationUtilsClosure() { + // TODO(mack): This dupes some of the logic in CanvasGraphics.setFont() + function setTextStyles(element, item, fontObj) { + + var style = element.style; + style.fontSize = item.fontSize + 'px'; + style.direction = item.fontDirection < 0 ? 'rtl': 'ltr'; + + if (!fontObj) { + return; + } + + style.fontWeight = fontObj.black ? + (fontObj.bold ? 'bolder' : 'bold') : + (fontObj.bold ? 'bold' : 'normal'); + style.fontStyle = fontObj.italic ? 'italic' : 'normal'; + + var fontName = fontObj.loadedName; + var fontFamily = fontName ? '"' + fontName + '", ' : ''; + // Use a reasonable default font if the font doesn't specify a fallback + var fallbackName = fontObj.fallbackName || 'Helvetica, sans-serif'; + style.fontFamily = fontFamily + fallbackName; + } + + function initContainer(item, drawBorder) { + var container = document.createElement('section'); + var cstyle = container.style; + var width = item.rect[2] - item.rect[0]; + var height = item.rect[3] - item.rect[1]; + + var bWidth = item.borderWidth || 0; + if (bWidth) { + width = width - 2 * bWidth; + height = height - 2 * bWidth; + cstyle.borderWidth = bWidth + 'px'; + var color = item.color; + if (drawBorder && color) { + cstyle.borderStyle = 'solid'; + cstyle.borderColor = Util.makeCssRgb(Math.round(color[0] * 255), + Math.round(color[1] * 255), + Math.round(color[2] * 255)); + } + } + cstyle.width = width + 'px'; + cstyle.height = height + 'px'; + return container; + } + + function getHtmlElementForTextWidgetAnnotation(item, commonObjs) { + var element = document.createElement('div'); + var width = item.rect[2] - item.rect[0]; + var height = item.rect[3] - item.rect[1]; + element.style.width = width + 'px'; + element.style.height = height + 'px'; + element.style.display = 'table'; + + var content = document.createElement('div'); + content.textContent = item.fieldValue; + var textAlignment = item.textAlignment; + content.style.textAlign = ['left', 'center', 'right'][textAlignment]; + content.style.verticalAlign = 'middle'; + content.style.display = 'table-cell'; + + var fontObj = item.fontRefName ? + commonObjs.getData(item.fontRefName) : null; + setTextStyles(content, item, fontObj); + + element.appendChild(content); + + return element; + } + + function getHtmlElementForTextAnnotation(item) { + var rect = item.rect; + + // sanity check because of OOo-generated PDFs + if ((rect[3] - rect[1]) < ANNOT_MIN_SIZE) { + rect[3] = rect[1] + ANNOT_MIN_SIZE; + } + if ((rect[2] - rect[0]) < ANNOT_MIN_SIZE) { + rect[2] = rect[0] + (rect[3] - rect[1]); // make it square + } + + var container = initContainer(item, false); + container.className = 'annotText'; + + var image = document.createElement('img'); + image.style.height = container.style.height; + image.style.width = container.style.width; + var iconName = item.name; + image.src = PDFJS.imageResourcesPath + 'annotation-' + + iconName.toLowerCase() + '.svg'; + image.alt = '[{{type}} Annotation]'; + image.dataset.l10nId = 'text_annotation_type'; + image.dataset.l10nArgs = JSON.stringify({type: iconName}); + + var contentWrapper = document.createElement('div'); + contentWrapper.className = 'annotTextContentWrapper'; + contentWrapper.style.left = Math.floor(rect[2] - rect[0] + 5) + 'px'; + contentWrapper.style.top = '-10px'; + + var content = document.createElement('div'); + content.className = 'annotTextContent'; + content.setAttribute('hidden', true); + + var i, ii; + if (item.hasBgColor) { + var color = item.color; + + // Enlighten the color (70%) + var BACKGROUND_ENLIGHT = 0.7; + var r = BACKGROUND_ENLIGHT * (1.0 - color[0]) + color[0]; + var g = BACKGROUND_ENLIGHT * (1.0 - color[1]) + color[1]; + var b = BACKGROUND_ENLIGHT * (1.0 - color[2]) + color[2]; + content.style.backgroundColor = Util.makeCssRgb((r * 255) | 0, + (g * 255) | 0, + (b * 255) | 0); + } + + var title = document.createElement('h1'); + var text = document.createElement('p'); + title.textContent = item.title; + + if (!item.content && !item.title) { + content.setAttribute('hidden', true); + } else { + var e = document.createElement('span'); + var lines = item.content.split(/(?:\r\n?|\n)/); + for (i = 0, ii = lines.length; i < ii; ++i) { + var line = lines[i]; + e.appendChild(document.createTextNode(line)); + if (i < (ii - 1)) { + e.appendChild(document.createElement('br')); + } + } + text.appendChild(e); + + var pinned = false; + + var showAnnotation = function showAnnotation(pin) { + if (pin) { + pinned = true; + } + if (content.hasAttribute('hidden')) { + container.style.zIndex += 1; + content.removeAttribute('hidden'); + } + }; + + var hideAnnotation = function hideAnnotation(unpin) { + if (unpin) { + pinned = false; + } + if (!content.hasAttribute('hidden') && !pinned) { + container.style.zIndex -= 1; + content.setAttribute('hidden', true); + } + }; + + var toggleAnnotation = function toggleAnnotation() { + if (pinned) { + hideAnnotation(true); + } else { + showAnnotation(true); + } + }; + + image.addEventListener('click', function image_clickHandler() { + toggleAnnotation(); + }, false); + image.addEventListener('mouseover', function image_mouseOverHandler() { + showAnnotation(); + }, false); + image.addEventListener('mouseout', function image_mouseOutHandler() { + hideAnnotation(); + }, false); + + content.addEventListener('click', function content_clickHandler() { + hideAnnotation(true); + }, false); + } + + content.appendChild(title); + content.appendChild(text); + contentWrapper.appendChild(content); + container.appendChild(image); + container.appendChild(contentWrapper); + + return container; + } + + function getHtmlElementForLinkAnnotation(item) { + var container = initContainer(item, true); + container.className = 'annotLink'; + + var link = document.createElement('a'); + link.href = link.title = item.url || ''; + if (item.url && PDFJS.openExternalLinksInNewWindow) { + link.target = '_blank'; + } + + container.appendChild(link); + + return container; + } + + function getHtmlElement(data, objs) { + switch (data.annotationType) { + case AnnotationType.WIDGET: + return getHtmlElementForTextWidgetAnnotation(data, objs); + case AnnotationType.TEXT: + return getHtmlElementForTextAnnotation(data); + case AnnotationType.LINK: + return getHtmlElementForLinkAnnotation(data); + default: + throw new Error('Unsupported annotationType: ' + data.annotationType); + } + } + + return { + getHtmlElement: getHtmlElement + }; +})(); +PDFJS.AnnotationUtils = AnnotationUtils; + + +//#if (GENERIC || SINGLE_FILE) +var SVG_DEFAULTS = { + fontStyle: 'normal', + fontWeight: 'normal', + fillColor: '#000000' +}; + +var convertImgDataToPng = (function convertImgDataToPngClosure() { + var PNG_HEADER = + new Uint8Array([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]); + + var CHUNK_WRAPPER_SIZE = 12; + + var crcTable = new Int32Array(256); + for (var i = 0; i < 256; i++) { + var c = i; + for (var h = 0; h < 8; h++) { + if (c & 1) { + c = 0xedB88320 ^ ((c >> 1) & 0x7fffffff); + } else { + c = (c >> 1) & 0x7fffffff; + } + } + crcTable[i] = c; + } + + function crc32(data, start, end) { + var crc = -1; + for (var i = start; i < end; i++) { + var a = (crc ^ data[i]) & 0xff; + var b = crcTable[a]; + crc = (crc >>> 8) ^ b; + } + return crc ^ -1; + } + + function writePngChunk(type, body, data, offset) { + var p = offset; + var len = body.length; + + data[p] = len >> 24 & 0xff; + data[p + 1] = len >> 16 & 0xff; + data[p + 2] = len >> 8 & 0xff; + data[p + 3] = len & 0xff; + p += 4; + + data[p] = type.charCodeAt(0) & 0xff; + data[p + 1] = type.charCodeAt(1) & 0xff; + data[p + 2] = type.charCodeAt(2) & 0xff; + data[p + 3] = type.charCodeAt(3) & 0xff; + p += 4; + + data.set(body, p); + p += body.length; + + var crc = crc32(data, offset + 4, p); + + data[p] = crc >> 24 & 0xff; + data[p + 1] = crc >> 16 & 0xff; + data[p + 2] = crc >> 8 & 0xff; + data[p + 3] = crc & 0xff; + } + + function adler32(data, start, end) { + var a = 1; + var b = 0; + for (var i = start; i < end; ++i) { + a = (a + (data[i] & 0xff)) % 65521; + b = (b + a) % 65521; + } + return (b << 16) | a; + } + + function encode(imgData, kind) { + var width = imgData.width; + var height = imgData.height; + var bitDepth, colorType, lineSize; + var bytes = imgData.data; + + switch (kind) { + case ImageKind.GRAYSCALE_1BPP: + colorType = 0; + bitDepth = 1; + lineSize = (width + 7) >> 3; + break; + case ImageKind.RGB_24BPP: + colorType = 2; + bitDepth = 8; + lineSize = width * 3; + break; + case ImageKind.RGBA_32BPP: + colorType = 6; + bitDepth = 8; + lineSize = width * 4; + break; + default: + throw new Error('invalid format'); + } + + // prefix every row with predictor 0 + var literals = new Uint8Array((1 + lineSize) * height); + var offsetLiterals = 0, offsetBytes = 0; + var y, i; + for (y = 0; y < height; ++y) { + literals[offsetLiterals++] = 0; // no prediction + literals.set(bytes.subarray(offsetBytes, offsetBytes + lineSize), + offsetLiterals); + offsetBytes += lineSize; + offsetLiterals += lineSize; + } + + if (kind === ImageKind.GRAYSCALE_1BPP) { + // inverting for B/W + offsetLiterals = 0; + for (y = 0; y < height; y++) { + offsetLiterals++; // skipping predictor + for (i = 0; i < lineSize; i++) { + literals[offsetLiterals++] ^= 0xFF; + } + } + } + + var ihdr = new Uint8Array([ + width >> 24 & 0xff, + width >> 16 & 0xff, + width >> 8 & 0xff, + width & 0xff, + height >> 24 & 0xff, + height >> 16 & 0xff, + height >> 8 & 0xff, + height & 0xff, + bitDepth, // bit depth + colorType, // color type + 0x00, // compression method + 0x00, // filter method + 0x00 // interlace method + ]); + + var len = literals.length; + var maxBlockLength = 0xFFFF; + + var deflateBlocks = Math.ceil(len / maxBlockLength); + var idat = new Uint8Array(2 + len + deflateBlocks * 5 + 4); + var pi = 0; + idat[pi++] = 0x78; // compression method and flags + idat[pi++] = 0x9c; // flags + + var pos = 0; + while (len > maxBlockLength) { + // writing non-final DEFLATE blocks type 0 and length of 65535 + idat[pi++] = 0x00; + idat[pi++] = 0xff; + idat[pi++] = 0xff; + idat[pi++] = 0x00; + idat[pi++] = 0x00; + idat.set(literals.subarray(pos, pos + maxBlockLength), pi); + pi += maxBlockLength; + pos += maxBlockLength; + len -= maxBlockLength; + } + + // writing non-final DEFLATE blocks type 0 + idat[pi++] = 0x01; + idat[pi++] = len & 0xff; + idat[pi++] = len >> 8 & 0xff; + idat[pi++] = (~len & 0xffff) & 0xff; + idat[pi++] = (~len & 0xffff) >> 8 & 0xff; + idat.set(literals.subarray(pos), pi); + pi += literals.length - pos; + + var adler = adler32(literals, 0, literals.length); // checksum + idat[pi++] = adler >> 24 & 0xff; + idat[pi++] = adler >> 16 & 0xff; + idat[pi++] = adler >> 8 & 0xff; + idat[pi++] = adler & 0xff; + + // PNG will consists: header, IHDR+data, IDAT+data, and IEND. + var pngLength = PNG_HEADER.length + (CHUNK_WRAPPER_SIZE * 3) + + ihdr.length + idat.length; + var data = new Uint8Array(pngLength); + var offset = 0; + data.set(PNG_HEADER, offset); + offset += PNG_HEADER.length; + writePngChunk('IHDR', ihdr, data, offset); + offset += CHUNK_WRAPPER_SIZE + ihdr.length; + writePngChunk('IDATA', idat, data, offset); + offset += CHUNK_WRAPPER_SIZE + idat.length; + writePngChunk('IEND', new Uint8Array(0), data, offset); + + return PDFJS.createObjectURL(data, 'image/png'); + } + + return function convertImgDataToPng(imgData) { + var kind = (imgData.kind === undefined ? + ImageKind.GRAYSCALE_1BPP : imgData.kind); + return encode(imgData, kind); + }; +})(); + +var SVGExtraState = (function SVGExtraStateClosure() { + function SVGExtraState() { + this.fontSizeScale = 1; + this.fontWeight = SVG_DEFAULTS.fontWeight; + this.fontSize = 0; + + this.textMatrix = IDENTITY_MATRIX; + this.fontMatrix = FONT_IDENTITY_MATRIX; + this.leading = 0; + + // Current point (in user coordinates) + this.x = 0; + this.y = 0; + + // Start of text line (in text coordinates) + this.lineX = 0; + this.lineY = 0; + + // Character and word spacing + this.charSpacing = 0; + this.wordSpacing = 0; + this.textHScale = 1; + this.textRise = 0; + + // Default foreground and background colors + this.fillColor = SVG_DEFAULTS.fillColor; + this.strokeColor = '#000000'; + + this.fillAlpha = 1; + this.strokeAlpha = 1; + this.lineWidth = 1; + this.lineJoin = ''; + this.lineCap = ''; + this.miterLimit = 0; + + this.dashArray = []; + this.dashPhase = 0; + + this.dependencies = []; + + // Clipping + this.clipId = ''; + this.pendingClip = false; + + this.maskId = ''; + } + + SVGExtraState.prototype = { + clone: function SVGExtraState_clone() { + return Object.create(this); + }, + setCurrentPoint: function SVGExtraState_setCurrentPoint(x, y) { + this.x = x; + this.y = y; + } + }; + return SVGExtraState; +})(); + +var SVGGraphics = (function SVGGraphicsClosure() { + function createScratchSVG(width, height) { + var NS = 'http://www.w3.org/2000/svg'; + var svg = document.createElementNS(NS, 'svg:svg'); + svg.setAttributeNS(null, 'version', '1.1'); + svg.setAttributeNS(null, 'width', width + 'px'); + svg.setAttributeNS(null, 'height', height + 'px'); + svg.setAttributeNS(null, 'viewBox', '0 0 ' + width + ' ' + height); + return svg; + } + + function opListToTree(opList) { + var opTree = []; + var tmp = []; + var opListLen = opList.length; + + for (var x = 0; x < opListLen; x++) { + if (opList[x].fn === 'save') { + opTree.push({'fnId': 92, 'fn': 'group', 'items': []}); + tmp.push(opTree); + opTree = opTree[opTree.length - 1].items; + continue; + } + + if(opList[x].fn === 'restore') { + opTree = tmp.pop(); + } else { + opTree.push(opList[x]); + } + } + return opTree; + } + + /** + * Formats float number. + * @param value {number} number to format. + * @returns {string} + */ + function pf(value) { + if (value === (value | 0)) { // integer number + return value.toString(); + } + var s = value.toFixed(10); + var i = s.length - 1; + if (s[i] !== '0') { + return s; + } + // removing trailing zeros + do { + i--; + } while (s[i] === '0'); + return s.substr(0, s[i] === '.' ? i : i + 1); + } + + /** + * Formats transform matrix. The standard rotation, scale and translate + * matrices are replaced by their shorter forms, and for identity matrix + * returns empty string to save the memory. + * @param m {Array} matrix to format. + * @returns {string} + */ + function pm(m) { + if (m[4] === 0 && m[5] === 0) { + if (m[1] === 0 && m[2] === 0) { + if (m[0] === 1 && m[3] === 1) { + return ''; + } + return 'scale(' + pf(m[0]) + ' ' + pf(m[3]) + ')'; + } + if (m[0] === m[3] && m[1] === -m[2]) { + var a = Math.acos(m[0]) * 180 / Math.PI; + return 'rotate(' + pf(a) + ')'; + } + } else { + if (m[0] === 1 && m[1] === 0 && m[2] === 0 && m[3] === 1) { + return 'translate(' + pf(m[4]) + ' ' + pf(m[5]) + ')'; + } + } + return 'matrix(' + pf(m[0]) + ' ' + pf(m[1]) + ' ' + pf(m[2]) + ' ' + + pf(m[3]) + ' ' + pf(m[4]) + ' ' + pf(m[5]) + ')'; + } + + function SVGGraphics(commonObjs, objs) { + this.current = new SVGExtraState(); + this.transformMatrix = IDENTITY_MATRIX; // Graphics state matrix + this.transformStack = []; + this.extraStack = []; + this.commonObjs = commonObjs; + this.objs = objs; + this.pendingEOFill = false; + + this.embedFonts = false; + this.embeddedFonts = {}; + this.cssStyle = null; + } + + var NS = 'http://www.w3.org/2000/svg'; + var XML_NS = 'http://www.w3.org/XML/1998/namespace'; + var XLINK_NS = 'http://www.w3.org/1999/xlink'; + var LINE_CAP_STYLES = ['butt', 'round', 'square']; + var LINE_JOIN_STYLES = ['miter', 'round', 'bevel']; + var clipCount = 0; + var maskCount = 0; + + SVGGraphics.prototype = { + save: function SVGGraphics_save() { + this.transformStack.push(this.transformMatrix); + var old = this.current; + this.extraStack.push(old); + this.current = old.clone(); + }, + + restore: function SVGGraphics_restore() { + this.transformMatrix = this.transformStack.pop(); + this.current = this.extraStack.pop(); + + this.tgrp = document.createElementNS(NS, 'svg:g'); + this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); + this.pgrp.appendChild(this.tgrp); + }, + + group: function SVGGraphics_group(items) { + this.save(); + this.executeOpTree(items); + this.restore(); + }, + + loadDependencies: function SVGGraphics_loadDependencies(operatorList) { + var fnArray = operatorList.fnArray; + var fnArrayLen = fnArray.length; + var argsArray = operatorList.argsArray; + + var self = this; + for (var i = 0; i < fnArrayLen; i++) { + if (OPS.dependency === fnArray[i]) { + var deps = argsArray[i]; + for (var n = 0, nn = deps.length; n < nn; n++) { + var obj = deps[n]; + var common = obj.substring(0, 2) === 'g_'; + var promise; + if (common) { + promise = new Promise(function(resolve) { + self.commonObjs.get(obj, resolve); + }); + } else { + promise = new Promise(function(resolve) { + self.objs.get(obj, resolve); + }); + } + this.current.dependencies.push(promise); + } + } + } + return Promise.all(this.current.dependencies); + }, + + transform: function SVGGraphics_transform(a, b, c, d, e, f) { + var transformMatrix = [a, b, c, d, e, f]; + this.transformMatrix = PDFJS.Util.transform(this.transformMatrix, + transformMatrix); + + this.tgrp = document.createElementNS(NS, 'svg:g'); + this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); + }, + + getSVG: function SVGGraphics_getSVG(operatorList, viewport) { + this.svg = createScratchSVG(viewport.width, viewport.height); + this.viewport = viewport; + + return this.loadDependencies(operatorList).then(function () { + this.transformMatrix = IDENTITY_MATRIX; + this.pgrp = document.createElementNS(NS, 'svg:g'); // Parent group + this.pgrp.setAttributeNS(null, 'transform', pm(viewport.transform)); + this.tgrp = document.createElementNS(NS, 'svg:g'); // Transform group + this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); + this.defs = document.createElementNS(NS, 'svg:defs'); + this.pgrp.appendChild(this.defs); + this.pgrp.appendChild(this.tgrp); + this.svg.appendChild(this.pgrp); + var opTree = this.convertOpList(operatorList); + this.executeOpTree(opTree); + return this.svg; + }.bind(this)); + }, + + convertOpList: function SVGGraphics_convertOpList(operatorList) { + var argsArray = operatorList.argsArray; + var fnArray = operatorList.fnArray; + var fnArrayLen = fnArray.length; + var REVOPS = []; + var opList = []; + + for (var op in OPS) { + REVOPS[OPS[op]] = op; + } + + for (var x = 0; x < fnArrayLen; x++) { + var fnId = fnArray[x]; + opList.push({'fnId' : fnId, 'fn': REVOPS[fnId], 'args': argsArray[x]}); + } + return opListToTree(opList); + }, + + executeOpTree: function SVGGraphics_executeOpTree(opTree) { + var opTreeLen = opTree.length; + for(var x = 0; x < opTreeLen; x++) { + var fn = opTree[x].fn; + var fnId = opTree[x].fnId; + var args = opTree[x].args; + + switch (fnId | 0) { + case OPS.beginText: + this.beginText(); + break; + case OPS.setLeading: + this.setLeading(args); + break; + case OPS.setLeadingMoveText: + this.setLeadingMoveText(args[0], args[1]); + break; + case OPS.setFont: + this.setFont(args); + break; + case OPS.showText: + this.showText(args[0]); + break; + case OPS.showSpacedText: + this.showText(args[0]); + break; + case OPS.endText: + this.endText(); + break; + case OPS.moveText: + this.moveText(args[0], args[1]); + break; + case OPS.setCharSpacing: + this.setCharSpacing(args[0]); + break; + case OPS.setWordSpacing: + this.setWordSpacing(args[0]); + break; + case OPS.setHScale: + this.setHScale(args[0]); + break; + case OPS.setTextMatrix: + this.setTextMatrix(args[0], args[1], args[2], + args[3], args[4], args[5]); + break; + case OPS.setLineWidth: + this.setLineWidth(args[0]); + break; + case OPS.setLineJoin: + this.setLineJoin(args[0]); + break; + case OPS.setLineCap: + this.setLineCap(args[0]); + break; + case OPS.setMiterLimit: + this.setMiterLimit(args[0]); + break; + case OPS.setFillRGBColor: + this.setFillRGBColor(args[0], args[1], args[2]); + break; + case OPS.setStrokeRGBColor: + this.setStrokeRGBColor(args[0], args[1], args[2]); + break; + case OPS.setDash: + this.setDash(args[0], args[1]); + break; + case OPS.setGState: + this.setGState(args[0]); + break; + case OPS.fill: + this.fill(); + break; + case OPS.eoFill: + this.eoFill(); + break; + case OPS.stroke: + this.stroke(); + break; + case OPS.fillStroke: + this.fillStroke(); + break; + case OPS.eoFillStroke: + this.eoFillStroke(); + break; + case OPS.clip: + this.clip('nonzero'); + break; + case OPS.eoClip: + this.clip('evenodd'); + break; + case OPS.paintSolidColorImageMask: + this.paintSolidColorImageMask(); + break; + case OPS.paintJpegXObject: + this.paintJpegXObject(args[0], args[1], args[2]); + break; + case OPS.paintImageXObject: + this.paintImageXObject(args[0]); + break; + case OPS.paintInlineImageXObject: + this.paintInlineImageXObject(args[0]); + break; + case OPS.paintImageMaskXObject: + this.paintImageMaskXObject(args[0]); + break; + case OPS.paintFormXObjectBegin: + this.paintFormXObjectBegin(args[0], args[1]); + break; + case OPS.paintFormXObjectEnd: + this.paintFormXObjectEnd(); + break; + case OPS.closePath: + this.closePath(); + break; + case OPS.closeStroke: + this.closeStroke(); + break; + case OPS.closeFillStroke: + this.closeFillStroke(); + break; + case OPS.nextLine: + this.nextLine(); + break; + case OPS.transform: + this.transform(args[0], args[1], args[2], args[3], + args[4], args[5]); + break; + case OPS.constructPath: + this.constructPath(args[0], args[1]); + break; + case OPS.endPath: + this.endPath(); + break; + case 92: + this.group(opTree[x].items); + break; + default: + warn('Unimplemented method '+ fn); + break; + } + } + }, + + setWordSpacing: function SVGGraphics_setWordSpacing(wordSpacing) { + this.current.wordSpacing = wordSpacing; + }, + + setCharSpacing: function SVGGraphics_setCharSpacing(charSpacing) { + this.current.charSpacing = charSpacing; + }, + + nextLine: function SVGGraphics_nextLine() { + this.moveText(0, this.current.leading); + }, + + setTextMatrix: function SVGGraphics_setTextMatrix(a, b, c, d, e, f) { + var current = this.current; + this.current.textMatrix = this.current.lineMatrix = [a, b, c, d, e, f]; + + this.current.x = this.current.lineX = 0; + this.current.y = this.current.lineY = 0; + + current.xcoords = []; + current.tspan = document.createElementNS(NS, 'svg:tspan'); + current.tspan.setAttributeNS(null, 'font-family', current.fontFamily); + current.tspan.setAttributeNS(null, 'font-size', + pf(current.fontSize) + 'px'); + current.tspan.setAttributeNS(null, 'y', pf(-current.y)); + + current.txtElement = document.createElementNS(NS, 'svg:text'); + current.txtElement.appendChild(current.tspan); + }, + + beginText: function SVGGraphics_beginText() { + this.current.x = this.current.lineX = 0; + this.current.y = this.current.lineY = 0; + this.current.textMatrix = IDENTITY_MATRIX; + this.current.lineMatrix = IDENTITY_MATRIX; + this.current.tspan = document.createElementNS(NS, 'svg:tspan'); + this.current.txtElement = document.createElementNS(NS, 'svg:text'); + this.current.txtgrp = document.createElementNS(NS, 'svg:g'); + this.current.xcoords = []; + }, + + moveText: function SVGGraphics_moveText(x, y) { + var current = this.current; + this.current.x = this.current.lineX += x; + this.current.y = this.current.lineY += y; + + current.xcoords = []; + current.tspan = document.createElementNS(NS, 'svg:tspan'); + current.tspan.setAttributeNS(null, 'font-family', current.fontFamily); + current.tspan.setAttributeNS(null, 'font-size', + pf(current.fontSize) + 'px'); + current.tspan.setAttributeNS(null, 'y', pf(-current.y)); + }, + + showText: function SVGGraphics_showText(glyphs) { + var current = this.current; + var font = current.font; + var fontSize = current.fontSize; + + if (fontSize === 0) { + return; + } + + var charSpacing = current.charSpacing; + var wordSpacing = current.wordSpacing; + var fontDirection = current.fontDirection; + var textHScale = current.textHScale * fontDirection; + var glyphsLength = glyphs.length; + var vertical = font.vertical; + var widthAdvanceScale = fontSize * current.fontMatrix[0]; + + var x = 0, i; + for (i = 0; i < glyphsLength; ++i) { + var glyph = glyphs[i]; + if (glyph === null) { + // word break + x += fontDirection * wordSpacing; + continue; + } else if (isNum(glyph)) { + x += -glyph * fontSize * 0.001; + continue; + } + current.xcoords.push(current.x + x * textHScale); + + var width = glyph.width; + var character = glyph.fontChar; + var charWidth = width * widthAdvanceScale + charSpacing * fontDirection; + x += charWidth; + + current.tspan.textContent += character; + } + if (vertical) { + current.y -= x * textHScale; + } else { + current.x += x * textHScale; + } + + current.tspan.setAttributeNS(null, 'x', + current.xcoords.map(pf).join(' ')); + current.tspan.setAttributeNS(null, 'y', pf(-current.y)); + current.tspan.setAttributeNS(null, 'font-family', current.fontFamily); + current.tspan.setAttributeNS(null, 'font-size', + pf(current.fontSize) + 'px'); + if (current.fontStyle !== SVG_DEFAULTS.fontStyle) { + current.tspan.setAttributeNS(null, 'font-style', current.fontStyle); + } + if (current.fontWeight !== SVG_DEFAULTS.fontWeight) { + current.tspan.setAttributeNS(null, 'font-weight', current.fontWeight); + } + if (current.fillColor !== SVG_DEFAULTS.fillColor) { + current.tspan.setAttributeNS(null, 'fill', current.fillColor); + } + + current.txtElement.setAttributeNS(null, 'transform', + pm(current.textMatrix) + + ' scale(1, -1)' ); + current.txtElement.setAttributeNS(XML_NS, 'xml:space', 'preserve'); + current.txtElement.appendChild(current.tspan); + current.txtgrp.appendChild(current.txtElement); + + this.tgrp.appendChild(current.txtElement); + + }, + + setLeadingMoveText: function SVGGraphics_setLeadingMoveText(x, y) { + this.setLeading(-y); + this.moveText(x, y); + }, + + addFontStyle: function SVGGraphics_addFontStyle(fontObj) { + if (!this.cssStyle) { + this.cssStyle = document.createElementNS(NS, 'svg:style'); + this.cssStyle.setAttributeNS(null, 'type', 'text/css'); + this.defs.appendChild(this.cssStyle); + } + + var url = PDFJS.createObjectURL(fontObj.data, fontObj.mimetype); + this.cssStyle.textContent += + '@font-face { font-family: "' + fontObj.loadedName + '";' + + ' src: url(' + url + '); }\n'; + }, + + setFont: function SVGGraphics_setFont(details) { + var current = this.current; + var fontObj = this.commonObjs.get(details[0]); + var size = details[1]; + this.current.font = fontObj; + + if (this.embedFonts && fontObj.data && + !this.embeddedFonts[fontObj.loadedName]) { + this.addFontStyle(fontObj); + this.embeddedFonts[fontObj.loadedName] = fontObj; + } + + current.fontMatrix = (fontObj.fontMatrix ? + fontObj.fontMatrix : FONT_IDENTITY_MATRIX); + + var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') : + (fontObj.bold ? 'bold' : 'normal'); + var italic = fontObj.italic ? 'italic' : 'normal'; + + if (size < 0) { + size = -size; + current.fontDirection = -1; + } else { + current.fontDirection = 1; + } + current.fontSize = size; + current.fontFamily = fontObj.loadedName; + current.fontWeight = bold; + current.fontStyle = italic; + + current.tspan = document.createElementNS(NS, 'svg:tspan'); + current.tspan.setAttributeNS(null, 'y', pf(-current.y)); + current.xcoords = []; + }, + + endText: function SVGGraphics_endText() { + if (this.current.pendingClip) { + this.cgrp.appendChild(this.tgrp); + this.pgrp.appendChild(this.cgrp); + } else { + this.pgrp.appendChild(this.tgrp); + } + this.tgrp = document.createElementNS(NS, 'svg:g'); + this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); + }, + + // Path properties + setLineWidth: function SVGGraphics_setLineWidth(width) { + this.current.lineWidth = width; + }, + setLineCap: function SVGGraphics_setLineCap(style) { + this.current.lineCap = LINE_CAP_STYLES[style]; + }, + setLineJoin: function SVGGraphics_setLineJoin(style) { + this.current.lineJoin = LINE_JOIN_STYLES[style]; + }, + setMiterLimit: function SVGGraphics_setMiterLimit(limit) { + this.current.miterLimit = limit; + }, + setStrokeRGBColor: function SVGGraphics_setStrokeRGBColor(r, g, b) { + var color = Util.makeCssRgb(r, g, b); + this.current.strokeColor = color; + }, + setFillRGBColor: function SVGGraphics_setFillRGBColor(r, g, b) { + var color = Util.makeCssRgb(r, g, b); + this.current.fillColor = color; + this.current.tspan = document.createElementNS(NS, 'svg:tspan'); + this.current.xcoords = []; + }, + setDash: function SVGGraphics_setDash(dashArray, dashPhase) { + this.current.dashArray = dashArray; + this.current.dashPhase = dashPhase; + }, + + constructPath: function SVGGraphics_constructPath(ops, args) { + var current = this.current; + var x = current.x, y = current.y; + current.path = document.createElementNS(NS, 'svg:path'); + var d = []; + var opLength = ops.length; + + for (var i = 0, j = 0; i < opLength; i++) { + switch (ops[i] | 0) { + case OPS.rectangle: + x = args[j++]; + y = args[j++]; + var width = args[j++]; + var height = args[j++]; + var xw = x + width; + var yh = y + height; + d.push('M', pf(x), pf(y), 'L', pf(xw) , pf(y), 'L', pf(xw), pf(yh), + 'L', pf(x), pf(yh), 'Z'); + break; + case OPS.moveTo: + x = args[j++]; + y = args[j++]; + d.push('M', pf(x), pf(y)); + break; + case OPS.lineTo: + x = args[j++]; + y = args[j++]; + d.push('L', pf(x) , pf(y)); + break; + case OPS.curveTo: + x = args[j + 4]; + y = args[j + 5]; + d.push('C', pf(args[j]), pf(args[j + 1]), pf(args[j + 2]), + pf(args[j + 3]), pf(x), pf(y)); + j += 6; + break; + case OPS.curveTo2: + x = args[j + 2]; + y = args[j + 3]; + d.push('C', pf(x), pf(y), pf(args[j]), pf(args[j + 1]), + pf(args[j + 2]), pf(args[j + 3])); + j += 4; + break; + case OPS.curveTo3: + x = args[j + 2]; + y = args[j + 3]; + d.push('C', pf(args[j]), pf(args[j + 1]), pf(x), pf(y), + pf(x), pf(y)); + j += 4; + break; + case OPS.closePath: + d.push('Z'); + break; + } + } + current.path.setAttributeNS(null, 'd', d.join(' ')); + current.path.setAttributeNS(null, 'stroke-miterlimit', + pf(current.miterLimit)); + current.path.setAttributeNS(null, 'stroke-linecap', current.lineCap); + current.path.setAttributeNS(null, 'stroke-linejoin', current.lineJoin); + current.path.setAttributeNS(null, 'stroke-width', + pf(current.lineWidth) + 'px'); + current.path.setAttributeNS(null, 'stroke-dasharray', + current.dashArray.map(pf).join(' ')); + current.path.setAttributeNS(null, 'stroke-dashoffset', + pf(current.dashPhase) + 'px'); + current.path.setAttributeNS(null, 'fill', 'none'); + + this.tgrp.appendChild(current.path); + if (current.pendingClip) { + this.cgrp.appendChild(this.tgrp); + this.pgrp.appendChild(this.cgrp); + } else { + this.pgrp.appendChild(this.tgrp); + } + // Saving a reference in current.element so that it can be addressed + // in 'fill' and 'stroke' + current.element = current.path; + current.setCurrentPoint(x, y); + }, + + endPath: function SVGGraphics_endPath() { + var current = this.current; + if (current.pendingClip) { + this.cgrp.appendChild(this.tgrp); + this.pgrp.appendChild(this.cgrp); + } else { + this.pgrp.appendChild(this.tgrp); + } + this.tgrp = document.createElementNS(NS, 'svg:g'); + this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix)); + }, + + clip: function SVGGraphics_clip(type) { + var current = this.current; + // Add current path to clipping path + current.clipId = 'clippath' + clipCount; + clipCount++; + this.clippath = document.createElementNS(NS, 'svg:clipPath'); + this.clippath.setAttributeNS(null, 'id', current.clipId); + var clipElement = current.element.cloneNode(); + if (type === 'evenodd') { + clipElement.setAttributeNS(null, 'clip-rule', 'evenodd'); + } else { + clipElement.setAttributeNS(null, 'clip-rule', 'nonzero'); + } + this.clippath.setAttributeNS(null, 'transform', pm(this.transformMatrix)); + this.clippath.appendChild(clipElement); + this.defs.appendChild(this.clippath); + + // Create a new group with that attribute + current.pendingClip = true; + this.cgrp = document.createElementNS(NS, 'svg:g'); + this.cgrp.setAttributeNS(null, 'clip-path', + 'url(#' + current.clipId + ')'); + this.pgrp.appendChild(this.cgrp); + }, + + closePath: function SVGGraphics_closePath() { + var current = this.current; + var d = current.path.getAttributeNS(null, 'd'); + d += 'Z'; + current.path.setAttributeNS(null, 'd', d); + }, + + setLeading: function SVGGraphics_setLeading(leading) { + this.current.leading = -leading; + }, + + setTextRise: function SVGGraphics_setTextRise(textRise) { + this.current.textRise = textRise; + }, + + setHScale: function SVGGraphics_setHScale(scale) { + this.current.textHScale = scale / 100; + }, + + setGState: function SVGGraphics_setGState(states) { + for (var i = 0, ii = states.length; i < ii; i++) { + var state = states[i]; + var key = state[0]; + var value = state[1]; + + switch (key) { + case 'LW': + this.setLineWidth(value); + break; + case 'LC': + this.setLineCap(value); + break; + case 'LJ': + this.setLineJoin(value); + break; + case 'ML': + this.setMiterLimit(value); + break; + case 'D': + this.setDash(value[0], value[1]); + break; + case 'RI': + break; + case 'FL': + break; + case 'Font': + this.setFont(value); + break; + case 'CA': + break; + case 'ca': + break; + case 'BM': + break; + case 'SMask': + break; + } + } + }, + + fill: function SVGGraphics_fill() { + var current = this.current; + current.element.setAttributeNS(null, 'fill', current.fillColor); + }, + + stroke: function SVGGraphics_stroke() { + var current = this.current; + current.element.setAttributeNS(null, 'stroke', current.strokeColor); + current.element.setAttributeNS(null, 'fill', 'none'); + }, + + eoFill: function SVGGraphics_eoFill() { + var current = this.current; + current.element.setAttributeNS(null, 'fill', current.fillColor); + current.element.setAttributeNS(null, 'fill-rule', 'evenodd'); + }, + + fillStroke: function SVGGraphics_fillStroke() { + // Order is important since stroke wants fill to be none. + // First stroke, then if fill needed, it will be overwritten. + this.stroke(); + this.fill(); + }, + + eoFillStroke: function SVGGraphics_eoFillStroke() { + this.current.element.setAttributeNS(null, 'fill-rule', 'evenodd'); + this.fillStroke(); + }, + + closeStroke: function SVGGraphics_closeStroke() { + this.closePath(); + this.stroke(); + }, + + closeFillStroke: function SVGGraphics_closeFillStroke() { + this.closePath(); + this.fillStroke(); + }, + + paintSolidColorImageMask: + function SVGGraphics_paintSolidColorImageMask() { + var current = this.current; + var rect = document.createElementNS(NS, 'svg:rect'); + rect.setAttributeNS(null, 'x', '0'); + rect.setAttributeNS(null, 'y', '0'); + rect.setAttributeNS(null, 'width', '1px'); + rect.setAttributeNS(null, 'height', '1px'); + rect.setAttributeNS(null, 'fill', current.fillColor); + this.tgrp.appendChild(rect); + }, + + paintJpegXObject: function SVGGraphics_paintJpegXObject(objId, w, h) { + var current = this.current; + var imgObj = this.objs.get(objId); + var imgEl = document.createElementNS(NS, 'svg:image'); + imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgObj.src); + imgEl.setAttributeNS(null, 'width', imgObj.width + 'px'); + imgEl.setAttributeNS(null, 'height', imgObj.height + 'px'); + imgEl.setAttributeNS(null, 'x', '0'); + imgEl.setAttributeNS(null, 'y', pf(-h)); + imgEl.setAttributeNS(null, 'transform', + 'scale(' + pf(1 / w) + ' ' + pf(-1 / h) + ')'); + + this.tgrp.appendChild(imgEl); + if (current.pendingClip) { + this.cgrp.appendChild(this.tgrp); + this.pgrp.appendChild(this.cgrp); + } else { + this.pgrp.appendChild(this.tgrp); + } + }, + + paintImageXObject: function SVGGraphics_paintImageXObject(objId) { + var imgData = this.objs.get(objId); + if (!imgData) { + warn('Dependent image isn\'t ready yet'); + return; + } + this.paintInlineImageXObject(imgData); + }, + + paintInlineImageXObject: + function SVGGraphics_paintInlineImageXObject(imgData, mask) { + var current = this.current; + var width = imgData.width; + var height = imgData.height; + + var imgSrc = convertImgDataToPng(imgData); + var cliprect = document.createElementNS(NS, 'svg:rect'); + cliprect.setAttributeNS(null, 'x', '0'); + cliprect.setAttributeNS(null, 'y', '0'); + cliprect.setAttributeNS(null, 'width', pf(width)); + cliprect.setAttributeNS(null, 'height', pf(height)); + current.element = cliprect; + this.clip('nonzero'); + var imgEl = document.createElementNS(NS, 'svg:image'); + imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgSrc); + imgEl.setAttributeNS(null, 'x', '0'); + imgEl.setAttributeNS(null, 'y', pf(-height)); + imgEl.setAttributeNS(null, 'width', pf(width) + 'px'); + imgEl.setAttributeNS(null, 'height', pf(height) + 'px'); + imgEl.setAttributeNS(null, 'transform', + 'scale(' + pf(1 / width) + ' ' + + pf(-1 / height) + ')'); + if (mask) { + mask.appendChild(imgEl); + } else { + this.tgrp.appendChild(imgEl); + } + if (current.pendingClip) { + this.cgrp.appendChild(this.tgrp); + this.pgrp.appendChild(this.cgrp); + } else { + this.pgrp.appendChild(this.tgrp); + } + }, + + paintImageMaskXObject: + function SVGGraphics_paintImageMaskXObject(imgData) { + var current = this.current; + var width = imgData.width; + var height = imgData.height; + var fillColor = current.fillColor; + + current.maskId = 'mask' + maskCount++; + var mask = document.createElementNS(NS, 'svg:mask'); + mask.setAttributeNS(null, 'id', current.maskId); + + var rect = document.createElementNS(NS, 'svg:rect'); + rect.setAttributeNS(null, 'x', '0'); + rect.setAttributeNS(null, 'y', '0'); + rect.setAttributeNS(null, 'width', pf(width)); + rect.setAttributeNS(null, 'height', pf(height)); + rect.setAttributeNS(null, 'fill', fillColor); + rect.setAttributeNS(null, 'mask', 'url(#' + current.maskId +')'); + this.defs.appendChild(mask); + this.tgrp.appendChild(rect); + + this.paintInlineImageXObject(imgData, mask); + }, + + paintFormXObjectBegin: + function SVGGraphics_paintFormXObjectBegin(matrix, bbox) { + this.save(); + + if (isArray(matrix) && matrix.length === 6) { + this.transform(matrix[0], matrix[1], matrix[2], + matrix[3], matrix[4], matrix[5]); + } + + if (isArray(bbox) && bbox.length === 4) { + var width = bbox[2] - bbox[0]; + var height = bbox[3] - bbox[1]; + + var cliprect = document.createElementNS(NS, 'svg:rect'); + cliprect.setAttributeNS(null, 'x', bbox[0]); + cliprect.setAttributeNS(null, 'y', bbox[1]); + cliprect.setAttributeNS(null, 'width', pf(width)); + cliprect.setAttributeNS(null, 'height', pf(height)); + this.current.element = cliprect; + this.clip('nonzero'); + this.endPath(); + } + }, + + paintFormXObjectEnd: + function SVGGraphics_paintFormXObjectEnd() { + this.restore(); + } + }; + return SVGGraphics; +})(); + +PDFJS.SVGGraphics = SVGGraphics; +//#endif + + +}).call((typeof window === 'undefined') ? this : window); + +if (!PDFJS.workerSrc && typeof document !== 'undefined') { + // workerSrc is not set -- using last script url to define default location + PDFJS.workerSrc = (function () { + 'use strict'; + var scriptTagContainer = document.body || + document.getElementsByTagName('head')[0]; + var pdfjsSrc = scriptTagContainer.lastChild.src; + return pdfjsSrc && pdfjsSrc.replace(/\.js$/i, '.worker.js'); + })(); +} + diff --git a/ViewerJS/pdf.worker.js b/ViewerJS/pdf.worker.js new file mode 100644 index 0000000..c17192e --- /dev/null +++ b/ViewerJS/pdf.worker.js @@ -0,0 +1,39353 @@ +/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ +/* Copyright 2012 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/*jshint globalstrict: false */ +/* globals PDFJS */ + +// Initializing PDFJS global object (if still undefined) +if (typeof PDFJS === 'undefined') { + (typeof window !== 'undefined' ? window : this).PDFJS = {}; +} + +PDFJS.version = '1.1.114'; +PDFJS.build = '3fd44fd'; + +(function pdfjsWrapper() { + // Use strict in our context only - users might not want it + 'use strict'; + +/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ +/* Copyright 2012 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* globals Cmd, ColorSpace, Dict, MozBlobBuilder, Name, PDFJS, Ref, URL, + Promise */ + +'use strict'; + +var globalScope = (typeof window === 'undefined') ? this : window; + +var isWorker = (typeof window === 'undefined'); + +var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0]; + +var TextRenderingMode = { + FILL: 0, + STROKE: 1, + FILL_STROKE: 2, + INVISIBLE: 3, + FILL_ADD_TO_PATH: 4, + STROKE_ADD_TO_PATH: 5, + FILL_STROKE_ADD_TO_PATH: 6, + ADD_TO_PATH: 7, + FILL_STROKE_MASK: 3, + ADD_TO_PATH_FLAG: 4 +}; + +var ImageKind = { + GRAYSCALE_1BPP: 1, + RGB_24BPP: 2, + RGBA_32BPP: 3 +}; + +var AnnotationType = { + WIDGET: 1, + TEXT: 2, + LINK: 3 +}; + +var StreamType = { + UNKNOWN: 0, + FLATE: 1, + LZW: 2, + DCT: 3, + JPX: 4, + JBIG: 5, + A85: 6, + AHX: 7, + CCF: 8, + RL: 9 +}; + +var FontType = { + UNKNOWN: 0, + TYPE1: 1, + TYPE1C: 2, + CIDFONTTYPE0: 3, + CIDFONTTYPE0C: 4, + TRUETYPE: 5, + CIDFONTTYPE2: 6, + TYPE3: 7, + OPENTYPE: 8, + TYPE0: 9, + MMTYPE1: 10 +}; + +// The global PDFJS object exposes the API +// In production, it will be declared outside a global wrapper +// In development, it will be declared here +if (!globalScope.PDFJS) { + globalScope.PDFJS = {}; +} + +globalScope.PDFJS.pdfBug = false; + +PDFJS.VERBOSITY_LEVELS = { + errors: 0, + warnings: 1, + infos: 5 +}; + +// All the possible operations for an operator list. +var OPS = PDFJS.OPS = { + // Intentionally start from 1 so it is easy to spot bad operators that will be + // 0's. + dependency: 1, + setLineWidth: 2, + setLineCap: 3, + setLineJoin: 4, + setMiterLimit: 5, + setDash: 6, + setRenderingIntent: 7, + setFlatness: 8, + setGState: 9, + save: 10, + restore: 11, + transform: 12, + moveTo: 13, + lineTo: 14, + curveTo: 15, + curveTo2: 16, + curveTo3: 17, + closePath: 18, + rectangle: 19, + stroke: 20, + closeStroke: 21, + fill: 22, + eoFill: 23, + fillStroke: 24, + eoFillStroke: 25, + closeFillStroke: 26, + closeEOFillStroke: 27, + endPath: 28, + clip: 29, + eoClip: 30, + beginText: 31, + endText: 32, + setCharSpacing: 33, + setWordSpacing: 34, + setHScale: 35, + setLeading: 36, + setFont: 37, + setTextRenderingMode: 38, + setTextRise: 39, + moveText: 40, + setLeadingMoveText: 41, + setTextMatrix: 42, + nextLine: 43, + showText: 44, + showSpacedText: 45, + nextLineShowText: 46, + nextLineSetSpacingShowText: 47, + setCharWidth: 48, + setCharWidthAndBounds: 49, + setStrokeColorSpace: 50, + setFillColorSpace: 51, + setStrokeColor: 52, + setStrokeColorN: 53, + setFillColor: 54, + setFillColorN: 55, + setStrokeGray: 56, + setFillGray: 57, + setStrokeRGBColor: 58, + setFillRGBColor: 59, + setStrokeCMYKColor: 60, + setFillCMYKColor: 61, + shadingFill: 62, + beginInlineImage: 63, + beginImageData: 64, + endInlineImage: 65, + paintXObject: 66, + markPoint: 67, + markPointProps: 68, + beginMarkedContent: 69, + beginMarkedContentProps: 70, + endMarkedContent: 71, + beginCompat: 72, + endCompat: 73, + paintFormXObjectBegin: 74, + paintFormXObjectEnd: 75, + beginGroup: 76, + endGroup: 77, + beginAnnotations: 78, + endAnnotations: 79, + beginAnnotation: 80, + endAnnotation: 81, + paintJpegXObject: 82, + paintImageMaskXObject: 83, + paintImageMaskXObjectGroup: 84, + paintImageXObject: 85, + paintInlineImageXObject: 86, + paintInlineImageXObjectGroup: 87, + paintImageXObjectRepeat: 88, + paintImageMaskXObjectRepeat: 89, + paintSolidColorImageMask: 90, + constructPath: 91 +}; + +// A notice for devs. These are good for things that are helpful to devs, such +// as warning that Workers were disabled, which is important to devs but not +// end users. +function info(msg) { + if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.infos) { + console.log('Info: ' + msg); + } +} + +// Non-fatal warnings. +function warn(msg) { + if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.warnings) { + console.log('Warning: ' + msg); + } +} + +// Fatal errors that should trigger the fallback UI and halt execution by +// throwing an exception. +function error(msg) { + if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.errors) { + console.log('Error: ' + msg); + console.log(backtrace()); + } + UnsupportedManager.notify(UNSUPPORTED_FEATURES.unknown); + throw new Error(msg); +} + +function backtrace() { + try { + throw new Error(); + } catch (e) { + return e.stack ? e.stack.split('\n').slice(2).join('\n') : ''; + } +} + +function assert(cond, msg) { + if (!cond) { + error(msg); + } +} + +var UNSUPPORTED_FEATURES = PDFJS.UNSUPPORTED_FEATURES = { + unknown: 'unknown', + forms: 'forms', + javaScript: 'javaScript', + smask: 'smask', + shadingPattern: 'shadingPattern', + font: 'font' +}; + +var UnsupportedManager = PDFJS.UnsupportedManager = + (function UnsupportedManagerClosure() { + var listeners = []; + return { + listen: function (cb) { + listeners.push(cb); + }, + notify: function (featureId) { + warn('Unsupported feature "' + featureId + '"'); + for (var i = 0, ii = listeners.length; i < ii; i++) { + listeners[i](featureId); + } + } + }; +})(); + +// Combines two URLs. The baseUrl shall be absolute URL. If the url is an +// absolute URL, it will be returned as is. +function combineUrl(baseUrl, url) { + if (!url) { + return baseUrl; + } + if (/^[a-z][a-z0-9+\-.]*:/i.test(url)) { + return url; + } + var i; + if (url.charAt(0) === '/') { + // absolute path + i = baseUrl.indexOf('://'); + if (url.charAt(1) === '/') { + ++i; + } else { + i = baseUrl.indexOf('/', i + 3); + } + return baseUrl.substring(0, i) + url; + } else { + // relative path + var pathLength = baseUrl.length; + i = baseUrl.lastIndexOf('#'); + pathLength = i >= 0 ? i : pathLength; + i = baseUrl.lastIndexOf('?', pathLength); + pathLength = i >= 0 ? i : pathLength; + var prefixLength = baseUrl.lastIndexOf('/', pathLength); + return baseUrl.substring(0, prefixLength + 1) + url; + } +} + +// Validates if URL is safe and allowed, e.g. to avoid XSS. +function isValidUrl(url, allowRelative) { + if (!url) { + return false; + } + // RFC 3986 (http://tools.ietf.org/html/rfc3986#section-3.1) + // scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) + var protocol = /^[a-z][a-z0-9+\-.]*(?=:)/i.exec(url); + if (!protocol) { + return allowRelative; + } + protocol = protocol[0].toLowerCase(); + switch (protocol) { + case 'http': + case 'https': + case 'ftp': + case 'mailto': + case 'tel': + return true; + default: + return false; + } +} +PDFJS.isValidUrl = isValidUrl; + +function shadow(obj, prop, value) { + Object.defineProperty(obj, prop, { value: value, + enumerable: true, + configurable: true, + writable: false }); + return value; +} +PDFJS.shadow = shadow; + +var PasswordResponses = PDFJS.PasswordResponses = { + NEED_PASSWORD: 1, + INCORRECT_PASSWORD: 2 +}; + +var PasswordException = (function PasswordExceptionClosure() { + function PasswordException(msg, code) { + this.name = 'PasswordException'; + this.message = msg; + this.code = code; + } + + PasswordException.prototype = new Error(); + PasswordException.constructor = PasswordException; + + return PasswordException; +})(); +PDFJS.PasswordException = PasswordException; + +var UnknownErrorException = (function UnknownErrorExceptionClosure() { + function UnknownErrorException(msg, details) { + this.name = 'UnknownErrorException'; + this.message = msg; + this.details = details; + } + + UnknownErrorException.prototype = new Error(); + UnknownErrorException.constructor = UnknownErrorException; + + return UnknownErrorException; +})(); +PDFJS.UnknownErrorException = UnknownErrorException; + +var InvalidPDFException = (function InvalidPDFExceptionClosure() { + function InvalidPDFException(msg) { + this.name = 'InvalidPDFException'; + this.message = msg; + } + + InvalidPDFException.prototype = new Error(); + InvalidPDFException.constructor = InvalidPDFException; + + return InvalidPDFException; +})(); +PDFJS.InvalidPDFException = InvalidPDFException; + +var MissingPDFException = (function MissingPDFExceptionClosure() { + function MissingPDFException(msg) { + this.name = 'MissingPDFException'; + this.message = msg; + } + + MissingPDFException.prototype = new Error(); + MissingPDFException.constructor = MissingPDFException; + + return MissingPDFException; +})(); +PDFJS.MissingPDFException = MissingPDFException; + +var UnexpectedResponseException = + (function UnexpectedResponseExceptionClosure() { + function UnexpectedResponseException(msg, status) { + this.name = 'UnexpectedResponseException'; + this.message = msg; + this.status = status; + } + + UnexpectedResponseException.prototype = new Error(); + UnexpectedResponseException.constructor = UnexpectedResponseException; + + return UnexpectedResponseException; +})(); +PDFJS.UnexpectedResponseException = UnexpectedResponseException; + +var NotImplementedException = (function NotImplementedExceptionClosure() { + function NotImplementedException(msg) { + this.message = msg; + } + + NotImplementedException.prototype = new Error(); + NotImplementedException.prototype.name = 'NotImplementedException'; + NotImplementedException.constructor = NotImplementedException; + + return NotImplementedException; +})(); + +var MissingDataException = (function MissingDataExceptionClosure() { + function MissingDataException(begin, end) { + this.begin = begin; + this.end = end; + this.message = 'Missing data [' + begin + ', ' + end + ')'; + } + + MissingDataException.prototype = new Error(); + MissingDataException.prototype.name = 'MissingDataException'; + MissingDataException.constructor = MissingDataException; + + return MissingDataException; +})(); + +var XRefParseException = (function XRefParseExceptionClosure() { + function XRefParseException(msg) { + this.message = msg; + } + + XRefParseException.prototype = new Error(); + XRefParseException.prototype.name = 'XRefParseException'; + XRefParseException.constructor = XRefParseException; + + return XRefParseException; +})(); + + +function bytesToString(bytes) { + assert(bytes !== null && typeof bytes === 'object' && + bytes.length !== undefined, 'Invalid argument for bytesToString'); + var length = bytes.length; + var MAX_ARGUMENT_COUNT = 8192; + if (length < MAX_ARGUMENT_COUNT) { + return String.fromCharCode.apply(null, bytes); + } + var strBuf = []; + for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) { + var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length); + var chunk = bytes.subarray(i, chunkEnd); + strBuf.push(String.fromCharCode.apply(null, chunk)); + } + return strBuf.join(''); +} + +function stringToBytes(str) { + assert(typeof str === 'string', 'Invalid argument for stringToBytes'); + var length = str.length; + var bytes = new Uint8Array(length); + for (var i = 0; i < length; ++i) { + bytes[i] = str.charCodeAt(i) & 0xFF; + } + return bytes; +} + +function string32(value) { + return String.fromCharCode((value >> 24) & 0xff, (value >> 16) & 0xff, + (value >> 8) & 0xff, value & 0xff); +} + +function log2(x) { + var n = 1, i = 0; + while (x > n) { + n <<= 1; + i++; + } + return i; +} + +function readInt8(data, start) { + return (data[start] << 24) >> 24; +} + +function readUint16(data, offset) { + return (data[offset] << 8) | data[offset + 1]; +} + +function readUint32(data, offset) { + return ((data[offset] << 24) | (data[offset + 1] << 16) | + (data[offset + 2] << 8) | data[offset + 3]) >>> 0; +} + +// Lazy test the endianness of the platform +// NOTE: This will be 'true' for simulated TypedArrays +function isLittleEndian() { + var buffer8 = new Uint8Array(2); + buffer8[0] = 1; + var buffer16 = new Uint16Array(buffer8.buffer); + return (buffer16[0] === 1); +} + +Object.defineProperty(PDFJS, 'isLittleEndian', { + configurable: true, + get: function PDFJS_isLittleEndian() { + return shadow(PDFJS, 'isLittleEndian', isLittleEndian()); + } +}); + +//#if !(FIREFOX || MOZCENTRAL || B2G || CHROME) +//// Lazy test if the userAgant support CanvasTypedArrays +function hasCanvasTypedArrays() { + var canvas = document.createElement('canvas'); + canvas.width = canvas.height = 1; + var ctx = canvas.getContext('2d'); + var imageData = ctx.createImageData(1, 1); + return (typeof imageData.data.buffer !== 'undefined'); +} + +Object.defineProperty(PDFJS, 'hasCanvasTypedArrays', { + configurable: true, + get: function PDFJS_hasCanvasTypedArrays() { + return shadow(PDFJS, 'hasCanvasTypedArrays', hasCanvasTypedArrays()); + } +}); + +var Uint32ArrayView = (function Uint32ArrayViewClosure() { + + function Uint32ArrayView(buffer, length) { + this.buffer = buffer; + this.byteLength = buffer.length; + this.length = length === undefined ? (this.byteLength >> 2) : length; + ensureUint32ArrayViewProps(this.length); + } + Uint32ArrayView.prototype = Object.create(null); + + var uint32ArrayViewSetters = 0; + function createUint32ArrayProp(index) { + return { + get: function () { + var buffer = this.buffer, offset = index << 2; + return (buffer[offset] | (buffer[offset + 1] << 8) | + (buffer[offset + 2] << 16) | (buffer[offset + 3] << 24)) >>> 0; + }, + set: function (value) { + var buffer = this.buffer, offset = index << 2; + buffer[offset] = value & 255; + buffer[offset + 1] = (value >> 8) & 255; + buffer[offset + 2] = (value >> 16) & 255; + buffer[offset + 3] = (value >>> 24) & 255; + } + }; + } + + function ensureUint32ArrayViewProps(length) { + while (uint32ArrayViewSetters < length) { + Object.defineProperty(Uint32ArrayView.prototype, + uint32ArrayViewSetters, + createUint32ArrayProp(uint32ArrayViewSetters)); + uint32ArrayViewSetters++; + } + } + + return Uint32ArrayView; +})(); +//#else +//PDFJS.hasCanvasTypedArrays = true; +//#endif + +var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0]; + +var Util = PDFJS.Util = (function UtilClosure() { + function Util() {} + + var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')']; + + // makeCssRgb() can be called thousands of times. Using |rgbBuf| avoids + // creating many intermediate strings. + Util.makeCssRgb = function Util_makeCssRgb(r, g, b) { + rgbBuf[1] = r; + rgbBuf[3] = g; + rgbBuf[5] = b; + return rgbBuf.join(''); + }; + + // Concatenates two transformation matrices together and returns the result. + Util.transform = function Util_transform(m1, m2) { + return [ + m1[0] * m2[0] + m1[2] * m2[1], + m1[1] * m2[0] + m1[3] * m2[1], + m1[0] * m2[2] + m1[2] * m2[3], + m1[1] * m2[2] + m1[3] * m2[3], + m1[0] * m2[4] + m1[2] * m2[5] + m1[4], + m1[1] * m2[4] + m1[3] * m2[5] + m1[5] + ]; + }; + + // For 2d affine transforms + Util.applyTransform = function Util_applyTransform(p, m) { + var xt = p[0] * m[0] + p[1] * m[2] + m[4]; + var yt = p[0] * m[1] + p[1] * m[3] + m[5]; + return [xt, yt]; + }; + + Util.applyInverseTransform = function Util_applyInverseTransform(p, m) { + var d = m[0] * m[3] - m[1] * m[2]; + var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d; + var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d; + return [xt, yt]; + }; + + // Applies the transform to the rectangle and finds the minimum axially + // aligned bounding box. + Util.getAxialAlignedBoundingBox = + function Util_getAxialAlignedBoundingBox(r, m) { + + var p1 = Util.applyTransform(r, m); + var p2 = Util.applyTransform(r.slice(2, 4), m); + var p3 = Util.applyTransform([r[0], r[3]], m); + var p4 = Util.applyTransform([r[2], r[1]], m); + return [ + Math.min(p1[0], p2[0], p3[0], p4[0]), + Math.min(p1[1], p2[1], p3[1], p4[1]), + Math.max(p1[0], p2[0], p3[0], p4[0]), + Math.max(p1[1], p2[1], p3[1], p4[1]) + ]; + }; + + Util.inverseTransform = function Util_inverseTransform(m) { + var d = m[0] * m[3] - m[1] * m[2]; + return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d, + (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d]; + }; + + // Apply a generic 3d matrix M on a 3-vector v: + // | a b c | | X | + // | d e f | x | Y | + // | g h i | | Z | + // M is assumed to be serialized as [a,b,c,d,e,f,g,h,i], + // with v as [X,Y,Z] + Util.apply3dTransform = function Util_apply3dTransform(m, v) { + return [ + m[0] * v[0] + m[1] * v[1] + m[2] * v[2], + m[3] * v[0] + m[4] * v[1] + m[5] * v[2], + m[6] * v[0] + m[7] * v[1] + m[8] * v[2] + ]; + }; + + // This calculation uses Singular Value Decomposition. + // The SVD can be represented with formula A = USV. We are interested in the + // matrix S here because it represents the scale values. + Util.singularValueDecompose2dScale = + function Util_singularValueDecompose2dScale(m) { + + var transpose = [m[0], m[2], m[1], m[3]]; + + // Multiply matrix m with its transpose. + var a = m[0] * transpose[0] + m[1] * transpose[2]; + var b = m[0] * transpose[1] + m[1] * transpose[3]; + var c = m[2] * transpose[0] + m[3] * transpose[2]; + var d = m[2] * transpose[1] + m[3] * transpose[3]; + + // Solve the second degree polynomial to get roots. + var first = (a + d) / 2; + var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2; + var sx = first + second || 1; + var sy = first - second || 1; + + // Scale values are the square roots of the eigenvalues. + return [Math.sqrt(sx), Math.sqrt(sy)]; + }; + + // Normalize rectangle rect=[x1, y1, x2, y2] so that (x1,y1) < (x2,y2) + // For coordinate systems whose origin lies in the bottom-left, this + // means normalization to (BL,TR) ordering. For systems with origin in the + // top-left, this means (TL,BR) ordering. + Util.normalizeRect = function Util_normalizeRect(rect) { + var r = rect.slice(0); // clone rect + if (rect[0] > rect[2]) { + r[0] = rect[2]; + r[2] = rect[0]; + } + if (rect[1] > rect[3]) { + r[1] = rect[3]; + r[3] = rect[1]; + } + return r; + }; + + // Returns a rectangle [x1, y1, x2, y2] corresponding to the + // intersection of rect1 and rect2. If no intersection, returns 'false' + // The rectangle coordinates of rect1, rect2 should be [x1, y1, x2, y2] + Util.intersect = function Util_intersect(rect1, rect2) { + function compare(a, b) { + return a - b; + } + + // Order points along the axes + var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare), + orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare), + result = []; + + rect1 = Util.normalizeRect(rect1); + rect2 = Util.normalizeRect(rect2); + + // X: first and second points belong to different rectangles? + if ((orderedX[0] === rect1[0] && orderedX[1] === rect2[0]) || + (orderedX[0] === rect2[0] && orderedX[1] === rect1[0])) { + // Intersection must be between second and third points + result[0] = orderedX[1]; + result[2] = orderedX[2]; + } else { + return false; + } + + // Y: first and second points belong to different rectangles? + if ((orderedY[0] === rect1[1] && orderedY[1] === rect2[1]) || + (orderedY[0] === rect2[1] && orderedY[1] === rect1[1])) { + // Intersection must be between second and third points + result[1] = orderedY[1]; + result[3] = orderedY[2]; + } else { + return false; + } + + return result; + }; + + Util.sign = function Util_sign(num) { + return num < 0 ? -1 : 1; + }; + + Util.appendToArray = function Util_appendToArray(arr1, arr2) { + Array.prototype.push.apply(arr1, arr2); + }; + + Util.prependToArray = function Util_prependToArray(arr1, arr2) { + Array.prototype.unshift.apply(arr1, arr2); + }; + + Util.extendObj = function extendObj(obj1, obj2) { + for (var key in obj2) { + obj1[key] = obj2[key]; + } + }; + + Util.getInheritableProperty = function Util_getInheritableProperty(dict, + name) { + while (dict && !dict.has(name)) { + dict = dict.get('Parent'); + } + if (!dict) { + return null; + } + return dict.get(name); + }; + + Util.inherit = function Util_inherit(sub, base, prototype) { + sub.prototype = Object.create(base.prototype); + sub.prototype.constructor = sub; + for (var prop in prototype) { + sub.prototype[prop] = prototype[prop]; + } + }; + + Util.loadScript = function Util_loadScript(src, callback) { + var script = document.createElement('script'); + var loaded = false; + script.setAttribute('src', src); + if (callback) { + script.onload = function() { + if (!loaded) { + callback(); + } + loaded = true; + }; + } + document.getElementsByTagName('head')[0].appendChild(script); + }; + + return Util; +})(); + +/** + * PDF page viewport created based on scale, rotation and offset. + * @class + * @alias PDFJS.PageViewport + */ +var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() { + /** + * @constructor + * @private + * @param viewBox {Array} xMin, yMin, xMax and yMax coordinates. + * @param scale {number} scale of the viewport. + * @param rotation {number} rotations of the viewport in degrees. + * @param offsetX {number} offset X + * @param offsetY {number} offset Y + * @param dontFlip {boolean} if true, axis Y will not be flipped. + */ + function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) { + this.viewBox = viewBox; + this.scale = scale; + this.rotation = rotation; + this.offsetX = offsetX; + this.offsetY = offsetY; + + // creating transform to convert pdf coordinate system to the normal + // canvas like coordinates taking in account scale and rotation + var centerX = (viewBox[2] + viewBox[0]) / 2; + var centerY = (viewBox[3] + viewBox[1]) / 2; + var rotateA, rotateB, rotateC, rotateD; + rotation = rotation % 360; + rotation = rotation < 0 ? rotation + 360 : rotation; + switch (rotation) { + case 180: + rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1; + break; + case 90: + rotateA = 0; rotateB = 1; rotateC = 1; rotateD = 0; + break; + case 270: + rotateA = 0; rotateB = -1; rotateC = -1; rotateD = 0; + break; + //case 0: + default: + rotateA = 1; rotateB = 0; rotateC = 0; rotateD = -1; + break; + } + + if (dontFlip) { + rotateC = -rotateC; rotateD = -rotateD; + } + + var offsetCanvasX, offsetCanvasY; + var width, height; + if (rotateA === 0) { + offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX; + offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY; + width = Math.abs(viewBox[3] - viewBox[1]) * scale; + height = Math.abs(viewBox[2] - viewBox[0]) * scale; + } else { + offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX; + offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY; + width = Math.abs(viewBox[2] - viewBox[0]) * scale; + height = Math.abs(viewBox[3] - viewBox[1]) * scale; + } + // creating transform for the following operations: + // translate(-centerX, -centerY), rotate and flip vertically, + // scale, and translate(offsetCanvasX, offsetCanvasY) + this.transform = [ + rotateA * scale, + rotateB * scale, + rotateC * scale, + rotateD * scale, + offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY, + offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY + ]; + + this.width = width; + this.height = height; + this.fontScale = scale; + } + PageViewport.prototype = /** @lends PDFJS.PageViewport.prototype */ { + /** + * Clones viewport with additional properties. + * @param args {Object} (optional) If specified, may contain the 'scale' or + * 'rotation' properties to override the corresponding properties in + * the cloned viewport. + * @returns {PDFJS.PageViewport} Cloned viewport. + */ + clone: function PageViewPort_clone(args) { + args = args || {}; + var scale = 'scale' in args ? args.scale : this.scale; + var rotation = 'rotation' in args ? args.rotation : this.rotation; + return new PageViewport(this.viewBox.slice(), scale, rotation, + this.offsetX, this.offsetY, args.dontFlip); + }, + /** + * Converts PDF point to the viewport coordinates. For examples, useful for + * converting PDF location into canvas pixel coordinates. + * @param x {number} X coordinate. + * @param y {number} Y coordinate. + * @returns {Object} Object that contains 'x' and 'y' properties of the + * point in the viewport coordinate space. + * @see {@link convertToPdfPoint} + * @see {@link convertToViewportRectangle} + */ + convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) { + return Util.applyTransform([x, y], this.transform); + }, + /** + * Converts PDF rectangle to the viewport coordinates. + * @param rect {Array} xMin, yMin, xMax and yMax coordinates. + * @returns {Array} Contains corresponding coordinates of the rectangle + * in the viewport coordinate space. + * @see {@link convertToViewportPoint} + */ + convertToViewportRectangle: + function PageViewport_convertToViewportRectangle(rect) { + var tl = Util.applyTransform([rect[0], rect[1]], this.transform); + var br = Util.applyTransform([rect[2], rect[3]], this.transform); + return [tl[0], tl[1], br[0], br[1]]; + }, + /** + * Converts viewport coordinates to the PDF location. For examples, useful + * for converting canvas pixel location into PDF one. + * @param x {number} X coordinate. + * @param y {number} Y coordinate. + * @returns {Object} Object that contains 'x' and 'y' properties of the + * point in the PDF coordinate space. + * @see {@link convertToViewportPoint} + */ + convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) { + return Util.applyInverseTransform([x, y], this.transform); + } + }; + return PageViewport; +})(); + +var PDFStringTranslateTable = [ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014, + 0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C, + 0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160, + 0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC +]; + +function stringToPDFString(str) { + var i, n = str.length, strBuf = []; + if (str[0] === '\xFE' && str[1] === '\xFF') { + // UTF16BE BOM + for (i = 2; i < n; i += 2) { + strBuf.push(String.fromCharCode( + (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1))); + } + } else { + for (i = 0; i < n; ++i) { + var code = PDFStringTranslateTable[str.charCodeAt(i)]; + strBuf.push(code ? String.fromCharCode(code) : str.charAt(i)); + } + } + return strBuf.join(''); +} + +function stringToUTF8String(str) { + return decodeURIComponent(escape(str)); +} + +function isEmptyObj(obj) { + for (var key in obj) { + return false; + } + return true; +} + +function isBool(v) { + return typeof v === 'boolean'; +} + +function isInt(v) { + return typeof v === 'number' && ((v | 0) === v); +} + +function isNum(v) { + return typeof v === 'number'; +} + +function isString(v) { + return typeof v === 'string'; +} + +function isName(v) { + return v instanceof Name; +} + +function isCmd(v, cmd) { + return v instanceof Cmd && (cmd === undefined || v.cmd === cmd); +} + +function isDict(v, type) { + if (!(v instanceof Dict)) { + return false; + } + if (!type) { + return true; + } + var dictType = v.get('Type'); + return isName(dictType) && dictType.name === type; +} + +function isArray(v) { + return v instanceof Array; +} + +function isStream(v) { + return typeof v === 'object' && v !== null && v.getBytes !== undefined; +} + +function isArrayBuffer(v) { + return typeof v === 'object' && v !== null && v.byteLength !== undefined; +} + +function isRef(v) { + return v instanceof Ref; +} + +/** + * Promise Capability object. + * + * @typedef {Object} PromiseCapability + * @property {Promise} promise - A promise object. + * @property {function} resolve - Fullfills the promise. + * @property {function} reject - Rejects the promise. + */ + +/** + * Creates a promise capability object. + * @alias PDFJS.createPromiseCapability + * + * @return {PromiseCapability} A capability object contains: + * - a Promise, resolve and reject methods. + */ +function createPromiseCapability() { + var capability = {}; + capability.promise = new Promise(function (resolve, reject) { + capability.resolve = resolve; + capability.reject = reject; + }); + return capability; +} + +PDFJS.createPromiseCapability = createPromiseCapability; + +/** + * Polyfill for Promises: + * The following promise implementation tries to generally implement the + * Promise/A+ spec. Some notable differences from other promise libaries are: + * - There currently isn't a seperate deferred and promise object. + * - Unhandled rejections eventually show an error if they aren't handled. + * + * Based off of the work in: + * https://bugzilla.mozilla.org/show_bug.cgi?id=810490 + */ +(function PromiseClosure() { + if (globalScope.Promise) { + // Promises existing in the DOM/Worker, checking presence of all/resolve + if (typeof globalScope.Promise.all !== 'function') { + globalScope.Promise.all = function (iterable) { + var count = 0, results = [], resolve, reject; + var promise = new globalScope.Promise(function (resolve_, reject_) { + resolve = resolve_; + reject = reject_; + }); + iterable.forEach(function (p, i) { + count++; + p.then(function (result) { + results[i] = result; + count--; + if (count === 0) { + resolve(results); + } + }, reject); + }); + if (count === 0) { + resolve(results); + } + return promise; + }; + } + if (typeof globalScope.Promise.resolve !== 'function') { + globalScope.Promise.resolve = function (value) { + return new globalScope.Promise(function (resolve) { resolve(value); }); + }; + } + if (typeof globalScope.Promise.reject !== 'function') { + globalScope.Promise.reject = function (reason) { + return new globalScope.Promise(function (resolve, reject) { + reject(reason); + }); + }; + } + if (typeof globalScope.Promise.prototype.catch !== 'function') { + globalScope.Promise.prototype.catch = function (onReject) { + return globalScope.Promise.prototype.then(undefined, onReject); + }; + } + return; + } +//#if !MOZCENTRAL + var STATUS_PENDING = 0; + var STATUS_RESOLVED = 1; + var STATUS_REJECTED = 2; + + // In an attempt to avoid silent exceptions, unhandled rejections are + // tracked and if they aren't handled in a certain amount of time an + // error is logged. + var REJECTION_TIMEOUT = 500; + + var HandlerManager = { + handlers: [], + running: false, + unhandledRejections: [], + pendingRejectionCheck: false, + + scheduleHandlers: function scheduleHandlers(promise) { + if (promise._status === STATUS_PENDING) { + return; + } + + this.handlers = this.handlers.concat(promise._handlers); + promise._handlers = []; + + if (this.running) { + return; + } + this.running = true; + + setTimeout(this.runHandlers.bind(this), 0); + }, + + runHandlers: function runHandlers() { + var RUN_TIMEOUT = 1; // ms + var timeoutAt = Date.now() + RUN_TIMEOUT; + while (this.handlers.length > 0) { + var handler = this.handlers.shift(); + + var nextStatus = handler.thisPromise._status; + var nextValue = handler.thisPromise._value; + + try { + if (nextStatus === STATUS_RESOLVED) { + if (typeof handler.onResolve === 'function') { + nextValue = handler.onResolve(nextValue); + } + } else if (typeof handler.onReject === 'function') { + nextValue = handler.onReject(nextValue); + nextStatus = STATUS_RESOLVED; + + if (handler.thisPromise._unhandledRejection) { + this.removeUnhandeledRejection(handler.thisPromise); + } + } + } catch (ex) { + nextStatus = STATUS_REJECTED; + nextValue = ex; + } + + handler.nextPromise._updateStatus(nextStatus, nextValue); + if (Date.now() >= timeoutAt) { + break; + } + } + + if (this.handlers.length > 0) { + setTimeout(this.runHandlers.bind(this), 0); + return; + } + + this.running = false; + }, + + addUnhandledRejection: function addUnhandledRejection(promise) { + this.unhandledRejections.push({ + promise: promise, + time: Date.now() + }); + this.scheduleRejectionCheck(); + }, + + removeUnhandeledRejection: function removeUnhandeledRejection(promise) { + promise._unhandledRejection = false; + for (var i = 0; i < this.unhandledRejections.length; i++) { + if (this.unhandledRejections[i].promise === promise) { + this.unhandledRejections.splice(i); + i--; + } + } + }, + + scheduleRejectionCheck: function scheduleRejectionCheck() { + if (this.pendingRejectionCheck) { + return; + } + this.pendingRejectionCheck = true; + setTimeout(function rejectionCheck() { + this.pendingRejectionCheck = false; + var now = Date.now(); + for (var i = 0; i < this.unhandledRejections.length; i++) { + if (now - this.unhandledRejections[i].time > REJECTION_TIMEOUT) { + var unhandled = this.unhandledRejections[i].promise._value; + var msg = 'Unhandled rejection: ' + unhandled; + if (unhandled.stack) { + msg += '\n' + unhandled.stack; + } + warn(msg); + this.unhandledRejections.splice(i); + i--; + } + } + if (this.unhandledRejections.length) { + this.scheduleRejectionCheck(); + } + }.bind(this), REJECTION_TIMEOUT); + } + }; + + function Promise(resolver) { + this._status = STATUS_PENDING; + this._handlers = []; + try { + resolver.call(this, this._resolve.bind(this), this._reject.bind(this)); + } catch (e) { + this._reject(e); + } + } + /** + * Builds a promise that is resolved when all the passed in promises are + * resolved. + * @param {array} array of data and/or promises to wait for. + * @return {Promise} New dependant promise. + */ + Promise.all = function Promise_all(promises) { + var resolveAll, rejectAll; + var deferred = new Promise(function (resolve, reject) { + resolveAll = resolve; + rejectAll = reject; + }); + var unresolved = promises.length; + var results = []; + if (unresolved === 0) { + resolveAll(results); + return deferred; + } + function reject(reason) { + if (deferred._status === STATUS_REJECTED) { + return; + } + results = []; + rejectAll(reason); + } + for (var i = 0, ii = promises.length; i < ii; ++i) { + var promise = promises[i]; + var resolve = (function(i) { + return function(value) { + if (deferred._status === STATUS_REJECTED) { + return; + } + results[i] = value; + unresolved--; + if (unresolved === 0) { + resolveAll(results); + } + }; + })(i); + if (Promise.isPromise(promise)) { + promise.then(resolve, reject); + } else { + resolve(promise); + } + } + return deferred; + }; + + /** + * Checks if the value is likely a promise (has a 'then' function). + * @return {boolean} true if value is thenable + */ + Promise.isPromise = function Promise_isPromise(value) { + return value && typeof value.then === 'function'; + }; + + /** + * Creates resolved promise + * @param value resolve value + * @returns {Promise} + */ + Promise.resolve = function Promise_resolve(value) { + return new Promise(function (resolve) { resolve(value); }); + }; + + /** + * Creates rejected promise + * @param reason rejection value + * @returns {Promise} + */ + Promise.reject = function Promise_reject(reason) { + return new Promise(function (resolve, reject) { reject(reason); }); + }; + + Promise.prototype = { + _status: null, + _value: null, + _handlers: null, + _unhandledRejection: null, + + _updateStatus: function Promise__updateStatus(status, value) { + if (this._status === STATUS_RESOLVED || + this._status === STATUS_REJECTED) { + return; + } + + if (status === STATUS_RESOLVED && + Promise.isPromise(value)) { + value.then(this._updateStatus.bind(this, STATUS_RESOLVED), + this._updateStatus.bind(this, STATUS_REJECTED)); + return; + } + + this._status = status; + this._value = value; + + if (status === STATUS_REJECTED && this._handlers.length === 0) { + this._unhandledRejection = true; + HandlerManager.addUnhandledRejection(this); + } + + HandlerManager.scheduleHandlers(this); + }, + + _resolve: function Promise_resolve(value) { + this._updateStatus(STATUS_RESOLVED, value); + }, + + _reject: function Promise_reject(reason) { + this._updateStatus(STATUS_REJECTED, reason); + }, + + then: function Promise_then(onResolve, onReject) { + var nextPromise = new Promise(function (resolve, reject) { + this.resolve = resolve; + this.reject = reject; + }); + this._handlers.push({ + thisPromise: this, + onResolve: onResolve, + onReject: onReject, + nextPromise: nextPromise + }); + HandlerManager.scheduleHandlers(this); + return nextPromise; + }, + + catch: function Promise_catch(onReject) { + return this.then(undefined, onReject); + } + }; + + globalScope.Promise = Promise; +//#else +//throw new Error('DOM Promise is not present'); +//#endif +})(); + +var StatTimer = (function StatTimerClosure() { + function rpad(str, pad, length) { + while (str.length < length) { + str += pad; + } + return str; + } + function StatTimer() { + this.started = {}; + this.times = []; + this.enabled = true; + } + StatTimer.prototype = { + time: function StatTimer_time(name) { + if (!this.enabled) { + return; + } + if (name in this.started) { + warn('Timer is already running for ' + name); + } + this.started[name] = Date.now(); + }, + timeEnd: function StatTimer_timeEnd(name) { + if (!this.enabled) { + return; + } + if (!(name in this.started)) { + warn('Timer has not been started for ' + name); + } + this.times.push({ + 'name': name, + 'start': this.started[name], + 'end': Date.now() + }); + // Remove timer from started so it can be called again. + delete this.started[name]; + }, + toString: function StatTimer_toString() { + var i, ii; + var times = this.times; + var out = ''; + // Find the longest name for padding purposes. + var longest = 0; + for (i = 0, ii = times.length; i < ii; ++i) { + var name = times[i]['name']; + if (name.length > longest) { + longest = name.length; + } + } + for (i = 0, ii = times.length; i < ii; ++i) { + var span = times[i]; + var duration = span.end - span.start; + out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n'; + } + return out; + } + }; + return StatTimer; +})(); + +PDFJS.createBlob = function createBlob(data, contentType) { + if (typeof Blob !== 'undefined') { + return new Blob([data], { type: contentType }); + } + // Blob builder is deprecated in FF14 and removed in FF18. + var bb = new MozBlobBuilder(); + bb.append(data); + return bb.getBlob(contentType); +}; + +PDFJS.createObjectURL = (function createObjectURLClosure() { + // Blob/createObjectURL is not available, falling back to data schema. + var digits = + 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; + + return function createObjectURL(data, contentType) { + if (!PDFJS.disableCreateObjectURL && + typeof URL !== 'undefined' && URL.createObjectURL) { + var blob = PDFJS.createBlob(data, contentType); + return URL.createObjectURL(blob); + } + + var buffer = 'data:' + contentType + ';base64,'; + for (var i = 0, ii = data.length; i < ii; i += 3) { + var b1 = data[i] & 0xFF; + var b2 = data[i + 1] & 0xFF; + var b3 = data[i + 2] & 0xFF; + var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4); + var d3 = i + 1 < ii ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64; + var d4 = i + 2 < ii ? (b3 & 0x3F) : 64; + buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4]; + } + return buffer; + }; +})(); + +function MessageHandler(name, comObj) { + this.name = name; + this.comObj = comObj; + this.callbackIndex = 1; + this.postMessageTransfers = true; + var callbacksCapabilities = this.callbacksCapabilities = {}; + var ah = this.actionHandler = {}; + + ah['console_log'] = [function ahConsoleLog(data) { + console.log.apply(console, data); + }]; + ah['console_error'] = [function ahConsoleError(data) { + console.error.apply(console, data); + }]; + ah['_unsupported_feature'] = [function ah_unsupportedFeature(data) { + UnsupportedManager.notify(data); + }]; + + comObj.onmessage = function messageHandlerComObjOnMessage(event) { + var data = event.data; + if (data.isReply) { + var callbackId = data.callbackId; + if (data.callbackId in callbacksCapabilities) { + var callback = callbacksCapabilities[callbackId]; + delete callbacksCapabilities[callbackId]; + if ('error' in data) { + callback.reject(data.error); + } else { + callback.resolve(data.data); + } + } else { + error('Cannot resolve callback ' + callbackId); + } + } else if (data.action in ah) { + var action = ah[data.action]; + if (data.callbackId) { + Promise.resolve().then(function () { + return action[0].call(action[1], data.data); + }).then(function (result) { + comObj.postMessage({ + isReply: true, + callbackId: data.callbackId, + data: result + }); + }, function (reason) { + comObj.postMessage({ + isReply: true, + callbackId: data.callbackId, + error: reason + }); + }); + } else { + action[0].call(action[1], data.data); + } + } else { + error('Unknown action from worker: ' + data.action); + } + }; +} + +MessageHandler.prototype = { + on: function messageHandlerOn(actionName, handler, scope) { + var ah = this.actionHandler; + if (ah[actionName]) { + error('There is already an actionName called "' + actionName + '"'); + } + ah[actionName] = [handler, scope]; + }, + /** + * Sends a message to the comObj to invoke the action with the supplied data. + * @param {String} actionName Action to call. + * @param {JSON} data JSON data to send. + * @param {Array} [transfers] Optional list of transfers/ArrayBuffers + */ + send: function messageHandlerSend(actionName, data, transfers) { + var message = { + action: actionName, + data: data + }; + this.postMessage(message, transfers); + }, + /** + * Sends a message to the comObj to invoke the action with the supplied data. + * Expects that other side will callback with the response. + * @param {String} actionName Action to call. + * @param {JSON} data JSON data to send. + * @param {Array} [transfers] Optional list of transfers/ArrayBuffers. + * @returns {Promise} Promise to be resolved with response data. + */ + sendWithPromise: + function messageHandlerSendWithPromise(actionName, data, transfers) { + var callbackId = this.callbackIndex++; + var message = { + action: actionName, + data: data, + callbackId: callbackId + }; + var capability = createPromiseCapability(); + this.callbacksCapabilities[callbackId] = capability; + try { + this.postMessage(message, transfers); + } catch (e) { + capability.reject(e); + } + return capability.promise; + }, + /** + * Sends raw message to the comObj. + * @private + * @param message {Object} Raw message. + * @param transfers List of transfers/ArrayBuffers, or undefined. + */ + postMessage: function (message, transfers) { + if (transfers && this.postMessageTransfers) { + this.comObj.postMessage(message, transfers); + } else { + this.comObj.postMessage(message); + } + } +}; + +function loadJpegStream(id, imageUrl, objs) { + var img = new Image(); + img.onload = (function loadJpegStream_onloadClosure() { + objs.resolve(id, img); + }); + img.onerror = (function loadJpegStream_onerrorClosure() { + objs.resolve(id, null); + warn('Error during JPEG image loading'); + }); + img.src = imageUrl; +} + + + +//#if (FIREFOX || MOZCENTRAL) +// +//Components.utils.import('resource://gre/modules/Services.jsm'); +// +//var EXPORTED_SYMBOLS = ['NetworkManager']; +// +//var console = { +// log: function console_log(aMsg) { +// var msg = 'network.js: ' + (aMsg.join ? aMsg.join('') : aMsg); +// Services.console.logStringMessage(msg); +// // TODO(mack): dump() doesn't seem to work here... +// dump(msg + '\n'); +// } +//} +//#endif + +var NetworkManager = (function NetworkManagerClosure() { + + var OK_RESPONSE = 200; + var PARTIAL_CONTENT_RESPONSE = 206; + + function NetworkManager(url, args) { + this.url = url; + args = args || {}; + this.isHttp = /^https?:/i.test(url); + this.httpHeaders = (this.isHttp && args.httpHeaders) || {}; + this.withCredentials = args.withCredentials || false; + this.getXhr = args.getXhr || + function NetworkManager_getXhr() { +//#if B2G +// return new XMLHttpRequest({ mozSystem: true }); +//#else + return new XMLHttpRequest(); +//#endif + }; + + this.currXhrId = 0; + this.pendingRequests = {}; + this.loadedRequests = {}; + } + + function getArrayBuffer(xhr) { + var data = xhr.response; + if (typeof data !== 'string') { + return data; + } + var length = data.length; + var array = new Uint8Array(length); + for (var i = 0; i < length; i++) { + array[i] = data.charCodeAt(i) & 0xFF; + } + return array.buffer; + } + + NetworkManager.prototype = { + requestRange: function NetworkManager_requestRange(begin, end, listeners) { + var args = { + begin: begin, + end: end + }; + for (var prop in listeners) { + args[prop] = listeners[prop]; + } + return this.request(args); + }, + + requestFull: function NetworkManager_requestFull(listeners) { + return this.request(listeners); + }, + + request: function NetworkManager_request(args) { + var xhr = this.getXhr(); + var xhrId = this.currXhrId++; + var pendingRequest = this.pendingRequests[xhrId] = { + xhr: xhr + }; + + xhr.open('GET', this.url); + xhr.withCredentials = this.withCredentials; + for (var property in this.httpHeaders) { + var value = this.httpHeaders[property]; + if (typeof value === 'undefined') { + continue; + } + xhr.setRequestHeader(property, value); + } + if (this.isHttp && 'begin' in args && 'end' in args) { + var rangeStr = args.begin + '-' + (args.end - 1); + xhr.setRequestHeader('Range', 'bytes=' + rangeStr); + pendingRequest.expectedStatus = 206; + } else { + pendingRequest.expectedStatus = 200; + } + + if (args.onProgressiveData) { + // Some legacy browsers might throw an exception. + try { + xhr.responseType = 'moz-chunked-arraybuffer'; + } catch(e) {} + if (xhr.responseType === 'moz-chunked-arraybuffer') { + pendingRequest.onProgressiveData = args.onProgressiveData; + pendingRequest.mozChunked = true; + } else { + xhr.responseType = 'arraybuffer'; + } + } else { + xhr.responseType = 'arraybuffer'; + } + + if (args.onError) { + xhr.onerror = function(evt) { + args.onError(xhr.status); + }; + } + xhr.onreadystatechange = this.onStateChange.bind(this, xhrId); + xhr.onprogress = this.onProgress.bind(this, xhrId); + + pendingRequest.onHeadersReceived = args.onHeadersReceived; + pendingRequest.onDone = args.onDone; + pendingRequest.onError = args.onError; + pendingRequest.onProgress = args.onProgress; + + xhr.send(null); + + return xhrId; + }, + + onProgress: function NetworkManager_onProgress(xhrId, evt) { + var pendingRequest = this.pendingRequests[xhrId]; + if (!pendingRequest) { + // Maybe abortRequest was called... + return; + } + + if (pendingRequest.mozChunked) { + var chunk = getArrayBuffer(pendingRequest.xhr); + pendingRequest.onProgressiveData(chunk); + } + + var onProgress = pendingRequest.onProgress; + if (onProgress) { + onProgress(evt); + } + }, + + onStateChange: function NetworkManager_onStateChange(xhrId, evt) { + var pendingRequest = this.pendingRequests[xhrId]; + if (!pendingRequest) { + // Maybe abortRequest was called... + return; + } + + var xhr = pendingRequest.xhr; + if (xhr.readyState >= 2 && pendingRequest.onHeadersReceived) { + pendingRequest.onHeadersReceived(); + delete pendingRequest.onHeadersReceived; + } + + if (xhr.readyState !== 4) { + return; + } + + if (!(xhrId in this.pendingRequests)) { + // The XHR request might have been aborted in onHeadersReceived() + // callback, in which case we should abort request + return; + } + + delete this.pendingRequests[xhrId]; + + // success status == 0 can be on ftp, file and other protocols + if (xhr.status === 0 && this.isHttp) { + if (pendingRequest.onError) { + pendingRequest.onError(xhr.status); + } + return; + } + var xhrStatus = xhr.status || OK_RESPONSE; + + // From http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.2: + // "A server MAY ignore the Range header". This means it's possible to + // get a 200 rather than a 206 response from a range request. + var ok_response_on_range_request = + xhrStatus === OK_RESPONSE && + pendingRequest.expectedStatus === PARTIAL_CONTENT_RESPONSE; + + if (!ok_response_on_range_request && + xhrStatus !== pendingRequest.expectedStatus) { + if (pendingRequest.onError) { + pendingRequest.onError(xhr.status); + } + return; + } + + this.loadedRequests[xhrId] = true; + + var chunk = getArrayBuffer(xhr); + if (xhrStatus === PARTIAL_CONTENT_RESPONSE) { + var rangeHeader = xhr.getResponseHeader('Content-Range'); + var matches = /bytes (\d+)-(\d+)\/(\d+)/.exec(rangeHeader); + var begin = parseInt(matches[1], 10); + pendingRequest.onDone({ + begin: begin, + chunk: chunk + }); + } else if (pendingRequest.onProgressiveData) { + pendingRequest.onDone(null); + } else { + pendingRequest.onDone({ + begin: 0, + chunk: chunk + }); + } + }, + + hasPendingRequests: function NetworkManager_hasPendingRequests() { + for (var xhrId in this.pendingRequests) { + return true; + } + return false; + }, + + getRequestXhr: function NetworkManager_getXhr(xhrId) { + return this.pendingRequests[xhrId].xhr; + }, + + isStreamingRequest: function NetworkManager_isStreamingRequest(xhrId) { + return !!(this.pendingRequests[xhrId].onProgressiveData); + }, + + isPendingRequest: function NetworkManager_isPendingRequest(xhrId) { + return xhrId in this.pendingRequests; + }, + + isLoadedRequest: function NetworkManager_isLoadedRequest(xhrId) { + return xhrId in this.loadedRequests; + }, + + abortAllRequests: function NetworkManager_abortAllRequests() { + for (var xhrId in this.pendingRequests) { + this.abortRequest(xhrId | 0); + } + }, + + abortRequest: function NetworkManager_abortRequest(xhrId) { + var xhr = this.pendingRequests[xhrId].xhr; + delete this.pendingRequests[xhrId]; + xhr.abort(); + } + }; + + return NetworkManager; +})(); + + +var ChunkedStream = (function ChunkedStreamClosure() { + function ChunkedStream(length, chunkSize, manager) { + this.bytes = new Uint8Array(length); + this.start = 0; + this.pos = 0; + this.end = length; + this.chunkSize = chunkSize; + this.loadedChunks = []; + this.numChunksLoaded = 0; + this.numChunks = Math.ceil(length / chunkSize); + this.manager = manager; + this.progressiveDataLength = 0; + this.lastSuccessfulEnsureByteChunk = -1; // a single-entry cache + } + + // required methods for a stream. if a particular stream does not + // implement these, an error should be thrown + ChunkedStream.prototype = { + + getMissingChunks: function ChunkedStream_getMissingChunks() { + var chunks = []; + for (var chunk = 0, n = this.numChunks; chunk < n; ++chunk) { + if (!this.loadedChunks[chunk]) { + chunks.push(chunk); + } + } + return chunks; + }, + + getBaseStreams: function ChunkedStream_getBaseStreams() { + return [this]; + }, + + allChunksLoaded: function ChunkedStream_allChunksLoaded() { + return this.numChunksLoaded === this.numChunks; + }, + + onReceiveData: function ChunkedStream_onReceiveData(begin, chunk) { + var end = begin + chunk.byteLength; + + assert(begin % this.chunkSize === 0, 'Bad begin offset: ' + begin); + // Using this.length is inaccurate here since this.start can be moved + // See ChunkedStream.moveStart() + var length = this.bytes.length; + assert(end % this.chunkSize === 0 || end === length, + 'Bad end offset: ' + end); + + this.bytes.set(new Uint8Array(chunk), begin); + var chunkSize = this.chunkSize; + var beginChunk = Math.floor(begin / chunkSize); + var endChunk = Math.floor((end - 1) / chunkSize) + 1; + var curChunk; + + for (curChunk = beginChunk; curChunk < endChunk; ++curChunk) { + if (!this.loadedChunks[curChunk]) { + this.loadedChunks[curChunk] = true; + ++this.numChunksLoaded; + } + } + }, + + onReceiveProgressiveData: + function ChunkedStream_onReceiveProgressiveData(data) { + var position = this.progressiveDataLength; + var beginChunk = Math.floor(position / this.chunkSize); + + this.bytes.set(new Uint8Array(data), position); + position += data.byteLength; + this.progressiveDataLength = position; + var endChunk = position >= this.end ? this.numChunks : + Math.floor(position / this.chunkSize); + var curChunk; + for (curChunk = beginChunk; curChunk < endChunk; ++curChunk) { + if (!this.loadedChunks[curChunk]) { + this.loadedChunks[curChunk] = true; + ++this.numChunksLoaded; + } + } + }, + + ensureByte: function ChunkedStream_ensureByte(pos) { + var chunk = Math.floor(pos / this.chunkSize); + if (chunk === this.lastSuccessfulEnsureByteChunk) { + return; + } + + if (!this.loadedChunks[chunk]) { + throw new MissingDataException(pos, pos + 1); + } + this.lastSuccessfulEnsureByteChunk = chunk; + }, + + ensureRange: function ChunkedStream_ensureRange(begin, end) { + if (begin >= end) { + return; + } + + if (end <= this.progressiveDataLength) { + return; + } + + var chunkSize = this.chunkSize; + var beginChunk = Math.floor(begin / chunkSize); + var endChunk = Math.floor((end - 1) / chunkSize) + 1; + for (var chunk = beginChunk; chunk < endChunk; ++chunk) { + if (!this.loadedChunks[chunk]) { + throw new MissingDataException(begin, end); + } + } + }, + + nextEmptyChunk: function ChunkedStream_nextEmptyChunk(beginChunk) { + var chunk, n; + for (chunk = beginChunk, n = this.numChunks; chunk < n; ++chunk) { + if (!this.loadedChunks[chunk]) { + return chunk; + } + } + // Wrap around to beginning + for (chunk = 0; chunk < beginChunk; ++chunk) { + if (!this.loadedChunks[chunk]) { + return chunk; + } + } + return null; + }, + + hasChunk: function ChunkedStream_hasChunk(chunk) { + return !!this.loadedChunks[chunk]; + }, + + get length() { + return this.end - this.start; + }, + + get isEmpty() { + return this.length === 0; + }, + + getByte: function ChunkedStream_getByte() { + var pos = this.pos; + if (pos >= this.end) { + return -1; + } + this.ensureByte(pos); + return this.bytes[this.pos++]; + }, + + getUint16: function ChunkedStream_getUint16() { + var b0 = this.getByte(); + var b1 = this.getByte(); + if (b0 === -1 || b1 === -1) { + return -1; + } + return (b0 << 8) + b1; + }, + + getInt32: function ChunkedStream_getInt32() { + var b0 = this.getByte(); + var b1 = this.getByte(); + var b2 = this.getByte(); + var b3 = this.getByte(); + return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3; + }, + + // returns subarray of original buffer + // should only be read + getBytes: function ChunkedStream_getBytes(length) { + var bytes = this.bytes; + var pos = this.pos; + var strEnd = this.end; + + if (!length) { + this.ensureRange(pos, strEnd); + return bytes.subarray(pos, strEnd); + } + + var end = pos + length; + if (end > strEnd) { + end = strEnd; + } + this.ensureRange(pos, end); + + this.pos = end; + return bytes.subarray(pos, end); + }, + + peekByte: function ChunkedStream_peekByte() { + var peekedByte = this.getByte(); + this.pos--; + return peekedByte; + }, + + peekBytes: function ChunkedStream_peekBytes(length) { + var bytes = this.getBytes(length); + this.pos -= bytes.length; + return bytes; + }, + + getByteRange: function ChunkedStream_getBytes(begin, end) { + this.ensureRange(begin, end); + return this.bytes.subarray(begin, end); + }, + + skip: function ChunkedStream_skip(n) { + if (!n) { + n = 1; + } + this.pos += n; + }, + + reset: function ChunkedStream_reset() { + this.pos = this.start; + }, + + moveStart: function ChunkedStream_moveStart() { + this.start = this.pos; + }, + + makeSubStream: function ChunkedStream_makeSubStream(start, length, dict) { + this.ensureRange(start, start + length); + + function ChunkedStreamSubstream() {} + ChunkedStreamSubstream.prototype = Object.create(this); + ChunkedStreamSubstream.prototype.getMissingChunks = function() { + var chunkSize = this.chunkSize; + var beginChunk = Math.floor(this.start / chunkSize); + var endChunk = Math.floor((this.end - 1) / chunkSize) + 1; + var missingChunks = []; + for (var chunk = beginChunk; chunk < endChunk; ++chunk) { + if (!this.loadedChunks[chunk]) { + missingChunks.push(chunk); + } + } + return missingChunks; + }; + var subStream = new ChunkedStreamSubstream(); + subStream.pos = subStream.start = start; + subStream.end = start + length || this.end; + subStream.dict = dict; + return subStream; + }, + + isStream: true + }; + + return ChunkedStream; +})(); + +var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { + + function ChunkedStreamManager(length, chunkSize, url, args) { + this.stream = new ChunkedStream(length, chunkSize, this); + this.length = length; + this.chunkSize = chunkSize; + this.url = url; + this.disableAutoFetch = args.disableAutoFetch; + var msgHandler = this.msgHandler = args.msgHandler; + + if (args.chunkedViewerLoading) { + msgHandler.on('OnDataRange', this.onReceiveData.bind(this)); + msgHandler.on('OnDataProgress', this.onProgress.bind(this)); + this.sendRequest = function ChunkedStreamManager_sendRequest(begin, end) { + msgHandler.send('RequestDataRange', { begin: begin, end: end }); + }; + } else { + + var getXhr = function getXhr() { +//#if B2G +// return new XMLHttpRequest({ mozSystem: true }); +//#else + return new XMLHttpRequest(); +//#endif + }; + this.networkManager = new NetworkManager(this.url, { + getXhr: getXhr, + httpHeaders: args.httpHeaders, + withCredentials: args.withCredentials + }); + this.sendRequest = function ChunkedStreamManager_sendRequest(begin, end) { + this.networkManager.requestRange(begin, end, { + onDone: this.onReceiveData.bind(this), + onProgress: this.onProgress.bind(this) + }); + }; + } + + this.currRequestId = 0; + + this.chunksNeededByRequest = {}; + this.requestsByChunk = {}; + this.callbacksByRequest = {}; + this.progressiveDataLength = 0; + + this._loadedStreamCapability = createPromiseCapability(); + + if (args.initialData) { + this.onReceiveData({chunk: args.initialData}); + } + } + + ChunkedStreamManager.prototype = { + onLoadedStream: function ChunkedStreamManager_getLoadedStream() { + return this._loadedStreamCapability.promise; + }, + + // Get all the chunks that are not yet loaded and groups them into + // contiguous ranges to load in as few requests as possible + requestAllChunks: function ChunkedStreamManager_requestAllChunks() { + var missingChunks = this.stream.getMissingChunks(); + this.requestChunks(missingChunks); + return this._loadedStreamCapability.promise; + }, + + requestChunks: function ChunkedStreamManager_requestChunks(chunks, + callback) { + var requestId = this.currRequestId++; + + var chunksNeeded; + var i, ii; + this.chunksNeededByRequest[requestId] = chunksNeeded = {}; + for (i = 0, ii = chunks.length; i < ii; i++) { + if (!this.stream.hasChunk(chunks[i])) { + chunksNeeded[chunks[i]] = true; + } + } + + if (isEmptyObj(chunksNeeded)) { + if (callback) { + callback(); + } + return; + } + + this.callbacksByRequest[requestId] = callback; + + var chunksToRequest = []; + for (var chunk in chunksNeeded) { + chunk = chunk | 0; + if (!(chunk in this.requestsByChunk)) { + this.requestsByChunk[chunk] = []; + chunksToRequest.push(chunk); + } + this.requestsByChunk[chunk].push(requestId); + } + + if (!chunksToRequest.length) { + return; + } + + var groupedChunksToRequest = this.groupChunks(chunksToRequest); + + for (i = 0; i < groupedChunksToRequest.length; ++i) { + var groupedChunk = groupedChunksToRequest[i]; + var begin = groupedChunk.beginChunk * this.chunkSize; + var end = Math.min(groupedChunk.endChunk * this.chunkSize, this.length); + this.sendRequest(begin, end); + } + }, + + getStream: function ChunkedStreamManager_getStream() { + return this.stream; + }, + + // Loads any chunks in the requested range that are not yet loaded + requestRange: function ChunkedStreamManager_requestRange( + begin, end, callback) { + + end = Math.min(end, this.length); + + var beginChunk = this.getBeginChunk(begin); + var endChunk = this.getEndChunk(end); + + var chunks = []; + for (var chunk = beginChunk; chunk < endChunk; ++chunk) { + chunks.push(chunk); + } + + this.requestChunks(chunks, callback); + }, + + requestRanges: function ChunkedStreamManager_requestRanges(ranges, + callback) { + ranges = ranges || []; + var chunksToRequest = []; + + for (var i = 0; i < ranges.length; i++) { + var beginChunk = this.getBeginChunk(ranges[i].begin); + var endChunk = this.getEndChunk(ranges[i].end); + for (var chunk = beginChunk; chunk < endChunk; ++chunk) { + if (chunksToRequest.indexOf(chunk) < 0) { + chunksToRequest.push(chunk); + } + } + } + + chunksToRequest.sort(function(a, b) { return a - b; }); + this.requestChunks(chunksToRequest, callback); + }, + + // Groups a sorted array of chunks into as few continguous larger + // chunks as possible + groupChunks: function ChunkedStreamManager_groupChunks(chunks) { + var groupedChunks = []; + var beginChunk = -1; + var prevChunk = -1; + for (var i = 0; i < chunks.length; ++i) { + var chunk = chunks[i]; + + if (beginChunk < 0) { + beginChunk = chunk; + } + + if (prevChunk >= 0 && prevChunk + 1 !== chunk) { + groupedChunks.push({ beginChunk: beginChunk, + endChunk: prevChunk + 1 }); + beginChunk = chunk; + } + if (i + 1 === chunks.length) { + groupedChunks.push({ beginChunk: beginChunk, + endChunk: chunk + 1 }); + } + + prevChunk = chunk; + } + return groupedChunks; + }, + + onProgress: function ChunkedStreamManager_onProgress(args) { + var bytesLoaded = (this.stream.numChunksLoaded * this.chunkSize + + args.loaded); + this.msgHandler.send('DocProgress', { + loaded: bytesLoaded, + total: this.length + }); + }, + + onReceiveData: function ChunkedStreamManager_onReceiveData(args) { + var chunk = args.chunk; + var isProgressive = args.begin === undefined; + var begin = isProgressive ? this.progressiveDataLength : args.begin; + var end = begin + chunk.byteLength; + + var beginChunk = Math.floor(begin / this.chunkSize); + var endChunk = end < this.length ? Math.floor(end / this.chunkSize) : + Math.ceil(end / this.chunkSize); + + if (isProgressive) { + this.stream.onReceiveProgressiveData(chunk); + this.progressiveDataLength = end; + } else { + this.stream.onReceiveData(begin, chunk); + } + + if (this.stream.allChunksLoaded()) { + this._loadedStreamCapability.resolve(this.stream); + } + + var loadedRequests = []; + var i, requestId; + for (chunk = beginChunk; chunk < endChunk; ++chunk) { + // The server might return more chunks than requested + var requestIds = this.requestsByChunk[chunk] || []; + delete this.requestsByChunk[chunk]; + + for (i = 0; i < requestIds.length; ++i) { + requestId = requestIds[i]; + var chunksNeeded = this.chunksNeededByRequest[requestId]; + if (chunk in chunksNeeded) { + delete chunksNeeded[chunk]; + } + + if (!isEmptyObj(chunksNeeded)) { + continue; + } + + loadedRequests.push(requestId); + } + } + + // If there are no pending requests, automatically fetch the next + // unfetched chunk of the PDF + if (!this.disableAutoFetch && isEmptyObj(this.requestsByChunk)) { + var nextEmptyChunk; + if (this.stream.numChunksLoaded === 1) { + // This is a special optimization so that after fetching the first + // chunk, rather than fetching the second chunk, we fetch the last + // chunk. + var lastChunk = this.stream.numChunks - 1; + if (!this.stream.hasChunk(lastChunk)) { + nextEmptyChunk = lastChunk; + } + } else { + nextEmptyChunk = this.stream.nextEmptyChunk(endChunk); + } + if (isInt(nextEmptyChunk)) { + this.requestChunks([nextEmptyChunk]); + } + } + + for (i = 0; i < loadedRequests.length; ++i) { + requestId = loadedRequests[i]; + var callback = this.callbacksByRequest[requestId]; + delete this.callbacksByRequest[requestId]; + if (callback) { + callback(); + } + } + + this.msgHandler.send('DocProgress', { + loaded: this.stream.numChunksLoaded * this.chunkSize, + total: this.length + }); + }, + + onError: function ChunkedStreamManager_onError(err) { + this._loadedStreamCapability.reject(err); + }, + + getBeginChunk: function ChunkedStreamManager_getBeginChunk(begin) { + var chunk = Math.floor(begin / this.chunkSize); + return chunk; + }, + + getEndChunk: function ChunkedStreamManager_getEndChunk(end) { + if (end % this.chunkSize === 0) { + return end / this.chunkSize; + } + + // 0 -> 0 + // 1 -> 1 + // 99 -> 1 + // 100 -> 1 + // 101 -> 2 + var chunk = Math.floor((end - 1) / this.chunkSize) + 1; + return chunk; + } + }; + + return ChunkedStreamManager; +})(); + + +// The maximum number of bytes fetched per range request +var RANGE_CHUNK_SIZE = 65536; + +// TODO(mack): Make use of PDFJS.Util.inherit() when it becomes available +var BasePdfManager = (function BasePdfManagerClosure() { + function BasePdfManager() { + throw new Error('Cannot initialize BaseManagerManager'); + } + + BasePdfManager.prototype = { + onLoadedStream: function BasePdfManager_onLoadedStream() { + throw new NotImplementedException(); + }, + + ensureDoc: function BasePdfManager_ensureDoc(prop, args) { + return this.ensure(this.pdfDocument, prop, args); + }, + + ensureXRef: function BasePdfManager_ensureXRef(prop, args) { + return this.ensure(this.pdfDocument.xref, prop, args); + }, + + ensureCatalog: function BasePdfManager_ensureCatalog(prop, args) { + return this.ensure(this.pdfDocument.catalog, prop, args); + }, + + getPage: function BasePdfManager_pagePage(pageIndex) { + return this.pdfDocument.getPage(pageIndex); + }, + + cleanup: function BasePdfManager_cleanup() { + return this.pdfDocument.cleanup(); + }, + + ensure: function BasePdfManager_ensure(obj, prop, args) { + return new NotImplementedException(); + }, + + requestRange: function BasePdfManager_ensure(begin, end) { + return new NotImplementedException(); + }, + + requestLoadedStream: function BasePdfManager_requestLoadedStream() { + return new NotImplementedException(); + }, + + sendProgressiveData: function BasePdfManager_sendProgressiveData(chunk) { + return new NotImplementedException(); + }, + + updatePassword: function BasePdfManager_updatePassword(password) { + this.pdfDocument.xref.password = this.password = password; + if (this._passwordChangedCapability) { + this._passwordChangedCapability.resolve(); + } + }, + + passwordChanged: function BasePdfManager_passwordChanged() { + this._passwordChangedCapability = createPromiseCapability(); + return this._passwordChangedCapability.promise; + }, + + terminate: function BasePdfManager_terminate() { + return new NotImplementedException(); + } + }; + + return BasePdfManager; +})(); + +var LocalPdfManager = (function LocalPdfManagerClosure() { + function LocalPdfManager(data, password) { + var stream = new Stream(data); + this.pdfDocument = new PDFDocument(this, stream, password); + this._loadedStreamCapability = createPromiseCapability(); + this._loadedStreamCapability.resolve(stream); + } + + LocalPdfManager.prototype = Object.create(BasePdfManager.prototype); + LocalPdfManager.prototype.constructor = LocalPdfManager; + + LocalPdfManager.prototype.ensure = + function LocalPdfManager_ensure(obj, prop, args) { + return new Promise(function (resolve, reject) { + try { + var value = obj[prop]; + var result; + if (typeof value === 'function') { + result = value.apply(obj, args); + } else { + result = value; + } + resolve(result); + } catch (e) { + reject(e); + } + }); + }; + + LocalPdfManager.prototype.requestRange = + function LocalPdfManager_requestRange(begin, end) { + return Promise.resolve(); + }; + + LocalPdfManager.prototype.requestLoadedStream = + function LocalPdfManager_requestLoadedStream() { + }; + + LocalPdfManager.prototype.onLoadedStream = + function LocalPdfManager_getLoadedStream() { + return this._loadedStreamCapability.promise; + }; + + LocalPdfManager.prototype.terminate = + function LocalPdfManager_terminate() { + return; + }; + + return LocalPdfManager; +})(); + +var NetworkPdfManager = (function NetworkPdfManagerClosure() { + function NetworkPdfManager(args, msgHandler) { + + this.msgHandler = msgHandler; + + var params = { + msgHandler: msgHandler, + httpHeaders: args.httpHeaders, + withCredentials: args.withCredentials, + chunkedViewerLoading: args.chunkedViewerLoading, + disableAutoFetch: args.disableAutoFetch, + initialData: args.initialData + }; + this.streamManager = new ChunkedStreamManager(args.length, RANGE_CHUNK_SIZE, + args.url, params); + + this.pdfDocument = new PDFDocument(this, this.streamManager.getStream(), + args.password); + } + + NetworkPdfManager.prototype = Object.create(BasePdfManager.prototype); + NetworkPdfManager.prototype.constructor = NetworkPdfManager; + + NetworkPdfManager.prototype.ensure = + function NetworkPdfManager_ensure(obj, prop, args) { + var pdfManager = this; + + return new Promise(function (resolve, reject) { + function ensureHelper() { + try { + var result; + var value = obj[prop]; + if (typeof value === 'function') { + result = value.apply(obj, args); + } else { + result = value; + } + resolve(result); + } catch(e) { + if (!(e instanceof MissingDataException)) { + reject(e); + return; + } + pdfManager.streamManager.requestRange(e.begin, e.end, ensureHelper); + } + } + + ensureHelper(); + }); + }; + + NetworkPdfManager.prototype.requestRange = + function NetworkPdfManager_requestRange(begin, end) { + return new Promise(function (resolve) { + this.streamManager.requestRange(begin, end, function() { + resolve(); + }); + }.bind(this)); + }; + + NetworkPdfManager.prototype.requestLoadedStream = + function NetworkPdfManager_requestLoadedStream() { + this.streamManager.requestAllChunks(); + }; + + NetworkPdfManager.prototype.sendProgressiveData = + function NetworkPdfManager_sendProgressiveData(chunk) { + this.streamManager.onReceiveData({ chunk: chunk }); + }; + + NetworkPdfManager.prototype.onLoadedStream = + function NetworkPdfManager_getLoadedStream() { + return this.streamManager.onLoadedStream(); + }; + + NetworkPdfManager.prototype.terminate = + function NetworkPdfManager_terminate() { + this.streamManager.networkManager.abortAllRequests(); + }; + + return NetworkPdfManager; +})(); + + +var Page = (function PageClosure() { + + var LETTER_SIZE_MEDIABOX = [0, 0, 612, 792]; + + function Page(pdfManager, xref, pageIndex, pageDict, ref, fontCache) { + this.pdfManager = pdfManager; + this.pageIndex = pageIndex; + this.pageDict = pageDict; + this.xref = xref; + this.ref = ref; + this.fontCache = fontCache; + this.idCounters = { + obj: 0 + }; + this.resourcesPromise = null; + } + + Page.prototype = { + getPageProp: function Page_getPageProp(key) { + return this.pageDict.get(key); + }, + + getInheritedPageProp: function Page_inheritPageProp(key) { + var dict = this.pageDict; + var value = dict.get(key); + while (value === undefined) { + dict = dict.get('Parent'); + if (!dict) { + break; + } + value = dict.get(key); + } + return value; + }, + + get content() { + return this.getPageProp('Contents'); + }, + + get resources() { + var value = this.getInheritedPageProp('Resources'); + // For robustness: The spec states that a \Resources entry has to be + // present, but can be empty. Some document omit it still. In this case + // return an empty dictionary: + if (value === undefined) { + value = Dict.empty; + } + return shadow(this, 'resources', value); + }, + + get mediaBox() { + var obj = this.getInheritedPageProp('MediaBox'); + // Reset invalid media box to letter size. + if (!isArray(obj) || obj.length !== 4) { + obj = LETTER_SIZE_MEDIABOX; + } + return shadow(this, 'mediaBox', obj); + }, + + get view() { + var mediaBox = this.mediaBox; + var cropBox = this.getInheritedPageProp('CropBox'); + if (!isArray(cropBox) || cropBox.length !== 4) { + return shadow(this, 'view', mediaBox); + } + + // From the spec, 6th ed., p.963: + // "The crop, bleed, trim, and art boxes should not ordinarily + // extend beyond the boundaries of the media box. If they do, they are + // effectively reduced to their intersection with the media box." + cropBox = Util.intersect(cropBox, mediaBox); + if (!cropBox) { + return shadow(this, 'view', mediaBox); + } + return shadow(this, 'view', cropBox); + }, + + get annotationRefs() { + return shadow(this, 'annotationRefs', + this.getInheritedPageProp('Annots')); + }, + + get rotate() { + var rotate = this.getInheritedPageProp('Rotate') || 0; + // Normalize rotation so it's a multiple of 90 and between 0 and 270 + if (rotate % 90 !== 0) { + rotate = 0; + } else if (rotate >= 360) { + rotate = rotate % 360; + } else if (rotate < 0) { + // The spec doesn't cover negatives, assume its counterclockwise + // rotation. The following is the other implementation of modulo. + rotate = ((rotate % 360) + 360) % 360; + } + return shadow(this, 'rotate', rotate); + }, + + getContentStream: function Page_getContentStream() { + var content = this.content; + var stream; + if (isArray(content)) { + // fetching items + var xref = this.xref; + var i, n = content.length; + var streams = []; + for (i = 0; i < n; ++i) { + streams.push(xref.fetchIfRef(content[i])); + } + stream = new StreamsSequenceStream(streams); + } else if (isStream(content)) { + stream = content; + } else { + // replacing non-existent page content with empty one + stream = new NullStream(); + } + return stream; + }, + + loadResources: function Page_loadResources(keys) { + if (!this.resourcesPromise) { + // TODO: add async getInheritedPageProp and remove this. + this.resourcesPromise = this.pdfManager.ensure(this, 'resources'); + } + return this.resourcesPromise.then(function resourceSuccess() { + var objectLoader = new ObjectLoader(this.resources.map, + keys, + this.xref); + return objectLoader.load(); + }.bind(this)); + }, + + getOperatorList: function Page_getOperatorList(handler, intent) { + var self = this; + + var pdfManager = this.pdfManager; + var contentStreamPromise = pdfManager.ensure(this, 'getContentStream', + []); + var resourcesPromise = this.loadResources([ + 'ExtGState', + 'ColorSpace', + 'Pattern', + 'Shading', + 'XObject', + 'Font' + // ProcSet + // Properties + ]); + + var partialEvaluator = new PartialEvaluator(pdfManager, this.xref, + handler, this.pageIndex, + 'p' + this.pageIndex + '_', + this.idCounters, + this.fontCache); + + var dataPromises = Promise.all([contentStreamPromise, resourcesPromise]); + var pageListPromise = dataPromises.then(function(data) { + var contentStream = data[0]; + var opList = new OperatorList(intent, handler, self.pageIndex); + + handler.send('StartRenderPage', { + transparency: partialEvaluator.hasBlendModes(self.resources), + pageIndex: self.pageIndex, + intent: intent + }); + return partialEvaluator.getOperatorList(contentStream, self.resources, + opList).then(function () { + return opList; + }); + }); + + var annotationsPromise = pdfManager.ensure(this, 'annotations'); + return Promise.all([pageListPromise, annotationsPromise]).then( + function(datas) { + var pageOpList = datas[0]; + var annotations = datas[1]; + + if (annotations.length === 0) { + pageOpList.flush(true); + return pageOpList; + } + + var annotationsReadyPromise = Annotation.appendToOperatorList( + annotations, pageOpList, pdfManager, partialEvaluator, intent); + return annotationsReadyPromise.then(function () { + pageOpList.flush(true); + return pageOpList; + }); + }); + }, + + extractTextContent: function Page_extractTextContent() { + var handler = { + on: function nullHandlerOn() {}, + send: function nullHandlerSend() {} + }; + + var self = this; + + var pdfManager = this.pdfManager; + var contentStreamPromise = pdfManager.ensure(this, 'getContentStream', + []); + + var resourcesPromise = this.loadResources([ + 'ExtGState', + 'XObject', + 'Font' + ]); + + var dataPromises = Promise.all([contentStreamPromise, + resourcesPromise]); + return dataPromises.then(function(data) { + var contentStream = data[0]; + var partialEvaluator = new PartialEvaluator(pdfManager, self.xref, + handler, self.pageIndex, + 'p' + self.pageIndex + '_', + self.idCounters, + self.fontCache); + + return partialEvaluator.getTextContent(contentStream, + self.resources); + }); + }, + + getAnnotationsData: function Page_getAnnotationsData() { + var annotations = this.annotations; + var annotationsData = []; + for (var i = 0, n = annotations.length; i < n; ++i) { + annotationsData.push(annotations[i].getData()); + } + return annotationsData; + }, + + get annotations() { + var annotations = []; + var annotationRefs = (this.annotationRefs || []); + for (var i = 0, n = annotationRefs.length; i < n; ++i) { + var annotationRef = annotationRefs[i]; + var annotation = Annotation.fromRef(this.xref, annotationRef); + if (annotation) { + annotations.push(annotation); + } + } + return shadow(this, 'annotations', annotations); + } + }; + + return Page; +})(); + +/** + * The `PDFDocument` holds all the data of the PDF file. Compared to the + * `PDFDoc`, this one doesn't have any job management code. + * Right now there exists one PDFDocument on the main thread + one object + * for each worker. If there is no worker support enabled, there are two + * `PDFDocument` objects on the main thread created. + */ +var PDFDocument = (function PDFDocumentClosure() { + var FINGERPRINT_FIRST_BYTES = 1024; + var EMPTY_FINGERPRINT = '\x00\x00\x00\x00\x00\x00\x00' + + '\x00\x00\x00\x00\x00\x00\x00\x00\x00'; + + function PDFDocument(pdfManager, arg, password) { + if (isStream(arg)) { + init.call(this, pdfManager, arg, password); + } else if (isArrayBuffer(arg)) { + init.call(this, pdfManager, new Stream(arg), password); + } else { + error('PDFDocument: Unknown argument type'); + } + } + + function init(pdfManager, stream, password) { + assert(stream.length > 0, 'stream must have data'); + this.pdfManager = pdfManager; + this.stream = stream; + var xref = new XRef(this.stream, password, pdfManager); + this.xref = xref; + } + + function find(stream, needle, limit, backwards) { + var pos = stream.pos; + var end = stream.end; + var strBuf = []; + if (pos + limit > end) { + limit = end - pos; + } + for (var n = 0; n < limit; ++n) { + strBuf.push(String.fromCharCode(stream.getByte())); + } + var str = strBuf.join(''); + stream.pos = pos; + var index = backwards ? str.lastIndexOf(needle) : str.indexOf(needle); + if (index === -1) { + return false; /* not found */ + } + stream.pos += index; + return true; /* found */ + } + + var DocumentInfoValidators = { + get entries() { + // Lazily build this since all the validation functions below are not + // defined until after this file loads. + return shadow(this, 'entries', { + Title: isString, + Author: isString, + Subject: isString, + Keywords: isString, + Creator: isString, + Producer: isString, + CreationDate: isString, + ModDate: isString, + Trapped: isName + }); + } + }; + + PDFDocument.prototype = { + parse: function PDFDocument_parse(recoveryMode) { + this.setup(recoveryMode); + try { + // checking if AcroForm is present + this.acroForm = this.catalog.catDict.get('AcroForm'); + if (this.acroForm) { + this.xfa = this.acroForm.get('XFA'); + var fields = this.acroForm.get('Fields'); + if ((!fields || !isArray(fields) || fields.length === 0) && + !this.xfa) { + // no fields and no XFA -- not a form (?) + this.acroForm = null; + } + } + } catch (ex) { + info('Something wrong with AcroForm entry'); + this.acroForm = null; + } + }, + + get linearization() { + var linearization = null; + if (this.stream.length) { + try { + linearization = Linearization.create(this.stream); + } catch (err) { + if (err instanceof MissingDataException) { + throw err; + } + info(err); + } + } + // shadow the prototype getter with a data property + return shadow(this, 'linearization', linearization); + }, + get startXRef() { + var stream = this.stream; + var startXRef = 0; + var linearization = this.linearization; + if (linearization) { + // Find end of first obj. + stream.reset(); + if (find(stream, 'endobj', 1024)) { + startXRef = stream.pos + 6; + } + } else { + // Find startxref by jumping backward from the end of the file. + var step = 1024; + var found = false, pos = stream.end; + while (!found && pos > 0) { + pos -= step - 'startxref'.length; + if (pos < 0) { + pos = 0; + } + stream.pos = pos; + found = find(stream, 'startxref', step, true); + } + if (found) { + stream.skip(9); + var ch; + do { + ch = stream.getByte(); + } while (Lexer.isSpace(ch)); + var str = ''; + while (ch >= 0x20 && ch <= 0x39) { // < '9' + str += String.fromCharCode(ch); + ch = stream.getByte(); + } + startXRef = parseInt(str, 10); + if (isNaN(startXRef)) { + startXRef = 0; + } + } + } + // shadow the prototype getter with a data property + return shadow(this, 'startXRef', startXRef); + }, + get mainXRefEntriesOffset() { + var mainXRefEntriesOffset = 0; + var linearization = this.linearization; + if (linearization) { + mainXRefEntriesOffset = linearization.mainXRefEntriesOffset; + } + // shadow the prototype getter with a data property + return shadow(this, 'mainXRefEntriesOffset', mainXRefEntriesOffset); + }, + // Find the header, remove leading garbage and setup the stream + // starting from the header. + checkHeader: function PDFDocument_checkHeader() { + var stream = this.stream; + stream.reset(); + if (find(stream, '%PDF-', 1024)) { + // Found the header, trim off any garbage before it. + stream.moveStart(); + // Reading file format version + var MAX_VERSION_LENGTH = 12; + var version = '', ch; + while ((ch = stream.getByte()) > 0x20) { // SPACE + if (version.length >= MAX_VERSION_LENGTH) { + break; + } + version += String.fromCharCode(ch); + } + // removing "%PDF-"-prefix + this.pdfFormatVersion = version.substring(5); + return; + } + // May not be a PDF file, continue anyway. + }, + parseStartXRef: function PDFDocument_parseStartXRef() { + var startXRef = this.startXRef; + this.xref.setStartXRef(startXRef); + }, + setup: function PDFDocument_setup(recoveryMode) { + this.xref.parse(recoveryMode); + this.catalog = new Catalog(this.pdfManager, this.xref); + }, + get numPages() { + var linearization = this.linearization; + var num = linearization ? linearization.numPages : this.catalog.numPages; + // shadow the prototype getter + return shadow(this, 'numPages', num); + }, + get documentInfo() { + var docInfo = { + PDFFormatVersion: this.pdfFormatVersion, + IsAcroFormPresent: !!this.acroForm, + IsXFAPresent: !!this.xfa + }; + var infoDict; + try { + infoDict = this.xref.trailer.get('Info'); + } catch (err) { + info('The document information dictionary is invalid.'); + } + if (infoDict) { + var validEntries = DocumentInfoValidators.entries; + // Only fill the document info with valid entries from the spec. + for (var key in validEntries) { + if (infoDict.has(key)) { + var value = infoDict.get(key); + // Make sure the value conforms to the spec. + if (validEntries[key](value)) { + docInfo[key] = (typeof value !== 'string' ? + value : stringToPDFString(value)); + } else { + info('Bad value in document info for "' + key + '"'); + } + } + } + } + return shadow(this, 'documentInfo', docInfo); + }, + get fingerprint() { + var xref = this.xref, idArray, hash, fileID = ''; + + if (xref.trailer.has('ID')) { + idArray = xref.trailer.get('ID'); + } + if (idArray && isArray(idArray) && idArray[0] !== EMPTY_FINGERPRINT) { + hash = stringToBytes(idArray[0]); + } else { + if (this.stream.ensureRange) { + this.stream.ensureRange(0, + Math.min(FINGERPRINT_FIRST_BYTES, this.stream.end)); + } + hash = calculateMD5(this.stream.bytes.subarray(0, + FINGERPRINT_FIRST_BYTES), 0, FINGERPRINT_FIRST_BYTES); + } + + for (var i = 0, n = hash.length; i < n; i++) { + var hex = hash[i].toString(16); + fileID += hex.length === 1 ? '0' + hex : hex; + } + + return shadow(this, 'fingerprint', fileID); + }, + + getPage: function PDFDocument_getPage(pageIndex) { + return this.catalog.getPage(pageIndex); + }, + + cleanup: function PDFDocument_cleanup() { + return this.catalog.cleanup(); + } + }; + + return PDFDocument; +})(); + + +var Name = (function NameClosure() { + function Name(name) { + this.name = name; + } + + Name.prototype = {}; + + var nameCache = {}; + + Name.get = function Name_get(name) { + var nameValue = nameCache[name]; + return (nameValue ? nameValue : (nameCache[name] = new Name(name))); + }; + + return Name; +})(); + +var Cmd = (function CmdClosure() { + function Cmd(cmd) { + this.cmd = cmd; + } + + Cmd.prototype = {}; + + var cmdCache = {}; + + Cmd.get = function Cmd_get(cmd) { + var cmdValue = cmdCache[cmd]; + return (cmdValue ? cmdValue : (cmdCache[cmd] = new Cmd(cmd))); + }; + + return Cmd; +})(); + +var Dict = (function DictClosure() { + var nonSerializable = function nonSerializableClosure() { + return nonSerializable; // creating closure on some variable + }; + + var GETALL_DICTIONARY_TYPES_WHITELIST = { + 'Background': true, + 'ExtGState': true, + 'Halftone': true, + 'Layout': true, + 'Mask': true, + 'Pagination': true, + 'Printing': true + }; + + function isRecursionAllowedFor(dict) { + if (!isName(dict.Type)) { + return true; + } + var dictType = dict.Type.name; + return GETALL_DICTIONARY_TYPES_WHITELIST[dictType] === true; + } + + // xref is optional + function Dict(xref) { + // Map should only be used internally, use functions below to access. + this.map = Object.create(null); + this.xref = xref; + this.objId = null; + this.__nonSerializable__ = nonSerializable; // disable cloning of the Dict + } + + Dict.prototype = { + assignXref: function Dict_assignXref(newXref) { + this.xref = newXref; + }, + + // automatically dereferences Ref objects + get: function Dict_get(key1, key2, key3) { + var value; + var xref = this.xref; + if (typeof (value = this.map[key1]) !== 'undefined' || key1 in this.map || + typeof key2 === 'undefined') { + return xref ? xref.fetchIfRef(value) : value; + } + if (typeof (value = this.map[key2]) !== 'undefined' || key2 in this.map || + typeof key3 === 'undefined') { + return xref ? xref.fetchIfRef(value) : value; + } + value = this.map[key3] || null; + return xref ? xref.fetchIfRef(value) : value; + }, + + // Same as get(), but returns a promise and uses fetchIfRefAsync(). + getAsync: function Dict_getAsync(key1, key2, key3) { + var value; + var xref = this.xref; + if (typeof (value = this.map[key1]) !== 'undefined' || key1 in this.map || + typeof key2 === 'undefined') { + if (xref) { + return xref.fetchIfRefAsync(value); + } + return Promise.resolve(value); + } + if (typeof (value = this.map[key2]) !== 'undefined' || key2 in this.map || + typeof key3 === 'undefined') { + if (xref) { + return xref.fetchIfRefAsync(value); + } + return Promise.resolve(value); + } + value = this.map[key3] || null; + if (xref) { + return xref.fetchIfRefAsync(value); + } + return Promise.resolve(value); + }, + + // no dereferencing + getRaw: function Dict_getRaw(key) { + return this.map[key]; + }, + + // creates new map and dereferences all Refs + getAll: function Dict_getAll() { + var all = Object.create(null); + var queue = null; + var key, obj; + for (key in this.map) { + obj = this.get(key); + if (obj instanceof Dict) { + if (isRecursionAllowedFor(obj)) { + (queue || (queue = [])).push({target: all, key: key, obj: obj}); + } else { + all[key] = this.getRaw(key); + } + } else { + all[key] = obj; + } + } + if (!queue) { + return all; + } + + // trying to take cyclic references into the account + var processed = Object.create(null); + while (queue.length > 0) { + var item = queue.shift(); + var itemObj = item.obj; + var objId = itemObj.objId; + if (objId && objId in processed) { + item.target[item.key] = processed[objId]; + continue; + } + var dereferenced = Object.create(null); + for (key in itemObj.map) { + obj = itemObj.get(key); + if (obj instanceof Dict) { + if (isRecursionAllowedFor(obj)) { + queue.push({target: dereferenced, key: key, obj: obj}); + } else { + dereferenced[key] = itemObj.getRaw(key); + } + } else { + dereferenced[key] = obj; + } + } + if (objId) { + processed[objId] = dereferenced; + } + item.target[item.key] = dereferenced; + } + return all; + }, + + getKeys: function Dict_getKeys() { + return Object.keys(this.map); + }, + + set: function Dict_set(key, value) { + this.map[key] = value; + }, + + has: function Dict_has(key) { + return key in this.map; + }, + + forEach: function Dict_forEach(callback) { + for (var key in this.map) { + callback(key, this.get(key)); + } + } + }; + + Dict.empty = new Dict(null); + + return Dict; +})(); + +var Ref = (function RefClosure() { + function Ref(num, gen) { + this.num = num; + this.gen = gen; + } + + Ref.prototype = { + toString: function Ref_toString() { + // This function is hot, so we make the string as compact as possible. + // |this.gen| is almost always zero, so we treat that case specially. + var str = this.num + 'R'; + if (this.gen !== 0) { + str += this.gen; + } + return str; + } + }; + + return Ref; +})(); + +// The reference is identified by number and generation. +// This structure stores only one instance of the reference. +var RefSet = (function RefSetClosure() { + function RefSet() { + this.dict = {}; + } + + RefSet.prototype = { + has: function RefSet_has(ref) { + return ref.toString() in this.dict; + }, + + put: function RefSet_put(ref) { + this.dict[ref.toString()] = true; + }, + + remove: function RefSet_remove(ref) { + delete this.dict[ref.toString()]; + } + }; + + return RefSet; +})(); + +var RefSetCache = (function RefSetCacheClosure() { + function RefSetCache() { + this.dict = Object.create(null); + } + + RefSetCache.prototype = { + get: function RefSetCache_get(ref) { + return this.dict[ref.toString()]; + }, + + has: function RefSetCache_has(ref) { + return ref.toString() in this.dict; + }, + + put: function RefSetCache_put(ref, obj) { + this.dict[ref.toString()] = obj; + }, + + putAlias: function RefSetCache_putAlias(ref, aliasRef) { + this.dict[ref.toString()] = this.get(aliasRef); + }, + + forEach: function RefSetCache_forEach(fn, thisArg) { + for (var i in this.dict) { + fn.call(thisArg, this.dict[i]); + } + }, + + clear: function RefSetCache_clear() { + this.dict = Object.create(null); + } + }; + + return RefSetCache; +})(); + +var Catalog = (function CatalogClosure() { + function Catalog(pdfManager, xref) { + this.pdfManager = pdfManager; + this.xref = xref; + this.catDict = xref.getCatalogObj(); + this.fontCache = new RefSetCache(); + assert(isDict(this.catDict), + 'catalog object is not a dictionary'); + + this.pagePromises = []; + } + + Catalog.prototype = { + get metadata() { + var streamRef = this.catDict.getRaw('Metadata'); + if (!isRef(streamRef)) { + return shadow(this, 'metadata', null); + } + + var encryptMetadata = (!this.xref.encrypt ? false : + this.xref.encrypt.encryptMetadata); + + var stream = this.xref.fetch(streamRef, !encryptMetadata); + var metadata; + if (stream && isDict(stream.dict)) { + var type = stream.dict.get('Type'); + var subtype = stream.dict.get('Subtype'); + + if (isName(type) && isName(subtype) && + type.name === 'Metadata' && subtype.name === 'XML') { + // XXX: This should examine the charset the XML document defines, + // however since there are currently no real means to decode + // arbitrary charsets, let's just hope that the author of the PDF + // was reasonable enough to stick with the XML default charset, + // which is UTF-8. + try { + metadata = stringToUTF8String(bytesToString(stream.getBytes())); + } catch (e) { + info('Skipping invalid metadata.'); + } + } + } + + return shadow(this, 'metadata', metadata); + }, + get toplevelPagesDict() { + var pagesObj = this.catDict.get('Pages'); + assert(isDict(pagesObj), 'invalid top-level pages dictionary'); + // shadow the prototype getter + return shadow(this, 'toplevelPagesDict', pagesObj); + }, + get documentOutline() { + var obj = null; + try { + obj = this.readDocumentOutline(); + } catch (ex) { + if (ex instanceof MissingDataException) { + throw ex; + } + warn('Unable to read document outline'); + } + return shadow(this, 'documentOutline', obj); + }, + readDocumentOutline: function Catalog_readDocumentOutline() { + var xref = this.xref; + var obj = this.catDict.get('Outlines'); + var root = { items: [] }; + if (isDict(obj)) { + obj = obj.getRaw('First'); + var processed = new RefSet(); + if (isRef(obj)) { + var queue = [{obj: obj, parent: root}]; + // to avoid recursion keeping track of the items + // in the processed dictionary + processed.put(obj); + while (queue.length > 0) { + var i = queue.shift(); + var outlineDict = xref.fetchIfRef(i.obj); + if (outlineDict === null) { + continue; + } + if (!outlineDict.has('Title')) { + error('Invalid outline item'); + } + var dest = outlineDict.get('A'); + if (dest) { + dest = dest.get('D'); + } else if (outlineDict.has('Dest')) { + dest = outlineDict.getRaw('Dest'); + if (isName(dest)) { + dest = dest.name; + } + } + var title = outlineDict.get('Title'); + var outlineItem = { + dest: dest, + title: stringToPDFString(title), + color: outlineDict.get('C') || [0, 0, 0], + count: outlineDict.get('Count'), + bold: !!(outlineDict.get('F') & 2), + italic: !!(outlineDict.get('F') & 1), + items: [] + }; + i.parent.items.push(outlineItem); + obj = outlineDict.getRaw('First'); + if (isRef(obj) && !processed.has(obj)) { + queue.push({obj: obj, parent: outlineItem}); + processed.put(obj); + } + obj = outlineDict.getRaw('Next'); + if (isRef(obj) && !processed.has(obj)) { + queue.push({obj: obj, parent: i.parent}); + processed.put(obj); + } + } + } + } + return (root.items.length > 0 ? root.items : null); + }, + get numPages() { + var obj = this.toplevelPagesDict.get('Count'); + assert( + isInt(obj), + 'page count in top level pages object is not an integer' + ); + // shadow the prototype getter + return shadow(this, 'num', obj); + }, + get destinations() { + function fetchDestination(dest) { + return isDict(dest) ? dest.get('D') : dest; + } + + var xref = this.xref; + var dests = {}, nameTreeRef, nameDictionaryRef; + var obj = this.catDict.get('Names'); + if (obj && obj.has('Dests')) { + nameTreeRef = obj.getRaw('Dests'); + } else if (this.catDict.has('Dests')) { + nameDictionaryRef = this.catDict.get('Dests'); + } + + if (nameDictionaryRef) { + // reading simple destination dictionary + obj = nameDictionaryRef; + obj.forEach(function catalogForEach(key, value) { + if (!value) { + return; + } + dests[key] = fetchDestination(value); + }); + } + if (nameTreeRef) { + var nameTree = new NameTree(nameTreeRef, xref); + var names = nameTree.getAll(); + for (var name in names) { + if (!names.hasOwnProperty(name)) { + continue; + } + dests[name] = fetchDestination(names[name]); + } + } + return shadow(this, 'destinations', dests); + }, + getDestination: function Catalog_getDestination(destinationId) { + function fetchDestination(dest) { + return isDict(dest) ? dest.get('D') : dest; + } + + var xref = this.xref; + var dest, nameTreeRef, nameDictionaryRef; + var obj = this.catDict.get('Names'); + if (obj && obj.has('Dests')) { + nameTreeRef = obj.getRaw('Dests'); + } else if (this.catDict.has('Dests')) { + nameDictionaryRef = this.catDict.get('Dests'); + } + + if (nameDictionaryRef) { + // reading simple destination dictionary + obj = nameDictionaryRef; + obj.forEach(function catalogForEach(key, value) { + if (!value) { + return; + } + if (key === destinationId) { + dest = fetchDestination(value); + } + }); + } + if (nameTreeRef) { + var nameTree = new NameTree(nameTreeRef, xref); + dest = fetchDestination(nameTree.get(destinationId)); + } + return dest; + }, + get attachments() { + var xref = this.xref; + var attachments = null, nameTreeRef; + var obj = this.catDict.get('Names'); + if (obj) { + nameTreeRef = obj.getRaw('EmbeddedFiles'); + } + + if (nameTreeRef) { + var nameTree = new NameTree(nameTreeRef, xref); + var names = nameTree.getAll(); + for (var name in names) { + if (!names.hasOwnProperty(name)) { + continue; + } + var fs = new FileSpec(names[name], xref); + if (!attachments) { + attachments = {}; + } + attachments[stringToPDFString(name)] = fs.serializable; + } + } + return shadow(this, 'attachments', attachments); + }, + get javaScript() { + var xref = this.xref; + var obj = this.catDict.get('Names'); + + var javaScript = []; + if (obj && obj.has('JavaScript')) { + var nameTree = new NameTree(obj.getRaw('JavaScript'), xref); + var names = nameTree.getAll(); + for (var name in names) { + if (!names.hasOwnProperty(name)) { + continue; + } + // We don't really use the JavaScript right now. This code is + // defensive so we don't cause errors on document load. + var jsDict = names[name]; + if (!isDict(jsDict)) { + continue; + } + var type = jsDict.get('S'); + if (!isName(type) || type.name !== 'JavaScript') { + continue; + } + var js = jsDict.get('JS'); + if (!isString(js) && !isStream(js)) { + continue; + } + if (isStream(js)) { + js = bytesToString(js.getBytes()); + } + javaScript.push(stringToPDFString(js)); + } + } + + // Append OpenAction actions to javaScript array + var openactionDict = this.catDict.get('OpenAction'); + if (isDict(openactionDict)) { + var objType = openactionDict.get('Type'); + var actionType = openactionDict.get('S'); + var action = openactionDict.get('N'); + var isPrintAction = (isName(objType) && objType.name === 'Action' && + isName(actionType) && actionType.name === 'Named' && + isName(action) && action.name === 'Print'); + + if (isPrintAction) { + javaScript.push('print(true);'); + } + } + + return shadow(this, 'javaScript', javaScript); + }, + + cleanup: function Catalog_cleanup() { + var promises = []; + this.fontCache.forEach(function (promise) { + promises.push(promise); + }); + return Promise.all(promises).then(function (translatedFonts) { + for (var i = 0, ii = translatedFonts.length; i < ii; i++) { + var font = translatedFonts[i].dict; + delete font.translated; + } + this.fontCache.clear(); + }.bind(this)); + }, + + getPage: function Catalog_getPage(pageIndex) { + if (!(pageIndex in this.pagePromises)) { + this.pagePromises[pageIndex] = this.getPageDict(pageIndex).then( + function (a) { + var dict = a[0]; + var ref = a[1]; + return new Page(this.pdfManager, this.xref, pageIndex, dict, ref, + this.fontCache); + }.bind(this) + ); + } + return this.pagePromises[pageIndex]; + }, + + getPageDict: function Catalog_getPageDict(pageIndex) { + var capability = createPromiseCapability(); + var nodesToVisit = [this.catDict.getRaw('Pages')]; + var currentPageIndex = 0; + var xref = this.xref; + var checkAllKids = false; + + function next() { + while (nodesToVisit.length) { + var currentNode = nodesToVisit.pop(); + + if (isRef(currentNode)) { + xref.fetchAsync(currentNode).then(function (obj) { + if (isDict(obj, 'Page') || (isDict(obj) && !obj.has('Kids'))) { + if (pageIndex === currentPageIndex) { + capability.resolve([obj, currentNode]); + } else { + currentPageIndex++; + next(); + } + return; + } + nodesToVisit.push(obj); + next(); + }, capability.reject); + return; + } + + // Must be a child page dictionary. + assert( + isDict(currentNode), + 'page dictionary kid reference points to wrong type of object' + ); + var count = currentNode.get('Count'); + // If the current node doesn't have any children, avoid getting stuck + // in an empty node further down in the tree (see issue5644.pdf). + if (count === 0) { + checkAllKids = true; + } + // Skip nodes where the page can't be. + if (currentPageIndex + count <= pageIndex) { + currentPageIndex += count; + continue; + } + + var kids = currentNode.get('Kids'); + assert(isArray(kids), 'page dictionary kids object is not an array'); + if (!checkAllKids && count === kids.length) { + // Nodes that don't have the page have been skipped and this is the + // bottom of the tree which means the page requested must be a + // descendant of this pages node. Ideally we would just resolve the + // promise with the page ref here, but there is the case where more + // pages nodes could link to single a page (see issue 3666 pdf). To + // handle this push it back on the queue so if it is a pages node it + // will be descended into. + nodesToVisit = [kids[pageIndex - currentPageIndex]]; + currentPageIndex = pageIndex; + continue; + } else { + for (var last = kids.length - 1; last >= 0; last--) { + nodesToVisit.push(kids[last]); + } + } + } + capability.reject('Page index ' + pageIndex + ' not found.'); + } + next(); + return capability.promise; + }, + + getPageIndex: function Catalog_getPageIndex(ref) { + // The page tree nodes have the count of all the leaves below them. To get + // how many pages are before we just have to walk up the tree and keep + // adding the count of siblings to the left of the node. + var xref = this.xref; + function pagesBeforeRef(kidRef) { + var total = 0; + var parentRef; + return xref.fetchAsync(kidRef).then(function (node) { + if (!node) { + return null; + } + parentRef = node.getRaw('Parent'); + return node.getAsync('Parent'); + }).then(function (parent) { + if (!parent) { + return null; + } + return parent.getAsync('Kids'); + }).then(function (kids) { + if (!kids) { + return null; + } + var kidPromises = []; + var found = false; + for (var i = 0; i < kids.length; i++) { + var kid = kids[i]; + assert(isRef(kid), 'kids must be a ref'); + if (kid.num === kidRef.num) { + found = true; + break; + } + kidPromises.push(xref.fetchAsync(kid).then(function (kid) { + if (kid.has('Count')) { + var count = kid.get('Count'); + total += count; + } else { // page leaf node + total++; + } + })); + } + if (!found) { + error('kid ref not found in parents kids'); + } + return Promise.all(kidPromises).then(function () { + return [total, parentRef]; + }); + }); + } + + var total = 0; + function next(ref) { + return pagesBeforeRef(ref).then(function (args) { + if (!args) { + return total; + } + var count = args[0]; + var parentRef = args[1]; + total += count; + return next(parentRef); + }); + } + + return next(ref); + } + }; + + return Catalog; +})(); + +var XRef = (function XRefClosure() { + function XRef(stream, password) { + this.stream = stream; + this.entries = []; + this.xrefstms = {}; + // prepare the XRef cache + this.cache = []; + this.password = password; + this.stats = { + streamTypes: [], + fontTypes: [] + }; + } + + XRef.prototype = { + setStartXRef: function XRef_setStartXRef(startXRef) { + // Store the starting positions of xref tables as we process them + // so we can recover from missing data errors + this.startXRefQueue = [startXRef]; + }, + + parse: function XRef_parse(recoveryMode) { + var trailerDict; + if (!recoveryMode) { + trailerDict = this.readXRef(); + } else { + warn('Indexing all PDF objects'); + trailerDict = this.indexObjects(); + } + trailerDict.assignXref(this); + this.trailer = trailerDict; + var encrypt = trailerDict.get('Encrypt'); + if (encrypt) { + var ids = trailerDict.get('ID'); + var fileId = (ids && ids.length) ? ids[0] : ''; + this.encrypt = new CipherTransformFactory(encrypt, fileId, + this.password); + } + + // get the root dictionary (catalog) object + if (!(this.root = trailerDict.get('Root'))) { + error('Invalid root reference'); + } + }, + + processXRefTable: function XRef_processXRefTable(parser) { + if (!('tableState' in this)) { + // Stores state of the table as we process it so we can resume + // from middle of table in case of missing data error + this.tableState = { + entryNum: 0, + streamPos: parser.lexer.stream.pos, + parserBuf1: parser.buf1, + parserBuf2: parser.buf2 + }; + } + + var obj = this.readXRefTable(parser); + + // Sanity check + if (!isCmd(obj, 'trailer')) { + error('Invalid XRef table: could not find trailer dictionary'); + } + // Read trailer dictionary, e.g. + // trailer + // << /Size 22 + // /Root 20R + // /Info 10R + // /ID [ <81b14aafa313db63dbd6f981e49f94f4> ] + // >> + // The parser goes through the entire stream << ... >> and provides + // a getter interface for the key-value table + var dict = parser.getObj(); + + // The pdflib PDF generator can generate a nested trailer dictionary + if (!isDict(dict) && dict.dict) { + dict = dict.dict; + } + if (!isDict(dict)) { + error('Invalid XRef table: could not parse trailer dictionary'); + } + delete this.tableState; + + return dict; + }, + + readXRefTable: function XRef_readXRefTable(parser) { + // Example of cross-reference table: + // xref + // 0 1 <-- subsection header (first obj #, obj count) + // 0000000000 65535 f <-- actual object (offset, generation #, f/n) + // 23 2 <-- subsection header ... and so on ... + // 0000025518 00002 n + // 0000025635 00000 n + // trailer + // ... + + var stream = parser.lexer.stream; + var tableState = this.tableState; + stream.pos = tableState.streamPos; + parser.buf1 = tableState.parserBuf1; + parser.buf2 = tableState.parserBuf2; + + // Outer loop is over subsection headers + var obj; + + while (true) { + if (!('firstEntryNum' in tableState) || !('entryCount' in tableState)) { + if (isCmd(obj = parser.getObj(), 'trailer')) { + break; + } + tableState.firstEntryNum = obj; + tableState.entryCount = parser.getObj(); + } + + var first = tableState.firstEntryNum; + var count = tableState.entryCount; + if (!isInt(first) || !isInt(count)) { + error('Invalid XRef table: wrong types in subsection header'); + } + // Inner loop is over objects themselves + for (var i = tableState.entryNum; i < count; i++) { + tableState.streamPos = stream.pos; + tableState.entryNum = i; + tableState.parserBuf1 = parser.buf1; + tableState.parserBuf2 = parser.buf2; + + var entry = {}; + entry.offset = parser.getObj(); + entry.gen = parser.getObj(); + var type = parser.getObj(); + + if (isCmd(type, 'f')) { + entry.free = true; + } else if (isCmd(type, 'n')) { + entry.uncompressed = true; + } + + // Validate entry obj + if (!isInt(entry.offset) || !isInt(entry.gen) || + !(entry.free || entry.uncompressed)) { + error('Invalid entry in XRef subsection: ' + first + ', ' + count); + } + + if (!this.entries[i + first]) { + this.entries[i + first] = entry; + } + } + + tableState.entryNum = 0; + tableState.streamPos = stream.pos; + tableState.parserBuf1 = parser.buf1; + tableState.parserBuf2 = parser.buf2; + delete tableState.firstEntryNum; + delete tableState.entryCount; + } + + // Per issue 3248: hp scanners generate bad XRef + if (first === 1 && this.entries[1] && this.entries[1].free) { + // shifting the entries + this.entries.shift(); + } + + // Sanity check: as per spec, first object must be free + if (this.entries[0] && !this.entries[0].free) { + error('Invalid XRef table: unexpected first object'); + } + return obj; + }, + + processXRefStream: function XRef_processXRefStream(stream) { + if (!('streamState' in this)) { + // Stores state of the stream as we process it so we can resume + // from middle of stream in case of missing data error + var streamParameters = stream.dict; + var byteWidths = streamParameters.get('W'); + var range = streamParameters.get('Index'); + if (!range) { + range = [0, streamParameters.get('Size')]; + } + + this.streamState = { + entryRanges: range, + byteWidths: byteWidths, + entryNum: 0, + streamPos: stream.pos + }; + } + this.readXRefStream(stream); + delete this.streamState; + + return stream.dict; + }, + + readXRefStream: function XRef_readXRefStream(stream) { + var i, j; + var streamState = this.streamState; + stream.pos = streamState.streamPos; + + var byteWidths = streamState.byteWidths; + var typeFieldWidth = byteWidths[0]; + var offsetFieldWidth = byteWidths[1]; + var generationFieldWidth = byteWidths[2]; + + var entryRanges = streamState.entryRanges; + while (entryRanges.length > 0) { + var first = entryRanges[0]; + var n = entryRanges[1]; + + if (!isInt(first) || !isInt(n)) { + error('Invalid XRef range fields: ' + first + ', ' + n); + } + if (!isInt(typeFieldWidth) || !isInt(offsetFieldWidth) || + !isInt(generationFieldWidth)) { + error('Invalid XRef entry fields length: ' + first + ', ' + n); + } + for (i = streamState.entryNum; i < n; ++i) { + streamState.entryNum = i; + streamState.streamPos = stream.pos; + + var type = 0, offset = 0, generation = 0; + for (j = 0; j < typeFieldWidth; ++j) { + type = (type << 8) | stream.getByte(); + } + // if type field is absent, its default value is 1 + if (typeFieldWidth === 0) { + type = 1; + } + for (j = 0; j < offsetFieldWidth; ++j) { + offset = (offset << 8) | stream.getByte(); + } + for (j = 0; j < generationFieldWidth; ++j) { + generation = (generation << 8) | stream.getByte(); + } + var entry = {}; + entry.offset = offset; + entry.gen = generation; + switch (type) { + case 0: + entry.free = true; + break; + case 1: + entry.uncompressed = true; + break; + case 2: + break; + default: + error('Invalid XRef entry type: ' + type); + } + if (!this.entries[first + i]) { + this.entries[first + i] = entry; + } + } + + streamState.entryNum = 0; + streamState.streamPos = stream.pos; + entryRanges.splice(0, 2); + } + }, + + indexObjects: function XRef_indexObjects() { + // Simple scan through the PDF content to find objects, + // trailers and XRef streams. + function readToken(data, offset) { + var token = '', ch = data[offset]; + while (ch !== 13 && ch !== 10) { + if (++offset >= data.length) { + break; + } + token += String.fromCharCode(ch); + ch = data[offset]; + } + return token; + } + function skipUntil(data, offset, what) { + var length = what.length, dataLength = data.length; + var skipped = 0; + // finding byte sequence + while (offset < dataLength) { + var i = 0; + while (i < length && data[offset + i] === what[i]) { + ++i; + } + if (i >= length) { + break; // sequence found + } + offset++; + skipped++; + } + return skipped; + } + var trailerBytes = new Uint8Array([116, 114, 97, 105, 108, 101, 114]); + var startxrefBytes = new Uint8Array([115, 116, 97, 114, 116, 120, 114, + 101, 102]); + var endobjBytes = new Uint8Array([101, 110, 100, 111, 98, 106]); + var xrefBytes = new Uint8Array([47, 88, 82, 101, 102]); + + var stream = this.stream; + stream.pos = 0; + var buffer = stream.getBytes(); + var position = stream.start, length = buffer.length; + var trailers = [], xrefStms = []; + while (position < length) { + var ch = buffer[position]; + if (ch === 32 || ch === 9 || ch === 13 || ch === 10) { + ++position; + continue; + } + if (ch === 37) { // %-comment + do { + ++position; + if (position >= length) { + break; + } + ch = buffer[position]; + } while (ch !== 13 && ch !== 10); + continue; + } + var token = readToken(buffer, position); + var m; + if (token === 'xref') { + position += skipUntil(buffer, position, trailerBytes); + trailers.push(position); + position += skipUntil(buffer, position, startxrefBytes); + } else if ((m = /^(\d+)\s+(\d+)\s+obj\b/.exec(token))) { + this.entries[m[1]] = { + offset: position, + gen: m[2] | 0, + uncompressed: true + }; + + var contentLength = skipUntil(buffer, position, endobjBytes) + 7; + var content = buffer.subarray(position, position + contentLength); + + // checking XRef stream suspect + // (it shall have '/XRef' and next char is not a letter) + var xrefTagOffset = skipUntil(content, 0, xrefBytes); + if (xrefTagOffset < contentLength && + content[xrefTagOffset + 5] < 64) { + xrefStms.push(position); + this.xrefstms[position] = 1; // don't read it recursively + } + + position += contentLength; + } else { + position += token.length + 1; + } + } + // reading XRef streams + var i, ii; + for (i = 0, ii = xrefStms.length; i < ii; ++i) { + this.startXRefQueue.push(xrefStms[i]); + this.readXRef(/* recoveryMode */ true); + } + // finding main trailer + var dict; + for (i = 0, ii = trailers.length; i < ii; ++i) { + stream.pos = trailers[i]; + var parser = new Parser(new Lexer(stream), true, this); + var obj = parser.getObj(); + if (!isCmd(obj, 'trailer')) { + continue; + } + // read the trailer dictionary + if (!isDict(dict = parser.getObj())) { + continue; + } + // taking the first one with 'ID' + if (dict.has('ID')) { + return dict; + } + } + // no tailer with 'ID', taking last one (if exists) + if (dict) { + return dict; + } + // nothing helps + // calling error() would reject worker with an UnknownErrorException. + throw new InvalidPDFException('Invalid PDF structure'); + }, + + readXRef: function XRef_readXRef(recoveryMode) { + var stream = this.stream; + + try { + while (this.startXRefQueue.length) { + var startXRef = this.startXRefQueue[0]; + + stream.pos = startXRef + stream.start; + + var parser = new Parser(new Lexer(stream), true, this); + var obj = parser.getObj(); + var dict; + + // Get dictionary + if (isCmd(obj, 'xref')) { + // Parse end-of-file XRef + dict = this.processXRefTable(parser); + if (!this.topDict) { + this.topDict = dict; + } + + // Recursively get other XRefs 'XRefStm', if any + obj = dict.get('XRefStm'); + if (isInt(obj)) { + var pos = obj; + // ignore previously loaded xref streams + // (possible infinite recursion) + if (!(pos in this.xrefstms)) { + this.xrefstms[pos] = 1; + this.startXRefQueue.push(pos); + } + } + } else if (isInt(obj)) { + // Parse in-stream XRef + if (!isInt(parser.getObj()) || + !isCmd(parser.getObj(), 'obj') || + !isStream(obj = parser.getObj())) { + error('Invalid XRef stream'); + } + dict = this.processXRefStream(obj); + if (!this.topDict) { + this.topDict = dict; + } + if (!dict) { + error('Failed to read XRef stream'); + } + } else { + error('Invalid XRef stream header'); + } + + // Recursively get previous dictionary, if any + obj = dict.get('Prev'); + if (isInt(obj)) { + this.startXRefQueue.push(obj); + } else if (isRef(obj)) { + // The spec says Prev must not be a reference, i.e. "/Prev NNN" + // This is a fallback for non-compliant PDFs, i.e. "/Prev NNN 0 R" + this.startXRefQueue.push(obj.num); + } + + this.startXRefQueue.shift(); + } + + return this.topDict; + } catch (e) { + if (e instanceof MissingDataException) { + throw e; + } + info('(while reading XRef): ' + e); + } + + if (recoveryMode) { + return; + } + throw new XRefParseException(); + }, + + getEntry: function XRef_getEntry(i) { + var xrefEntry = this.entries[i]; + if (xrefEntry && !xrefEntry.free && xrefEntry.offset) { + return xrefEntry; + } + return null; + }, + + fetchIfRef: function XRef_fetchIfRef(obj) { + if (!isRef(obj)) { + return obj; + } + return this.fetch(obj); + }, + + fetch: function XRef_fetch(ref, suppressEncryption) { + assert(isRef(ref), 'ref object is not a reference'); + var num = ref.num; + if (num in this.cache) { + var cacheEntry = this.cache[num]; + return cacheEntry; + } + + var xrefEntry = this.getEntry(num); + + // the referenced entry can be free + if (xrefEntry === null) { + return (this.cache[num] = null); + } + + if (xrefEntry.uncompressed) { + xrefEntry = this.fetchUncompressed(ref, xrefEntry, suppressEncryption); + } else { + xrefEntry = this.fetchCompressed(xrefEntry, suppressEncryption); + } + if (isDict(xrefEntry)){ + xrefEntry.objId = ref.toString(); + } else if (isStream(xrefEntry)) { + xrefEntry.dict.objId = ref.toString(); + } + return xrefEntry; + }, + + fetchUncompressed: function XRef_fetchUncompressed(ref, xrefEntry, + suppressEncryption) { + var gen = ref.gen; + var num = ref.num; + if (xrefEntry.gen !== gen) { + error('inconsistent generation in XRef'); + } + var stream = this.stream.makeSubStream(xrefEntry.offset + + this.stream.start); + var parser = new Parser(new Lexer(stream), true, this); + var obj1 = parser.getObj(); + var obj2 = parser.getObj(); + var obj3 = parser.getObj(); + if (!isInt(obj1) || parseInt(obj1, 10) !== num || + !isInt(obj2) || parseInt(obj2, 10) !== gen || + !isCmd(obj3)) { + error('bad XRef entry'); + } + if (!isCmd(obj3, 'obj')) { + // some bad PDFs use "obj1234" and really mean 1234 + if (obj3.cmd.indexOf('obj') === 0) { + num = parseInt(obj3.cmd.substring(3), 10); + if (!isNaN(num)) { + return num; + } + } + error('bad XRef entry'); + } + if (this.encrypt && !suppressEncryption) { + xrefEntry = parser.getObj(this.encrypt.createCipherTransform(num, gen)); + } else { + xrefEntry = parser.getObj(); + } + if (!isStream(xrefEntry)) { + this.cache[num] = xrefEntry; + } + return xrefEntry; + }, + + fetchCompressed: function XRef_fetchCompressed(xrefEntry, + suppressEncryption) { + var tableOffset = xrefEntry.offset; + var stream = this.fetch(new Ref(tableOffset, 0)); + if (!isStream(stream)) { + error('bad ObjStm stream'); + } + var first = stream.dict.get('First'); + var n = stream.dict.get('N'); + if (!isInt(first) || !isInt(n)) { + error('invalid first and n parameters for ObjStm stream'); + } + var parser = new Parser(new Lexer(stream), false, this); + parser.allowStreams = true; + var i, entries = [], num, nums = []; + // read the object numbers to populate cache + for (i = 0; i < n; ++i) { + num = parser.getObj(); + if (!isInt(num)) { + error('invalid object number in the ObjStm stream: ' + num); + } + nums.push(num); + var offset = parser.getObj(); + if (!isInt(offset)) { + error('invalid object offset in the ObjStm stream: ' + offset); + } + } + // read stream objects for cache + for (i = 0; i < n; ++i) { + entries.push(parser.getObj()); + num = nums[i]; + var entry = this.entries[num]; + if (entry && entry.offset === tableOffset && entry.gen === i) { + this.cache[num] = entries[i]; + } + } + xrefEntry = entries[xrefEntry.gen]; + if (xrefEntry === undefined) { + error('bad XRef entry for compressed object'); + } + return xrefEntry; + }, + + fetchIfRefAsync: function XRef_fetchIfRefAsync(obj) { + if (!isRef(obj)) { + return Promise.resolve(obj); + } + return this.fetchAsync(obj); + }, + + fetchAsync: function XRef_fetchAsync(ref, suppressEncryption) { + var streamManager = this.stream.manager; + var xref = this; + return new Promise(function tryFetch(resolve, reject) { + try { + resolve(xref.fetch(ref, suppressEncryption)); + } catch (e) { + if (e instanceof MissingDataException) { + streamManager.requestRange(e.begin, e.end, function () { + tryFetch(resolve, reject); + }); + return; + } + reject(e); + } + }); + }, + + getCatalogObj: function XRef_getCatalogObj() { + return this.root; + } + }; + + return XRef; +})(); + +/** + * A NameTree is like a Dict but has some advantageous properties, see the + * spec (7.9.6) for more details. + * TODO: implement all the Dict functions and make this more efficent. + */ +var NameTree = (function NameTreeClosure() { + function NameTree(root, xref) { + this.root = root; + this.xref = xref; + } + + NameTree.prototype = { + getAll: function NameTree_getAll() { + var dict = {}; + if (!this.root) { + return dict; + } + var xref = this.xref; + // reading name tree + var processed = new RefSet(); + processed.put(this.root); + var queue = [this.root]; + while (queue.length > 0) { + var i, n; + var obj = xref.fetchIfRef(queue.shift()); + if (!isDict(obj)) { + continue; + } + if (obj.has('Kids')) { + var kids = obj.get('Kids'); + for (i = 0, n = kids.length; i < n; i++) { + var kid = kids[i]; + if (processed.has(kid)) { + error('invalid destinations'); + } + queue.push(kid); + processed.put(kid); + } + continue; + } + var names = obj.get('Names'); + if (names) { + for (i = 0, n = names.length; i < n; i += 2) { + dict[names[i]] = xref.fetchIfRef(names[i + 1]); + } + } + } + return dict; + }, + + get: function NameTree_get(destinationId) { + if (!this.root) { + return null; + } + + var xref = this.xref; + var kidsOrNames = xref.fetchIfRef(this.root); + var loopCount = 0; + var MAX_NAMES_LEVELS = 10; + var l, r, m; + + // Perform a binary search to quickly find the entry that + // contains the named destination we are looking for. + while (kidsOrNames.has('Kids')) { + loopCount++; + if (loopCount > MAX_NAMES_LEVELS) { + warn('Search depth limit for named destionations has been reached.'); + return null; + } + + var kids = kidsOrNames.get('Kids'); + if (!isArray(kids)) { + return null; + } + + l = 0; + r = kids.length - 1; + while (l <= r) { + m = (l + r) >> 1; + var kid = xref.fetchIfRef(kids[m]); + var limits = kid.get('Limits'); + + if (destinationId < limits[0]) { + r = m - 1; + } else if (destinationId > limits[1]) { + l = m + 1; + } else { + kidsOrNames = xref.fetchIfRef(kids[m]); + break; + } + } + if (l > r) { + return null; + } + } + + // If we get here, then we have found the right entry. Now + // go through the named destinations in the Named dictionary + // until we find the exact destination we're looking for. + var names = kidsOrNames.get('Names'); + if (isArray(names)) { + // Perform a binary search to reduce the lookup time. + l = 0; + r = names.length - 2; + while (l <= r) { + // Check only even indices (0, 2, 4, ...) because the + // odd indices contain the actual D array. + m = (l + r) & ~1; + if (destinationId < names[m]) { + r = m - 2; + } else if (destinationId > names[m]) { + l = m + 2; + } else { + return xref.fetchIfRef(names[m + 1]); + } + } + } + return null; + } + }; + return NameTree; +})(); + +/** + * "A PDF file can refer to the contents of another file by using a File + * Specification (PDF 1.1)", see the spec (7.11) for more details. + * NOTE: Only embedded files are supported (as part of the attachments support) + * TODO: support the 'URL' file system (with caching if !/V), portable + * collections attributes and related files (/RF) + */ +var FileSpec = (function FileSpecClosure() { + function FileSpec(root, xref) { + if (!root || !isDict(root)) { + return; + } + this.xref = xref; + this.root = root; + if (root.has('FS')) { + this.fs = root.get('FS'); + } + this.description = root.has('Desc') ? + stringToPDFString(root.get('Desc')) : + ''; + if (root.has('RF')) { + warn('Related file specifications are not supported'); + } + this.contentAvailable = true; + if (!root.has('EF')) { + this.contentAvailable = false; + warn('Non-embedded file specifications are not supported'); + } + } + + function pickPlatformItem(dict) { + // Look for the filename in this order: + // UF, F, Unix, Mac, DOS + if (dict.has('UF')) { + return dict.get('UF'); + } else if (dict.has('F')) { + return dict.get('F'); + } else if (dict.has('Unix')) { + return dict.get('Unix'); + } else if (dict.has('Mac')) { + return dict.get('Mac'); + } else if (dict.has('DOS')) { + return dict.get('DOS'); + } else { + return null; + } + } + + FileSpec.prototype = { + get filename() { + if (!this._filename && this.root) { + var filename = pickPlatformItem(this.root) || 'unnamed'; + this._filename = stringToPDFString(filename). + replace(/\\\\/g, '\\'). + replace(/\\\//g, '/'). + replace(/\\/g, '/'); + } + return this._filename; + }, + get content() { + if (!this.contentAvailable) { + return null; + } + if (!this.contentRef && this.root) { + this.contentRef = pickPlatformItem(this.root.get('EF')); + } + var content = null; + if (this.contentRef) { + var xref = this.xref; + var fileObj = xref.fetchIfRef(this.contentRef); + if (fileObj && isStream(fileObj)) { + content = fileObj.getBytes(); + } else { + warn('Embedded file specification points to non-existing/invalid ' + + 'content'); + } + } else { + warn('Embedded file specification does not have a content'); + } + return content; + }, + get serializable() { + return { + filename: this.filename, + content: this.content + }; + } + }; + return FileSpec; +})(); + +/** + * A helper for loading missing data in object graphs. It traverses the graph + * depth first and queues up any objects that have missing data. Once it has + * has traversed as many objects that are available it attempts to bundle the + * missing data requests and then resume from the nodes that weren't ready. + * + * NOTE: It provides protection from circular references by keeping track of + * of loaded references. However, you must be careful not to load any graphs + * that have references to the catalog or other pages since that will cause the + * entire PDF document object graph to be traversed. + */ +var ObjectLoader = (function() { + function mayHaveChildren(value) { + return isRef(value) || isDict(value) || isArray(value) || isStream(value); + } + + function addChildren(node, nodesToVisit) { + var value; + if (isDict(node) || isStream(node)) { + var map; + if (isDict(node)) { + map = node.map; + } else { + map = node.dict.map; + } + for (var key in map) { + value = map[key]; + if (mayHaveChildren(value)) { + nodesToVisit.push(value); + } + } + } else if (isArray(node)) { + for (var i = 0, ii = node.length; i < ii; i++) { + value = node[i]; + if (mayHaveChildren(value)) { + nodesToVisit.push(value); + } + } + } + } + + function ObjectLoader(obj, keys, xref) { + this.obj = obj; + this.keys = keys; + this.xref = xref; + this.refSet = null; + } + + ObjectLoader.prototype = { + load: function ObjectLoader_load() { + var keys = this.keys; + this.capability = createPromiseCapability(); + // Don't walk the graph if all the data is already loaded. + if (!(this.xref.stream instanceof ChunkedStream) || + this.xref.stream.getMissingChunks().length === 0) { + this.capability.resolve(); + return this.capability.promise; + } + + this.refSet = new RefSet(); + // Setup the initial nodes to visit. + var nodesToVisit = []; + for (var i = 0; i < keys.length; i++) { + nodesToVisit.push(this.obj[keys[i]]); + } + + this.walk(nodesToVisit); + return this.capability.promise; + }, + + walk: function ObjectLoader_walk(nodesToVisit) { + var nodesToRevisit = []; + var pendingRequests = []; + // DFS walk of the object graph. + while (nodesToVisit.length) { + var currentNode = nodesToVisit.pop(); + + // Only references or chunked streams can cause missing data exceptions. + if (isRef(currentNode)) { + // Skip nodes that have already been visited. + if (this.refSet.has(currentNode)) { + continue; + } + try { + var ref = currentNode; + this.refSet.put(ref); + currentNode = this.xref.fetch(currentNode); + } catch (e) { + if (!(e instanceof MissingDataException)) { + throw e; + } + nodesToRevisit.push(currentNode); + pendingRequests.push({ begin: e.begin, end: e.end }); + } + } + if (currentNode && currentNode.getBaseStreams) { + var baseStreams = currentNode.getBaseStreams(); + var foundMissingData = false; + for (var i = 0; i < baseStreams.length; i++) { + var stream = baseStreams[i]; + if (stream.getMissingChunks && stream.getMissingChunks().length) { + foundMissingData = true; + pendingRequests.push({ + begin: stream.start, + end: stream.end + }); + } + } + if (foundMissingData) { + nodesToRevisit.push(currentNode); + } + } + + addChildren(currentNode, nodesToVisit); + } + + if (pendingRequests.length) { + this.xref.stream.manager.requestRanges(pendingRequests, + function pendingRequestCallback() { + nodesToVisit = nodesToRevisit; + for (var i = 0; i < nodesToRevisit.length; i++) { + var node = nodesToRevisit[i]; + // Remove any reference nodes from the currrent refset so they + // aren't skipped when we revist them. + if (isRef(node)) { + this.refSet.remove(node); + } + } + this.walk(nodesToVisit); + }.bind(this)); + return; + } + // Everything is loaded. + this.refSet = null; + this.capability.resolve(); + } + }; + + return ObjectLoader; +})(); + + +var ISOAdobeCharset = [ + '.notdef', 'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', + 'percent', 'ampersand', 'quoteright', 'parenleft', 'parenright', + 'asterisk', 'plus', 'comma', 'hyphen', 'period', 'slash', 'zero', + 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', + 'nine', 'colon', 'semicolon', 'less', 'equal', 'greater', 'question', + 'at', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', + 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', + 'bracketleft', 'backslash', 'bracketright', 'asciicircum', 'underscore', + 'quoteleft', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', + 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', + 'braceleft', 'bar', 'braceright', 'asciitilde', 'exclamdown', 'cent', + 'sterling', 'fraction', 'yen', 'florin', 'section', 'currency', + 'quotesingle', 'quotedblleft', 'guillemotleft', 'guilsinglleft', + 'guilsinglright', 'fi', 'fl', 'endash', 'dagger', 'daggerdbl', + 'periodcentered', 'paragraph', 'bullet', 'quotesinglbase', + 'quotedblbase', 'quotedblright', 'guillemotright', 'ellipsis', + 'perthousand', 'questiondown', 'grave', 'acute', 'circumflex', 'tilde', + 'macron', 'breve', 'dotaccent', 'dieresis', 'ring', 'cedilla', + 'hungarumlaut', 'ogonek', 'caron', 'emdash', 'AE', 'ordfeminine', + 'Lslash', 'Oslash', 'OE', 'ordmasculine', 'ae', 'dotlessi', 'lslash', + 'oslash', 'oe', 'germandbls', 'onesuperior', 'logicalnot', 'mu', + 'trademark', 'Eth', 'onehalf', 'plusminus', 'Thorn', 'onequarter', + 'divide', 'brokenbar', 'degree', 'thorn', 'threequarters', 'twosuperior', + 'registered', 'minus', 'eth', 'multiply', 'threesuperior', 'copyright', + 'Aacute', 'Acircumflex', 'Adieresis', 'Agrave', 'Aring', 'Atilde', + 'Ccedilla', 'Eacute', 'Ecircumflex', 'Edieresis', 'Egrave', 'Iacute', + 'Icircumflex', 'Idieresis', 'Igrave', 'Ntilde', 'Oacute', 'Ocircumflex', + 'Odieresis', 'Ograve', 'Otilde', 'Scaron', 'Uacute', 'Ucircumflex', + 'Udieresis', 'Ugrave', 'Yacute', 'Ydieresis', 'Zcaron', 'aacute', + 'acircumflex', 'adieresis', 'agrave', 'aring', 'atilde', 'ccedilla', + 'eacute', 'ecircumflex', 'edieresis', 'egrave', 'iacute', 'icircumflex', + 'idieresis', 'igrave', 'ntilde', 'oacute', 'ocircumflex', 'odieresis', + 'ograve', 'otilde', 'scaron', 'uacute', 'ucircumflex', 'udieresis', + 'ugrave', 'yacute', 'ydieresis', 'zcaron' +]; + +var ExpertCharset = [ + '.notdef', 'space', 'exclamsmall', 'Hungarumlautsmall', 'dollaroldstyle', + 'dollarsuperior', 'ampersandsmall', 'Acutesmall', 'parenleftsuperior', + 'parenrightsuperior', 'twodotenleader', 'onedotenleader', 'comma', + 'hyphen', 'period', 'fraction', 'zerooldstyle', 'oneoldstyle', + 'twooldstyle', 'threeoldstyle', 'fouroldstyle', 'fiveoldstyle', + 'sixoldstyle', 'sevenoldstyle', 'eightoldstyle', 'nineoldstyle', + 'colon', 'semicolon', 'commasuperior', 'threequartersemdash', + 'periodsuperior', 'questionsmall', 'asuperior', 'bsuperior', + 'centsuperior', 'dsuperior', 'esuperior', 'isuperior', 'lsuperior', + 'msuperior', 'nsuperior', 'osuperior', 'rsuperior', 'ssuperior', + 'tsuperior', 'ff', 'fi', 'fl', 'ffi', 'ffl', 'parenleftinferior', + 'parenrightinferior', 'Circumflexsmall', 'hyphensuperior', 'Gravesmall', + 'Asmall', 'Bsmall', 'Csmall', 'Dsmall', 'Esmall', 'Fsmall', 'Gsmall', + 'Hsmall', 'Ismall', 'Jsmall', 'Ksmall', 'Lsmall', 'Msmall', 'Nsmall', + 'Osmall', 'Psmall', 'Qsmall', 'Rsmall', 'Ssmall', 'Tsmall', 'Usmall', + 'Vsmall', 'Wsmall', 'Xsmall', 'Ysmall', 'Zsmall', 'colonmonetary', + 'onefitted', 'rupiah', 'Tildesmall', 'exclamdownsmall', 'centoldstyle', + 'Lslashsmall', 'Scaronsmall', 'Zcaronsmall', 'Dieresissmall', + 'Brevesmall', 'Caronsmall', 'Dotaccentsmall', 'Macronsmall', + 'figuredash', 'hypheninferior', 'Ogoneksmall', 'Ringsmall', + 'Cedillasmall', 'onequarter', 'onehalf', 'threequarters', + 'questiondownsmall', 'oneeighth', 'threeeighths', 'fiveeighths', + 'seveneighths', 'onethird', 'twothirds', 'zerosuperior', 'onesuperior', + 'twosuperior', 'threesuperior', 'foursuperior', 'fivesuperior', + 'sixsuperior', 'sevensuperior', 'eightsuperior', 'ninesuperior', + 'zeroinferior', 'oneinferior', 'twoinferior', 'threeinferior', + 'fourinferior', 'fiveinferior', 'sixinferior', 'seveninferior', + 'eightinferior', 'nineinferior', 'centinferior', 'dollarinferior', + 'periodinferior', 'commainferior', 'Agravesmall', 'Aacutesmall', + 'Acircumflexsmall', 'Atildesmall', 'Adieresissmall', 'Aringsmall', + 'AEsmall', 'Ccedillasmall', 'Egravesmall', 'Eacutesmall', + 'Ecircumflexsmall', 'Edieresissmall', 'Igravesmall', 'Iacutesmall', + 'Icircumflexsmall', 'Idieresissmall', 'Ethsmall', 'Ntildesmall', + 'Ogravesmall', 'Oacutesmall', 'Ocircumflexsmall', 'Otildesmall', + 'Odieresissmall', 'OEsmall', 'Oslashsmall', 'Ugravesmall', 'Uacutesmall', + 'Ucircumflexsmall', 'Udieresissmall', 'Yacutesmall', 'Thornsmall', + 'Ydieresissmall' +]; + +var ExpertSubsetCharset = [ + '.notdef', 'space', 'dollaroldstyle', 'dollarsuperior', + 'parenleftsuperior', 'parenrightsuperior', 'twodotenleader', + 'onedotenleader', 'comma', 'hyphen', 'period', 'fraction', + 'zerooldstyle', 'oneoldstyle', 'twooldstyle', 'threeoldstyle', + 'fouroldstyle', 'fiveoldstyle', 'sixoldstyle', 'sevenoldstyle', + 'eightoldstyle', 'nineoldstyle', 'colon', 'semicolon', 'commasuperior', + 'threequartersemdash', 'periodsuperior', 'asuperior', 'bsuperior', + 'centsuperior', 'dsuperior', 'esuperior', 'isuperior', 'lsuperior', + 'msuperior', 'nsuperior', 'osuperior', 'rsuperior', 'ssuperior', + 'tsuperior', 'ff', 'fi', 'fl', 'ffi', 'ffl', 'parenleftinferior', + 'parenrightinferior', 'hyphensuperior', 'colonmonetary', 'onefitted', + 'rupiah', 'centoldstyle', 'figuredash', 'hypheninferior', 'onequarter', + 'onehalf', 'threequarters', 'oneeighth', 'threeeighths', 'fiveeighths', + 'seveneighths', 'onethird', 'twothirds', 'zerosuperior', 'onesuperior', + 'twosuperior', 'threesuperior', 'foursuperior', 'fivesuperior', + 'sixsuperior', 'sevensuperior', 'eightsuperior', 'ninesuperior', + 'zeroinferior', 'oneinferior', 'twoinferior', 'threeinferior', + 'fourinferior', 'fiveinferior', 'sixinferior', 'seveninferior', + 'eightinferior', 'nineinferior', 'centinferior', 'dollarinferior', + 'periodinferior', 'commainferior' +]; + + +var DEFAULT_ICON_SIZE = 22; // px +var SUPPORTED_TYPES = ['Link', 'Text', 'Widget']; + +var Annotation = (function AnnotationClosure() { + // 12.5.5: Algorithm: Appearance streams + function getTransformMatrix(rect, bbox, matrix) { + var bounds = Util.getAxialAlignedBoundingBox(bbox, matrix); + var minX = bounds[0]; + var minY = bounds[1]; + var maxX = bounds[2]; + var maxY = bounds[3]; + + if (minX === maxX || minY === maxY) { + // From real-life file, bbox was [0, 0, 0, 0]. In this case, + // just apply the transform for rect + return [1, 0, 0, 1, rect[0], rect[1]]; + } + + var xRatio = (rect[2] - rect[0]) / (maxX - minX); + var yRatio = (rect[3] - rect[1]) / (maxY - minY); + return [ + xRatio, + 0, + 0, + yRatio, + rect[0] - minX * xRatio, + rect[1] - minY * yRatio + ]; + } + + function getDefaultAppearance(dict) { + var appearanceState = dict.get('AP'); + if (!isDict(appearanceState)) { + return; + } + + var appearance; + var appearances = appearanceState.get('N'); + if (isDict(appearances)) { + var as = dict.get('AS'); + if (as && appearances.has(as.name)) { + appearance = appearances.get(as.name); + } + } else { + appearance = appearances; + } + return appearance; + } + + function Annotation(params) { + var dict = params.dict; + var data = this.data = {}; + + data.subtype = dict.get('Subtype').name; + var rect = dict.get('Rect') || [0, 0, 0, 0]; + data.rect = Util.normalizeRect(rect); + data.annotationFlags = dict.get('F'); + + var color = dict.get('C'); + if (!color) { + // The PDF spec does not mention how a missing color array is interpreted. + // Adobe Reader seems to default to black in this case. + data.color = [0, 0, 0]; + } else if (isArray(color)) { + switch (color.length) { + case 0: + // Empty array denotes transparent border. + data.color = null; + break; + case 1: + // TODO: implement DeviceGray + break; + case 3: + data.color = color; + break; + case 4: + // TODO: implement DeviceCMYK + break; + } + } + + // Some types of annotations have border style dict which has more + // info than the border array + if (dict.has('BS')) { + var borderStyle = dict.get('BS'); + data.borderWidth = borderStyle.has('W') ? borderStyle.get('W') : 1; + } else { + var borderArray = dict.get('Border') || [0, 0, 1]; + data.borderWidth = borderArray[2] || 0; + + // TODO: implement proper support for annotations with line dash patterns. + var dashArray = borderArray[3]; + if (data.borderWidth > 0 && dashArray) { + if (!isArray(dashArray)) { + // Ignore the border if dashArray is not actually an array, + // this is consistent with the behaviour in Adobe Reader. + data.borderWidth = 0; + } else { + var dashArrayLength = dashArray.length; + if (dashArrayLength > 0) { + // According to the PDF specification: the elements in a dashArray + // shall be numbers that are nonnegative and not all equal to zero. + var isInvalid = false; + var numPositive = 0; + for (var i = 0; i < dashArrayLength; i++) { + var validNumber = (+dashArray[i] >= 0); + if (!validNumber) { + isInvalid = true; + break; + } else if (dashArray[i] > 0) { + numPositive++; + } + } + if (isInvalid || numPositive === 0) { + data.borderWidth = 0; + } + } + } + } + } + + this.appearance = getDefaultAppearance(dict); + data.hasAppearance = !!this.appearance; + data.id = params.ref.num; + } + + Annotation.prototype = { + + getData: function Annotation_getData() { + return this.data; + }, + + isInvisible: function Annotation_isInvisible() { + var data = this.data; + if (data && SUPPORTED_TYPES.indexOf(data.subtype) !== -1) { + return false; + } else { + return !!(data && + data.annotationFlags && // Default: not invisible + data.annotationFlags & 0x1); // Invisible + } + }, + + isViewable: function Annotation_isViewable() { + var data = this.data; + return !!(!this.isInvisible() && + data && + (!data.annotationFlags || + !(data.annotationFlags & 0x22)) && // Hidden or NoView + data.rect); // rectangle is necessary + }, + + isPrintable: function Annotation_isPrintable() { + var data = this.data; + return !!(!this.isInvisible() && + data && + data.annotationFlags && // Default: not printable + data.annotationFlags & 0x4 && // Print + !(data.annotationFlags & 0x2) && // Hidden + data.rect); // rectangle is necessary + }, + + loadResources: function Annotation_loadResources(keys) { + return new Promise(function (resolve, reject) { + this.appearance.dict.getAsync('Resources').then(function (resources) { + if (!resources) { + resolve(); + return; + } + var objectLoader = new ObjectLoader(resources.map, + keys, + resources.xref); + objectLoader.load().then(function() { + resolve(resources); + }, reject); + }, reject); + }.bind(this)); + }, + + getOperatorList: function Annotation_getOperatorList(evaluator) { + + if (!this.appearance) { + return Promise.resolve(new OperatorList()); + } + + var data = this.data; + + var appearanceDict = this.appearance.dict; + var resourcesPromise = this.loadResources([ + 'ExtGState', + 'ColorSpace', + 'Pattern', + 'Shading', + 'XObject', + 'Font' + // ProcSet + // Properties + ]); + var bbox = appearanceDict.get('BBox') || [0, 0, 1, 1]; + var matrix = appearanceDict.get('Matrix') || [1, 0, 0, 1, 0 ,0]; + var transform = getTransformMatrix(data.rect, bbox, matrix); + var self = this; + + return resourcesPromise.then(function(resources) { + var opList = new OperatorList(); + opList.addOp(OPS.beginAnnotation, [data.rect, transform, matrix]); + return evaluator.getOperatorList(self.appearance, resources, opList). + then(function () { + opList.addOp(OPS.endAnnotation, []); + self.appearance.reset(); + return opList; + }); + }); + } + }; + + Annotation.getConstructor = + function Annotation_getConstructor(subtype, fieldType) { + + if (!subtype) { + return; + } + + // TODO(mack): Implement FreeText annotations + if (subtype === 'Link') { + return LinkAnnotation; + } else if (subtype === 'Text') { + return TextAnnotation; + } else if (subtype === 'Widget') { + if (!fieldType) { + return; + } + + if (fieldType === 'Tx') { + return TextWidgetAnnotation; + } else { + return WidgetAnnotation; + } + } else { + return Annotation; + } + }; + + Annotation.fromRef = function Annotation_fromRef(xref, ref) { + + var dict = xref.fetchIfRef(ref); + if (!isDict(dict)) { + return; + } + + var subtype = dict.get('Subtype'); + subtype = isName(subtype) ? subtype.name : ''; + if (!subtype) { + return; + } + + var fieldType = Util.getInheritableProperty(dict, 'FT'); + fieldType = isName(fieldType) ? fieldType.name : ''; + + var Constructor = Annotation.getConstructor(subtype, fieldType); + if (!Constructor) { + return; + } + + var params = { + dict: dict, + ref: ref, + }; + + var annotation = new Constructor(params); + + if (annotation.isViewable() || annotation.isPrintable()) { + return annotation; + } else { + if (SUPPORTED_TYPES.indexOf(subtype) === -1) { + warn('unimplemented annotation type: ' + subtype); + } + } + }; + + Annotation.appendToOperatorList = function Annotation_appendToOperatorList( + annotations, opList, pdfManager, partialEvaluator, intent) { + + function reject(e) { + annotationsReadyCapability.reject(e); + } + + var annotationsReadyCapability = createPromiseCapability(); + + var annotationPromises = []; + for (var i = 0, n = annotations.length; i < n; ++i) { + if (intent === 'display' && annotations[i].isViewable() || + intent === 'print' && annotations[i].isPrintable()) { + annotationPromises.push( + annotations[i].getOperatorList(partialEvaluator)); + } + } + Promise.all(annotationPromises).then(function(datas) { + opList.addOp(OPS.beginAnnotations, []); + for (var i = 0, n = datas.length; i < n; ++i) { + var annotOpList = datas[i]; + opList.addOpList(annotOpList); + } + opList.addOp(OPS.endAnnotations, []); + annotationsReadyCapability.resolve(); + }, reject); + + return annotationsReadyCapability.promise; + }; + + return Annotation; +})(); + +var WidgetAnnotation = (function WidgetAnnotationClosure() { + + function WidgetAnnotation(params) { + Annotation.call(this, params); + + var dict = params.dict; + var data = this.data; + + data.fieldValue = stringToPDFString( + Util.getInheritableProperty(dict, 'V') || ''); + data.alternativeText = stringToPDFString(dict.get('TU') || ''); + data.defaultAppearance = Util.getInheritableProperty(dict, 'DA') || ''; + var fieldType = Util.getInheritableProperty(dict, 'FT'); + data.fieldType = isName(fieldType) ? fieldType.name : ''; + data.fieldFlags = Util.getInheritableProperty(dict, 'Ff') || 0; + this.fieldResources = Util.getInheritableProperty(dict, 'DR') || Dict.empty; + + // Building the full field name by collecting the field and + // its ancestors 'T' data and joining them using '.'. + var fieldName = []; + var namedItem = dict; + var ref = params.ref; + while (namedItem) { + var parent = namedItem.get('Parent'); + var parentRef = namedItem.getRaw('Parent'); + var name = namedItem.get('T'); + if (name) { + fieldName.unshift(stringToPDFString(name)); + } else if (parent && ref) { + // The field name is absent, that means more than one field + // with the same name may exist. Replacing the empty name + // with the '`' plus index in the parent's 'Kids' array. + // This is not in the PDF spec but necessary to id the + // the input controls. + var kids = parent.get('Kids'); + var j, jj; + for (j = 0, jj = kids.length; j < jj; j++) { + var kidRef = kids[j]; + if (kidRef.num === ref.num && kidRef.gen === ref.gen) { + break; + } + } + fieldName.unshift('`' + j); + } + namedItem = parent; + ref = parentRef; + } + data.fullName = fieldName.join('.'); + } + + var parent = Annotation.prototype; + Util.inherit(WidgetAnnotation, Annotation, { + isViewable: function WidgetAnnotation_isViewable() { + if (this.data.fieldType === 'Sig') { + warn('unimplemented annotation type: Widget signature'); + return false; + } + + return parent.isViewable.call(this); + } + }); + + return WidgetAnnotation; +})(); + +var TextWidgetAnnotation = (function TextWidgetAnnotationClosure() { + function TextWidgetAnnotation(params) { + WidgetAnnotation.call(this, params); + + this.data.textAlignment = Util.getInheritableProperty(params.dict, 'Q'); + this.data.annotationType = AnnotationType.WIDGET; + this.data.hasHtml = !this.data.hasAppearance && !!this.data.fieldValue; + } + + Util.inherit(TextWidgetAnnotation, WidgetAnnotation, { + getOperatorList: function TextWidgetAnnotation_getOperatorList(evaluator) { + if (this.appearance) { + return Annotation.prototype.getOperatorList.call(this, evaluator); + } + + var opList = new OperatorList(); + var data = this.data; + + // Even if there is an appearance stream, ignore it. This is the + // behaviour used by Adobe Reader. + if (!data.defaultAppearance) { + return Promise.resolve(opList); + } + + var stream = new Stream(stringToBytes(data.defaultAppearance)); + return evaluator.getOperatorList(stream, this.fieldResources, opList). + then(function () { + return opList; + }); + } + }); + + return TextWidgetAnnotation; +})(); + +var InteractiveAnnotation = (function InteractiveAnnotationClosure() { + function InteractiveAnnotation(params) { + Annotation.call(this, params); + + this.data.hasHtml = true; + } + + Util.inherit(InteractiveAnnotation, Annotation, { }); + + return InteractiveAnnotation; +})(); + +var TextAnnotation = (function TextAnnotationClosure() { + function TextAnnotation(params) { + InteractiveAnnotation.call(this, params); + + var dict = params.dict; + var data = this.data; + + var content = dict.get('Contents'); + var title = dict.get('T'); + data.annotationType = AnnotationType.TEXT; + data.content = stringToPDFString(content || ''); + data.title = stringToPDFString(title || ''); + + if (data.hasAppearance) { + data.name = 'NoIcon'; + } else { + data.rect[1] = data.rect[3] - DEFAULT_ICON_SIZE; + data.rect[2] = data.rect[0] + DEFAULT_ICON_SIZE; + data.name = dict.has('Name') ? dict.get('Name').name : 'Note'; + } + + if (dict.has('C')) { + data.hasBgColor = true; + } + } + + Util.inherit(TextAnnotation, InteractiveAnnotation, { }); + + return TextAnnotation; +})(); + +var LinkAnnotation = (function LinkAnnotationClosure() { + function LinkAnnotation(params) { + InteractiveAnnotation.call(this, params); + + var dict = params.dict; + var data = this.data; + data.annotationType = AnnotationType.LINK; + + var action = dict.get('A'); + if (action && isDict(action)) { + var linkType = action.get('S').name; + if (linkType === 'URI') { + var url = action.get('URI'); + if (isName(url)) { + // Some bad PDFs do not put parentheses around relative URLs. + url = '/' + url.name; + } else if (url) { + url = addDefaultProtocolToUrl(url); + } + // TODO: pdf spec mentions urls can be relative to a Base + // entry in the dictionary. + if (!isValidUrl(url, false)) { + url = ''; + } + data.url = url; + } else if (linkType === 'GoTo') { + data.dest = action.get('D'); + } else if (linkType === 'GoToR') { + var urlDict = action.get('F'); + if (isDict(urlDict)) { + // We assume that the 'url' is a Filspec dictionary + // and fetch the url without checking any further + url = urlDict.get('F') || ''; + } + + // TODO: pdf reference says that GoToR + // can also have 'NewWindow' attribute + if (!isValidUrl(url, false)) { + url = ''; + } + data.url = url; + data.dest = action.get('D'); + } else if (linkType === 'Named') { + data.action = action.get('N').name; + } else { + warn('unrecognized link type: ' + linkType); + } + } else if (dict.has('Dest')) { + // simple destination link + var dest = dict.get('Dest'); + data.dest = isName(dest) ? dest.name : dest; + } + } + + // Lets URLs beginning with 'www.' default to using the 'http://' protocol. + function addDefaultProtocolToUrl(url) { + if (url && url.indexOf('www.') === 0) { + return ('http://' + url); + } + return url; + } + + Util.inherit(LinkAnnotation, InteractiveAnnotation, { }); + + return LinkAnnotation; +})(); + + +var PDFFunction = (function PDFFunctionClosure() { + var CONSTRUCT_SAMPLED = 0; + var CONSTRUCT_INTERPOLATED = 2; + var CONSTRUCT_STICHED = 3; + var CONSTRUCT_POSTSCRIPT = 4; + + return { + getSampleArray: function PDFFunction_getSampleArray(size, outputSize, bps, + str) { + var i, ii; + var length = 1; + for (i = 0, ii = size.length; i < ii; i++) { + length *= size[i]; + } + length *= outputSize; + + var array = new Array(length); + var codeSize = 0; + var codeBuf = 0; + // 32 is a valid bps so shifting won't work + var sampleMul = 1.0 / (Math.pow(2.0, bps) - 1); + + var strBytes = str.getBytes((length * bps + 7) / 8); + var strIdx = 0; + for (i = 0; i < length; i++) { + while (codeSize < bps) { + codeBuf <<= 8; + codeBuf |= strBytes[strIdx++]; + codeSize += 8; + } + codeSize -= bps; + array[i] = (codeBuf >> codeSize) * sampleMul; + codeBuf &= (1 << codeSize) - 1; + } + return array; + }, + + getIR: function PDFFunction_getIR(xref, fn) { + var dict = fn.dict; + if (!dict) { + dict = fn; + } + + var types = [this.constructSampled, + null, + this.constructInterpolated, + this.constructStiched, + this.constructPostScript]; + + var typeNum = dict.get('FunctionType'); + var typeFn = types[typeNum]; + if (!typeFn) { + error('Unknown type of function'); + } + + return typeFn.call(this, fn, dict, xref); + }, + + fromIR: function PDFFunction_fromIR(IR) { + var type = IR[0]; + switch (type) { + case CONSTRUCT_SAMPLED: + return this.constructSampledFromIR(IR); + case CONSTRUCT_INTERPOLATED: + return this.constructInterpolatedFromIR(IR); + case CONSTRUCT_STICHED: + return this.constructStichedFromIR(IR); + //case CONSTRUCT_POSTSCRIPT: + default: + return this.constructPostScriptFromIR(IR); + } + }, + + parse: function PDFFunction_parse(xref, fn) { + var IR = this.getIR(xref, fn); + return this.fromIR(IR); + }, + + parseArray: function PDFFunction_parseArray(xref, fnObj) { + if (!isArray(fnObj)) { + // not an array -- parsing as regular function + return this.parse(xref, fnObj); + } + + var fnArray = []; + for (var j = 0, jj = fnObj.length; j < jj; j++) { + var obj = xref.fetchIfRef(fnObj[j]); + fnArray.push(PDFFunction.parse(xref, obj)); + } + return function (src, srcOffset, dest, destOffset) { + for (var i = 0, ii = fnArray.length; i < ii; i++) { + fnArray[i](src, srcOffset, dest, destOffset + i); + } + }; + }, + + constructSampled: function PDFFunction_constructSampled(str, dict) { + function toMultiArray(arr) { + var inputLength = arr.length; + var out = []; + var index = 0; + for (var i = 0; i < inputLength; i += 2) { + out[index] = [arr[i], arr[i + 1]]; + ++index; + } + return out; + } + var domain = dict.get('Domain'); + var range = dict.get('Range'); + + if (!domain || !range) { + error('No domain or range'); + } + + var inputSize = domain.length / 2; + var outputSize = range.length / 2; + + domain = toMultiArray(domain); + range = toMultiArray(range); + + var size = dict.get('Size'); + var bps = dict.get('BitsPerSample'); + var order = dict.get('Order') || 1; + if (order !== 1) { + // No description how cubic spline interpolation works in PDF32000:2008 + // As in poppler, ignoring order, linear interpolation may work as good + info('No support for cubic spline interpolation: ' + order); + } + + var encode = dict.get('Encode'); + if (!encode) { + encode = []; + for (var i = 0; i < inputSize; ++i) { + encode.push(0); + encode.push(size[i] - 1); + } + } + encode = toMultiArray(encode); + + var decode = dict.get('Decode'); + if (!decode) { + decode = range; + } else { + decode = toMultiArray(decode); + } + + var samples = this.getSampleArray(size, outputSize, bps, str); + + return [ + CONSTRUCT_SAMPLED, inputSize, domain, encode, decode, samples, size, + outputSize, Math.pow(2, bps) - 1, range + ]; + }, + + constructSampledFromIR: function PDFFunction_constructSampledFromIR(IR) { + // See chapter 3, page 109 of the PDF reference + function interpolate(x, xmin, xmax, ymin, ymax) { + return ymin + ((x - xmin) * ((ymax - ymin) / (xmax - xmin))); + } + + return function constructSampledFromIRResult(src, srcOffset, + dest, destOffset) { + // See chapter 3, page 110 of the PDF reference. + var m = IR[1]; + var domain = IR[2]; + var encode = IR[3]; + var decode = IR[4]; + var samples = IR[5]; + var size = IR[6]; + var n = IR[7]; + //var mask = IR[8]; + var range = IR[9]; + + // Building the cube vertices: its part and sample index + // http://rjwagner49.com/Mathematics/Interpolation.pdf + var cubeVertices = 1 << m; + var cubeN = new Float64Array(cubeVertices); + var cubeVertex = new Uint32Array(cubeVertices); + var i, j; + for (j = 0; j < cubeVertices; j++) { + cubeN[j] = 1; + } + + var k = n, pos = 1; + // Map x_i to y_j for 0 <= i < m using the sampled function. + for (i = 0; i < m; ++i) { + // x_i' = min(max(x_i, Domain_2i), Domain_2i+1) + var domain_2i = domain[i][0]; + var domain_2i_1 = domain[i][1]; + var xi = Math.min(Math.max(src[srcOffset +i], domain_2i), + domain_2i_1); + + // e_i = Interpolate(x_i', Domain_2i, Domain_2i+1, + // Encode_2i, Encode_2i+1) + var e = interpolate(xi, domain_2i, domain_2i_1, + encode[i][0], encode[i][1]); + + // e_i' = min(max(e_i, 0), Size_i - 1) + var size_i = size[i]; + e = Math.min(Math.max(e, 0), size_i - 1); + + // Adjusting the cube: N and vertex sample index + var e0 = e < size_i - 1 ? Math.floor(e) : e - 1; // e1 = e0 + 1; + var n0 = e0 + 1 - e; // (e1 - e) / (e1 - e0); + var n1 = e - e0; // (e - e0) / (e1 - e0); + var offset0 = e0 * k; + var offset1 = offset0 + k; // e1 * k + for (j = 0; j < cubeVertices; j++) { + if (j & pos) { + cubeN[j] *= n1; + cubeVertex[j] += offset1; + } else { + cubeN[j] *= n0; + cubeVertex[j] += offset0; + } + } + + k *= size_i; + pos <<= 1; + } + + for (j = 0; j < n; ++j) { + // Sum all cube vertices' samples portions + var rj = 0; + for (i = 0; i < cubeVertices; i++) { + rj += samples[cubeVertex[i] + j] * cubeN[i]; + } + + // r_j' = Interpolate(r_j, 0, 2^BitsPerSample - 1, + // Decode_2j, Decode_2j+1) + rj = interpolate(rj, 0, 1, decode[j][0], decode[j][1]); + + // y_j = min(max(r_j, range_2j), range_2j+1) + dest[destOffset + j] = Math.min(Math.max(rj, range[j][0]), + range[j][1]); + } + }; + }, + + constructInterpolated: function PDFFunction_constructInterpolated(str, + dict) { + var c0 = dict.get('C0') || [0]; + var c1 = dict.get('C1') || [1]; + var n = dict.get('N'); + + if (!isArray(c0) || !isArray(c1)) { + error('Illegal dictionary for interpolated function'); + } + + var length = c0.length; + var diff = []; + for (var i = 0; i < length; ++i) { + diff.push(c1[i] - c0[i]); + } + + return [CONSTRUCT_INTERPOLATED, c0, diff, n]; + }, + + constructInterpolatedFromIR: + function PDFFunction_constructInterpolatedFromIR(IR) { + var c0 = IR[1]; + var diff = IR[2]; + var n = IR[3]; + + var length = diff.length; + + return function constructInterpolatedFromIRResult(src, srcOffset, + dest, destOffset) { + var x = n === 1 ? src[srcOffset] : Math.pow(src[srcOffset], n); + + for (var j = 0; j < length; ++j) { + dest[destOffset + j] = c0[j] + (x * diff[j]); + } + }; + }, + + constructStiched: function PDFFunction_constructStiched(fn, dict, xref) { + var domain = dict.get('Domain'); + + if (!domain) { + error('No domain'); + } + + var inputSize = domain.length / 2; + if (inputSize !== 1) { + error('Bad domain for stiched function'); + } + + var fnRefs = dict.get('Functions'); + var fns = []; + for (var i = 0, ii = fnRefs.length; i < ii; ++i) { + fns.push(PDFFunction.getIR(xref, xref.fetchIfRef(fnRefs[i]))); + } + + var bounds = dict.get('Bounds'); + var encode = dict.get('Encode'); + + return [CONSTRUCT_STICHED, domain, bounds, encode, fns]; + }, + + constructStichedFromIR: function PDFFunction_constructStichedFromIR(IR) { + var domain = IR[1]; + var bounds = IR[2]; + var encode = IR[3]; + var fnsIR = IR[4]; + var fns = []; + var tmpBuf = new Float32Array(1); + + for (var i = 0, ii = fnsIR.length; i < ii; i++) { + fns.push(PDFFunction.fromIR(fnsIR[i])); + } + + return function constructStichedFromIRResult(src, srcOffset, + dest, destOffset) { + var clip = function constructStichedFromIRClip(v, min, max) { + if (v > max) { + v = max; + } else if (v < min) { + v = min; + } + return v; + }; + + // clip to domain + var v = clip(src[srcOffset], domain[0], domain[1]); + // calulate which bound the value is in + for (var i = 0, ii = bounds.length; i < ii; ++i) { + if (v < bounds[i]) { + break; + } + } + + // encode value into domain of function + var dmin = domain[0]; + if (i > 0) { + dmin = bounds[i - 1]; + } + var dmax = domain[1]; + if (i < bounds.length) { + dmax = bounds[i]; + } + + var rmin = encode[2 * i]; + var rmax = encode[2 * i + 1]; + + tmpBuf[0] = rmin + (v - dmin) * (rmax - rmin) / (dmax - dmin); + + // call the appropriate function + fns[i](tmpBuf, 0, dest, destOffset); + }; + }, + + constructPostScript: function PDFFunction_constructPostScript(fn, dict, + xref) { + var domain = dict.get('Domain'); + var range = dict.get('Range'); + + if (!domain) { + error('No domain.'); + } + + if (!range) { + error('No range.'); + } + + var lexer = new PostScriptLexer(fn); + var parser = new PostScriptParser(lexer); + var code = parser.parse(); + + return [CONSTRUCT_POSTSCRIPT, domain, range, code]; + }, + + constructPostScriptFromIR: function PDFFunction_constructPostScriptFromIR( + IR) { + var domain = IR[1]; + var range = IR[2]; + var code = IR[3]; + + var compiled = (new PostScriptCompiler()).compile(code, domain, range); + if (compiled) { + // Compiled function consists of simple expressions such as addition, + // subtraction, Math.max, and also contains 'var' and 'return' + // statements. See the generation in the PostScriptCompiler below. + /*jshint -W054 */ + return new Function('src', 'srcOffset', 'dest', 'destOffset', compiled); + } + + info('Unable to compile PS function'); + + var numOutputs = range.length >> 1; + var numInputs = domain.length >> 1; + var evaluator = new PostScriptEvaluator(code); + // Cache the values for a big speed up, the cache size is limited though + // since the number of possible values can be huge from a PS function. + var cache = {}; + // The MAX_CACHE_SIZE is set to ~4x the maximum number of distinct values + // seen in our tests. + var MAX_CACHE_SIZE = 2048 * 4; + var cache_available = MAX_CACHE_SIZE; + var tmpBuf = new Float32Array(numInputs); + + return function constructPostScriptFromIRResult(src, srcOffset, + dest, destOffset) { + var i, value; + var key = ''; + var input = tmpBuf; + for (i = 0; i < numInputs; i++) { + value = src[srcOffset + i]; + input[i] = value; + key += value + '_'; + } + + var cachedValue = cache[key]; + if (cachedValue !== undefined) { + dest.set(cachedValue, destOffset); + return; + } + + var output = new Float32Array(numOutputs); + var stack = evaluator.execute(input); + var stackIndex = stack.length - numOutputs; + for (i = 0; i < numOutputs; i++) { + value = stack[stackIndex + i]; + var bound = range[i * 2]; + if (value < bound) { + value = bound; + } else { + bound = range[i * 2 +1]; + if (value > bound) { + value = bound; + } + } + output[i] = value; + } + if (cache_available > 0) { + cache_available--; + cache[key] = output; + } + dest.set(output, destOffset); + }; + } + }; +})(); + +function isPDFFunction(v) { + var fnDict; + if (typeof v !== 'object') { + return false; + } else if (isDict(v)) { + fnDict = v; + } else if (isStream(v)) { + fnDict = v.dict; + } else { + return false; + } + return fnDict.has('FunctionType'); +} + +var PostScriptStack = (function PostScriptStackClosure() { + var MAX_STACK_SIZE = 100; + function PostScriptStack(initialStack) { + this.stack = !initialStack ? [] : + Array.prototype.slice.call(initialStack, 0); + } + + PostScriptStack.prototype = { + push: function PostScriptStack_push(value) { + if (this.stack.length >= MAX_STACK_SIZE) { + error('PostScript function stack overflow.'); + } + this.stack.push(value); + }, + pop: function PostScriptStack_pop() { + if (this.stack.length <= 0) { + error('PostScript function stack underflow.'); + } + return this.stack.pop(); + }, + copy: function PostScriptStack_copy(n) { + if (this.stack.length + n >= MAX_STACK_SIZE) { + error('PostScript function stack overflow.'); + } + var stack = this.stack; + for (var i = stack.length - n, j = n - 1; j >= 0; j--, i++) { + stack.push(stack[i]); + } + }, + index: function PostScriptStack_index(n) { + this.push(this.stack[this.stack.length - n - 1]); + }, + // rotate the last n stack elements p times + roll: function PostScriptStack_roll(n, p) { + var stack = this.stack; + var l = stack.length - n; + var r = stack.length - 1, c = l + (p - Math.floor(p / n) * n), i, j, t; + for (i = l, j = r; i < j; i++, j--) { + t = stack[i]; stack[i] = stack[j]; stack[j] = t; + } + for (i = l, j = c - 1; i < j; i++, j--) { + t = stack[i]; stack[i] = stack[j]; stack[j] = t; + } + for (i = c, j = r; i < j; i++, j--) { + t = stack[i]; stack[i] = stack[j]; stack[j] = t; + } + } + }; + return PostScriptStack; +})(); +var PostScriptEvaluator = (function PostScriptEvaluatorClosure() { + function PostScriptEvaluator(operators) { + this.operators = operators; + } + PostScriptEvaluator.prototype = { + execute: function PostScriptEvaluator_execute(initialStack) { + var stack = new PostScriptStack(initialStack); + var counter = 0; + var operators = this.operators; + var length = operators.length; + var operator, a, b; + while (counter < length) { + operator = operators[counter++]; + if (typeof operator === 'number') { + // Operator is really an operand and should be pushed to the stack. + stack.push(operator); + continue; + } + switch (operator) { + // non standard ps operators + case 'jz': // jump if false + b = stack.pop(); + a = stack.pop(); + if (!a) { + counter = b; + } + break; + case 'j': // jump + a = stack.pop(); + counter = a; + break; + + // all ps operators in alphabetical order (excluding if/ifelse) + case 'abs': + a = stack.pop(); + stack.push(Math.abs(a)); + break; + case 'add': + b = stack.pop(); + a = stack.pop(); + stack.push(a + b); + break; + case 'and': + b = stack.pop(); + a = stack.pop(); + if (isBool(a) && isBool(b)) { + stack.push(a && b); + } else { + stack.push(a & b); + } + break; + case 'atan': + a = stack.pop(); + stack.push(Math.atan(a)); + break; + case 'bitshift': + b = stack.pop(); + a = stack.pop(); + if (a > 0) { + stack.push(a << b); + } else { + stack.push(a >> b); + } + break; + case 'ceiling': + a = stack.pop(); + stack.push(Math.ceil(a)); + break; + case 'copy': + a = stack.pop(); + stack.copy(a); + break; + case 'cos': + a = stack.pop(); + stack.push(Math.cos(a)); + break; + case 'cvi': + a = stack.pop() | 0; + stack.push(a); + break; + case 'cvr': + // noop + break; + case 'div': + b = stack.pop(); + a = stack.pop(); + stack.push(a / b); + break; + case 'dup': + stack.copy(1); + break; + case 'eq': + b = stack.pop(); + a = stack.pop(); + stack.push(a === b); + break; + case 'exch': + stack.roll(2, 1); + break; + case 'exp': + b = stack.pop(); + a = stack.pop(); + stack.push(Math.pow(a, b)); + break; + case 'false': + stack.push(false); + break; + case 'floor': + a = stack.pop(); + stack.push(Math.floor(a)); + break; + case 'ge': + b = stack.pop(); + a = stack.pop(); + stack.push(a >= b); + break; + case 'gt': + b = stack.pop(); + a = stack.pop(); + stack.push(a > b); + break; + case 'idiv': + b = stack.pop(); + a = stack.pop(); + stack.push((a / b) | 0); + break; + case 'index': + a = stack.pop(); + stack.index(a); + break; + case 'le': + b = stack.pop(); + a = stack.pop(); + stack.push(a <= b); + break; + case 'ln': + a = stack.pop(); + stack.push(Math.log(a)); + break; + case 'log': + a = stack.pop(); + stack.push(Math.log(a) / Math.LN10); + break; + case 'lt': + b = stack.pop(); + a = stack.pop(); + stack.push(a < b); + break; + case 'mod': + b = stack.pop(); + a = stack.pop(); + stack.push(a % b); + break; + case 'mul': + b = stack.pop(); + a = stack.pop(); + stack.push(a * b); + break; + case 'ne': + b = stack.pop(); + a = stack.pop(); + stack.push(a !== b); + break; + case 'neg': + a = stack.pop(); + stack.push(-a); + break; + case 'not': + a = stack.pop(); + if (isBool(a)) { + stack.push(!a); + } else { + stack.push(~a); + } + break; + case 'or': + b = stack.pop(); + a = stack.pop(); + if (isBool(a) && isBool(b)) { + stack.push(a || b); + } else { + stack.push(a | b); + } + break; + case 'pop': + stack.pop(); + break; + case 'roll': + b = stack.pop(); + a = stack.pop(); + stack.roll(a, b); + break; + case 'round': + a = stack.pop(); + stack.push(Math.round(a)); + break; + case 'sin': + a = stack.pop(); + stack.push(Math.sin(a)); + break; + case 'sqrt': + a = stack.pop(); + stack.push(Math.sqrt(a)); + break; + case 'sub': + b = stack.pop(); + a = stack.pop(); + stack.push(a - b); + break; + case 'true': + stack.push(true); + break; + case 'truncate': + a = stack.pop(); + a = a < 0 ? Math.ceil(a) : Math.floor(a); + stack.push(a); + break; + case 'xor': + b = stack.pop(); + a = stack.pop(); + if (isBool(a) && isBool(b)) { + stack.push(a !== b); + } else { + stack.push(a ^ b); + } + break; + default: + error('Unknown operator ' + operator); + break; + } + } + return stack.stack; + } + }; + return PostScriptEvaluator; +})(); + +// Most of the PDFs functions consist of simple operations such as: +// roll, exch, sub, cvr, pop, index, dup, mul, if, gt, add. +// +// We can compile most of such programs, and at the same moment, we can +// optimize some expressions using basic math properties. Keeping track of +// min/max values will allow us to avoid extra Math.min/Math.max calls. +var PostScriptCompiler = (function PostScriptCompilerClosure() { + function AstNode(type) { + this.type = type; + } + AstNode.prototype.visit = function (visitor) { + throw new Error('abstract method'); + }; + + function AstArgument(index, min, max) { + AstNode.call(this, 'args'); + this.index = index; + this.min = min; + this.max = max; + } + AstArgument.prototype = Object.create(AstNode.prototype); + AstArgument.prototype.visit = function (visitor) { + visitor.visitArgument(this); + }; + + function AstLiteral(number) { + AstNode.call(this, 'literal'); + this.number = number; + this.min = number; + this.max = number; + } + AstLiteral.prototype = Object.create(AstNode.prototype); + AstLiteral.prototype.visit = function (visitor) { + visitor.visitLiteral(this); + }; + + function AstBinaryOperation(op, arg1, arg2, min, max) { + AstNode.call(this, 'binary'); + this.op = op; + this.arg1 = arg1; + this.arg2 = arg2; + this.min = min; + this.max = max; + } + AstBinaryOperation.prototype = Object.create(AstNode.prototype); + AstBinaryOperation.prototype.visit = function (visitor) { + visitor.visitBinaryOperation(this); + }; + + function AstMin(arg, max) { + AstNode.call(this, 'max'); + this.arg = arg; + this.min = arg.min; + this.max = max; + } + AstMin.prototype = Object.create(AstNode.prototype); + AstMin.prototype.visit = function (visitor) { + visitor.visitMin(this); + }; + + function AstVariable(index, min, max) { + AstNode.call(this, 'var'); + this.index = index; + this.min = min; + this.max = max; + } + AstVariable.prototype = Object.create(AstNode.prototype); + AstVariable.prototype.visit = function (visitor) { + visitor.visitVariable(this); + }; + + function AstVariableDefinition(variable, arg) { + AstNode.call(this, 'definition'); + this.variable = variable; + this.arg = arg; + } + AstVariableDefinition.prototype = Object.create(AstNode.prototype); + AstVariableDefinition.prototype.visit = function (visitor) { + visitor.visitVariableDefinition(this); + }; + + function ExpressionBuilderVisitor() { + this.parts = []; + } + ExpressionBuilderVisitor.prototype = { + visitArgument: function (arg) { + this.parts.push('Math.max(', arg.min, ', Math.min(', + arg.max, ', src[srcOffset + ', arg.index, ']))'); + }, + visitVariable: function (variable) { + this.parts.push('v', variable.index); + }, + visitLiteral: function (literal) { + this.parts.push(literal.number); + }, + visitBinaryOperation: function (operation) { + this.parts.push('('); + operation.arg1.visit(this); + this.parts.push(' ', operation.op, ' '); + operation.arg2.visit(this); + this.parts.push(')'); + }, + visitVariableDefinition: function (definition) { + this.parts.push('var '); + definition.variable.visit(this); + this.parts.push(' = '); + definition.arg.visit(this); + this.parts.push(';'); + }, + visitMin: function (max) { + this.parts.push('Math.min('); + max.arg.visit(this); + this.parts.push(', ', max.max, ')'); + }, + toString: function () { + return this.parts.join(''); + } + }; + + function buildAddOperation(num1, num2) { + if (num2.type === 'literal' && num2.number === 0) { + // optimization: second operand is 0 + return num1; + } + if (num1.type === 'literal' && num1.number === 0) { + // optimization: first operand is 0 + return num2; + } + if (num2.type === 'literal' && num1.type === 'literal') { + // optimization: operands operand are literals + return new AstLiteral(num1.number + num2.number); + } + return new AstBinaryOperation('+', num1, num2, + num1.min + num2.min, num1.max + num2.max); + } + + function buildMulOperation(num1, num2) { + if (num2.type === 'literal') { + // optimization: second operands is a literal... + if (num2.number === 0) { + return new AstLiteral(0); // and it's 0 + } else if (num2.number === 1) { + return num1; // and it's 1 + } else if (num1.type === 'literal') { + // ... and first operands is a literal too + return new AstLiteral(num1.number * num2.number); + } + } + if (num1.type === 'literal') { + // optimization: first operands is a literal... + if (num1.number === 0) { + return new AstLiteral(0); // and it's 0 + } else if (num1.number === 1) { + return num2; // and it's 1 + } + } + var min = Math.min(num1.min * num2.min, num1.min * num2.max, + num1.max * num2.min, num1.max * num2.max); + var max = Math.max(num1.min * num2.min, num1.min * num2.max, + num1.max * num2.min, num1.max * num2.max); + return new AstBinaryOperation('*', num1, num2, min, max); + } + + function buildSubOperation(num1, num2) { + if (num2.type === 'literal') { + // optimization: second operands is a literal... + if (num2.number === 0) { + return num1; // ... and it's 0 + } else if (num1.type === 'literal') { + // ... and first operands is a literal too + return new AstLiteral(num1.number - num2.number); + } + } + if (num2.type === 'binary' && num2.op === '-' && + num1.type === 'literal' && num1.number === 1 && + num2.arg1.type === 'literal' && num2.arg1.number === 1) { + // optimization for case: 1 - (1 - x) + return num2.arg2; + } + return new AstBinaryOperation('-', num1, num2, + num1.min - num2.max, num1.max - num2.min); + } + + function buildMinOperation(num1, max) { + if (num1.min >= max) { + // optimization: num1 min value is not less than required max + return new AstLiteral(max); // just returning max + } else if (num1.max <= max) { + // optimization: num1 max value is not greater than required max + return num1; // just returning an argument + } + return new AstMin(num1, max); + } + + function PostScriptCompiler() {} + PostScriptCompiler.prototype = { + compile: function PostScriptCompiler_compile(code, domain, range) { + var stack = []; + var i, ii; + var instructions = []; + var inputSize = domain.length >> 1, outputSize = range.length >> 1; + var lastRegister = 0; + var n, j, min, max; + var num1, num2, ast1, ast2, tmpVar, item; + for (i = 0; i < inputSize; i++) { + stack.push(new AstArgument(i, domain[i * 2], domain[i * 2 + 1])); + } + + for (i = 0, ii = code.length; i < ii; i++) { + item = code[i]; + if (typeof item === 'number') { + stack.push(new AstLiteral(item)); + continue; + } + + switch (item) { + case 'add': + if (stack.length < 2) { + return null; + } + num2 = stack.pop(); + num1 = stack.pop(); + stack.push(buildAddOperation(num1, num2)); + break; + case 'cvr': + if (stack.length < 1) { + return null; + } + break; + case 'mul': + if (stack.length < 2) { + return null; + } + num2 = stack.pop(); + num1 = stack.pop(); + stack.push(buildMulOperation(num1, num2)); + break; + case 'sub': + if (stack.length < 2) { + return null; + } + num2 = stack.pop(); + num1 = stack.pop(); + stack.push(buildSubOperation(num1, num2)); + break; + case 'exch': + if (stack.length < 2) { + return null; + } + ast1 = stack.pop(); ast2 = stack.pop(); + stack.push(ast1, ast2); + break; + case 'pop': + if (stack.length < 1) { + return null; + } + stack.pop(); + break; + case 'index': + if (stack.length < 1) { + return null; + } + num1 = stack.pop(); + if (num1.type !== 'literal') { + return null; + } + n = num1.number; + if (n < 0 || (n|0) !== n || stack.length < n) { + return null; + } + ast1 = stack[stack.length - n - 1]; + if (ast1.type === 'literal' || ast1.type === 'var') { + stack.push(ast1); + break; + } + tmpVar = new AstVariable(lastRegister++, ast1.min, ast1.max); + stack[stack.length - n - 1] = tmpVar; + stack.push(tmpVar); + instructions.push(new AstVariableDefinition(tmpVar, ast1)); + break; + case 'dup': + if (stack.length < 1) { + return null; + } + if (typeof code[i + 1] === 'number' && code[i + 2] === 'gt' && + code[i + 3] === i + 7 && code[i + 4] === 'jz' && + code[i + 5] === 'pop' && code[i + 6] === code[i + 1]) { + // special case of the commands sequence for the min operation + num1 = stack.pop(); + stack.push(buildMinOperation(num1, code[i + 1])); + i += 6; + break; + } + ast1 = stack[stack.length - 1]; + if (ast1.type === 'literal' || ast1.type === 'var') { + // we don't have to save into intermediate variable a literal or + // variable. + stack.push(ast1); + break; + } + tmpVar = new AstVariable(lastRegister++, ast1.min, ast1.max); + stack[stack.length - 1] = tmpVar; + stack.push(tmpVar); + instructions.push(new AstVariableDefinition(tmpVar, ast1)); + break; + case 'roll': + if (stack.length < 2) { + return null; + } + num2 = stack.pop(); + num1 = stack.pop(); + if (num2.type !== 'literal' || num1.type !== 'literal') { + // both roll operands must be numbers + return null; + } + j = num2.number; + n = num1.number; + if (n <= 0 || (n|0) !== n || (j|0) !== j || stack.length < n) { + // ... and integers + return null; + } + j = ((j % n) + n) % n; + if (j === 0) { + break; // just skipping -- there are nothing to rotate + } + Array.prototype.push.apply(stack, + stack.splice(stack.length - n, n - j)); + break; + default: + return null; // unsupported operator + } + } + + if (stack.length !== outputSize) { + return null; + } + + var result = []; + instructions.forEach(function (instruction) { + var statementBuilder = new ExpressionBuilderVisitor(); + instruction.visit(statementBuilder); + result.push(statementBuilder.toString()); + }); + stack.forEach(function (expr, i) { + var statementBuilder = new ExpressionBuilderVisitor(); + expr.visit(statementBuilder); + var min = range[i * 2], max = range[i * 2 + 1]; + var out = [statementBuilder.toString()]; + if (min > expr.min) { + out.unshift('Math.max(', min, ', '); + out.push(')'); + } + if (max < expr.max) { + out.unshift('Math.min(', max, ', '); + out.push(')'); + } + out.unshift('dest[destOffset + ', i, '] = '); + out.push(';'); + result.push(out.join('')); + }); + return result.join('\n'); + } + }; + + return PostScriptCompiler; +})(); + + +var ColorSpace = (function ColorSpaceClosure() { + // Constructor should define this.numComps, this.defaultColor, this.name + function ColorSpace() { + error('should not call ColorSpace constructor'); + } + + ColorSpace.prototype = { + /** + * Converts the color value to the RGB color. The color components are + * located in the src array starting from the srcOffset. Returns the array + * of the rgb components, each value ranging from [0,255]. + */ + getRgb: function ColorSpace_getRgb(src, srcOffset) { + var rgb = new Uint8Array(3); + this.getRgbItem(src, srcOffset, rgb, 0); + return rgb; + }, + /** + * Converts the color value to the RGB color, similar to the getRgb method. + * The result placed into the dest array starting from the destOffset. + */ + getRgbItem: function ColorSpace_getRgbItem(src, srcOffset, + dest, destOffset) { + error('Should not call ColorSpace.getRgbItem'); + }, + /** + * Converts the specified number of the color values to the RGB colors. + * The colors are located in the src array starting from the srcOffset. + * The result is placed into the dest array starting from the destOffset. + * The src array items shall be in [0,2^bits) range, the dest array items + * will be in [0,255] range. alpha01 indicates how many alpha components + * there are in the dest array; it will be either 0 (RGB array) or 1 (RGBA + * array). + */ + getRgbBuffer: function ColorSpace_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + error('Should not call ColorSpace.getRgbBuffer'); + }, + /** + * Determines the number of bytes required to store the result of the + * conversion done by the getRgbBuffer method. As in getRgbBuffer, + * |alpha01| is either 0 (RGB output) or 1 (RGBA output). + */ + getOutputLength: function ColorSpace_getOutputLength(inputLength, + alpha01) { + error('Should not call ColorSpace.getOutputLength'); + }, + /** + * Returns true if source data will be equal the result/output data. + */ + isPassthrough: function ColorSpace_isPassthrough(bits) { + return false; + }, + /** + * Fills in the RGB colors in the destination buffer. alpha01 indicates + * how many alpha components there are in the dest array; it will be either + * 0 (RGB array) or 1 (RGBA array). + */ + fillRgb: function ColorSpace_fillRgb(dest, originalWidth, + originalHeight, width, height, + actualHeight, bpc, comps, alpha01) { + var count = originalWidth * originalHeight; + var rgbBuf = null; + var numComponentColors = 1 << bpc; + var needsResizing = originalHeight !== height || originalWidth !== width; + var i, ii; + + if (this.isPassthrough(bpc)) { + rgbBuf = comps; + } else if (this.numComps === 1 && count > numComponentColors && + this.name !== 'DeviceGray' && this.name !== 'DeviceRGB') { + // Optimization: create a color map when there is just one component and + // we are converting more colors than the size of the color map. We + // don't build the map if the colorspace is gray or rgb since those + // methods are faster than building a map. This mainly offers big speed + // ups for indexed and alternate colorspaces. + // + // TODO it may be worth while to cache the color map. While running + // testing I never hit a cache so I will leave that out for now (perhaps + // we are reparsing colorspaces too much?). + var allColors = bpc <= 8 ? new Uint8Array(numComponentColors) : + new Uint16Array(numComponentColors); + var key; + for (i = 0; i < numComponentColors; i++) { + allColors[i] = i; + } + var colorMap = new Uint8Array(numComponentColors * 3); + this.getRgbBuffer(allColors, 0, numComponentColors, colorMap, 0, bpc, + /* alpha01 = */ 0); + + var destPos, rgbPos; + if (!needsResizing) { + // Fill in the RGB values directly into |dest|. + destPos = 0; + for (i = 0; i < count; ++i) { + key = comps[i] * 3; + dest[destPos++] = colorMap[key]; + dest[destPos++] = colorMap[key + 1]; + dest[destPos++] = colorMap[key + 2]; + destPos += alpha01; + } + } else { + rgbBuf = new Uint8Array(count * 3); + rgbPos = 0; + for (i = 0; i < count; ++i) { + key = comps[i] * 3; + rgbBuf[rgbPos++] = colorMap[key]; + rgbBuf[rgbPos++] = colorMap[key + 1]; + rgbBuf[rgbPos++] = colorMap[key + 2]; + } + } + } else { + if (!needsResizing) { + // Fill in the RGB values directly into |dest|. + this.getRgbBuffer(comps, 0, width * actualHeight, dest, 0, bpc, + alpha01); + } else { + rgbBuf = new Uint8Array(count * 3); + this.getRgbBuffer(comps, 0, count, rgbBuf, 0, bpc, + /* alpha01 = */ 0); + } + } + + if (rgbBuf) { + if (needsResizing) { + PDFImage.resize(rgbBuf, bpc, 3, originalWidth, originalHeight, width, + height, dest, alpha01); + } else { + rgbPos = 0; + destPos = 0; + for (i = 0, ii = width * actualHeight; i < ii; i++) { + dest[destPos++] = rgbBuf[rgbPos++]; + dest[destPos++] = rgbBuf[rgbPos++]; + dest[destPos++] = rgbBuf[rgbPos++]; + destPos += alpha01; + } + } + } + }, + /** + * True if the colorspace has components in the default range of [0, 1]. + * This should be true for all colorspaces except for lab color spaces + * which are [0,100], [-128, 127], [-128, 127]. + */ + usesZeroToOneRange: true + }; + + ColorSpace.parse = function ColorSpace_parse(cs, xref, res) { + var IR = ColorSpace.parseToIR(cs, xref, res); + if (IR instanceof AlternateCS) { + return IR; + } + return ColorSpace.fromIR(IR); + }; + + ColorSpace.fromIR = function ColorSpace_fromIR(IR) { + var name = isArray(IR) ? IR[0] : IR; + var whitePoint, blackPoint, gamma; + + switch (name) { + case 'DeviceGrayCS': + return this.singletons.gray; + case 'DeviceRgbCS': + return this.singletons.rgb; + case 'DeviceCmykCS': + return this.singletons.cmyk; + case 'CalGrayCS': + whitePoint = IR[1].WhitePoint; + blackPoint = IR[1].BlackPoint; + gamma = IR[1].Gamma; + return new CalGrayCS(whitePoint, blackPoint, gamma); + case 'CalRGBCS': + whitePoint = IR[1].WhitePoint; + blackPoint = IR[1].BlackPoint; + gamma = IR[1].Gamma; + var matrix = IR[1].Matrix; + return new CalRGBCS(whitePoint, blackPoint, gamma, matrix); + case 'PatternCS': + var basePatternCS = IR[1]; + if (basePatternCS) { + basePatternCS = ColorSpace.fromIR(basePatternCS); + } + return new PatternCS(basePatternCS); + case 'IndexedCS': + var baseIndexedCS = IR[1]; + var hiVal = IR[2]; + var lookup = IR[3]; + return new IndexedCS(ColorSpace.fromIR(baseIndexedCS), hiVal, lookup); + case 'AlternateCS': + var numComps = IR[1]; + var alt = IR[2]; + var tintFnIR = IR[3]; + + return new AlternateCS(numComps, ColorSpace.fromIR(alt), + PDFFunction.fromIR(tintFnIR)); + case 'LabCS': + whitePoint = IR[1].WhitePoint; + blackPoint = IR[1].BlackPoint; + var range = IR[1].Range; + return new LabCS(whitePoint, blackPoint, range); + default: + error('Unknown name ' + name); + } + return null; + }; + + ColorSpace.parseToIR = function ColorSpace_parseToIR(cs, xref, res) { + if (isName(cs)) { + var colorSpaces = res.get('ColorSpace'); + if (isDict(colorSpaces)) { + var refcs = colorSpaces.get(cs.name); + if (refcs) { + cs = refcs; + } + } + } + + cs = xref.fetchIfRef(cs); + var mode; + + if (isName(cs)) { + mode = cs.name; + this.mode = mode; + + switch (mode) { + case 'DeviceGray': + case 'G': + return 'DeviceGrayCS'; + case 'DeviceRGB': + case 'RGB': + return 'DeviceRgbCS'; + case 'DeviceCMYK': + case 'CMYK': + return 'DeviceCmykCS'; + case 'Pattern': + return ['PatternCS', null]; + default: + error('unrecognized colorspace ' + mode); + } + } else if (isArray(cs)) { + mode = cs[0].name; + this.mode = mode; + var numComps, params; + + switch (mode) { + case 'DeviceGray': + case 'G': + return 'DeviceGrayCS'; + case 'DeviceRGB': + case 'RGB': + return 'DeviceRgbCS'; + case 'DeviceCMYK': + case 'CMYK': + return 'DeviceCmykCS'; + case 'CalGray': + params = xref.fetchIfRef(cs[1]).getAll(); + return ['CalGrayCS', params]; + case 'CalRGB': + params = xref.fetchIfRef(cs[1]).getAll(); + return ['CalRGBCS', params]; + case 'ICCBased': + var stream = xref.fetchIfRef(cs[1]); + var dict = stream.dict; + numComps = dict.get('N'); + if (numComps === 1) { + return 'DeviceGrayCS'; + } else if (numComps === 3) { + return 'DeviceRgbCS'; + } else if (numComps === 4) { + return 'DeviceCmykCS'; + } + break; + case 'Pattern': + var basePatternCS = cs[1]; + if (basePatternCS) { + basePatternCS = ColorSpace.parseToIR(basePatternCS, xref, res); + } + return ['PatternCS', basePatternCS]; + case 'Indexed': + case 'I': + var baseIndexedCS = ColorSpace.parseToIR(cs[1], xref, res); + var hiVal = cs[2] + 1; + var lookup = xref.fetchIfRef(cs[3]); + if (isStream(lookup)) { + lookup = lookup.getBytes(); + } + return ['IndexedCS', baseIndexedCS, hiVal, lookup]; + case 'Separation': + case 'DeviceN': + var name = cs[1]; + numComps = 1; + if (isName(name)) { + numComps = 1; + } else if (isArray(name)) { + numComps = name.length; + } + var alt = ColorSpace.parseToIR(cs[2], xref, res); + var tintFnIR = PDFFunction.getIR(xref, xref.fetchIfRef(cs[3])); + return ['AlternateCS', numComps, alt, tintFnIR]; + case 'Lab': + params = cs[1].getAll(); + return ['LabCS', params]; + default: + error('unimplemented color space object "' + mode + '"'); + } + } else { + error('unrecognized color space object: "' + cs + '"'); + } + return null; + }; + /** + * Checks if a decode map matches the default decode map for a color space. + * This handles the general decode maps where there are two values per + * component. e.g. [0, 1, 0, 1, 0, 1] for a RGB color. + * This does not handle Lab, Indexed, or Pattern decode maps since they are + * slightly different. + * @param {Array} decode Decode map (usually from an image). + * @param {Number} n Number of components the color space has. + */ + ColorSpace.isDefaultDecode = function ColorSpace_isDefaultDecode(decode, n) { + if (!decode) { + return true; + } + + if (n * 2 !== decode.length) { + warn('The decode map is not the correct length'); + return true; + } + for (var i = 0, ii = decode.length; i < ii; i += 2) { + if (decode[i] !== 0 || decode[i + 1] !== 1) { + return false; + } + } + return true; + }; + + ColorSpace.singletons = { + get gray() { + return shadow(this, 'gray', new DeviceGrayCS()); + }, + get rgb() { + return shadow(this, 'rgb', new DeviceRgbCS()); + }, + get cmyk() { + return shadow(this, 'cmyk', new DeviceCmykCS()); + } + }; + + return ColorSpace; +})(); + +/** + * Alternate color space handles both Separation and DeviceN color spaces. A + * Separation color space is actually just a DeviceN with one color component. + * Both color spaces use a tinting function to convert colors to a base color + * space. + */ +var AlternateCS = (function AlternateCSClosure() { + function AlternateCS(numComps, base, tintFn) { + this.name = 'Alternate'; + this.numComps = numComps; + this.defaultColor = new Float32Array(numComps); + for (var i = 0; i < numComps; ++i) { + this.defaultColor[i] = 1; + } + this.base = base; + this.tintFn = tintFn; + this.tmpBuf = new Float32Array(base.numComps); + } + + AlternateCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function AlternateCS_getRgbItem(src, srcOffset, + dest, destOffset) { + var tmpBuf = this.tmpBuf; + this.tintFn(src, srcOffset, tmpBuf, 0); + this.base.getRgbItem(tmpBuf, 0, dest, destOffset); + }, + getRgbBuffer: function AlternateCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var tintFn = this.tintFn; + var base = this.base; + var scale = 1 / ((1 << bits) - 1); + var baseNumComps = base.numComps; + var usesZeroToOneRange = base.usesZeroToOneRange; + var isPassthrough = (base.isPassthrough(8) || !usesZeroToOneRange) && + alpha01 === 0; + var pos = isPassthrough ? destOffset : 0; + var baseBuf = isPassthrough ? dest : new Uint8Array(baseNumComps * count); + var numComps = this.numComps; + + var scaled = new Float32Array(numComps); + var tinted = new Float32Array(baseNumComps); + var i, j; + if (usesZeroToOneRange) { + for (i = 0; i < count; i++) { + for (j = 0; j < numComps; j++) { + scaled[j] = src[srcOffset++] * scale; + } + tintFn(scaled, 0, tinted, 0); + for (j = 0; j < baseNumComps; j++) { + baseBuf[pos++] = tinted[j] * 255; + } + } + } else { + for (i = 0; i < count; i++) { + for (j = 0; j < numComps; j++) { + scaled[j] = src[srcOffset++] * scale; + } + tintFn(scaled, 0, tinted, 0); + base.getRgbItem(tinted, 0, baseBuf, pos); + pos += baseNumComps; + } + } + if (!isPassthrough) { + base.getRgbBuffer(baseBuf, 0, count, dest, destOffset, 8, alpha01); + } + }, + getOutputLength: function AlternateCS_getOutputLength(inputLength, + alpha01) { + return this.base.getOutputLength(inputLength * + this.base.numComps / this.numComps, + alpha01); + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function AlternateCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + + return AlternateCS; +})(); + +var PatternCS = (function PatternCSClosure() { + function PatternCS(baseCS) { + this.name = 'Pattern'; + this.base = baseCS; + } + PatternCS.prototype = {}; + + return PatternCS; +})(); + +var IndexedCS = (function IndexedCSClosure() { + function IndexedCS(base, highVal, lookup) { + this.name = 'Indexed'; + this.numComps = 1; + this.defaultColor = new Uint8Array([0]); + this.base = base; + this.highVal = highVal; + + var baseNumComps = base.numComps; + var length = baseNumComps * highVal; + var lookupArray; + + if (isStream(lookup)) { + lookupArray = new Uint8Array(length); + var bytes = lookup.getBytes(length); + lookupArray.set(bytes); + } else if (isString(lookup)) { + lookupArray = new Uint8Array(length); + for (var i = 0; i < length; ++i) { + lookupArray[i] = lookup.charCodeAt(i); + } + } else if (lookup instanceof Uint8Array || lookup instanceof Array) { + lookupArray = lookup; + } else { + error('Unrecognized lookup table: ' + lookup); + } + this.lookup = lookupArray; + } + + IndexedCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function IndexedCS_getRgbItem(src, srcOffset, + dest, destOffset) { + var numComps = this.base.numComps; + var start = src[srcOffset] * numComps; + this.base.getRgbItem(this.lookup, start, dest, destOffset); + }, + getRgbBuffer: function IndexedCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var base = this.base; + var numComps = base.numComps; + var outputDelta = base.getOutputLength(numComps, alpha01); + var lookup = this.lookup; + + for (var i = 0; i < count; ++i) { + var lookupPos = src[srcOffset++] * numComps; + base.getRgbBuffer(lookup, lookupPos, 1, dest, destOffset, 8, alpha01); + destOffset += outputDelta; + } + }, + getOutputLength: function IndexedCS_getOutputLength(inputLength, alpha01) { + return this.base.getOutputLength(inputLength * this.base.numComps, + alpha01); + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function IndexedCS_isDefaultDecode(decodeMap) { + // indexed color maps shouldn't be changed + return true; + }, + usesZeroToOneRange: true + }; + return IndexedCS; +})(); + +var DeviceGrayCS = (function DeviceGrayCSClosure() { + function DeviceGrayCS() { + this.name = 'DeviceGray'; + this.numComps = 1; + this.defaultColor = new Float32Array([0]); + } + + DeviceGrayCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function DeviceGrayCS_getRgbItem(src, srcOffset, + dest, destOffset) { + var c = (src[srcOffset] * 255) | 0; + c = c < 0 ? 0 : c > 255 ? 255 : c; + dest[destOffset] = dest[destOffset + 1] = dest[destOffset + 2] = c; + }, + getRgbBuffer: function DeviceGrayCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var scale = 255 / ((1 << bits) - 1); + var j = srcOffset, q = destOffset; + for (var i = 0; i < count; ++i) { + var c = (scale * src[j++]) | 0; + dest[q++] = c; + dest[q++] = c; + dest[q++] = c; + q += alpha01; + } + }, + getOutputLength: function DeviceGrayCS_getOutputLength(inputLength, + alpha01) { + return inputLength * (3 + alpha01); + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function DeviceGrayCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + return DeviceGrayCS; +})(); + +var DeviceRgbCS = (function DeviceRgbCSClosure() { + function DeviceRgbCS() { + this.name = 'DeviceRGB'; + this.numComps = 3; + this.defaultColor = new Float32Array([0, 0, 0]); + } + DeviceRgbCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function DeviceRgbCS_getRgbItem(src, srcOffset, + dest, destOffset) { + var r = (src[srcOffset] * 255) | 0; + var g = (src[srcOffset + 1] * 255) | 0; + var b = (src[srcOffset + 2] * 255) | 0; + dest[destOffset] = r < 0 ? 0 : r > 255 ? 255 : r; + dest[destOffset + 1] = g < 0 ? 0 : g > 255 ? 255 : g; + dest[destOffset + 2] = b < 0 ? 0 : b > 255 ? 255 : b; + }, + getRgbBuffer: function DeviceRgbCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + if (bits === 8 && alpha01 === 0) { + dest.set(src.subarray(srcOffset, srcOffset + count * 3), destOffset); + return; + } + var scale = 255 / ((1 << bits) - 1); + var j = srcOffset, q = destOffset; + for (var i = 0; i < count; ++i) { + dest[q++] = (scale * src[j++]) | 0; + dest[q++] = (scale * src[j++]) | 0; + dest[q++] = (scale * src[j++]) | 0; + q += alpha01; + } + }, + getOutputLength: function DeviceRgbCS_getOutputLength(inputLength, + alpha01) { + return (inputLength * (3 + alpha01) / 3) | 0; + }, + isPassthrough: function DeviceRgbCS_isPassthrough(bits) { + return bits === 8; + }, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function DeviceRgbCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + return DeviceRgbCS; +})(); + +var DeviceCmykCS = (function DeviceCmykCSClosure() { + // The coefficients below was found using numerical analysis: the method of + // steepest descent for the sum((f_i - color_value_i)^2) for r/g/b colors, + // where color_value is the tabular value from the table of sampled RGB colors + // from CMYK US Web Coated (SWOP) colorspace, and f_i is the corresponding + // CMYK color conversion using the estimation below: + // f(A, B,.. N) = Acc+Bcm+Ccy+Dck+c+Fmm+Gmy+Hmk+Im+Jyy+Kyk+Ly+Mkk+Nk+255 + function convertToRgb(src, srcOffset, srcScale, dest, destOffset) { + var c = src[srcOffset + 0] * srcScale; + var m = src[srcOffset + 1] * srcScale; + var y = src[srcOffset + 2] * srcScale; + var k = src[srcOffset + 3] * srcScale; + + var r = + (c * (-4.387332384609988 * c + 54.48615194189176 * m + + 18.82290502165302 * y + 212.25662451639585 * k + + -285.2331026137004) + + m * (1.7149763477362134 * m - 5.6096736904047315 * y + + -17.873870861415444 * k - 5.497006427196366) + + y * (-2.5217340131683033 * y - 21.248923337353073 * k + + 17.5119270841813) + + k * (-21.86122147463605 * k - 189.48180835922747) + 255) | 0; + var g = + (c * (8.841041422036149 * c + 60.118027045597366 * m + + 6.871425592049007 * y + 31.159100130055922 * k + + -79.2970844816548) + + m * (-15.310361306967817 * m + 17.575251261109482 * y + + 131.35250912493976 * k - 190.9453302588951) + + y * (4.444339102852739 * y + 9.8632861493405 * k - 24.86741582555878) + + k * (-20.737325471181034 * k - 187.80453709719578) + 255) | 0; + var b = + (c * (0.8842522430003296 * c + 8.078677503112928 * m + + 30.89978309703729 * y - 0.23883238689178934 * k + + -14.183576799673286) + + m * (10.49593273432072 * m + 63.02378494754052 * y + + 50.606957656360734 * k - 112.23884253719248) + + y * (0.03296041114873217 * y + 115.60384449646641 * k + + -193.58209356861505) + + k * (-22.33816807309886 * k - 180.12613974708367) + 255) | 0; + + dest[destOffset] = r > 255 ? 255 : r < 0 ? 0 : r; + dest[destOffset + 1] = g > 255 ? 255 : g < 0 ? 0 : g; + dest[destOffset + 2] = b > 255 ? 255 : b < 0 ? 0 : b; + } + + function DeviceCmykCS() { + this.name = 'DeviceCMYK'; + this.numComps = 4; + this.defaultColor = new Float32Array([0, 0, 0, 1]); + } + DeviceCmykCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function DeviceCmykCS_getRgbItem(src, srcOffset, + dest, destOffset) { + convertToRgb(src, srcOffset, 1, dest, destOffset); + }, + getRgbBuffer: function DeviceCmykCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var scale = 1 / ((1 << bits) - 1); + for (var i = 0; i < count; i++) { + convertToRgb(src, srcOffset, scale, dest, destOffset); + srcOffset += 4; + destOffset += 3 + alpha01; + } + }, + getOutputLength: function DeviceCmykCS_getOutputLength(inputLength, + alpha01) { + return (inputLength / 4 * (3 + alpha01)) | 0; + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function DeviceCmykCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + + return DeviceCmykCS; +})(); + +// +// CalGrayCS: Based on "PDF Reference, Sixth Ed", p.245 +// +var CalGrayCS = (function CalGrayCSClosure() { + function CalGrayCS(whitePoint, blackPoint, gamma) { + this.name = 'CalGray'; + this.numComps = 1; + this.defaultColor = new Float32Array([0]); + + if (!whitePoint) { + error('WhitePoint missing - required for color space CalGray'); + } + blackPoint = blackPoint || [0, 0, 0]; + gamma = gamma || 1; + + // Translate arguments to spec variables. + this.XW = whitePoint[0]; + this.YW = whitePoint[1]; + this.ZW = whitePoint[2]; + + this.XB = blackPoint[0]; + this.YB = blackPoint[1]; + this.ZB = blackPoint[2]; + + this.G = gamma; + + // Validate variables as per spec. + if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) { + error('Invalid WhitePoint components for ' + this.name + + ', no fallback available'); + } + + if (this.XB < 0 || this.YB < 0 || this.ZB < 0) { + info('Invalid BlackPoint for ' + this.name + ', falling back to default'); + this.XB = this.YB = this.ZB = 0; + } + + if (this.XB !== 0 || this.YB !== 0 || this.ZB !== 0) { + warn(this.name + ', BlackPoint: XB: ' + this.XB + ', YB: ' + this.YB + + ', ZB: ' + this.ZB + ', only default values are supported.'); + } + + if (this.G < 1) { + info('Invalid Gamma: ' + this.G + ' for ' + this.name + + ', falling back to default'); + this.G = 1; + } + } + + function convertToRgb(cs, src, srcOffset, dest, destOffset, scale) { + // A represents a gray component of a calibrated gray space. + // A <---> AG in the spec + var A = src[srcOffset] * scale; + var AG = Math.pow(A, cs.G); + + // Computes L as per spec. ( = cs.YW * AG ) + // Except if other than default BlackPoint values are used. + var L = cs.YW * AG; + // http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html, Ch 4. + // Convert values to rgb range [0, 255]. + var val = Math.max(295.8 * Math.pow(L, 0.333333333333333333) - 40.8, 0) | 0; + dest[destOffset] = val; + dest[destOffset + 1] = val; + dest[destOffset + 2] = val; + } + + CalGrayCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function CalGrayCS_getRgbItem(src, srcOffset, + dest, destOffset) { + convertToRgb(this, src, srcOffset, dest, destOffset, 1); + }, + getRgbBuffer: function CalGrayCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var scale = 1 / ((1 << bits) - 1); + + for (var i = 0; i < count; ++i) { + convertToRgb(this, src, srcOffset, dest, destOffset, scale); + srcOffset += 1; + destOffset += 3 + alpha01; + } + }, + getOutputLength: function CalGrayCS_getOutputLength(inputLength, alpha01) { + return inputLength * (3 + alpha01); + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function CalGrayCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + return CalGrayCS; +})(); + +// +// CalRGBCS: Based on "PDF Reference, Sixth Ed", p.247 +// +var CalRGBCS = (function CalRGBCSClosure() { + + // See http://www.brucelindbloom.com/index.html?Eqn_ChromAdapt.html for these + // matrices. + var BRADFORD_SCALE_MATRIX = new Float32Array([ + 0.8951, 0.2664, -0.1614, + -0.7502, 1.7135, 0.0367, + 0.0389, -0.0685, 1.0296]); + + var BRADFORD_SCALE_INVERSE_MATRIX = new Float32Array([ + 0.9869929, -0.1470543, 0.1599627, + 0.4323053, 0.5183603, 0.0492912, + -0.0085287, 0.0400428, 0.9684867]); + + // See http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html. + var SRGB_D65_XYZ_TO_RGB_MATRIX = new Float32Array([ + 3.2404542, -1.5371385, -0.4985314, + -0.9692660, 1.8760108, 0.0415560, + 0.0556434, -0.2040259, 1.0572252]); + + var FLAT_WHITEPOINT_MATRIX = new Float32Array([1, 1, 1]); + + var tempNormalizeMatrix = new Float32Array(3); + var tempConvertMatrix1 = new Float32Array(3); + var tempConvertMatrix2 = new Float32Array(3); + + var DECODE_L_CONSTANT = Math.pow(((8 + 16) / 116), 3) / 8.0; + + function CalRGBCS(whitePoint, blackPoint, gamma, matrix) { + this.name = 'CalRGB'; + this.numComps = 3; + this.defaultColor = new Float32Array(3); + + if (!whitePoint) { + error('WhitePoint missing - required for color space CalRGB'); + } + blackPoint = blackPoint || new Float32Array(3); + gamma = gamma || new Float32Array([1, 1, 1]); + matrix = matrix || new Float32Array([1, 0, 0, 0, 1, 0, 0, 0, 1]); + + // Translate arguments to spec variables. + var XW = whitePoint[0]; + var YW = whitePoint[1]; + var ZW = whitePoint[2]; + this.whitePoint = whitePoint; + + var XB = blackPoint[0]; + var YB = blackPoint[1]; + var ZB = blackPoint[2]; + this.blackPoint = blackPoint; + + this.GR = gamma[0]; + this.GG = gamma[1]; + this.GB = gamma[2]; + + this.MXA = matrix[0]; + this.MYA = matrix[1]; + this.MZA = matrix[2]; + this.MXB = matrix[3]; + this.MYB = matrix[4]; + this.MZB = matrix[5]; + this.MXC = matrix[6]; + this.MYC = matrix[7]; + this.MZC = matrix[8]; + + // Validate variables as per spec. + if (XW < 0 || ZW < 0 || YW !== 1) { + error('Invalid WhitePoint components for ' + this.name + + ', no fallback available'); + } + + if (XB < 0 || YB < 0 || ZB < 0) { + info('Invalid BlackPoint for ' + this.name + ' [' + XB + ', ' + YB + + ', ' + ZB + '], falling back to default'); + this.blackPoint = new Float32Array(3); + } + + if (this.GR < 0 || this.GG < 0 || this.GB < 0) { + info('Invalid Gamma [' + this.GR + ', ' + this.GG + ', ' + this.GB + + '] for ' + this.name + ', falling back to default'); + this.GR = this.GG = this.GB = 1; + } + + if (this.MXA < 0 || this.MYA < 0 || this.MZA < 0 || + this.MXB < 0 || this.MYB < 0 || this.MZB < 0 || + this.MXC < 0 || this.MYC < 0 || this.MZC < 0) { + info('Invalid Matrix for ' + this.name + ' [' + + this.MXA + ', ' + this.MYA + ', ' + this.MZA + + this.MXB + ', ' + this.MYB + ', ' + this.MZB + + this.MXC + ', ' + this.MYC + ', ' + this.MZC + + '], falling back to default'); + this.MXA = this.MYB = this.MZC = 1; + this.MXB = this.MYA = this.MZA = this.MXC = this.MYC = this.MZB = 0; + } + } + + function matrixProduct(a, b, result) { + result[0] = a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; + result[1] = a[3] * b[0] + a[4] * b[1] + a[5] * b[2]; + result[2] = a[6] * b[0] + a[7] * b[1] + a[8] * b[2]; + } + + function convertToFlat(sourceWhitePoint, LMS, result) { + result[0] = LMS[0] * 1 / sourceWhitePoint[0]; + result[1] = LMS[1] * 1 / sourceWhitePoint[1]; + result[2] = LMS[2] * 1 / sourceWhitePoint[2]; + } + + function convertToD65(sourceWhitePoint, LMS, result) { + var D65X = 0.95047; + var D65Y = 1; + var D65Z = 1.08883; + + result[0] = LMS[0] * D65X / sourceWhitePoint[0]; + result[1] = LMS[1] * D65Y / sourceWhitePoint[1]; + result[2] = LMS[2] * D65Z / sourceWhitePoint[2]; + } + + function sRGBTransferFunction(color) { + // See http://en.wikipedia.org/wiki/SRGB. + if (color <= 0.0031308){ + return adjustToRange(0, 1, 12.92 * color); + } + + return adjustToRange(0, 1, (1 + 0.055) * Math.pow(color, 1 / 2.4) - 0.055); + } + + function adjustToRange(min, max, value) { + return Math.max(min, Math.min(max, value)); + } + + function decodeL(L) { + if (L < 0) { + return -decodeL(-L); + } + + if (L > 8.0) { + return Math.pow(((L + 16) / 116), 3); + } + + return L * DECODE_L_CONSTANT; + } + + function compensateBlackPoint(sourceBlackPoint, XYZ_Flat, result) { + + // In case the blackPoint is already the default blackPoint then there is + // no need to do compensation. + if (sourceBlackPoint[0] === 0 && + sourceBlackPoint[1] === 0 && + sourceBlackPoint[2] === 0) { + result[0] = XYZ_Flat[0]; + result[1] = XYZ_Flat[1]; + result[2] = XYZ_Flat[2]; + return; + } + + // For the blackPoint calculation details, please see + // http://www.adobe.com/content/dam/Adobe/en/devnet/photoshop/sdk/ + // AdobeBPC.pdf. + // The destination blackPoint is the default blackPoint [0, 0, 0]. + var zeroDecodeL = decodeL(0); + + var X_DST = zeroDecodeL; + var X_SRC = decodeL(sourceBlackPoint[0]); + + var Y_DST = zeroDecodeL; + var Y_SRC = decodeL(sourceBlackPoint[1]); + + var Z_DST = zeroDecodeL; + var Z_SRC = decodeL(sourceBlackPoint[2]); + + var X_Scale = (1 - X_DST) / (1 - X_SRC); + var X_Offset = 1 - X_Scale; + + var Y_Scale = (1 - Y_DST) / (1 - Y_SRC); + var Y_Offset = 1 - Y_Scale; + + var Z_Scale = (1 - Z_DST) / (1 - Z_SRC); + var Z_Offset = 1 - Z_Scale; + + result[0] = XYZ_Flat[0] * X_Scale + X_Offset; + result[1] = XYZ_Flat[1] * Y_Scale + Y_Offset; + result[2] = XYZ_Flat[2] * Z_Scale + Z_Offset; + } + + function normalizeWhitePointToFlat(sourceWhitePoint, XYZ_In, result) { + + // In case the whitePoint is already flat then there is no need to do + // normalization. + if (sourceWhitePoint[0] === 1 && sourceWhitePoint[2] === 1) { + result[0] = XYZ_In[0]; + result[1] = XYZ_In[1]; + result[2] = XYZ_In[2]; + return; + } + + var LMS = result; + matrixProduct(BRADFORD_SCALE_MATRIX, XYZ_In, LMS); + + var LMS_Flat = tempNormalizeMatrix; + convertToFlat(sourceWhitePoint, LMS, LMS_Flat); + + matrixProduct(BRADFORD_SCALE_INVERSE_MATRIX, LMS_Flat, result); + } + + function normalizeWhitePointToD65(sourceWhitePoint, XYZ_In, result) { + + var LMS = result; + matrixProduct(BRADFORD_SCALE_MATRIX, XYZ_In, LMS); + + var LMS_D65 = tempNormalizeMatrix; + convertToD65(sourceWhitePoint, LMS, LMS_D65); + + matrixProduct(BRADFORD_SCALE_INVERSE_MATRIX, LMS_D65, result); + } + + function convertToRgb(cs, src, srcOffset, dest, destOffset, scale) { + // A, B and C represent a red, green and blue components of a calibrated + // rgb space. + var A = adjustToRange(0, 1, src[srcOffset] * scale); + var B = adjustToRange(0, 1, src[srcOffset + 1] * scale); + var C = adjustToRange(0, 1, src[srcOffset + 2] * scale); + + // A <---> AGR in the spec + // B <---> BGG in the spec + // C <---> CGB in the spec + var AGR = Math.pow(A, cs.GR); + var BGG = Math.pow(B, cs.GG); + var CGB = Math.pow(C, cs.GB); + + // Computes intermediate variables L, M, N as per spec. + // To decode X, Y, Z values map L, M, N directly to them. + var X = cs.MXA * AGR + cs.MXB * BGG + cs.MXC * CGB; + var Y = cs.MYA * AGR + cs.MYB * BGG + cs.MYC * CGB; + var Z = cs.MZA * AGR + cs.MZB * BGG + cs.MZC * CGB; + + // The following calculations are based on this document: + // http://www.adobe.com/content/dam/Adobe/en/devnet/photoshop/sdk/ + // AdobeBPC.pdf. + var XYZ = tempConvertMatrix1; + XYZ[0] = X; + XYZ[1] = Y; + XYZ[2] = Z; + var XYZ_Flat = tempConvertMatrix2; + + normalizeWhitePointToFlat(cs.whitePoint, XYZ, XYZ_Flat); + + var XYZ_Black = tempConvertMatrix1; + compensateBlackPoint(cs.blackPoint, XYZ_Flat, XYZ_Black); + + var XYZ_D65 = tempConvertMatrix2; + normalizeWhitePointToD65(FLAT_WHITEPOINT_MATRIX, XYZ_Black, XYZ_D65); + + var SRGB = tempConvertMatrix1; + matrixProduct(SRGB_D65_XYZ_TO_RGB_MATRIX, XYZ_D65, SRGB); + + var sR = sRGBTransferFunction(SRGB[0]); + var sG = sRGBTransferFunction(SRGB[1]); + var sB = sRGBTransferFunction(SRGB[2]); + + // Convert the values to rgb range [0, 255]. + dest[destOffset] = Math.round(sR * 255); + dest[destOffset + 1] = Math.round(sG * 255); + dest[destOffset + 2] = Math.round(sB * 255); + } + + CalRGBCS.prototype = { + getRgb: function CalRGBCS_getRgb(src, srcOffset) { + var rgb = new Uint8Array(3); + this.getRgbItem(src, srcOffset, rgb, 0); + return rgb; + }, + getRgbItem: function CalRGBCS_getRgbItem(src, srcOffset, + dest, destOffset) { + convertToRgb(this, src, srcOffset, dest, destOffset, 1); + }, + getRgbBuffer: function CalRGBCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var scale = 1 / ((1 << bits) - 1); + + for (var i = 0; i < count; ++i) { + convertToRgb(this, src, srcOffset, dest, destOffset, scale); + srcOffset += 3; + destOffset += 3 + alpha01; + } + }, + getOutputLength: function CalRGBCS_getOutputLength(inputLength, alpha01) { + return (inputLength * (3 + alpha01) / 3) | 0; + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function CalRGBCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + return CalRGBCS; +})(); + +// +// LabCS: Based on "PDF Reference, Sixth Ed", p.250 +// +var LabCS = (function LabCSClosure() { + function LabCS(whitePoint, blackPoint, range) { + this.name = 'Lab'; + this.numComps = 3; + this.defaultColor = new Float32Array([0, 0, 0]); + + if (!whitePoint) { + error('WhitePoint missing - required for color space Lab'); + } + blackPoint = blackPoint || [0, 0, 0]; + range = range || [-100, 100, -100, 100]; + + // Translate args to spec variables + this.XW = whitePoint[0]; + this.YW = whitePoint[1]; + this.ZW = whitePoint[2]; + this.amin = range[0]; + this.amax = range[1]; + this.bmin = range[2]; + this.bmax = range[3]; + + // These are here just for completeness - the spec doesn't offer any + // formulas that use BlackPoint in Lab + this.XB = blackPoint[0]; + this.YB = blackPoint[1]; + this.ZB = blackPoint[2]; + + // Validate vars as per spec + if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) { + error('Invalid WhitePoint components, no fallback available'); + } + + if (this.XB < 0 || this.YB < 0 || this.ZB < 0) { + info('Invalid BlackPoint, falling back to default'); + this.XB = this.YB = this.ZB = 0; + } + + if (this.amin > this.amax || this.bmin > this.bmax) { + info('Invalid Range, falling back to defaults'); + this.amin = -100; + this.amax = 100; + this.bmin = -100; + this.bmax = 100; + } + } + + // Function g(x) from spec + function fn_g(x) { + if (x >= 6 / 29) { + return x * x * x; + } else { + return (108 / 841) * (x - 4 / 29); + } + } + + function decode(value, high1, low2, high2) { + return low2 + (value) * (high2 - low2) / (high1); + } + + // If decoding is needed maxVal should be 2^bits per component - 1. + function convertToRgb(cs, src, srcOffset, maxVal, dest, destOffset) { + // XXX: Lab input is in the range of [0, 100], [amin, amax], [bmin, bmax] + // not the usual [0, 1]. If a command like setFillColor is used the src + // values will already be within the correct range. However, if we are + // converting an image we have to map the values to the correct range given + // above. + // Ls,as,bs <---> L*,a*,b* in the spec + var Ls = src[srcOffset]; + var as = src[srcOffset + 1]; + var bs = src[srcOffset + 2]; + if (maxVal !== false) { + Ls = decode(Ls, maxVal, 0, 100); + as = decode(as, maxVal, cs.amin, cs.amax); + bs = decode(bs, maxVal, cs.bmin, cs.bmax); + } + + // Adjust limits of 'as' and 'bs' + as = as > cs.amax ? cs.amax : as < cs.amin ? cs.amin : as; + bs = bs > cs.bmax ? cs.bmax : bs < cs.bmin ? cs.bmin : bs; + + // Computes intermediate variables X,Y,Z as per spec + var M = (Ls + 16) / 116; + var L = M + (as / 500); + var N = M - (bs / 200); + + var X = cs.XW * fn_g(L); + var Y = cs.YW * fn_g(M); + var Z = cs.ZW * fn_g(N); + + var r, g, b; + // Using different conversions for D50 and D65 white points, + // per http://www.color.org/srgb.pdf + if (cs.ZW < 1) { + // Assuming D50 (X=0.9642, Y=1.00, Z=0.8249) + r = X * 3.1339 + Y * -1.6170 + Z * -0.4906; + g = X * -0.9785 + Y * 1.9160 + Z * 0.0333; + b = X * 0.0720 + Y * -0.2290 + Z * 1.4057; + } else { + // Assuming D65 (X=0.9505, Y=1.00, Z=1.0888) + r = X * 3.2406 + Y * -1.5372 + Z * -0.4986; + g = X * -0.9689 + Y * 1.8758 + Z * 0.0415; + b = X * 0.0557 + Y * -0.2040 + Z * 1.0570; + } + // clamp color values to [0,1] range then convert to [0,255] range. + dest[destOffset] = r <= 0 ? 0 : r >= 1 ? 255 : Math.sqrt(r) * 255 | 0; + dest[destOffset + 1] = g <= 0 ? 0 : g >= 1 ? 255 : Math.sqrt(g) * 255 | 0; + dest[destOffset + 2] = b <= 0 ? 0 : b >= 1 ? 255 : Math.sqrt(b) * 255 | 0; + } + + LabCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function LabCS_getRgbItem(src, srcOffset, dest, destOffset) { + convertToRgb(this, src, srcOffset, false, dest, destOffset); + }, + getRgbBuffer: function LabCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var maxVal = (1 << bits) - 1; + for (var i = 0; i < count; i++) { + convertToRgb(this, src, srcOffset, maxVal, dest, destOffset); + srcOffset += 3; + destOffset += 3 + alpha01; + } + }, + getOutputLength: function LabCS_getOutputLength(inputLength, alpha01) { + return (inputLength * (3 + alpha01) / 3) | 0; + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function LabCS_isDefaultDecode(decodeMap) { + // XXX: Decoding is handled with the lab conversion because of the strange + // ranges that are used. + return true; + }, + usesZeroToOneRange: false + }; + return LabCS; +})(); + + +var ARCFourCipher = (function ARCFourCipherClosure() { + function ARCFourCipher(key) { + this.a = 0; + this.b = 0; + var s = new Uint8Array(256); + var i, j = 0, tmp, keyLength = key.length; + for (i = 0; i < 256; ++i) { + s[i] = i; + } + for (i = 0; i < 256; ++i) { + tmp = s[i]; + j = (j + tmp + key[i % keyLength]) & 0xFF; + s[i] = s[j]; + s[j] = tmp; + } + this.s = s; + } + + ARCFourCipher.prototype = { + encryptBlock: function ARCFourCipher_encryptBlock(data) { + var i, n = data.length, tmp, tmp2; + var a = this.a, b = this.b, s = this.s; + var output = new Uint8Array(n); + for (i = 0; i < n; ++i) { + a = (a + 1) & 0xFF; + tmp = s[a]; + b = (b + tmp) & 0xFF; + tmp2 = s[b]; + s[a] = tmp2; + s[b] = tmp; + output[i] = data[i] ^ s[(tmp + tmp2) & 0xFF]; + } + this.a = a; + this.b = b; + return output; + } + }; + ARCFourCipher.prototype.decryptBlock = ARCFourCipher.prototype.encryptBlock; + + return ARCFourCipher; +})(); + +var calculateMD5 = (function calculateMD5Closure() { + var r = new Uint8Array([ + 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, + 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, + 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, + 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21]); + + var k = new Int32Array([ + -680876936, -389564586, 606105819, -1044525330, -176418897, 1200080426, + -1473231341, -45705983, 1770035416, -1958414417, -42063, -1990404162, + 1804603682, -40341101, -1502002290, 1236535329, -165796510, -1069501632, + 643717713, -373897302, -701558691, 38016083, -660478335, -405537848, + 568446438, -1019803690, -187363961, 1163531501, -1444681467, -51403784, + 1735328473, -1926607734, -378558, -2022574463, 1839030562, -35309556, + -1530992060, 1272893353, -155497632, -1094730640, 681279174, -358537222, + -722521979, 76029189, -640364487, -421815835, 530742520, -995338651, + -198630844, 1126891415, -1416354905, -57434055, 1700485571, -1894986606, + -1051523, -2054922799, 1873313359, -30611744, -1560198380, 1309151649, + -145523070, -1120210379, 718787259, -343485551]); + + function hash(data, offset, length) { + var h0 = 1732584193, h1 = -271733879, h2 = -1732584194, h3 = 271733878; + // pre-processing + var paddedLength = (length + 72) & ~63; // data + 9 extra bytes + var padded = new Uint8Array(paddedLength); + var i, j, n; + for (i = 0; i < length; ++i) { + padded[i] = data[offset++]; + } + padded[i++] = 0x80; + n = paddedLength - 8; + while (i < n) { + padded[i++] = 0; + } + padded[i++] = (length << 3) & 0xFF; + padded[i++] = (length >> 5) & 0xFF; + padded[i++] = (length >> 13) & 0xFF; + padded[i++] = (length >> 21) & 0xFF; + padded[i++] = (length >>> 29) & 0xFF; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + var w = new Int32Array(16); + for (i = 0; i < paddedLength;) { + for (j = 0; j < 16; ++j, i += 4) { + w[j] = (padded[i] | (padded[i + 1] << 8) | + (padded[i + 2] << 16) | (padded[i + 3] << 24)); + } + var a = h0, b = h1, c = h2, d = h3, f, g; + for (j = 0; j < 64; ++j) { + if (j < 16) { + f = (b & c) | ((~b) & d); + g = j; + } else if (j < 32) { + f = (d & b) | ((~d) & c); + g = (5 * j + 1) & 15; + } else if (j < 48) { + f = b ^ c ^ d; + g = (3 * j + 5) & 15; + } else { + f = c ^ (b | (~d)); + g = (7 * j) & 15; + } + var tmp = d, rotateArg = (a + f + k[j] + w[g]) | 0, rotate = r[j]; + d = c; + c = b; + b = (b + ((rotateArg << rotate) | (rotateArg >>> (32 - rotate)))) | 0; + a = tmp; + } + h0 = (h0 + a) | 0; + h1 = (h1 + b) | 0; + h2 = (h2 + c) | 0; + h3 = (h3 + d) | 0; + } + return new Uint8Array([ + h0 & 0xFF, (h0 >> 8) & 0xFF, (h0 >> 16) & 0xFF, (h0 >>> 24) & 0xFF, + h1 & 0xFF, (h1 >> 8) & 0xFF, (h1 >> 16) & 0xFF, (h1 >>> 24) & 0xFF, + h2 & 0xFF, (h2 >> 8) & 0xFF, (h2 >> 16) & 0xFF, (h2 >>> 24) & 0xFF, + h3 & 0xFF, (h3 >> 8) & 0xFF, (h3 >> 16) & 0xFF, (h3 >>> 24) & 0xFF + ]); + } + + return hash; +})(); +var Word64 = (function Word64Closure() { + function Word64(highInteger, lowInteger) { + this.high = highInteger | 0; + this.low = lowInteger | 0; + } + Word64.prototype = { + and: function Word64_and(word) { + this.high &= word.high; + this.low &= word.low; + }, + xor: function Word64_xor(word) { + this.high ^= word.high; + this.low ^= word.low; + }, + + or: function Word64_or(word) { + this.high |= word.high; + this.low |= word.low; + }, + + shiftRight: function Word64_shiftRight(places) { + if (places >= 32) { + this.low = (this.high >>> (places - 32)) | 0; + this.high = 0; + } else { + this.low = (this.low >>> places) | (this.high << (32 - places)); + this.high = (this.high >>> places) | 0; + } + }, + + shiftLeft: function Word64_shiftLeft(places) { + if (places >= 32) { + this.high = this.low << (places - 32); + this.low = 0; + } else { + this.high = (this.high << places) | (this.low >>> (32 - places)); + this.low = this.low << places; + } + }, + + rotateRight: function Word64_rotateRight(places) { + var low, high; + if (places & 32) { + high = this.low; + low = this.high; + } else { + low = this.low; + high = this.high; + } + places &= 31; + this.low = (low >>> places) | (high << (32 - places)); + this.high = (high >>> places) | (low << (32 - places)); + }, + + not: function Word64_not() { + this.high = ~this.high; + this.low = ~this.low; + }, + + add: function Word64_add(word) { + var lowAdd = (this.low >>> 0) + (word.low >>> 0); + var highAdd = (this.high >>> 0) + (word.high >>> 0); + if (lowAdd > 0xFFFFFFFF) { + highAdd += 1; + } + this.low = lowAdd | 0; + this.high = highAdd | 0; + }, + + copyTo: function Word64_copyTo(bytes, offset) { + bytes[offset] = (this.high >>> 24) & 0xFF; + bytes[offset + 1] = (this.high >> 16) & 0xFF; + bytes[offset + 2] = (this.high >> 8) & 0xFF; + bytes[offset + 3] = this.high & 0xFF; + bytes[offset + 4] = (this.low >>> 24) & 0xFF; + bytes[offset + 5] = (this.low >> 16) & 0xFF; + bytes[offset + 6] = (this.low >> 8) & 0xFF; + bytes[offset + 7] = this.low & 0xFF; + }, + + assign: function Word64_assign(word) { + this.high = word.high; + this.low = word.low; + } + }; + return Word64; +})(); + +var calculateSHA256 = (function calculateSHA256Closure() { + function rotr(x, n) { + return (x >>> n) | (x << 32 - n); + } + + function ch(x, y, z) { + return (x & y) ^ (~x & z); + } + + function maj(x, y, z) { + return (x & y) ^ (x & z) ^ (y & z); + } + + function sigma(x) { + return rotr(x, 2) ^ rotr(x, 13) ^ rotr(x, 22); + } + + function sigmaPrime(x) { + return rotr(x, 6) ^ rotr(x, 11) ^ rotr(x, 25); + } + + function littleSigma(x) { + return rotr(x, 7) ^ rotr(x, 18) ^ x >>> 3; + } + + function littleSigmaPrime(x) { + return rotr(x, 17) ^ rotr(x, 19) ^ x >>> 10; + } + + var k = [0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, + 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, + 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, + 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, + 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, + 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, + 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, + 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, + 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, + 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, + 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, + 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, + 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, + 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, + 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, + 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2]; + + function hash(data, offset, length) { + // initial hash values + var h0 = 0x6a09e667, h1 = 0xbb67ae85, h2 = 0x3c6ef372, + h3 = 0xa54ff53a, h4 = 0x510e527f, h5 = 0x9b05688c, + h6 = 0x1f83d9ab, h7 = 0x5be0cd19; + // pre-processing + var paddedLength = Math.ceil((length + 9) / 64) * 64; + var padded = new Uint8Array(paddedLength); + var i, j, n; + for (i = 0; i < length; ++i) { + padded[i] = data[offset++]; + } + padded[i++] = 0x80; + n = paddedLength - 8; + while (i < n) { + padded[i++] = 0; + } + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = (length >>> 29) & 0xFF; + padded[i++] = (length >> 21) & 0xFF; + padded[i++] = (length >> 13) & 0xFF; + padded[i++] = (length >> 5) & 0xFF; + padded[i++] = (length << 3) & 0xFF; + var w = new Uint32Array(64); + // for each 512 bit block + for (i = 0; i < paddedLength;) { + for (j = 0; j < 16; ++j) { + w[j] = (padded[i] << 24 | (padded[i + 1] << 16) | + (padded[i + 2] << 8) | (padded[i + 3])); + i += 4; + } + + for (j = 16; j < 64; ++j) { + w[j] = littleSigmaPrime(w[j - 2]) + w[j - 7] + + littleSigma(w[j - 15]) + w[j - 16] | 0; + } + var a = h0, b = h1, c = h2, d = h3, e = h4, + f = h5, g = h6, h = h7, t1, t2; + for (j = 0; j < 64; ++j) { + t1 = h + sigmaPrime(e) + ch(e, f, g) + k[j] + w[j]; + t2 = sigma(a) + maj(a, b, c); + h = g; + g = f; + f = e; + e = (d + t1) | 0; + d = c; + c = b; + b = a; + a = (t1 + t2) | 0; + } + h0 = (h0 + a) | 0; + h1 = (h1 + b) | 0; + h2 = (h2 + c) | 0; + h3 = (h3 + d) | 0; + h4 = (h4 + e) | 0; + h5 = (h5 + f) | 0; + h6 = (h6 + g) | 0; + h7 = (h7 + h) | 0; + } + return new Uint8Array([ + (h0 >> 24) & 0xFF, (h0 >> 16) & 0xFF, (h0 >> 8) & 0xFF, (h0) & 0xFF, + (h1 >> 24) & 0xFF, (h1 >> 16) & 0xFF, (h1 >> 8) & 0xFF, (h1) & 0xFF, + (h2 >> 24) & 0xFF, (h2 >> 16) & 0xFF, (h2 >> 8) & 0xFF, (h2) & 0xFF, + (h3 >> 24) & 0xFF, (h3 >> 16) & 0xFF, (h3 >> 8) & 0xFF, (h3) & 0xFF, + (h4 >> 24) & 0xFF, (h4 >> 16) & 0xFF, (h4 >> 8) & 0xFF, (h4) & 0xFF, + (h5 >> 24) & 0xFF, (h5 >> 16) & 0xFF, (h5 >> 8) & 0xFF, (h5) & 0xFF, + (h6 >> 24) & 0xFF, (h6 >> 16) & 0xFF, (h6 >> 8) & 0xFF, (h6) & 0xFF, + (h7 >> 24) & 0xFF, (h7 >> 16) & 0xFF, (h7 >> 8) & 0xFF, (h7) & 0xFF + ]); + } + + return hash; +})(); + +var calculateSHA512 = (function calculateSHA512Closure() { + function ch(result, x, y, z, tmp) { + result.assign(x); + result.and(y); + tmp.assign(x); + tmp.not(); + tmp.and(z); + result.xor(tmp); + } + + function maj(result, x, y, z, tmp) { + result.assign(x); + result.and(y); + tmp.assign(x); + tmp.and(z); + result.xor(tmp); + tmp.assign(y); + tmp.and(z); + result.xor(tmp); + } + + function sigma(result, x, tmp) { + result.assign(x); + result.rotateRight(28); + tmp.assign(x); + tmp.rotateRight(34); + result.xor(tmp); + tmp.assign(x); + tmp.rotateRight(39); + result.xor(tmp); + } + + function sigmaPrime(result, x, tmp) { + result.assign(x); + result.rotateRight(14); + tmp.assign(x); + tmp.rotateRight(18); + result.xor(tmp); + tmp.assign(x); + tmp.rotateRight(41); + result.xor(tmp); + } + + function littleSigma(result, x, tmp) { + result.assign(x); + result.rotateRight(1); + tmp.assign(x); + tmp.rotateRight(8); + result.xor(tmp); + tmp.assign(x); + tmp.shiftRight(7); + result.xor(tmp); + } + + function littleSigmaPrime(result, x, tmp) { + result.assign(x); + result.rotateRight(19); + tmp.assign(x); + tmp.rotateRight(61); + result.xor(tmp); + tmp.assign(x); + tmp.shiftRight(6); + result.xor(tmp); + } + + var k = [ + new Word64(0x428a2f98, 0xd728ae22), new Word64(0x71374491, 0x23ef65cd), + new Word64(0xb5c0fbcf, 0xec4d3b2f), new Word64(0xe9b5dba5, 0x8189dbbc), + new Word64(0x3956c25b, 0xf348b538), new Word64(0x59f111f1, 0xb605d019), + new Word64(0x923f82a4, 0xaf194f9b), new Word64(0xab1c5ed5, 0xda6d8118), + new Word64(0xd807aa98, 0xa3030242), new Word64(0x12835b01, 0x45706fbe), + new Word64(0x243185be, 0x4ee4b28c), new Word64(0x550c7dc3, 0xd5ffb4e2), + new Word64(0x72be5d74, 0xf27b896f), new Word64(0x80deb1fe, 0x3b1696b1), + new Word64(0x9bdc06a7, 0x25c71235), new Word64(0xc19bf174, 0xcf692694), + new Word64(0xe49b69c1, 0x9ef14ad2), new Word64(0xefbe4786, 0x384f25e3), + new Word64(0x0fc19dc6, 0x8b8cd5b5), new Word64(0x240ca1cc, 0x77ac9c65), + new Word64(0x2de92c6f, 0x592b0275), new Word64(0x4a7484aa, 0x6ea6e483), + new Word64(0x5cb0a9dc, 0xbd41fbd4), new Word64(0x76f988da, 0x831153b5), + new Word64(0x983e5152, 0xee66dfab), new Word64(0xa831c66d, 0x2db43210), + new Word64(0xb00327c8, 0x98fb213f), new Word64(0xbf597fc7, 0xbeef0ee4), + new Word64(0xc6e00bf3, 0x3da88fc2), new Word64(0xd5a79147, 0x930aa725), + new Word64(0x06ca6351, 0xe003826f), new Word64(0x14292967, 0x0a0e6e70), + new Word64(0x27b70a85, 0x46d22ffc), new Word64(0x2e1b2138, 0x5c26c926), + new Word64(0x4d2c6dfc, 0x5ac42aed), new Word64(0x53380d13, 0x9d95b3df), + new Word64(0x650a7354, 0x8baf63de), new Word64(0x766a0abb, 0x3c77b2a8), + new Word64(0x81c2c92e, 0x47edaee6), new Word64(0x92722c85, 0x1482353b), + new Word64(0xa2bfe8a1, 0x4cf10364), new Word64(0xa81a664b, 0xbc423001), + new Word64(0xc24b8b70, 0xd0f89791), new Word64(0xc76c51a3, 0x0654be30), + new Word64(0xd192e819, 0xd6ef5218), new Word64(0xd6990624, 0x5565a910), + new Word64(0xf40e3585, 0x5771202a), new Word64(0x106aa070, 0x32bbd1b8), + new Word64(0x19a4c116, 0xb8d2d0c8), new Word64(0x1e376c08, 0x5141ab53), + new Word64(0x2748774c, 0xdf8eeb99), new Word64(0x34b0bcb5, 0xe19b48a8), + new Word64(0x391c0cb3, 0xc5c95a63), new Word64(0x4ed8aa4a, 0xe3418acb), + new Word64(0x5b9cca4f, 0x7763e373), new Word64(0x682e6ff3, 0xd6b2b8a3), + new Word64(0x748f82ee, 0x5defb2fc), new Word64(0x78a5636f, 0x43172f60), + new Word64(0x84c87814, 0xa1f0ab72), new Word64(0x8cc70208, 0x1a6439ec), + new Word64(0x90befffa, 0x23631e28), new Word64(0xa4506ceb, 0xde82bde9), + new Word64(0xbef9a3f7, 0xb2c67915), new Word64(0xc67178f2, 0xe372532b), + new Word64(0xca273ece, 0xea26619c), new Word64(0xd186b8c7, 0x21c0c207), + new Word64(0xeada7dd6, 0xcde0eb1e), new Word64(0xf57d4f7f, 0xee6ed178), + new Word64(0x06f067aa, 0x72176fba), new Word64(0x0a637dc5, 0xa2c898a6), + new Word64(0x113f9804, 0xbef90dae), new Word64(0x1b710b35, 0x131c471b), + new Word64(0x28db77f5, 0x23047d84), new Word64(0x32caab7b, 0x40c72493), + new Word64(0x3c9ebe0a, 0x15c9bebc), new Word64(0x431d67c4, 0x9c100d4c), + new Word64(0x4cc5d4be, 0xcb3e42b6), new Word64(0x597f299c, 0xfc657e2a), + new Word64(0x5fcb6fab, 0x3ad6faec), new Word64(0x6c44198c, 0x4a475817)]; + + function hash(data, offset, length, mode384) { + mode384 = !!mode384; + // initial hash values + var h0, h1, h2, h3, h4, h5, h6, h7; + if (!mode384) { + h0 = new Word64(0x6a09e667, 0xf3bcc908); + h1 = new Word64(0xbb67ae85, 0x84caa73b); + h2 = new Word64(0x3c6ef372, 0xfe94f82b); + h3 = new Word64(0xa54ff53a, 0x5f1d36f1); + h4 = new Word64(0x510e527f, 0xade682d1); + h5 = new Word64(0x9b05688c, 0x2b3e6c1f); + h6 = new Word64(0x1f83d9ab, 0xfb41bd6b); + h7 = new Word64(0x5be0cd19, 0x137e2179); + } + else { + // SHA384 is exactly the same + // except with different starting values and a trimmed result + h0 = new Word64(0xcbbb9d5d, 0xc1059ed8); + h1 = new Word64(0x629a292a, 0x367cd507); + h2 = new Word64(0x9159015a, 0x3070dd17); + h3 = new Word64(0x152fecd8, 0xf70e5939); + h4 = new Word64(0x67332667, 0xffc00b31); + h5 = new Word64(0x8eb44a87, 0x68581511); + h6 = new Word64(0xdb0c2e0d, 0x64f98fa7); + h7 = new Word64(0x47b5481d, 0xbefa4fa4); + } + + // pre-processing + var paddedLength = Math.ceil((length + 17) / 128) * 128; + var padded = new Uint8Array(paddedLength); + var i, j, n; + for (i = 0; i < length; ++i) { + padded[i] = data[offset++]; + } + padded[i++] = 0x80; + n = paddedLength - 16; + while (i < n) { + padded[i++] = 0; + } + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = (length >>> 29) & 0xFF; + padded[i++] = (length >> 21) & 0xFF; + padded[i++] = (length >> 13) & 0xFF; + padded[i++] = (length >> 5) & 0xFF; + padded[i++] = (length << 3) & 0xFF; + + var w = new Array(80); + for (i = 0; i < 80; i++) { + w[i] = new Word64(0, 0); + } + var a = new Word64(0, 0), b = new Word64(0, 0), c = new Word64(0, 0); + var d = new Word64(0, 0), e = new Word64(0, 0), f = new Word64(0, 0); + var g = new Word64(0, 0), h = new Word64(0, 0); + var t1 = new Word64(0, 0), t2 = new Word64(0, 0); + var tmp1 = new Word64(0, 0), tmp2 = new Word64(0, 0), tmp3; + + // for each 1024 bit block + for (i = 0; i < paddedLength;) { + for (j = 0; j < 16; ++j) { + w[j].high = (padded[i] << 24) | (padded[i + 1] << 16) | + (padded[i + 2] << 8) | (padded[i + 3]); + w[j].low = (padded[i + 4]) << 24 | (padded[i + 5]) << 16 | + (padded[i + 6]) << 8 | (padded[i + 7]); + i += 8; + } + for (j = 16; j < 80; ++j) { + tmp3 = w[j]; + littleSigmaPrime(tmp3, w[j - 2], tmp2); + tmp3.add(w[j - 7]); + littleSigma(tmp1, w[j - 15], tmp2); + tmp3.add(tmp1); + tmp3.add(w[j - 16]); + } + + a.assign(h0); b.assign(h1); c.assign(h2); d.assign(h3); + e.assign(h4); f.assign(h5); g.assign(h6); h.assign(h7); + for (j = 0; j < 80; ++j) { + t1.assign(h); + sigmaPrime(tmp1, e, tmp2); + t1.add(tmp1); + ch(tmp1, e, f, g, tmp2); + t1.add(tmp1); + t1.add(k[j]); + t1.add(w[j]); + + sigma(t2, a, tmp2); + maj(tmp1, a, b, c, tmp2); + t2.add(tmp1); + + tmp3 = h; + h = g; + g = f; + f = e; + d.add(t1); + e = d; + d = c; + c = b; + b = a; + tmp3.assign(t1); + tmp3.add(t2); + a = tmp3; + } + h0.add(a); + h1.add(b); + h2.add(c); + h3.add(d); + h4.add(e); + h5.add(f); + h6.add(g); + h7.add(h); + } + + var result; + if (!mode384) { + result = new Uint8Array(64); + h0.copyTo(result,0); + h1.copyTo(result,8); + h2.copyTo(result,16); + h3.copyTo(result,24); + h4.copyTo(result,32); + h5.copyTo(result,40); + h6.copyTo(result,48); + h7.copyTo(result,56); + } + else { + result = new Uint8Array(48); + h0.copyTo(result,0); + h1.copyTo(result,8); + h2.copyTo(result,16); + h3.copyTo(result,24); + h4.copyTo(result,32); + h5.copyTo(result,40); + } + return result; + } + + return hash; +})(); +var calculateSHA384 = (function calculateSHA384Closure() { + function hash(data, offset, length) { + return calculateSHA512(data, offset, length, true); + } + + return hash; +})(); +var NullCipher = (function NullCipherClosure() { + function NullCipher() { + } + + NullCipher.prototype = { + decryptBlock: function NullCipher_decryptBlock(data) { + return data; + } + }; + + return NullCipher; +})(); + +var AES128Cipher = (function AES128CipherClosure() { + var rcon = new Uint8Array([ + 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, + 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, + 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, + 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, + 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, + 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, + 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, + 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, + 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, + 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, + 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, + 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, + 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, + 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, + 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, + 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, + 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, + 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, + 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, + 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, + 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, + 0x74, 0xe8, 0xcb, 0x8d]); + + var s = new Uint8Array([ + 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, + 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, + 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, + 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, + 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, + 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, + 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, + 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, + 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, + 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, + 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, + 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, + 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, + 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, + 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, + 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, + 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, + 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, + 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, + 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, + 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, + 0xb0, 0x54, 0xbb, 0x16]); + + var inv_s = new Uint8Array([ + 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, + 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, + 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, + 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, + 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, + 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, + 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, + 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, + 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, + 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, + 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, + 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, + 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, + 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, + 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, + 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, + 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, + 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, + 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, + 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, + 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, + 0x55, 0x21, 0x0c, 0x7d]); + var mixCol = new Uint8Array(256); + for (var i = 0; i < 256; i++) { + if (i < 128) { + mixCol[i] = i << 1; + } else { + mixCol[i] = (i << 1) ^ 0x1b; + } + } + var mix = new Uint32Array([ + 0x00000000, 0x0e090d0b, 0x1c121a16, 0x121b171d, 0x3824342c, 0x362d3927, + 0x24362e3a, 0x2a3f2331, 0x70486858, 0x7e416553, 0x6c5a724e, 0x62537f45, + 0x486c5c74, 0x4665517f, 0x547e4662, 0x5a774b69, 0xe090d0b0, 0xee99ddbb, + 0xfc82caa6, 0xf28bc7ad, 0xd8b4e49c, 0xd6bde997, 0xc4a6fe8a, 0xcaaff381, + 0x90d8b8e8, 0x9ed1b5e3, 0x8ccaa2fe, 0x82c3aff5, 0xa8fc8cc4, 0xa6f581cf, + 0xb4ee96d2, 0xbae79bd9, 0xdb3bbb7b, 0xd532b670, 0xc729a16d, 0xc920ac66, + 0xe31f8f57, 0xed16825c, 0xff0d9541, 0xf104984a, 0xab73d323, 0xa57ade28, + 0xb761c935, 0xb968c43e, 0x9357e70f, 0x9d5eea04, 0x8f45fd19, 0x814cf012, + 0x3bab6bcb, 0x35a266c0, 0x27b971dd, 0x29b07cd6, 0x038f5fe7, 0x0d8652ec, + 0x1f9d45f1, 0x119448fa, 0x4be30393, 0x45ea0e98, 0x57f11985, 0x59f8148e, + 0x73c737bf, 0x7dce3ab4, 0x6fd52da9, 0x61dc20a2, 0xad766df6, 0xa37f60fd, + 0xb16477e0, 0xbf6d7aeb, 0x955259da, 0x9b5b54d1, 0x894043cc, 0x87494ec7, + 0xdd3e05ae, 0xd33708a5, 0xc12c1fb8, 0xcf2512b3, 0xe51a3182, 0xeb133c89, + 0xf9082b94, 0xf701269f, 0x4de6bd46, 0x43efb04d, 0x51f4a750, 0x5ffdaa5b, + 0x75c2896a, 0x7bcb8461, 0x69d0937c, 0x67d99e77, 0x3daed51e, 0x33a7d815, + 0x21bccf08, 0x2fb5c203, 0x058ae132, 0x0b83ec39, 0x1998fb24, 0x1791f62f, + 0x764dd68d, 0x7844db86, 0x6a5fcc9b, 0x6456c190, 0x4e69e2a1, 0x4060efaa, + 0x527bf8b7, 0x5c72f5bc, 0x0605bed5, 0x080cb3de, 0x1a17a4c3, 0x141ea9c8, + 0x3e218af9, 0x302887f2, 0x223390ef, 0x2c3a9de4, 0x96dd063d, 0x98d40b36, + 0x8acf1c2b, 0x84c61120, 0xaef93211, 0xa0f03f1a, 0xb2eb2807, 0xbce2250c, + 0xe6956e65, 0xe89c636e, 0xfa877473, 0xf48e7978, 0xdeb15a49, 0xd0b85742, + 0xc2a3405f, 0xccaa4d54, 0x41ecdaf7, 0x4fe5d7fc, 0x5dfec0e1, 0x53f7cdea, + 0x79c8eedb, 0x77c1e3d0, 0x65daf4cd, 0x6bd3f9c6, 0x31a4b2af, 0x3fadbfa4, + 0x2db6a8b9, 0x23bfa5b2, 0x09808683, 0x07898b88, 0x15929c95, 0x1b9b919e, + 0xa17c0a47, 0xaf75074c, 0xbd6e1051, 0xb3671d5a, 0x99583e6b, 0x97513360, + 0x854a247d, 0x8b432976, 0xd134621f, 0xdf3d6f14, 0xcd267809, 0xc32f7502, + 0xe9105633, 0xe7195b38, 0xf5024c25, 0xfb0b412e, 0x9ad7618c, 0x94de6c87, + 0x86c57b9a, 0x88cc7691, 0xa2f355a0, 0xacfa58ab, 0xbee14fb6, 0xb0e842bd, + 0xea9f09d4, 0xe49604df, 0xf68d13c2, 0xf8841ec9, 0xd2bb3df8, 0xdcb230f3, + 0xcea927ee, 0xc0a02ae5, 0x7a47b13c, 0x744ebc37, 0x6655ab2a, 0x685ca621, + 0x42638510, 0x4c6a881b, 0x5e719f06, 0x5078920d, 0x0a0fd964, 0x0406d46f, + 0x161dc372, 0x1814ce79, 0x322bed48, 0x3c22e043, 0x2e39f75e, 0x2030fa55, + 0xec9ab701, 0xe293ba0a, 0xf088ad17, 0xfe81a01c, 0xd4be832d, 0xdab78e26, + 0xc8ac993b, 0xc6a59430, 0x9cd2df59, 0x92dbd252, 0x80c0c54f, 0x8ec9c844, + 0xa4f6eb75, 0xaaffe67e, 0xb8e4f163, 0xb6edfc68, 0x0c0a67b1, 0x02036aba, + 0x10187da7, 0x1e1170ac, 0x342e539d, 0x3a275e96, 0x283c498b, 0x26354480, + 0x7c420fe9, 0x724b02e2, 0x605015ff, 0x6e5918f4, 0x44663bc5, 0x4a6f36ce, + 0x587421d3, 0x567d2cd8, 0x37a10c7a, 0x39a80171, 0x2bb3166c, 0x25ba1b67, + 0x0f853856, 0x018c355d, 0x13972240, 0x1d9e2f4b, 0x47e96422, 0x49e06929, + 0x5bfb7e34, 0x55f2733f, 0x7fcd500e, 0x71c45d05, 0x63df4a18, 0x6dd64713, + 0xd731dcca, 0xd938d1c1, 0xcb23c6dc, 0xc52acbd7, 0xef15e8e6, 0xe11ce5ed, + 0xf307f2f0, 0xfd0efffb, 0xa779b492, 0xa970b999, 0xbb6bae84, 0xb562a38f, + 0x9f5d80be, 0x91548db5, 0x834f9aa8, 0x8d4697a3]); + + function expandKey128(cipherKey) { + var b = 176, result = new Uint8Array(b); + result.set(cipherKey); + for (var j = 16, i = 1; j < b; ++i) { + // RotWord + var t1 = result[j - 3], t2 = result[j - 2], + t3 = result[j - 1], t4 = result[j - 4]; + // SubWord + t1 = s[t1]; + t2 = s[t2]; + t3 = s[t3]; + t4 = s[t4]; + // Rcon + t1 = t1 ^ rcon[i]; + for (var n = 0; n < 4; ++n) { + result[j] = (t1 ^= result[j - 16]); + j++; + result[j] = (t2 ^= result[j - 16]); + j++; + result[j] = (t3 ^= result[j - 16]); + j++; + result[j] = (t4 ^= result[j - 16]); + j++; + } + } + return result; + } + + function decrypt128(input, key) { + var state = new Uint8Array(16); + state.set(input); + var i, j, k; + var t, u, v; + // AddRoundKey + for (j = 0, k = 160; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + for (i = 9; i >= 1; --i) { + // InvShiftRows + t = state[13]; + state[13] = state[9]; + state[9] = state[5]; + state[5] = state[1]; + state[1] = t; + t = state[14]; + u = state[10]; + state[14] = state[6]; + state[10] = state[2]; + state[6] = t; + state[2] = u; + t = state[15]; + u = state[11]; + v = state[7]; + state[15] = state[3]; + state[11] = t; + state[7] = u; + state[3] = v; + // InvSubBytes + for (j = 0; j < 16; ++j) { + state[j] = inv_s[state[j]]; + } + // AddRoundKey + for (j = 0, k = i * 16; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + // InvMixColumns + for (j = 0; j < 16; j += 4) { + var s0 = mix[state[j]], s1 = mix[state[j + 1]], + s2 = mix[state[j + 2]], s3 = mix[state[j + 3]]; + t = (s0 ^ (s1 >>> 8) ^ (s1 << 24) ^ (s2 >>> 16) ^ (s2 << 16) ^ + (s3 >>> 24) ^ (s3 << 8)); + state[j] = (t >>> 24) & 0xFF; + state[j + 1] = (t >> 16) & 0xFF; + state[j + 2] = (t >> 8) & 0xFF; + state[j + 3] = t & 0xFF; + } + } + // InvShiftRows + t = state[13]; + state[13] = state[9]; + state[9] = state[5]; + state[5] = state[1]; + state[1] = t; + t = state[14]; + u = state[10]; + state[14] = state[6]; + state[10] = state[2]; + state[6] = t; + state[2] = u; + t = state[15]; + u = state[11]; + v = state[7]; + state[15] = state[3]; + state[11] = t; + state[7] = u; + state[3] = v; + for (j = 0; j < 16; ++j) { + // InvSubBytes + state[j] = inv_s[state[j]]; + // AddRoundKey + state[j] ^= key[j]; + } + return state; + } + + function encrypt128(input, key) { + var t, u, v, k; + var state = new Uint8Array(16); + state.set(input); + for (j = 0; j < 16; ++j) { + // AddRoundKey + state[j] ^= key[j]; + } + + for (i = 1; i < 10; i++) { + //SubBytes + for (j = 0; j < 16; ++j) { + state[j] = s[state[j]]; + } + //ShiftRows + v = state[1]; + state[1] = state[5]; + state[5] = state[9]; + state[9] = state[13]; + state[13] = v; + v = state[2]; + u = state[6]; + state[2] = state[10]; + state[6] = state[14]; + state[10] = v; + state[14] = u; + v = state[3]; + u = state[7]; + t = state[11]; + state[3] = state[15]; + state[7] = v; + state[11] = u; + state[15] = t; + //MixColumns + for (var j = 0; j < 16; j += 4) { + var s0 = state[j + 0], s1 = state[j + 1]; + var s2 = state[j + 2], s3 = state[j + 3]; + t = s0 ^ s1 ^ s2 ^ s3; + state[j + 0] ^= t ^ mixCol[s0 ^ s1]; + state[j + 1] ^= t ^ mixCol[s1 ^ s2]; + state[j + 2] ^= t ^ mixCol[s2 ^ s3]; + state[j + 3] ^= t ^ mixCol[s3 ^ s0]; + } + //AddRoundKey + for (j = 0, k = i * 16; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + } + + //SubBytes + for (j = 0; j < 16; ++j) { + state[j] = s[state[j]]; + } + //ShiftRows + v = state[1]; + state[1] = state[5]; + state[5] = state[9]; + state[9] = state[13]; + state[13] = v; + v = state[2]; + u = state[6]; + state[2] = state[10]; + state[6] = state[14]; + state[10] = v; + state[14] = u; + v = state[3]; + u = state[7]; + t = state[11]; + state[3] = state[15]; + state[7] = v; + state[11] = u; + state[15] = t; + //AddRoundKey + for (j = 0, k = 160; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + return state; + } + + function AES128Cipher(key) { + this.key = expandKey128(key); + this.buffer = new Uint8Array(16); + this.bufferPosition = 0; + } + + function decryptBlock2(data, finalize) { + var i, j, ii, sourceLength = data.length, + buffer = this.buffer, bufferLength = this.bufferPosition, + result = [], iv = this.iv; + for (i = 0; i < sourceLength; ++i) { + buffer[bufferLength] = data[i]; + ++bufferLength; + if (bufferLength < 16) { + continue; + } + // buffer is full, decrypting + var plain = decrypt128(buffer, this.key); + // xor-ing the IV vector to get plain text + for (j = 0; j < 16; ++j) { + plain[j] ^= iv[j]; + } + iv = buffer; + result.push(plain); + buffer = new Uint8Array(16); + bufferLength = 0; + } + // saving incomplete buffer + this.buffer = buffer; + this.bufferLength = bufferLength; + this.iv = iv; + if (result.length === 0) { + return new Uint8Array([]); + } + // combining plain text blocks into one + var outputLength = 16 * result.length; + if (finalize) { + // undo a padding that is described in RFC 2898 + var lastBlock = result[result.length - 1]; + var psLen = lastBlock[15]; + if (psLen <= 16) { + for (i = 15, ii = 16 - psLen; i >= ii; --i) { + if (lastBlock[i] !== psLen) { + // Invalid padding, assume that the block has no padding. + psLen = 0; + break; + } + } + outputLength -= psLen; + result[result.length - 1] = lastBlock.subarray(0, 16 - psLen); + } + } + var output = new Uint8Array(outputLength); + for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) { + output.set(result[i], j); + } + return output; + } + + AES128Cipher.prototype = { + decryptBlock: function AES128Cipher_decryptBlock(data, finalize) { + var i, sourceLength = data.length; + var buffer = this.buffer, bufferLength = this.bufferPosition; + // waiting for IV values -- they are at the start of the stream + for (i = 0; bufferLength < 16 && i < sourceLength; ++i, ++bufferLength) { + buffer[bufferLength] = data[i]; + } + if (bufferLength < 16) { + // need more data + this.bufferLength = bufferLength; + return new Uint8Array([]); + } + this.iv = buffer; + this.buffer = new Uint8Array(16); + this.bufferLength = 0; + // starting decryption + this.decryptBlock = decryptBlock2; + return this.decryptBlock(data.subarray(16), finalize); + }, + encrypt: function AES128Cipher_encrypt(data, iv) { + var i, j, ii, sourceLength = data.length, + buffer = this.buffer, bufferLength = this.bufferPosition, + result = []; + if (!iv) { + iv = new Uint8Array(16); + } + for (i = 0; i < sourceLength; ++i) { + buffer[bufferLength] = data[i]; + ++bufferLength; + if (bufferLength < 16) { + continue; + } + for (j = 0; j < 16; ++j) { + buffer[j] ^= iv[j]; + } + + // buffer is full, encrypting + var cipher = encrypt128(buffer, this.key); + iv = cipher; + result.push(cipher); + buffer = new Uint8Array(16); + bufferLength = 0; + } + // saving incomplete buffer + this.buffer = buffer; + this.bufferLength = bufferLength; + this.iv = iv; + if (result.length === 0) { + return new Uint8Array([]); + } + // combining plain text blocks into one + var outputLength = 16 * result.length; + var output = new Uint8Array(outputLength); + for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) { + output.set(result[i], j); + } + return output; + } + }; + + return AES128Cipher; +})(); + +var AES256Cipher = (function AES256CipherClosure() { + var rcon = new Uint8Array([ + 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, + 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, + 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, + 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, + 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, + 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, + 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, + 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, + 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, + 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, + 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, + 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, + 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, + 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, + 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, + 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, + 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, + 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, + 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, + 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, + 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, + 0x74, 0xe8, 0xcb, 0x8d]); + + var s = new Uint8Array([ + 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, + 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, + 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, + 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, + 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, + 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, + 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, + 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, + 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, + 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, + 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, + 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, + 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, + 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, + 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, + 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, + 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, + 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, + 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, + 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, + 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, + 0xb0, 0x54, 0xbb, 0x16]); + + var inv_s = new Uint8Array([ + 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, + 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, + 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, + 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, + 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, + 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, + 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, + 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, + 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, + 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, + 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, + 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, + 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, + 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, + 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, + 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, + 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, + 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, + 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, + 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, + 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, + 0x55, 0x21, 0x0c, 0x7d]); + + var mixCol = new Uint8Array(256); + for (var i = 0; i < 256; i++) { + if (i < 128) { + mixCol[i] = i << 1; + } else { + mixCol[i] = (i << 1) ^ 0x1b; + } + } + var mix = new Uint32Array([ + 0x00000000, 0x0e090d0b, 0x1c121a16, 0x121b171d, 0x3824342c, 0x362d3927, + 0x24362e3a, 0x2a3f2331, 0x70486858, 0x7e416553, 0x6c5a724e, 0x62537f45, + 0x486c5c74, 0x4665517f, 0x547e4662, 0x5a774b69, 0xe090d0b0, 0xee99ddbb, + 0xfc82caa6, 0xf28bc7ad, 0xd8b4e49c, 0xd6bde997, 0xc4a6fe8a, 0xcaaff381, + 0x90d8b8e8, 0x9ed1b5e3, 0x8ccaa2fe, 0x82c3aff5, 0xa8fc8cc4, 0xa6f581cf, + 0xb4ee96d2, 0xbae79bd9, 0xdb3bbb7b, 0xd532b670, 0xc729a16d, 0xc920ac66, + 0xe31f8f57, 0xed16825c, 0xff0d9541, 0xf104984a, 0xab73d323, 0xa57ade28, + 0xb761c935, 0xb968c43e, 0x9357e70f, 0x9d5eea04, 0x8f45fd19, 0x814cf012, + 0x3bab6bcb, 0x35a266c0, 0x27b971dd, 0x29b07cd6, 0x038f5fe7, 0x0d8652ec, + 0x1f9d45f1, 0x119448fa, 0x4be30393, 0x45ea0e98, 0x57f11985, 0x59f8148e, + 0x73c737bf, 0x7dce3ab4, 0x6fd52da9, 0x61dc20a2, 0xad766df6, 0xa37f60fd, + 0xb16477e0, 0xbf6d7aeb, 0x955259da, 0x9b5b54d1, 0x894043cc, 0x87494ec7, + 0xdd3e05ae, 0xd33708a5, 0xc12c1fb8, 0xcf2512b3, 0xe51a3182, 0xeb133c89, + 0xf9082b94, 0xf701269f, 0x4de6bd46, 0x43efb04d, 0x51f4a750, 0x5ffdaa5b, + 0x75c2896a, 0x7bcb8461, 0x69d0937c, 0x67d99e77, 0x3daed51e, 0x33a7d815, + 0x21bccf08, 0x2fb5c203, 0x058ae132, 0x0b83ec39, 0x1998fb24, 0x1791f62f, + 0x764dd68d, 0x7844db86, 0x6a5fcc9b, 0x6456c190, 0x4e69e2a1, 0x4060efaa, + 0x527bf8b7, 0x5c72f5bc, 0x0605bed5, 0x080cb3de, 0x1a17a4c3, 0x141ea9c8, + 0x3e218af9, 0x302887f2, 0x223390ef, 0x2c3a9de4, 0x96dd063d, 0x98d40b36, + 0x8acf1c2b, 0x84c61120, 0xaef93211, 0xa0f03f1a, 0xb2eb2807, 0xbce2250c, + 0xe6956e65, 0xe89c636e, 0xfa877473, 0xf48e7978, 0xdeb15a49, 0xd0b85742, + 0xc2a3405f, 0xccaa4d54, 0x41ecdaf7, 0x4fe5d7fc, 0x5dfec0e1, 0x53f7cdea, + 0x79c8eedb, 0x77c1e3d0, 0x65daf4cd, 0x6bd3f9c6, 0x31a4b2af, 0x3fadbfa4, + 0x2db6a8b9, 0x23bfa5b2, 0x09808683, 0x07898b88, 0x15929c95, 0x1b9b919e, + 0xa17c0a47, 0xaf75074c, 0xbd6e1051, 0xb3671d5a, 0x99583e6b, 0x97513360, + 0x854a247d, 0x8b432976, 0xd134621f, 0xdf3d6f14, 0xcd267809, 0xc32f7502, + 0xe9105633, 0xe7195b38, 0xf5024c25, 0xfb0b412e, 0x9ad7618c, 0x94de6c87, + 0x86c57b9a, 0x88cc7691, 0xa2f355a0, 0xacfa58ab, 0xbee14fb6, 0xb0e842bd, + 0xea9f09d4, 0xe49604df, 0xf68d13c2, 0xf8841ec9, 0xd2bb3df8, 0xdcb230f3, + 0xcea927ee, 0xc0a02ae5, 0x7a47b13c, 0x744ebc37, 0x6655ab2a, 0x685ca621, + 0x42638510, 0x4c6a881b, 0x5e719f06, 0x5078920d, 0x0a0fd964, 0x0406d46f, + 0x161dc372, 0x1814ce79, 0x322bed48, 0x3c22e043, 0x2e39f75e, 0x2030fa55, + 0xec9ab701, 0xe293ba0a, 0xf088ad17, 0xfe81a01c, 0xd4be832d, 0xdab78e26, + 0xc8ac993b, 0xc6a59430, 0x9cd2df59, 0x92dbd252, 0x80c0c54f, 0x8ec9c844, + 0xa4f6eb75, 0xaaffe67e, 0xb8e4f163, 0xb6edfc68, 0x0c0a67b1, 0x02036aba, + 0x10187da7, 0x1e1170ac, 0x342e539d, 0x3a275e96, 0x283c498b, 0x26354480, + 0x7c420fe9, 0x724b02e2, 0x605015ff, 0x6e5918f4, 0x44663bc5, 0x4a6f36ce, + 0x587421d3, 0x567d2cd8, 0x37a10c7a, 0x39a80171, 0x2bb3166c, 0x25ba1b67, + 0x0f853856, 0x018c355d, 0x13972240, 0x1d9e2f4b, 0x47e96422, 0x49e06929, + 0x5bfb7e34, 0x55f2733f, 0x7fcd500e, 0x71c45d05, 0x63df4a18, 0x6dd64713, + 0xd731dcca, 0xd938d1c1, 0xcb23c6dc, 0xc52acbd7, 0xef15e8e6, 0xe11ce5ed, + 0xf307f2f0, 0xfd0efffb, 0xa779b492, 0xa970b999, 0xbb6bae84, 0xb562a38f, + 0x9f5d80be, 0x91548db5, 0x834f9aa8, 0x8d4697a3]); + + function expandKey256(cipherKey) { + var b = 240, result = new Uint8Array(b); + var r = 1; + + result.set(cipherKey); + for (var j = 32, i = 1; j < b; ++i) { + if (j % 32 === 16) { + t1 = s[t1]; + t2 = s[t2]; + t3 = s[t3]; + t4 = s[t4]; + } else if (j % 32 === 0) { + // RotWord + var t1 = result[j - 3], t2 = result[j - 2], + t3 = result[j - 1], t4 = result[j - 4]; + // SubWord + t1 = s[t1]; + t2 = s[t2]; + t3 = s[t3]; + t4 = s[t4]; + // Rcon + t1 = t1 ^ r; + if ((r <<= 1) >= 256) { + r = (r ^ 0x1b) & 0xFF; + } + } + + for (var n = 0; n < 4; ++n) { + result[j] = (t1 ^= result[j - 32]); + j++; + result[j] = (t2 ^= result[j - 32]); + j++; + result[j] = (t3 ^= result[j - 32]); + j++; + result[j] = (t4 ^= result[j - 32]); + j++; + } + } + return result; + } + + function decrypt256(input, key) { + var state = new Uint8Array(16); + state.set(input); + var i, j, k; + var t, u, v; + // AddRoundKey + for (j = 0, k = 224; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + for (i = 13; i >= 1; --i) { + // InvShiftRows + t = state[13]; + state[13] = state[9]; + state[9] = state[5]; + state[5] = state[1]; + state[1] = t; + t = state[14]; + u = state[10]; + state[14] = state[6]; + state[10] = state[2]; + state[6] = t; + state[2] = u; + t = state[15]; + u = state[11]; + v = state[7]; + state[15] = state[3]; + state[11] = t; + state[7] = u; + state[3] = v; + // InvSubBytes + for (j = 0; j < 16; ++j) { + state[j] = inv_s[state[j]]; + } + // AddRoundKey + for (j = 0, k = i * 16; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + // InvMixColumns + for (j = 0; j < 16; j += 4) { + var s0 = mix[state[j]], s1 = mix[state[j + 1]], + s2 = mix[state[j + 2]], s3 = mix[state[j + 3]]; + t = (s0 ^ (s1 >>> 8) ^ (s1 << 24) ^ (s2 >>> 16) ^ (s2 << 16) ^ + (s3 >>> 24) ^ (s3 << 8)); + state[j] = (t >>> 24) & 0xFF; + state[j + 1] = (t >> 16) & 0xFF; + state[j + 2] = (t >> 8) & 0xFF; + state[j + 3] = t & 0xFF; + } + } + // InvShiftRows + t = state[13]; + state[13] = state[9]; + state[9] = state[5]; + state[5] = state[1]; + state[1] = t; + t = state[14]; + u = state[10]; + state[14] = state[6]; + state[10] = state[2]; + state[6] = t; + state[2] = u; + t = state[15]; + u = state[11]; + v = state[7]; + state[15] = state[3]; + state[11] = t; + state[7] = u; + state[3] = v; + for (j = 0; j < 16; ++j) { + // InvSubBytes + state[j] = inv_s[state[j]]; + // AddRoundKey + state[j] ^= key[j]; + } + return state; + } + + function encrypt256(input, key) { + var t, u, v, k; + var state = new Uint8Array(16); + state.set(input); + for (j = 0; j < 16; ++j) { + // AddRoundKey + state[j] ^= key[j]; + } + + for (i = 1; i < 14; i++) { + //SubBytes + for (j = 0; j < 16; ++j) { + state[j] = s[state[j]]; + } + //ShiftRows + v = state[1]; + state[1] = state[5]; + state[5] = state[9]; + state[9] = state[13]; + state[13] = v; + v = state[2]; + u = state[6]; + state[2] = state[10]; + state[6] = state[14]; + state[10] = v; + state[14] = u; + v = state[3]; + u = state[7]; + t = state[11]; + state[3] = state[15]; + state[7] = v; + state[11] = u; + state[15] = t; + //MixColumns + for (var j = 0; j < 16; j += 4) { + var s0 = state[j + 0], s1 = state[j + 1]; + var s2 = state[j + 2], s3 = state[j + 3]; + t = s0 ^ s1 ^ s2 ^ s3; + state[j + 0] ^= t ^ mixCol[s0 ^ s1]; + state[j + 1] ^= t ^ mixCol[s1 ^ s2]; + state[j + 2] ^= t ^ mixCol[s2 ^ s3]; + state[j + 3] ^= t ^ mixCol[s3 ^ s0]; + } + //AddRoundKey + for (j = 0, k = i * 16; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + } + + //SubBytes + for (j = 0; j < 16; ++j) { + state[j] = s[state[j]]; + } + //ShiftRows + v = state[1]; + state[1] = state[5]; + state[5] = state[9]; + state[9] = state[13]; + state[13] = v; + v = state[2]; + u = state[6]; + state[2] = state[10]; + state[6] = state[14]; + state[10] = v; + state[14] = u; + v = state[3]; + u = state[7]; + t = state[11]; + state[3] = state[15]; + state[7] = v; + state[11] = u; + state[15] = t; + //AddRoundKey + for (j = 0, k = 224; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + + return state; + + } + + function AES256Cipher(key) { + this.key = expandKey256(key); + this.buffer = new Uint8Array(16); + this.bufferPosition = 0; + } + + function decryptBlock2(data, finalize) { + var i, j, ii, sourceLength = data.length, + buffer = this.buffer, bufferLength = this.bufferPosition, + result = [], iv = this.iv; + + for (i = 0; i < sourceLength; ++i) { + buffer[bufferLength] = data[i]; + ++bufferLength; + if (bufferLength < 16) { + continue; + } + // buffer is full, decrypting + var plain = decrypt256(buffer, this.key); + // xor-ing the IV vector to get plain text + for (j = 0; j < 16; ++j) { + plain[j] ^= iv[j]; + } + iv = buffer; + result.push(plain); + buffer = new Uint8Array(16); + bufferLength = 0; + } + // saving incomplete buffer + this.buffer = buffer; + this.bufferLength = bufferLength; + this.iv = iv; + if (result.length === 0) { + return new Uint8Array([]); + } + // combining plain text blocks into one + var outputLength = 16 * result.length; + if (finalize) { + // undo a padding that is described in RFC 2898 + var lastBlock = result[result.length - 1]; + var psLen = lastBlock[15]; + if (psLen <= 16) { + for (i = 15, ii = 16 - psLen; i >= ii; --i) { + if (lastBlock[i] !== psLen) { + // Invalid padding, assume that the block has no padding. + psLen = 0; + break; + } + } + outputLength -= psLen; + result[result.length - 1] = lastBlock.subarray(0, 16 - psLen); + } + } + var output = new Uint8Array(outputLength); + for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) { + output.set(result[i], j); + } + return output; + + } + + AES256Cipher.prototype = { + decryptBlock: function AES256Cipher_decryptBlock(data, finalize, iv) { + var i, sourceLength = data.length; + var buffer = this.buffer, bufferLength = this.bufferPosition; + // if not supplied an IV wait for IV values + // they are at the start of the stream + if (iv) { + this.iv = iv; + } else { + for (i = 0; bufferLength < 16 && + i < sourceLength; ++i, ++bufferLength) { + buffer[bufferLength] = data[i]; + } + if (bufferLength < 16) { + //need more data + this.bufferLength = bufferLength; + return new Uint8Array([]); + } + this.iv = buffer; + data = data.subarray(16); + } + this.buffer = new Uint8Array(16); + this.bufferLength = 0; + // starting decryption + this.decryptBlock = decryptBlock2; + return this.decryptBlock(data, finalize); + }, + encrypt: function AES256Cipher_encrypt(data, iv) { + var i, j, ii, sourceLength = data.length, + buffer = this.buffer, bufferLength = this.bufferPosition, + result = []; + if (!iv) { + iv = new Uint8Array(16); + } + for (i = 0; i < sourceLength; ++i) { + buffer[bufferLength] = data[i]; + ++bufferLength; + if (bufferLength < 16) { + continue; + } + for (j = 0; j < 16; ++j) { + buffer[j] ^= iv[j]; + } + + // buffer is full, encrypting + var cipher = encrypt256(buffer, this.key); + this.iv = cipher; + result.push(cipher); + buffer = new Uint8Array(16); + bufferLength = 0; + } + // saving incomplete buffer + this.buffer = buffer; + this.bufferLength = bufferLength; + this.iv = iv; + if (result.length === 0) { + return new Uint8Array([]); + } + // combining plain text blocks into one + var outputLength = 16 * result.length; + var output = new Uint8Array(outputLength); + for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) { + output.set(result[i], j); + } + return output; + } + }; + + return AES256Cipher; +})(); + +var PDF17 = (function PDF17Closure() { + + function compareByteArrays(array1, array2) { + if (array1.length !== array2.length) { + return false; + } + for (var i = 0; i < array1.length; i++) { + if (array1[i] !== array2[i]) { + return false; + } + } + return true; + } + + function PDF17() { + } + + PDF17.prototype = { + checkOwnerPassword: function PDF17_checkOwnerPassword(password, + ownerValidationSalt, + userBytes, + ownerPassword) { + var hashData = new Uint8Array(password.length + 56); + hashData.set(password, 0); + hashData.set(ownerValidationSalt, password.length); + hashData.set(userBytes, password.length + ownerValidationSalt.length); + var result = calculateSHA256(hashData, 0, hashData.length); + return compareByteArrays(result, ownerPassword); + }, + checkUserPassword: function PDF17_checkUserPassword(password, + userValidationSalt, + userPassword) { + var hashData = new Uint8Array(password.length + 8); + hashData.set(password, 0); + hashData.set(userValidationSalt, password.length); + var result = calculateSHA256(hashData, 0, hashData.length); + return compareByteArrays(result, userPassword); + }, + getOwnerKey: function PDF17_getOwnerKey(password, ownerKeySalt, userBytes, + ownerEncryption) { + var hashData = new Uint8Array(password.length + 56); + hashData.set(password, 0); + hashData.set(ownerKeySalt, password.length); + hashData.set(userBytes, password.length + ownerKeySalt.length); + var key = calculateSHA256(hashData, 0, hashData.length); + var cipher = new AES256Cipher(key); + return cipher.decryptBlock(ownerEncryption, + false, + new Uint8Array(16)); + + }, + getUserKey: function PDF17_getUserKey(password, userKeySalt, + userEncryption) { + var hashData = new Uint8Array(password.length + 8); + hashData.set(password, 0); + hashData.set(userKeySalt, password.length); + //key is the decryption key for the UE string + var key = calculateSHA256(hashData, 0, hashData.length); + var cipher = new AES256Cipher(key); + return cipher.decryptBlock(userEncryption, + false, + new Uint8Array(16)); + } + }; + return PDF17; +})(); + +var PDF20 = (function PDF20Closure() { + + function concatArrays(array1, array2) { + var t = new Uint8Array(array1.length + array2.length); + t.set(array1, 0); + t.set(array2, array1.length); + return t; + } + + function calculatePDF20Hash(password, input, userBytes) { + //This refers to Algorithm 2.B as defined in ISO 32000-2 + var k = calculateSHA256(input, 0, input.length).subarray(0, 32); + var e = [0]; + var i = 0; + while (i < 64 || e[e.length - 1] > i - 32) { + var arrayLength = password.length + k.length + userBytes.length; + + var k1 = new Uint8Array(arrayLength * 64); + var array = concatArrays(password, k); + array = concatArrays(array, userBytes); + for (var j = 0, pos = 0; j < 64; j++, pos += arrayLength) { + k1.set(array, pos); + } + //AES128 CBC NO PADDING with + //first 16 bytes of k as the key and the second 16 as the iv. + var cipher = new AES128Cipher(k.subarray(0, 16)); + e = cipher.encrypt(k1, k.subarray(16, 32)); + //Now we have to take the first 16 bytes of an unsigned + //big endian integer... and compute the remainder + //modulo 3.... That is a fairly large number and + //JavaScript isn't going to handle that well... + //So we're using a trick that allows us to perform + //modulo math byte by byte + var remainder = 0; + for (var z = 0; z < 16; z++) { + remainder *= (256 % 3); + remainder %= 3; + remainder += ((e[z] >>> 0) % 3); + remainder %= 3; + } + if (remainder === 0) { + k = calculateSHA256(e, 0, e.length); + } + else if (remainder === 1) { + k = calculateSHA384(e, 0, e.length); + } + else if (remainder === 2) { + k = calculateSHA512(e, 0, e.length); + } + i++; + } + return k.subarray(0, 32); + } + + function PDF20() { + } + + function compareByteArrays(array1, array2) { + if (array1.length !== array2.length) { + return false; + } + for (var i = 0; i < array1.length; i++) { + if (array1[i] !== array2[i]) { + return false; + } + } + return true; + } + + PDF20.prototype = { + hash: function PDF20_hash(password, concatBytes, userBytes) { + return calculatePDF20Hash(password, concatBytes, userBytes); + }, + checkOwnerPassword: function PDF20_checkOwnerPassword(password, + ownerValidationSalt, + userBytes, + ownerPassword) { + var hashData = new Uint8Array(password.length + 56); + hashData.set(password, 0); + hashData.set(ownerValidationSalt, password.length); + hashData.set(userBytes, password.length + ownerValidationSalt.length); + var result = calculatePDF20Hash(password, hashData, userBytes); + return compareByteArrays(result, ownerPassword); + }, + checkUserPassword: function PDF20_checkUserPassword(password, + userValidationSalt, + userPassword) { + var hashData = new Uint8Array(password.length + 8); + hashData.set(password, 0); + hashData.set(userValidationSalt, password.length); + var result = calculatePDF20Hash(password, hashData, []); + return compareByteArrays(result, userPassword); + }, + getOwnerKey: function PDF20_getOwnerKey(password, ownerKeySalt, userBytes, + ownerEncryption) { + var hashData = new Uint8Array(password.length + 56); + hashData.set(password, 0); + hashData.set(ownerKeySalt, password.length); + hashData.set(userBytes, password.length + ownerKeySalt.length); + var key = calculatePDF20Hash(password, hashData, userBytes); + var cipher = new AES256Cipher(key); + return cipher.decryptBlock(ownerEncryption, + false, + new Uint8Array(16)); + + }, + getUserKey: function PDF20_getUserKey(password, userKeySalt, + userEncryption) { + var hashData = new Uint8Array(password.length + 8); + hashData.set(password, 0); + hashData.set(userKeySalt, password.length); + //key is the decryption key for the UE string + var key = calculatePDF20Hash(password, hashData, []); + var cipher = new AES256Cipher(key); + return cipher.decryptBlock(userEncryption, + false, + new Uint8Array(16)); + } + }; + return PDF20; +})(); + +var CipherTransform = (function CipherTransformClosure() { + function CipherTransform(stringCipherConstructor, streamCipherConstructor) { + this.stringCipherConstructor = stringCipherConstructor; + this.streamCipherConstructor = streamCipherConstructor; + } + + CipherTransform.prototype = { + createStream: function CipherTransform_createStream(stream, length) { + var cipher = new this.streamCipherConstructor(); + return new DecryptStream(stream, length, + function cipherTransformDecryptStream(data, finalize) { + return cipher.decryptBlock(data, finalize); + } + ); + }, + decryptString: function CipherTransform_decryptString(s) { + var cipher = new this.stringCipherConstructor(); + var data = stringToBytes(s); + data = cipher.decryptBlock(data, true); + return bytesToString(data); + } + }; + return CipherTransform; +})(); + +var CipherTransformFactory = (function CipherTransformFactoryClosure() { + var defaultPasswordBytes = new Uint8Array([ + 0x28, 0xBF, 0x4E, 0x5E, 0x4E, 0x75, 0x8A, 0x41, + 0x64, 0x00, 0x4E, 0x56, 0xFF, 0xFA, 0x01, 0x08, + 0x2E, 0x2E, 0x00, 0xB6, 0xD0, 0x68, 0x3E, 0x80, + 0x2F, 0x0C, 0xA9, 0xFE, 0x64, 0x53, 0x69, 0x7A]); + + function createEncryptionKey20(revision, password, ownerPassword, + ownerValidationSalt, ownerKeySalt, uBytes, + userPassword, userValidationSalt, userKeySalt, + ownerEncryption, userEncryption, perms) { + if (password) { + var passwordLength = Math.min(127, password.length); + password = password.subarray(0, passwordLength); + } else { + password = []; + } + var pdfAlgorithm; + if (revision === 6) { + pdfAlgorithm = new PDF20(); + } else { + pdfAlgorithm = new PDF17(); + } + + if (pdfAlgorithm) { + if (pdfAlgorithm.checkUserPassword(password, userValidationSalt, + userPassword)) { + return pdfAlgorithm.getUserKey(password, userKeySalt, userEncryption); + } else if (pdfAlgorithm.checkOwnerPassword(password, ownerValidationSalt, + uBytes, + ownerPassword)) { + return pdfAlgorithm.getOwnerKey(password, ownerKeySalt, uBytes, + ownerEncryption); + } + } + + return null; + } + + function prepareKeyData(fileId, password, ownerPassword, userPassword, + flags, revision, keyLength, encryptMetadata) { + var hashDataSize = 40 + ownerPassword.length + fileId.length; + var hashData = new Uint8Array(hashDataSize), i = 0, j, n; + if (password) { + n = Math.min(32, password.length); + for (; i < n; ++i) { + hashData[i] = password[i]; + } + } + j = 0; + while (i < 32) { + hashData[i++] = defaultPasswordBytes[j++]; + } + // as now the padded password in the hashData[0..i] + for (j = 0, n = ownerPassword.length; j < n; ++j) { + hashData[i++] = ownerPassword[j]; + } + hashData[i++] = flags & 0xFF; + hashData[i++] = (flags >> 8) & 0xFF; + hashData[i++] = (flags >> 16) & 0xFF; + hashData[i++] = (flags >>> 24) & 0xFF; + for (j = 0, n = fileId.length; j < n; ++j) { + hashData[i++] = fileId[j]; + } + if (revision >= 4 && !encryptMetadata) { + hashData[i++] = 0xFF; + hashData[i++] = 0xFF; + hashData[i++] = 0xFF; + hashData[i++] = 0xFF; + } + var hash = calculateMD5(hashData, 0, i); + var keyLengthInBytes = keyLength >> 3; + if (revision >= 3) { + for (j = 0; j < 50; ++j) { + hash = calculateMD5(hash, 0, keyLengthInBytes); + } + } + var encryptionKey = hash.subarray(0, keyLengthInBytes); + var cipher, checkData; + + if (revision >= 3) { + for (i = 0; i < 32; ++i) { + hashData[i] = defaultPasswordBytes[i]; + } + for (j = 0, n = fileId.length; j < n; ++j) { + hashData[i++] = fileId[j]; + } + cipher = new ARCFourCipher(encryptionKey); + checkData = cipher.encryptBlock(calculateMD5(hashData, 0, i)); + n = encryptionKey.length; + var derivedKey = new Uint8Array(n), k; + for (j = 1; j <= 19; ++j) { + for (k = 0; k < n; ++k) { + derivedKey[k] = encryptionKey[k] ^ j; + } + cipher = new ARCFourCipher(derivedKey); + checkData = cipher.encryptBlock(checkData); + } + for (j = 0, n = checkData.length; j < n; ++j) { + if (userPassword[j] !== checkData[j]) { + return null; + } + } + } else { + cipher = new ARCFourCipher(encryptionKey); + checkData = cipher.encryptBlock(defaultPasswordBytes); + for (j = 0, n = checkData.length; j < n; ++j) { + if (userPassword[j] !== checkData[j]) { + return null; + } + } + } + return encryptionKey; + } + + function decodeUserPassword(password, ownerPassword, revision, keyLength) { + var hashData = new Uint8Array(32), i = 0, j, n; + n = Math.min(32, password.length); + for (; i < n; ++i) { + hashData[i] = password[i]; + } + j = 0; + while (i < 32) { + hashData[i++] = defaultPasswordBytes[j++]; + } + var hash = calculateMD5(hashData, 0, i); + var keyLengthInBytes = keyLength >> 3; + if (revision >= 3) { + for (j = 0; j < 50; ++j) { + hash = calculateMD5(hash, 0, hash.length); + } + } + + var cipher, userPassword; + if (revision >= 3) { + userPassword = ownerPassword; + var derivedKey = new Uint8Array(keyLengthInBytes), k; + for (j = 19; j >= 0; j--) { + for (k = 0; k < keyLengthInBytes; ++k) { + derivedKey[k] = hash[k] ^ j; + } + cipher = new ARCFourCipher(derivedKey); + userPassword = cipher.encryptBlock(userPassword); + } + } else { + cipher = new ARCFourCipher(hash.subarray(0, keyLengthInBytes)); + userPassword = cipher.encryptBlock(ownerPassword); + } + return userPassword; + } + + var identityName = Name.get('Identity'); + + function CipherTransformFactory(dict, fileId, password) { + var filter = dict.get('Filter'); + if (!isName(filter) || filter.name !== 'Standard') { + error('unknown encryption method'); + } + this.dict = dict; + var algorithm = dict.get('V'); + if (!isInt(algorithm) || + (algorithm !== 1 && algorithm !== 2 && algorithm !== 4 && + algorithm !== 5)) { + error('unsupported encryption algorithm'); + } + this.algorithm = algorithm; + var keyLength = dict.get('Length') || 40; + if (!isInt(keyLength) || + keyLength < 40 || (keyLength % 8) !== 0) { + error('invalid key length'); + } + + // prepare keys + var ownerPassword = stringToBytes(dict.get('O')).subarray(0, 32); + var userPassword = stringToBytes(dict.get('U')).subarray(0, 32); + var flags = dict.get('P'); + var revision = dict.get('R'); + // meaningful when V is 4 or 5 + var encryptMetadata = ((algorithm === 4 || algorithm === 5) && + dict.get('EncryptMetadata') !== false); + this.encryptMetadata = encryptMetadata; + + var fileIdBytes = stringToBytes(fileId); + var passwordBytes; + if (password) { + passwordBytes = stringToBytes(password); + } + + var encryptionKey; + if (algorithm !== 5) { + encryptionKey = prepareKeyData(fileIdBytes, passwordBytes, + ownerPassword, userPassword, flags, + revision, keyLength, encryptMetadata); + } + else { + var ownerValidationSalt = stringToBytes(dict.get('O')).subarray(32, 40); + var ownerKeySalt = stringToBytes(dict.get('O')).subarray(40, 48); + var uBytes = stringToBytes(dict.get('U')).subarray(0, 48); + var userValidationSalt = stringToBytes(dict.get('U')).subarray(32, 40); + var userKeySalt = stringToBytes(dict.get('U')).subarray(40, 48); + var ownerEncryption = stringToBytes(dict.get('OE')); + var userEncryption = stringToBytes(dict.get('UE')); + var perms = stringToBytes(dict.get('Perms')); + encryptionKey = + createEncryptionKey20(revision, passwordBytes, + ownerPassword, ownerValidationSalt, + ownerKeySalt, uBytes, + userPassword, userValidationSalt, + userKeySalt, ownerEncryption, + userEncryption, perms); + } + if (!encryptionKey && !password) { + throw new PasswordException('No password given', + PasswordResponses.NEED_PASSWORD); + } else if (!encryptionKey && password) { + // Attempting use the password as an owner password + var decodedPassword = decodeUserPassword(passwordBytes, ownerPassword, + revision, keyLength); + encryptionKey = prepareKeyData(fileIdBytes, decodedPassword, + ownerPassword, userPassword, flags, + revision, keyLength, encryptMetadata); + } + + if (!encryptionKey) { + throw new PasswordException('Incorrect Password', + PasswordResponses.INCORRECT_PASSWORD); + } + + this.encryptionKey = encryptionKey; + + if (algorithm >= 4) { + this.cf = dict.get('CF'); + this.stmf = dict.get('StmF') || identityName; + this.strf = dict.get('StrF') || identityName; + this.eff = dict.get('EFF') || this.stmf; + } + } + + function buildObjectKey(num, gen, encryptionKey, isAes) { + var key = new Uint8Array(encryptionKey.length + 9), i, n; + for (i = 0, n = encryptionKey.length; i < n; ++i) { + key[i] = encryptionKey[i]; + } + key[i++] = num & 0xFF; + key[i++] = (num >> 8) & 0xFF; + key[i++] = (num >> 16) & 0xFF; + key[i++] = gen & 0xFF; + key[i++] = (gen >> 8) & 0xFF; + if (isAes) { + key[i++] = 0x73; + key[i++] = 0x41; + key[i++] = 0x6C; + key[i++] = 0x54; + } + var hash = calculateMD5(key, 0, i); + return hash.subarray(0, Math.min(encryptionKey.length + 5, 16)); + } + + function buildCipherConstructor(cf, name, num, gen, key) { + var cryptFilter = cf.get(name.name); + var cfm; + if (cryptFilter !== null && cryptFilter !== undefined) { + cfm = cryptFilter.get('CFM'); + } + if (!cfm || cfm.name === 'None') { + return function cipherTransformFactoryBuildCipherConstructorNone() { + return new NullCipher(); + }; + } + if ('V2' === cfm.name) { + return function cipherTransformFactoryBuildCipherConstructorV2() { + return new ARCFourCipher(buildObjectKey(num, gen, key, false)); + }; + } + if ('AESV2' === cfm.name) { + return function cipherTransformFactoryBuildCipherConstructorAESV2() { + return new AES128Cipher(buildObjectKey(num, gen, key, true)); + }; + } + if ('AESV3' === cfm.name) { + return function cipherTransformFactoryBuildCipherConstructorAESV3() { + return new AES256Cipher(key); + }; + } + error('Unknown crypto method'); + } + + CipherTransformFactory.prototype = { + createCipherTransform: + function CipherTransformFactory_createCipherTransform(num, gen) { + if (this.algorithm === 4 || this.algorithm === 5) { + return new CipherTransform( + buildCipherConstructor(this.cf, this.stmf, + num, gen, this.encryptionKey), + buildCipherConstructor(this.cf, this.strf, + num, gen, this.encryptionKey)); + } + // algorithms 1 and 2 + var key = buildObjectKey(num, gen, this.encryptionKey, false); + var cipherConstructor = function buildCipherCipherConstructor() { + return new ARCFourCipher(key); + }; + return new CipherTransform(cipherConstructor, cipherConstructor); + } + }; + + return CipherTransformFactory; +})(); + + +var PatternType = { + FUNCTION_BASED: 1, + AXIAL: 2, + RADIAL: 3, + FREE_FORM_MESH: 4, + LATTICE_FORM_MESH: 5, + COONS_PATCH_MESH: 6, + TENSOR_PATCH_MESH: 7 +}; + +var Pattern = (function PatternClosure() { + // Constructor should define this.getPattern + function Pattern() { + error('should not call Pattern constructor'); + } + + Pattern.prototype = { + // Input: current Canvas context + // Output: the appropriate fillStyle or strokeStyle + getPattern: function Pattern_getPattern(ctx) { + error('Should not call Pattern.getStyle: ' + ctx); + } + }; + + Pattern.parseShading = function Pattern_parseShading(shading, matrix, xref, + res) { + + var dict = isStream(shading) ? shading.dict : shading; + var type = dict.get('ShadingType'); + + try { + switch (type) { + case PatternType.AXIAL: + case PatternType.RADIAL: + // Both radial and axial shadings are handled by RadialAxial shading. + return new Shadings.RadialAxial(dict, matrix, xref, res); + case PatternType.FREE_FORM_MESH: + case PatternType.LATTICE_FORM_MESH: + case PatternType.COONS_PATCH_MESH: + case PatternType.TENSOR_PATCH_MESH: + return new Shadings.Mesh(shading, matrix, xref, res); + default: + throw new Error('Unknown PatternType: ' + type); + } + } catch (ex) { + if (ex instanceof MissingDataException) { + throw ex; + } + UnsupportedManager.notify(UNSUPPORTED_FEATURES.shadingPattern); + warn(ex); + return new Shadings.Dummy(); + } + }; + return Pattern; +})(); + +var Shadings = {}; + +// A small number to offset the first/last color stops so we can insert ones to +// support extend. Number.MIN_VALUE appears to be too small and breaks the +// extend. 1e-7 works in FF but chrome seems to use an even smaller sized number +// internally so we have to go bigger. +Shadings.SMALL_NUMBER = 1e-2; + +// Radial and axial shading have very similar implementations +// If needed, the implementations can be broken into two classes +Shadings.RadialAxial = (function RadialAxialClosure() { + function RadialAxial(dict, matrix, xref, res) { + this.matrix = matrix; + this.coordsArr = dict.get('Coords'); + this.shadingType = dict.get('ShadingType'); + this.type = 'Pattern'; + var cs = dict.get('ColorSpace', 'CS'); + cs = ColorSpace.parse(cs, xref, res); + this.cs = cs; + + var t0 = 0.0, t1 = 1.0; + if (dict.has('Domain')) { + var domainArr = dict.get('Domain'); + t0 = domainArr[0]; + t1 = domainArr[1]; + } + + var extendStart = false, extendEnd = false; + if (dict.has('Extend')) { + var extendArr = dict.get('Extend'); + extendStart = extendArr[0]; + extendEnd = extendArr[1]; + } + + if (this.shadingType === PatternType.RADIAL && + (!extendStart || !extendEnd)) { + // Radial gradient only currently works if either circle is fully within + // the other circle. + var x1 = this.coordsArr[0]; + var y1 = this.coordsArr[1]; + var r1 = this.coordsArr[2]; + var x2 = this.coordsArr[3]; + var y2 = this.coordsArr[4]; + var r2 = this.coordsArr[5]; + var distance = Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2)); + if (r1 <= r2 + distance && + r2 <= r1 + distance) { + warn('Unsupported radial gradient.'); + } + } + + this.extendStart = extendStart; + this.extendEnd = extendEnd; + + var fnObj = dict.get('Function'); + var fn = PDFFunction.parseArray(xref, fnObj); + + // 10 samples seems good enough for now, but probably won't work + // if there are sharp color changes. Ideally, we would implement + // the spec faithfully and add lossless optimizations. + var diff = t1 - t0; + var step = diff / 10; + + var colorStops = this.colorStops = []; + + // Protect against bad domains so we don't end up in an infinte loop below. + if (t0 >= t1 || step <= 0) { + // Acrobat doesn't seem to handle these cases so we'll ignore for + // now. + info('Bad shading domain.'); + return; + } + + var color = new Float32Array(cs.numComps), ratio = new Float32Array(1); + var rgbColor; + for (var i = t0; i <= t1; i += step) { + ratio[0] = i; + fn(ratio, 0, color, 0); + rgbColor = cs.getRgb(color, 0); + var cssColor = Util.makeCssRgb(rgbColor[0], rgbColor[1], rgbColor[2]); + colorStops.push([(i - t0) / diff, cssColor]); + } + + var background = 'transparent'; + if (dict.has('Background')) { + rgbColor = cs.getRgb(dict.get('Background'), 0); + background = Util.makeCssRgb(rgbColor[0], rgbColor[1], rgbColor[2]); + } + + if (!extendStart) { + // Insert a color stop at the front and offset the first real color stop + // so it doesn't conflict with the one we insert. + colorStops.unshift([0, background]); + colorStops[1][0] += Shadings.SMALL_NUMBER; + } + if (!extendEnd) { + // Same idea as above in extendStart but for the end. + colorStops[colorStops.length - 1][0] -= Shadings.SMALL_NUMBER; + colorStops.push([1, background]); + } + + this.colorStops = colorStops; + } + + RadialAxial.prototype = { + getIR: function RadialAxial_getIR() { + var coordsArr = this.coordsArr; + var shadingType = this.shadingType; + var type, p0, p1, r0, r1; + if (shadingType === PatternType.AXIAL) { + p0 = [coordsArr[0], coordsArr[1]]; + p1 = [coordsArr[2], coordsArr[3]]; + r0 = null; + r1 = null; + type = 'axial'; + } else if (shadingType === PatternType.RADIAL) { + p0 = [coordsArr[0], coordsArr[1]]; + p1 = [coordsArr[3], coordsArr[4]]; + r0 = coordsArr[2]; + r1 = coordsArr[5]; + type = 'radial'; + } else { + error('getPattern type unknown: ' + shadingType); + } + + var matrix = this.matrix; + if (matrix) { + p0 = Util.applyTransform(p0, matrix); + p1 = Util.applyTransform(p1, matrix); + } + + return ['RadialAxial', type, this.colorStops, p0, p1, r0, r1]; + } + }; + + return RadialAxial; +})(); + +// All mesh shading. For now, they will be presented as set of the triangles +// to be drawn on the canvas and rgb color for each vertex. +Shadings.Mesh = (function MeshClosure() { + function MeshStreamReader(stream, context) { + this.stream = stream; + this.context = context; + this.buffer = 0; + this.bufferLength = 0; + + var numComps = context.numComps; + this.tmpCompsBuf = new Float32Array(numComps); + var csNumComps = context.colorSpace; + this.tmpCsCompsBuf = context.colorFn ? new Float32Array(csNumComps) : + this.tmpCompsBuf; + } + MeshStreamReader.prototype = { + get hasData() { + if (this.stream.end) { + return this.stream.pos < this.stream.end; + } + if (this.bufferLength > 0) { + return true; + } + var nextByte = this.stream.getByte(); + if (nextByte < 0) { + return false; + } + this.buffer = nextByte; + this.bufferLength = 8; + return true; + }, + readBits: function MeshStreamReader_readBits(n) { + var buffer = this.buffer; + var bufferLength = this.bufferLength; + if (n === 32) { + if (bufferLength === 0) { + return ((this.stream.getByte() << 24) | + (this.stream.getByte() << 16) | (this.stream.getByte() << 8) | + this.stream.getByte()) >>> 0; + } + buffer = (buffer << 24) | (this.stream.getByte() << 16) | + (this.stream.getByte() << 8) | this.stream.getByte(); + var nextByte = this.stream.getByte(); + this.buffer = nextByte & ((1 << bufferLength) - 1); + return ((buffer << (8 - bufferLength)) | + ((nextByte & 0xFF) >> bufferLength)) >>> 0; + } + if (n === 8 && bufferLength === 0) { + return this.stream.getByte(); + } + while (bufferLength < n) { + buffer = (buffer << 8) | this.stream.getByte(); + bufferLength += 8; + } + bufferLength -= n; + this.bufferLength = bufferLength; + this.buffer = buffer & ((1 << bufferLength) - 1); + return buffer >> bufferLength; + }, + align: function MeshStreamReader_align() { + this.buffer = 0; + this.bufferLength = 0; + }, + readFlag: function MeshStreamReader_readFlag() { + return this.readBits(this.context.bitsPerFlag); + }, + readCoordinate: function MeshStreamReader_readCoordinate() { + var bitsPerCoordinate = this.context.bitsPerCoordinate; + var xi = this.readBits(bitsPerCoordinate); + var yi = this.readBits(bitsPerCoordinate); + var decode = this.context.decode; + var scale = bitsPerCoordinate < 32 ? 1 / ((1 << bitsPerCoordinate) - 1) : + 2.3283064365386963e-10; // 2 ^ -32 + return [ + xi * scale * (decode[1] - decode[0]) + decode[0], + yi * scale * (decode[3] - decode[2]) + decode[2] + ]; + }, + readComponents: function MeshStreamReader_readComponents() { + var numComps = this.context.numComps; + var bitsPerComponent = this.context.bitsPerComponent; + var scale = bitsPerComponent < 32 ? 1 / ((1 << bitsPerComponent) - 1) : + 2.3283064365386963e-10; // 2 ^ -32 + var decode = this.context.decode; + var components = this.tmpCompsBuf; + for (var i = 0, j = 4; i < numComps; i++, j += 2) { + var ci = this.readBits(bitsPerComponent); + components[i] = ci * scale * (decode[j + 1] - decode[j]) + decode[j]; + } + var color = this.tmpCsCompsBuf; + if (this.context.colorFn) { + this.context.colorFn(components, 0, color, 0); + } + return this.context.colorSpace.getRgb(color, 0); + } + }; + + function decodeType4Shading(mesh, reader) { + var coords = mesh.coords; + var colors = mesh.colors; + var operators = []; + var ps = []; // not maintaining cs since that will match ps + var verticesLeft = 0; // assuming we have all data to start a new triangle + while (reader.hasData) { + var f = reader.readFlag(); + var coord = reader.readCoordinate(); + var color = reader.readComponents(); + if (verticesLeft === 0) { // ignoring flags if we started a triangle + assert(0 <= f && f <= 2, 'Unknown type4 flag'); + switch (f) { + case 0: + verticesLeft = 3; + break; + case 1: + ps.push(ps[ps.length - 2], ps[ps.length - 1]); + verticesLeft = 1; + break; + case 2: + ps.push(ps[ps.length - 3], ps[ps.length - 1]); + verticesLeft = 1; + break; + } + operators.push(f); + } + ps.push(coords.length); + coords.push(coord); + colors.push(color); + verticesLeft--; + + reader.align(); + } + + var psPacked = new Int32Array(ps); + + mesh.figures.push({ + type: 'triangles', + coords: psPacked, + colors: psPacked + }); + } + + function decodeType5Shading(mesh, reader, verticesPerRow) { + var coords = mesh.coords; + var colors = mesh.colors; + var ps = []; // not maintaining cs since that will match ps + while (reader.hasData) { + var coord = reader.readCoordinate(); + var color = reader.readComponents(); + ps.push(coords.length); + coords.push(coord); + colors.push(color); + } + + var psPacked = new Int32Array(ps); + + mesh.figures.push({ + type: 'lattice', + coords: psPacked, + colors: psPacked, + verticesPerRow: verticesPerRow + }); + } + + var MIN_SPLIT_PATCH_CHUNKS_AMOUNT = 3; + var MAX_SPLIT_PATCH_CHUNKS_AMOUNT = 20; + + var TRIANGLE_DENSITY = 20; // count of triangles per entire mesh bounds + + var getB = (function getBClosure() { + function buildB(count) { + var lut = []; + for (var i = 0; i <= count; i++) { + var t = i / count, t_ = 1 - t; + lut.push(new Float32Array([t_ * t_ * t_, 3 * t * t_ * t_, + 3 * t * t * t_, t * t * t])); + } + return lut; + } + var cache = []; + return function getB(count) { + if (!cache[count]) { + cache[count] = buildB(count); + } + return cache[count]; + }; + })(); + + function buildFigureFromPatch(mesh, index) { + var figure = mesh.figures[index]; + assert(figure.type === 'patch', 'Unexpected patch mesh figure'); + + var coords = mesh.coords, colors = mesh.colors; + var pi = figure.coords; + var ci = figure.colors; + + var figureMinX = Math.min(coords[pi[0]][0], coords[pi[3]][0], + coords[pi[12]][0], coords[pi[15]][0]); + var figureMinY = Math.min(coords[pi[0]][1], coords[pi[3]][1], + coords[pi[12]][1], coords[pi[15]][1]); + var figureMaxX = Math.max(coords[pi[0]][0], coords[pi[3]][0], + coords[pi[12]][0], coords[pi[15]][0]); + var figureMaxY = Math.max(coords[pi[0]][1], coords[pi[3]][1], + coords[pi[12]][1], coords[pi[15]][1]); + var splitXBy = Math.ceil((figureMaxX - figureMinX) * TRIANGLE_DENSITY / + (mesh.bounds[2] - mesh.bounds[0])); + splitXBy = Math.max(MIN_SPLIT_PATCH_CHUNKS_AMOUNT, + Math.min(MAX_SPLIT_PATCH_CHUNKS_AMOUNT, splitXBy)); + var splitYBy = Math.ceil((figureMaxY - figureMinY) * TRIANGLE_DENSITY / + (mesh.bounds[3] - mesh.bounds[1])); + splitYBy = Math.max(MIN_SPLIT_PATCH_CHUNKS_AMOUNT, + Math.min(MAX_SPLIT_PATCH_CHUNKS_AMOUNT, splitYBy)); + + var verticesPerRow = splitXBy + 1; + var figureCoords = new Int32Array((splitYBy + 1) * verticesPerRow); + var figureColors = new Int32Array((splitYBy + 1) * verticesPerRow); + var k = 0; + var cl = new Uint8Array(3), cr = new Uint8Array(3); + var c0 = colors[ci[0]], c1 = colors[ci[1]], + c2 = colors[ci[2]], c3 = colors[ci[3]]; + var bRow = getB(splitYBy), bCol = getB(splitXBy); + for (var row = 0; row <= splitYBy; row++) { + cl[0] = ((c0[0] * (splitYBy - row) + c2[0] * row) / splitYBy) | 0; + cl[1] = ((c0[1] * (splitYBy - row) + c2[1] * row) / splitYBy) | 0; + cl[2] = ((c0[2] * (splitYBy - row) + c2[2] * row) / splitYBy) | 0; + + cr[0] = ((c1[0] * (splitYBy - row) + c3[0] * row) / splitYBy) | 0; + cr[1] = ((c1[1] * (splitYBy - row) + c3[1] * row) / splitYBy) | 0; + cr[2] = ((c1[2] * (splitYBy - row) + c3[2] * row) / splitYBy) | 0; + + for (var col = 0; col <= splitXBy; col++, k++) { + if ((row === 0 || row === splitYBy) && + (col === 0 || col === splitXBy)) { + continue; + } + var x = 0, y = 0; + var q = 0; + for (var i = 0; i <= 3; i++) { + for (var j = 0; j <= 3; j++, q++) { + var m = bRow[row][i] * bCol[col][j]; + x += coords[pi[q]][0] * m; + y += coords[pi[q]][1] * m; + } + } + figureCoords[k] = coords.length; + coords.push([x, y]); + figureColors[k] = colors.length; + var newColor = new Uint8Array(3); + newColor[0] = ((cl[0] * (splitXBy - col) + cr[0] * col) / splitXBy) | 0; + newColor[1] = ((cl[1] * (splitXBy - col) + cr[1] * col) / splitXBy) | 0; + newColor[2] = ((cl[2] * (splitXBy - col) + cr[2] * col) / splitXBy) | 0; + colors.push(newColor); + } + } + figureCoords[0] = pi[0]; + figureColors[0] = ci[0]; + figureCoords[splitXBy] = pi[3]; + figureColors[splitXBy] = ci[1]; + figureCoords[verticesPerRow * splitYBy] = pi[12]; + figureColors[verticesPerRow * splitYBy] = ci[2]; + figureCoords[verticesPerRow * splitYBy + splitXBy] = pi[15]; + figureColors[verticesPerRow * splitYBy + splitXBy] = ci[3]; + + mesh.figures[index] = { + type: 'lattice', + coords: figureCoords, + colors: figureColors, + verticesPerRow: verticesPerRow + }; + } + + function decodeType6Shading(mesh, reader) { + // A special case of Type 7. The p11, p12, p21, p22 automatically filled + var coords = mesh.coords; + var colors = mesh.colors; + var ps = new Int32Array(16); // p00, p10, ..., p30, p01, ..., p33 + var cs = new Int32Array(4); // c00, c30, c03, c33 + while (reader.hasData) { + var f = reader.readFlag(); + assert(0 <= f && f <= 3, 'Unknown type6 flag'); + var i, ii; + var pi = coords.length; + for (i = 0, ii = (f !== 0 ? 8 : 12); i < ii; i++) { + coords.push(reader.readCoordinate()); + } + var ci = colors.length; + for (i = 0, ii = (f !== 0 ? 2 : 4); i < ii; i++) { + colors.push(reader.readComponents()); + } + var tmp1, tmp2, tmp3, tmp4; + switch (f) { + case 0: + ps[12] = pi + 3; ps[13] = pi + 4; ps[14] = pi + 5; ps[15] = pi + 6; + ps[ 8] = pi + 2; /* values for 5, 6, 9, 10 are */ ps[11] = pi + 7; + ps[ 4] = pi + 1; /* calculated below */ ps[ 7] = pi + 8; + ps[ 0] = pi; ps[ 1] = pi + 11; ps[ 2] = pi + 10; ps[ 3] = pi + 9; + cs[2] = ci + 1; cs[3] = ci + 2; + cs[0] = ci; cs[1] = ci + 3; + break; + case 1: + tmp1 = ps[12]; tmp2 = ps[13]; tmp3 = ps[14]; tmp4 = ps[15]; + ps[12] = pi + 5; ps[13] = pi + 4; ps[14] = pi + 3; ps[15] = pi + 2; + ps[ 8] = pi + 6; /* values for 5, 6, 9, 10 are */ ps[11] = pi + 1; + ps[ 4] = pi + 7; /* calculated below */ ps[ 7] = pi; + ps[ 0] = tmp1; ps[ 1] = tmp2; ps[ 2] = tmp3; ps[ 3] = tmp4; + tmp1 = cs[2]; tmp2 = cs[3]; + cs[2] = ci + 1; cs[3] = ci; + cs[0] = tmp1; cs[1] = tmp2; + break; + case 2: + ps[12] = ps[15]; ps[13] = pi + 7; ps[14] = pi + 6; ps[15] = pi + 5; + ps[ 8] = ps[11]; /* values for 5, 6, 9, 10 are */ ps[11] = pi + 4; + ps[ 4] = ps[7]; /* calculated below */ ps[ 7] = pi + 3; + ps[ 0] = ps[3]; ps[ 1] = pi; ps[ 2] = pi + 1; ps[ 3] = pi + 2; + cs[2] = cs[3]; cs[3] = ci + 1; + cs[0] = cs[1]; cs[1] = ci; + break; + case 3: + ps[12] = ps[0]; ps[13] = ps[1]; ps[14] = ps[2]; ps[15] = ps[3]; + ps[ 8] = pi; /* values for 5, 6, 9, 10 are */ ps[11] = pi + 7; + ps[ 4] = pi + 1; /* calculated below */ ps[ 7] = pi + 6; + ps[ 0] = pi + 2; ps[ 1] = pi + 3; ps[ 2] = pi + 4; ps[ 3] = pi + 5; + cs[2] = cs[0]; cs[3] = cs[1]; + cs[0] = ci; cs[1] = ci + 1; + break; + } + // set p11, p12, p21, p22 + ps[5] = coords.length; + coords.push([ + (-4 * coords[ps[0]][0] - coords[ps[15]][0] + + 6 * (coords[ps[4]][0] + coords[ps[1]][0]) - + 2 * (coords[ps[12]][0] + coords[ps[3]][0]) + + 3 * (coords[ps[13]][0] + coords[ps[7]][0])) / 9, + (-4 * coords[ps[0]][1] - coords[ps[15]][1] + + 6 * (coords[ps[4]][1] + coords[ps[1]][1]) - + 2 * (coords[ps[12]][1] + coords[ps[3]][1]) + + 3 * (coords[ps[13]][1] + coords[ps[7]][1])) / 9 + ]); + ps[6] = coords.length; + coords.push([ + (-4 * coords[ps[3]][0] - coords[ps[12]][0] + + 6 * (coords[ps[2]][0] + coords[ps[7]][0]) - + 2 * (coords[ps[0]][0] + coords[ps[15]][0]) + + 3 * (coords[ps[4]][0] + coords[ps[14]][0])) / 9, + (-4 * coords[ps[3]][1] - coords[ps[12]][1] + + 6 * (coords[ps[2]][1] + coords[ps[7]][1]) - + 2 * (coords[ps[0]][1] + coords[ps[15]][1]) + + 3 * (coords[ps[4]][1] + coords[ps[14]][1])) / 9 + ]); + ps[9] = coords.length; + coords.push([ + (-4 * coords[ps[12]][0] - coords[ps[3]][0] + + 6 * (coords[ps[8]][0] + coords[ps[13]][0]) - + 2 * (coords[ps[0]][0] + coords[ps[15]][0]) + + 3 * (coords[ps[11]][0] + coords[ps[1]][0])) / 9, + (-4 * coords[ps[12]][1] - coords[ps[3]][1] + + 6 * (coords[ps[8]][1] + coords[ps[13]][1]) - + 2 * (coords[ps[0]][1] + coords[ps[15]][1]) + + 3 * (coords[ps[11]][1] + coords[ps[1]][1])) / 9 + ]); + ps[10] = coords.length; + coords.push([ + (-4 * coords[ps[15]][0] - coords[ps[0]][0] + + 6 * (coords[ps[11]][0] + coords[ps[14]][0]) - + 2 * (coords[ps[12]][0] + coords[ps[3]][0]) + + 3 * (coords[ps[2]][0] + coords[ps[8]][0])) / 9, + (-4 * coords[ps[15]][1] - coords[ps[0]][1] + + 6 * (coords[ps[11]][1] + coords[ps[14]][1]) - + 2 * (coords[ps[12]][1] + coords[ps[3]][1]) + + 3 * (coords[ps[2]][1] + coords[ps[8]][1])) / 9 + ]); + mesh.figures.push({ + type: 'patch', + coords: new Int32Array(ps), // making copies of ps and cs + colors: new Int32Array(cs) + }); + } + } + + function decodeType7Shading(mesh, reader) { + var coords = mesh.coords; + var colors = mesh.colors; + var ps = new Int32Array(16); // p00, p10, ..., p30, p01, ..., p33 + var cs = new Int32Array(4); // c00, c30, c03, c33 + while (reader.hasData) { + var f = reader.readFlag(); + assert(0 <= f && f <= 3, 'Unknown type7 flag'); + var i, ii; + var pi = coords.length; + for (i = 0, ii = (f !== 0 ? 12 : 16); i < ii; i++) { + coords.push(reader.readCoordinate()); + } + var ci = colors.length; + for (i = 0, ii = (f !== 0 ? 2 : 4); i < ii; i++) { + colors.push(reader.readComponents()); + } + var tmp1, tmp2, tmp3, tmp4; + switch (f) { + case 0: + ps[12] = pi + 3; ps[13] = pi + 4; ps[14] = pi + 5; ps[15] = pi + 6; + ps[ 8] = pi + 2; ps[ 9] = pi + 13; ps[10] = pi + 14; ps[11] = pi + 7; + ps[ 4] = pi + 1; ps[ 5] = pi + 12; ps[ 6] = pi + 15; ps[ 7] = pi + 8; + ps[ 0] = pi; ps[ 1] = pi + 11; ps[ 2] = pi + 10; ps[ 3] = pi + 9; + cs[2] = ci + 1; cs[3] = ci + 2; + cs[0] = ci; cs[1] = ci + 3; + break; + case 1: + tmp1 = ps[12]; tmp2 = ps[13]; tmp3 = ps[14]; tmp4 = ps[15]; + ps[12] = pi + 5; ps[13] = pi + 4; ps[14] = pi + 3; ps[15] = pi + 2; + ps[ 8] = pi + 6; ps[ 9] = pi + 11; ps[10] = pi + 10; ps[11] = pi + 1; + ps[ 4] = pi + 7; ps[ 5] = pi + 8; ps[ 6] = pi + 9; ps[ 7] = pi; + ps[ 0] = tmp1; ps[ 1] = tmp2; ps[ 2] = tmp3; ps[ 3] = tmp4; + tmp1 = cs[2]; tmp2 = cs[3]; + cs[2] = ci + 1; cs[3] = ci; + cs[0] = tmp1; cs[1] = tmp2; + break; + case 2: + ps[12] = ps[15]; ps[13] = pi + 7; ps[14] = pi + 6; ps[15] = pi + 5; + ps[ 8] = ps[11]; ps[ 9] = pi + 8; ps[10] = pi + 11; ps[11] = pi + 4; + ps[ 4] = ps[7]; ps[ 5] = pi + 9; ps[ 6] = pi + 10; ps[ 7] = pi + 3; + ps[ 0] = ps[3]; ps[ 1] = pi; ps[ 2] = pi + 1; ps[ 3] = pi + 2; + cs[2] = cs[3]; cs[3] = ci + 1; + cs[0] = cs[1]; cs[1] = ci; + break; + case 3: + ps[12] = ps[0]; ps[13] = ps[1]; ps[14] = ps[2]; ps[15] = ps[3]; + ps[ 8] = pi; ps[ 9] = pi + 9; ps[10] = pi + 8; ps[11] = pi + 7; + ps[ 4] = pi + 1; ps[ 5] = pi + 10; ps[ 6] = pi + 11; ps[ 7] = pi + 6; + ps[ 0] = pi + 2; ps[ 1] = pi + 3; ps[ 2] = pi + 4; ps[ 3] = pi + 5; + cs[2] = cs[0]; cs[3] = cs[1]; + cs[0] = ci; cs[1] = ci + 1; + break; + } + mesh.figures.push({ + type: 'patch', + coords: new Int32Array(ps), // making copies of ps and cs + colors: new Int32Array(cs) + }); + } + } + + function updateBounds(mesh) { + var minX = mesh.coords[0][0], minY = mesh.coords[0][1], + maxX = minX, maxY = minY; + for (var i = 1, ii = mesh.coords.length; i < ii; i++) { + var x = mesh.coords[i][0], y = mesh.coords[i][1]; + minX = minX > x ? x : minX; + minY = minY > y ? y : minY; + maxX = maxX < x ? x : maxX; + maxY = maxY < y ? y : maxY; + } + mesh.bounds = [minX, minY, maxX, maxY]; + } + + function packData(mesh) { + var i, ii, j, jj; + + var coords = mesh.coords; + var coordsPacked = new Float32Array(coords.length * 2); + for (i = 0, j = 0, ii = coords.length; i < ii; i++) { + var xy = coords[i]; + coordsPacked[j++] = xy[0]; + coordsPacked[j++] = xy[1]; + } + mesh.coords = coordsPacked; + + var colors = mesh.colors; + var colorsPacked = new Uint8Array(colors.length * 3); + for (i = 0, j = 0, ii = colors.length; i < ii; i++) { + var c = colors[i]; + colorsPacked[j++] = c[0]; + colorsPacked[j++] = c[1]; + colorsPacked[j++] = c[2]; + } + mesh.colors = colorsPacked; + + var figures = mesh.figures; + for (i = 0, ii = figures.length; i < ii; i++) { + var figure = figures[i], ps = figure.coords, cs = figure.colors; + for (j = 0, jj = ps.length; j < jj; j++) { + ps[j] *= 2; + cs[j] *= 3; + } + } + } + + function Mesh(stream, matrix, xref, res) { + assert(isStream(stream), 'Mesh data is not a stream'); + var dict = stream.dict; + this.matrix = matrix; + this.shadingType = dict.get('ShadingType'); + this.type = 'Pattern'; + this.bbox = dict.get('BBox'); + var cs = dict.get('ColorSpace', 'CS'); + cs = ColorSpace.parse(cs, xref, res); + this.cs = cs; + this.background = dict.has('Background') ? + cs.getRgb(dict.get('Background'), 0) : null; + + var fnObj = dict.get('Function'); + var fn = fnObj ? PDFFunction.parseArray(xref, fnObj) : null; + + this.coords = []; + this.colors = []; + this.figures = []; + + var decodeContext = { + bitsPerCoordinate: dict.get('BitsPerCoordinate'), + bitsPerComponent: dict.get('BitsPerComponent'), + bitsPerFlag: dict.get('BitsPerFlag'), + decode: dict.get('Decode'), + colorFn: fn, + colorSpace: cs, + numComps: fn ? 1 : cs.numComps + }; + var reader = new MeshStreamReader(stream, decodeContext); + + var patchMesh = false; + switch (this.shadingType) { + case PatternType.FREE_FORM_MESH: + decodeType4Shading(this, reader); + break; + case PatternType.LATTICE_FORM_MESH: + var verticesPerRow = dict.get('VerticesPerRow') | 0; + assert(verticesPerRow >= 2, 'Invalid VerticesPerRow'); + decodeType5Shading(this, reader, verticesPerRow); + break; + case PatternType.COONS_PATCH_MESH: + decodeType6Shading(this, reader); + patchMesh = true; + break; + case PatternType.TENSOR_PATCH_MESH: + decodeType7Shading(this, reader); + patchMesh = true; + break; + default: + error('Unsupported mesh type.'); + break; + } + + if (patchMesh) { + // dirty bounds calculation for determining, how dense shall be triangles + updateBounds(this); + for (var i = 0, ii = this.figures.length; i < ii; i++) { + buildFigureFromPatch(this, i); + } + } + // calculate bounds + updateBounds(this); + + packData(this); + } + + Mesh.prototype = { + getIR: function Mesh_getIR() { + return ['Mesh', this.shadingType, this.coords, this.colors, this.figures, + this.bounds, this.matrix, this.bbox, this.background]; + } + }; + + return Mesh; +})(); + +Shadings.Dummy = (function DummyClosure() { + function Dummy() { + this.type = 'Pattern'; + } + + Dummy.prototype = { + getIR: function Dummy_getIR() { + return ['Dummy']; + } + }; + return Dummy; +})(); + +function getTilingPatternIR(operatorList, dict, args) { + var matrix = dict.get('Matrix'); + var bbox = dict.get('BBox'); + var xstep = dict.get('XStep'); + var ystep = dict.get('YStep'); + var paintType = dict.get('PaintType'); + var tilingType = dict.get('TilingType'); + + return [ + 'TilingPattern', args, operatorList, matrix, bbox, xstep, ystep, + paintType, tilingType + ]; +} + + +var PartialEvaluator = (function PartialEvaluatorClosure() { + function PartialEvaluator(pdfManager, xref, handler, pageIndex, + uniquePrefix, idCounters, fontCache) { + this.pdfManager = pdfManager; + this.xref = xref; + this.handler = handler; + this.pageIndex = pageIndex; + this.uniquePrefix = uniquePrefix; + this.idCounters = idCounters; + this.fontCache = fontCache; + } + + // Trying to minimize Date.now() usage and check every 100 time + var TIME_SLOT_DURATION_MS = 20; + var CHECK_TIME_EVERY = 100; + function TimeSlotManager() { + this.reset(); + } + TimeSlotManager.prototype = { + check: function TimeSlotManager_check() { + if (++this.checked < CHECK_TIME_EVERY) { + return false; + } + this.checked = 0; + return this.endTime <= Date.now(); + }, + reset: function TimeSlotManager_reset() { + this.endTime = Date.now() + TIME_SLOT_DURATION_MS; + this.checked = 0; + } + }; + + var deferred = Promise.resolve(); + + var TILING_PATTERN = 1, SHADING_PATTERN = 2; + + PartialEvaluator.prototype = { + hasBlendModes: function PartialEvaluator_hasBlendModes(resources) { + if (!isDict(resources)) { + return false; + } + + var processed = Object.create(null); + if (resources.objId) { + processed[resources.objId] = true; + } + + var nodes = [resources]; + while (nodes.length) { + var key; + var node = nodes.shift(); + // First check the current resources for blend modes. + var graphicStates = node.get('ExtGState'); + if (isDict(graphicStates)) { + graphicStates = graphicStates.getAll(); + for (key in graphicStates) { + var graphicState = graphicStates[key]; + var bm = graphicState['BM']; + if (isName(bm) && bm.name !== 'Normal') { + return true; + } + } + } + // Descend into the XObjects to look for more resources and blend modes. + var xObjects = node.get('XObject'); + if (!isDict(xObjects)) { + continue; + } + xObjects = xObjects.getAll(); + for (key in xObjects) { + var xObject = xObjects[key]; + if (!isStream(xObject)) { + continue; + } + if (xObject.dict.objId) { + if (processed[xObject.dict.objId]) { + // stream has objId and is processed already + continue; + } + processed[xObject.dict.objId] = true; + } + var xResources = xObject.dict.get('Resources'); + // Checking objId to detect an infinite loop. + if (isDict(xResources) && + (!xResources.objId || !processed[xResources.objId])) { + nodes.push(xResources); + if (xResources.objId) { + processed[xResources.objId] = true; + } + } + } + } + return false; + }, + + buildFormXObject: function PartialEvaluator_buildFormXObject(resources, + xobj, smask, + operatorList, + initialState) { + var matrix = xobj.dict.get('Matrix'); + var bbox = xobj.dict.get('BBox'); + var group = xobj.dict.get('Group'); + if (group) { + var groupOptions = { + matrix: matrix, + bbox: bbox, + smask: smask, + isolated: false, + knockout: false + }; + + var groupSubtype = group.get('S'); + var colorSpace; + if (isName(groupSubtype) && groupSubtype.name === 'Transparency') { + groupOptions.isolated = (group.get('I') || false); + groupOptions.knockout = (group.get('K') || false); + colorSpace = (group.has('CS') ? + ColorSpace.parse(group.get('CS'), this.xref, resources) : null); + } + + if (smask && smask.backdrop) { + colorSpace = colorSpace || ColorSpace.singletons.rgb; + smask.backdrop = colorSpace.getRgb(smask.backdrop, 0); + } + + operatorList.addOp(OPS.beginGroup, [groupOptions]); + } + + operatorList.addOp(OPS.paintFormXObjectBegin, [matrix, bbox]); + + return this.getOperatorList(xobj, + (xobj.dict.get('Resources') || resources), operatorList, initialState). + then(function () { + operatorList.addOp(OPS.paintFormXObjectEnd, []); + + if (group) { + operatorList.addOp(OPS.endGroup, [groupOptions]); + } + }); + }, + + buildPaintImageXObject: + function PartialEvaluator_buildPaintImageXObject(resources, image, + inline, operatorList, + cacheKey, imageCache) { + var self = this; + var dict = image.dict; + var w = dict.get('Width', 'W'); + var h = dict.get('Height', 'H'); + + if (!(w && isNum(w)) || !(h && isNum(h))) { + warn('Image dimensions are missing, or not numbers.'); + return; + } + if (PDFJS.maxImageSize !== -1 && w * h > PDFJS.maxImageSize) { + warn('Image exceeded maximum allowed size and was removed.'); + return; + } + + var imageMask = (dict.get('ImageMask', 'IM') || false); + var imgData, args; + if (imageMask) { + // This depends on a tmpCanvas being filled with the + // current fillStyle, such that processing the pixel + // data can't be done here. Instead of creating a + // complete PDFImage, only read the information needed + // for later. + + var width = dict.get('Width', 'W'); + var height = dict.get('Height', 'H'); + var bitStrideLength = (width + 7) >> 3; + var imgArray = image.getBytes(bitStrideLength * height); + var decode = dict.get('Decode', 'D'); + var inverseDecode = (!!decode && decode[0] > 0); + + imgData = PDFImage.createMask(imgArray, width, height, + image instanceof DecodeStream, + inverseDecode); + imgData.cached = true; + args = [imgData]; + operatorList.addOp(OPS.paintImageMaskXObject, args); + if (cacheKey) { + imageCache[cacheKey] = { + fn: OPS.paintImageMaskXObject, + args: args + }; + } + return; + } + + var softMask = (dict.get('SMask', 'SM') || false); + var mask = (dict.get('Mask') || false); + + var SMALL_IMAGE_DIMENSIONS = 200; + // Inlining small images into the queue as RGB data + if (inline && !softMask && !mask && !(image instanceof JpegStream) && + (w + h) < SMALL_IMAGE_DIMENSIONS) { + var imageObj = new PDFImage(this.xref, resources, image, + inline, null, null); + // We force the use of RGBA_32BPP images here, because we can't handle + // any other kind. + imgData = imageObj.createImageData(/* forceRGBA = */ true); + operatorList.addOp(OPS.paintInlineImageXObject, [imgData]); + return; + } + + // If there is no imageMask, create the PDFImage and a lot + // of image processing can be done here. + var uniquePrefix = (this.uniquePrefix || ''); + var objId = 'img_' + uniquePrefix + (++this.idCounters.obj); + operatorList.addDependency(objId); + args = [objId, w, h]; + + if (!softMask && !mask && image instanceof JpegStream && + image.isNativelySupported(this.xref, resources)) { + // These JPEGs don't need any more processing so we can just send it. + operatorList.addOp(OPS.paintJpegXObject, args); + this.handler.send('obj', + [objId, this.pageIndex, 'JpegStream', image.getIR()]); + return; + } + + PDFImage.buildImage(self.handler, self.xref, resources, image, inline). + then(function(imageObj) { + var imgData = imageObj.createImageData(/* forceRGBA = */ false); + self.handler.send('obj', [objId, self.pageIndex, 'Image', imgData], + [imgData.data.buffer]); + }).then(undefined, function (reason) { + warn('Unable to decode image: ' + reason); + self.handler.send('obj', [objId, self.pageIndex, 'Image', null]); + }); + + operatorList.addOp(OPS.paintImageXObject, args); + if (cacheKey) { + imageCache[cacheKey] = { + fn: OPS.paintImageXObject, + args: args + }; + } + }, + + handleSMask: function PartialEvaluator_handleSmask(smask, resources, + operatorList, + stateManager) { + var smaskContent = smask.get('G'); + var smaskOptions = { + subtype: smask.get('S').name, + backdrop: smask.get('BC') + }; + return this.buildFormXObject(resources, smaskContent, smaskOptions, + operatorList, stateManager.state.clone()); + }, + + handleTilingType: + function PartialEvaluator_handleTilingType(fn, args, resources, + pattern, patternDict, + operatorList) { + // Create an IR of the pattern code. + var tilingOpList = new OperatorList(); + return this.getOperatorList(pattern, + (patternDict.get('Resources') || resources), tilingOpList). + then(function () { + // Add the dependencies to the parent operator list so they are + // resolved before sub operator list is executed synchronously. + operatorList.addDependencies(tilingOpList.dependencies); + operatorList.addOp(fn, getTilingPatternIR({ + fnArray: tilingOpList.fnArray, + argsArray: tilingOpList.argsArray + }, patternDict, args)); + }); + }, + + handleSetFont: + function PartialEvaluator_handleSetFont(resources, fontArgs, fontRef, + operatorList, state) { + // TODO(mack): Not needed? + var fontName; + if (fontArgs) { + fontArgs = fontArgs.slice(); + fontName = fontArgs[0].name; + } + + var self = this; + return this.loadFont(fontName, fontRef, this.xref, resources).then( + function (translated) { + if (!translated.font.isType3Font) { + return translated; + } + return translated.loadType3Data(self, resources, operatorList).then( + function () { + return translated; + }); + }).then(function (translated) { + state.font = translated.font; + translated.send(self.handler); + return translated.loadedName; + }); + }, + + handleText: function PartialEvaluator_handleText(chars, state) { + var font = state.font; + var glyphs = font.charsToGlyphs(chars); + var isAddToPathSet = !!(state.textRenderingMode & + TextRenderingMode.ADD_TO_PATH_FLAG); + if (font.data && (isAddToPathSet || PDFJS.disableFontFace)) { + var buildPath = function (fontChar) { + if (!font.renderer.hasBuiltPath(fontChar)) { + var path = font.renderer.getPathJs(fontChar); + this.handler.send('commonobj', [ + font.loadedName + '_path_' + fontChar, + 'FontPath', + path + ]); + } + }.bind(this); + + for (var i = 0, ii = glyphs.length; i < ii; i++) { + var glyph = glyphs[i]; + if (glyph === null) { + continue; + } + buildPath(glyph.fontChar); + + // If the glyph has an accent we need to build a path for its + // fontChar too, otherwise CanvasGraphics_paintChar will fail. + var accent = glyph.accent; + if (accent && accent.fontChar) { + buildPath(accent.fontChar); + } + } + } + + return glyphs; + }, + + setGState: function PartialEvaluator_setGState(resources, gState, + operatorList, xref, + stateManager) { + // This array holds the converted/processed state data. + var gStateObj = []; + var gStateMap = gState.map; + var self = this; + var promise = Promise.resolve(); + for (var key in gStateMap) { + var value = gStateMap[key]; + switch (key) { + case 'Type': + break; + case 'LW': + case 'LC': + case 'LJ': + case 'ML': + case 'D': + case 'RI': + case 'FL': + case 'CA': + case 'ca': + gStateObj.push([key, value]); + break; + case 'Font': + promise = promise.then(function () { + return self.handleSetFont(resources, null, value[0], + operatorList, stateManager.state). + then(function (loadedName) { + operatorList.addDependency(loadedName); + gStateObj.push([key, [loadedName, value[1]]]); + }); + }); + break; + case 'BM': + gStateObj.push([key, value]); + break; + case 'SMask': + if (isName(value) && value.name === 'None') { + gStateObj.push([key, false]); + break; + } + var dict = xref.fetchIfRef(value); + if (isDict(dict)) { + promise = promise.then(function () { + return self.handleSMask(dict, resources, operatorList, + stateManager); + }); + gStateObj.push([key, true]); + } else { + warn('Unsupported SMask type'); + } + + break; + // Only generate info log messages for the following since + // they are unlikely to have a big impact on the rendering. + case 'OP': + case 'op': + case 'OPM': + case 'BG': + case 'BG2': + case 'UCR': + case 'UCR2': + case 'TR': + case 'TR2': + case 'HT': + case 'SM': + case 'SA': + case 'AIS': + case 'TK': + // TODO implement these operators. + info('graphic state operator ' + key); + break; + default: + info('Unknown graphic state operator ' + key); + break; + } + } + return promise.then(function () { + if (gStateObj.length >= 0) { + operatorList.addOp(OPS.setGState, [gStateObj]); + } + }); + }, + + loadFont: function PartialEvaluator_loadFont(fontName, font, xref, + resources) { + + function errorFont() { + return Promise.resolve(new TranslatedFont('g_font_error', + new ErrorFont('Font ' + fontName + ' is not available'), font)); + } + var fontRef; + if (font) { // Loading by ref. + assert(isRef(font)); + fontRef = font; + } else { // Loading by name. + var fontRes = resources.get('Font'); + if (fontRes) { + fontRef = fontRes.getRaw(fontName); + } else { + warn('fontRes not available'); + return errorFont(); + } + } + if (!fontRef) { + warn('fontRef not available'); + return errorFont(); + } + + if (this.fontCache.has(fontRef)) { + return this.fontCache.get(fontRef); + } + + font = xref.fetchIfRef(fontRef); + if (!isDict(font)) { + return errorFont(); + } + + // We are holding font.translated references just for fontRef that are not + // dictionaries (Dict). See explanation below. + if (font.translated) { + return font.translated; + } + + var fontCapability = createPromiseCapability(); + + var preEvaluatedFont = this.preEvaluateFont(font, xref); + var descriptor = preEvaluatedFont.descriptor; + var fontID = fontRef.num + '_' + fontRef.gen; + if (isDict(descriptor)) { + if (!descriptor.fontAliases) { + descriptor.fontAliases = Object.create(null); + } + + var fontAliases = descriptor.fontAliases; + var hash = preEvaluatedFont.hash; + if (fontAliases[hash]) { + var aliasFontRef = fontAliases[hash].aliasRef; + if (aliasFontRef && this.fontCache.has(aliasFontRef)) { + this.fontCache.putAlias(fontRef, aliasFontRef); + return this.fontCache.get(fontRef); + } + } + + if (!fontAliases[hash]) { + fontAliases[hash] = { + fontID: Font.getFontID() + }; + } + + fontAliases[hash].aliasRef = fontRef; + fontID = fontAliases[hash].fontID; + } + + // Workaround for bad PDF generators that don't reference fonts + // properly, i.e. by not using an object identifier. + // Check if the fontRef is a Dict (as opposed to a standard object), + // in which case we don't cache the font and instead reference it by + // fontName in font.loadedName below. + var fontRefIsDict = isDict(fontRef); + if (!fontRefIsDict) { + this.fontCache.put(fontRef, fontCapability.promise); + } + + // Keep track of each font we translated so the caller can + // load them asynchronously before calling display on a page. + font.loadedName = 'g_font_' + (fontRefIsDict ? + fontName.replace(/\W/g, '') : fontID); + + font.translated = fontCapability.promise; + + // TODO move promises into translate font + var translatedPromise; + try { + translatedPromise = Promise.resolve( + this.translateFont(preEvaluatedFont, xref)); + } catch (e) { + translatedPromise = Promise.reject(e); + } + + translatedPromise.then(function (translatedFont) { + if (translatedFont.fontType !== undefined) { + var xrefFontStats = xref.stats.fontTypes; + xrefFontStats[translatedFont.fontType] = true; + } + + fontCapability.resolve(new TranslatedFont(font.loadedName, + translatedFont, font)); + }, function (reason) { + // TODO fontCapability.reject? + UnsupportedManager.notify(UNSUPPORTED_FEATURES.font); + + try { + // error, but it's still nice to have font type reported + var descriptor = preEvaluatedFont.descriptor; + var fontFile3 = descriptor && descriptor.get('FontFile3'); + var subtype = fontFile3 && fontFile3.get('Subtype'); + var fontType = getFontType(preEvaluatedFont.type, + subtype && subtype.name); + var xrefFontStats = xref.stats.fontTypes; + xrefFontStats[fontType] = true; + } catch (ex) { } + + fontCapability.resolve(new TranslatedFont(font.loadedName, + new ErrorFont(reason instanceof Error ? reason.message : reason), + font)); + }); + return fontCapability.promise; + }, + + buildPath: function PartialEvaluator_buildPath(operatorList, fn, args) { + var lastIndex = operatorList.length - 1; + if (!args) { + args = []; + } + if (lastIndex < 0 || + operatorList.fnArray[lastIndex] !== OPS.constructPath) { + operatorList.addOp(OPS.constructPath, [[fn], args]); + } else { + var opArgs = operatorList.argsArray[lastIndex]; + opArgs[0].push(fn); + Array.prototype.push.apply(opArgs[1], args); + } + }, + + handleColorN: function PartialEvaluator_handleColorN(operatorList, fn, args, + cs, patterns, resources, xref) { + // compile tiling patterns + var patternName = args[args.length - 1]; + // SCN/scn applies patterns along with normal colors + var pattern; + if (isName(patternName) && + (pattern = patterns.get(patternName.name))) { + var dict = (isStream(pattern) ? pattern.dict : pattern); + var typeNum = dict.get('PatternType'); + + if (typeNum === TILING_PATTERN) { + var color = cs.base ? cs.base.getRgb(args, 0) : null; + return this.handleTilingType(fn, color, resources, pattern, + dict, operatorList); + } else if (typeNum === SHADING_PATTERN) { + var shading = dict.get('Shading'); + var matrix = dict.get('Matrix'); + pattern = Pattern.parseShading(shading, matrix, xref, resources); + operatorList.addOp(fn, pattern.getIR()); + return Promise.resolve(); + } else { + return Promise.reject('Unknown PatternType: ' + typeNum); + } + } + // TODO shall we fail here? + operatorList.addOp(fn, args); + return Promise.resolve(); + }, + + getOperatorList: function PartialEvaluator_getOperatorList(stream, + resources, + operatorList, + initialState) { + + var self = this; + var xref = this.xref; + var imageCache = {}; + + assert(operatorList); + + resources = (resources || Dict.empty); + var xobjs = (resources.get('XObject') || Dict.empty); + var patterns = (resources.get('Pattern') || Dict.empty); + var stateManager = new StateManager(initialState || new EvalState()); + var preprocessor = new EvaluatorPreprocessor(stream, xref, stateManager); + var timeSlotManager = new TimeSlotManager(); + + return new Promise(function next(resolve, reject) { + timeSlotManager.reset(); + var stop, operation = {}, i, ii, cs; + while (!(stop = timeSlotManager.check())) { + // The arguments parsed by read() are used beyond this loop, so we + // cannot reuse the same array on each iteration. Therefore we pass + // in |null| as the initial value (see the comment on + // EvaluatorPreprocessor_read() for why). + operation.args = null; + if (!(preprocessor.read(operation))) { + break; + } + var args = operation.args; + var fn = operation.fn; + + switch (fn | 0) { + case OPS.paintXObject: + if (args[0].code) { + break; + } + // eagerly compile XForm objects + var name = args[0].name; + if (imageCache[name] !== undefined) { + operatorList.addOp(imageCache[name].fn, imageCache[name].args); + args = null; + continue; + } + + var xobj = xobjs.get(name); + if (xobj) { + assert(isStream(xobj), 'XObject should be a stream'); + + var type = xobj.dict.get('Subtype'); + assert(isName(type), + 'XObject should have a Name subtype'); + + if (type.name === 'Form') { + stateManager.save(); + return self.buildFormXObject(resources, xobj, null, + operatorList, + stateManager.state.clone()). + then(function () { + stateManager.restore(); + next(resolve, reject); + }, reject); + } else if (type.name === 'Image') { + self.buildPaintImageXObject(resources, xobj, false, + operatorList, name, imageCache); + args = null; + continue; + } else if (type.name === 'PS') { + // PostScript XObjects are unused when viewing documents. + // See section 4.7.1 of Adobe's PDF reference. + info('Ignored XObject subtype PS'); + continue; + } else { + error('Unhandled XObject subtype ' + type.name); + } + } + break; + case OPS.setFont: + var fontSize = args[1]; + // eagerly collect all fonts + return self.handleSetFont(resources, args, null, + operatorList, stateManager.state). + then(function (loadedName) { + operatorList.addDependency(loadedName); + operatorList.addOp(OPS.setFont, [loadedName, fontSize]); + next(resolve, reject); + }, reject); + case OPS.endInlineImage: + var cacheKey = args[0].cacheKey; + if (cacheKey) { + var cacheEntry = imageCache[cacheKey]; + if (cacheEntry !== undefined) { + operatorList.addOp(cacheEntry.fn, cacheEntry.args); + args = null; + continue; + } + } + self.buildPaintImageXObject(resources, args[0], true, + operatorList, cacheKey, imageCache); + args = null; + continue; + case OPS.showText: + args[0] = self.handleText(args[0], stateManager.state); + break; + case OPS.showSpacedText: + var arr = args[0]; + var combinedGlyphs = []; + var arrLength = arr.length; + for (i = 0; i < arrLength; ++i) { + var arrItem = arr[i]; + if (isString(arrItem)) { + Array.prototype.push.apply(combinedGlyphs, + self.handleText(arrItem, stateManager.state)); + } else if (isNum(arrItem)) { + combinedGlyphs.push(arrItem); + } + } + args[0] = combinedGlyphs; + fn = OPS.showText; + break; + case OPS.nextLineShowText: + operatorList.addOp(OPS.nextLine); + args[0] = self.handleText(args[0], stateManager.state); + fn = OPS.showText; + break; + case OPS.nextLineSetSpacingShowText: + operatorList.addOp(OPS.nextLine); + operatorList.addOp(OPS.setWordSpacing, [args.shift()]); + operatorList.addOp(OPS.setCharSpacing, [args.shift()]); + args[0] = self.handleText(args[0], stateManager.state); + fn = OPS.showText; + break; + case OPS.setTextRenderingMode: + stateManager.state.textRenderingMode = args[0]; + break; + + case OPS.setFillColorSpace: + stateManager.state.fillColorSpace = + ColorSpace.parse(args[0], xref, resources); + continue; + case OPS.setStrokeColorSpace: + stateManager.state.strokeColorSpace = + ColorSpace.parse(args[0], xref, resources); + continue; + case OPS.setFillColor: + cs = stateManager.state.fillColorSpace; + args = cs.getRgb(args, 0); + fn = OPS.setFillRGBColor; + break; + case OPS.setStrokeColor: + cs = stateManager.state.strokeColorSpace; + args = cs.getRgb(args, 0); + fn = OPS.setStrokeRGBColor; + break; + case OPS.setFillGray: + stateManager.state.fillColorSpace = ColorSpace.singletons.gray; + args = ColorSpace.singletons.gray.getRgb(args, 0); + fn = OPS.setFillRGBColor; + break; + case OPS.setStrokeGray: + stateManager.state.strokeColorSpace = ColorSpace.singletons.gray; + args = ColorSpace.singletons.gray.getRgb(args, 0); + fn = OPS.setStrokeRGBColor; + break; + case OPS.setFillCMYKColor: + stateManager.state.fillColorSpace = ColorSpace.singletons.cmyk; + args = ColorSpace.singletons.cmyk.getRgb(args, 0); + fn = OPS.setFillRGBColor; + break; + case OPS.setStrokeCMYKColor: + stateManager.state.strokeColorSpace = ColorSpace.singletons.cmyk; + args = ColorSpace.singletons.cmyk.getRgb(args, 0); + fn = OPS.setStrokeRGBColor; + break; + case OPS.setFillRGBColor: + stateManager.state.fillColorSpace = ColorSpace.singletons.rgb; + args = ColorSpace.singletons.rgb.getRgb(args, 0); + break; + case OPS.setStrokeRGBColor: + stateManager.state.strokeColorSpace = ColorSpace.singletons.rgb; + args = ColorSpace.singletons.rgb.getRgb(args, 0); + break; + case OPS.setFillColorN: + cs = stateManager.state.fillColorSpace; + if (cs.name === 'Pattern') { + return self.handleColorN(operatorList, OPS.setFillColorN, + args, cs, patterns, resources, xref).then(function() { + next(resolve, reject); + }, reject); + } + args = cs.getRgb(args, 0); + fn = OPS.setFillRGBColor; + break; + case OPS.setStrokeColorN: + cs = stateManager.state.strokeColorSpace; + if (cs.name === 'Pattern') { + return self.handleColorN(operatorList, OPS.setStrokeColorN, + args, cs, patterns, resources, xref).then(function() { + next(resolve, reject); + }, reject); + } + args = cs.getRgb(args, 0); + fn = OPS.setStrokeRGBColor; + break; + + case OPS.shadingFill: + var shadingRes = resources.get('Shading'); + if (!shadingRes) { + error('No shading resource found'); + } + + var shading = shadingRes.get(args[0].name); + if (!shading) { + error('No shading object found'); + } + + var shadingFill = Pattern.parseShading(shading, null, xref, + resources); + var patternIR = shadingFill.getIR(); + args = [patternIR]; + fn = OPS.shadingFill; + break; + case OPS.setGState: + var dictName = args[0]; + var extGState = resources.get('ExtGState'); + + if (!isDict(extGState) || !extGState.has(dictName.name)) { + break; + } + + var gState = extGState.get(dictName.name); + return self.setGState(resources, gState, operatorList, xref, + stateManager).then(function() { + next(resolve, reject); + }, reject); + case OPS.moveTo: + case OPS.lineTo: + case OPS.curveTo: + case OPS.curveTo2: + case OPS.curveTo3: + case OPS.closePath: + self.buildPath(operatorList, fn, args); + continue; + case OPS.rectangle: + self.buildPath(operatorList, fn, args); + continue; + } + operatorList.addOp(fn, args); + } + if (stop) { + deferred.then(function () { + next(resolve, reject); + }); + return; + } + // Some PDFs don't close all restores inside object/form. + // Closing those for them. + for (i = 0, ii = preprocessor.savedStatesDepth; i < ii; i++) { + operatorList.addOp(OPS.restore, []); + } + resolve(); + }); + }, + + getTextContent: function PartialEvaluator_getTextContent(stream, resources, + stateManager) { + + stateManager = (stateManager || new StateManager(new TextState())); + + var textContent = { + items: [], + styles: Object.create(null) + }; + var bidiTexts = textContent.items; + var SPACE_FACTOR = 0.3; + var MULTI_SPACE_FACTOR = 1.5; + + var self = this; + var xref = this.xref; + + resources = (xref.fetchIfRef(resources) || Dict.empty); + + // The xobj is parsed iff it's needed, e.g. if there is a `DO` cmd. + var xobjs = null; + var xobjsCache = {}; + + var preprocessor = new EvaluatorPreprocessor(stream, xref, stateManager); + + var textState; + + function newTextChunk() { + var font = textState.font; + if (!(font.loadedName in textContent.styles)) { + textContent.styles[font.loadedName] = { + fontFamily: font.fallbackName, + ascent: font.ascent, + descent: font.descent, + vertical: font.vertical + }; + } + return { + // |str| is initially an array which we push individual chars to, and + // then runBidi() overwrites it with the final string. + str: [], + dir: null, + width: 0, + height: 0, + transform: null, + fontName: font.loadedName + }; + } + + function runBidi(textChunk) { + var str = textChunk.str.join(''); + var bidiResult = PDFJS.bidi(str, -1, textState.font.vertical); + textChunk.str = bidiResult.str; + textChunk.dir = bidiResult.dir; + return textChunk; + } + + function handleSetFont(fontName, fontRef) { + return self.loadFont(fontName, fontRef, xref, resources). + then(function (translated) { + textState.font = translated.font; + textState.fontMatrix = translated.font.fontMatrix || + FONT_IDENTITY_MATRIX; + }); + } + + function buildTextGeometry(chars, textChunk) { + var font = textState.font; + textChunk = textChunk || newTextChunk(); + if (!textChunk.transform) { + // 9.4.4 Text Space Details + var tsm = [textState.fontSize * textState.textHScale, 0, + 0, textState.fontSize, + 0, textState.textRise]; + var trm = textChunk.transform = Util.transform(textState.ctm, + Util.transform(textState.textMatrix, tsm)); + if (!font.vertical) { + textChunk.height = Math.sqrt(trm[2] * trm[2] + trm[3] * trm[3]); + } else { + textChunk.width = Math.sqrt(trm[0] * trm[0] + trm[1] * trm[1]); + } + } + var width = 0; + var height = 0; + var glyphs = font.charsToGlyphs(chars); + var defaultVMetrics = font.defaultVMetrics; + for (var i = 0; i < glyphs.length; i++) { + var glyph = glyphs[i]; + if (!glyph) { // Previous glyph was a space. + width += textState.wordSpacing * textState.textHScale; + continue; + } + var vMetricX = null; + var vMetricY = null; + var glyphWidth = null; + if (font.vertical) { + if (glyph.vmetric) { + glyphWidth = glyph.vmetric[0]; + vMetricX = glyph.vmetric[1]; + vMetricY = glyph.vmetric[2]; + } else { + glyphWidth = glyph.width; + vMetricX = glyph.width * 0.5; + vMetricY = defaultVMetrics[2]; + } + } else { + glyphWidth = glyph.width; + } + + var glyphUnicode = glyph.unicode; + if (NormalizedUnicodes[glyphUnicode] !== undefined) { + glyphUnicode = NormalizedUnicodes[glyphUnicode]; + } + glyphUnicode = reverseIfRtl(glyphUnicode); + + // The following will calculate the x and y of the individual glyphs. + // if (font.vertical) { + // tsm[4] -= vMetricX * Math.abs(textState.fontSize) * + // textState.fontMatrix[0]; + // tsm[5] -= vMetricY * textState.fontSize * + // textState.fontMatrix[0]; + // } + // var trm = Util.transform(textState.textMatrix, tsm); + // var pt = Util.applyTransform([trm[4], trm[5]], textState.ctm); + // var x = pt[0]; + // var y = pt[1]; + + var tx = 0; + var ty = 0; + if (!font.vertical) { + var w0 = glyphWidth * textState.fontMatrix[0]; + tx = (w0 * textState.fontSize + textState.charSpacing) * + textState.textHScale; + width += tx; + } else { + var w1 = glyphWidth * textState.fontMatrix[0]; + ty = w1 * textState.fontSize + textState.charSpacing; + height += ty; + } + textState.translateTextMatrix(tx, ty); + + textChunk.str.push(glyphUnicode); + } + + var a = textState.textLineMatrix[0]; + var b = textState.textLineMatrix[1]; + var scaleLineX = Math.sqrt(a * a + b * b); + a = textState.ctm[0]; + b = textState.ctm[1]; + var scaleCtmX = Math.sqrt(a * a + b * b); + if (!font.vertical) { + textChunk.width += width * scaleCtmX * scaleLineX; + } else { + textChunk.height += Math.abs(height * scaleCtmX * scaleLineX); + } + return textChunk; + } + + var timeSlotManager = new TimeSlotManager(); + + return new Promise(function next(resolve, reject) { + timeSlotManager.reset(); + var stop, operation = {}, args = []; + while (!(stop = timeSlotManager.check())) { + // The arguments parsed by read() are not used beyond this loop, so + // we can reuse the same array on every iteration, thus avoiding + // unnecessary allocations. + args.length = 0; + operation.args = args; + if (!(preprocessor.read(operation))) { + break; + } + textState = stateManager.state; + var fn = operation.fn; + args = operation.args; + + switch (fn | 0) { + case OPS.setFont: + textState.fontSize = args[1]; + return handleSetFont(args[0].name).then(function() { + next(resolve, reject); + }, reject); + case OPS.setTextRise: + textState.textRise = args[0]; + break; + case OPS.setHScale: + textState.textHScale = args[0] / 100; + break; + case OPS.setLeading: + textState.leading = args[0]; + break; + case OPS.moveText: + textState.translateTextLineMatrix(args[0], args[1]); + textState.textMatrix = textState.textLineMatrix.slice(); + break; + case OPS.setLeadingMoveText: + textState.leading = -args[1]; + textState.translateTextLineMatrix(args[0], args[1]); + textState.textMatrix = textState.textLineMatrix.slice(); + break; + case OPS.nextLine: + textState.carriageReturn(); + break; + case OPS.setTextMatrix: + textState.setTextMatrix(args[0], args[1], args[2], args[3], + args[4], args[5]); + textState.setTextLineMatrix(args[0], args[1], args[2], args[3], + args[4], args[5]); + break; + case OPS.setCharSpacing: + textState.charSpacing = args[0]; + break; + case OPS.setWordSpacing: + textState.wordSpacing = args[0]; + break; + case OPS.beginText: + textState.textMatrix = IDENTITY_MATRIX.slice(); + textState.textLineMatrix = IDENTITY_MATRIX.slice(); + break; + case OPS.showSpacedText: + var items = args[0]; + var textChunk = newTextChunk(); + var offset; + for (var j = 0, jj = items.length; j < jj; j++) { + if (typeof items[j] === 'string') { + buildTextGeometry(items[j], textChunk); + } else { + var val = items[j] / 1000; + if (!textState.font.vertical) { + offset = -val * textState.fontSize * textState.textHScale * + textState.textMatrix[0]; + textState.translateTextMatrix(offset, 0); + textChunk.width += offset; + } else { + offset = -val * textState.fontSize * + textState.textMatrix[3]; + textState.translateTextMatrix(0, offset); + textChunk.height += offset; + } + if (items[j] < 0 && textState.font.spaceWidth > 0) { + var fakeSpaces = -items[j] / textState.font.spaceWidth; + if (fakeSpaces > MULTI_SPACE_FACTOR) { + fakeSpaces = Math.round(fakeSpaces); + while (fakeSpaces--) { + textChunk.str.push(' '); + } + } else if (fakeSpaces > SPACE_FACTOR) { + textChunk.str.push(' '); + } + } + } + } + bidiTexts.push(runBidi(textChunk)); + break; + case OPS.showText: + bidiTexts.push(runBidi(buildTextGeometry(args[0]))); + break; + case OPS.nextLineShowText: + textState.carriageReturn(); + bidiTexts.push(runBidi(buildTextGeometry(args[0]))); + break; + case OPS.nextLineSetSpacingShowText: + textState.wordSpacing = args[0]; + textState.charSpacing = args[1]; + textState.carriageReturn(); + bidiTexts.push(runBidi(buildTextGeometry(args[2]))); + break; + case OPS.paintXObject: + if (args[0].code) { + break; + } + + if (!xobjs) { + xobjs = (resources.get('XObject') || Dict.empty); + } + + var name = args[0].name; + if (xobjsCache.key === name) { + if (xobjsCache.texts) { + Util.appendToArray(bidiTexts, xobjsCache.texts.items); + Util.extendObj(textContent.styles, xobjsCache.texts.styles); + } + break; + } + + var xobj = xobjs.get(name); + if (!xobj) { + break; + } + assert(isStream(xobj), 'XObject should be a stream'); + + var type = xobj.dict.get('Subtype'); + assert(isName(type), + 'XObject should have a Name subtype'); + + if ('Form' !== type.name) { + xobjsCache.key = name; + xobjsCache.texts = null; + break; + } + + stateManager.save(); + var matrix = xobj.dict.get('Matrix'); + if (isArray(matrix) && matrix.length === 6) { + stateManager.transform(matrix); + } + + return self.getTextContent(xobj, + xobj.dict.get('Resources') || resources, stateManager). + then(function (formTextContent) { + Util.appendToArray(bidiTexts, formTextContent.items); + Util.extendObj(textContent.styles, formTextContent.styles); + stateManager.restore(); + + xobjsCache.key = name; + xobjsCache.texts = formTextContent; + + next(resolve, reject); + }, reject); + case OPS.setGState: + var dictName = args[0]; + var extGState = resources.get('ExtGState'); + + if (!isDict(extGState) || !extGState.has(dictName.name)) { + break; + } + + var gsStateMap = extGState.get(dictName.name); + var gsStateFont = null; + for (var key in gsStateMap) { + if (key === 'Font') { + assert(!gsStateFont); + gsStateFont = gsStateMap[key]; + } + } + if (gsStateFont) { + textState.fontSize = gsStateFont[1]; + return handleSetFont(gsStateFont[0]).then(function() { + next(resolve, reject); + }, reject); + } + break; + } // switch + } // while + if (stop) { + deferred.then(function () { + next(resolve, reject); + }); + return; + } + resolve(textContent); + }); + }, + + extractDataStructures: function + partialEvaluatorExtractDataStructures(dict, baseDict, + xref, properties) { + // 9.10.2 + var toUnicode = (dict.get('ToUnicode') || baseDict.get('ToUnicode')); + if (toUnicode) { + properties.toUnicode = this.readToUnicode(toUnicode); + } + if (properties.composite) { + // CIDSystemInfo helps to match CID to glyphs + var cidSystemInfo = dict.get('CIDSystemInfo'); + if (isDict(cidSystemInfo)) { + properties.cidSystemInfo = { + registry: cidSystemInfo.get('Registry'), + ordering: cidSystemInfo.get('Ordering'), + supplement: cidSystemInfo.get('Supplement') + }; + } + + var cidToGidMap = dict.get('CIDToGIDMap'); + if (isStream(cidToGidMap)) { + properties.cidToGidMap = this.readCidToGidMap(cidToGidMap); + } + } + + // Based on 9.6.6 of the spec the encoding can come from multiple places + // and depends on the font type. The base encoding and differences are + // read here, but the encoding that is actually used is chosen during + // glyph mapping in the font. + // TODO: Loading the built in encoding in the font would allow the + // differences to be merged in here not require us to hold on to it. + var differences = []; + var baseEncodingName = null; + var encoding; + if (dict.has('Encoding')) { + encoding = dict.get('Encoding'); + if (isDict(encoding)) { + baseEncodingName = encoding.get('BaseEncoding'); + baseEncodingName = (isName(baseEncodingName) ? + baseEncodingName.name : null); + // Load the differences between the base and original + if (encoding.has('Differences')) { + var diffEncoding = encoding.get('Differences'); + var index = 0; + for (var j = 0, jj = diffEncoding.length; j < jj; j++) { + var data = diffEncoding[j]; + if (isNum(data)) { + index = data; + } else { + differences[index++] = data.name; + } + } + } + } else if (isName(encoding)) { + baseEncodingName = encoding.name; + } else { + error('Encoding is not a Name nor a Dict'); + } + // According to table 114 if the encoding is a named encoding it must be + // one of these predefined encodings. + if ((baseEncodingName !== 'MacRomanEncoding' && + baseEncodingName !== 'MacExpertEncoding' && + baseEncodingName !== 'WinAnsiEncoding')) { + baseEncodingName = null; + } + } + + if (baseEncodingName) { + properties.defaultEncoding = Encodings[baseEncodingName].slice(); + } else { + encoding = (properties.type === 'TrueType' ? + Encodings.WinAnsiEncoding : Encodings.StandardEncoding); + // The Symbolic attribute can be misused for regular fonts + // Heuristic: we have to check if the font is a standard one also + if (!!(properties.flags & FontFlags.Symbolic)) { + encoding = Encodings.MacRomanEncoding; + if (!properties.file) { + if (/Symbol/i.test(properties.name)) { + encoding = Encodings.SymbolSetEncoding; + } else if (/Dingbats/i.test(properties.name)) { + encoding = Encodings.ZapfDingbatsEncoding; + } + } + } + properties.defaultEncoding = encoding; + } + + properties.differences = differences; + properties.baseEncodingName = baseEncodingName; + properties.dict = dict; + }, + + readToUnicode: function PartialEvaluator_readToUnicode(toUnicode) { + var cmap, cmapObj = toUnicode; + if (isName(cmapObj)) { + cmap = CMapFactory.create(cmapObj, + { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null); + if (cmap instanceof IdentityCMap) { + return new IdentityToUnicodeMap(0, 0xFFFF); + } + return new ToUnicodeMap(cmap.getMap()); + } else if (isStream(cmapObj)) { + cmap = CMapFactory.create(cmapObj, + { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null); + if (cmap instanceof IdentityCMap) { + return new IdentityToUnicodeMap(0, 0xFFFF); + } + cmap = cmap.getMap(); + // Convert UTF-16BE + // NOTE: cmap can be a sparse array, so use forEach instead of for(;;) + // to iterate over all keys. + cmap.forEach(function(token, i) { + var str = []; + for (var k = 0; k < token.length; k += 2) { + var w1 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1); + if ((w1 & 0xF800) !== 0xD800) { // w1 < 0xD800 || w1 > 0xDFFF + str.push(w1); + continue; + } + k += 2; + var w2 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1); + str.push(((w1 & 0x3ff) << 10) + (w2 & 0x3ff) + 0x10000); + } + cmap[i] = String.fromCharCode.apply(String, str); + }); + return new ToUnicodeMap(cmap); + } + return null; + }, + + readCidToGidMap: function PartialEvaluator_readCidToGidMap(cidToGidStream) { + // Extract the encoding from the CIDToGIDMap + var glyphsData = cidToGidStream.getBytes(); + + // Set encoding 0 to later verify the font has an encoding + var result = []; + for (var j = 0, jj = glyphsData.length; j < jj; j++) { + var glyphID = (glyphsData[j++] << 8) | glyphsData[j]; + if (glyphID === 0) { + continue; + } + var code = j >> 1; + result[code] = glyphID; + } + return result; + }, + + extractWidths: function PartialEvaluator_extractWidths(dict, xref, + descriptor, + properties) { + var glyphsWidths = []; + var defaultWidth = 0; + var glyphsVMetrics = []; + var defaultVMetrics; + var i, ii, j, jj, start, code, widths; + if (properties.composite) { + defaultWidth = dict.get('DW') || 1000; + + widths = dict.get('W'); + if (widths) { + for (i = 0, ii = widths.length; i < ii; i++) { + start = widths[i++]; + code = xref.fetchIfRef(widths[i]); + if (isArray(code)) { + for (j = 0, jj = code.length; j < jj; j++) { + glyphsWidths[start++] = code[j]; + } + } else { + var width = widths[++i]; + for (j = start; j <= code; j++) { + glyphsWidths[j] = width; + } + } + } + } + + if (properties.vertical) { + var vmetrics = (dict.get('DW2') || [880, -1000]); + defaultVMetrics = [vmetrics[1], defaultWidth * 0.5, vmetrics[0]]; + vmetrics = dict.get('W2'); + if (vmetrics) { + for (i = 0, ii = vmetrics.length; i < ii; i++) { + start = vmetrics[i++]; + code = xref.fetchIfRef(vmetrics[i]); + if (isArray(code)) { + for (j = 0, jj = code.length; j < jj; j++) { + glyphsVMetrics[start++] = [code[j++], code[j++], code[j]]; + } + } else { + var vmetric = [vmetrics[++i], vmetrics[++i], vmetrics[++i]]; + for (j = start; j <= code; j++) { + glyphsVMetrics[j] = vmetric; + } + } + } + } + } + } else { + var firstChar = properties.firstChar; + widths = dict.get('Widths'); + if (widths) { + j = firstChar; + for (i = 0, ii = widths.length; i < ii; i++) { + glyphsWidths[j++] = widths[i]; + } + defaultWidth = (parseFloat(descriptor.get('MissingWidth')) || 0); + } else { + // Trying get the BaseFont metrics (see comment above). + var baseFontName = dict.get('BaseFont'); + if (isName(baseFontName)) { + var metrics = this.getBaseFontMetrics(baseFontName.name); + + glyphsWidths = this.buildCharCodeToWidth(metrics.widths, + properties); + defaultWidth = metrics.defaultWidth; + } + } + } + + // Heuristic: detection of monospace font by checking all non-zero widths + var isMonospace = true; + var firstWidth = defaultWidth; + for (var glyph in glyphsWidths) { + var glyphWidth = glyphsWidths[glyph]; + if (!glyphWidth) { + continue; + } + if (!firstWidth) { + firstWidth = glyphWidth; + continue; + } + if (firstWidth !== glyphWidth) { + isMonospace = false; + break; + } + } + if (isMonospace) { + properties.flags |= FontFlags.FixedPitch; + } + + properties.defaultWidth = defaultWidth; + properties.widths = glyphsWidths; + properties.defaultVMetrics = defaultVMetrics; + properties.vmetrics = glyphsVMetrics; + }, + + isSerifFont: function PartialEvaluator_isSerifFont(baseFontName) { + // Simulating descriptor flags attribute + var fontNameWoStyle = baseFontName.split('-')[0]; + return (fontNameWoStyle in serifFonts) || + (fontNameWoStyle.search(/serif/gi) !== -1); + }, + + getBaseFontMetrics: function PartialEvaluator_getBaseFontMetrics(name) { + var defaultWidth = 0; + var widths = []; + var monospace = false; + var lookupName = (stdFontMap[name] || name); + + if (!(lookupName in Metrics)) { + // Use default fonts for looking up font metrics if the passed + // font is not a base font + if (this.isSerifFont(name)) { + lookupName = 'Times-Roman'; + } else { + lookupName = 'Helvetica'; + } + } + var glyphWidths = Metrics[lookupName]; + + if (isNum(glyphWidths)) { + defaultWidth = glyphWidths; + monospace = true; + } else { + widths = glyphWidths; + } + + return { + defaultWidth: defaultWidth, + monospace: monospace, + widths: widths + }; + }, + + buildCharCodeToWidth: + function PartialEvaluator_bulildCharCodeToWidth(widthsByGlyphName, + properties) { + var widths = Object.create(null); + var differences = properties.differences; + var encoding = properties.defaultEncoding; + for (var charCode = 0; charCode < 256; charCode++) { + if (charCode in differences && + widthsByGlyphName[differences[charCode]]) { + widths[charCode] = widthsByGlyphName[differences[charCode]]; + continue; + } + if (charCode in encoding && widthsByGlyphName[encoding[charCode]]) { + widths[charCode] = widthsByGlyphName[encoding[charCode]]; + continue; + } + } + return widths; + }, + + preEvaluateFont: function PartialEvaluator_preEvaluateFont(dict, xref) { + var baseDict = dict; + var type = dict.get('Subtype'); + assert(isName(type), 'invalid font Subtype'); + + var composite = false; + var uint8array; + if (type.name === 'Type0') { + // If font is a composite + // - get the descendant font + // - set the type according to the descendant font + // - get the FontDescriptor from the descendant font + var df = dict.get('DescendantFonts'); + if (!df) { + error('Descendant fonts are not specified'); + } + dict = (isArray(df) ? xref.fetchIfRef(df[0]) : df); + + type = dict.get('Subtype'); + assert(isName(type), 'invalid font Subtype'); + composite = true; + } + + var descriptor = dict.get('FontDescriptor'); + if (descriptor) { + var hash = new MurmurHash3_64(); + var encoding = baseDict.getRaw('Encoding'); + if (isName(encoding)) { + hash.update(encoding.name); + } else if (isRef(encoding)) { + hash.update(encoding.num + '_' + encoding.gen); + } else if (isDict(encoding)) { + var keys = encoding.getKeys(); + for (var i = 0, ii = keys.length; i < ii; i++) { + var entry = encoding.getRaw(keys[i]); + if (isName(entry)) { + hash.update(entry.name); + } else if (isRef(entry)) { + hash.update(entry.num + '_' + entry.gen); + } else if (isArray(entry)) { // 'Differences' entry. + // Ideally we should check the contents of the array, but to avoid + // parsing it here and then again in |extractDataStructures|, + // we only use the array length for now (fixes bug1157493.pdf). + hash.update(entry.length.toString()); + } + } + } + + var toUnicode = dict.get('ToUnicode') || baseDict.get('ToUnicode'); + if (isStream(toUnicode)) { + var stream = toUnicode.str || toUnicode; + uint8array = stream.buffer ? + new Uint8Array(stream.buffer.buffer, 0, stream.bufferLength) : + new Uint8Array(stream.bytes.buffer, + stream.start, stream.end - stream.start); + hash.update(uint8array); + + } else if (isName(toUnicode)) { + hash.update(toUnicode.name); + } + + var widths = dict.get('Widths') || baseDict.get('Widths'); + if (widths) { + uint8array = new Uint8Array(new Uint32Array(widths).buffer); + hash.update(uint8array); + } + } + + return { + descriptor: descriptor, + dict: dict, + baseDict: baseDict, + composite: composite, + type: type.name, + hash: hash ? hash.hexdigest() : '' + }; + }, + + translateFont: function PartialEvaluator_translateFont(preEvaluatedFont, + xref) { + var baseDict = preEvaluatedFont.baseDict; + var dict = preEvaluatedFont.dict; + var composite = preEvaluatedFont.composite; + var descriptor = preEvaluatedFont.descriptor; + var type = preEvaluatedFont.type; + var maxCharIndex = (composite ? 0xFFFF : 0xFF); + var properties; + + if (!descriptor) { + if (type === 'Type3') { + // FontDescriptor is only required for Type3 fonts when the document + // is a tagged pdf. Create a barbebones one to get by. + descriptor = new Dict(null); + descriptor.set('FontName', Name.get(type)); + } else { + // Before PDF 1.5 if the font was one of the base 14 fonts, having a + // FontDescriptor was not required. + // This case is here for compatibility. + var baseFontName = dict.get('BaseFont'); + if (!isName(baseFontName)) { + error('Base font is not specified'); + } + + // Using base font name as a font name. + baseFontName = baseFontName.name.replace(/[,_]/g, '-'); + var metrics = this.getBaseFontMetrics(baseFontName); + + // Simulating descriptor flags attribute + var fontNameWoStyle = baseFontName.split('-')[0]; + var flags = + (this.isSerifFont(fontNameWoStyle) ? FontFlags.Serif : 0) | + (metrics.monospace ? FontFlags.FixedPitch : 0) | + (symbolsFonts[fontNameWoStyle] ? FontFlags.Symbolic : + FontFlags.Nonsymbolic); + + properties = { + type: type, + name: baseFontName, + widths: metrics.widths, + defaultWidth: metrics.defaultWidth, + flags: flags, + firstChar: 0, + lastChar: maxCharIndex + }; + this.extractDataStructures(dict, dict, xref, properties); + properties.widths = this.buildCharCodeToWidth(metrics.widths, + properties); + return new Font(baseFontName, null, properties); + } + } + + // According to the spec if 'FontDescriptor' is declared, 'FirstChar', + // 'LastChar' and 'Widths' should exist too, but some PDF encoders seem + // to ignore this rule when a variant of a standart font is used. + // TODO Fill the width array depending on which of the base font this is + // a variant. + var firstChar = (dict.get('FirstChar') || 0); + var lastChar = (dict.get('LastChar') || maxCharIndex); + + var fontName = descriptor.get('FontName'); + var baseFont = dict.get('BaseFont'); + // Some bad PDFs have a string as the font name. + if (isString(fontName)) { + fontName = Name.get(fontName); + } + if (isString(baseFont)) { + baseFont = Name.get(baseFont); + } + + if (type !== 'Type3') { + var fontNameStr = fontName && fontName.name; + var baseFontStr = baseFont && baseFont.name; + if (fontNameStr !== baseFontStr) { + info('The FontDescriptor\'s FontName is "' + fontNameStr + + '" but should be the same as the Font\'s BaseFont "' + + baseFontStr + '"'); + // Workaround for cases where e.g. fontNameStr = 'Arial' and + // baseFontStr = 'Arial,Bold' (needed when no font file is embedded). + if (fontNameStr && baseFontStr && + baseFontStr.indexOf(fontNameStr) === 0) { + fontName = baseFont; + } + } + } + fontName = (fontName || baseFont); + + assert(isName(fontName), 'invalid font name'); + + var fontFile = descriptor.get('FontFile', 'FontFile2', 'FontFile3'); + if (fontFile) { + if (fontFile.dict) { + var subtype = fontFile.dict.get('Subtype'); + if (subtype) { + subtype = subtype.name; + } + var length1 = fontFile.dict.get('Length1'); + var length2 = fontFile.dict.get('Length2'); + } + } + + properties = { + type: type, + name: fontName.name, + subtype: subtype, + file: fontFile, + length1: length1, + length2: length2, + loadedName: baseDict.loadedName, + composite: composite, + wideChars: composite, + fixedPitch: false, + fontMatrix: (dict.get('FontMatrix') || FONT_IDENTITY_MATRIX), + firstChar: firstChar || 0, + lastChar: (lastChar || maxCharIndex), + bbox: descriptor.get('FontBBox'), + ascent: descriptor.get('Ascent'), + descent: descriptor.get('Descent'), + xHeight: descriptor.get('XHeight'), + capHeight: descriptor.get('CapHeight'), + flags: descriptor.get('Flags'), + italicAngle: descriptor.get('ItalicAngle'), + coded: false + }; + + if (composite) { + var cidEncoding = baseDict.get('Encoding'); + if (isName(cidEncoding)) { + properties.cidEncoding = cidEncoding.name; + } + properties.cMap = CMapFactory.create(cidEncoding, + { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null); + properties.vertical = properties.cMap.vertical; + } + this.extractDataStructures(dict, baseDict, xref, properties); + this.extractWidths(dict, xref, descriptor, properties); + + if (type === 'Type3') { + properties.isType3Font = true; + } + + return new Font(fontName.name, fontFile, properties); + } + }; + + return PartialEvaluator; +})(); + +var TranslatedFont = (function TranslatedFontClosure() { + function TranslatedFont(loadedName, font, dict) { + this.loadedName = loadedName; + this.font = font; + this.dict = dict; + this.type3Loaded = null; + this.sent = false; + } + TranslatedFont.prototype = { + send: function (handler) { + if (this.sent) { + return; + } + var fontData = this.font.exportData(); + handler.send('commonobj', [ + this.loadedName, + 'Font', + fontData + ]); + this.sent = true; + }, + loadType3Data: function (evaluator, resources, parentOperatorList) { + assert(this.font.isType3Font); + + if (this.type3Loaded) { + return this.type3Loaded; + } + + var translatedFont = this.font; + var loadCharProcsPromise = Promise.resolve(); + var charProcs = this.dict.get('CharProcs').getAll(); + var fontResources = this.dict.get('Resources') || resources; + var charProcKeys = Object.keys(charProcs); + var charProcOperatorList = {}; + for (var i = 0, n = charProcKeys.length; i < n; ++i) { + loadCharProcsPromise = loadCharProcsPromise.then(function (key) { + var glyphStream = charProcs[key]; + var operatorList = new OperatorList(); + return evaluator.getOperatorList(glyphStream, fontResources, + operatorList).then(function () { + charProcOperatorList[key] = operatorList.getIR(); + + // Add the dependencies to the parent operator list so they are + // resolved before sub operator list is executed synchronously. + parentOperatorList.addDependencies(operatorList.dependencies); + }, function (reason) { + warn('Type3 font resource \"' + key + '\" is not available'); + var operatorList = new OperatorList(); + charProcOperatorList[key] = operatorList.getIR(); + }); + }.bind(this, charProcKeys[i])); + } + this.type3Loaded = loadCharProcsPromise.then(function () { + translatedFont.charProcOperatorList = charProcOperatorList; + }); + return this.type3Loaded; + } + }; + return TranslatedFont; +})(); + +var OperatorList = (function OperatorListClosure() { + var CHUNK_SIZE = 1000; + var CHUNK_SIZE_ABOUT = CHUNK_SIZE - 5; // close to chunk size + + function getTransfers(queue) { + var transfers = []; + var fnArray = queue.fnArray, argsArray = queue.argsArray; + for (var i = 0, ii = queue.length; i < ii; i++) { + switch (fnArray[i]) { + case OPS.paintInlineImageXObject: + case OPS.paintInlineImageXObjectGroup: + case OPS.paintImageMaskXObject: + var arg = argsArray[i][0]; // first param in imgData + if (!arg.cached) { + transfers.push(arg.data.buffer); + } + break; + } + } + return transfers; + } + + function OperatorList(intent, messageHandler, pageIndex) { + this.messageHandler = messageHandler; + this.fnArray = []; + this.argsArray = []; + this.dependencies = {}; + this.pageIndex = pageIndex; + this.intent = intent; + } + + OperatorList.prototype = { + get length() { + return this.argsArray.length; + }, + + addOp: function(fn, args) { + this.fnArray.push(fn); + this.argsArray.push(args); + if (this.messageHandler) { + if (this.fnArray.length >= CHUNK_SIZE) { + this.flush(); + } else if (this.fnArray.length >= CHUNK_SIZE_ABOUT && + (fn === OPS.restore || fn === OPS.endText)) { + // heuristic to flush on boundary of restore or endText + this.flush(); + } + } + }, + + addDependency: function(dependency) { + if (dependency in this.dependencies) { + return; + } + this.dependencies[dependency] = true; + this.addOp(OPS.dependency, [dependency]); + }, + + addDependencies: function(dependencies) { + for (var key in dependencies) { + this.addDependency(key); + } + }, + + addOpList: function(opList) { + Util.extendObj(this.dependencies, opList.dependencies); + for (var i = 0, ii = opList.length; i < ii; i++) { + this.addOp(opList.fnArray[i], opList.argsArray[i]); + } + }, + + getIR: function() { + return { + fnArray: this.fnArray, + argsArray: this.argsArray, + length: this.length + }; + }, + + flush: function(lastChunk) { + if (this.intent !== 'oplist') { + new QueueOptimizer().optimize(this); + } + var transfers = getTransfers(this); + this.messageHandler.send('RenderPageChunk', { + operatorList: { + fnArray: this.fnArray, + argsArray: this.argsArray, + lastChunk: lastChunk, + length: this.length + }, + pageIndex: this.pageIndex, + intent: this.intent + }, transfers); + this.dependencies = {}; + this.fnArray.length = 0; + this.argsArray.length = 0; + } + }; + + return OperatorList; +})(); + +var StateManager = (function StateManagerClosure() { + function StateManager(initialState) { + this.state = initialState; + this.stateStack = []; + } + StateManager.prototype = { + save: function () { + var old = this.state; + this.stateStack.push(this.state); + this.state = old.clone(); + }, + restore: function () { + var prev = this.stateStack.pop(); + if (prev) { + this.state = prev; + } + }, + transform: function (args) { + this.state.ctm = Util.transform(this.state.ctm, args); + } + }; + return StateManager; +})(); + +var TextState = (function TextStateClosure() { + function TextState() { + this.ctm = new Float32Array(IDENTITY_MATRIX); + this.fontSize = 0; + this.font = null; + this.fontMatrix = FONT_IDENTITY_MATRIX; + this.textMatrix = IDENTITY_MATRIX.slice(); + this.textLineMatrix = IDENTITY_MATRIX.slice(); + this.charSpacing = 0; + this.wordSpacing = 0; + this.leading = 0; + this.textHScale = 1; + this.textRise = 0; + } + + TextState.prototype = { + setTextMatrix: function TextState_setTextMatrix(a, b, c, d, e, f) { + var m = this.textMatrix; + m[0] = a; m[1] = b; m[2] = c; m[3] = d; m[4] = e; m[5] = f; + }, + setTextLineMatrix: function TextState_setTextMatrix(a, b, c, d, e, f) { + var m = this.textLineMatrix; + m[0] = a; m[1] = b; m[2] = c; m[3] = d; m[4] = e; m[5] = f; + }, + translateTextMatrix: function TextState_translateTextMatrix(x, y) { + var m = this.textMatrix; + m[4] = m[0] * x + m[2] * y + m[4]; + m[5] = m[1] * x + m[3] * y + m[5]; + }, + translateTextLineMatrix: function TextState_translateTextMatrix(x, y) { + var m = this.textLineMatrix; + m[4] = m[0] * x + m[2] * y + m[4]; + m[5] = m[1] * x + m[3] * y + m[5]; + }, + calcRenderMatrix: function TextState_calcRendeMatrix(ctm) { + // 9.4.4 Text Space Details + var tsm = [this.fontSize * this.textHScale, 0, + 0, this.fontSize, + 0, this.textRise]; + return Util.transform(ctm, Util.transform(this.textMatrix, tsm)); + }, + carriageReturn: function TextState_carriageReturn() { + this.translateTextLineMatrix(0, -this.leading); + this.textMatrix = this.textLineMatrix.slice(); + }, + clone: function TextState_clone() { + var clone = Object.create(this); + clone.textMatrix = this.textMatrix.slice(); + clone.textLineMatrix = this.textLineMatrix.slice(); + clone.fontMatrix = this.fontMatrix.slice(); + return clone; + } + }; + return TextState; +})(); + +var EvalState = (function EvalStateClosure() { + function EvalState() { + this.ctm = new Float32Array(IDENTITY_MATRIX); + this.font = null; + this.textRenderingMode = TextRenderingMode.FILL; + this.fillColorSpace = ColorSpace.singletons.gray; + this.strokeColorSpace = ColorSpace.singletons.gray; + } + EvalState.prototype = { + clone: function CanvasExtraState_clone() { + return Object.create(this); + }, + }; + return EvalState; +})(); + +var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() { + // Specifies properties for each command + // + // If variableArgs === true: [0, `numArgs`] expected + // If variableArgs === false: exactly `numArgs` expected + var OP_MAP = { + // Graphic state + w: { id: OPS.setLineWidth, numArgs: 1, variableArgs: false }, + J: { id: OPS.setLineCap, numArgs: 1, variableArgs: false }, + j: { id: OPS.setLineJoin, numArgs: 1, variableArgs: false }, + M: { id: OPS.setMiterLimit, numArgs: 1, variableArgs: false }, + d: { id: OPS.setDash, numArgs: 2, variableArgs: false }, + ri: { id: OPS.setRenderingIntent, numArgs: 1, variableArgs: false }, + i: { id: OPS.setFlatness, numArgs: 1, variableArgs: false }, + gs: { id: OPS.setGState, numArgs: 1, variableArgs: false }, + q: { id: OPS.save, numArgs: 0, variableArgs: false }, + Q: { id: OPS.restore, numArgs: 0, variableArgs: false }, + cm: { id: OPS.transform, numArgs: 6, variableArgs: false }, + + // Path + m: { id: OPS.moveTo, numArgs: 2, variableArgs: false }, + l: { id: OPS.lineTo, numArgs: 2, variableArgs: false }, + c: { id: OPS.curveTo, numArgs: 6, variableArgs: false }, + v: { id: OPS.curveTo2, numArgs: 4, variableArgs: false }, + y: { id: OPS.curveTo3, numArgs: 4, variableArgs: false }, + h: { id: OPS.closePath, numArgs: 0, variableArgs: false }, + re: { id: OPS.rectangle, numArgs: 4, variableArgs: false }, + S: { id: OPS.stroke, numArgs: 0, variableArgs: false }, + s: { id: OPS.closeStroke, numArgs: 0, variableArgs: false }, + f: { id: OPS.fill, numArgs: 0, variableArgs: false }, + F: { id: OPS.fill, numArgs: 0, variableArgs: false }, + 'f*': { id: OPS.eoFill, numArgs: 0, variableArgs: false }, + B: { id: OPS.fillStroke, numArgs: 0, variableArgs: false }, + 'B*': { id: OPS.eoFillStroke, numArgs: 0, variableArgs: false }, + b: { id: OPS.closeFillStroke, numArgs: 0, variableArgs: false }, + 'b*': { id: OPS.closeEOFillStroke, numArgs: 0, variableArgs: false }, + n: { id: OPS.endPath, numArgs: 0, variableArgs: false }, + + // Clipping + W: { id: OPS.clip, numArgs: 0, variableArgs: false }, + 'W*': { id: OPS.eoClip, numArgs: 0, variableArgs: false }, + + // Text + BT: { id: OPS.beginText, numArgs: 0, variableArgs: false }, + ET: { id: OPS.endText, numArgs: 0, variableArgs: false }, + Tc: { id: OPS.setCharSpacing, numArgs: 1, variableArgs: false }, + Tw: { id: OPS.setWordSpacing, numArgs: 1, variableArgs: false }, + Tz: { id: OPS.setHScale, numArgs: 1, variableArgs: false }, + TL: { id: OPS.setLeading, numArgs: 1, variableArgs: false }, + Tf: { id: OPS.setFont, numArgs: 2, variableArgs: false }, + Tr: { id: OPS.setTextRenderingMode, numArgs: 1, variableArgs: false }, + Ts: { id: OPS.setTextRise, numArgs: 1, variableArgs: false }, + Td: { id: OPS.moveText, numArgs: 2, variableArgs: false }, + TD: { id: OPS.setLeadingMoveText, numArgs: 2, variableArgs: false }, + Tm: { id: OPS.setTextMatrix, numArgs: 6, variableArgs: false }, + 'T*': { id: OPS.nextLine, numArgs: 0, variableArgs: false }, + Tj: { id: OPS.showText, numArgs: 1, variableArgs: false }, + TJ: { id: OPS.showSpacedText, numArgs: 1, variableArgs: false }, + '\'': { id: OPS.nextLineShowText, numArgs: 1, variableArgs: false }, + '"': { id: OPS.nextLineSetSpacingShowText, numArgs: 3, + variableArgs: false }, + + // Type3 fonts + d0: { id: OPS.setCharWidth, numArgs: 2, variableArgs: false }, + d1: { id: OPS.setCharWidthAndBounds, numArgs: 6, variableArgs: false }, + + // Color + CS: { id: OPS.setStrokeColorSpace, numArgs: 1, variableArgs: false }, + cs: { id: OPS.setFillColorSpace, numArgs: 1, variableArgs: false }, + SC: { id: OPS.setStrokeColor, numArgs: 4, variableArgs: true }, + SCN: { id: OPS.setStrokeColorN, numArgs: 33, variableArgs: true }, + sc: { id: OPS.setFillColor, numArgs: 4, variableArgs: true }, + scn: { id: OPS.setFillColorN, numArgs: 33, variableArgs: true }, + G: { id: OPS.setStrokeGray, numArgs: 1, variableArgs: false }, + g: { id: OPS.setFillGray, numArgs: 1, variableArgs: false }, + RG: { id: OPS.setStrokeRGBColor, numArgs: 3, variableArgs: false }, + rg: { id: OPS.setFillRGBColor, numArgs: 3, variableArgs: false }, + K: { id: OPS.setStrokeCMYKColor, numArgs: 4, variableArgs: false }, + k: { id: OPS.setFillCMYKColor, numArgs: 4, variableArgs: false }, + + // Shading + sh: { id: OPS.shadingFill, numArgs: 1, variableArgs: false }, + + // Images + BI: { id: OPS.beginInlineImage, numArgs: 0, variableArgs: false }, + ID: { id: OPS.beginImageData, numArgs: 0, variableArgs: false }, + EI: { id: OPS.endInlineImage, numArgs: 1, variableArgs: false }, + + // XObjects + Do: { id: OPS.paintXObject, numArgs: 1, variableArgs: false }, + MP: { id: OPS.markPoint, numArgs: 1, variableArgs: false }, + DP: { id: OPS.markPointProps, numArgs: 2, variableArgs: false }, + BMC: { id: OPS.beginMarkedContent, numArgs: 1, variableArgs: false }, + BDC: { id: OPS.beginMarkedContentProps, numArgs: 2, + variableArgs: false }, + EMC: { id: OPS.endMarkedContent, numArgs: 0, variableArgs: false }, + + // Compatibility + BX: { id: OPS.beginCompat, numArgs: 0, variableArgs: false }, + EX: { id: OPS.endCompat, numArgs: 0, variableArgs: false }, + + // (reserved partial commands for the lexer) + BM: null, + BD: null, + 'true': null, + fa: null, + fal: null, + fals: null, + 'false': null, + nu: null, + nul: null, + 'null': null + }; + + function EvaluatorPreprocessor(stream, xref, stateManager) { + // TODO(mduan): pass array of knownCommands rather than OP_MAP + // dictionary + this.parser = new Parser(new Lexer(stream, OP_MAP), false, xref); + this.stateManager = stateManager; + this.nonProcessedArgs = []; + } + + EvaluatorPreprocessor.prototype = { + get savedStatesDepth() { + return this.stateManager.stateStack.length; + }, + + // |operation| is an object with two fields: + // + // - |fn| is an out param. + // + // - |args| is an inout param. On entry, it should have one of two values. + // + // - An empty array. This indicates that the caller is providing the + // array in which the args will be stored in. The caller should use + // this value if it can reuse a single array for each call to read(). + // + // - |null|. This indicates that the caller needs this function to create + // the array in which any args are stored in. If there are zero args, + // this function will leave |operation.args| as |null| (thus avoiding + // allocations that would occur if we used an empty array to represent + // zero arguments). Otherwise, it will replace |null| with a new array + // containing the arguments. The caller should use this value if it + // cannot reuse an array for each call to read(). + // + // These two modes are present because this function is very hot and so + // avoiding allocations where possible is worthwhile. + // + read: function EvaluatorPreprocessor_read(operation) { + var args = operation.args; + while (true) { + var obj = this.parser.getObj(); + if (isCmd(obj)) { + var cmd = obj.cmd; + // Check that the command is valid + var opSpec = OP_MAP[cmd]; + if (!opSpec) { + warn('Unknown command "' + cmd + '"'); + continue; + } + + var fn = opSpec.id; + var numArgs = opSpec.numArgs; + var argsLength = args !== null ? args.length : 0; + + if (!opSpec.variableArgs) { + // Postscript commands can be nested, e.g. /F2 /GS2 gs 5.711 Tf + if (argsLength !== numArgs) { + var nonProcessedArgs = this.nonProcessedArgs; + while (argsLength > numArgs) { + nonProcessedArgs.push(args.shift()); + argsLength--; + } + while (argsLength < numArgs && nonProcessedArgs.length !== 0) { + if (!args) { + args = []; + } + args.unshift(nonProcessedArgs.pop()); + argsLength++; + } + } + + if (argsLength < numArgs) { + // If we receive too few args, it's not possible to possible + // to execute the command, so skip the command + info('Command ' + fn + ': because expected ' + + numArgs + ' args, but received ' + argsLength + + ' args; skipping'); + args = null; + continue; + } + } else if (argsLength > numArgs) { + info('Command ' + fn + ': expected [0,' + numArgs + + '] args, but received ' + argsLength + ' args'); + } + + // TODO figure out how to type-check vararg functions + this.preprocessCommand(fn, args); + + operation.fn = fn; + operation.args = args; + return true; + } else { + if (isEOF(obj)) { + return false; // no more commands + } + // argument + if (obj !== null) { + if (!args) { + args = []; + } + args.push((obj instanceof Dict ? obj.getAll() : obj)); + assert(args.length <= 33, 'Too many arguments'); + } + } + } + }, + + preprocessCommand: + function EvaluatorPreprocessor_preprocessCommand(fn, args) { + switch (fn | 0) { + case OPS.save: + this.stateManager.save(); + break; + case OPS.restore: + this.stateManager.restore(); + break; + case OPS.transform: + this.stateManager.transform(args); + break; + } + } + }; + return EvaluatorPreprocessor; +})(); + +var QueueOptimizer = (function QueueOptimizerClosure() { + function addState(parentState, pattern, fn) { + var state = parentState; + for (var i = 0, ii = pattern.length - 1; i < ii; i++) { + var item = pattern[i]; + state = (state[item] || (state[item] = [])); + } + state[pattern[pattern.length - 1]] = fn; + } + + function handlePaintSolidColorImageMask(iFirstSave, count, fnArray, + argsArray) { + // Handles special case of mainly LaTeX documents which use image masks to + // draw lines with the current fill style. + // 'count' groups of (save, transform, paintImageMaskXObject, restore)+ + // have been found at iFirstSave. + var iFirstPIMXO = iFirstSave + 2; + for (var i = 0; i < count; i++) { + var arg = argsArray[iFirstPIMXO + 4 * i]; + var imageMask = arg.length === 1 && arg[0]; + if (imageMask && imageMask.width === 1 && imageMask.height === 1 && + (!imageMask.data.length || + (imageMask.data.length === 1 && imageMask.data[0] === 0))) { + fnArray[iFirstPIMXO + 4 * i] = OPS.paintSolidColorImageMask; + continue; + } + break; + } + return count - i; + } + + var InitialState = []; + + // This replaces (save, transform, paintInlineImageXObject, restore)+ + // sequences with one |paintInlineImageXObjectGroup| operation. + addState(InitialState, + [OPS.save, OPS.transform, OPS.paintInlineImageXObject, OPS.restore], + function foundInlineImageGroup(context) { + var MIN_IMAGES_IN_INLINE_IMAGES_BLOCK = 10; + var MAX_IMAGES_IN_INLINE_IMAGES_BLOCK = 200; + var MAX_WIDTH = 1000; + var IMAGE_PADDING = 1; + + var fnArray = context.fnArray, argsArray = context.argsArray; + var curr = context.iCurr; + var iFirstSave = curr - 3; + var iFirstTransform = curr - 2; + var iFirstPIIXO = curr - 1; + + // Look for the quartets. + var i = iFirstSave + 4; + var ii = fnArray.length; + while (i + 3 < ii) { + if (fnArray[i] !== OPS.save || + fnArray[i + 1] !== OPS.transform || + fnArray[i + 2] !== OPS.paintInlineImageXObject || + fnArray[i + 3] !== OPS.restore) { + break; // ops don't match + } + i += 4; + } + + // At this point, i is the index of the first op past the last valid + // quartet. + var count = Math.min((i - iFirstSave) / 4, + MAX_IMAGES_IN_INLINE_IMAGES_BLOCK); + if (count < MIN_IMAGES_IN_INLINE_IMAGES_BLOCK) { + return i; + } + + // assuming that heights of those image is too small (~1 pixel) + // packing as much as possible by lines + var maxX = 0; + var map = [], maxLineHeight = 0; + var currentX = IMAGE_PADDING, currentY = IMAGE_PADDING; + var q; + for (q = 0; q < count; q++) { + var transform = argsArray[iFirstTransform + (q << 2)]; + var img = argsArray[iFirstPIIXO + (q << 2)][0]; + if (currentX + img.width > MAX_WIDTH) { + // starting new line + maxX = Math.max(maxX, currentX); + currentY += maxLineHeight + 2 * IMAGE_PADDING; + currentX = 0; + maxLineHeight = 0; + } + map.push({ + transform: transform, + x: currentX, y: currentY, + w: img.width, h: img.height + }); + currentX += img.width + 2 * IMAGE_PADDING; + maxLineHeight = Math.max(maxLineHeight, img.height); + } + var imgWidth = Math.max(maxX, currentX) + IMAGE_PADDING; + var imgHeight = currentY + maxLineHeight + IMAGE_PADDING; + var imgData = new Uint8Array(imgWidth * imgHeight * 4); + var imgRowSize = imgWidth << 2; + for (q = 0; q < count; q++) { + var data = argsArray[iFirstPIIXO + (q << 2)][0].data; + // Copy image by lines and extends pixels into padding. + var rowSize = map[q].w << 2; + var dataOffset = 0; + var offset = (map[q].x + map[q].y * imgWidth) << 2; + imgData.set(data.subarray(0, rowSize), offset - imgRowSize); + for (var k = 0, kk = map[q].h; k < kk; k++) { + imgData.set(data.subarray(dataOffset, dataOffset + rowSize), offset); + dataOffset += rowSize; + offset += imgRowSize; + } + imgData.set(data.subarray(dataOffset - rowSize, dataOffset), offset); + while (offset >= 0) { + data[offset - 4] = data[offset]; + data[offset - 3] = data[offset + 1]; + data[offset - 2] = data[offset + 2]; + data[offset - 1] = data[offset + 3]; + data[offset + rowSize] = data[offset + rowSize - 4]; + data[offset + rowSize + 1] = data[offset + rowSize - 3]; + data[offset + rowSize + 2] = data[offset + rowSize - 2]; + data[offset + rowSize + 3] = data[offset + rowSize - 1]; + offset -= imgRowSize; + } + } + + // Replace queue items. + fnArray.splice(iFirstSave, count * 4, OPS.paintInlineImageXObjectGroup); + argsArray.splice(iFirstSave, count * 4, + [{ width: imgWidth, height: imgHeight, kind: ImageKind.RGBA_32BPP, + data: imgData }, map]); + + return iFirstSave + 1; + }); + + // This replaces (save, transform, paintImageMaskXObject, restore)+ + // sequences with one |paintImageMaskXObjectGroup| or one + // |paintImageMaskXObjectRepeat| operation. + addState(InitialState, + [OPS.save, OPS.transform, OPS.paintImageMaskXObject, OPS.restore], + function foundImageMaskGroup(context) { + var MIN_IMAGES_IN_MASKS_BLOCK = 10; + var MAX_IMAGES_IN_MASKS_BLOCK = 100; + var MAX_SAME_IMAGES_IN_MASKS_BLOCK = 1000; + + var fnArray = context.fnArray, argsArray = context.argsArray; + var curr = context.iCurr; + var iFirstSave = curr - 3; + var iFirstTransform = curr - 2; + var iFirstPIMXO = curr - 1; + + // Look for the quartets. + var i = iFirstSave + 4; + var ii = fnArray.length; + while (i + 3 < ii) { + if (fnArray[i] !== OPS.save || + fnArray[i + 1] !== OPS.transform || + fnArray[i + 2] !== OPS.paintImageMaskXObject || + fnArray[i + 3] !== OPS.restore) { + break; // ops don't match + } + i += 4; + } + + // At this point, i is the index of the first op past the last valid + // quartet. + var count = (i - iFirstSave) / 4; + count = handlePaintSolidColorImageMask(iFirstSave, count, fnArray, + argsArray); + if (count < MIN_IMAGES_IN_MASKS_BLOCK) { + return i; + } + + var q; + var isSameImage = false; + var iTransform, transformArgs; + var firstPIMXOArg0 = argsArray[iFirstPIMXO][0]; + if (argsArray[iFirstTransform][1] === 0 && + argsArray[iFirstTransform][2] === 0) { + isSameImage = true; + var firstTransformArg0 = argsArray[iFirstTransform][0]; + var firstTransformArg3 = argsArray[iFirstTransform][3]; + iTransform = iFirstTransform + 4; + var iPIMXO = iFirstPIMXO + 4; + for (q = 1; q < count; q++, iTransform += 4, iPIMXO += 4) { + transformArgs = argsArray[iTransform]; + if (argsArray[iPIMXO][0] !== firstPIMXOArg0 || + transformArgs[0] !== firstTransformArg0 || + transformArgs[1] !== 0 || + transformArgs[2] !== 0 || + transformArgs[3] !== firstTransformArg3) { + if (q < MIN_IMAGES_IN_MASKS_BLOCK) { + isSameImage = false; + } else { + count = q; + } + break; // different image or transform + } + } + } + + if (isSameImage) { + count = Math.min(count, MAX_SAME_IMAGES_IN_MASKS_BLOCK); + var positions = new Float32Array(count * 2); + iTransform = iFirstTransform; + for (q = 0; q < count; q++, iTransform += 4) { + transformArgs = argsArray[iTransform]; + positions[(q << 1)] = transformArgs[4]; + positions[(q << 1) + 1] = transformArgs[5]; + } + + // Replace queue items. + fnArray.splice(iFirstSave, count * 4, OPS.paintImageMaskXObjectRepeat); + argsArray.splice(iFirstSave, count * 4, + [firstPIMXOArg0, firstTransformArg0, firstTransformArg3, positions]); + } else { + count = Math.min(count, MAX_IMAGES_IN_MASKS_BLOCK); + var images = []; + for (q = 0; q < count; q++) { + transformArgs = argsArray[iFirstTransform + (q << 2)]; + var maskParams = argsArray[iFirstPIMXO + (q << 2)][0]; + images.push({ data: maskParams.data, width: maskParams.width, + height: maskParams.height, + transform: transformArgs }); + } + + // Replace queue items. + fnArray.splice(iFirstSave, count * 4, OPS.paintImageMaskXObjectGroup); + argsArray.splice(iFirstSave, count * 4, [images]); + } + + return iFirstSave + 1; + }); + + // This replaces (save, transform, paintImageXObject, restore)+ sequences + // with one paintImageXObjectRepeat operation, if the |transform| and + // |paintImageXObjectRepeat| ops are appropriate. + addState(InitialState, + [OPS.save, OPS.transform, OPS.paintImageXObject, OPS.restore], + function (context) { + var MIN_IMAGES_IN_BLOCK = 3; + var MAX_IMAGES_IN_BLOCK = 1000; + + var fnArray = context.fnArray, argsArray = context.argsArray; + var curr = context.iCurr; + var iFirstSave = curr - 3; + var iFirstTransform = curr - 2; + var iFirstPIXO = curr - 1; + var iFirstRestore = curr; + + if (argsArray[iFirstTransform][1] !== 0 || + argsArray[iFirstTransform][2] !== 0) { + return iFirstRestore + 1; // transform has the wrong form + } + + // Look for the quartets. + var firstPIXOArg0 = argsArray[iFirstPIXO][0]; + var firstTransformArg0 = argsArray[iFirstTransform][0]; + var firstTransformArg3 = argsArray[iFirstTransform][3]; + var i = iFirstSave + 4; + var ii = fnArray.length; + while (i + 3 < ii) { + if (fnArray[i] !== OPS.save || + fnArray[i + 1] !== OPS.transform || + fnArray[i + 2] !== OPS.paintImageXObject || + fnArray[i + 3] !== OPS.restore) { + break; // ops don't match + } + if (argsArray[i + 1][0] !== firstTransformArg0 || + argsArray[i + 1][1] !== 0 || + argsArray[i + 1][2] !== 0 || + argsArray[i + 1][3] !== firstTransformArg3) { + break; // transforms don't match + } + if (argsArray[i + 2][0] !== firstPIXOArg0) { + break; // images don't match + } + i += 4; + } + + // At this point, i is the index of the first op past the last valid + // quartet. + var count = Math.min((i - iFirstSave) / 4, MAX_IMAGES_IN_BLOCK); + if (count < MIN_IMAGES_IN_BLOCK) { + return i; + } + + // Extract the (x,y) positions from all of the matching transforms. + var positions = new Float32Array(count * 2); + var iTransform = iFirstTransform; + for (var q = 0; q < count; q++, iTransform += 4) { + var transformArgs = argsArray[iTransform]; + positions[(q << 1)] = transformArgs[4]; + positions[(q << 1) + 1] = transformArgs[5]; + } + + // Replace queue items. + var args = [firstPIXOArg0, firstTransformArg0, firstTransformArg3, + positions]; + fnArray.splice(iFirstSave, count * 4, OPS.paintImageXObjectRepeat); + argsArray.splice(iFirstSave, count * 4, args); + + return iFirstSave + 1; + }); + + // This replaces (beginText, setFont, setTextMatrix, showText, endText)+ + // sequences with (beginText, setFont, (setTextMatrix, showText)+, endText)+ + // sequences, if the font for each one is the same. + addState(InitialState, + [OPS.beginText, OPS.setFont, OPS.setTextMatrix, OPS.showText, OPS.endText], + function (context) { + var MIN_CHARS_IN_BLOCK = 3; + var MAX_CHARS_IN_BLOCK = 1000; + + var fnArray = context.fnArray, argsArray = context.argsArray; + var curr = context.iCurr; + var iFirstBeginText = curr - 4; + var iFirstSetFont = curr - 3; + var iFirstSetTextMatrix = curr - 2; + var iFirstShowText = curr - 1; + var iFirstEndText = curr; + + // Look for the quintets. + var firstSetFontArg0 = argsArray[iFirstSetFont][0]; + var firstSetFontArg1 = argsArray[iFirstSetFont][1]; + var i = iFirstBeginText + 5; + var ii = fnArray.length; + while (i + 4 < ii) { + if (fnArray[i] !== OPS.beginText || + fnArray[i + 1] !== OPS.setFont || + fnArray[i + 2] !== OPS.setTextMatrix || + fnArray[i + 3] !== OPS.showText || + fnArray[i + 4] !== OPS.endText) { + break; // ops don't match + } + if (argsArray[i + 1][0] !== firstSetFontArg0 || + argsArray[i + 1][1] !== firstSetFontArg1) { + break; // fonts don't match + } + i += 5; + } + + // At this point, i is the index of the first op past the last valid + // quintet. + var count = Math.min(((i - iFirstBeginText) / 5), MAX_CHARS_IN_BLOCK); + if (count < MIN_CHARS_IN_BLOCK) { + return i; + } + + // If the preceding quintet is (, setFont, setTextMatrix, + // showText, endText), include that as well. (E.g. might be + // |dependency|.) + var iFirst = iFirstBeginText; + if (iFirstBeginText >= 4 && + fnArray[iFirstBeginText - 4] === fnArray[iFirstSetFont] && + fnArray[iFirstBeginText - 3] === fnArray[iFirstSetTextMatrix] && + fnArray[iFirstBeginText - 2] === fnArray[iFirstShowText] && + fnArray[iFirstBeginText - 1] === fnArray[iFirstEndText] && + argsArray[iFirstBeginText - 4][0] === firstSetFontArg0 && + argsArray[iFirstBeginText - 4][1] === firstSetFontArg1) { + count++; + iFirst -= 5; + } + + // Remove (endText, beginText, setFont) trios. + var iEndText = iFirst + 4; + for (var q = 1; q < count; q++) { + fnArray.splice(iEndText, 3); + argsArray.splice(iEndText, 3); + iEndText += 2; + } + + return iEndText + 1; + }); + + function QueueOptimizer() {} + + QueueOptimizer.prototype = { + optimize: function QueueOptimizer_optimize(queue) { + var fnArray = queue.fnArray, argsArray = queue.argsArray; + var context = { + iCurr: 0, + fnArray: fnArray, + argsArray: argsArray + }; + var state; + var i = 0, ii = fnArray.length; + while (i < ii) { + state = (state || InitialState)[fnArray[i]]; + if (typeof state === 'function') { // we found some handler + context.iCurr = i; + // state() returns the index of the first non-matching op (if we + // didn't match) or the first op past the modified ops (if we did + // match and replace). + i = state(context); + state = undefined; // reset the state machine + ii = context.fnArray.length; + } else { + i++; + } + } + } + }; + return QueueOptimizer; +})(); + + +var BUILT_IN_CMAPS = [ +// << Start unicode maps. +'Adobe-GB1-UCS2', +'Adobe-CNS1-UCS2', +'Adobe-Japan1-UCS2', +'Adobe-Korea1-UCS2', +// >> End unicode maps. +'78-EUC-H', +'78-EUC-V', +'78-H', +'78-RKSJ-H', +'78-RKSJ-V', +'78-V', +'78ms-RKSJ-H', +'78ms-RKSJ-V', +'83pv-RKSJ-H', +'90ms-RKSJ-H', +'90ms-RKSJ-V', +'90msp-RKSJ-H', +'90msp-RKSJ-V', +'90pv-RKSJ-H', +'90pv-RKSJ-V', +'Add-H', +'Add-RKSJ-H', +'Add-RKSJ-V', +'Add-V', +'Adobe-CNS1-0', +'Adobe-CNS1-1', +'Adobe-CNS1-2', +'Adobe-CNS1-3', +'Adobe-CNS1-4', +'Adobe-CNS1-5', +'Adobe-CNS1-6', +'Adobe-GB1-0', +'Adobe-GB1-1', +'Adobe-GB1-2', +'Adobe-GB1-3', +'Adobe-GB1-4', +'Adobe-GB1-5', +'Adobe-Japan1-0', +'Adobe-Japan1-1', +'Adobe-Japan1-2', +'Adobe-Japan1-3', +'Adobe-Japan1-4', +'Adobe-Japan1-5', +'Adobe-Japan1-6', +'Adobe-Korea1-0', +'Adobe-Korea1-1', +'Adobe-Korea1-2', +'B5-H', +'B5-V', +'B5pc-H', +'B5pc-V', +'CNS-EUC-H', +'CNS-EUC-V', +'CNS1-H', +'CNS1-V', +'CNS2-H', +'CNS2-V', +'ETHK-B5-H', +'ETHK-B5-V', +'ETen-B5-H', +'ETen-B5-V', +'ETenms-B5-H', +'ETenms-B5-V', +'EUC-H', +'EUC-V', +'Ext-H', +'Ext-RKSJ-H', +'Ext-RKSJ-V', +'Ext-V', +'GB-EUC-H', +'GB-EUC-V', +'GB-H', +'GB-V', +'GBK-EUC-H', +'GBK-EUC-V', +'GBK2K-H', +'GBK2K-V', +'GBKp-EUC-H', +'GBKp-EUC-V', +'GBT-EUC-H', +'GBT-EUC-V', +'GBT-H', +'GBT-V', +'GBTpc-EUC-H', +'GBTpc-EUC-V', +'GBpc-EUC-H', +'GBpc-EUC-V', +'H', +'HKdla-B5-H', +'HKdla-B5-V', +'HKdlb-B5-H', +'HKdlb-B5-V', +'HKgccs-B5-H', +'HKgccs-B5-V', +'HKm314-B5-H', +'HKm314-B5-V', +'HKm471-B5-H', +'HKm471-B5-V', +'HKscs-B5-H', +'HKscs-B5-V', +'Hankaku', +'Hiragana', +'KSC-EUC-H', +'KSC-EUC-V', +'KSC-H', +'KSC-Johab-H', +'KSC-Johab-V', +'KSC-V', +'KSCms-UHC-H', +'KSCms-UHC-HW-H', +'KSCms-UHC-HW-V', +'KSCms-UHC-V', +'KSCpc-EUC-H', +'KSCpc-EUC-V', +'Katakana', +'NWP-H', +'NWP-V', +'RKSJ-H', +'RKSJ-V', +'Roman', +'UniCNS-UCS2-H', +'UniCNS-UCS2-V', +'UniCNS-UTF16-H', +'UniCNS-UTF16-V', +'UniCNS-UTF32-H', +'UniCNS-UTF32-V', +'UniCNS-UTF8-H', +'UniCNS-UTF8-V', +'UniGB-UCS2-H', +'UniGB-UCS2-V', +'UniGB-UTF16-H', +'UniGB-UTF16-V', +'UniGB-UTF32-H', +'UniGB-UTF32-V', +'UniGB-UTF8-H', +'UniGB-UTF8-V', +'UniJIS-UCS2-H', +'UniJIS-UCS2-HW-H', +'UniJIS-UCS2-HW-V', +'UniJIS-UCS2-V', +'UniJIS-UTF16-H', +'UniJIS-UTF16-V', +'UniJIS-UTF32-H', +'UniJIS-UTF32-V', +'UniJIS-UTF8-H', +'UniJIS-UTF8-V', +'UniJIS2004-UTF16-H', +'UniJIS2004-UTF16-V', +'UniJIS2004-UTF32-H', +'UniJIS2004-UTF32-V', +'UniJIS2004-UTF8-H', +'UniJIS2004-UTF8-V', +'UniJISPro-UCS2-HW-V', +'UniJISPro-UCS2-V', +'UniJISPro-UTF8-V', +'UniJISX0213-UTF32-H', +'UniJISX0213-UTF32-V', +'UniJISX02132004-UTF32-H', +'UniJISX02132004-UTF32-V', +'UniKS-UCS2-H', +'UniKS-UCS2-V', +'UniKS-UTF16-H', +'UniKS-UTF16-V', +'UniKS-UTF32-H', +'UniKS-UTF32-V', +'UniKS-UTF8-H', +'UniKS-UTF8-V', +'V', +'WP-Symbol']; + +// CMap, not to be confused with TrueType's cmap. +var CMap = (function CMapClosure() { + function CMap(builtInCMap) { + // Codespace ranges are stored as follows: + // [[1BytePairs], [2BytePairs], [3BytePairs], [4BytePairs]] + // where nBytePairs are ranges e.g. [low1, high1, low2, high2, ...] + this.codespaceRanges = [[], [], [], []]; + this.numCodespaceRanges = 0; + // Map entries have one of two forms. + // - cid chars are 16-bit unsigned integers, stored as integers. + // - bf chars are variable-length byte sequences, stored as strings, with + // one byte per character. + this._map = []; + this.name = ''; + this.vertical = false; + this.useCMap = null; + this.builtInCMap = builtInCMap; + } + CMap.prototype = { + addCodespaceRange: function(n, low, high) { + this.codespaceRanges[n - 1].push(low, high); + this.numCodespaceRanges++; + }, + + mapCidRange: function(low, high, dstLow) { + while (low <= high) { + this._map[low++] = dstLow++; + } + }, + + mapBfRange: function(low, high, dstLow) { + var lastByte = dstLow.length - 1; + while (low <= high) { + this._map[low++] = dstLow; + // Only the last byte has to be incremented. + dstLow = dstLow.substr(0, lastByte) + + String.fromCharCode(dstLow.charCodeAt(lastByte) + 1); + } + }, + + mapBfRangeToArray: function(low, high, array) { + var i = 0, ii = array.length; + while (low <= high && i < ii) { + this._map[low] = array[i++]; + ++low; + } + }, + + // This is used for both bf and cid chars. + mapOne: function(src, dst) { + this._map[src] = dst; + }, + + lookup: function(code) { + return this._map[code]; + }, + + contains: function(code) { + return this._map[code] !== undefined; + }, + + forEach: function(callback) { + // Most maps have fewer than 65536 entries, and for those we use normal + // array iteration. But really sparse tables are possible -- e.g. with + // indices in the *billions*. For such tables we use for..in, which isn't + // ideal because it stringifies the indices for all present elements, but + // it does avoid iterating over every undefined entry. + var map = this._map; + var length = map.length; + var i; + if (length <= 0x10000) { + for (i = 0; i < length; i++) { + if (map[i] !== undefined) { + callback(i, map[i]); + } + } + } else { + for (i in this._map) { + callback(i, map[i]); + } + } + }, + + charCodeOf: function(value) { + return this._map.indexOf(value); + }, + + getMap: function() { + return this._map; + }, + + readCharCode: function(str, offset, out) { + var c = 0; + var codespaceRanges = this.codespaceRanges; + var codespaceRangesLen = this.codespaceRanges.length; + // 9.7.6.2 CMap Mapping + // The code length is at most 4. + for (var n = 0; n < codespaceRangesLen; n++) { + c = ((c << 8) | str.charCodeAt(offset + n)) >>> 0; + // Check each codespace range to see if it falls within. + var codespaceRange = codespaceRanges[n]; + for (var k = 0, kk = codespaceRange.length; k < kk;) { + var low = codespaceRange[k++]; + var high = codespaceRange[k++]; + if (c >= low && c <= high) { + out.charcode = c; + out.length = n + 1; + return; + } + } + } + out.charcode = 0; + out.length = 1; + }, + + get isIdentityCMap() { + if (!(this.name === 'Identity-H' || this.name === 'Identity-V')) { + return false; + } + if (this._map.length !== 0x10000) { + return false; + } + for (var i = 0; i < 0x10000; i++) { + if (this._map[i] !== i) { + return false; + } + } + return true; + } + }; + return CMap; +})(); + +// A special case of CMap, where the _map array implicitly has a length of +// 65536 and each element is equal to its index. +var IdentityCMap = (function IdentityCMapClosure() { + function IdentityCMap(vertical, n) { + CMap.call(this); + this.vertical = vertical; + this.addCodespaceRange(n, 0, 0xffff); + } + Util.inherit(IdentityCMap, CMap, {}); + + IdentityCMap.prototype = { + addCodespaceRange: CMap.prototype.addCodespaceRange, + + mapCidRange: function(low, high, dstLow) { + error('should not call mapCidRange'); + }, + + mapBfRange: function(low, high, dstLow) { + error('should not call mapBfRange'); + }, + + mapBfRangeToArray: function(low, high, array) { + error('should not call mapBfRangeToArray'); + }, + + mapOne: function(src, dst) { + error('should not call mapCidOne'); + }, + + lookup: function(code) { + return (isInt(code) && code <= 0xffff) ? code : undefined; + }, + + contains: function(code) { + return isInt(code) && code <= 0xffff; + }, + + forEach: function(callback) { + for (var i = 0; i <= 0xffff; i++) { + callback(i, i); + } + }, + + charCodeOf: function(value) { + return (isInt(value) && value <= 0xffff) ? value : -1; + }, + + getMap: function() { + // Sometimes identity maps must be instantiated, but it's rare. + var map = new Array(0x10000); + for (var i = 0; i <= 0xffff; i++) { + map[i] = i; + } + return map; + }, + + readCharCode: CMap.prototype.readCharCode, + + get isIdentityCMap() { + error('should not access .isIdentityCMap'); + } + }; + + return IdentityCMap; +})(); + +var BinaryCMapReader = (function BinaryCMapReaderClosure() { + function fetchBinaryData(url) { + var nonBinaryRequest = PDFJS.disableWorker; + var request = new XMLHttpRequest(); + request.open('GET', url, false); + if (!nonBinaryRequest) { + try { + request.responseType = 'arraybuffer'; + nonBinaryRequest = request.responseType !== 'arraybuffer'; + } catch (e) { + nonBinaryRequest = true; + } + } + if (nonBinaryRequest && request.overrideMimeType) { + request.overrideMimeType('text/plain; charset=x-user-defined'); + } + request.send(null); + if (nonBinaryRequest ? !request.responseText : !request.response) { + error('Unable to get binary cMap at: ' + url); + } + if (nonBinaryRequest) { + var data = Array.prototype.map.call(request.responseText, function (ch) { + return ch.charCodeAt(0) & 255; + }); + return new Uint8Array(data); + } + return new Uint8Array(request.response); + } + + function hexToInt(a, size) { + var n = 0; + for (var i = 0; i <= size; i++) { + n = (n << 8) | a[i]; + } + return n >>> 0; + } + + function hexToStr(a, size) { + // This code is hot. Special-case some common values to avoid creating an + // object with subarray(). + if (size === 1) { + return String.fromCharCode(a[0], a[1]); + } + if (size === 3) { + return String.fromCharCode(a[0], a[1], a[2], a[3]); + } + return String.fromCharCode.apply(null, a.subarray(0, size + 1)); + } + + function addHex(a, b, size) { + var c = 0; + for (var i = size; i >= 0; i--) { + c += a[i] + b[i]; + a[i] = c & 255; + c >>= 8; + } + } + + function incHex(a, size) { + var c = 1; + for (var i = size; i >= 0 && c > 0; i--) { + c += a[i]; + a[i] = c & 255; + c >>= 8; + } + } + + var MAX_NUM_SIZE = 16; + var MAX_ENCODED_NUM_SIZE = 19; // ceil(MAX_NUM_SIZE * 7 / 8) + + function BinaryCMapStream(data) { + this.buffer = data; + this.pos = 0; + this.end = data.length; + this.tmpBuf = new Uint8Array(MAX_ENCODED_NUM_SIZE); + } + + BinaryCMapStream.prototype = { + readByte: function () { + if (this.pos >= this.end) { + return -1; + } + return this.buffer[this.pos++]; + }, + readNumber: function () { + var n = 0; + var last; + do { + var b = this.readByte(); + if (b < 0) { + error('unexpected EOF in bcmap'); + } + last = !(b & 0x80); + n = (n << 7) | (b & 0x7F); + } while (!last); + return n; + }, + readSigned: function () { + var n = this.readNumber(); + return (n & 1) ? ~(n >>> 1) : n >>> 1; + }, + readHex: function (num, size) { + num.set(this.buffer.subarray(this.pos, + this.pos + size + 1)); + this.pos += size + 1; + }, + readHexNumber: function (num, size) { + var last; + var stack = this.tmpBuf, sp = 0; + do { + var b = this.readByte(); + if (b < 0) { + error('unexpected EOF in bcmap'); + } + last = !(b & 0x80); + stack[sp++] = b & 0x7F; + } while (!last); + var i = size, buffer = 0, bufferSize = 0; + while (i >= 0) { + while (bufferSize < 8 && stack.length > 0) { + buffer = (stack[--sp] << bufferSize) | buffer; + bufferSize += 7; + } + num[i] = buffer & 255; + i--; + buffer >>= 8; + bufferSize -= 8; + } + }, + readHexSigned: function (num, size) { + this.readHexNumber(num, size); + var sign = num[size] & 1 ? 255 : 0; + var c = 0; + for (var i = 0; i <= size; i++) { + c = ((c & 1) << 8) | num[i]; + num[i] = (c >> 1) ^ sign; + } + }, + readString: function () { + var len = this.readNumber(); + var s = ''; + for (var i = 0; i < len; i++) { + s += String.fromCharCode(this.readNumber()); + } + return s; + } + }; + + function processBinaryCMap(url, cMap, extend) { + var data = fetchBinaryData(url); + var stream = new BinaryCMapStream(data); + + var header = stream.readByte(); + cMap.vertical = !!(header & 1); + + var useCMap = null; + var start = new Uint8Array(MAX_NUM_SIZE); + var end = new Uint8Array(MAX_NUM_SIZE); + var char = new Uint8Array(MAX_NUM_SIZE); + var charCode = new Uint8Array(MAX_NUM_SIZE); + var tmp = new Uint8Array(MAX_NUM_SIZE); + var code; + + var b; + while ((b = stream.readByte()) >= 0) { + var type = b >> 5; + if (type === 7) { // metadata, e.g. comment or usecmap + switch (b & 0x1F) { + case 0: + stream.readString(); // skipping comment + break; + case 1: + useCMap = stream.readString(); + break; + } + continue; + } + var sequence = !!(b & 0x10); + var dataSize = b & 15; + + assert(dataSize + 1 <= MAX_NUM_SIZE); + + var ucs2DataSize = 1; + var subitemsCount = stream.readNumber(); + var i; + switch (type) { + case 0: // codespacerange + stream.readHex(start, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + cMap.addCodespaceRange(dataSize + 1, hexToInt(start, dataSize), + hexToInt(end, dataSize)); + for (i = 1; i < subitemsCount; i++) { + incHex(end, dataSize); + stream.readHexNumber(start, dataSize); + addHex(start, end, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + cMap.addCodespaceRange(dataSize + 1, hexToInt(start, dataSize), + hexToInt(end, dataSize)); + } + break; + case 1: // notdefrange + stream.readHex(start, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + code = stream.readNumber(); + // undefined range, skipping + for (i = 1; i < subitemsCount; i++) { + incHex(end, dataSize); + stream.readHexNumber(start, dataSize); + addHex(start, end, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + code = stream.readNumber(); + // nop + } + break; + case 2: // cidchar + stream.readHex(char, dataSize); + code = stream.readNumber(); + cMap.mapOne(hexToInt(char, dataSize), code); + for (i = 1; i < subitemsCount; i++) { + incHex(char, dataSize); + if (!sequence) { + stream.readHexNumber(tmp, dataSize); + addHex(char, tmp, dataSize); + } + code = stream.readSigned() + (code + 1); + cMap.mapOne(hexToInt(char, dataSize), code); + } + break; + case 3: // cidrange + stream.readHex(start, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + code = stream.readNumber(); + cMap.mapCidRange(hexToInt(start, dataSize), hexToInt(end, dataSize), + code); + for (i = 1; i < subitemsCount; i++) { + incHex(end, dataSize); + if (!sequence) { + stream.readHexNumber(start, dataSize); + addHex(start, end, dataSize); + } else { + start.set(end); + } + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + code = stream.readNumber(); + cMap.mapCidRange(hexToInt(start, dataSize), hexToInt(end, dataSize), + code); + } + break; + case 4: // bfchar + stream.readHex(char, ucs2DataSize); + stream.readHex(charCode, dataSize); + cMap.mapOne(hexToInt(char, ucs2DataSize), + hexToStr(charCode, dataSize)); + for (i = 1; i < subitemsCount; i++) { + incHex(char, ucs2DataSize); + if (!sequence) { + stream.readHexNumber(tmp, ucs2DataSize); + addHex(char, tmp, ucs2DataSize); + } + incHex(charCode, dataSize); + stream.readHexSigned(tmp, dataSize); + addHex(charCode, tmp, dataSize); + cMap.mapOne(hexToInt(char, ucs2DataSize), + hexToStr(charCode, dataSize)); + } + break; + case 5: // bfrange + stream.readHex(start, ucs2DataSize); + stream.readHexNumber(end, ucs2DataSize); + addHex(end, start, ucs2DataSize); + stream.readHex(charCode, dataSize); + cMap.mapBfRange(hexToInt(start, ucs2DataSize), + hexToInt(end, ucs2DataSize), + hexToStr(charCode, dataSize)); + for (i = 1; i < subitemsCount; i++) { + incHex(end, ucs2DataSize); + if (!sequence) { + stream.readHexNumber(start, ucs2DataSize); + addHex(start, end, ucs2DataSize); + } else { + start.set(end); + } + stream.readHexNumber(end, ucs2DataSize); + addHex(end, start, ucs2DataSize); + stream.readHex(charCode, dataSize); + cMap.mapBfRange(hexToInt(start, ucs2DataSize), + hexToInt(end, ucs2DataSize), + hexToStr(charCode, dataSize)); + } + break; + default: + error('Unknown type: ' + type); + break; + } + } + + if (useCMap) { + extend(useCMap); + } + return cMap; + } + + function BinaryCMapReader() {} + + BinaryCMapReader.prototype = { + read: processBinaryCMap + }; + + return BinaryCMapReader; +})(); + +var CMapFactory = (function CMapFactoryClosure() { + function strToInt(str) { + var a = 0; + for (var i = 0; i < str.length; i++) { + a = (a << 8) | str.charCodeAt(i); + } + return a >>> 0; + } + + function expectString(obj) { + if (!isString(obj)) { + error('Malformed CMap: expected string.'); + } + } + + function expectInt(obj) { + if (!isInt(obj)) { + error('Malformed CMap: expected int.'); + } + } + + function parseBfChar(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endbfchar')) { + return; + } + expectString(obj); + var src = strToInt(obj); + obj = lexer.getObj(); + // TODO are /dstName used? + expectString(obj); + var dst = obj; + cMap.mapOne(src, dst); + } + } + + function parseBfRange(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endbfrange')) { + return; + } + expectString(obj); + var low = strToInt(obj); + obj = lexer.getObj(); + expectString(obj); + var high = strToInt(obj); + obj = lexer.getObj(); + if (isInt(obj) || isString(obj)) { + var dstLow = isInt(obj) ? String.fromCharCode(obj) : obj; + cMap.mapBfRange(low, high, dstLow); + } else if (isCmd(obj, '[')) { + obj = lexer.getObj(); + var array = []; + while (!isCmd(obj, ']') && !isEOF(obj)) { + array.push(obj); + obj = lexer.getObj(); + } + cMap.mapBfRangeToArray(low, high, array); + } else { + break; + } + } + error('Invalid bf range.'); + } + + function parseCidChar(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endcidchar')) { + return; + } + expectString(obj); + var src = strToInt(obj); + obj = lexer.getObj(); + expectInt(obj); + var dst = obj; + cMap.mapOne(src, dst); + } + } + + function parseCidRange(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endcidrange')) { + return; + } + expectString(obj); + var low = strToInt(obj); + obj = lexer.getObj(); + expectString(obj); + var high = strToInt(obj); + obj = lexer.getObj(); + expectInt(obj); + var dstLow = obj; + cMap.mapCidRange(low, high, dstLow); + } + } + + function parseCodespaceRange(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endcodespacerange')) { + return; + } + if (!isString(obj)) { + break; + } + var low = strToInt(obj); + obj = lexer.getObj(); + if (!isString(obj)) { + break; + } + var high = strToInt(obj); + cMap.addCodespaceRange(obj.length, low, high); + } + error('Invalid codespace range.'); + } + + function parseWMode(cMap, lexer) { + var obj = lexer.getObj(); + if (isInt(obj)) { + cMap.vertical = !!obj; + } + } + + function parseCMapName(cMap, lexer) { + var obj = lexer.getObj(); + if (isName(obj) && isString(obj.name)) { + cMap.name = obj.name; + } + } + + function parseCMap(cMap, lexer, builtInCMapParams, useCMap) { + var previous; + var embededUseCMap; + objLoop: while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } else if (isName(obj)) { + if (obj.name === 'WMode') { + parseWMode(cMap, lexer); + } else if (obj.name === 'CMapName') { + parseCMapName(cMap, lexer); + } + previous = obj; + } else if (isCmd(obj)) { + switch (obj.cmd) { + case 'endcmap': + break objLoop; + case 'usecmap': + if (isName(previous)) { + embededUseCMap = previous.name; + } + break; + case 'begincodespacerange': + parseCodespaceRange(cMap, lexer); + break; + case 'beginbfchar': + parseBfChar(cMap, lexer); + break; + case 'begincidchar': + parseCidChar(cMap, lexer); + break; + case 'beginbfrange': + parseBfRange(cMap, lexer); + break; + case 'begincidrange': + parseCidRange(cMap, lexer); + break; + } + } + } + + if (!useCMap && embededUseCMap) { + // Load the usecmap definition from the file only if there wasn't one + // specified. + useCMap = embededUseCMap; + } + if (useCMap) { + extendCMap(cMap, builtInCMapParams, useCMap); + } + } + + function extendCMap(cMap, builtInCMapParams, useCMap) { + cMap.useCMap = createBuiltInCMap(useCMap, builtInCMapParams); + // If there aren't any code space ranges defined clone all the parent ones + // into this cMap. + if (cMap.numCodespaceRanges === 0) { + var useCodespaceRanges = cMap.useCMap.codespaceRanges; + for (var i = 0; i < useCodespaceRanges.length; i++) { + cMap.codespaceRanges[i] = useCodespaceRanges[i].slice(); + } + cMap.numCodespaceRanges = cMap.useCMap.numCodespaceRanges; + } + // Merge the map into the current one, making sure not to override + // any previously defined entries. + cMap.useCMap.forEach(function(key, value) { + if (!cMap.contains(key)) { + cMap.mapOne(key, cMap.useCMap.lookup(key)); + } + }); + } + + function parseBinaryCMap(name, builtInCMapParams) { + var url = builtInCMapParams.url + name + '.bcmap'; + var cMap = new CMap(true); + new BinaryCMapReader().read(url, cMap, function (useCMap) { + extendCMap(cMap, builtInCMapParams, useCMap); + }); + return cMap; + } + + function createBuiltInCMap(name, builtInCMapParams) { + if (name === 'Identity-H') { + return new IdentityCMap(false, 2); + } else if (name === 'Identity-V') { + return new IdentityCMap(true, 2); + } + if (BUILT_IN_CMAPS.indexOf(name) === -1) { + error('Unknown cMap name: ' + name); + } + assert(builtInCMapParams, 'built-in cMap parameters are not provided'); + + if (builtInCMapParams.packed) { + return parseBinaryCMap(name, builtInCMapParams); + } + + var request = new XMLHttpRequest(); + var url = builtInCMapParams.url + name; + request.open('GET', url, false); + request.send(null); + if (!request.responseText) { + error('Unable to get cMap at: ' + url); + } + var cMap = new CMap(true); + var lexer = new Lexer(new StringStream(request.responseText)); + parseCMap(cMap, lexer, builtInCMapParams, null); + return cMap; + } + + return { + create: function (encoding, builtInCMapParams, useCMap) { + if (isName(encoding)) { + return createBuiltInCMap(encoding.name, builtInCMapParams); + } else if (isStream(encoding)) { + var cMap = new CMap(); + var lexer = new Lexer(encoding); + try { + parseCMap(cMap, lexer, builtInCMapParams, useCMap); + } catch (e) { + warn('Invalid CMap data. ' + e); + } + if (cMap.isIdentityCMap) { + return createBuiltInCMap(cMap.name, builtInCMapParams); + } + return cMap; + } + error('Encoding required.'); + } + }; +})(); + + +// Unicode Private Use Area +var PRIVATE_USE_OFFSET_START = 0xE000; +var PRIVATE_USE_OFFSET_END = 0xF8FF; +var SKIP_PRIVATE_USE_RANGE_F000_TO_F01F = false; + +// PDF Glyph Space Units are one Thousandth of a TextSpace Unit +// except for Type 3 fonts +var PDF_GLYPH_SPACE_UNITS = 1000; + +// Hinting is currently disabled due to unknown problems on windows +// in tracemonkey and various other pdfs with type1 fonts. +var HINTING_ENABLED = false; + +// Accented charactars are not displayed properly on windows, using this flag +// to control analysis of seac charstrings. +var SEAC_ANALYSIS_ENABLED = false; + +var FontFlags = { + FixedPitch: 1, + Serif: 2, + Symbolic: 4, + Script: 8, + Nonsymbolic: 32, + Italic: 64, + AllCap: 65536, + SmallCap: 131072, + ForceBold: 262144 +}; + +var Encodings = { + ExpertEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + 'space', 'exclamsmall', 'Hungarumlautsmall', '', 'dollaroldstyle', + 'dollarsuperior', 'ampersandsmall', 'Acutesmall', 'parenleftsuperior', + 'parenrightsuperior', 'twodotenleader', 'onedotenleader', 'comma', + 'hyphen', 'period', 'fraction', 'zerooldstyle', 'oneoldstyle', + 'twooldstyle', 'threeoldstyle', 'fouroldstyle', 'fiveoldstyle', + 'sixoldstyle', 'sevenoldstyle', 'eightoldstyle', 'nineoldstyle', 'colon', + 'semicolon', 'commasuperior', 'threequartersemdash', 'periodsuperior', + 'questionsmall', '', 'asuperior', 'bsuperior', 'centsuperior', 'dsuperior', + 'esuperior', '', '', 'isuperior', '', '', 'lsuperior', 'msuperior', + 'nsuperior', 'osuperior', '', '', 'rsuperior', 'ssuperior', 'tsuperior', + '', 'ff', 'fi', 'fl', 'ffi', 'ffl', 'parenleftinferior', '', + 'parenrightinferior', 'Circumflexsmall', 'hyphensuperior', 'Gravesmall', + 'Asmall', 'Bsmall', 'Csmall', 'Dsmall', 'Esmall', 'Fsmall', 'Gsmall', + 'Hsmall', 'Ismall', 'Jsmall', 'Ksmall', 'Lsmall', 'Msmall', 'Nsmall', + 'Osmall', 'Psmall', 'Qsmall', 'Rsmall', 'Ssmall', 'Tsmall', 'Usmall', + 'Vsmall', 'Wsmall', 'Xsmall', 'Ysmall', 'Zsmall', 'colonmonetary', + 'onefitted', 'rupiah', 'Tildesmall', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', 'exclamdownsmall', 'centoldstyle', 'Lslashsmall', + '', '', 'Scaronsmall', 'Zcaronsmall', 'Dieresissmall', 'Brevesmall', + 'Caronsmall', '', 'Dotaccentsmall', '', '', 'Macronsmall', '', '', + 'figuredash', 'hypheninferior', '', '', 'Ogoneksmall', 'Ringsmall', + 'Cedillasmall', '', '', '', 'onequarter', 'onehalf', 'threequarters', + 'questiondownsmall', 'oneeighth', 'threeeighths', 'fiveeighths', + 'seveneighths', 'onethird', 'twothirds', '', '', 'zerosuperior', + 'onesuperior', 'twosuperior', 'threesuperior', 'foursuperior', + 'fivesuperior', 'sixsuperior', 'sevensuperior', 'eightsuperior', + 'ninesuperior', 'zeroinferior', 'oneinferior', 'twoinferior', + 'threeinferior', 'fourinferior', 'fiveinferior', 'sixinferior', + 'seveninferior', 'eightinferior', 'nineinferior', 'centinferior', + 'dollarinferior', 'periodinferior', 'commainferior', 'Agravesmall', + 'Aacutesmall', 'Acircumflexsmall', 'Atildesmall', 'Adieresissmall', + 'Aringsmall', 'AEsmall', 'Ccedillasmall', 'Egravesmall', 'Eacutesmall', + 'Ecircumflexsmall', 'Edieresissmall', 'Igravesmall', 'Iacutesmall', + 'Icircumflexsmall', 'Idieresissmall', 'Ethsmall', 'Ntildesmall', + 'Ogravesmall', 'Oacutesmall', 'Ocircumflexsmall', 'Otildesmall', + 'Odieresissmall', 'OEsmall', 'Oslashsmall', 'Ugravesmall', 'Uacutesmall', + 'Ucircumflexsmall', 'Udieresissmall', 'Yacutesmall', 'Thornsmall', + 'Ydieresissmall'], + MacExpertEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + 'space', 'exclamsmall', 'Hungarumlautsmall', 'centoldstyle', + 'dollaroldstyle', 'dollarsuperior', 'ampersandsmall', 'Acutesmall', + 'parenleftsuperior', 'parenrightsuperior', 'twodotenleader', + 'onedotenleader', 'comma', 'hyphen', 'period', 'fraction', 'zerooldstyle', + 'oneoldstyle', 'twooldstyle', 'threeoldstyle', 'fouroldstyle', + 'fiveoldstyle', 'sixoldstyle', 'sevenoldstyle', 'eightoldstyle', + 'nineoldstyle', 'colon', 'semicolon', '', 'threequartersemdash', '', + 'questionsmall', '', '', '', '', 'Ethsmall', '', '', 'onequarter', + 'onehalf', 'threequarters', 'oneeighth', 'threeeighths', 'fiveeighths', + 'seveneighths', 'onethird', 'twothirds', '', '', '', '', '', '', 'ff', + 'fi', 'fl', 'ffi', 'ffl', 'parenleftinferior', '', 'parenrightinferior', + 'Circumflexsmall', 'hypheninferior', 'Gravesmall', 'Asmall', 'Bsmall', + 'Csmall', 'Dsmall', 'Esmall', 'Fsmall', 'Gsmall', 'Hsmall', 'Ismall', + 'Jsmall', 'Ksmall', 'Lsmall', 'Msmall', 'Nsmall', 'Osmall', 'Psmall', + 'Qsmall', 'Rsmall', 'Ssmall', 'Tsmall', 'Usmall', 'Vsmall', 'Wsmall', + 'Xsmall', 'Ysmall', 'Zsmall', 'colonmonetary', 'onefitted', 'rupiah', + 'Tildesmall', '', '', 'asuperior', 'centsuperior', '', '', '', '', + 'Aacutesmall', 'Agravesmall', 'Acircumflexsmall', 'Adieresissmall', + 'Atildesmall', 'Aringsmall', 'Ccedillasmall', 'Eacutesmall', 'Egravesmall', + 'Ecircumflexsmall', 'Edieresissmall', 'Iacutesmall', 'Igravesmall', + 'Icircumflexsmall', 'Idieresissmall', 'Ntildesmall', 'Oacutesmall', + 'Ogravesmall', 'Ocircumflexsmall', 'Odieresissmall', 'Otildesmall', + 'Uacutesmall', 'Ugravesmall', 'Ucircumflexsmall', 'Udieresissmall', '', + 'eightsuperior', 'fourinferior', 'threeinferior', 'sixinferior', + 'eightinferior', 'seveninferior', 'Scaronsmall', '', 'centinferior', + 'twoinferior', '', 'Dieresissmall', '', 'Caronsmall', 'osuperior', + 'fiveinferior', '', 'commainferior', 'periodinferior', 'Yacutesmall', '', + 'dollarinferior', '', 'Thornsmall', '', 'nineinferior', 'zeroinferior', + 'Zcaronsmall', 'AEsmall', 'Oslashsmall', 'questiondownsmall', + 'oneinferior', 'Lslashsmall', '', '', '', '', '', '', 'Cedillasmall', '', + '', '', '', '', 'OEsmall', 'figuredash', 'hyphensuperior', '', '', '', '', + 'exclamdownsmall', '', 'Ydieresissmall', '', 'onesuperior', 'twosuperior', + 'threesuperior', 'foursuperior', 'fivesuperior', 'sixsuperior', + 'sevensuperior', 'ninesuperior', 'zerosuperior', '', 'esuperior', + 'rsuperior', 'tsuperior', '', '', 'isuperior', 'ssuperior', 'dsuperior', + '', '', '', '', '', 'lsuperior', 'Ogoneksmall', 'Brevesmall', + 'Macronsmall', 'bsuperior', 'nsuperior', 'msuperior', 'commasuperior', + 'periodsuperior', 'Dotaccentsmall', 'Ringsmall'], + MacRomanEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + 'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', 'percent', + 'ampersand', 'quotesingle', 'parenleft', 'parenright', 'asterisk', 'plus', + 'comma', 'hyphen', 'period', 'slash', 'zero', 'one', 'two', 'three', + 'four', 'five', 'six', 'seven', 'eight', 'nine', 'colon', 'semicolon', + 'less', 'equal', 'greater', 'question', 'at', 'A', 'B', 'C', 'D', 'E', 'F', + 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', + 'V', 'W', 'X', 'Y', 'Z', 'bracketleft', 'backslash', 'bracketright', + 'asciicircum', 'underscore', 'grave', 'a', 'b', 'c', 'd', 'e', 'f', 'g', + 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', + 'w', 'x', 'y', 'z', 'braceleft', 'bar', 'braceright', 'asciitilde', '', + 'Adieresis', 'Aring', 'Ccedilla', 'Eacute', 'Ntilde', 'Odieresis', + 'Udieresis', 'aacute', 'agrave', 'acircumflex', 'adieresis', 'atilde', + 'aring', 'ccedilla', 'eacute', 'egrave', 'ecircumflex', 'edieresis', + 'iacute', 'igrave', 'icircumflex', 'idieresis', 'ntilde', 'oacute', + 'ograve', 'ocircumflex', 'odieresis', 'otilde', 'uacute', 'ugrave', + 'ucircumflex', 'udieresis', 'dagger', 'degree', 'cent', 'sterling', + 'section', 'bullet', 'paragraph', 'germandbls', 'registered', 'copyright', + 'trademark', 'acute', 'dieresis', 'notequal', 'AE', 'Oslash', 'infinity', + 'plusminus', 'lessequal', 'greaterequal', 'yen', 'mu', 'partialdiff', + 'summation', 'product', 'pi', 'integral', 'ordfeminine', 'ordmasculine', + 'Omega', 'ae', 'oslash', 'questiondown', 'exclamdown', 'logicalnot', + 'radical', 'florin', 'approxequal', 'Delta', 'guillemotleft', + 'guillemotright', 'ellipsis', 'space', 'Agrave', 'Atilde', 'Otilde', 'OE', + 'oe', 'endash', 'emdash', 'quotedblleft', 'quotedblright', 'quoteleft', + 'quoteright', 'divide', 'lozenge', 'ydieresis', 'Ydieresis', 'fraction', + 'currency', 'guilsinglleft', 'guilsinglright', 'fi', 'fl', 'daggerdbl', + 'periodcentered', 'quotesinglbase', 'quotedblbase', 'perthousand', + 'Acircumflex', 'Ecircumflex', 'Aacute', 'Edieresis', 'Egrave', 'Iacute', + 'Icircumflex', 'Idieresis', 'Igrave', 'Oacute', 'Ocircumflex', 'apple', + 'Ograve', 'Uacute', 'Ucircumflex', 'Ugrave', 'dotlessi', 'circumflex', + 'tilde', 'macron', 'breve', 'dotaccent', 'ring', 'cedilla', 'hungarumlaut', + 'ogonek', 'caron'], + StandardEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + 'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', 'percent', + 'ampersand', 'quoteright', 'parenleft', 'parenright', 'asterisk', 'plus', + 'comma', 'hyphen', 'period', 'slash', 'zero', 'one', 'two', 'three', + 'four', 'five', 'six', 'seven', 'eight', 'nine', 'colon', 'semicolon', + 'less', 'equal', 'greater', 'question', 'at', 'A', 'B', 'C', 'D', 'E', 'F', + 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', + 'V', 'W', 'X', 'Y', 'Z', 'bracketleft', 'backslash', 'bracketright', + 'asciicircum', 'underscore', 'quoteleft', 'a', 'b', 'c', 'd', 'e', 'f', + 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', + 'v', 'w', 'x', 'y', 'z', 'braceleft', 'bar', 'braceright', 'asciitilde', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', 'exclamdown', + 'cent', 'sterling', 'fraction', 'yen', 'florin', 'section', 'currency', + 'quotesingle', 'quotedblleft', 'guillemotleft', 'guilsinglleft', + 'guilsinglright', 'fi', 'fl', '', 'endash', 'dagger', 'daggerdbl', + 'periodcentered', '', 'paragraph', 'bullet', 'quotesinglbase', + 'quotedblbase', 'quotedblright', 'guillemotright', 'ellipsis', + 'perthousand', '', 'questiondown', '', 'grave', 'acute', 'circumflex', + 'tilde', 'macron', 'breve', 'dotaccent', 'dieresis', '', 'ring', 'cedilla', + '', 'hungarumlaut', 'ogonek', 'caron', 'emdash', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', 'AE', '', 'ordfeminine', '', '', + '', '', 'Lslash', 'Oslash', 'OE', 'ordmasculine', '', '', '', '', '', 'ae', + '', '', '', 'dotlessi', '', '', 'lslash', 'oslash', 'oe', 'germandbls'], + WinAnsiEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + 'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', 'percent', + 'ampersand', 'quotesingle', 'parenleft', 'parenright', 'asterisk', 'plus', + 'comma', 'hyphen', 'period', 'slash', 'zero', 'one', 'two', 'three', + 'four', 'five', 'six', 'seven', 'eight', 'nine', 'colon', 'semicolon', + 'less', 'equal', 'greater', 'question', 'at', 'A', 'B', 'C', 'D', 'E', 'F', + 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', + 'V', 'W', 'X', 'Y', 'Z', 'bracketleft', 'backslash', 'bracketright', + 'asciicircum', 'underscore', 'grave', 'a', 'b', 'c', 'd', 'e', 'f', 'g', + 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', + 'w', 'x', 'y', 'z', 'braceleft', 'bar', 'braceright', 'asciitilde', + 'bullet', 'Euro', 'bullet', 'quotesinglbase', 'florin', 'quotedblbase', + 'ellipsis', 'dagger', 'daggerdbl', 'circumflex', 'perthousand', 'Scaron', + 'guilsinglleft', 'OE', 'bullet', 'Zcaron', 'bullet', 'bullet', 'quoteleft', + 'quoteright', 'quotedblleft', 'quotedblright', 'bullet', 'endash', + 'emdash', 'tilde', 'trademark', 'scaron', 'guilsinglright', 'oe', 'bullet', + 'zcaron', 'Ydieresis', 'space', 'exclamdown', 'cent', 'sterling', + 'currency', 'yen', 'brokenbar', 'section', 'dieresis', 'copyright', + 'ordfeminine', 'guillemotleft', 'logicalnot', 'hyphen', 'registered', + 'macron', 'degree', 'plusminus', 'twosuperior', 'threesuperior', 'acute', + 'mu', 'paragraph', 'periodcentered', 'cedilla', 'onesuperior', + 'ordmasculine', 'guillemotright', 'onequarter', 'onehalf', 'threequarters', + 'questiondown', 'Agrave', 'Aacute', 'Acircumflex', 'Atilde', 'Adieresis', + 'Aring', 'AE', 'Ccedilla', 'Egrave', 'Eacute', 'Ecircumflex', 'Edieresis', + 'Igrave', 'Iacute', 'Icircumflex', 'Idieresis', 'Eth', 'Ntilde', 'Ograve', + 'Oacute', 'Ocircumflex', 'Otilde', 'Odieresis', 'multiply', 'Oslash', + 'Ugrave', 'Uacute', 'Ucircumflex', 'Udieresis', 'Yacute', 'Thorn', + 'germandbls', 'agrave', 'aacute', 'acircumflex', 'atilde', 'adieresis', + 'aring', 'ae', 'ccedilla', 'egrave', 'eacute', 'ecircumflex', 'edieresis', + 'igrave', 'iacute', 'icircumflex', 'idieresis', 'eth', 'ntilde', 'ograve', + 'oacute', 'ocircumflex', 'otilde', 'odieresis', 'divide', 'oslash', + 'ugrave', 'uacute', 'ucircumflex', 'udieresis', 'yacute', 'thorn', + 'ydieresis'], + SymbolSetEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + 'space', 'exclam', 'universal', 'numbersign', 'existential', 'percent', + 'ampersand', 'suchthat', 'parenleft', 'parenright', 'asteriskmath', 'plus', + 'comma', 'minus', 'period', 'slash', 'zero', 'one', 'two', 'three', 'four', + 'five', 'six', 'seven', 'eight', 'nine', 'colon', 'semicolon', 'less', + 'equal', 'greater', 'question', 'congruent', 'Alpha', 'Beta', 'Chi', + 'Delta', 'Epsilon', 'Phi', 'Gamma', 'Eta', 'Iota', 'theta1', 'Kappa', + 'Lambda', 'Mu', 'Nu', 'Omicron', 'Pi', 'Theta', 'Rho', 'Sigma', 'Tau', + 'Upsilon', 'sigma1', 'Omega', 'Xi', 'Psi', 'Zeta', 'bracketleft', + 'therefore', 'bracketright', 'perpendicular', 'underscore', 'radicalex', + 'alpha', 'beta', 'chi', 'delta', 'epsilon', 'phi', 'gamma', 'eta', 'iota', + 'phi1', 'kappa', 'lambda', 'mu', 'nu', 'omicron', 'pi', 'theta', 'rho', + 'sigma', 'tau', 'upsilon', 'omega1', 'omega', 'xi', 'psi', 'zeta', + 'braceleft', 'bar', 'braceright', 'similar', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', 'Euro', 'Upsilon1', 'minute', 'lessequal', + 'fraction', 'infinity', 'florin', 'club', 'diamond', 'heart', 'spade', + 'arrowboth', 'arrowleft', 'arrowup', 'arrowright', 'arrowdown', 'degree', + 'plusminus', 'second', 'greaterequal', 'multiply', 'proportional', + 'partialdiff', 'bullet', 'divide', 'notequal', 'equivalence', + 'approxequal', 'ellipsis', 'arrowvertex', 'arrowhorizex', 'carriagereturn', + 'aleph', 'Ifraktur', 'Rfraktur', 'weierstrass', 'circlemultiply', + 'circleplus', 'emptyset', 'intersection', 'union', 'propersuperset', + 'reflexsuperset', 'notsubset', 'propersubset', 'reflexsubset', 'element', + 'notelement', 'angle', 'gradient', 'registerserif', 'copyrightserif', + 'trademarkserif', 'product', 'radical', 'dotmath', 'logicalnot', + 'logicaland', 'logicalor', 'arrowdblboth', 'arrowdblleft', 'arrowdblup', + 'arrowdblright', 'arrowdbldown', 'lozenge', 'angleleft', 'registersans', + 'copyrightsans', 'trademarksans', 'summation', 'parenlefttp', + 'parenleftex', 'parenleftbt', 'bracketlefttp', 'bracketleftex', + 'bracketleftbt', 'bracelefttp', 'braceleftmid', 'braceleftbt', 'braceex', + '', 'angleright', 'integral', 'integraltp', 'integralex', 'integralbt', + 'parenrighttp', 'parenrightex', 'parenrightbt', 'bracketrighttp', + 'bracketrightex', 'bracketrightbt', 'bracerighttp', 'bracerightmid', + 'bracerightbt'], + ZapfDingbatsEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', + 'space', 'a1', 'a2', 'a202', 'a3', 'a4', 'a5', 'a119', 'a118', 'a117', + 'a11', 'a12', 'a13', 'a14', 'a15', 'a16', 'a105', 'a17', 'a18', 'a19', + 'a20', 'a21', 'a22', 'a23', 'a24', 'a25', 'a26', 'a27', 'a28', 'a6', 'a7', + 'a8', 'a9', 'a10', 'a29', 'a30', 'a31', 'a32', 'a33', 'a34', 'a35', 'a36', + 'a37', 'a38', 'a39', 'a40', 'a41', 'a42', 'a43', 'a44', 'a45', 'a46', + 'a47', 'a48', 'a49', 'a50', 'a51', 'a52', 'a53', 'a54', 'a55', 'a56', + 'a57', 'a58', 'a59', 'a60', 'a61', 'a62', 'a63', 'a64', 'a65', 'a66', + 'a67', 'a68', 'a69', 'a70', 'a71', 'a72', 'a73', 'a74', 'a203', 'a75', + 'a204', 'a76', 'a77', 'a78', 'a79', 'a81', 'a82', 'a83', 'a84', 'a97', + 'a98', 'a99', 'a100', '', 'a89', 'a90', 'a93', 'a94', 'a91', 'a92', 'a205', + 'a85', 'a206', 'a86', 'a87', 'a88', 'a95', 'a96', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', 'a101', 'a102', 'a103', + 'a104', 'a106', 'a107', 'a108', 'a112', 'a111', 'a110', 'a109', 'a120', + 'a121', 'a122', 'a123', 'a124', 'a125', 'a126', 'a127', 'a128', 'a129', + 'a130', 'a131', 'a132', 'a133', 'a134', 'a135', 'a136', 'a137', 'a138', + 'a139', 'a140', 'a141', 'a142', 'a143', 'a144', 'a145', 'a146', 'a147', + 'a148', 'a149', 'a150', 'a151', 'a152', 'a153', 'a154', 'a155', 'a156', + 'a157', 'a158', 'a159', 'a160', 'a161', 'a163', 'a164', 'a196', 'a165', + 'a192', 'a166', 'a167', 'a168', 'a169', 'a170', 'a171', 'a172', 'a173', + 'a162', 'a174', 'a175', 'a176', 'a177', 'a178', 'a179', 'a193', 'a180', + 'a199', 'a181', 'a200', 'a182', '', 'a201', 'a183', 'a184', 'a197', 'a185', + 'a194', 'a198', 'a186', 'a195', 'a187', 'a188', 'a189', 'a190', 'a191'] +}; + +/** + * Hold a map of decoded fonts and of the standard fourteen Type1 + * fonts and their acronyms. + */ +var stdFontMap = { + 'ArialNarrow': 'Helvetica', + 'ArialNarrow-Bold': 'Helvetica-Bold', + 'ArialNarrow-BoldItalic': 'Helvetica-BoldOblique', + 'ArialNarrow-Italic': 'Helvetica-Oblique', + 'ArialBlack': 'Helvetica', + 'ArialBlack-Bold': 'Helvetica-Bold', + 'ArialBlack-BoldItalic': 'Helvetica-BoldOblique', + 'ArialBlack-Italic': 'Helvetica-Oblique', + 'Arial': 'Helvetica', + 'Arial-Bold': 'Helvetica-Bold', + 'Arial-BoldItalic': 'Helvetica-BoldOblique', + 'Arial-Italic': 'Helvetica-Oblique', + 'Arial-BoldItalicMT': 'Helvetica-BoldOblique', + 'Arial-BoldMT': 'Helvetica-Bold', + 'Arial-ItalicMT': 'Helvetica-Oblique', + 'ArialMT': 'Helvetica', + 'Courier-Bold': 'Courier-Bold', + 'Courier-BoldItalic': 'Courier-BoldOblique', + 'Courier-Italic': 'Courier-Oblique', + 'CourierNew': 'Courier', + 'CourierNew-Bold': 'Courier-Bold', + 'CourierNew-BoldItalic': 'Courier-BoldOblique', + 'CourierNew-Italic': 'Courier-Oblique', + 'CourierNewPS-BoldItalicMT': 'Courier-BoldOblique', + 'CourierNewPS-BoldMT': 'Courier-Bold', + 'CourierNewPS-ItalicMT': 'Courier-Oblique', + 'CourierNewPSMT': 'Courier', + 'Helvetica': 'Helvetica', + 'Helvetica-Bold': 'Helvetica-Bold', + 'Helvetica-BoldItalic': 'Helvetica-BoldOblique', + 'Helvetica-BoldOblique': 'Helvetica-BoldOblique', + 'Helvetica-Italic': 'Helvetica-Oblique', + 'Helvetica-Oblique':'Helvetica-Oblique', + 'Symbol-Bold': 'Symbol', + 'Symbol-BoldItalic': 'Symbol', + 'Symbol-Italic': 'Symbol', + 'TimesNewRoman': 'Times-Roman', + 'TimesNewRoman-Bold': 'Times-Bold', + 'TimesNewRoman-BoldItalic': 'Times-BoldItalic', + 'TimesNewRoman-Italic': 'Times-Italic', + 'TimesNewRomanPS': 'Times-Roman', + 'TimesNewRomanPS-Bold': 'Times-Bold', + 'TimesNewRomanPS-BoldItalic': 'Times-BoldItalic', + 'TimesNewRomanPS-BoldItalicMT': 'Times-BoldItalic', + 'TimesNewRomanPS-BoldMT': 'Times-Bold', + 'TimesNewRomanPS-Italic': 'Times-Italic', + 'TimesNewRomanPS-ItalicMT': 'Times-Italic', + 'TimesNewRomanPSMT': 'Times-Roman', + 'TimesNewRomanPSMT-Bold': 'Times-Bold', + 'TimesNewRomanPSMT-BoldItalic': 'Times-BoldItalic', + 'TimesNewRomanPSMT-Italic': 'Times-Italic' +}; + +/** + * Holds the map of the non-standard fonts that might be included as a standard + * fonts without glyph data. + */ +var nonStdFontMap = { + 'CenturyGothic': 'Helvetica', + 'CenturyGothic-Bold': 'Helvetica-Bold', + 'CenturyGothic-BoldItalic': 'Helvetica-BoldOblique', + 'CenturyGothic-Italic': 'Helvetica-Oblique', + 'ComicSansMS': 'Comic Sans MS', + 'ComicSansMS-Bold': 'Comic Sans MS-Bold', + 'ComicSansMS-BoldItalic': 'Comic Sans MS-BoldItalic', + 'ComicSansMS-Italic': 'Comic Sans MS-Italic', + 'LucidaConsole': 'Courier', + 'LucidaConsole-Bold': 'Courier-Bold', + 'LucidaConsole-BoldItalic': 'Courier-BoldOblique', + 'LucidaConsole-Italic': 'Courier-Oblique', + 'MS-Gothic': 'MS Gothic', + 'MS-Gothic-Bold': 'MS Gothic-Bold', + 'MS-Gothic-BoldItalic': 'MS Gothic-BoldItalic', + 'MS-Gothic-Italic': 'MS Gothic-Italic', + 'MS-Mincho': 'MS Mincho', + 'MS-Mincho-Bold': 'MS Mincho-Bold', + 'MS-Mincho-BoldItalic': 'MS Mincho-BoldItalic', + 'MS-Mincho-Italic': 'MS Mincho-Italic', + 'MS-PGothic': 'MS PGothic', + 'MS-PGothic-Bold': 'MS PGothic-Bold', + 'MS-PGothic-BoldItalic': 'MS PGothic-BoldItalic', + 'MS-PGothic-Italic': 'MS PGothic-Italic', + 'MS-PMincho': 'MS PMincho', + 'MS-PMincho-Bold': 'MS PMincho-Bold', + 'MS-PMincho-BoldItalic': 'MS PMincho-BoldItalic', + 'MS-PMincho-Italic': 'MS PMincho-Italic', + 'Wingdings': 'ZapfDingbats' +}; + +var serifFonts = { + 'Adobe Jenson': true, 'Adobe Text': true, 'Albertus': true, + 'Aldus': true, 'Alexandria': true, 'Algerian': true, + 'American Typewriter': true, 'Antiqua': true, 'Apex': true, + 'Arno': true, 'Aster': true, 'Aurora': true, + 'Baskerville': true, 'Bell': true, 'Bembo': true, + 'Bembo Schoolbook': true, 'Benguiat': true, 'Berkeley Old Style': true, + 'Bernhard Modern': true, 'Berthold City': true, 'Bodoni': true, + 'Bauer Bodoni': true, 'Book Antiqua': true, 'Bookman': true, + 'Bordeaux Roman': true, 'Californian FB': true, 'Calisto': true, + 'Calvert': true, 'Capitals': true, 'Cambria': true, + 'Cartier': true, 'Caslon': true, 'Catull': true, + 'Centaur': true, 'Century Old Style': true, 'Century Schoolbook': true, + 'Chaparral': true, 'Charis SIL': true, 'Cheltenham': true, + 'Cholla Slab': true, 'Clarendon': true, 'Clearface': true, + 'Cochin': true, 'Colonna': true, 'Computer Modern': true, + 'Concrete Roman': true, 'Constantia': true, 'Cooper Black': true, + 'Corona': true, 'Ecotype': true, 'Egyptienne': true, + 'Elephant': true, 'Excelsior': true, 'Fairfield': true, + 'FF Scala': true, 'Folkard': true, 'Footlight': true, + 'FreeSerif': true, 'Friz Quadrata': true, 'Garamond': true, + 'Gentium': true, 'Georgia': true, 'Gloucester': true, + 'Goudy Old Style': true, 'Goudy Schoolbook': true, 'Goudy Pro Font': true, + 'Granjon': true, 'Guardian Egyptian': true, 'Heather': true, + 'Hercules': true, 'High Tower Text': true, 'Hiroshige': true, + 'Hoefler Text': true, 'Humana Serif': true, 'Imprint': true, + 'Ionic No. 5': true, 'Janson': true, 'Joanna': true, + 'Korinna': true, 'Lexicon': true, 'Liberation Serif': true, + 'Linux Libertine': true, 'Literaturnaya': true, 'Lucida': true, + 'Lucida Bright': true, 'Melior': true, 'Memphis': true, + 'Miller': true, 'Minion': true, 'Modern': true, + 'Mona Lisa': true, 'Mrs Eaves': true, 'MS Serif': true, + 'Museo Slab': true, 'New York': true, 'Nimbus Roman': true, + 'NPS Rawlinson Roadway': true, 'Palatino': true, 'Perpetua': true, + 'Plantin': true, 'Plantin Schoolbook': true, 'Playbill': true, + 'Poor Richard': true, 'Rawlinson Roadway': true, 'Renault': true, + 'Requiem': true, 'Rockwell': true, 'Roman': true, + 'Rotis Serif': true, 'Sabon': true, 'Scala': true, + 'Seagull': true, 'Sistina': true, 'Souvenir': true, + 'STIX': true, 'Stone Informal': true, 'Stone Serif': true, + 'Sylfaen': true, 'Times': true, 'Trajan': true, + 'Trinité': true, 'Trump Mediaeval': true, 'Utopia': true, + 'Vale Type': true, 'Bitstream Vera': true, 'Vera Serif': true, + 'Versailles': true, 'Wanted': true, 'Weiss': true, + 'Wide Latin': true, 'Windsor': true, 'XITS': true +}; + +var symbolsFonts = { + 'Dingbats': true, 'Symbol': true, 'ZapfDingbats': true +}; + +// Glyph map for well-known standard fonts. Sometimes Ghostscript uses CID fonts +// but does not embed the CID to GID mapping. The mapping is incomplete for all +// glyphs, but common for some set of the standard fonts. +var GlyphMapForStandardFonts = { + '2': 10, '3': 32, '4': 33, '5': 34, '6': 35, '7': 36, '8': 37, '9': 38, + '10': 39, '11': 40, '12': 41, '13': 42, '14': 43, '15': 44, '16': 45, + '17': 46, '18': 47, '19': 48, '20': 49, '21': 50, '22': 51, '23': 52, + '24': 53, '25': 54, '26': 55, '27': 56, '28': 57, '29': 58, '30': 894, + '31': 60, '32': 61, '33': 62, '34': 63, '35': 64, '36': 65, '37': 66, + '38': 67, '39': 68, '40': 69, '41': 70, '42': 71, '43': 72, '44': 73, + '45': 74, '46': 75, '47': 76, '48': 77, '49': 78, '50': 79, '51': 80, + '52': 81, '53': 82, '54': 83, '55': 84, '56': 85, '57': 86, '58': 87, + '59': 88, '60': 89, '61': 90, '62': 91, '63': 92, '64': 93, '65': 94, + '66': 95, '67': 96, '68': 97, '69': 98, '70': 99, '71': 100, '72': 101, + '73': 102, '74': 103, '75': 104, '76': 105, '77': 106, '78': 107, '79': 108, + '80': 109, '81': 110, '82': 111, '83': 112, '84': 113, '85': 114, '86': 115, + '87': 116, '88': 117, '89': 118, '90': 119, '91': 120, '92': 121, '93': 122, + '94': 123, '95': 124, '96': 125, '97': 126, '98': 196, '99': 197, '100': 199, + '101': 201, '102': 209, '103': 214, '104': 220, '105': 225, '106': 224, + '107': 226, '108': 228, '109': 227, '110': 229, '111': 231, '112': 233, + '113': 232, '114': 234, '115': 235, '116': 237, '117': 236, '118': 238, + '119': 239, '120': 241, '121': 243, '122': 242, '123': 244, '124': 246, + '125': 245, '126': 250, '127': 249, '128': 251, '129': 252, '130': 8224, + '131': 176, '132': 162, '133': 163, '134': 167, '135': 8226, '136': 182, + '137': 223, '138': 174, '139': 169, '140': 8482, '141': 180, '142': 168, + '143': 8800, '144': 198, '145': 216, '146': 8734, '147': 177, '148': 8804, + '149': 8805, '150': 165, '151': 181, '152': 8706, '153': 8721, '154': 8719, + '156': 8747, '157': 170, '158': 186, '159': 8486, '160': 230, '161': 248, + '162': 191, '163': 161, '164': 172, '165': 8730, '166': 402, '167': 8776, + '168': 8710, '169': 171, '170': 187, '171': 8230, '210': 218, '223': 711, + '224': 321, '225': 322, '227': 353, '229': 382, '234': 253, '252': 263, + '253': 268, '254': 269, '258': 258, '260': 260, '261': 261, '265': 280, + '266': 281, '268': 283, '269': 313, '275': 323, '276': 324, '278': 328, + '284': 345, '285': 346, '286': 347, '292': 367, '295': 377, '296': 378, + '298': 380, '305': 963, + '306': 964, '307': 966, '308': 8215, '309': 8252, '310': 8319, '311': 8359, + '312': 8592, '313': 8593, '337': 9552, '493': 1039, '494': 1040, '705': 1524, + '706': 8362, '710': 64288, '711': 64298, '759': 1617, '761': 1776, + '763': 1778, '775': 1652, '777': 1764, '778': 1780, '779': 1781, '780': 1782, + '782': 771, '783': 64726, '786': 8363, '788': 8532, '790': 768, '791': 769, + '792': 768, '795': 803, '797': 64336, '798': 64337, '799': 64342, + '800': 64343, '801': 64344, '802': 64345, '803': 64362, '804': 64363, + '805': 64364, '2424': 7821, '2425': 7822, '2426': 7823, '2427': 7824, + '2428': 7825, '2429': 7826, '2430': 7827, '2433': 7682, '2678': 8045, + '2679': 8046, '2830': 1552, '2838': 686, '2840': 751, '2842': 753, + '2843': 754, '2844': 755, '2846': 757, '2856': 767, '2857': 848, '2858': 849, + '2862': 853, '2863': 854, '2864': 855, '2865': 861, '2866': 862, '2906': 7460, + '2908': 7462, '2909': 7463, '2910': 7464, '2912': 7466, '2913': 7467, + '2914': 7468, '2916': 7470, '2917': 7471, '2918': 7472, '2920': 7474, + '2921': 7475, '2922': 7476, '2924': 7478, '2925': 7479, '2926': 7480, + '2928': 7482, '2929': 7483, '2930': 7484, '2932': 7486, '2933': 7487, + '2934': 7488, '2936': 7490, '2937': 7491, '2938': 7492, '2940': 7494, + '2941': 7495, '2942': 7496, '2944': 7498, '2946': 7500, '2948': 7502, + '2950': 7504, '2951': 7505, '2952': 7506, '2954': 7508, '2955': 7509, + '2956': 7510, '2958': 7512, '2959': 7513, '2960': 7514, '2962': 7516, + '2963': 7517, '2964': 7518, '2966': 7520, '2967': 7521, '2968': 7522, + '2970': 7524, '2971': 7525, '2972': 7526, '2974': 7528, '2975': 7529, + '2976': 7530, '2978': 1537, '2979': 1538, '2980': 1539, '2982': 1549, + '2983': 1551, '2984': 1552, '2986': 1554, '2987': 1555, '2988': 1556, + '2990': 1623, '2991': 1624, '2995': 1775, '2999': 1791, '3002': 64290, + '3003': 64291, '3004': 64292, '3006': 64294, '3007': 64295, '3008': 64296, + '3011': 1900, '3014': 8223, '3015': 8244, '3017': 7532, '3018': 7533, + '3019': 7534, '3075': 7590, '3076': 7591, '3079': 7594, '3080': 7595, + '3083': 7598, '3084': 7599, '3087': 7602, '3088': 7603, '3091': 7606, + '3092': 7607, '3095': 7610, '3096': 7611, '3099': 7614, '3100': 7615, + '3103': 7618, '3104': 7619, '3107': 8337, '3108': 8338, '3116': 1884, + '3119': 1885, '3120': 1885, '3123': 1886, '3124': 1886, '3127': 1887, + '3128': 1887, '3131': 1888, '3132': 1888, '3135': 1889, '3136': 1889, + '3139': 1890, '3140': 1890, '3143': 1891, '3144': 1891, '3147': 1892, + '3148': 1892, '3153': 580, '3154': 581, '3157': 584, '3158': 585, '3161': 588, + '3162': 589, '3165': 891, '3166': 892, '3169': 1274, '3170': 1275, + '3173': 1278, '3174': 1279, '3181': 7622, '3182': 7623, '3282': 11799, + '3316': 578, '3379': 42785, '3393': 1159, '3416': 8377 +}; + +// Some characters, e.g. copyrightserif, are mapped to the private use area and +// might not be displayed using standard fonts. Mapping/hacking well-known chars +// to the similar equivalents in the normal characters range. +var SpecialPUASymbols = { + '63721': 0x00A9, // copyrightsans (0xF8E9) => copyright + '63193': 0x00A9, // copyrightserif (0xF6D9) => copyright + '63720': 0x00AE, // registersans (0xF8E8) => registered + '63194': 0x00AE, // registerserif (0xF6DA) => registered + '63722': 0x2122, // trademarksans (0xF8EA) => trademark + '63195': 0x2122, // trademarkserif (0xF6DB) => trademark + '63729': 0x23A7, // bracelefttp (0xF8F1) + '63730': 0x23A8, // braceleftmid (0xF8F2) + '63731': 0x23A9, // braceleftbt (0xF8F3) + '63740': 0x23AB, // bracerighttp (0xF8FC) + '63741': 0x23AC, // bracerightmid (0xF8FD) + '63742': 0x23AD, // bracerightbt (0xF8FE) + '63726': 0x23A1, // bracketlefttp (0xF8EE) + '63727': 0x23A2, // bracketleftex (0xF8EF) + '63728': 0x23A3, // bracketleftbt (0xF8F0) + '63737': 0x23A4, // bracketrighttp (0xF8F9) + '63738': 0x23A5, // bracketrightex (0xF8FA) + '63739': 0x23A6, // bracketrightbt (0xF8FB) + '63723': 0x239B, // parenlefttp (0xF8EB) + '63724': 0x239C, // parenleftex (0xF8EC) + '63725': 0x239D, // parenleftbt (0xF8ED) + '63734': 0x239E, // parenrighttp (0xF8F6) + '63735': 0x239F, // parenrightex (0xF8F7) + '63736': 0x23A0, // parenrightbt (0xF8F8) +}; +function mapSpecialUnicodeValues(code) { + if (code >= 0xFFF0 && code <= 0xFFFF) { // Specials unicode block. + return 0; + } else if (code >= 0xF600 && code <= 0xF8FF) { + return (SpecialPUASymbols[code] || code); + } + return code; +} + +var UnicodeRanges = [ + { 'begin': 0x0000, 'end': 0x007F }, // Basic Latin + { 'begin': 0x0080, 'end': 0x00FF }, // Latin-1 Supplement + { 'begin': 0x0100, 'end': 0x017F }, // Latin Extended-A + { 'begin': 0x0180, 'end': 0x024F }, // Latin Extended-B + { 'begin': 0x0250, 'end': 0x02AF }, // IPA Extensions + { 'begin': 0x02B0, 'end': 0x02FF }, // Spacing Modifier Letters + { 'begin': 0x0300, 'end': 0x036F }, // Combining Diacritical Marks + { 'begin': 0x0370, 'end': 0x03FF }, // Greek and Coptic + { 'begin': 0x2C80, 'end': 0x2CFF }, // Coptic + { 'begin': 0x0400, 'end': 0x04FF }, // Cyrillic + { 'begin': 0x0530, 'end': 0x058F }, // Armenian + { 'begin': 0x0590, 'end': 0x05FF }, // Hebrew + { 'begin': 0xA500, 'end': 0xA63F }, // Vai + { 'begin': 0x0600, 'end': 0x06FF }, // Arabic + { 'begin': 0x07C0, 'end': 0x07FF }, // NKo + { 'begin': 0x0900, 'end': 0x097F }, // Devanagari + { 'begin': 0x0980, 'end': 0x09FF }, // Bengali + { 'begin': 0x0A00, 'end': 0x0A7F }, // Gurmukhi + { 'begin': 0x0A80, 'end': 0x0AFF }, // Gujarati + { 'begin': 0x0B00, 'end': 0x0B7F }, // Oriya + { 'begin': 0x0B80, 'end': 0x0BFF }, // Tamil + { 'begin': 0x0C00, 'end': 0x0C7F }, // Telugu + { 'begin': 0x0C80, 'end': 0x0CFF }, // Kannada + { 'begin': 0x0D00, 'end': 0x0D7F }, // Malayalam + { 'begin': 0x0E00, 'end': 0x0E7F }, // Thai + { 'begin': 0x0E80, 'end': 0x0EFF }, // Lao + { 'begin': 0x10A0, 'end': 0x10FF }, // Georgian + { 'begin': 0x1B00, 'end': 0x1B7F }, // Balinese + { 'begin': 0x1100, 'end': 0x11FF }, // Hangul Jamo + { 'begin': 0x1E00, 'end': 0x1EFF }, // Latin Extended Additional + { 'begin': 0x1F00, 'end': 0x1FFF }, // Greek Extended + { 'begin': 0x2000, 'end': 0x206F }, // General Punctuation + { 'begin': 0x2070, 'end': 0x209F }, // Superscripts And Subscripts + { 'begin': 0x20A0, 'end': 0x20CF }, // Currency Symbol + { 'begin': 0x20D0, 'end': 0x20FF }, // Combining Diacritical Marks For Symbols + { 'begin': 0x2100, 'end': 0x214F }, // Letterlike Symbols + { 'begin': 0x2150, 'end': 0x218F }, // Number Forms + { 'begin': 0x2190, 'end': 0x21FF }, // Arrows + { 'begin': 0x2200, 'end': 0x22FF }, // Mathematical Operators + { 'begin': 0x2300, 'end': 0x23FF }, // Miscellaneous Technical + { 'begin': 0x2400, 'end': 0x243F }, // Control Pictures + { 'begin': 0x2440, 'end': 0x245F }, // Optical Character Recognition + { 'begin': 0x2460, 'end': 0x24FF }, // Enclosed Alphanumerics + { 'begin': 0x2500, 'end': 0x257F }, // Box Drawing + { 'begin': 0x2580, 'end': 0x259F }, // Block Elements + { 'begin': 0x25A0, 'end': 0x25FF }, // Geometric Shapes + { 'begin': 0x2600, 'end': 0x26FF }, // Miscellaneous Symbols + { 'begin': 0x2700, 'end': 0x27BF }, // Dingbats + { 'begin': 0x3000, 'end': 0x303F }, // CJK Symbols And Punctuation + { 'begin': 0x3040, 'end': 0x309F }, // Hiragana + { 'begin': 0x30A0, 'end': 0x30FF }, // Katakana + { 'begin': 0x3100, 'end': 0x312F }, // Bopomofo + { 'begin': 0x3130, 'end': 0x318F }, // Hangul Compatibility Jamo + { 'begin': 0xA840, 'end': 0xA87F }, // Phags-pa + { 'begin': 0x3200, 'end': 0x32FF }, // Enclosed CJK Letters And Months + { 'begin': 0x3300, 'end': 0x33FF }, // CJK Compatibility + { 'begin': 0xAC00, 'end': 0xD7AF }, // Hangul Syllables + { 'begin': 0xD800, 'end': 0xDFFF }, // Non-Plane 0 * + { 'begin': 0x10900, 'end': 0x1091F }, // Phoenicia + { 'begin': 0x4E00, 'end': 0x9FFF }, // CJK Unified Ideographs + { 'begin': 0xE000, 'end': 0xF8FF }, // Private Use Area (plane 0) + { 'begin': 0x31C0, 'end': 0x31EF }, // CJK Strokes + { 'begin': 0xFB00, 'end': 0xFB4F }, // Alphabetic Presentation Forms + { 'begin': 0xFB50, 'end': 0xFDFF }, // Arabic Presentation Forms-A + { 'begin': 0xFE20, 'end': 0xFE2F }, // Combining Half Marks + { 'begin': 0xFE10, 'end': 0xFE1F }, // Vertical Forms + { 'begin': 0xFE50, 'end': 0xFE6F }, // Small Form Variants + { 'begin': 0xFE70, 'end': 0xFEFF }, // Arabic Presentation Forms-B + { 'begin': 0xFF00, 'end': 0xFFEF }, // Halfwidth And Fullwidth Forms + { 'begin': 0xFFF0, 'end': 0xFFFF }, // Specials + { 'begin': 0x0F00, 'end': 0x0FFF }, // Tibetan + { 'begin': 0x0700, 'end': 0x074F }, // Syriac + { 'begin': 0x0780, 'end': 0x07BF }, // Thaana + { 'begin': 0x0D80, 'end': 0x0DFF }, // Sinhala + { 'begin': 0x1000, 'end': 0x109F }, // Myanmar + { 'begin': 0x1200, 'end': 0x137F }, // Ethiopic + { 'begin': 0x13A0, 'end': 0x13FF }, // Cherokee + { 'begin': 0x1400, 'end': 0x167F }, // Unified Canadian Aboriginal Syllabics + { 'begin': 0x1680, 'end': 0x169F }, // Ogham + { 'begin': 0x16A0, 'end': 0x16FF }, // Runic + { 'begin': 0x1780, 'end': 0x17FF }, // Khmer + { 'begin': 0x1800, 'end': 0x18AF }, // Mongolian + { 'begin': 0x2800, 'end': 0x28FF }, // Braille Patterns + { 'begin': 0xA000, 'end': 0xA48F }, // Yi Syllables + { 'begin': 0x1700, 'end': 0x171F }, // Tagalog + { 'begin': 0x10300, 'end': 0x1032F }, // Old Italic + { 'begin': 0x10330, 'end': 0x1034F }, // Gothic + { 'begin': 0x10400, 'end': 0x1044F }, // Deseret + { 'begin': 0x1D000, 'end': 0x1D0FF }, // Byzantine Musical Symbols + { 'begin': 0x1D400, 'end': 0x1D7FF }, // Mathematical Alphanumeric Symbols + { 'begin': 0xFF000, 'end': 0xFFFFD }, // Private Use (plane 15) + { 'begin': 0xFE00, 'end': 0xFE0F }, // Variation Selectors + { 'begin': 0xE0000, 'end': 0xE007F }, // Tags + { 'begin': 0x1900, 'end': 0x194F }, // Limbu + { 'begin': 0x1950, 'end': 0x197F }, // Tai Le + { 'begin': 0x1980, 'end': 0x19DF }, // New Tai Lue + { 'begin': 0x1A00, 'end': 0x1A1F }, // Buginese + { 'begin': 0x2C00, 'end': 0x2C5F }, // Glagolitic + { 'begin': 0x2D30, 'end': 0x2D7F }, // Tifinagh + { 'begin': 0x4DC0, 'end': 0x4DFF }, // Yijing Hexagram Symbols + { 'begin': 0xA800, 'end': 0xA82F }, // Syloti Nagri + { 'begin': 0x10000, 'end': 0x1007F }, // Linear B Syllabary + { 'begin': 0x10140, 'end': 0x1018F }, // Ancient Greek Numbers + { 'begin': 0x10380, 'end': 0x1039F }, // Ugaritic + { 'begin': 0x103A0, 'end': 0x103DF }, // Old Persian + { 'begin': 0x10450, 'end': 0x1047F }, // Shavian + { 'begin': 0x10480, 'end': 0x104AF }, // Osmanya + { 'begin': 0x10800, 'end': 0x1083F }, // Cypriot Syllabary + { 'begin': 0x10A00, 'end': 0x10A5F }, // Kharoshthi + { 'begin': 0x1D300, 'end': 0x1D35F }, // Tai Xuan Jing Symbols + { 'begin': 0x12000, 'end': 0x123FF }, // Cuneiform + { 'begin': 0x1D360, 'end': 0x1D37F }, // Counting Rod Numerals + { 'begin': 0x1B80, 'end': 0x1BBF }, // Sundanese + { 'begin': 0x1C00, 'end': 0x1C4F }, // Lepcha + { 'begin': 0x1C50, 'end': 0x1C7F }, // Ol Chiki + { 'begin': 0xA880, 'end': 0xA8DF }, // Saurashtra + { 'begin': 0xA900, 'end': 0xA92F }, // Kayah Li + { 'begin': 0xA930, 'end': 0xA95F }, // Rejang + { 'begin': 0xAA00, 'end': 0xAA5F }, // Cham + { 'begin': 0x10190, 'end': 0x101CF }, // Ancient Symbols + { 'begin': 0x101D0, 'end': 0x101FF }, // Phaistos Disc + { 'begin': 0x102A0, 'end': 0x102DF }, // Carian + { 'begin': 0x1F030, 'end': 0x1F09F } // Domino Tiles +]; + +var MacStandardGlyphOrdering = [ + '.notdef', '.null', 'nonmarkingreturn', 'space', 'exclam', 'quotedbl', + 'numbersign', 'dollar', 'percent', 'ampersand', 'quotesingle', 'parenleft', + 'parenright', 'asterisk', 'plus', 'comma', 'hyphen', 'period', 'slash', + 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', + 'nine', 'colon', 'semicolon', 'less', 'equal', 'greater', 'question', 'at', + 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', + 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'bracketleft', + 'backslash', 'bracketright', 'asciicircum', 'underscore', 'grave', 'a', 'b', + 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', + 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'braceleft', 'bar', 'braceright', + 'asciitilde', 'Adieresis', 'Aring', 'Ccedilla', 'Eacute', 'Ntilde', + 'Odieresis', 'Udieresis', 'aacute', 'agrave', 'acircumflex', 'adieresis', + 'atilde', 'aring', 'ccedilla', 'eacute', 'egrave', 'ecircumflex', 'edieresis', + 'iacute', 'igrave', 'icircumflex', 'idieresis', 'ntilde', 'oacute', 'ograve', + 'ocircumflex', 'odieresis', 'otilde', 'uacute', 'ugrave', 'ucircumflex', + 'udieresis', 'dagger', 'degree', 'cent', 'sterling', 'section', 'bullet', + 'paragraph', 'germandbls', 'registered', 'copyright', 'trademark', 'acute', + 'dieresis', 'notequal', 'AE', 'Oslash', 'infinity', 'plusminus', 'lessequal', + 'greaterequal', 'yen', 'mu', 'partialdiff', 'summation', 'product', 'pi', + 'integral', 'ordfeminine', 'ordmasculine', 'Omega', 'ae', 'oslash', + 'questiondown', 'exclamdown', 'logicalnot', 'radical', 'florin', + 'approxequal', 'Delta', 'guillemotleft', 'guillemotright', 'ellipsis', + 'nonbreakingspace', 'Agrave', 'Atilde', 'Otilde', 'OE', 'oe', 'endash', + 'emdash', 'quotedblleft', 'quotedblright', 'quoteleft', 'quoteright', + 'divide', 'lozenge', 'ydieresis', 'Ydieresis', 'fraction', 'currency', + 'guilsinglleft', 'guilsinglright', 'fi', 'fl', 'daggerdbl', 'periodcentered', + 'quotesinglbase', 'quotedblbase', 'perthousand', 'Acircumflex', + 'Ecircumflex', 'Aacute', 'Edieresis', 'Egrave', 'Iacute', 'Icircumflex', + 'Idieresis', 'Igrave', 'Oacute', 'Ocircumflex', 'apple', 'Ograve', 'Uacute', + 'Ucircumflex', 'Ugrave', 'dotlessi', 'circumflex', 'tilde', 'macron', + 'breve', 'dotaccent', 'ring', 'cedilla', 'hungarumlaut', 'ogonek', 'caron', + 'Lslash', 'lslash', 'Scaron', 'scaron', 'Zcaron', 'zcaron', 'brokenbar', + 'Eth', 'eth', 'Yacute', 'yacute', 'Thorn', 'thorn', 'minus', 'multiply', + 'onesuperior', 'twosuperior', 'threesuperior', 'onehalf', 'onequarter', + 'threequarters', 'franc', 'Gbreve', 'gbreve', 'Idotaccent', 'Scedilla', + 'scedilla', 'Cacute', 'cacute', 'Ccaron', 'ccaron', 'dcroat']; + +function getUnicodeRangeFor(value) { + for (var i = 0, ii = UnicodeRanges.length; i < ii; i++) { + var range = UnicodeRanges[i]; + if (value >= range.begin && value < range.end) { + return i; + } + } + return -1; +} + +function isRTLRangeFor(value) { + var range = UnicodeRanges[13]; + if (value >= range.begin && value < range.end) { + return true; + } + range = UnicodeRanges[11]; + if (value >= range.begin && value < range.end) { + return true; + } + return false; +} + +// The normalization table is obtained by filtering the Unicode characters +// database with entries. +var NormalizedUnicodes = { + '\u00A8': '\u0020\u0308', + '\u00AF': '\u0020\u0304', + '\u00B4': '\u0020\u0301', + '\u00B5': '\u03BC', + '\u00B8': '\u0020\u0327', + '\u0132': '\u0049\u004A', + '\u0133': '\u0069\u006A', + '\u013F': '\u004C\u00B7', + '\u0140': '\u006C\u00B7', + '\u0149': '\u02BC\u006E', + '\u017F': '\u0073', + '\u01C4': '\u0044\u017D', + '\u01C5': '\u0044\u017E', + '\u01C6': '\u0064\u017E', + '\u01C7': '\u004C\u004A', + '\u01C8': '\u004C\u006A', + '\u01C9': '\u006C\u006A', + '\u01CA': '\u004E\u004A', + '\u01CB': '\u004E\u006A', + '\u01CC': '\u006E\u006A', + '\u01F1': '\u0044\u005A', + '\u01F2': '\u0044\u007A', + '\u01F3': '\u0064\u007A', + '\u02D8': '\u0020\u0306', + '\u02D9': '\u0020\u0307', + '\u02DA': '\u0020\u030A', + '\u02DB': '\u0020\u0328', + '\u02DC': '\u0020\u0303', + '\u02DD': '\u0020\u030B', + '\u037A': '\u0020\u0345', + '\u0384': '\u0020\u0301', + '\u03D0': '\u03B2', + '\u03D1': '\u03B8', + '\u03D2': '\u03A5', + '\u03D5': '\u03C6', + '\u03D6': '\u03C0', + '\u03F0': '\u03BA', + '\u03F1': '\u03C1', + '\u03F2': '\u03C2', + '\u03F4': '\u0398', + '\u03F5': '\u03B5', + '\u03F9': '\u03A3', + '\u0587': '\u0565\u0582', + '\u0675': '\u0627\u0674', + '\u0676': '\u0648\u0674', + '\u0677': '\u06C7\u0674', + '\u0678': '\u064A\u0674', + '\u0E33': '\u0E4D\u0E32', + '\u0EB3': '\u0ECD\u0EB2', + '\u0EDC': '\u0EAB\u0E99', + '\u0EDD': '\u0EAB\u0EA1', + '\u0F77': '\u0FB2\u0F81', + '\u0F79': '\u0FB3\u0F81', + '\u1E9A': '\u0061\u02BE', + '\u1FBD': '\u0020\u0313', + '\u1FBF': '\u0020\u0313', + '\u1FC0': '\u0020\u0342', + '\u1FFE': '\u0020\u0314', + '\u2002': '\u0020', + '\u2003': '\u0020', + '\u2004': '\u0020', + '\u2005': '\u0020', + '\u2006': '\u0020', + '\u2008': '\u0020', + '\u2009': '\u0020', + '\u200A': '\u0020', + '\u2017': '\u0020\u0333', + '\u2024': '\u002E', + '\u2025': '\u002E\u002E', + '\u2026': '\u002E\u002E\u002E', + '\u2033': '\u2032\u2032', + '\u2034': '\u2032\u2032\u2032', + '\u2036': '\u2035\u2035', + '\u2037': '\u2035\u2035\u2035', + '\u203C': '\u0021\u0021', + '\u203E': '\u0020\u0305', + '\u2047': '\u003F\u003F', + '\u2048': '\u003F\u0021', + '\u2049': '\u0021\u003F', + '\u2057': '\u2032\u2032\u2032\u2032', + '\u205F': '\u0020', + '\u20A8': '\u0052\u0073', + '\u2100': '\u0061\u002F\u0063', + '\u2101': '\u0061\u002F\u0073', + '\u2103': '\u00B0\u0043', + '\u2105': '\u0063\u002F\u006F', + '\u2106': '\u0063\u002F\u0075', + '\u2107': '\u0190', + '\u2109': '\u00B0\u0046', + '\u2116': '\u004E\u006F', + '\u2121': '\u0054\u0045\u004C', + '\u2135': '\u05D0', + '\u2136': '\u05D1', + '\u2137': '\u05D2', + '\u2138': '\u05D3', + '\u213B': '\u0046\u0041\u0058', + '\u2160': '\u0049', + '\u2161': '\u0049\u0049', + '\u2162': '\u0049\u0049\u0049', + '\u2163': '\u0049\u0056', + '\u2164': '\u0056', + '\u2165': '\u0056\u0049', + '\u2166': '\u0056\u0049\u0049', + '\u2167': '\u0056\u0049\u0049\u0049', + '\u2168': '\u0049\u0058', + '\u2169': '\u0058', + '\u216A': '\u0058\u0049', + '\u216B': '\u0058\u0049\u0049', + '\u216C': '\u004C', + '\u216D': '\u0043', + '\u216E': '\u0044', + '\u216F': '\u004D', + '\u2170': '\u0069', + '\u2171': '\u0069\u0069', + '\u2172': '\u0069\u0069\u0069', + '\u2173': '\u0069\u0076', + '\u2174': '\u0076', + '\u2175': '\u0076\u0069', + '\u2176': '\u0076\u0069\u0069', + '\u2177': '\u0076\u0069\u0069\u0069', + '\u2178': '\u0069\u0078', + '\u2179': '\u0078', + '\u217A': '\u0078\u0069', + '\u217B': '\u0078\u0069\u0069', + '\u217C': '\u006C', + '\u217D': '\u0063', + '\u217E': '\u0064', + '\u217F': '\u006D', + '\u222C': '\u222B\u222B', + '\u222D': '\u222B\u222B\u222B', + '\u222F': '\u222E\u222E', + '\u2230': '\u222E\u222E\u222E', + '\u2474': '\u0028\u0031\u0029', + '\u2475': '\u0028\u0032\u0029', + '\u2476': '\u0028\u0033\u0029', + '\u2477': '\u0028\u0034\u0029', + '\u2478': '\u0028\u0035\u0029', + '\u2479': '\u0028\u0036\u0029', + '\u247A': '\u0028\u0037\u0029', + '\u247B': '\u0028\u0038\u0029', + '\u247C': '\u0028\u0039\u0029', + '\u247D': '\u0028\u0031\u0030\u0029', + '\u247E': '\u0028\u0031\u0031\u0029', + '\u247F': '\u0028\u0031\u0032\u0029', + '\u2480': '\u0028\u0031\u0033\u0029', + '\u2481': '\u0028\u0031\u0034\u0029', + '\u2482': '\u0028\u0031\u0035\u0029', + '\u2483': '\u0028\u0031\u0036\u0029', + '\u2484': '\u0028\u0031\u0037\u0029', + '\u2485': '\u0028\u0031\u0038\u0029', + '\u2486': '\u0028\u0031\u0039\u0029', + '\u2487': '\u0028\u0032\u0030\u0029', + '\u2488': '\u0031\u002E', + '\u2489': '\u0032\u002E', + '\u248A': '\u0033\u002E', + '\u248B': '\u0034\u002E', + '\u248C': '\u0035\u002E', + '\u248D': '\u0036\u002E', + '\u248E': '\u0037\u002E', + '\u248F': '\u0038\u002E', + '\u2490': '\u0039\u002E', + '\u2491': '\u0031\u0030\u002E', + '\u2492': '\u0031\u0031\u002E', + '\u2493': '\u0031\u0032\u002E', + '\u2494': '\u0031\u0033\u002E', + '\u2495': '\u0031\u0034\u002E', + '\u2496': '\u0031\u0035\u002E', + '\u2497': '\u0031\u0036\u002E', + '\u2498': '\u0031\u0037\u002E', + '\u2499': '\u0031\u0038\u002E', + '\u249A': '\u0031\u0039\u002E', + '\u249B': '\u0032\u0030\u002E', + '\u249C': '\u0028\u0061\u0029', + '\u249D': '\u0028\u0062\u0029', + '\u249E': '\u0028\u0063\u0029', + '\u249F': '\u0028\u0064\u0029', + '\u24A0': '\u0028\u0065\u0029', + '\u24A1': '\u0028\u0066\u0029', + '\u24A2': '\u0028\u0067\u0029', + '\u24A3': '\u0028\u0068\u0029', + '\u24A4': '\u0028\u0069\u0029', + '\u24A5': '\u0028\u006A\u0029', + '\u24A6': '\u0028\u006B\u0029', + '\u24A7': '\u0028\u006C\u0029', + '\u24A8': '\u0028\u006D\u0029', + '\u24A9': '\u0028\u006E\u0029', + '\u24AA': '\u0028\u006F\u0029', + '\u24AB': '\u0028\u0070\u0029', + '\u24AC': '\u0028\u0071\u0029', + '\u24AD': '\u0028\u0072\u0029', + '\u24AE': '\u0028\u0073\u0029', + '\u24AF': '\u0028\u0074\u0029', + '\u24B0': '\u0028\u0075\u0029', + '\u24B1': '\u0028\u0076\u0029', + '\u24B2': '\u0028\u0077\u0029', + '\u24B3': '\u0028\u0078\u0029', + '\u24B4': '\u0028\u0079\u0029', + '\u24B5': '\u0028\u007A\u0029', + '\u2A0C': '\u222B\u222B\u222B\u222B', + '\u2A74': '\u003A\u003A\u003D', + '\u2A75': '\u003D\u003D', + '\u2A76': '\u003D\u003D\u003D', + '\u2E9F': '\u6BCD', + '\u2EF3': '\u9F9F', + '\u2F00': '\u4E00', + '\u2F01': '\u4E28', + '\u2F02': '\u4E36', + '\u2F03': '\u4E3F', + '\u2F04': '\u4E59', + '\u2F05': '\u4E85', + '\u2F06': '\u4E8C', + '\u2F07': '\u4EA0', + '\u2F08': '\u4EBA', + '\u2F09': '\u513F', + '\u2F0A': '\u5165', + '\u2F0B': '\u516B', + '\u2F0C': '\u5182', + '\u2F0D': '\u5196', + '\u2F0E': '\u51AB', + '\u2F0F': '\u51E0', + '\u2F10': '\u51F5', + '\u2F11': '\u5200', + '\u2F12': '\u529B', + '\u2F13': '\u52F9', + '\u2F14': '\u5315', + '\u2F15': '\u531A', + '\u2F16': '\u5338', + '\u2F17': '\u5341', + '\u2F18': '\u535C', + '\u2F19': '\u5369', + '\u2F1A': '\u5382', + '\u2F1B': '\u53B6', + '\u2F1C': '\u53C8', + '\u2F1D': '\u53E3', + '\u2F1E': '\u56D7', + '\u2F1F': '\u571F', + '\u2F20': '\u58EB', + '\u2F21': '\u5902', + '\u2F22': '\u590A', + '\u2F23': '\u5915', + '\u2F24': '\u5927', + '\u2F25': '\u5973', + '\u2F26': '\u5B50', + '\u2F27': '\u5B80', + '\u2F28': '\u5BF8', + '\u2F29': '\u5C0F', + '\u2F2A': '\u5C22', + '\u2F2B': '\u5C38', + '\u2F2C': '\u5C6E', + '\u2F2D': '\u5C71', + '\u2F2E': '\u5DDB', + '\u2F2F': '\u5DE5', + '\u2F30': '\u5DF1', + '\u2F31': '\u5DFE', + '\u2F32': '\u5E72', + '\u2F33': '\u5E7A', + '\u2F34': '\u5E7F', + '\u2F35': '\u5EF4', + '\u2F36': '\u5EFE', + '\u2F37': '\u5F0B', + '\u2F38': '\u5F13', + '\u2F39': '\u5F50', + '\u2F3A': '\u5F61', + '\u2F3B': '\u5F73', + '\u2F3C': '\u5FC3', + '\u2F3D': '\u6208', + '\u2F3E': '\u6236', + '\u2F3F': '\u624B', + '\u2F40': '\u652F', + '\u2F41': '\u6534', + '\u2F42': '\u6587', + '\u2F43': '\u6597', + '\u2F44': '\u65A4', + '\u2F45': '\u65B9', + '\u2F46': '\u65E0', + '\u2F47': '\u65E5', + '\u2F48': '\u66F0', + '\u2F49': '\u6708', + '\u2F4A': '\u6728', + '\u2F4B': '\u6B20', + '\u2F4C': '\u6B62', + '\u2F4D': '\u6B79', + '\u2F4E': '\u6BB3', + '\u2F4F': '\u6BCB', + '\u2F50': '\u6BD4', + '\u2F51': '\u6BDB', + '\u2F52': '\u6C0F', + '\u2F53': '\u6C14', + '\u2F54': '\u6C34', + '\u2F55': '\u706B', + '\u2F56': '\u722A', + '\u2F57': '\u7236', + '\u2F58': '\u723B', + '\u2F59': '\u723F', + '\u2F5A': '\u7247', + '\u2F5B': '\u7259', + '\u2F5C': '\u725B', + '\u2F5D': '\u72AC', + '\u2F5E': '\u7384', + '\u2F5F': '\u7389', + '\u2F60': '\u74DC', + '\u2F61': '\u74E6', + '\u2F62': '\u7518', + '\u2F63': '\u751F', + '\u2F64': '\u7528', + '\u2F65': '\u7530', + '\u2F66': '\u758B', + '\u2F67': '\u7592', + '\u2F68': '\u7676', + '\u2F69': '\u767D', + '\u2F6A': '\u76AE', + '\u2F6B': '\u76BF', + '\u2F6C': '\u76EE', + '\u2F6D': '\u77DB', + '\u2F6E': '\u77E2', + '\u2F6F': '\u77F3', + '\u2F70': '\u793A', + '\u2F71': '\u79B8', + '\u2F72': '\u79BE', + '\u2F73': '\u7A74', + '\u2F74': '\u7ACB', + '\u2F75': '\u7AF9', + '\u2F76': '\u7C73', + '\u2F77': '\u7CF8', + '\u2F78': '\u7F36', + '\u2F79': '\u7F51', + '\u2F7A': '\u7F8A', + '\u2F7B': '\u7FBD', + '\u2F7C': '\u8001', + '\u2F7D': '\u800C', + '\u2F7E': '\u8012', + '\u2F7F': '\u8033', + '\u2F80': '\u807F', + '\u2F81': '\u8089', + '\u2F82': '\u81E3', + '\u2F83': '\u81EA', + '\u2F84': '\u81F3', + '\u2F85': '\u81FC', + '\u2F86': '\u820C', + '\u2F87': '\u821B', + '\u2F88': '\u821F', + '\u2F89': '\u826E', + '\u2F8A': '\u8272', + '\u2F8B': '\u8278', + '\u2F8C': '\u864D', + '\u2F8D': '\u866B', + '\u2F8E': '\u8840', + '\u2F8F': '\u884C', + '\u2F90': '\u8863', + '\u2F91': '\u897E', + '\u2F92': '\u898B', + '\u2F93': '\u89D2', + '\u2F94': '\u8A00', + '\u2F95': '\u8C37', + '\u2F96': '\u8C46', + '\u2F97': '\u8C55', + '\u2F98': '\u8C78', + '\u2F99': '\u8C9D', + '\u2F9A': '\u8D64', + '\u2F9B': '\u8D70', + '\u2F9C': '\u8DB3', + '\u2F9D': '\u8EAB', + '\u2F9E': '\u8ECA', + '\u2F9F': '\u8F9B', + '\u2FA0': '\u8FB0', + '\u2FA1': '\u8FB5', + '\u2FA2': '\u9091', + '\u2FA3': '\u9149', + '\u2FA4': '\u91C6', + '\u2FA5': '\u91CC', + '\u2FA6': '\u91D1', + '\u2FA7': '\u9577', + '\u2FA8': '\u9580', + '\u2FA9': '\u961C', + '\u2FAA': '\u96B6', + '\u2FAB': '\u96B9', + '\u2FAC': '\u96E8', + '\u2FAD': '\u9751', + '\u2FAE': '\u975E', + '\u2FAF': '\u9762', + '\u2FB0': '\u9769', + '\u2FB1': '\u97CB', + '\u2FB2': '\u97ED', + '\u2FB3': '\u97F3', + '\u2FB4': '\u9801', + '\u2FB5': '\u98A8', + '\u2FB6': '\u98DB', + '\u2FB7': '\u98DF', + '\u2FB8': '\u9996', + '\u2FB9': '\u9999', + '\u2FBA': '\u99AC', + '\u2FBB': '\u9AA8', + '\u2FBC': '\u9AD8', + '\u2FBD': '\u9ADF', + '\u2FBE': '\u9B25', + '\u2FBF': '\u9B2F', + '\u2FC0': '\u9B32', + '\u2FC1': '\u9B3C', + '\u2FC2': '\u9B5A', + '\u2FC3': '\u9CE5', + '\u2FC4': '\u9E75', + '\u2FC5': '\u9E7F', + '\u2FC6': '\u9EA5', + '\u2FC7': '\u9EBB', + '\u2FC8': '\u9EC3', + '\u2FC9': '\u9ECD', + '\u2FCA': '\u9ED1', + '\u2FCB': '\u9EF9', + '\u2FCC': '\u9EFD', + '\u2FCD': '\u9F0E', + '\u2FCE': '\u9F13', + '\u2FCF': '\u9F20', + '\u2FD0': '\u9F3B', + '\u2FD1': '\u9F4A', + '\u2FD2': '\u9F52', + '\u2FD3': '\u9F8D', + '\u2FD4': '\u9F9C', + '\u2FD5': '\u9FA0', + '\u3036': '\u3012', + '\u3038': '\u5341', + '\u3039': '\u5344', + '\u303A': '\u5345', + '\u309B': '\u0020\u3099', + '\u309C': '\u0020\u309A', + '\u3131': '\u1100', + '\u3132': '\u1101', + '\u3133': '\u11AA', + '\u3134': '\u1102', + '\u3135': '\u11AC', + '\u3136': '\u11AD', + '\u3137': '\u1103', + '\u3138': '\u1104', + '\u3139': '\u1105', + '\u313A': '\u11B0', + '\u313B': '\u11B1', + '\u313C': '\u11B2', + '\u313D': '\u11B3', + '\u313E': '\u11B4', + '\u313F': '\u11B5', + '\u3140': '\u111A', + '\u3141': '\u1106', + '\u3142': '\u1107', + '\u3143': '\u1108', + '\u3144': '\u1121', + '\u3145': '\u1109', + '\u3146': '\u110A', + '\u3147': '\u110B', + '\u3148': '\u110C', + '\u3149': '\u110D', + '\u314A': '\u110E', + '\u314B': '\u110F', + '\u314C': '\u1110', + '\u314D': '\u1111', + '\u314E': '\u1112', + '\u314F': '\u1161', + '\u3150': '\u1162', + '\u3151': '\u1163', + '\u3152': '\u1164', + '\u3153': '\u1165', + '\u3154': '\u1166', + '\u3155': '\u1167', + '\u3156': '\u1168', + '\u3157': '\u1169', + '\u3158': '\u116A', + '\u3159': '\u116B', + '\u315A': '\u116C', + '\u315B': '\u116D', + '\u315C': '\u116E', + '\u315D': '\u116F', + '\u315E': '\u1170', + '\u315F': '\u1171', + '\u3160': '\u1172', + '\u3161': '\u1173', + '\u3162': '\u1174', + '\u3163': '\u1175', + '\u3164': '\u1160', + '\u3165': '\u1114', + '\u3166': '\u1115', + '\u3167': '\u11C7', + '\u3168': '\u11C8', + '\u3169': '\u11CC', + '\u316A': '\u11CE', + '\u316B': '\u11D3', + '\u316C': '\u11D7', + '\u316D': '\u11D9', + '\u316E': '\u111C', + '\u316F': '\u11DD', + '\u3170': '\u11DF', + '\u3171': '\u111D', + '\u3172': '\u111E', + '\u3173': '\u1120', + '\u3174': '\u1122', + '\u3175': '\u1123', + '\u3176': '\u1127', + '\u3177': '\u1129', + '\u3178': '\u112B', + '\u3179': '\u112C', + '\u317A': '\u112D', + '\u317B': '\u112E', + '\u317C': '\u112F', + '\u317D': '\u1132', + '\u317E': '\u1136', + '\u317F': '\u1140', + '\u3180': '\u1147', + '\u3181': '\u114C', + '\u3182': '\u11F1', + '\u3183': '\u11F2', + '\u3184': '\u1157', + '\u3185': '\u1158', + '\u3186': '\u1159', + '\u3187': '\u1184', + '\u3188': '\u1185', + '\u3189': '\u1188', + '\u318A': '\u1191', + '\u318B': '\u1192', + '\u318C': '\u1194', + '\u318D': '\u119E', + '\u318E': '\u11A1', + '\u3200': '\u0028\u1100\u0029', + '\u3201': '\u0028\u1102\u0029', + '\u3202': '\u0028\u1103\u0029', + '\u3203': '\u0028\u1105\u0029', + '\u3204': '\u0028\u1106\u0029', + '\u3205': '\u0028\u1107\u0029', + '\u3206': '\u0028\u1109\u0029', + '\u3207': '\u0028\u110B\u0029', + '\u3208': '\u0028\u110C\u0029', + '\u3209': '\u0028\u110E\u0029', + '\u320A': '\u0028\u110F\u0029', + '\u320B': '\u0028\u1110\u0029', + '\u320C': '\u0028\u1111\u0029', + '\u320D': '\u0028\u1112\u0029', + '\u320E': '\u0028\u1100\u1161\u0029', + '\u320F': '\u0028\u1102\u1161\u0029', + '\u3210': '\u0028\u1103\u1161\u0029', + '\u3211': '\u0028\u1105\u1161\u0029', + '\u3212': '\u0028\u1106\u1161\u0029', + '\u3213': '\u0028\u1107\u1161\u0029', + '\u3214': '\u0028\u1109\u1161\u0029', + '\u3215': '\u0028\u110B\u1161\u0029', + '\u3216': '\u0028\u110C\u1161\u0029', + '\u3217': '\u0028\u110E\u1161\u0029', + '\u3218': '\u0028\u110F\u1161\u0029', + '\u3219': '\u0028\u1110\u1161\u0029', + '\u321A': '\u0028\u1111\u1161\u0029', + '\u321B': '\u0028\u1112\u1161\u0029', + '\u321C': '\u0028\u110C\u116E\u0029', + '\u321D': '\u0028\u110B\u1169\u110C\u1165\u11AB\u0029', + '\u321E': '\u0028\u110B\u1169\u1112\u116E\u0029', + '\u3220': '\u0028\u4E00\u0029', + '\u3221': '\u0028\u4E8C\u0029', + '\u3222': '\u0028\u4E09\u0029', + '\u3223': '\u0028\u56DB\u0029', + '\u3224': '\u0028\u4E94\u0029', + '\u3225': '\u0028\u516D\u0029', + '\u3226': '\u0028\u4E03\u0029', + '\u3227': '\u0028\u516B\u0029', + '\u3228': '\u0028\u4E5D\u0029', + '\u3229': '\u0028\u5341\u0029', + '\u322A': '\u0028\u6708\u0029', + '\u322B': '\u0028\u706B\u0029', + '\u322C': '\u0028\u6C34\u0029', + '\u322D': '\u0028\u6728\u0029', + '\u322E': '\u0028\u91D1\u0029', + '\u322F': '\u0028\u571F\u0029', + '\u3230': '\u0028\u65E5\u0029', + '\u3231': '\u0028\u682A\u0029', + '\u3232': '\u0028\u6709\u0029', + '\u3233': '\u0028\u793E\u0029', + '\u3234': '\u0028\u540D\u0029', + '\u3235': '\u0028\u7279\u0029', + '\u3236': '\u0028\u8CA1\u0029', + '\u3237': '\u0028\u795D\u0029', + '\u3238': '\u0028\u52B4\u0029', + '\u3239': '\u0028\u4EE3\u0029', + '\u323A': '\u0028\u547C\u0029', + '\u323B': '\u0028\u5B66\u0029', + '\u323C': '\u0028\u76E3\u0029', + '\u323D': '\u0028\u4F01\u0029', + '\u323E': '\u0028\u8CC7\u0029', + '\u323F': '\u0028\u5354\u0029', + '\u3240': '\u0028\u796D\u0029', + '\u3241': '\u0028\u4F11\u0029', + '\u3242': '\u0028\u81EA\u0029', + '\u3243': '\u0028\u81F3\u0029', + '\u32C0': '\u0031\u6708', + '\u32C1': '\u0032\u6708', + '\u32C2': '\u0033\u6708', + '\u32C3': '\u0034\u6708', + '\u32C4': '\u0035\u6708', + '\u32C5': '\u0036\u6708', + '\u32C6': '\u0037\u6708', + '\u32C7': '\u0038\u6708', + '\u32C8': '\u0039\u6708', + '\u32C9': '\u0031\u0030\u6708', + '\u32CA': '\u0031\u0031\u6708', + '\u32CB': '\u0031\u0032\u6708', + '\u3358': '\u0030\u70B9', + '\u3359': '\u0031\u70B9', + '\u335A': '\u0032\u70B9', + '\u335B': '\u0033\u70B9', + '\u335C': '\u0034\u70B9', + '\u335D': '\u0035\u70B9', + '\u335E': '\u0036\u70B9', + '\u335F': '\u0037\u70B9', + '\u3360': '\u0038\u70B9', + '\u3361': '\u0039\u70B9', + '\u3362': '\u0031\u0030\u70B9', + '\u3363': '\u0031\u0031\u70B9', + '\u3364': '\u0031\u0032\u70B9', + '\u3365': '\u0031\u0033\u70B9', + '\u3366': '\u0031\u0034\u70B9', + '\u3367': '\u0031\u0035\u70B9', + '\u3368': '\u0031\u0036\u70B9', + '\u3369': '\u0031\u0037\u70B9', + '\u336A': '\u0031\u0038\u70B9', + '\u336B': '\u0031\u0039\u70B9', + '\u336C': '\u0032\u0030\u70B9', + '\u336D': '\u0032\u0031\u70B9', + '\u336E': '\u0032\u0032\u70B9', + '\u336F': '\u0032\u0033\u70B9', + '\u3370': '\u0032\u0034\u70B9', + '\u33E0': '\u0031\u65E5', + '\u33E1': '\u0032\u65E5', + '\u33E2': '\u0033\u65E5', + '\u33E3': '\u0034\u65E5', + '\u33E4': '\u0035\u65E5', + '\u33E5': '\u0036\u65E5', + '\u33E6': '\u0037\u65E5', + '\u33E7': '\u0038\u65E5', + '\u33E8': '\u0039\u65E5', + '\u33E9': '\u0031\u0030\u65E5', + '\u33EA': '\u0031\u0031\u65E5', + '\u33EB': '\u0031\u0032\u65E5', + '\u33EC': '\u0031\u0033\u65E5', + '\u33ED': '\u0031\u0034\u65E5', + '\u33EE': '\u0031\u0035\u65E5', + '\u33EF': '\u0031\u0036\u65E5', + '\u33F0': '\u0031\u0037\u65E5', + '\u33F1': '\u0031\u0038\u65E5', + '\u33F2': '\u0031\u0039\u65E5', + '\u33F3': '\u0032\u0030\u65E5', + '\u33F4': '\u0032\u0031\u65E5', + '\u33F5': '\u0032\u0032\u65E5', + '\u33F6': '\u0032\u0033\u65E5', + '\u33F7': '\u0032\u0034\u65E5', + '\u33F8': '\u0032\u0035\u65E5', + '\u33F9': '\u0032\u0036\u65E5', + '\u33FA': '\u0032\u0037\u65E5', + '\u33FB': '\u0032\u0038\u65E5', + '\u33FC': '\u0032\u0039\u65E5', + '\u33FD': '\u0033\u0030\u65E5', + '\u33FE': '\u0033\u0031\u65E5', + '\uFB00': '\u0066\u0066', + '\uFB01': '\u0066\u0069', + '\uFB02': '\u0066\u006C', + '\uFB03': '\u0066\u0066\u0069', + '\uFB04': '\u0066\u0066\u006C', + '\uFB05': '\u017F\u0074', + '\uFB06': '\u0073\u0074', + '\uFB13': '\u0574\u0576', + '\uFB14': '\u0574\u0565', + '\uFB15': '\u0574\u056B', + '\uFB16': '\u057E\u0576', + '\uFB17': '\u0574\u056D', + '\uFB4F': '\u05D0\u05DC', + '\uFB50': '\u0671', + '\uFB51': '\u0671', + '\uFB52': '\u067B', + '\uFB53': '\u067B', + '\uFB54': '\u067B', + '\uFB55': '\u067B', + '\uFB56': '\u067E', + '\uFB57': '\u067E', + '\uFB58': '\u067E', + '\uFB59': '\u067E', + '\uFB5A': '\u0680', + '\uFB5B': '\u0680', + '\uFB5C': '\u0680', + '\uFB5D': '\u0680', + '\uFB5E': '\u067A', + '\uFB5F': '\u067A', + '\uFB60': '\u067A', + '\uFB61': '\u067A', + '\uFB62': '\u067F', + '\uFB63': '\u067F', + '\uFB64': '\u067F', + '\uFB65': '\u067F', + '\uFB66': '\u0679', + '\uFB67': '\u0679', + '\uFB68': '\u0679', + '\uFB69': '\u0679', + '\uFB6A': '\u06A4', + '\uFB6B': '\u06A4', + '\uFB6C': '\u06A4', + '\uFB6D': '\u06A4', + '\uFB6E': '\u06A6', + '\uFB6F': '\u06A6', + '\uFB70': '\u06A6', + '\uFB71': '\u06A6', + '\uFB72': '\u0684', + '\uFB73': '\u0684', + '\uFB74': '\u0684', + '\uFB75': '\u0684', + '\uFB76': '\u0683', + '\uFB77': '\u0683', + '\uFB78': '\u0683', + '\uFB79': '\u0683', + '\uFB7A': '\u0686', + '\uFB7B': '\u0686', + '\uFB7C': '\u0686', + '\uFB7D': '\u0686', + '\uFB7E': '\u0687', + '\uFB7F': '\u0687', + '\uFB80': '\u0687', + '\uFB81': '\u0687', + '\uFB82': '\u068D', + '\uFB83': '\u068D', + '\uFB84': '\u068C', + '\uFB85': '\u068C', + '\uFB86': '\u068E', + '\uFB87': '\u068E', + '\uFB88': '\u0688', + '\uFB89': '\u0688', + 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'\u0634\u064A', + '\uFD1B': '\u062D\u0649', + '\uFD1C': '\u062D\u064A', + '\uFD1D': '\u062C\u0649', + '\uFD1E': '\u062C\u064A', + '\uFD1F': '\u062E\u0649', + '\uFD20': '\u062E\u064A', + '\uFD21': '\u0635\u0649', + '\uFD22': '\u0635\u064A', + '\uFD23': '\u0636\u0649', + '\uFD24': '\u0636\u064A', + '\uFD25': '\u0634\u062C', + '\uFD26': '\u0634\u062D', + '\uFD27': '\u0634\u062E', + '\uFD28': '\u0634\u0645', + '\uFD29': '\u0634\u0631', + '\uFD2A': '\u0633\u0631', + '\uFD2B': '\u0635\u0631', + '\uFD2C': '\u0636\u0631', + '\uFD2D': '\u0634\u062C', + '\uFD2E': '\u0634\u062D', + '\uFD2F': '\u0634\u062E', + '\uFD30': '\u0634\u0645', + '\uFD31': '\u0633\u0647', + '\uFD32': '\u0634\u0647', + '\uFD33': '\u0637\u0645', + '\uFD34': '\u0633\u062C', + '\uFD35': '\u0633\u062D', + '\uFD36': '\u0633\u062E', + '\uFD37': '\u0634\u062C', + '\uFD38': '\u0634\u062D', + '\uFD39': '\u0634\u062E', + '\uFD3A': '\u0637\u0645', + '\uFD3B': '\u0638\u0645', + '\uFD3C': '\u0627\u064B', + '\uFD3D': '\u0627\u064B', + '\uFD50': '\u062A\u062C\u0645', + '\uFD51': '\u062A\u062D\u062C', + '\uFD52': '\u062A\u062D\u062C', + '\uFD53': '\u062A\u062D\u0645', + '\uFD54': '\u062A\u062E\u0645', + '\uFD55': '\u062A\u0645\u062C', + '\uFD56': '\u062A\u0645\u062D', + '\uFD57': '\u062A\u0645\u062E', + '\uFD58': '\u062C\u0645\u062D', + '\uFD59': '\u062C\u0645\u062D', + '\uFD5A': '\u062D\u0645\u064A', + '\uFD5B': '\u062D\u0645\u0649', + '\uFD5C': '\u0633\u062D\u062C', + '\uFD5D': '\u0633\u062C\u062D', + '\uFD5E': '\u0633\u062C\u0649', + '\uFD5F': '\u0633\u0645\u062D', + '\uFD60': '\u0633\u0645\u062D', + '\uFD61': '\u0633\u0645\u062C', + '\uFD62': '\u0633\u0645\u0645', + '\uFD63': '\u0633\u0645\u0645', + '\uFD64': '\u0635\u062D\u062D', + '\uFD65': '\u0635\u062D\u062D', + '\uFD66': '\u0635\u0645\u0645', + '\uFD67': '\u0634\u062D\u0645', + '\uFD68': '\u0634\u062D\u0645', + '\uFD69': '\u0634\u062C\u064A', + '\uFD6A': '\u0634\u0645\u062E', + '\uFD6B': '\u0634\u0645\u062E', + '\uFD6C': '\u0634\u0645\u0645', + '\uFD6D': '\u0634\u0645\u0645', + '\uFD6E': '\u0636\u062D\u0649', + '\uFD6F': '\u0636\u062E\u0645', + '\uFD70': '\u0636\u062E\u0645', + '\uFD71': '\u0637\u0645\u062D', + '\uFD72': '\u0637\u0645\u062D', + '\uFD73': '\u0637\u0645\u0645', + '\uFD74': '\u0637\u0645\u064A', + '\uFD75': '\u0639\u062C\u0645', + '\uFD76': '\u0639\u0645\u0645', + '\uFD77': '\u0639\u0645\u0645', + '\uFD78': '\u0639\u0645\u0649', + '\uFD79': '\u063A\u0645\u0645', + '\uFD7A': '\u063A\u0645\u064A', + '\uFD7B': '\u063A\u0645\u0649', + '\uFD7C': '\u0641\u062E\u0645', + '\uFD7D': '\u0641\u062E\u0645', + '\uFD7E': '\u0642\u0645\u062D', + '\uFD7F': '\u0642\u0645\u0645', + '\uFD80': '\u0644\u062D\u0645', + '\uFD81': '\u0644\u062D\u064A', + '\uFD82': '\u0644\u062D\u0649', + '\uFD83': '\u0644\u062C\u062C', + '\uFD84': '\u0644\u062C\u062C', + '\uFD85': '\u0644\u062E\u0645', + '\uFD86': '\u0644\u062E\u0645', + '\uFD87': '\u0644\u0645\u062D', + '\uFD88': '\u0644\u0645\u062D', + '\uFD89': '\u0645\u062D\u062C', + '\uFD8A': '\u0645\u062D\u0645', + '\uFD8B': '\u0645\u062D\u064A', + '\uFD8C': '\u0645\u062C\u062D', + '\uFD8D': '\u0645\u062C\u0645', + '\uFD8E': '\u0645\u062E\u062C', + '\uFD8F': '\u0645\u062E\u0645', + '\uFD92': '\u0645\u062C\u062E', + '\uFD93': '\u0647\u0645\u062C', + '\uFD94': '\u0647\u0645\u0645', + '\uFD95': '\u0646\u062D\u0645', + '\uFD96': '\u0646\u062D\u0649', + '\uFD97': '\u0646\u062C\u0645', + '\uFD98': '\u0646\u062C\u0645', + '\uFD99': '\u0646\u062C\u0649', + '\uFD9A': '\u0646\u0645\u064A', + '\uFD9B': '\u0646\u0645\u0649', + '\uFD9C': '\u064A\u0645\u0645', + '\uFD9D': '\u064A\u0645\u0645', + '\uFD9E': '\u0628\u062E\u064A', + '\uFD9F': '\u062A\u062C\u064A', + '\uFDA0': '\u062A\u062C\u0649', + '\uFDA1': '\u062A\u062E\u064A', + '\uFDA2': '\u062A\u062E\u0649', + '\uFDA3': '\u062A\u0645\u064A', + '\uFDA4': '\u062A\u0645\u0649', + '\uFDA5': '\u062C\u0645\u064A', + '\uFDA6': '\u062C\u062D\u0649', + '\uFDA7': '\u062C\u0645\u0649', + '\uFDA8': '\u0633\u062E\u0649', + '\uFDA9': '\u0635\u062D\u064A', + '\uFDAA': '\u0634\u062D\u064A', + '\uFDAB': '\u0636\u062D\u064A', + '\uFDAC': '\u0644\u062C\u064A', + '\uFDAD': '\u0644\u0645\u064A', + '\uFDAE': '\u064A\u062D\u064A', + '\uFDAF': '\u064A\u062C\u064A', + '\uFDB0': '\u064A\u0645\u064A', + '\uFDB1': '\u0645\u0645\u064A', + '\uFDB2': '\u0642\u0645\u064A', + '\uFDB3': '\u0646\u062D\u064A', + '\uFDB4': '\u0642\u0645\u062D', + '\uFDB5': '\u0644\u062D\u0645', + '\uFDB6': '\u0639\u0645\u064A', + '\uFDB7': '\u0643\u0645\u064A', + '\uFDB8': '\u0646\u062C\u062D', + '\uFDB9': '\u0645\u062E\u064A', + '\uFDBA': '\u0644\u062C\u0645', + '\uFDBB': '\u0643\u0645\u0645', + '\uFDBC': '\u0644\u062C\u0645', + '\uFDBD': '\u0646\u062C\u062D', + '\uFDBE': '\u062C\u062D\u064A', + '\uFDBF': '\u062D\u062C\u064A', + '\uFDC0': '\u0645\u062C\u064A', + '\uFDC1': '\u0641\u0645\u064A', + '\uFDC2': '\u0628\u062D\u064A', + '\uFDC3': '\u0643\u0645\u0645', + '\uFDC4': '\u0639\u062C\u0645', + '\uFDC5': '\u0635\u0645\u0645', + '\uFDC6': '\u0633\u062E\u064A', + '\uFDC7': '\u0646\u062C\u064A', + '\uFE49': '\u203E', + '\uFE4A': '\u203E', + '\uFE4B': '\u203E', + '\uFE4C': '\u203E', + '\uFE4D': '\u005F', + '\uFE4E': '\u005F', + '\uFE4F': '\u005F', + '\uFE80': '\u0621', + '\uFE81': '\u0622', + '\uFE82': '\u0622', + '\uFE83': '\u0623', + '\uFE84': '\u0623', + '\uFE85': '\u0624', + '\uFE86': '\u0624', + '\uFE87': '\u0625', + '\uFE88': '\u0625', + '\uFE89': '\u0626', + '\uFE8A': '\u0626', + '\uFE8B': '\u0626', + '\uFE8C': '\u0626', + '\uFE8D': '\u0627', + '\uFE8E': '\u0627', + '\uFE8F': '\u0628', + '\uFE90': '\u0628', + '\uFE91': '\u0628', + '\uFE92': '\u0628', + '\uFE93': '\u0629', + '\uFE94': '\u0629', + '\uFE95': '\u062A', + '\uFE96': '\u062A', + '\uFE97': '\u062A', + '\uFE98': '\u062A', + '\uFE99': '\u062B', + '\uFE9A': '\u062B', + '\uFE9B': '\u062B', + '\uFE9C': '\u062B', + '\uFE9D': '\u062C', + '\uFE9E': '\u062C', + '\uFE9F': '\u062C', + '\uFEA0': '\u062C', + '\uFEA1': '\u062D', + '\uFEA2': '\u062D', + '\uFEA3': '\u062D', + '\uFEA4': '\u062D', + '\uFEA5': '\u062E', + '\uFEA6': '\u062E', + '\uFEA7': '\u062E', + '\uFEA8': '\u062E', + '\uFEA9': '\u062F', + '\uFEAA': '\u062F', + '\uFEAB': '\u0630', + '\uFEAC': '\u0630', + '\uFEAD': '\u0631', + '\uFEAE': '\u0631', + '\uFEAF': '\u0632', + '\uFEB0': '\u0632', + '\uFEB1': '\u0633', + '\uFEB2': '\u0633', + '\uFEB3': '\u0633', + '\uFEB4': '\u0633', + '\uFEB5': '\u0634', + '\uFEB6': '\u0634', + '\uFEB7': '\u0634', + '\uFEB8': '\u0634', + '\uFEB9': '\u0635', + '\uFEBA': '\u0635', + '\uFEBB': '\u0635', + '\uFEBC': '\u0635', + '\uFEBD': '\u0636', + '\uFEBE': '\u0636', + '\uFEBF': '\u0636', + '\uFEC0': '\u0636', + '\uFEC1': '\u0637', + '\uFEC2': '\u0637', + '\uFEC3': '\u0637', + '\uFEC4': '\u0637', + '\uFEC5': '\u0638', + '\uFEC6': '\u0638', + '\uFEC7': '\u0638', + '\uFEC8': '\u0638', + '\uFEC9': '\u0639', + '\uFECA': '\u0639', + '\uFECB': '\u0639', + '\uFECC': '\u0639', + '\uFECD': '\u063A', + '\uFECE': '\u063A', + '\uFECF': '\u063A', + '\uFED0': '\u063A', + '\uFED1': '\u0641', + '\uFED2': '\u0641', + '\uFED3': '\u0641', + '\uFED4': '\u0641', + '\uFED5': '\u0642', + '\uFED6': '\u0642', + '\uFED7': '\u0642', + '\uFED8': '\u0642', + '\uFED9': '\u0643', + '\uFEDA': '\u0643', + '\uFEDB': '\u0643', + '\uFEDC': '\u0643', + '\uFEDD': '\u0644', + '\uFEDE': '\u0644', + '\uFEDF': '\u0644', + '\uFEE0': '\u0644', + '\uFEE1': '\u0645', + '\uFEE2': '\u0645', + '\uFEE3': '\u0645', + '\uFEE4': '\u0645', + '\uFEE5': '\u0646', + '\uFEE6': '\u0646', + '\uFEE7': '\u0646', + '\uFEE8': '\u0646', + '\uFEE9': '\u0647', + '\uFEEA': '\u0647', + '\uFEEB': '\u0647', + '\uFEEC': '\u0647', + '\uFEED': '\u0648', + '\uFEEE': '\u0648', + '\uFEEF': '\u0649', + '\uFEF0': '\u0649', + '\uFEF1': '\u064A', + '\uFEF2': '\u064A', + '\uFEF3': '\u064A', + '\uFEF4': '\u064A', + '\uFEF5': '\u0644\u0622', + '\uFEF6': '\u0644\u0622', + '\uFEF7': '\u0644\u0623', + '\uFEF8': '\u0644\u0623', + '\uFEF9': '\u0644\u0625', + '\uFEFA': '\u0644\u0625', + '\uFEFB': '\u0644\u0627', + '\uFEFC': '\u0644\u0627' +}; + +function reverseIfRtl(chars) { + var charsLength = chars.length; + //reverse an arabic ligature + if (charsLength <= 1 || !isRTLRangeFor(chars.charCodeAt(0))) { + return chars; + } + var s = ''; + for (var ii = charsLength - 1; ii >= 0; ii--) { + s += chars[ii]; + } + return s; +} + +function adjustWidths(properties) { + if (properties.fontMatrix[0] === FONT_IDENTITY_MATRIX[0]) { + return; + } + // adjusting width to fontMatrix scale + var scale = 0.001 / properties.fontMatrix[0]; + var glyphsWidths = properties.widths; + for (var glyph in glyphsWidths) { + glyphsWidths[glyph] *= scale; + } + properties.defaultWidth *= scale; +} + +function getFontType(type, subtype) { + switch (type) { + case 'Type1': + return subtype === 'Type1C' ? FontType.TYPE1C : FontType.TYPE1; + case 'CIDFontType0': + return subtype === 'CIDFontType0C' ? FontType.CIDFONTTYPE0C : + FontType.CIDFONTTYPE0; + case 'OpenType': + return FontType.OPENTYPE; + case 'TrueType': + return FontType.TRUETYPE; + case 'CIDFontType2': + return FontType.CIDFONTTYPE2; + case 'MMType1': + return FontType.MMTYPE1; + case 'Type0': + return FontType.TYPE0; + default: + return FontType.UNKNOWN; + } +} + +var Glyph = (function GlyphClosure() { + function Glyph(fontChar, unicode, accent, width, vmetric, operatorListId) { + this.fontChar = fontChar; + this.unicode = unicode; + this.accent = accent; + this.width = width; + this.vmetric = vmetric; + this.operatorListId = operatorListId; + } + + Glyph.prototype.matchesForCache = + function(fontChar, unicode, accent, width, vmetric, operatorListId) { + return this.fontChar === fontChar && + this.unicode === unicode && + this.accent === accent && + this.width === width && + this.vmetric === vmetric && + this.operatorListId === operatorListId; + }; + + return Glyph; +})(); + +var ToUnicodeMap = (function ToUnicodeMapClosure() { + function ToUnicodeMap(cmap) { + // The elements of this._map can be integers or strings, depending on how + // |cmap| was created. + this._map = cmap; + } + + ToUnicodeMap.prototype = { + get length() { + return this._map.length; + }, + + forEach: function(callback) { + for (var charCode in this._map) { + callback(charCode, this._map[charCode].charCodeAt(0)); + } + }, + + has: function(i) { + return this._map[i] !== undefined; + }, + + get: function(i) { + return this._map[i]; + }, + + charCodeOf: function(v) { + return this._map.indexOf(v); + } + }; + + return ToUnicodeMap; +})(); + +var IdentityToUnicodeMap = (function IdentityToUnicodeMapClosure() { + function IdentityToUnicodeMap(firstChar, lastChar) { + this.firstChar = firstChar; + this.lastChar = lastChar; + } + + IdentityToUnicodeMap.prototype = { + get length() { + return (this.lastChar + 1) - this.firstChar; + }, + + forEach: function (callback) { + for (var i = this.firstChar, ii = this.lastChar; i <= ii; i++) { + callback(i, i); + } + }, + + has: function (i) { + return this.firstChar <= i && i <= this.lastChar; + }, + + get: function (i) { + if (this.firstChar <= i && i <= this.lastChar) { + return String.fromCharCode(i); + } + return undefined; + }, + + charCodeOf: function (v) { + error('should not call .charCodeOf'); + } + }; + + return IdentityToUnicodeMap; +})(); + +var OpenTypeFileBuilder = (function OpenTypeFileBuilderClosure() { + function writeInt16(dest, offset, num) { + dest[offset] = (num >> 8) & 0xFF; + dest[offset + 1] = num & 0xFF; + } + + function writeInt32(dest, offset, num) { + dest[offset] = (num >> 24) & 0xFF; + dest[offset + 1] = (num >> 16) & 0xFF; + dest[offset + 2] = (num >> 8) & 0xFF; + dest[offset + 3] = num & 0xFF; + } + + function writeData(dest, offset, data) { + var i, ii; + if (data instanceof Uint8Array) { + dest.set(data, offset); + } else if (typeof data === 'string') { + for (i = 0, ii = data.length; i < ii; i++) { + dest[offset++] = data.charCodeAt(i) & 0xFF; + } + } else { + // treating everything else as array + for (i = 0, ii = data.length; i < ii; i++) { + dest[offset++] = data[i] & 0xFF; + } + } + } + + function OpenTypeFileBuilder(sfnt) { + this.sfnt = sfnt; + this.tables = Object.create(null); + } + + OpenTypeFileBuilder.getSearchParams = + function OpenTypeFileBuilder_getSearchParams(entriesCount, entrySize) { + var maxPower2 = 1, log2 = 0; + while ((maxPower2 ^ entriesCount) > maxPower2) { + maxPower2 <<= 1; + log2++; + } + var searchRange = maxPower2 * entrySize; + return { + range: searchRange, + entry: log2, + rangeShift: entrySize * entriesCount - searchRange + }; + }; + + var OTF_HEADER_SIZE = 12; + var OTF_TABLE_ENTRY_SIZE = 16; + + OpenTypeFileBuilder.prototype = { + toArray: function OpenTypeFileBuilder_toArray() { + var sfnt = this.sfnt; + + // Tables needs to be written by ascendant alphabetic order + var tables = this.tables; + var tablesNames = Object.keys(tables); + tablesNames.sort(); + var numTables = tablesNames.length; + + var i, j, jj, table, tableName; + // layout the tables data + var offset = OTF_HEADER_SIZE + numTables * OTF_TABLE_ENTRY_SIZE; + var tableOffsets = [offset]; + for (i = 0; i < numTables; i++) { + table = tables[tablesNames[i]]; + var paddedLength = ((table.length + 3) & ~3) >>> 0; + offset += paddedLength; + tableOffsets.push(offset); + } + + var file = new Uint8Array(offset); + // write the table data first (mostly for checksum) + for (i = 0; i < numTables; i++) { + table = tables[tablesNames[i]]; + writeData(file, tableOffsets[i], table); + } + + // sfnt version (4 bytes) + if (sfnt === 'true') { + // Windows hates the Mac TrueType sfnt version number + sfnt = string32(0x00010000); + } + file[0] = sfnt.charCodeAt(0) & 0xFF; + file[1] = sfnt.charCodeAt(1) & 0xFF; + file[2] = sfnt.charCodeAt(2) & 0xFF; + file[3] = sfnt.charCodeAt(3) & 0xFF; + + // numTables (2 bytes) + writeInt16(file, 4, numTables); + + var searchParams = OpenTypeFileBuilder.getSearchParams(numTables, 16); + + // searchRange (2 bytes) + writeInt16(file, 6, searchParams.range); + // entrySelector (2 bytes) + writeInt16(file, 8, searchParams.entry); + // rangeShift (2 bytes) + writeInt16(file, 10, searchParams.rangeShift); + + offset = OTF_HEADER_SIZE; + // writing table entries + for (i = 0; i < numTables; i++) { + tableName = tablesNames[i]; + file[offset] = tableName.charCodeAt(0) & 0xFF; + file[offset + 1] = tableName.charCodeAt(1) & 0xFF; + file[offset + 2] = tableName.charCodeAt(2) & 0xFF; + file[offset + 3] = tableName.charCodeAt(3) & 0xFF; + + // checksum + var checksum = 0; + for (j = tableOffsets[i], jj = tableOffsets[i + 1]; j < jj; j += 4) { + var quad = (file[j] << 24) + (file[j + 1] << 16) + + (file[j + 2] << 8) + file[j + 3]; + checksum = (checksum + quad) | 0; + } + writeInt32(file, offset + 4, checksum); + + // offset + writeInt32(file, offset + 8, tableOffsets[i]); + // length + writeInt32(file, offset + 12, tables[tableName].length); + + offset += OTF_TABLE_ENTRY_SIZE; + } + return file; + }, + + addTable: function OpenTypeFileBuilder_addTable(tag, data) { + if (tag in this.tables) { + throw new Error('Table ' + tag + ' already exists'); + } + this.tables[tag] = data; + } + }; + + return OpenTypeFileBuilder; +})(); + +/** + * 'Font' is the class the outside world should use, it encapsulate all the font + * decoding logics whatever type it is (assuming the font type is supported). + * + * For example to read a Type1 font and to attach it to the document: + * var type1Font = new Font("MyFontName", binaryFile, propertiesObject); + * type1Font.bind(); + */ +var Font = (function FontClosure() { + function Font(name, file, properties) { + var charCode, glyphName, fontChar; + + this.name = name; + this.loadedName = properties.loadedName; + this.isType3Font = properties.isType3Font; + this.sizes = []; + + this.glyphCache = {}; + + var names = name.split('+'); + names = names.length > 1 ? names[1] : names[0]; + names = names.split(/[-,_]/g)[0]; + this.isSerifFont = !!(properties.flags & FontFlags.Serif); + this.isSymbolicFont = !!(properties.flags & FontFlags.Symbolic); + this.isMonospace = !!(properties.flags & FontFlags.FixedPitch); + + var type = properties.type; + var subtype = properties.subtype; + this.type = type; + + this.fallbackName = (this.isMonospace ? 'monospace' : + (this.isSerifFont ? 'serif' : 'sans-serif')); + + this.differences = properties.differences; + this.widths = properties.widths; + this.defaultWidth = properties.defaultWidth; + this.composite = properties.composite; + this.wideChars = properties.wideChars; + this.cMap = properties.cMap; + this.ascent = properties.ascent / PDF_GLYPH_SPACE_UNITS; + this.descent = properties.descent / PDF_GLYPH_SPACE_UNITS; + this.fontMatrix = properties.fontMatrix; + + this.toUnicode = properties.toUnicode = this.buildToUnicode(properties); + + this.toFontChar = []; + + if (properties.type === 'Type3') { + for (charCode = 0; charCode < 256; charCode++) { + this.toFontChar[charCode] = (this.differences[charCode] || + properties.defaultEncoding[charCode]); + } + this.fontType = FontType.TYPE3; + return; + } + + this.cidEncoding = properties.cidEncoding; + this.vertical = properties.vertical; + if (this.vertical) { + this.vmetrics = properties.vmetrics; + this.defaultVMetrics = properties.defaultVMetrics; + } + + if (!file || file.isEmpty) { + if (file) { + // Some bad PDF generators will include empty font files, + // attempting to recover by assuming that no file exists. + warn('Font file is empty in "' + name + '" (' + this.loadedName + ')'); + } + + this.missingFile = true; + // The file data is not specified. Trying to fix the font name + // to be used with the canvas.font. + var fontName = name.replace(/[,_]/g, '-'); + var isStandardFont = !!stdFontMap[fontName] || + !!(nonStdFontMap[fontName] && stdFontMap[nonStdFontMap[fontName]]); + fontName = stdFontMap[fontName] || nonStdFontMap[fontName] || fontName; + + this.bold = (fontName.search(/bold/gi) !== -1); + this.italic = ((fontName.search(/oblique/gi) !== -1) || + (fontName.search(/italic/gi) !== -1)); + + // Use 'name' instead of 'fontName' here because the original + // name ArialBlack for example will be replaced by Helvetica. + this.black = (name.search(/Black/g) !== -1); + + // if at least one width is present, remeasure all chars when exists + this.remeasure = Object.keys(this.widths).length > 0; + if (isStandardFont && type === 'CIDFontType2' && + properties.cidEncoding.indexOf('Identity-') === 0) { + // Standard fonts might be embedded as CID font without glyph mapping. + // Building one based on GlyphMapForStandardFonts. + var map = []; + for (var code in GlyphMapForStandardFonts) { + map[+code] = GlyphMapForStandardFonts[code]; + } + var isIdentityUnicode = this.toUnicode instanceof IdentityToUnicodeMap; + if (!isIdentityUnicode) { + this.toUnicode.forEach(function(charCode, unicodeCharCode) { + map[+charCode] = unicodeCharCode; + }); + } + this.toFontChar = map; + this.toUnicode = new ToUnicodeMap(map); + } else if (/Symbol/i.test(fontName)) { + var symbols = Encodings.SymbolSetEncoding; + for (charCode in symbols) { + fontChar = GlyphsUnicode[symbols[charCode]]; + if (!fontChar) { + continue; + } + this.toFontChar[charCode] = fontChar; + } + for (charCode in properties.differences) { + fontChar = GlyphsUnicode[properties.differences[charCode]]; + if (!fontChar) { + continue; + } + this.toFontChar[charCode] = fontChar; + } + } else if (/Dingbats/i.test(fontName)) { + if (/Wingdings/i.test(name)) { + warn('Wingdings font without embedded font file, ' + + 'falling back to the ZapfDingbats encoding.'); + } + var dingbats = Encodings.ZapfDingbatsEncoding; + for (charCode in dingbats) { + fontChar = DingbatsGlyphsUnicode[dingbats[charCode]]; + if (!fontChar) { + continue; + } + this.toFontChar[charCode] = fontChar; + } + for (charCode in properties.differences) { + fontChar = DingbatsGlyphsUnicode[properties.differences[charCode]]; + if (!fontChar) { + continue; + } + this.toFontChar[charCode] = fontChar; + } + } else if (isStandardFont) { + this.toFontChar = []; + for (charCode in properties.defaultEncoding) { + glyphName = (properties.differences[charCode] || + properties.defaultEncoding[charCode]); + this.toFontChar[charCode] = GlyphsUnicode[glyphName]; + } + } else { + var unicodeCharCode, notCidFont = (type.indexOf('CIDFontType') === -1); + this.toUnicode.forEach(function(charCode, unicodeCharCode) { + if (notCidFont) { + glyphName = (properties.differences[charCode] || + properties.defaultEncoding[charCode]); + unicodeCharCode = (GlyphsUnicode[glyphName] || unicodeCharCode); + } + this.toFontChar[charCode] = unicodeCharCode; + }.bind(this)); + } + this.loadedName = fontName.split('-')[0]; + this.loading = false; + this.fontType = getFontType(type, subtype); + return; + } + + // Some fonts might use wrong font types for Type1C or CIDFontType0C + if (subtype === 'Type1C' && (type !== 'Type1' && type !== 'MMType1')) { + // Some TrueType fonts by mistake claim Type1C + if (isTrueTypeFile(file)) { + subtype = 'TrueType'; + } else { + type = 'Type1'; + } + } + if (subtype === 'CIDFontType0C' && type !== 'CIDFontType0') { + type = 'CIDFontType0'; + } + if (subtype === 'OpenType') { + type = 'OpenType'; + } + // Some CIDFontType0C fonts by mistake claim CIDFontType0. + if (type === 'CIDFontType0') { + subtype = isType1File(file) ? 'CIDFontType0' : 'CIDFontType0C'; + } + + var data; + switch (type) { + case 'MMType1': + info('MMType1 font (' + name + '), falling back to Type1.'); + /* falls through */ + case 'Type1': + case 'CIDFontType0': + this.mimetype = 'font/opentype'; + + var cff = (subtype === 'Type1C' || subtype === 'CIDFontType0C') ? + new CFFFont(file, properties) : new Type1Font(name, file, properties); + + adjustWidths(properties); + + // Wrap the CFF data inside an OTF font file + data = this.convert(name, cff, properties); + break; + + case 'OpenType': + case 'TrueType': + case 'CIDFontType2': + this.mimetype = 'font/opentype'; + + // Repair the TrueType file. It is can be damaged in the point of + // view of the sanitizer + data = this.checkAndRepair(name, file, properties); + if (this.isOpenType) { + type = 'OpenType'; + } + break; + + default: + error('Font ' + type + ' is not supported'); + break; + } + + this.data = data; + this.fontType = getFontType(type, subtype); + + // Transfer some properties again that could change during font conversion + this.fontMatrix = properties.fontMatrix; + this.widths = properties.widths; + this.defaultWidth = properties.defaultWidth; + this.encoding = properties.baseEncoding; + this.seacMap = properties.seacMap; + + this.loading = true; + } + + Font.getFontID = (function () { + var ID = 1; + return function Font_getFontID() { + return String(ID++); + }; + })(); + + function int16(b0, b1) { + return (b0 << 8) + b1; + } + + function int32(b0, b1, b2, b3) { + return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3; + } + + function string16(value) { + return String.fromCharCode((value >> 8) & 0xff, value & 0xff); + } + + function safeString16(value) { + // clamp value to the 16-bit int range + value = (value > 0x7FFF ? 0x7FFF : (value < -0x8000 ? -0x8000 : value)); + return String.fromCharCode((value >> 8) & 0xff, value & 0xff); + } + + function isTrueTypeFile(file) { + var header = file.peekBytes(4); + return readUint32(header, 0) === 0x00010000; + } + + function isType1File(file) { + var header = file.peekBytes(2); + // All Type1 font programs must begin with the comment '%!' (0x25 + 0x21). + if (header[0] === 0x25 && header[1] === 0x21) { + return true; + } + // ... obviously some fonts violate that part of the specification, + // please refer to the comment in |Type1Font| below. + if (header[0] === 0x80 && header[1] === 0x01) { // pfb file header. + return true; + } + return false; + } + + /** + * Helper function for |adjustMapping|. + * @return {boolean} + */ + function isProblematicUnicodeLocation(code) { + if (code <= 0x1F) { // Control chars + return true; + } + if (code >= 0x80 && code <= 0x9F) { // Control chars + return true; + } + if ((code >= 0x2000 && code <= 0x200F) || // General punctuation chars + (code >= 0x2028 && code <= 0x202F) || + (code >= 0x2060 && code <= 0x206F)) { + return true; + } + if (code >= 0xFFF0 && code <= 0xFFFF) { // Specials Unicode block + return true; + } + switch (code) { + case 0x7F: // Control char + case 0xA0: // Non breaking space + case 0xAD: // Soft hyphen + case 0x0E33: // Thai character SARA AM + case 0x2011: // Non breaking hyphen + case 0x205F: // Medium mathematical space + case 0x25CC: // Dotted circle (combining mark) + return true; + } + return false; + } + + /** + * Rebuilds the char code to glyph ID map by trying to replace the char codes + * with their unicode value. It also moves char codes that are in known + * problematic locations. + * @return {Object} Two properties: + * 'toFontChar' - maps original char codes(the value that will be read + * from commands such as show text) to the char codes that will be used in the + * font that we build + * 'charCodeToGlyphId' - maps the new font char codes to glyph ids + */ + function adjustMapping(charCodeToGlyphId, properties) { + var toUnicode = properties.toUnicode; + var isSymbolic = !!(properties.flags & FontFlags.Symbolic); + var isIdentityUnicode = + properties.toUnicode instanceof IdentityToUnicodeMap; + var newMap = Object.create(null); + var toFontChar = []; + var usedFontCharCodes = []; + var nextAvailableFontCharCode = PRIVATE_USE_OFFSET_START; + for (var originalCharCode in charCodeToGlyphId) { + originalCharCode |= 0; + var glyphId = charCodeToGlyphId[originalCharCode]; + var fontCharCode = originalCharCode; + // First try to map the value to a unicode position if a non identity map + // was created. + if (!isIdentityUnicode && toUnicode.has(originalCharCode)) { + var unicode = toUnicode.get(fontCharCode); + // TODO: Try to map ligatures to the correct spot. + if (unicode.length === 1) { + fontCharCode = unicode.charCodeAt(0); + } + } + // Try to move control characters, special characters and already mapped + // characters to the private use area since they will not be drawn by + // canvas if left in their current position. Also, move characters if the + // font was symbolic and there is only an identity unicode map since the + // characters probably aren't in the correct position (fixes an issue + // with firefox and thuluthfont). + if ((usedFontCharCodes[fontCharCode] !== undefined || + isProblematicUnicodeLocation(fontCharCode) || + (isSymbolic && isIdentityUnicode)) && + nextAvailableFontCharCode <= PRIVATE_USE_OFFSET_END) { // Room left. + // Loop to try and find a free spot in the private use area. + do { + fontCharCode = nextAvailableFontCharCode++; + + if (SKIP_PRIVATE_USE_RANGE_F000_TO_F01F && fontCharCode === 0xF000) { + fontCharCode = 0xF020; + nextAvailableFontCharCode = fontCharCode + 1; + } + + } while (usedFontCharCodes[fontCharCode] !== undefined && + nextAvailableFontCharCode <= PRIVATE_USE_OFFSET_END); + } + + newMap[fontCharCode] = glyphId; + toFontChar[originalCharCode] = fontCharCode; + usedFontCharCodes[fontCharCode] = true; + } + return { + toFontChar: toFontChar, + charCodeToGlyphId: newMap, + nextAvailableFontCharCode: nextAvailableFontCharCode + }; + } + + function getRanges(glyphs) { + // Array.sort() sorts by characters, not numerically, so convert to an + // array of characters. + var codes = []; + for (var charCode in glyphs) { + codes.push({ fontCharCode: charCode | 0, glyphId: glyphs[charCode] }); + } + codes.sort(function fontGetRangesSort(a, b) { + return a.fontCharCode - b.fontCharCode; + }); + + // Split the sorted codes into ranges. + var ranges = []; + var length = codes.length; + for (var n = 0; n < length; ) { + var start = codes[n].fontCharCode; + var codeIndices = [codes[n].glyphId]; + ++n; + var end = start; + while (n < length && end + 1 === codes[n].fontCharCode) { + codeIndices.push(codes[n].glyphId); + ++end; + ++n; + if (end === 0xFFFF) { + break; + } + } + ranges.push([start, end, codeIndices]); + } + + return ranges; + } + + function createCmapTable(glyphs) { + var ranges = getRanges(glyphs); + var numTables = ranges[ranges.length - 1][1] > 0xFFFF ? 2 : 1; + var cmap = '\x00\x00' + // version + string16(numTables) + // numTables + '\x00\x03' + // platformID + '\x00\x01' + // encodingID + string32(4 + numTables * 8); // start of the table record + + var i, ii, j, jj; + for (i = ranges.length - 1; i >= 0; --i) { + if (ranges[i][0] <= 0xFFFF) { break; } + } + var bmpLength = i + 1; + + if (ranges[i][0] < 0xFFFF && ranges[i][1] === 0xFFFF) { + ranges[i][1] = 0xFFFE; + } + var trailingRangesCount = ranges[i][1] < 0xFFFF ? 1 : 0; + var segCount = bmpLength + trailingRangesCount; + var searchParams = OpenTypeFileBuilder.getSearchParams(segCount, 2); + + // Fill up the 4 parallel arrays describing the segments. + var startCount = ''; + var endCount = ''; + var idDeltas = ''; + var idRangeOffsets = ''; + var glyphsIds = ''; + var bias = 0; + + var range, start, end, codes; + for (i = 0, ii = bmpLength; i < ii; i++) { + range = ranges[i]; + start = range[0]; + end = range[1]; + startCount += string16(start); + endCount += string16(end); + codes = range[2]; + var contiguous = true; + for (j = 1, jj = codes.length; j < jj; ++j) { + if (codes[j] !== codes[j - 1] + 1) { + contiguous = false; + break; + } + } + if (!contiguous) { + var offset = (segCount - i) * 2 + bias * 2; + bias += (end - start + 1); + + idDeltas += string16(0); + idRangeOffsets += string16(offset); + + for (j = 0, jj = codes.length; j < jj; ++j) { + glyphsIds += string16(codes[j]); + } + } else { + var startCode = codes[0]; + + idDeltas += string16((startCode - start) & 0xFFFF); + idRangeOffsets += string16(0); + } + } + + if (trailingRangesCount > 0) { + endCount += '\xFF\xFF'; + startCount += '\xFF\xFF'; + idDeltas += '\x00\x01'; + idRangeOffsets += '\x00\x00'; + } + + var format314 = '\x00\x00' + // language + string16(2 * segCount) + + string16(searchParams.range) + + string16(searchParams.entry) + + string16(searchParams.rangeShift) + + endCount + '\x00\x00' + startCount + + idDeltas + idRangeOffsets + glyphsIds; + + var format31012 = ''; + var header31012 = ''; + if (numTables > 1) { + cmap += '\x00\x03' + // platformID + '\x00\x0A' + // encodingID + string32(4 + numTables * 8 + + 4 + format314.length); // start of the table record + format31012 = ''; + for (i = 0, ii = ranges.length; i < ii; i++) { + range = ranges[i]; + start = range[0]; + codes = range[2]; + var code = codes[0]; + for (j = 1, jj = codes.length; j < jj; ++j) { + if (codes[j] !== codes[j - 1] + 1) { + end = range[0] + j - 1; + format31012 += string32(start) + // startCharCode + string32(end) + // endCharCode + string32(code); // startGlyphID + start = end + 1; + code = codes[j]; + } + } + format31012 += string32(start) + // startCharCode + string32(range[1]) + // endCharCode + string32(code); // startGlyphID + } + header31012 = '\x00\x0C' + // format + '\x00\x00' + // reserved + string32(format31012.length + 16) + // length + '\x00\x00\x00\x00' + // language + string32(format31012.length / 12); // nGroups + } + + return cmap + '\x00\x04' + // format + string16(format314.length + 4) + // length + format314 + header31012 + format31012; + } + + function validateOS2Table(os2) { + var stream = new Stream(os2.data); + var version = stream.getUint16(); + // TODO verify all OS/2 tables fields, but currently we validate only those + // that give us issues + stream.getBytes(60); // skipping type, misc sizes, panose, unicode ranges + var selection = stream.getUint16(); + if (version < 4 && (selection & 0x0300)) { + return false; + } + var firstChar = stream.getUint16(); + var lastChar = stream.getUint16(); + if (firstChar > lastChar) { + return false; + } + stream.getBytes(6); // skipping sTypoAscender/Descender/LineGap + var usWinAscent = stream.getUint16(); + if (usWinAscent === 0) { // makes font unreadable by windows + return false; + } + + // OS/2 appears to be valid, resetting some fields + os2.data[8] = os2.data[9] = 0; // IE rejects fonts if fsType != 0 + return true; + } + + function createOS2Table(properties, charstrings, override) { + override = override || { + unitsPerEm: 0, + yMax: 0, + yMin: 0, + ascent: 0, + descent: 0 + }; + + var ulUnicodeRange1 = 0; + var ulUnicodeRange2 = 0; + var ulUnicodeRange3 = 0; + var ulUnicodeRange4 = 0; + + var firstCharIndex = null; + var lastCharIndex = 0; + + if (charstrings) { + for (var code in charstrings) { + code |= 0; + if (firstCharIndex > code || !firstCharIndex) { + firstCharIndex = code; + } + if (lastCharIndex < code) { + lastCharIndex = code; + } + + var position = getUnicodeRangeFor(code); + if (position < 32) { + ulUnicodeRange1 |= 1 << position; + } else if (position < 64) { + ulUnicodeRange2 |= 1 << position - 32; + } else if (position < 96) { + ulUnicodeRange3 |= 1 << position - 64; + } else if (position < 123) { + ulUnicodeRange4 |= 1 << position - 96; + } else { + error('Unicode ranges Bits > 123 are reserved for internal usage'); + } + } + } else { + // TODO + firstCharIndex = 0; + lastCharIndex = 255; + } + + var bbox = properties.bbox || [0, 0, 0, 0]; + var unitsPerEm = (override.unitsPerEm || + 1 / (properties.fontMatrix || FONT_IDENTITY_MATRIX)[0]); + + // if the font units differ to the PDF glyph space units + // then scale up the values + var scale = (properties.ascentScaled ? 1.0 : + unitsPerEm / PDF_GLYPH_SPACE_UNITS); + + var typoAscent = (override.ascent || + Math.round(scale * (properties.ascent || bbox[3]))); + var typoDescent = (override.descent || + Math.round(scale * (properties.descent || bbox[1]))); + if (typoDescent > 0 && properties.descent > 0 && bbox[1] < 0) { + typoDescent = -typoDescent; // fixing incorrect descent + } + var winAscent = override.yMax || typoAscent; + var winDescent = -override.yMin || -typoDescent; + + return '\x00\x03' + // version + '\x02\x24' + // xAvgCharWidth + '\x01\xF4' + // usWeightClass + '\x00\x05' + // usWidthClass + '\x00\x00' + // fstype (0 to let the font loads via font-face on IE) + '\x02\x8A' + // ySubscriptXSize + '\x02\xBB' + // ySubscriptYSize + '\x00\x00' + // ySubscriptXOffset + '\x00\x8C' + // ySubscriptYOffset + '\x02\x8A' + // ySuperScriptXSize + '\x02\xBB' + // ySuperScriptYSize + '\x00\x00' + // ySuperScriptXOffset + '\x01\xDF' + // ySuperScriptYOffset + '\x00\x31' + // yStrikeOutSize + '\x01\x02' + // yStrikeOutPosition + '\x00\x00' + // sFamilyClass + '\x00\x00\x06' + + String.fromCharCode(properties.fixedPitch ? 0x09 : 0x00) + + '\x00\x00\x00\x00\x00\x00' + // Panose + string32(ulUnicodeRange1) + // ulUnicodeRange1 (Bits 0-31) + string32(ulUnicodeRange2) + // ulUnicodeRange2 (Bits 32-63) + string32(ulUnicodeRange3) + // ulUnicodeRange3 (Bits 64-95) + string32(ulUnicodeRange4) + // ulUnicodeRange4 (Bits 96-127) + '\x2A\x32\x31\x2A' + // achVendID + string16(properties.italicAngle ? 1 : 0) + // fsSelection + string16(firstCharIndex || + properties.firstChar) + // usFirstCharIndex + string16(lastCharIndex || properties.lastChar) + // usLastCharIndex + string16(typoAscent) + // sTypoAscender + string16(typoDescent) + // sTypoDescender + '\x00\x64' + // sTypoLineGap (7%-10% of the unitsPerEM value) + string16(winAscent) + // usWinAscent + string16(winDescent) + // usWinDescent + '\x00\x00\x00\x00' + // ulCodePageRange1 (Bits 0-31) + '\x00\x00\x00\x00' + // ulCodePageRange2 (Bits 32-63) + string16(properties.xHeight) + // sxHeight + string16(properties.capHeight) + // sCapHeight + string16(0) + // usDefaultChar + string16(firstCharIndex || properties.firstChar) + // usBreakChar + '\x00\x03'; // usMaxContext + } + + function createPostTable(properties) { + var angle = Math.floor(properties.italicAngle * (Math.pow(2, 16))); + return ('\x00\x03\x00\x00' + // Version number + string32(angle) + // italicAngle + '\x00\x00' + // underlinePosition + '\x00\x00' + // underlineThickness + string32(properties.fixedPitch) + // isFixedPitch + '\x00\x00\x00\x00' + // minMemType42 + '\x00\x00\x00\x00' + // maxMemType42 + '\x00\x00\x00\x00' + // minMemType1 + '\x00\x00\x00\x00'); // maxMemType1 + } + + function createNameTable(name, proto) { + if (!proto) { + proto = [[], []]; // no strings and unicode strings + } + + var strings = [ + proto[0][0] || 'Original licence', // 0.Copyright + proto[0][1] || name, // 1.Font family + proto[0][2] || 'Unknown', // 2.Font subfamily (font weight) + proto[0][3] || 'uniqueID', // 3.Unique ID + proto[0][4] || name, // 4.Full font name + proto[0][5] || 'Version 0.11', // 5.Version + proto[0][6] || '', // 6.Postscript name + proto[0][7] || 'Unknown', // 7.Trademark + proto[0][8] || 'Unknown', // 8.Manufacturer + proto[0][9] || 'Unknown' // 9.Designer + ]; + + // Mac want 1-byte per character strings while Windows want + // 2-bytes per character, so duplicate the names table + var stringsUnicode = []; + var i, ii, j, jj, str; + for (i = 0, ii = strings.length; i < ii; i++) { + str = proto[1][i] || strings[i]; + + var strBufUnicode = []; + for (j = 0, jj = str.length; j < jj; j++) { + strBufUnicode.push(string16(str.charCodeAt(j))); + } + stringsUnicode.push(strBufUnicode.join('')); + } + + var names = [strings, stringsUnicode]; + var platforms = ['\x00\x01', '\x00\x03']; + var encodings = ['\x00\x00', '\x00\x01']; + var languages = ['\x00\x00', '\x04\x09']; + + var namesRecordCount = strings.length * platforms.length; + var nameTable = + '\x00\x00' + // format + string16(namesRecordCount) + // Number of names Record + string16(namesRecordCount * 12 + 6); // Storage + + // Build the name records field + var strOffset = 0; + for (i = 0, ii = platforms.length; i < ii; i++) { + var strs = names[i]; + for (j = 0, jj = strs.length; j < jj; j++) { + str = strs[j]; + var nameRecord = + platforms[i] + // platform ID + encodings[i] + // encoding ID + languages[i] + // language ID + string16(j) + // name ID + string16(str.length) + + string16(strOffset); + nameTable += nameRecord; + strOffset += str.length; + } + } + + nameTable += strings.join('') + stringsUnicode.join(''); + return nameTable; + } + + Font.prototype = { + name: null, + font: null, + mimetype: null, + encoding: null, + get renderer() { + var renderer = FontRendererFactory.create(this); + return shadow(this, 'renderer', renderer); + }, + + exportData: function Font_exportData() { + var data = {}; + for (var i in this) { + if (this.hasOwnProperty(i)) { + data[i] = this[i]; + } + } + return data; + }, + + checkAndRepair: function Font_checkAndRepair(name, font, properties) { + function readTableEntry(file) { + var tag = bytesToString(file.getBytes(4)); + + var checksum = file.getInt32(); + var offset = file.getInt32() >>> 0; + var length = file.getInt32() >>> 0; + + // Read the table associated data + var previousPosition = file.pos; + file.pos = file.start ? file.start : 0; + file.skip(offset); + var data = file.getBytes(length); + file.pos = previousPosition; + + if (tag === 'head') { + // clearing checksum adjustment + data[8] = data[9] = data[10] = data[11] = 0; + data[17] |= 0x20; //Set font optimized for cleartype flag + } + + return { + tag: tag, + checksum: checksum, + length: length, + offset: offset, + data: data + }; + } + + function readOpenTypeHeader(ttf) { + return { + version: bytesToString(ttf.getBytes(4)), + numTables: ttf.getUint16(), + searchRange: ttf.getUint16(), + entrySelector: ttf.getUint16(), + rangeShift: ttf.getUint16() + }; + } + + /** + * Read the appropriate subtable from the cmap according to 9.6.6.4 from + * PDF spec + */ + function readCmapTable(cmap, font, isSymbolicFont) { + var segment; + var start = (font.start ? font.start : 0) + cmap.offset; + font.pos = start; + + var version = font.getUint16(); + var numTables = font.getUint16(); + + var potentialTable; + var canBreak = false; + // There's an order of preference in terms of which cmap subtable to + // use: + // - non-symbolic fonts the preference is a 3,1 table then a 1,0 table + // - symbolic fonts the preference is a 3,0 table then a 1,0 table + // The following takes advantage of the fact that the tables are sorted + // to work. + for (var i = 0; i < numTables; i++) { + var platformId = font.getUint16(); + var encodingId = font.getUint16(); + var offset = font.getInt32() >>> 0; + var useTable = false; + + if (platformId === 0 && encodingId === 0) { + useTable = true; + // Continue the loop since there still may be a higher priority + // table. + } else if (platformId === 1 && encodingId === 0) { + useTable = true; + // Continue the loop since there still may be a higher priority + // table. + } else if (platformId === 3 && encodingId === 1 && + (!isSymbolicFont || !potentialTable)) { + useTable = true; + if (!isSymbolicFont) { + canBreak = true; + } + } else if (isSymbolicFont && platformId === 3 && encodingId === 0) { + useTable = true; + canBreak = true; + } + + if (useTable) { + potentialTable = { + platformId: platformId, + encodingId: encodingId, + offset: offset + }; + } + if (canBreak) { + break; + } + } + + if (!potentialTable) { + warn('Could not find a preferred cmap table.'); + return { + platformId: -1, + encodingId: -1, + mappings: [], + hasShortCmap: false + }; + } + + font.pos = start + potentialTable.offset; + var format = font.getUint16(); + var length = font.getUint16(); + var language = font.getUint16(); + + var hasShortCmap = false; + var mappings = []; + var j, glyphId; + + // TODO(mack): refactor this cmap subtable reading logic out + if (format === 0) { + for (j = 0; j < 256; j++) { + var index = font.getByte(); + if (!index) { + continue; + } + mappings.push({ + charCode: j, + glyphId: index + }); + } + hasShortCmap = true; + } else if (format === 4) { + // re-creating the table in format 4 since the encoding + // might be changed + var segCount = (font.getUint16() >> 1); + font.getBytes(6); // skipping range fields + var segIndex, segments = []; + for (segIndex = 0; segIndex < segCount; segIndex++) { + segments.push({ end: font.getUint16() }); + } + font.getUint16(); + for (segIndex = 0; segIndex < segCount; segIndex++) { + segments[segIndex].start = font.getUint16(); + } + + for (segIndex = 0; segIndex < segCount; segIndex++) { + segments[segIndex].delta = font.getUint16(); + } + + var offsetsCount = 0; + for (segIndex = 0; segIndex < segCount; segIndex++) { + segment = segments[segIndex]; + var rangeOffset = font.getUint16(); + if (!rangeOffset) { + segment.offsetIndex = -1; + continue; + } + + var offsetIndex = (rangeOffset >> 1) - (segCount - segIndex); + segment.offsetIndex = offsetIndex; + offsetsCount = Math.max(offsetsCount, offsetIndex + + segment.end - segment.start + 1); + } + + var offsets = []; + for (j = 0; j < offsetsCount; j++) { + offsets.push(font.getUint16()); + } + + for (segIndex = 0; segIndex < segCount; segIndex++) { + segment = segments[segIndex]; + start = segment.start; + var end = segment.end; + var delta = segment.delta; + offsetIndex = segment.offsetIndex; + + for (j = start; j <= end; j++) { + if (j === 0xFFFF) { + continue; + } + + glyphId = (offsetIndex < 0 ? + j : offsets[offsetIndex + j - start]); + glyphId = (glyphId + delta) & 0xFFFF; + if (glyphId === 0) { + continue; + } + mappings.push({ + charCode: j, + glyphId: glyphId + }); + } + } + } else if (format === 6) { + // Format 6 is a 2-bytes dense mapping, which means the font data + // lives glue together even if they are pretty far in the unicode + // table. (This looks weird, so I can have missed something), this + // works on Linux but seems to fails on Mac so let's rewrite the + // cmap table to a 3-1-4 style + var firstCode = font.getUint16(); + var entryCount = font.getUint16(); + + for (j = 0; j < entryCount; j++) { + glyphId = font.getUint16(); + var charCode = firstCode + j; + + mappings.push({ + charCode: charCode, + glyphId: glyphId + }); + } + } else { + error('cmap table has unsupported format: ' + format); + } + + // removing duplicate entries + mappings.sort(function (a, b) { + return a.charCode - b.charCode; + }); + for (i = 1; i < mappings.length; i++) { + if (mappings[i - 1].charCode === mappings[i].charCode) { + mappings.splice(i, 1); + i--; + } + } + + return { + platformId: potentialTable.platformId, + encodingId: potentialTable.encodingId, + mappings: mappings, + hasShortCmap: hasShortCmap + }; + } + + function sanitizeMetrics(font, header, metrics, numGlyphs) { + if (!header) { + if (metrics) { + metrics.data = null; + } + return; + } + + font.pos = (font.start ? font.start : 0) + header.offset; + font.pos += header.length - 2; + var numOfMetrics = font.getUint16(); + + if (numOfMetrics > numGlyphs) { + info('The numOfMetrics (' + numOfMetrics + ') should not be ' + + 'greater than the numGlyphs (' + numGlyphs + ')'); + // Reduce numOfMetrics if it is greater than numGlyphs + numOfMetrics = numGlyphs; + header.data[34] = (numOfMetrics & 0xff00) >> 8; + header.data[35] = numOfMetrics & 0x00ff; + } + + var numOfSidebearings = numGlyphs - numOfMetrics; + var numMissing = numOfSidebearings - + ((metrics.length - numOfMetrics * 4) >> 1); + + if (numMissing > 0) { + // For each missing glyph, we set both the width and lsb to 0 (zero). + // Since we need to add two properties for each glyph, this explains + // the use of |numMissing * 2| when initializing the typed array. + var entries = new Uint8Array(metrics.length + numMissing * 2); + entries.set(metrics.data); + metrics.data = entries; + } + } + + function sanitizeGlyph(source, sourceStart, sourceEnd, dest, destStart, + hintsValid) { + if (sourceEnd - sourceStart <= 12) { + // glyph with data less than 12 is invalid one + return 0; + } + var glyf = source.subarray(sourceStart, sourceEnd); + var contoursCount = (glyf[0] << 8) | glyf[1]; + if (contoursCount & 0x8000) { + // complex glyph, writing as is + dest.set(glyf, destStart); + return glyf.length; + } + + var i, j = 10, flagsCount = 0; + for (i = 0; i < contoursCount; i++) { + var endPoint = (glyf[j] << 8) | glyf[j + 1]; + flagsCount = endPoint + 1; + j += 2; + } + // skipping instructions + var instructionsStart = j; + var instructionsLength = (glyf[j] << 8) | glyf[j + 1]; + j += 2 + instructionsLength; + var instructionsEnd = j; + // validating flags + var coordinatesLength = 0; + for (i = 0; i < flagsCount; i++) { + var flag = glyf[j++]; + if (flag & 0xC0) { + // reserved flags must be zero, cleaning up + glyf[j - 1] = flag & 0x3F; + } + var xyLength = ((flag & 2) ? 1 : (flag & 16) ? 0 : 2) + + ((flag & 4) ? 1 : (flag & 32) ? 0 : 2); + coordinatesLength += xyLength; + if (flag & 8) { + var repeat = glyf[j++]; + i += repeat; + coordinatesLength += repeat * xyLength; + } + } + // glyph without coordinates will be rejected + if (coordinatesLength === 0) { + return 0; + } + var glyphDataLength = j + coordinatesLength; + if (glyphDataLength > glyf.length) { + // not enough data for coordinates + return 0; + } + if (!hintsValid && instructionsLength > 0) { + dest.set(glyf.subarray(0, instructionsStart), destStart); + dest.set([0, 0], destStart + instructionsStart); + dest.set(glyf.subarray(instructionsEnd, glyphDataLength), + destStart + instructionsStart + 2); + glyphDataLength -= instructionsLength; + if (glyf.length - glyphDataLength > 3) { + glyphDataLength = (glyphDataLength + 3) & ~3; + } + return glyphDataLength; + } + if (glyf.length - glyphDataLength > 3) { + // truncating and aligning to 4 bytes the long glyph data + glyphDataLength = (glyphDataLength + 3) & ~3; + dest.set(glyf.subarray(0, glyphDataLength), destStart); + return glyphDataLength; + } + // glyph data is fine + dest.set(glyf, destStart); + return glyf.length; + } + + function sanitizeHead(head, numGlyphs, locaLength) { + var data = head.data; + + // Validate version: + // Should always be 0x00010000 + var version = int32(data[0], data[1], data[2], data[3]); + if (version >> 16 !== 1) { + info('Attempting to fix invalid version in head table: ' + version); + data[0] = 0; + data[1] = 1; + data[2] = 0; + data[3] = 0; + } + + var indexToLocFormat = int16(data[50], data[51]); + if (indexToLocFormat < 0 || indexToLocFormat > 1) { + info('Attempting to fix invalid indexToLocFormat in head table: ' + + indexToLocFormat); + + // The value of indexToLocFormat should be 0 if the loca table + // consists of short offsets, and should be 1 if the loca table + // consists of long offsets. + // + // The number of entries in the loca table should be numGlyphs + 1. + // + // Using this information, we can work backwards to deduce if the + // size of each offset in the loca table, and thus figure out the + // appropriate value for indexToLocFormat. + + var numGlyphsPlusOne = numGlyphs + 1; + if (locaLength === numGlyphsPlusOne << 1) { + // 0x0000 indicates the loca table consists of short offsets + data[50] = 0; + data[51] = 0; + } else if (locaLength === numGlyphsPlusOne << 2) { + // 0x0001 indicates the loca table consists of long offsets + data[50] = 0; + data[51] = 1; + } else { + warn('Could not fix indexToLocFormat: ' + indexToLocFormat); + } + } + } + + function sanitizeGlyphLocations(loca, glyf, numGlyphs, + isGlyphLocationsLong, hintsValid, + dupFirstEntry) { + var itemSize, itemDecode, itemEncode; + if (isGlyphLocationsLong) { + itemSize = 4; + itemDecode = function fontItemDecodeLong(data, offset) { + return (data[offset] << 24) | (data[offset + 1] << 16) | + (data[offset + 2] << 8) | data[offset + 3]; + }; + itemEncode = function fontItemEncodeLong(data, offset, value) { + data[offset] = (value >>> 24) & 0xFF; + data[offset + 1] = (value >> 16) & 0xFF; + data[offset + 2] = (value >> 8) & 0xFF; + data[offset + 3] = value & 0xFF; + }; + } else { + itemSize = 2; + itemDecode = function fontItemDecode(data, offset) { + return (data[offset] << 9) | (data[offset + 1] << 1); + }; + itemEncode = function fontItemEncode(data, offset, value) { + data[offset] = (value >> 9) & 0xFF; + data[offset + 1] = (value >> 1) & 0xFF; + }; + } + var locaData = loca.data; + var locaDataSize = itemSize * (1 + numGlyphs); + // is loca.data too short or long? + if (locaData.length !== locaDataSize) { + locaData = new Uint8Array(locaDataSize); + locaData.set(loca.data.subarray(0, locaDataSize)); + loca.data = locaData; + } + // removing the invalid glyphs + var oldGlyfData = glyf.data; + var oldGlyfDataLength = oldGlyfData.length; + var newGlyfData = new Uint8Array(oldGlyfDataLength); + var startOffset = itemDecode(locaData, 0); + var writeOffset = 0; + var missingGlyphData = {}; + itemEncode(locaData, 0, writeOffset); + var i, j; + for (i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) { + var endOffset = itemDecode(locaData, j); + if (endOffset > oldGlyfDataLength && + ((oldGlyfDataLength + 3) & ~3) === endOffset) { + // Aspose breaks fonts by aligning the glyphs to the qword, but not + // the glyf table size, which makes last glyph out of range. + endOffset = oldGlyfDataLength; + } + if (endOffset > oldGlyfDataLength) { + // glyph end offset points outside glyf data, rejecting the glyph + itemEncode(locaData, j, writeOffset); + startOffset = endOffset; + continue; + } + + if (startOffset === endOffset) { + missingGlyphData[i] = true; + } + + var newLength = sanitizeGlyph(oldGlyfData, startOffset, endOffset, + newGlyfData, writeOffset, hintsValid); + writeOffset += newLength; + itemEncode(locaData, j, writeOffset); + startOffset = endOffset; + } + + if (writeOffset === 0) { + // glyf table cannot be empty -- redoing the glyf and loca tables + // to have single glyph with one point + var simpleGlyph = new Uint8Array( + [0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 49, 0]); + for (i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) { + itemEncode(locaData, j, simpleGlyph.length); + } + glyf.data = simpleGlyph; + return missingGlyphData; + } + + if (dupFirstEntry) { + var firstEntryLength = itemDecode(locaData, itemSize); + if (newGlyfData.length > firstEntryLength + writeOffset) { + glyf.data = newGlyfData.subarray(0, firstEntryLength + writeOffset); + } else { + glyf.data = new Uint8Array(firstEntryLength + writeOffset); + glyf.data.set(newGlyfData.subarray(0, writeOffset)); + } + glyf.data.set(newGlyfData.subarray(0, firstEntryLength), writeOffset); + itemEncode(loca.data, locaData.length - itemSize, + writeOffset + firstEntryLength); + } else { + glyf.data = newGlyfData.subarray(0, writeOffset); + } + return missingGlyphData; + } + + function readPostScriptTable(post, properties, maxpNumGlyphs) { + var start = (font.start ? font.start : 0) + post.offset; + font.pos = start; + + var length = post.length, end = start + length; + var version = font.getInt32(); + // skip rest to the tables + font.getBytes(28); + + var glyphNames; + var valid = true; + var i; + + switch (version) { + case 0x00010000: + glyphNames = MacStandardGlyphOrdering; + break; + case 0x00020000: + var numGlyphs = font.getUint16(); + if (numGlyphs !== maxpNumGlyphs) { + valid = false; + break; + } + var glyphNameIndexes = []; + for (i = 0; i < numGlyphs; ++i) { + var index = font.getUint16(); + if (index >= 32768) { + valid = false; + break; + } + glyphNameIndexes.push(index); + } + if (!valid) { + break; + } + var customNames = []; + var strBuf = []; + while (font.pos < end) { + var stringLength = font.getByte(); + strBuf.length = stringLength; + for (i = 0; i < stringLength; ++i) { + strBuf[i] = String.fromCharCode(font.getByte()); + } + customNames.push(strBuf.join('')); + } + glyphNames = []; + for (i = 0; i < numGlyphs; ++i) { + var j = glyphNameIndexes[i]; + if (j < 258) { + glyphNames.push(MacStandardGlyphOrdering[j]); + continue; + } + glyphNames.push(customNames[j - 258]); + } + break; + case 0x00030000: + break; + default: + warn('Unknown/unsupported post table version ' + version); + valid = false; + break; + } + properties.glyphNames = glyphNames; + return valid; + } + + function readNameTable(nameTable) { + var start = (font.start ? font.start : 0) + nameTable.offset; + font.pos = start; + + var names = [[], []]; + var length = nameTable.length, end = start + length; + var format = font.getUint16(); + var FORMAT_0_HEADER_LENGTH = 6; + if (format !== 0 || length < FORMAT_0_HEADER_LENGTH) { + // unsupported name table format or table "too" small + return names; + } + var numRecords = font.getUint16(); + var stringsStart = font.getUint16(); + var records = []; + var NAME_RECORD_LENGTH = 12; + var i, ii; + + for (i = 0; i < numRecords && + font.pos + NAME_RECORD_LENGTH <= end; i++) { + var r = { + platform: font.getUint16(), + encoding: font.getUint16(), + language: font.getUint16(), + name: font.getUint16(), + length: font.getUint16(), + offset: font.getUint16() + }; + // using only Macintosh and Windows platform/encoding names + if ((r.platform === 1 && r.encoding === 0 && r.language === 0) || + (r.platform === 3 && r.encoding === 1 && r.language === 0x409)) { + records.push(r); + } + } + for (i = 0, ii = records.length; i < ii; i++) { + var record = records[i]; + var pos = start + stringsStart + record.offset; + if (pos + record.length > end) { + continue; // outside of name table, ignoring + } + font.pos = pos; + var nameIndex = record.name; + if (record.encoding) { + // unicode + var str = ''; + for (var j = 0, jj = record.length; j < jj; j += 2) { + str += String.fromCharCode(font.getUint16()); + } + names[1][nameIndex] = str; + } else { + names[0][nameIndex] = bytesToString(font.getBytes(record.length)); + } + } + return names; + } + + var TTOpsStackDeltas = [ + 0, 0, 0, 0, 0, 0, 0, 0, -2, -2, -2, -2, 0, 0, -2, -5, + -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, -1, 0, -1, -1, -1, -1, + 1, -1, -999, 0, 1, 0, -1, -2, 0, -1, -2, -1, -1, 0, -1, -1, + 0, 0, -999, -999, -1, -1, -1, -1, -2, -999, -2, -2, -999, 0, -2, -2, + 0, 0, -2, 0, -2, 0, 0, 0, -2, -1, -1, 1, 1, 0, 0, -1, + -1, -1, -1, -1, -1, -1, 0, 0, -1, 0, -1, -1, 0, -999, -1, -1, + -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + -2, -999, -999, -999, -999, -999, -1, -1, -2, -2, 0, 0, 0, 0, -1, -1, + -999, -2, -2, 0, 0, -1, -2, -2, 0, 0, 0, -1, -1, -1, -2]; + // 0xC0-DF == -1 and 0xE0-FF == -2 + + function sanitizeTTProgram(table, ttContext) { + var data = table.data; + var i = 0, j, n, b, funcId, pc, lastEndf = 0, lastDeff = 0; + var stack = []; + var callstack = []; + var functionsCalled = []; + var tooComplexToFollowFunctions = + ttContext.tooComplexToFollowFunctions; + var inFDEF = false, ifLevel = 0, inELSE = 0; + for (var ii = data.length; i < ii;) { + var op = data[i++]; + // The TrueType instruction set docs can be found at + // https://developer.apple.com/fonts/TTRefMan/RM05/Chap5.html + if (op === 0x40) { // NPUSHB - pushes n bytes + n = data[i++]; + if (inFDEF || inELSE) { + i += n; + } else { + for (j = 0; j < n; j++) { + stack.push(data[i++]); + } + } + } else if (op === 0x41) { // NPUSHW - pushes n words + n = data[i++]; + if (inFDEF || inELSE) { + i += n * 2; + } else { + for (j = 0; j < n; j++) { + b = data[i++]; + stack.push((b << 8) | data[i++]); + } + } + } else if ((op & 0xF8) === 0xB0) { // PUSHB - pushes bytes + n = op - 0xB0 + 1; + if (inFDEF || inELSE) { + i += n; + } else { + for (j = 0; j < n; j++) { + stack.push(data[i++]); + } + } + } else if ((op & 0xF8) === 0xB8) { // PUSHW - pushes words + n = op - 0xB8 + 1; + if (inFDEF || inELSE) { + i += n * 2; + } else { + for (j = 0; j < n; j++) { + b = data[i++]; + stack.push((b << 8) | data[i++]); + } + } + } else if (op === 0x2B && !tooComplexToFollowFunctions) { // CALL + if (!inFDEF && !inELSE) { + // collecting inforamtion about which functions are used + funcId = stack[stack.length - 1]; + ttContext.functionsUsed[funcId] = true; + if (funcId in ttContext.functionsStackDeltas) { + stack.length += ttContext.functionsStackDeltas[funcId]; + } else if (funcId in ttContext.functionsDefined && + functionsCalled.indexOf(funcId) < 0) { + callstack.push({data: data, i: i, stackTop: stack.length - 1}); + functionsCalled.push(funcId); + pc = ttContext.functionsDefined[funcId]; + if (!pc) { + warn('TT: CALL non-existent function'); + ttContext.hintsValid = false; + return; + } + data = pc.data; + i = pc.i; + } + } + } else if (op === 0x2C && !tooComplexToFollowFunctions) { // FDEF + if (inFDEF || inELSE) { + warn('TT: nested FDEFs not allowed'); + tooComplexToFollowFunctions = true; + } + inFDEF = true; + // collecting inforamtion about which functions are defined + lastDeff = i; + funcId = stack.pop(); + ttContext.functionsDefined[funcId] = {data: data, i: i}; + } else if (op === 0x2D) { // ENDF - end of function + if (inFDEF) { + inFDEF = false; + lastEndf = i; + } else { + pc = callstack.pop(); + if (!pc) { + warn('TT: ENDF bad stack'); + ttContext.hintsValid = false; + return; + } + funcId = functionsCalled.pop(); + data = pc.data; + i = pc.i; + ttContext.functionsStackDeltas[funcId] = + stack.length - pc.stackTop; + } + } else if (op === 0x89) { // IDEF - instruction definition + if (inFDEF || inELSE) { + warn('TT: nested IDEFs not allowed'); + tooComplexToFollowFunctions = true; + } + inFDEF = true; + // recording it as a function to track ENDF + lastDeff = i; + } else if (op === 0x58) { // IF + ++ifLevel; + } else if (op === 0x1B) { // ELSE + inELSE = ifLevel; + } else if (op === 0x59) { // EIF + if (inELSE === ifLevel) { + inELSE = 0; + } + --ifLevel; + } else if (op === 0x1C) { // JMPR + if (!inFDEF && !inELSE) { + var offset = stack[stack.length - 1]; + // only jumping forward to prevent infinite loop + if (offset > 0) { + i += offset - 1; + } + } + } + // Adjusting stack not extactly, but just enough to get function id + if (!inFDEF && !inELSE) { + var stackDelta = op <= 0x8E ? TTOpsStackDeltas[op] : + op >= 0xC0 && op <= 0xDF ? -1 : op >= 0xE0 ? -2 : 0; + if (op >= 0x71 && op <= 0x75) { + n = stack.pop(); + if (n === n) { + stackDelta = -n * 2; + } + } + while (stackDelta < 0 && stack.length > 0) { + stack.pop(); + stackDelta++; + } + while (stackDelta > 0) { + stack.push(NaN); // pushing any number into stack + stackDelta--; + } + } + } + ttContext.tooComplexToFollowFunctions = tooComplexToFollowFunctions; + var content = [data]; + if (i > data.length) { + content.push(new Uint8Array(i - data.length)); + } + if (lastDeff > lastEndf) { + warn('TT: complementing a missing function tail'); + // new function definition started, but not finished + // complete function by [CLEAR, ENDF] + content.push(new Uint8Array([0x22, 0x2D])); + } + foldTTTable(table, content); + } + + function checkInvalidFunctions(ttContext, maxFunctionDefs) { + if (ttContext.tooComplexToFollowFunctions) { + return; + } + if (ttContext.functionsDefined.length > maxFunctionDefs) { + warn('TT: more functions defined than expected'); + ttContext.hintsValid = false; + return; + } + for (var j = 0, jj = ttContext.functionsUsed.length; j < jj; j++) { + if (j > maxFunctionDefs) { + warn('TT: invalid function id: ' + j); + ttContext.hintsValid = false; + return; + } + if (ttContext.functionsUsed[j] && !ttContext.functionsDefined[j]) { + warn('TT: undefined function: ' + j); + ttContext.hintsValid = false; + return; + } + } + } + + function foldTTTable(table, content) { + if (content.length > 1) { + // concatenating the content items + var newLength = 0; + var j, jj; + for (j = 0, jj = content.length; j < jj; j++) { + newLength += content[j].length; + } + newLength = (newLength + 3) & ~3; + var result = new Uint8Array(newLength); + var pos = 0; + for (j = 0, jj = content.length; j < jj; j++) { + result.set(content[j], pos); + pos += content[j].length; + } + table.data = result; + table.length = newLength; + } + } + + function sanitizeTTPrograms(fpgm, prep, cvt) { + var ttContext = { + functionsDefined: [], + functionsUsed: [], + functionsStackDeltas: [], + tooComplexToFollowFunctions: false, + hintsValid: true + }; + if (fpgm) { + sanitizeTTProgram(fpgm, ttContext); + } + if (prep) { + sanitizeTTProgram(prep, ttContext); + } + if (fpgm) { + checkInvalidFunctions(ttContext, maxFunctionDefs); + } + if (cvt && (cvt.length & 1)) { + var cvtData = new Uint8Array(cvt.length + 1); + cvtData.set(cvt.data); + cvt.data = cvtData; + } + return ttContext.hintsValid; + } + + // The following steps modify the original font data, making copy + font = new Stream(new Uint8Array(font.getBytes())); + + var VALID_TABLES = ['OS/2', 'cmap', 'head', 'hhea', 'hmtx', 'maxp', + 'name', 'post', 'loca', 'glyf', 'fpgm', 'prep', 'cvt ', 'CFF ']; + + var header = readOpenTypeHeader(font); + var numTables = header.numTables; + var cff, cffFile; + + var tables = { 'OS/2': null, cmap: null, head: null, hhea: null, + hmtx: null, maxp: null, name: null, post: null }; + var table; + for (var i = 0; i < numTables; i++) { + table = readTableEntry(font); + if (VALID_TABLES.indexOf(table.tag) < 0) { + continue; // skipping table if it's not a required or optional table + } + if (table.length === 0) { + continue; // skipping empty tables + } + tables[table.tag] = table; + } + + var isTrueType = !tables['CFF ']; + if (!isTrueType) { + // OpenType font + if (header.version === 'OTTO' || + !tables.head || !tables.hhea || !tables.maxp || !tables.post) { + // no major tables: throwing everything at CFFFont + cffFile = new Stream(tables['CFF '].data); + cff = new CFFFont(cffFile, properties); + + return this.convert(name, cff, properties); + } + + delete tables.glyf; + delete tables.loca; + delete tables.fpgm; + delete tables.prep; + delete tables['cvt ']; + this.isOpenType = true; + } else { + if (!tables.glyf || !tables.loca) { + error('Required "glyf" or "loca" tables are not found'); + } + this.isOpenType = false; + } + + if (!tables.maxp) { + error('Required "maxp" table is not found'); + } + + font.pos = (font.start || 0) + tables.maxp.offset; + var version = font.getInt32(); + var numGlyphs = font.getUint16(); + var maxFunctionDefs = 0; + if (version >= 0x00010000 && tables.maxp.length >= 22) { + // maxZones can be invalid + font.pos += 8; + var maxZones = font.getUint16(); + if (maxZones > 2) { // reset to 2 if font has invalid maxZones + tables.maxp.data[14] = 0; + tables.maxp.data[15] = 2; + } + font.pos += 4; + maxFunctionDefs = font.getUint16(); + } + + var dupFirstEntry = false; + if (properties.type === 'CIDFontType2' && properties.toUnicode && + properties.toUnicode.get(0) > '\u0000') { + // oracle's defect (see 3427), duplicating first entry + dupFirstEntry = true; + numGlyphs++; + tables.maxp.data[4] = numGlyphs >> 8; + tables.maxp.data[5] = numGlyphs & 255; + } + + var hintsValid = sanitizeTTPrograms(tables.fpgm, tables.prep, + tables['cvt '], maxFunctionDefs); + if (!hintsValid) { + delete tables.fpgm; + delete tables.prep; + delete tables['cvt ']; + } + + // Ensure the hmtx table contains the advance width and + // sidebearings information for numGlyphs in the maxp table + sanitizeMetrics(font, tables.hhea, tables.hmtx, numGlyphs); + + if (!tables.head) { + error('Required "head" table is not found'); + } + + sanitizeHead(tables.head, numGlyphs, isTrueType ? tables.loca.length : 0); + + var missingGlyphs = {}; + if (isTrueType) { + var isGlyphLocationsLong = int16(tables.head.data[50], + tables.head.data[51]); + missingGlyphs = sanitizeGlyphLocations(tables.loca, tables.glyf, + numGlyphs, isGlyphLocationsLong, + hintsValid, dupFirstEntry); + } + + if (!tables.hhea) { + error('Required "hhea" table is not found'); + } + + // Sanitizer reduces the glyph advanceWidth to the maxAdvanceWidth + // Sometimes it's 0. That needs to be fixed + if (tables.hhea.data[10] === 0 && tables.hhea.data[11] === 0) { + tables.hhea.data[10] = 0xFF; + tables.hhea.data[11] = 0xFF; + } + + // The 'post' table has glyphs names. + if (tables.post) { + var valid = readPostScriptTable(tables.post, properties, numGlyphs); + if (!valid) { + tables.post = null; + } + } + + var charCodeToGlyphId = [], charCode, toUnicode = properties.toUnicode; + + function hasGlyph(glyphId, charCode) { + if (!missingGlyphs[glyphId]) { + return true; + } + if (charCode >= 0 && toUnicode.has(charCode)) { + return true; + } + return false; + } + + if (properties.type === 'CIDFontType2') { + var cidToGidMap = properties.cidToGidMap || []; + var isCidToGidMapEmpty = cidToGidMap.length === 0; + + properties.cMap.forEach(function(charCode, cid) { + assert(cid <= 0xffff, 'Max size of CID is 65,535'); + var glyphId = -1; + if (isCidToGidMapEmpty) { + glyphId = charCode; + } else if (cidToGidMap[cid] !== undefined) { + glyphId = cidToGidMap[cid]; + } + + if (glyphId >= 0 && glyphId < numGlyphs && + hasGlyph(glyphId, charCode)) { + charCodeToGlyphId[charCode] = glyphId; + } + }); + if (dupFirstEntry) { + charCodeToGlyphId[0] = numGlyphs - 1; + } + } else { + // Most of the following logic in this code branch is based on the + // 9.6.6.4 of the PDF spec. + var cmapTable = readCmapTable(tables.cmap, font, this.isSymbolicFont); + var cmapPlatformId = cmapTable.platformId; + var cmapEncodingId = cmapTable.encodingId; + var cmapMappings = cmapTable.mappings; + var cmapMappingsLength = cmapMappings.length; + var hasEncoding = properties.differences.length || + !!properties.baseEncodingName; + + // The spec seems to imply that if the font is symbolic the encoding + // should be ignored, this doesn't appear to work for 'preistabelle.pdf' + // where the the font is symbolic and it has an encoding. + if (hasEncoding && + (cmapPlatformId === 3 && cmapEncodingId === 1 || + cmapPlatformId === 1 && cmapEncodingId === 0) || + (cmapPlatformId === -1 && cmapEncodingId === -1 && // Temporary hack + !!Encodings[properties.baseEncodingName])) { // Temporary hack + // When no preferred cmap table was found and |baseEncodingName| is + // one of the predefined encodings, we seem to obtain a better + // |charCodeToGlyphId| map from the code below (fixes bug 1057544). + // TODO: Note that this is a hack which should be removed as soon as + // we have proper support for more exotic cmap tables. + + var baseEncoding = []; + if (properties.baseEncodingName === 'MacRomanEncoding' || + properties.baseEncodingName === 'WinAnsiEncoding') { + baseEncoding = Encodings[properties.baseEncodingName]; + } + for (charCode = 0; charCode < 256; charCode++) { + var glyphName; + if (this.differences && charCode in this.differences) { + glyphName = this.differences[charCode]; + } else if (charCode in baseEncoding && + baseEncoding[charCode] !== '') { + glyphName = baseEncoding[charCode]; + } else { + glyphName = Encodings.StandardEncoding[charCode]; + } + if (!glyphName) { + continue; + } + var unicodeOrCharCode; + if (cmapPlatformId === 3 && cmapEncodingId === 1) { + unicodeOrCharCode = GlyphsUnicode[glyphName]; + } else if (cmapPlatformId === 1 && cmapEncodingId === 0) { + // TODO: the encoding needs to be updated with mac os table. + unicodeOrCharCode = Encodings.MacRomanEncoding.indexOf(glyphName); + } + + var found = false; + for (i = 0; i < cmapMappingsLength; ++i) { + if (cmapMappings[i].charCode === unicodeOrCharCode && + hasGlyph(cmapMappings[i].glyphId, unicodeOrCharCode)) { + charCodeToGlyphId[charCode] = cmapMappings[i].glyphId; + found = true; + break; + } + } + if (!found && properties.glyphNames) { + // Try to map using the post table. There are currently no known + // pdfs that this fixes. + var glyphId = properties.glyphNames.indexOf(glyphName); + if (glyphId > 0 && hasGlyph(glyphId, -1)) { + charCodeToGlyphId[charCode] = glyphId; + } + } + } + } else if (cmapPlatformId === 0 && cmapEncodingId === 0) { + // Default Unicode semantics, use the charcodes as is. + for (i = 0; i < cmapMappingsLength; ++i) { + charCodeToGlyphId[cmapMappings[i].charCode] = + cmapMappings[i].glyphId; + } + } else { + // For (3, 0) cmap tables: + // The charcode key being stored in charCodeToGlyphId is the lower + // byte of the two-byte charcodes of the cmap table since according to + // the spec: 'each byte from the string shall be prepended with the + // high byte of the range [of charcodes in the cmap table], to form + // a two-byte character, which shall be used to select the + // associated glyph description from the subtable'. + // + // For (1, 0) cmap tables: + // 'single bytes from the string shall be used to look up the + // associated glyph descriptions from the subtable'. This means + // charcodes in the cmap will be single bytes, so no-op since + // glyph.charCode & 0xFF === glyph.charCode + for (i = 0; i < cmapMappingsLength; ++i) { + charCode = cmapMappings[i].charCode & 0xFF; + charCodeToGlyphId[charCode] = cmapMappings[i].glyphId; + } + } + } + + if (charCodeToGlyphId.length === 0) { + // defines at least one glyph + charCodeToGlyphId[0] = 0; + } + + // Converting glyphs and ids into font's cmap table + var newMapping = adjustMapping(charCodeToGlyphId, properties); + this.toFontChar = newMapping.toFontChar; + tables.cmap = { + tag: 'cmap', + data: createCmapTable(newMapping.charCodeToGlyphId) + }; + + if (!tables['OS/2'] || !validateOS2Table(tables['OS/2'])) { + // extract some more font properties from the OpenType head and + // hhea tables; yMin and descent value are always negative + var override = { + unitsPerEm: int16(tables.head.data[18], tables.head.data[19]), + yMax: int16(tables.head.data[42], tables.head.data[43]), + yMin: int16(tables.head.data[38], tables.head.data[39]) - 0x10000, + ascent: int16(tables.hhea.data[4], tables.hhea.data[5]), + descent: int16(tables.hhea.data[6], tables.hhea.data[7]) - 0x10000 + }; + + tables['OS/2'] = { + tag: 'OS/2', + data: createOS2Table(properties, newMapping.charCodeToGlyphId, + override) + }; + } + + // Rewrite the 'post' table if needed + if (!tables.post) { + tables.post = { + tag: 'post', + data: createPostTable(properties) + }; + } + + if (!isTrueType) { + try { + // Trying to repair CFF file + cffFile = new Stream(tables['CFF '].data); + var parser = new CFFParser(cffFile, properties); + cff = parser.parse(); + var compiler = new CFFCompiler(cff); + tables['CFF '].data = compiler.compile(); + } catch (e) { + warn('Failed to compile font ' + properties.loadedName); + } + } + + // Re-creating 'name' table + if (!tables.name) { + tables.name = { + tag: 'name', + data: createNameTable(this.name) + }; + } else { + // ... using existing 'name' table as prototype + var namePrototype = readNameTable(tables.name); + tables.name.data = createNameTable(name, namePrototype); + } + + var builder = new OpenTypeFileBuilder(header.version); + for (var tableTag in tables) { + builder.addTable(tableTag, tables[tableTag].data); + } + return builder.toArray(); + }, + + convert: function Font_convert(fontName, font, properties) { + // TODO: Check the charstring widths to determine this. + properties.fixedPitch = false; + + var mapping = font.getGlyphMapping(properties); + var newMapping = adjustMapping(mapping, properties); + this.toFontChar = newMapping.toFontChar; + var numGlyphs = font.numGlyphs; + + function getCharCodes(charCodeToGlyphId, glyphId) { + var charCodes = null; + for (var charCode in charCodeToGlyphId) { + if (glyphId === charCodeToGlyphId[charCode]) { + if (!charCodes) { + charCodes = []; + } + charCodes.push(charCode | 0); + } + } + return charCodes; + } + + function createCharCode(charCodeToGlyphId, glyphId) { + for (var charCode in charCodeToGlyphId) { + if (glyphId === charCodeToGlyphId[charCode]) { + return charCode | 0; + } + } + newMapping.charCodeToGlyphId[newMapping.nextAvailableFontCharCode] = + glyphId; + return newMapping.nextAvailableFontCharCode++; + } + + var seacs = font.seacs; + if (SEAC_ANALYSIS_ENABLED && seacs && seacs.length) { + var matrix = properties.fontMatrix || FONT_IDENTITY_MATRIX; + var charset = font.getCharset(); + var seacMap = Object.create(null); + for (var glyphId in seacs) { + glyphId |= 0; + var seac = seacs[glyphId]; + var baseGlyphName = Encodings.StandardEncoding[seac[2]]; + var accentGlyphName = Encodings.StandardEncoding[seac[3]]; + var baseGlyphId = charset.indexOf(baseGlyphName); + var accentGlyphId = charset.indexOf(accentGlyphName); + if (baseGlyphId < 0 || accentGlyphId < 0) { + continue; + } + var accentOffset = { + x: seac[0] * matrix[0] + seac[1] * matrix[2] + matrix[4], + y: seac[0] * matrix[1] + seac[1] * matrix[3] + matrix[5] + }; + + var charCodes = getCharCodes(mapping, glyphId); + if (!charCodes) { + // There's no point in mapping it if the char code was never mapped + // to begin with. + continue; + } + for (var i = 0, ii = charCodes.length; i < ii; i++) { + var charCode = charCodes[i]; + // Find a fontCharCode that maps to the base and accent glyphs. + // If one doesn't exists, create it. + var charCodeToGlyphId = newMapping.charCodeToGlyphId; + var baseFontCharCode = createCharCode(charCodeToGlyphId, + baseGlyphId); + var accentFontCharCode = createCharCode(charCodeToGlyphId, + accentGlyphId); + seacMap[charCode] = { + baseFontCharCode: baseFontCharCode, + accentFontCharCode: accentFontCharCode, + accentOffset: accentOffset + }; + } + } + properties.seacMap = seacMap; + } + + var unitsPerEm = 1 / (properties.fontMatrix || FONT_IDENTITY_MATRIX)[0]; + + var builder = new OpenTypeFileBuilder('\x4F\x54\x54\x4F'); + // PostScript Font Program + builder.addTable('CFF ', font.data); + // OS/2 and Windows Specific metrics + builder.addTable('OS/2', createOS2Table(properties, + newMapping.charCodeToGlyphId)); + // Character to glyphs mapping + builder.addTable('cmap', createCmapTable(newMapping.charCodeToGlyphId)); + // Font header + builder.addTable('head', + '\x00\x01\x00\x00' + // Version number + '\x00\x00\x10\x00' + // fontRevision + '\x00\x00\x00\x00' + // checksumAdjustement + '\x5F\x0F\x3C\xF5' + // magicNumber + '\x00\x00' + // Flags + safeString16(unitsPerEm) + // unitsPerEM + '\x00\x00\x00\x00\x9e\x0b\x7e\x27' + // creation date + '\x00\x00\x00\x00\x9e\x0b\x7e\x27' + // modifification date + '\x00\x00' + // xMin + safeString16(properties.descent) + // yMin + '\x0F\xFF' + // xMax + safeString16(properties.ascent) + // yMax + string16(properties.italicAngle ? 2 : 0) + // macStyle + '\x00\x11' + // lowestRecPPEM + '\x00\x00' + // fontDirectionHint + '\x00\x00' + // indexToLocFormat + '\x00\x00'); // glyphDataFormat + + // Horizontal header + builder.addTable('hhea', + '\x00\x01\x00\x00' + // Version number + safeString16(properties.ascent) + // Typographic Ascent + safeString16(properties.descent) + // Typographic Descent + '\x00\x00' + // Line Gap + '\xFF\xFF' + // advanceWidthMax + '\x00\x00' + // minLeftSidebearing + '\x00\x00' + // minRightSidebearing + '\x00\x00' + // xMaxExtent + safeString16(properties.capHeight) + // caretSlopeRise + safeString16(Math.tan(properties.italicAngle) * + properties.xHeight) + // caretSlopeRun + '\x00\x00' + // caretOffset + '\x00\x00' + // -reserved- + '\x00\x00' + // -reserved- + '\x00\x00' + // -reserved- + '\x00\x00' + // -reserved- + '\x00\x00' + // metricDataFormat + string16(numGlyphs)); // Number of HMetrics + + // Horizontal metrics + builder.addTable('hmtx', (function fontFieldsHmtx() { + var charstrings = font.charstrings; + var cffWidths = font.cff ? font.cff.widths : null; + var hmtx = '\x00\x00\x00\x00'; // Fake .notdef + for (var i = 1, ii = numGlyphs; i < ii; i++) { + var width = 0; + if (charstrings) { + var charstring = charstrings[i - 1]; + width = 'width' in charstring ? charstring.width : 0; + } else if (cffWidths) { + width = Math.ceil(cffWidths[i] || 0); + } + hmtx += string16(width) + string16(0); + } + return hmtx; + })()); + + // Maximum profile + builder.addTable('maxp', + '\x00\x00\x50\x00' + // Version number + string16(numGlyphs)); // Num of glyphs + + // Naming tables + builder.addTable('name', createNameTable(fontName)); + + // PostScript informations + builder.addTable('post', createPostTable(properties)); + + return builder.toArray(); + }, + + /** + * Builds a char code to unicode map based on section 9.10 of the spec. + * @param {Object} properties Font properties object. + * @return {Object} A ToUnicodeMap object. + */ + buildToUnicode: function Font_buildToUnicode(properties) { + // Section 9.10.2 Mapping Character Codes to Unicode Values + if (properties.toUnicode && properties.toUnicode.length !== 0) { + return properties.toUnicode; + } + // According to the spec if the font is a simple font we should only map + // to unicode if the base encoding is MacRoman, MacExpert, or WinAnsi or + // the differences array only contains adobe standard or symbol set names, + // in pratice it seems better to always try to create a toUnicode + // map based of the default encoding. + var toUnicode, charcode; + if (!properties.composite /* is simple font */) { + toUnicode = []; + var encoding = properties.defaultEncoding.slice(); + var baseEncodingName = properties.baseEncodingName; + // Merge in the differences array. + var differences = properties.differences; + for (charcode in differences) { + encoding[charcode] = differences[charcode]; + } + for (charcode in encoding) { + // a) Map the character code to a character name. + var glyphName = encoding[charcode]; + // b) Look up the character name in the Adobe Glyph List (see the + // Bibliography) to obtain the corresponding Unicode value. + if (glyphName === '') { + continue; + } else if (GlyphsUnicode[glyphName] === undefined) { + // (undocumented) c) Few heuristics to recognize unknown glyphs + // NOTE: Adobe Reader does not do this step, but OSX Preview does + var code = 0; + switch (glyphName[0]) { + case 'G': // Gxx glyph + if (glyphName.length === 3) { + code = parseInt(glyphName.substr(1), 16); + } + break; + case 'g': // g00xx glyph + if (glyphName.length === 5) { + code = parseInt(glyphName.substr(1), 16); + } + break; + case 'C': // Cddd glyph + case 'c': // cddd glyph + if (glyphName.length >= 3) { + code = +glyphName.substr(1); + } + break; + } + if (code) { + // If |baseEncodingName| is one the predefined encodings, + // and |code| equals |charcode|, using the glyph defined in the + // baseEncoding seems to yield a better |toUnicode| mapping + // (fixes issue 5070). + if (baseEncodingName && code === +charcode) { + var baseEncoding = Encodings[baseEncodingName]; + if (baseEncoding && (glyphName = baseEncoding[charcode])) { + toUnicode[charcode] = + String.fromCharCode(GlyphsUnicode[glyphName]); + continue; + } + } + toUnicode[charcode] = String.fromCharCode(code); + } + continue; + } + toUnicode[charcode] = String.fromCharCode(GlyphsUnicode[glyphName]); + } + return new ToUnicodeMap(toUnicode); + } + // If the font is a composite font that uses one of the predefined CMaps + // listed in Table 118 (except Identity–H and Identity–V) or whose + // descendant CIDFont uses the Adobe-GB1, Adobe-CNS1, Adobe-Japan1, or + // Adobe-Korea1 character collection: + if (properties.composite && ( + (properties.cMap.builtInCMap && + !(properties.cMap instanceof IdentityCMap)) || + (properties.cidSystemInfo.registry === 'Adobe' && + (properties.cidSystemInfo.ordering === 'GB1' || + properties.cidSystemInfo.ordering === 'CNS1' || + properties.cidSystemInfo.ordering === 'Japan1' || + properties.cidSystemInfo.ordering === 'Korea1')))) { + // Then: + // a) Map the character code to a character identifier (CID) according + // to the font’s CMap. + // b) Obtain the registry and ordering of the character collection used + // by the font’s CMap (for example, Adobe and Japan1) from its + // CIDSystemInfo dictionary. + var registry = properties.cidSystemInfo.registry; + var ordering = properties.cidSystemInfo.ordering; + // c) Construct a second CMap name by concatenating the registry and + // ordering obtained in step (b) in the format registry–ordering–UCS2 + // (for example, Adobe–Japan1–UCS2). + var ucs2CMapName = new Name(registry + '-' + ordering + '-UCS2'); + // d) Obtain the CMap with the name constructed in step (c) (available + // from the ASN Web site; see the Bibliography). + var ucs2CMap = CMapFactory.create(ucs2CMapName, + { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null); + var cMap = properties.cMap; + toUnicode = []; + cMap.forEach(function(charcode, cid) { + assert(cid <= 0xffff, 'Max size of CID is 65,535'); + // e) Map the CID obtained in step (a) according to the CMap obtained + // in step (d), producing a Unicode value. + var ucs2 = ucs2CMap.lookup(cid); + if (ucs2) { + toUnicode[charcode] = + String.fromCharCode((ucs2.charCodeAt(0) << 8) + + ucs2.charCodeAt(1)); + } + }); + return new ToUnicodeMap(toUnicode); + } + + // The viewer's choice, just use an identity map. + return new IdentityToUnicodeMap(properties.firstChar, + properties.lastChar); + }, + + get spaceWidth() { + if ('_shadowWidth' in this) { + return this._shadowWidth; + } + + // trying to estimate space character width + var possibleSpaceReplacements = ['space', 'minus', 'one', 'i']; + var width; + for (var i = 0, ii = possibleSpaceReplacements.length; i < ii; i++) { + var glyphName = possibleSpaceReplacements[i]; + // if possible, getting width by glyph name + if (glyphName in this.widths) { + width = this.widths[glyphName]; + break; + } + var glyphUnicode = GlyphsUnicode[glyphName]; + // finding the charcode via unicodeToCID map + var charcode = 0; + if (this.composite) { + if (this.cMap.contains(glyphUnicode)) { + charcode = this.cMap.lookup(glyphUnicode); + } + } + // ... via toUnicode map + if (!charcode && 'toUnicode' in this) { + charcode = this.toUnicode.charCodeOf(glyphUnicode); + } + // setting it to unicode if negative or undefined + if (charcode <= 0) { + charcode = glyphUnicode; + } + // trying to get width via charcode + width = this.widths[charcode]; + if (width) { + break; // the non-zero width found + } + } + width = width || this.defaultWidth; + // Do not shadow the property here. See discussion: + // https://github.com/mozilla/pdf.js/pull/2127#discussion_r1662280 + this._shadowWidth = width; + return width; + }, + + charToGlyph: function Font_charToGlyph(charcode) { + var fontCharCode, width, operatorListId; + + var widthCode = charcode; + if (this.cMap && this.cMap.contains(charcode)) { + widthCode = this.cMap.lookup(charcode); + } + width = this.widths[widthCode]; + width = isNum(width) ? width : this.defaultWidth; + var vmetric = this.vmetrics && this.vmetrics[widthCode]; + + var unicode = this.toUnicode.get(charcode) || charcode; + if (typeof unicode === 'number') { + unicode = String.fromCharCode(unicode); + } + + // First try the toFontChar map, if it's not there then try falling + // back to the char code. + fontCharCode = this.toFontChar[charcode] || charcode; + if (this.missingFile) { + fontCharCode = mapSpecialUnicodeValues(fontCharCode); + } + + if (this.isType3Font) { + // Font char code in this case is actually a glyph name. + operatorListId = fontCharCode; + } + + var accent = null; + if (this.seacMap && this.seacMap[charcode]) { + var seac = this.seacMap[charcode]; + fontCharCode = seac.baseFontCharCode; + accent = { + fontChar: String.fromCharCode(seac.accentFontCharCode), + offset: seac.accentOffset + }; + } + + var fontChar = String.fromCharCode(fontCharCode); + + var glyph = this.glyphCache[charcode]; + if (!glyph || + !glyph.matchesForCache(fontChar, unicode, accent, width, vmetric, + operatorListId)) { + glyph = new Glyph(fontChar, unicode, accent, width, vmetric, + operatorListId); + this.glyphCache[charcode] = glyph; + } + return glyph; + }, + + charsToGlyphs: function Font_charsToGlyphs(chars) { + var charsCache = this.charsCache; + var glyphs, glyph, charcode; + + // if we translated this string before, just grab it from the cache + if (charsCache) { + glyphs = charsCache[chars]; + if (glyphs) { + return glyphs; + } + } + + // lazily create the translation cache + if (!charsCache) { + charsCache = this.charsCache = Object.create(null); + } + + glyphs = []; + var charsCacheKey = chars; + var i = 0, ii; + + if (this.cMap) { + // composite fonts have multi-byte strings convert the string from + // single-byte to multi-byte + var c = {}; + while (i < chars.length) { + this.cMap.readCharCode(chars, i, c); + charcode = c.charcode; + var length = c.length; + i += length; + glyph = this.charToGlyph(charcode); + glyphs.push(glyph); + // placing null after each word break charcode (ASCII SPACE) + // Ignore occurences of 0x20 in multiple-byte codes. + if (length === 1 && chars.charCodeAt(i - 1) === 0x20) { + glyphs.push(null); + } + } + } else { + for (i = 0, ii = chars.length; i < ii; ++i) { + charcode = chars.charCodeAt(i); + glyph = this.charToGlyph(charcode); + glyphs.push(glyph); + if (charcode === 0x20) { + glyphs.push(null); + } + } + } + + // Enter the translated string into the cache + return (charsCache[charsCacheKey] = glyphs); + } + }; + + return Font; +})(); + +var ErrorFont = (function ErrorFontClosure() { + function ErrorFont(error) { + this.error = error; + this.loadedName = 'g_font_error'; + this.loading = false; + } + + ErrorFont.prototype = { + charsToGlyphs: function ErrorFont_charsToGlyphs() { + return []; + }, + exportData: function ErrorFont_exportData() { + return {error: this.error}; + } + }; + + return ErrorFont; +})(); + +/** + * Shared logic for building a char code to glyph id mapping for Type1 and + * simple CFF fonts. See section 9.6.6.2 of the spec. + * @param {Object} properties Font properties object. + * @param {Object} builtInEncoding The encoding contained within the actual font + * data. + * @param {Array} Array of glyph names where the index is the glyph ID. + * @returns {Object} A char code to glyph ID map. + */ +function type1FontGlyphMapping(properties, builtInEncoding, glyphNames) { + var charCodeToGlyphId = Object.create(null); + var glyphId, charCode, baseEncoding; + + if (properties.baseEncodingName) { + // If a valid base encoding name was used, the mapping is initialized with + // that. + baseEncoding = Encodings[properties.baseEncodingName]; + for (charCode = 0; charCode < baseEncoding.length; charCode++) { + glyphId = glyphNames.indexOf(baseEncoding[charCode]); + if (glyphId >= 0) { + charCodeToGlyphId[charCode] = glyphId; + } else { + charCodeToGlyphId[charCode] = 0; // notdef + } + } + } else if (!!(properties.flags & FontFlags.Symbolic)) { + // For a symbolic font the encoding should be the fonts built-in + // encoding. + for (charCode in builtInEncoding) { + charCodeToGlyphId[charCode] = builtInEncoding[charCode]; + } + } else { + // For non-symbolic fonts that don't have a base encoding the standard + // encoding should be used. + baseEncoding = Encodings.StandardEncoding; + for (charCode = 0; charCode < baseEncoding.length; charCode++) { + glyphId = glyphNames.indexOf(baseEncoding[charCode]); + if (glyphId >= 0) { + charCodeToGlyphId[charCode] = glyphId; + } else { + charCodeToGlyphId[charCode] = 0; // notdef + } + } + } + + // Lastly, merge in the differences. + var differences = properties.differences; + if (differences) { + for (charCode in differences) { + var glyphName = differences[charCode]; + glyphId = glyphNames.indexOf(glyphName); + if (glyphId >= 0) { + charCodeToGlyphId[charCode] = glyphId; + } else { + charCodeToGlyphId[charCode] = 0; // notdef + } + } + } + return charCodeToGlyphId; +} + +/* + * CharStrings are encoded following the the CharString Encoding sequence + * describe in Chapter 6 of the "Adobe Type1 Font Format" specification. + * The value in a byte indicates a command, a number, or subsequent bytes + * that are to be interpreted in a special way. + * + * CharString Number Encoding: + * A CharString byte containing the values from 32 through 255 inclusive + * indicate an integer. These values are decoded in four ranges. + * + * 1. A CharString byte containing a value, v, between 32 and 246 inclusive, + * indicate the integer v - 139. Thus, the integer values from -107 through + * 107 inclusive may be encoded in single byte. + * + * 2. A CharString byte containing a value, v, between 247 and 250 inclusive, + * indicates an integer involving the next byte, w, according to the formula: + * [(v - 247) x 256] + w + 108 + * + * 3. A CharString byte containing a value, v, between 251 and 254 inclusive, + * indicates an integer involving the next byte, w, according to the formula: + * -[(v - 251) * 256] - w - 108 + * + * 4. A CharString containing the value 255 indicates that the next 4 bytes + * are a two complement signed integer. The first of these bytes contains the + * highest order bits, the second byte contains the next higher order bits + * and the fourth byte contain the lowest order bits. + * + * + * CharString Command Encoding: + * CharStrings commands are encoded in 1 or 2 bytes. + * + * Single byte commands are encoded in 1 byte that contains a value between + * 0 and 31 inclusive. + * If a command byte contains the value 12, then the value in the next byte + * indicates a command. This "escape" mechanism allows many extra commands + * to be encoded and this encoding technique helps to minimize the length of + * the charStrings. + */ +var Type1CharString = (function Type1CharStringClosure() { + var COMMAND_MAP = { + 'hstem': [1], + 'vstem': [3], + 'vmoveto': [4], + 'rlineto': [5], + 'hlineto': [6], + 'vlineto': [7], + 'rrcurveto': [8], + 'callsubr': [10], + 'flex': [12, 35], + 'drop' : [12, 18], + 'endchar': [14], + 'rmoveto': [21], + 'hmoveto': [22], + 'vhcurveto': [30], + 'hvcurveto': [31] + }; + + function Type1CharString() { + this.width = 0; + this.lsb = 0; + this.flexing = false; + this.output = []; + this.stack = []; + } + + Type1CharString.prototype = { + convert: function Type1CharString_convert(encoded, subrs) { + var count = encoded.length; + var error = false; + var wx, sbx, subrNumber; + for (var i = 0; i < count; i++) { + var value = encoded[i]; + if (value < 32) { + if (value === 12) { + value = (value << 8) + encoded[++i]; + } + switch (value) { + case 1: // hstem + if (!HINTING_ENABLED) { + this.stack = []; + break; + } + error = this.executeCommand(2, COMMAND_MAP.hstem); + break; + case 3: // vstem + if (!HINTING_ENABLED) { + this.stack = []; + break; + } + error = this.executeCommand(2, COMMAND_MAP.vstem); + break; + case 4: // vmoveto + if (this.flexing) { + if (this.stack.length < 1) { + error = true; + break; + } + // Add the dx for flex and but also swap the values so they are + // the right order. + var dy = this.stack.pop(); + this.stack.push(0, dy); + break; + } + error = this.executeCommand(1, COMMAND_MAP.vmoveto); + break; + case 5: // rlineto + error = this.executeCommand(2, COMMAND_MAP.rlineto); + break; + case 6: // hlineto + error = this.executeCommand(1, COMMAND_MAP.hlineto); + break; + case 7: // vlineto + error = this.executeCommand(1, COMMAND_MAP.vlineto); + break; + case 8: // rrcurveto + error = this.executeCommand(6, COMMAND_MAP.rrcurveto); + break; + case 9: // closepath + // closepath is a Type1 command that does not take argument and is + // useless in Type2 and it can simply be ignored. + this.stack = []; + break; + case 10: // callsubr + if (this.stack.length < 1) { + error = true; + break; + } + subrNumber = this.stack.pop(); + error = this.convert(subrs[subrNumber], subrs); + break; + case 11: // return + return error; + case 13: // hsbw + if (this.stack.length < 2) { + error = true; + break; + } + // To convert to type2 we have to move the width value to the + // first part of the charstring and then use hmoveto with lsb. + wx = this.stack.pop(); + sbx = this.stack.pop(); + this.lsb = sbx; + this.width = wx; + this.stack.push(wx, sbx); + error = this.executeCommand(2, COMMAND_MAP.hmoveto); + break; + case 14: // endchar + this.output.push(COMMAND_MAP.endchar[0]); + break; + case 21: // rmoveto + if (this.flexing) { + break; + } + error = this.executeCommand(2, COMMAND_MAP.rmoveto); + break; + case 22: // hmoveto + if (this.flexing) { + // Add the dy for flex. + this.stack.push(0); + break; + } + error = this.executeCommand(1, COMMAND_MAP.hmoveto); + break; + case 30: // vhcurveto + error = this.executeCommand(4, COMMAND_MAP.vhcurveto); + break; + case 31: // hvcurveto + error = this.executeCommand(4, COMMAND_MAP.hvcurveto); + break; + case (12 << 8) + 0: // dotsection + // dotsection is a Type1 command to specify some hinting feature + // for dots that do not take a parameter and it can safely be + // ignored for Type2. + this.stack = []; + break; + case (12 << 8) + 1: // vstem3 + if (!HINTING_ENABLED) { + this.stack = []; + break; + } + // [vh]stem3 are Type1 only and Type2 supports [vh]stem with + // multiple parameters, so instead of returning [vh]stem3 take a + // shortcut and return [vhstem] instead. + error = this.executeCommand(2, COMMAND_MAP.vstem); + break; + case (12 << 8) + 2: // hstem3 + if (!HINTING_ENABLED) { + this.stack = []; + break; + } + // See vstem3. + error = this.executeCommand(2, COMMAND_MAP.hstem); + break; + case (12 << 8) + 6: // seac + // seac is like type 2's special endchar but it doesn't use the + // first argument asb, so remove it. + if (SEAC_ANALYSIS_ENABLED) { + this.seac = this.stack.splice(-4, 4); + error = this.executeCommand(0, COMMAND_MAP.endchar); + } else { + error = this.executeCommand(4, COMMAND_MAP.endchar); + } + break; + case (12 << 8) + 7: // sbw + if (this.stack.length < 4) { + error = true; + break; + } + // To convert to type2 we have to move the width value to the + // first part of the charstring and then use rmoveto with + // (dx, dy). The height argument will not be used for vmtx and + // vhea tables reconstruction -- ignoring it. + var wy = this.stack.pop(); + wx = this.stack.pop(); + var sby = this.stack.pop(); + sbx = this.stack.pop(); + this.lsb = sbx; + this.width = wx; + this.stack.push(wx, sbx, sby); + error = this.executeCommand(3, COMMAND_MAP.rmoveto); + break; + case (12 << 8) + 12: // div + if (this.stack.length < 2) { + error = true; + break; + } + var num2 = this.stack.pop(); + var num1 = this.stack.pop(); + this.stack.push(num1 / num2); + break; + case (12 << 8) + 16: // callothersubr + if (this.stack.length < 2) { + error = true; + break; + } + subrNumber = this.stack.pop(); + var numArgs = this.stack.pop(); + if (subrNumber === 0 && numArgs === 3) { + var flexArgs = this.stack.splice(this.stack.length - 17, 17); + this.stack.push( + flexArgs[2] + flexArgs[0], // bcp1x + rpx + flexArgs[3] + flexArgs[1], // bcp1y + rpy + flexArgs[4], // bcp2x + flexArgs[5], // bcp2y + flexArgs[6], // p2x + flexArgs[7], // p2y + flexArgs[8], // bcp3x + flexArgs[9], // bcp3y + flexArgs[10], // bcp4x + flexArgs[11], // bcp4y + flexArgs[12], // p3x + flexArgs[13], // p3y + flexArgs[14] // flexDepth + // 15 = finalx unused by flex + // 16 = finaly unused by flex + ); + error = this.executeCommand(13, COMMAND_MAP.flex, true); + this.flexing = false; + this.stack.push(flexArgs[15], flexArgs[16]); + } else if (subrNumber === 1 && numArgs === 0) { + this.flexing = true; + } + break; + case (12 << 8) + 17: // pop + // Ignore this since it is only used with othersubr. + break; + case (12 << 8) + 33: // setcurrentpoint + // Ignore for now. + this.stack = []; + break; + default: + warn('Unknown type 1 charstring command of "' + value + '"'); + break; + } + if (error) { + break; + } + continue; + } else if (value <= 246) { + value = value - 139; + } else if (value <= 250) { + value = ((value - 247) * 256) + encoded[++i] + 108; + } else if (value <= 254) { + value = -((value - 251) * 256) - encoded[++i] - 108; + } else { + value = (encoded[++i] & 0xff) << 24 | (encoded[++i] & 0xff) << 16 | + (encoded[++i] & 0xff) << 8 | (encoded[++i] & 0xff) << 0; + } + this.stack.push(value); + } + return error; + }, + + executeCommand: function(howManyArgs, command, keepStack) { + var stackLength = this.stack.length; + if (howManyArgs > stackLength) { + return true; + } + var start = stackLength - howManyArgs; + for (var i = start; i < stackLength; i++) { + var value = this.stack[i]; + if (value === (value | 0)) { // int + this.output.push(28, (value >> 8) & 0xff, value & 0xff); + } else { // fixed point + value = (65536 * value) | 0; + this.output.push(255, + (value >> 24) & 0xFF, + (value >> 16) & 0xFF, + (value >> 8) & 0xFF, + value & 0xFF); + } + } + this.output.push.apply(this.output, command); + if (keepStack) { + this.stack.splice(start, howManyArgs); + } else { + this.stack.length = 0; + } + return false; + } + }; + + return Type1CharString; +})(); + +/* + * Type1Parser encapsulate the needed code for parsing a Type1 font + * program. Some of its logic depends on the Type2 charstrings + * structure. + * Note: this doesn't really parse the font since that would require evaluation + * of PostScript, but it is possible in most cases to extract what we need + * without a full parse. + */ +var Type1Parser = (function Type1ParserClosure() { + /* + * Decrypt a Sequence of Ciphertext Bytes to Produce the Original Sequence + * of Plaintext Bytes. The function took a key as a parameter which can be + * for decrypting the eexec block of for decoding charStrings. + */ + var EEXEC_ENCRYPT_KEY = 55665; + var CHAR_STRS_ENCRYPT_KEY = 4330; + + function isHexDigit(code) { + return code >= 48 && code <= 57 || // '0'-'9' + code >= 65 && code <= 70 || // 'A'-'F' + code >= 97 && code <= 102; // 'a'-'f' + } + + function decrypt(data, key, discardNumber) { + var r = key | 0, c1 = 52845, c2 = 22719; + var count = data.length; + var decrypted = new Uint8Array(count); + for (var i = 0; i < count; i++) { + var value = data[i]; + decrypted[i] = value ^ (r >> 8); + r = ((value + r) * c1 + c2) & ((1 << 16) - 1); + } + return Array.prototype.slice.call(decrypted, discardNumber); + } + + function decryptAscii(data, key, discardNumber) { + var r = key | 0, c1 = 52845, c2 = 22719; + var count = data.length, maybeLength = count >>> 1; + var decrypted = new Uint8Array(maybeLength); + var i, j; + for (i = 0, j = 0; i < count; i++) { + var digit1 = data[i]; + if (!isHexDigit(digit1)) { + continue; + } + i++; + var digit2; + while (i < count && !isHexDigit(digit2 = data[i])) { + i++; + } + if (i < count) { + var value = parseInt(String.fromCharCode(digit1, digit2), 16); + decrypted[j++] = value ^ (r >> 8); + r = ((value + r) * c1 + c2) & ((1 << 16) - 1); + } + } + return Array.prototype.slice.call(decrypted, discardNumber, j); + } + + function isSpecial(c) { + return c === 0x2F || // '/' + c === 0x5B || c === 0x5D || // '[', ']' + c === 0x7B || c === 0x7D || // '{', '}' + c === 0x28 || c === 0x29; // '(', ')' + } + + function Type1Parser(stream, encrypted) { + if (encrypted) { + var data = stream.getBytes(); + var isBinary = !(isHexDigit(data[0]) && isHexDigit(data[1]) && + isHexDigit(data[2]) && isHexDigit(data[3])); + stream = new Stream(isBinary ? decrypt(data, EEXEC_ENCRYPT_KEY, 4) : + decryptAscii(data, EEXEC_ENCRYPT_KEY, 4)); + } + this.stream = stream; + this.nextChar(); + } + + Type1Parser.prototype = { + readNumberArray: function Type1Parser_readNumberArray() { + this.getToken(); // read '[' or '{' (arrays can start with either) + var array = []; + while (true) { + var token = this.getToken(); + if (token === null || token === ']' || token === '}') { + break; + } + array.push(parseFloat(token || 0)); + } + return array; + }, + + readNumber: function Type1Parser_readNumber() { + var token = this.getToken(); + return parseFloat(token || 0); + }, + + readInt: function Type1Parser_readInt() { + // Use '| 0' to prevent setting a double into length such as the double + // does not flow into the loop variable. + var token = this.getToken(); + return parseInt(token || 0, 10) | 0; + }, + + readBoolean: function Type1Parser_readBoolean() { + var token = this.getToken(); + + // Use 1 and 0 since that's what type2 charstrings use. + return token === 'true' ? 1 : 0; + }, + + nextChar : function Type1_nextChar() { + return (this.currentChar = this.stream.getByte()); + }, + + getToken: function Type1Parser_getToken() { + // Eat whitespace and comments. + var comment = false; + var ch = this.currentChar; + while (true) { + if (ch === -1) { + return null; + } + + if (comment) { + if (ch === 0x0A || ch === 0x0D) { + comment = false; + } + } else if (ch === 0x25) { // '%' + comment = true; + } else if (!Lexer.isSpace(ch)) { + break; + } + ch = this.nextChar(); + } + if (isSpecial(ch)) { + this.nextChar(); + return String.fromCharCode(ch); + } + var token = ''; + do { + token += String.fromCharCode(ch); + ch = this.nextChar(); + } while (ch >= 0 && !Lexer.isSpace(ch) && !isSpecial(ch)); + return token; + }, + + /* + * Returns an object containing a Subrs array and a CharStrings + * array extracted from and eexec encrypted block of data + */ + extractFontProgram: function Type1Parser_extractFontProgram() { + var stream = this.stream; + + var subrs = [], charstrings = []; + var program = { + subrs: [], + charstrings: [], + properties: { + 'privateData': { + 'lenIV': 4 + } + } + }; + var token, length, data, lenIV, encoded; + while ((token = this.getToken()) !== null) { + if (token !== '/') { + continue; + } + token = this.getToken(); + switch (token) { + case 'CharStrings': + // The number immediately following CharStrings must be greater or + // equal to the number of CharStrings. + this.getToken(); + this.getToken(); // read in 'dict' + this.getToken(); // read in 'dup' + this.getToken(); // read in 'begin' + while(true) { + token = this.getToken(); + if (token === null || token === 'end') { + break; + } + + if (token !== '/') { + continue; + } + var glyph = this.getToken(); + length = this.readInt(); + this.getToken(); // read in 'RD' or '-|' + data = stream.makeSubStream(stream.pos, length); + lenIV = program.properties.privateData['lenIV']; + encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, lenIV); + // Skip past the required space and binary data. + stream.skip(length); + this.nextChar(); + token = this.getToken(); // read in 'ND' or '|-' + if (token === 'noaccess') { + this.getToken(); // read in 'def' + } + charstrings.push({ + glyph: glyph, + encoded: encoded + }); + } + break; + case 'Subrs': + var num = this.readInt(); + this.getToken(); // read in 'array' + while ((token = this.getToken()) === 'dup') { + var index = this.readInt(); + length = this.readInt(); + this.getToken(); // read in 'RD' or '-|' + data = stream.makeSubStream(stream.pos, length); + lenIV = program.properties.privateData['lenIV']; + encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, lenIV); + // Skip past the required space and binary data. + stream.skip(length); + this.nextChar(); + token = this.getToken(); // read in 'NP' or '|' + if (token === 'noaccess') { + this.getToken(); // read in 'put' + } + subrs[index] = encoded; + } + break; + case 'BlueValues': + case 'OtherBlues': + case 'FamilyBlues': + case 'FamilyOtherBlues': + var blueArray = this.readNumberArray(); + // *Blue* values may contain invalid data: disables reading of + // those values when hinting is disabled. + if (blueArray.length > 0 && (blueArray.length % 2) === 0 && + HINTING_ENABLED) { + program.properties.privateData[token] = blueArray; + } + break; + case 'StemSnapH': + case 'StemSnapV': + program.properties.privateData[token] = this.readNumberArray(); + break; + case 'StdHW': + case 'StdVW': + program.properties.privateData[token] = + this.readNumberArray()[0]; + break; + case 'BlueShift': + case 'lenIV': + case 'BlueFuzz': + case 'BlueScale': + case 'LanguageGroup': + case 'ExpansionFactor': + program.properties.privateData[token] = this.readNumber(); + break; + case 'ForceBold': + program.properties.privateData[token] = this.readBoolean(); + break; + } + } + + for (var i = 0; i < charstrings.length; i++) { + glyph = charstrings[i].glyph; + encoded = charstrings[i].encoded; + var charString = new Type1CharString(); + var error = charString.convert(encoded, subrs); + var output = charString.output; + if (error) { + // It seems when FreeType encounters an error while evaluating a glyph + // that it completely ignores the glyph so we'll mimic that behaviour + // here and put an endchar to make the validator happy. + output = [14]; + } + program.charstrings.push({ + glyphName: glyph, + charstring: output, + width: charString.width, + lsb: charString.lsb, + seac: charString.seac + }); + } + + return program; + }, + + extractFontHeader: function Type1Parser_extractFontHeader(properties) { + var token; + while ((token = this.getToken()) !== null) { + if (token !== '/') { + continue; + } + token = this.getToken(); + switch (token) { + case 'FontMatrix': + var matrix = this.readNumberArray(); + properties.fontMatrix = matrix; + break; + case 'Encoding': + var encodingArg = this.getToken(); + var encoding; + if (!/^\d+$/.test(encodingArg)) { + // encoding name is specified + encoding = Encodings[encodingArg]; + } else { + encoding = []; + var size = parseInt(encodingArg, 10) | 0; + this.getToken(); // read in 'array' + + for (var j = 0; j < size; j++) { + token = this.getToken(); + // skipping till first dup or def (e.g. ignoring for statement) + while (token !== 'dup' && token !== 'def') { + token = this.getToken(); + if (token === null) { + return; // invalid header + } + } + if (token === 'def') { + break; // read all array data + } + var index = this.readInt(); + this.getToken(); // read in '/' + var glyph = this.getToken(); + encoding[index] = glyph; + this.getToken(); // read the in 'put' + } + } + properties.builtInEncoding = encoding; + break; + case 'FontBBox': + var fontBBox = this.readNumberArray(); + // adjusting ascent/descent + properties.ascent = fontBBox[3]; + properties.descent = fontBBox[1]; + properties.ascentScaled = true; + break; + } + } + } + }; + + return Type1Parser; +})(); + +/** + * The CFF class takes a Type1 file and wrap it into a + * 'Compact Font Format' which itself embed Type2 charstrings. + */ +var CFFStandardStrings = [ + '.notdef', 'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', 'percent', + 'ampersand', 'quoteright', 'parenleft', 'parenright', 'asterisk', 'plus', + 'comma', 'hyphen', 'period', 'slash', 'zero', 'one', 'two', 'three', 'four', + 'five', 'six', 'seven', 'eight', 'nine', 'colon', 'semicolon', 'less', + 'equal', 'greater', 'question', 'at', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', + 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', + 'X', 'Y', 'Z', 'bracketleft', 'backslash', 'bracketright', 'asciicircum', + 'underscore', 'quoteleft', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', + 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', + 'z', 'braceleft', 'bar', 'braceright', 'asciitilde', 'exclamdown', 'cent', + 'sterling', 'fraction', 'yen', 'florin', 'section', 'currency', + 'quotesingle', 'quotedblleft', 'guillemotleft', 'guilsinglleft', + 'guilsinglright', 'fi', 'fl', 'endash', 'dagger', 'daggerdbl', + 'periodcentered', 'paragraph', 'bullet', 'quotesinglbase', 'quotedblbase', + 'quotedblright', 'guillemotright', 'ellipsis', 'perthousand', 'questiondown', + 'grave', 'acute', 'circumflex', 'tilde', 'macron', 'breve', 'dotaccent', + 'dieresis', 'ring', 'cedilla', 'hungarumlaut', 'ogonek', 'caron', 'emdash', + 'AE', 'ordfeminine', 'Lslash', 'Oslash', 'OE', 'ordmasculine', 'ae', + 'dotlessi', 'lslash', 'oslash', 'oe', 'germandbls', 'onesuperior', + 'logicalnot', 'mu', 'trademark', 'Eth', 'onehalf', 'plusminus', 'Thorn', + 'onequarter', 'divide', 'brokenbar', 'degree', 'thorn', 'threequarters', + 'twosuperior', 'registered', 'minus', 'eth', 'multiply', 'threesuperior', + 'copyright', 'Aacute', 'Acircumflex', 'Adieresis', 'Agrave', 'Aring', + 'Atilde', 'Ccedilla', 'Eacute', 'Ecircumflex', 'Edieresis', 'Egrave', + 'Iacute', 'Icircumflex', 'Idieresis', 'Igrave', 'Ntilde', 'Oacute', + 'Ocircumflex', 'Odieresis', 'Ograve', 'Otilde', 'Scaron', 'Uacute', + 'Ucircumflex', 'Udieresis', 'Ugrave', 'Yacute', 'Ydieresis', 'Zcaron', + 'aacute', 'acircumflex', 'adieresis', 'agrave', 'aring', 'atilde', + 'ccedilla', 'eacute', 'ecircumflex', 'edieresis', 'egrave', 'iacute', + 'icircumflex', 'idieresis', 'igrave', 'ntilde', 'oacute', 'ocircumflex', + 'odieresis', 'ograve', 'otilde', 'scaron', 'uacute', 'ucircumflex', + 'udieresis', 'ugrave', 'yacute', 'ydieresis', 'zcaron', 'exclamsmall', + 'Hungarumlautsmall', 'dollaroldstyle', 'dollarsuperior', 'ampersandsmall', + 'Acutesmall', 'parenleftsuperior', 'parenrightsuperior', 'twodotenleader', + 'onedotenleader', 'zerooldstyle', 'oneoldstyle', 'twooldstyle', + 'threeoldstyle', 'fouroldstyle', 'fiveoldstyle', 'sixoldstyle', + 'sevenoldstyle', 'eightoldstyle', 'nineoldstyle', 'commasuperior', + 'threequartersemdash', 'periodsuperior', 'questionsmall', 'asuperior', + 'bsuperior', 'centsuperior', 'dsuperior', 'esuperior', 'isuperior', + 'lsuperior', 'msuperior', 'nsuperior', 'osuperior', 'rsuperior', 'ssuperior', + 'tsuperior', 'ff', 'ffi', 'ffl', 'parenleftinferior', 'parenrightinferior', + 'Circumflexsmall', 'hyphensuperior', 'Gravesmall', 'Asmall', 'Bsmall', + 'Csmall', 'Dsmall', 'Esmall', 'Fsmall', 'Gsmall', 'Hsmall', 'Ismall', + 'Jsmall', 'Ksmall', 'Lsmall', 'Msmall', 'Nsmall', 'Osmall', 'Psmall', + 'Qsmall', 'Rsmall', 'Ssmall', 'Tsmall', 'Usmall', 'Vsmall', 'Wsmall', + 'Xsmall', 'Ysmall', 'Zsmall', 'colonmonetary', 'onefitted', 'rupiah', + 'Tildesmall', 'exclamdownsmall', 'centoldstyle', 'Lslashsmall', + 'Scaronsmall', 'Zcaronsmall', 'Dieresissmall', 'Brevesmall', 'Caronsmall', + 'Dotaccentsmall', 'Macronsmall', 'figuredash', 'hypheninferior', + 'Ogoneksmall', 'Ringsmall', 'Cedillasmall', 'questiondownsmall', 'oneeighth', + 'threeeighths', 'fiveeighths', 'seveneighths', 'onethird', 'twothirds', + 'zerosuperior', 'foursuperior', 'fivesuperior', 'sixsuperior', + 'sevensuperior', 'eightsuperior', 'ninesuperior', 'zeroinferior', + 'oneinferior', 'twoinferior', 'threeinferior', 'fourinferior', + 'fiveinferior', 'sixinferior', 'seveninferior', 'eightinferior', + 'nineinferior', 'centinferior', 'dollarinferior', 'periodinferior', + 'commainferior', 'Agravesmall', 'Aacutesmall', 'Acircumflexsmall', + 'Atildesmall', 'Adieresissmall', 'Aringsmall', 'AEsmall', 'Ccedillasmall', + 'Egravesmall', 'Ea