8de6f1521045b2fbc086cb30d9fc901d7170ab5a — Jack Kelly a month ago 252320f
Import site code from unified repo
M .gitignore => .gitignore +8 -0
@@ 0,0 1,8 @@
+ .ghc.environment.*
+ \#*#
+ _cache/
+ _out/
+ content
+ dist-newstyle/
+ dist/
+ result

A LICENSE => LICENSE +674 -0
@@ 0,0 1,674 @@
+                     GNU GENERAL PUBLIC LICENSE
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+   16. Limitation of Liability.
+ 
+   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+ WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+ THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+ GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+ USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+ DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+ PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+ EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGES.
+ 
+   17. Interpretation of Sections 15 and 16.
+ 
+   If the disclaimer of warranty and limitation of liability provided
+ above cannot be given local legal effect according to their terms,
+ reviewing courts shall apply local law that most closely approximates
+ an absolute waiver of all civil liability in connection with the
+ Program, unless a warranty or assumption of liability accompanies a
+ copy of the Program in return for a fee.
+ 
+                      END OF TERMS AND CONDITIONS
+ 
+             How to Apply These Terms to Your New Programs
+ 
+   If you develop a new program, and you want it to be of the greatest
+ possible use to the public, the best way to achieve this is to make it
+ free software which everyone can redistribute and change under these terms.
+ 
+   To do so, attach the following notices to the program.  It is safest
+ to attach them to the start of each source file to most effectively
+ state the exclusion of warranty; and each file should have at least
+ the "copyright" line and a pointer to where the full notice is found.
+ 
+     <one line to give the program's name and a brief idea of what it does.>
+     Copyright (C) <year>  <name of author>
+ 
+     This program is free software: you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published by
+     the Free Software Foundation, either version 3 of the License, or
+     (at your option) any later version.
+ 
+     This program is distributed in the hope that it will be useful,
+     but WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+     GNU General Public License for more details.
+ 
+     You should have received a copy of the GNU General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ 
+ Also add information on how to contact you by electronic and paper mail.
+ 
+   If the program does terminal interaction, make it output a short
+ notice like this when it starts in an interactive mode:
+ 
+     <program>  Copyright (C) <year>  <name of author>
+     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+     This is free software, and you are welcome to redistribute it
+     under certain conditions; type `show c' for details.
+ 
+ The hypothetical commands `show w' and `show c' should show the appropriate
+ parts of the General Public License.  Of course, your program's commands
+ might be different; for a GUI interface, you would use an "about box".
+ 
+   You should also get your employer (if you work as a programmer) or school,
+ if any, to sign a "copyright disclaimer" for the program, if necessary.
+ For more information on this, and how to apply and follow the GNU GPL, see
+ <http://www.gnu.org/licenses/>.
+ 
+   The GNU General Public License does not permit incorporating your program
+ into proprietary programs.  If your program is a subroutine library, you
+ may consider it more useful to permit linking proprietary applications with
+ the library.  If this is what you want to do, use the GNU Lesser General
+ Public License instead of this License.  But first, please read
+ <http://www.gnu.org/philosophy/why-not-lgpl.html>.

A README.md => README.md +10 -0
@@ 0,0 1,10 @@
+ # Source code for [jackkelly.name](http://jackkelly.name)
+ 
+ [jackkelly.name](https://jackkelly.name) is a static site, generated
+ using [hakyll](https://jaspervdj.be/hakyll/). I found hakyll fairly
+ challenging to drive, so I'm sharing the source in the hope that it
+ benefits someone else.
+ 
+ The source code (`.hs` and `.nix` files) is licensed under GPL3+, but
+ I keep the site content in a separate private repo, which I symlink in
+ under `content`.

A bin/Main.hs => bin/Main.hs +34 -0
@@ 0,0 1,34 @@
+ import Blog (blog)
+ import Data.Default (def)
+ import GHC.IO.Encoding (setLocaleEncoding, utf8)
+ import Hakyll
+ import Navigation (navigationContext, navigation)
+ import Site (baseSiteContext, sectionLabel)
+ 
+ main :: IO ()
+ main = do
+   setLocaleEncoding utf8
+   let config = def
+         { destinationDirectory = "_out"
+         , providerDirectory = "content"
+         }
+ 
+   hakyllWith config $ do
+     create ["index.html"] $ do
+       let context = mconcat
+             [ constField "title" $ sectionLabel []
+             , navigationContext navigation
+             , baseSiteContext
+             ]
+       route idRoute
+       compile $ makeItem ""
+         >>= loadAndApplyTemplate "templates/default.html" context
+         >>= relativizeUrls
+ 
+     blog
+ 
+     match "css/*" $ do
+       route idRoute
+       compile copyFileCompiler
+ 
+     match "templates/**" $ compile templateCompiler

A default.nix => default.nix +13 -0
@@ 0,0 1,13 @@
+ { nixpkgs ? import <nixpkgs> {}, compiler ? "default", doBenchmark ? false }:
+ 
+ let
+ 
+   inherit (nixpkgs) pkgs;
+ 
+   haskellPackages = if compiler == "default"
+                        then pkgs.haskellPackages
+                        else pkgs.haskell.packages.${compiler};
+ 
+   variant = if doBenchmark then pkgs.haskell.lib.doBenchmark else pkgs.lib.id;
+ in
+   variant (haskellPackages.callPackage ./jackkelly-name.nix {})

A jackkelly-name.cabal => jackkelly-name.cabal +61 -0
@@ 0,0 1,61 @@
+ cabal-version:        2.2
+ name:                 jackkelly-name
+ version:              0.1.0.0
+ synopsis:             Hakyll project template from stack
+ description:          Please see README.md
+ homepage:             http://jackkelly.name
+ license:              GPL-3.0-or-later
+ license-file:         LICENSE
+ author:               Jack Kelly
+ maintainer:           jack@jackkelly.name
+ copyright:            2015 Jack Kelly
+ category:             Web
+ build-type:           Simple
+ 
+ executable site
+   hs-source-dirs:     bin
+   main-is:            Main.hs
+   default-language:   Haskell2010
+   default-extensions: OverloadedStrings
+   ghc-options:        -Wall -threaded
+   build-depends:      base
+                     , data-default
+                     , hakyll
+                     , jackkelly-name
+ 
+ library
+   hs-source-dirs:     src
+   default-language:   Haskell2010
+   default-extensions: OverloadedStrings
+   exposed-modules:    Blog
+                     , Blog.Archives
+                     , Blog.Images
+                     , Blog.Posts
+                     , Blog.Util
+                     , Navigation
+                     , Site
+   ghc-options:        -Wall
+   build-depends:      base >= 4.11.1 && < 4.13
+                     , aeson >= 1.3.1.1 && < 1.5
+                     , containers >= 0.5.11 && < 0.7
+                     , data-default >= 0.7.1.1 && < 0.8
+                     , filepath >= 1.4.2 && < 1.5
+                     , formatting >= 6.3.6 && < 6.4
+                     , hakyll >= 4.12.3 && < 4.13
+                     , lens >= 4.16.1 && < 4.18
+                     , monoidal-containers >= 0.3.1 && < 0.5
+                     , pandoc >= 2.2.1 && < 2.8
+                     , text >= 1.2.3 && < 1.3
+                     , time >= 1.8.0 && < 1.9
+                     , unordered-containers >= 0.2.9 && < 0.3
+ 
+ test-suite test
+   main-is:            Main.hs
+   type:               exitcode-stdio-1.0
+   hs-source-dirs:     test
+   default-language:   Haskell2010
+   ghc-options:        -Wall
+   other-modules:      Blog.PostsSpec
+   build-depends:      base >= 4.11.1 && < 4.13
+                     , hspec >= 2.5.5 && < 2.7
+                     , jackkelly-name

A jackkelly-name.nix => jackkelly-name.nix +20 -0
@@ 0,0 1,20 @@
+ { mkDerivation, aeson, base, containers, data-default, filepath
+ , formatting, hakyll, hspec, lens, monoidal-containers, pandoc
+ , stdenv, text, time, unordered-containers
+ }:
+ mkDerivation {
+   pname = "jackkelly-name";
+   version = "0.1.0.0";
+   src = ./.;
+   isLibrary = true;
+   isExecutable = true;
+   libraryHaskellDepends = [
+     aeson base containers data-default filepath formatting hakyll lens
+     monoidal-containers pandoc text time unordered-containers
+   ];
+   executableHaskellDepends = [ base data-default hakyll ];
+   testHaskellDepends = [ base hspec ];
+   homepage = "http://jackkelly.name";
+   description = "Hakyll project template from stack";
+   license = stdenv.lib.licenses.gpl3;
+ }

A shell.nix => shell.nix +13 -0
@@ 0,0 1,13 @@
+ { nixpkgs ? import <nixos-19.03> {}
+ , compiler ? "default"
+ }:
+ 
+ let
+   inherit (nixpkgs) pkgs;
+   env = (import ./default.nix { inherit nixpkgs compiler; }).env;
+ in
+   env.overrideAttrs (oldAttrs: {
+     buildInputs = with pkgs.haskellPackages; oldAttrs.buildInputs ++ [
+       cabal-install ghcid
+     ];
+   })

A src/Blog.hs => src/Blog.hs +81 -0
@@ 0,0 1,81 @@
+ module Blog (blog) where
+ 
+ import Blog.Archives (blogArchives)
+ import Blog.Images (blogImages)
+ import Blog.Posts (blogPostContext, blogPosts, blogPostsPattern)
+ import Blog.Util (baseBlogContext)
+ import Hakyll
+ import Site (sectionLabel)
+ 
+ blog :: Rules ()
+ blog = do
+   tags <- buildTags blogPostsPattern (fromCapture "blog/archives/*/index.html")
+   blogTags tags
+   blogPosts tags
+   blogArchives tags
+   blogImages
+   blogFront tags
+   blogFeeds
+ 
+ blogTags :: Tags -> Rules ()
+ blogTags tags = tagsRules tags $ \tag pat -> do
+   route idRoute
+   compile $ do
+     postContext <- blogPostContext tags
+ 
+     let
+       title = sectionLabel [ "Blog", "Archives for tag: " ++ tag ]
+       posts = recentFirst =<< loadAll pat
+ 
+       context = mconcat
+         [ constField "title" title
+         , listField "posts" postContext posts
+         , baseBlogContext
+         ]
+ 
+     makeItem ""
+       >>= loadAndApplyTemplate "templates/blog/tag_archive.html" context
+       >>= loadAndApplyTemplate "templates/default.html" context
+       >>= relativizeUrls
+ 
+ blogFront :: Tags -> Rules ()
+ blogFront tags = create ["blog/index.html"] $ do
+   route idRoute
+   compile $ do
+     postContext <- blogPostContext tags
+ 
+     let context = mconcat
+           [ listField "posts" postContext (loadRecentPosts 5)
+           , constField "title" (sectionLabel ["Blog"])
+           , baseBlogContext
+           ]
+ 
+     makeItem ""
+       >>= loadAndApplyTemplate "templates/blog/index.html" context
+       >>= loadAndApplyTemplate "templates/default.html" context
+       >>= relativizeUrls
+ 
+ blogFeeds :: Rules ()
+ blogFeeds = do
+   create ["blog/atom.xml"] $ do
+     route idRoute
+     compile $ loadRecentPosts 10 >>= renderAtom config feedContext
+ 
+   create ["blog/rss.xml"] $ do
+     route idRoute
+     compile $ loadRecentPosts 10 >>= renderRss config feedContext
+ 
+   where
+     config = FeedConfiguration
+       { feedTitle = sectionLabel ["Blog"]
+       , feedDescription = "Latest posts on jackkelly.name"
+       , feedAuthorName = "Jack Kelly"
+       , feedAuthorEmail = "jack at jackkelly dot name"
+       , feedRoot = "https://jackkelly.name/blog"
+       }
+ 
+     feedContext = bodyField "description" <> defaultContext
+ 
+ loadRecentPosts :: Int -> Compiler [Item String]
+ loadRecentPosts n = fmap (take n) . recentFirst
+   =<< loadAllSnapshots blogPostsPattern "content"

A src/Blog/Archives.hs => src/Blog/Archives.hs +180 -0
@@ 0,0 1,180 @@
+ {-# LANGUAGE TupleSections #-}
+ 
+ module Blog.Archives (blogArchives) where
+ 
+ import           Blog.Posts (blogPostContext, blogPostsPattern)
+ import           Blog.Util (baseBlogContext, parseBlogDate)
+ import           Control.Lens (_1, _2, _3, view)
+ import           Data.Aeson (Value(..))
+ import           Data.Foldable (for_)
+ import           Data.Functor ((<&>))
+ import           Data.HashMap.Lazy ((!))
+ import           Data.List (sortBy)
+ import qualified Data.Map as M
+ import           Data.Map.Monoidal (MonoidalMap)
+ import qualified Data.Map.Monoidal as MM
+ import           Data.Ord (comparing)
+ import qualified Data.Text as T
+ import           Data.Time (defaultTimeLocale, months, toGregorian)
+ import           Formatting ((%), (%.), formatToString, int, left)
+ import           Hakyll
+ import           Site (Url(..), sectionLabel)
+ 
+ type Post = (Identifier, Metadata)
+ type PostsByDay
+   = MonoidalMap Integer
+      (MonoidalMap Int
+       (MonoidalMap Int [Post]))
+ 
+ blogArchives :: Tags -> Rules ()
+ blogArchives tags = do
+   postsByDay <- splitByDay <$> getAllMetadata blogPostsPattern
+   archiveIndex postsByDay tags
+   yearArchives postsByDay tags
+   monthArchives postsByDay tags
+ 
+ splitByDay :: [(Identifier, Metadata)] -> PostsByDay
+ splitByDay = foldMap postToMap . sortBy (comparing postDate)
+   where
+     postDate (_, meta) =
+       let String date = meta ! "date"
+       in parseBlogDate $ T.unpack date
+ 
+     postToMap post =
+       let (year, month, day) = toGregorian $ postDate post
+       in MM.singleton year . MM.singleton month $ MM.singleton day [post]
+ 
+ archiveIndex :: PostsByDay -> Tags -> Rules ()
+ archiveIndex postsByDay tags = create ["blog/archives/index.html"] $ do
+   route idRoute
+   compile $ do
+     let
+       tagItems :: Compiler [Item (String, Url, Int)]
+       tagItems = sequenceA $ tagsMap tags <&> \(tag, idents) ->
+         makeItem (tag, Url $ "/blog/archives/" <> tag, length idents)
+ 
+       tagContext :: Context (String, Url, Int)
+       tagContext = mconcat
+         [ field "tag" $ pure . view _1 . itemBody
+         , field "url" $ pure . unUrl . view _2 . itemBody
+         , field "count" $ pure . show . view _3 . itemBody
+         ]
+ 
+       monthContext :: Context (String, Url, Int)
+       monthContext = mconcat
+         [ field "month" $ pure . view _1 . itemBody
+         , field "url" $ pure . ('/':) .unUrl . view _2 . itemBody
+         , field "count" $ pure . show . view _3 . itemBody
+         ]
+ 
+       monthItems :: Integer -> Compiler [Item (String, Url, Int)]
+       monthItems year = sequenceA
+         [ makeItem (monthName m, Url $ monthArchiveUrl y m, length posts)
+         | (y, m, posts) <- reverse postsByMonth
+         , y == year
+         ]
+ 
+       postsByMonth = foldMap collectMonthYear $ toAscList postsByDay
+ 
+       yearContext :: Context (Integer, Url)
+       yearContext = mconcat
+         [ field "year" $ pure . show . view _1 . itemBody
+         , field "url" $ pure . ('/':) . unUrl . view _2 . itemBody
+         , listFieldWith "months" monthContext $ monthItems . view _1 . itemBody
+         ]
+ 
+       yearItems :: Compiler [Item (Integer, Url)]
+       yearItems = sequenceA $ reverse (MM.keys postsByDay) <&> \year ->
+         makeItem (year, Url $ yearArchiveUrl year)
+ 
+       context = mconcat
+         [ listField "tags" tagContext tagItems
+         , listField "years" yearContext yearItems
+         , constField "title" $ sectionLabel ["Blog", "All Posts"]
+         , baseBlogContext
+         ]
+ 
+     makeItem ""
+       >>= loadAndApplyTemplate "templates/blog/archives.html" context
+       >>= loadAndApplyTemplate "templates/default.html" context
+       >>= relativizeUrls
+ 
+ yearArchives :: PostsByDay -> Tags -> Rules ()
+ yearArchives postsByDay tags =
+   for_ (toAscList postsByYear) $ \(year, posts) ->
+     create [fromFilePath $ yearArchiveUrl year] $ do
+       route idRoute
+       compile $ do
+         sortedPosts <- traverse load (fst <$> posts)
+           >>= recentFirst
+         postContext <- blogPostContext tags
+ 
+         let context = mconcat
+               [ constField "title" $
+                   sectionLabel ["Blog", "Archives for " ++ show year]
+               , listField "posts" postContext (pure sortedPosts)
+               , baseBlogContext
+               ]
+ 
+         makeItem ""
+           >>= loadAndApplyTemplate "templates/blog/year_archive.html" context
+           >>= loadAndApplyTemplate "templates/default.html" context
+           >>= relativizeUrls
+ 
+   where
+     postsByYear = collectYear <$> postsByDay
+ 
+     collectYear :: MonoidalMap Int (MonoidalMap Int [Post]) -> [Post]
+     collectYear = concatMap (concat . MM.elems) . MM.elems
+ 
+ monthArchives :: PostsByDay -> Tags -> Rules ()
+ monthArchives postsByDay tags = do
+   for_ postsByMonth $ \(year, month, posts) ->
+     let monthId = fromFilePath $ monthArchiveUrl year month
+     in create [monthId] $ do
+       route idRoute
+       compile $ do
+         sortedPosts <- traverse (`loadSnapshot` "content") (fst <$> posts)
+           >>= recentFirst
+         postContext <- blogPostContext tags
+ 
+         let
+           monthLabel = monthName month ++ " " ++ show year
+           title = sectionLabel ["Blog", "Archives for " ++ monthLabel]
+           context = mconcat
+             [ listField "posts" postContext (pure sortedPosts)
+             , constField "title" title
+             , baseBlogContext
+             ]
+ 
+         makeItem ""
+           >>= loadAndApplyTemplate "templates/blog/month_archive.html" context
+           >>= loadAndApplyTemplate "templates/default.html" context
+           >>= relativizeUrls
+ 
+   where
+     postsByMonth = foldMap collectMonthYear $ toAscList postsByDay
+ 
+ monthName :: Int -> String
+ monthName month = fst $ months defaultTimeLocale !! (month - 1)
+ 
+ monthArchiveUrl :: Integer -> Int -> String
+ monthArchiveUrl = formatToString pat where
+   pat = "blog/archives/" % int % "/" % (left 2 '0' %. int) % "/index.html"
+ 
+ yearArchiveUrl :: Integer -> String
+ yearArchiveUrl year = "blog/archives/" ++ show year ++ "/index.html"
+ 
+ collectMonthYear
+   :: (Integer, MonoidalMap Int (MonoidalMap Int [Post]))
+   -> [(Integer, Int, [Post])]
+ collectMonthYear (year, postsForYear) =
+   let collectMonth :: (Int, MonoidalMap Int [Post]) -> (Integer, Int, [Post])
+       collectMonth (month, postsForMonth) =
+         (year, month, mconcat $ MM.elems postsForMonth)
+   in collectMonth <$> toAscList postsForYear
+ 
+ -- Not present in monoidal-containers-0.3.1.0, which is what
+ -- nixos-18.09 provides.
+ toAscList :: MonoidalMap k a -> [(k, a)]
+ toAscList = M.toAscList . MM.getMonoidalMap

A src/Blog/Images.hs => src/Blog/Images.hs +11 -0
@@ 0,0 1,11 @@
+ module Blog.Images (blogImages) where
+ 
+ import Hakyll
+ 
+ blogImages :: Rules ()
+ blogImages = match blogImagesPattern $ do
+   route idRoute
+   compile copyFileCompiler
+ 
+ blogImagesPattern :: Pattern
+ blogImagesPattern = "blog/images/**/*"

A src/Blog/Posts.hs => src/Blog/Posts.hs +89 -0
@@ 0,0 1,89 @@
+ module Blog.Posts (blogPosts, blogPostsPattern, blogPostContext, slug) where
+ 
+ import           Blog.Util (baseBlogContext, parseBlogDate)
+ import           Control.Applicative (empty)
+ import           Data.Aeson (Value(..))
+ import           Data.Char (toLower)
+ import           Data.Default (def)
+ import           Data.HashMap.Lazy ((!))
+ import           Data.List (sort)
+ import qualified Data.Map as Map
+ import qualified Data.Text as T
+ import           Data.Time (defaultTimeLocale, formatTime)
+ import           Hakyll
+ import           Site (sectionLabel)
+ import           System.FilePath ((</>))
+ import qualified Text.Pandoc as P
+ 
+ blogPostsPattern :: Pattern
+ blogPostsPattern = "blog/*.markdown"
+ 
+ blogPosts :: Tags -> Rules ()
+ blogPosts tags =
+   match blogPostsPattern $ do
+     route blogPostRoute
+     compile $ do
+       postContext <- blogPostContext tags
+ 
+       let
+         pageContext = labeledTitle <> postContext
+         labeledTitle = field "title" $ \item ->
+           getMetadataField (itemIdentifier item) "title"
+           >>= maybe empty (pure . sectionLabel . ("Blog":) . pure)
+ 
+       blogPostCompiler
+         >>= saveSnapshot "content"
+         >>= loadAndApplyTemplate "templates/blog/post.html" postContext
+         >>= loadAndApplyTemplate "templates/default.html" pageContext
+         >>= relativizeUrls
+ 
+ blogPostRoute :: Routes
+ blogPostRoute = metadataRoute routeFromMeta where
+   routeFromMeta meta = constRoute path where
+     path = "blog"
+       </> "archives"
+       </> dateP
+       </> (slug . T.unpack) title
+       </> "index.html"
+     String title = meta ! "title"
+     dateP = formatTime defaultTimeLocale "%Y/%m/%d" date
+     date = parseBlogDate . T.unpack $ dateS
+     String dateS = meta ! "date"
+ 
+ blogPostCompiler :: Compiler (Item String)
+ blogPostCompiler = pandocCompilerWith readerOptions writerOptions where
+   readerOptions = def
+     { P.readerExtensions =
+         P.disableExtension P.Ext_implicit_figures P.pandocExtensions
+     }
+   writerOptions = def
+ 
+ blogPostContext :: Tags -> Compiler (Context String)
+ blogPostContext tags = do
+   posts <- sort <$> getMatches blogPostsPattern
+ 
+   let
+     -- Build tables of previous/next posts in history
+     prevs = Map.fromList $ zip (tail posts) posts
+     nexts = Map.fromList . zip posts . tail $ posts
+ 
+     lookupUrl dict ident = case Map.lookup ident dict of
+       Nothing -> empty
+       Just ident' -> maybe empty toUrl <$> getRoute ident'
+ 
+   pure $ mconcat
+     [ tagsField "tags" tags
+     , dateField "date" "%B %e, %Y"
+     , field "prev" $ lookupUrl prevs . itemIdentifier
+     , field "next" $ lookupUrl nexts . itemIdentifier
+     , teaserField "teaser" "content"
+     , baseBlogContext
+     ]
+ 
+ slug :: String -> String
+ slug = filter (not . (`elem` ("',!?()+:" :: String)))
+   . replace "&. " '_'
+   . map toLower
+   where
+     replace :: String -> Char -> String -> String
+     replace from to xs = [ if x `elem` from then to else x | x <- xs ]

A src/Blog/Util.hs => src/Blog/Util.hs +14 -0
@@ 0,0 1,14 @@
+ module Blog.Util (baseBlogContext, parseBlogDate) where
+ 
+ import Data.Time (Day, defaultTimeLocale, iso8601DateFormat, parseTimeOrError)
+ import Hakyll
+ import Navigation (navigation, navigationContext, select)
+ import Site (baseSiteContext)
+ 
+ baseBlogContext :: Context String
+ baseBlogContext =
+   navigationContext (select "Blog" navigation) <> baseSiteContext
+ 
+ parseBlogDate :: String -> Day
+ parseBlogDate = parseTimeOrError False defaultTimeLocale format where
+   format = iso8601DateFormat $ Just "%H:%M:%S"

A src/Navigation.hs => src/Navigation.hs +65 -0
@@ 0,0 1,65 @@
+ {-# LANGUAGE ViewPatterns #-}
+ 
+ module Navigation
+   (Navigation, navigation, navigationContext, select, deselect) where
+ 
+ import Data.Maybe (isNothing, maybeToList)
+ import Hakyll
+ import Site (Url(..))
+ 
+ data Navigation = Navigation
+   { before :: [NavItem]
+   , selected :: Maybe NavItem
+   , after :: [NavItem]
+   } deriving Show
+ 
+ type NavItem = (String, Url)
+ 
+ navigation :: Navigation
+ navigation = Navigation [] Nothing
+   [ ("Blog", Url "/blog")
+   ]
+ 
+ navigationContext :: Navigation -> Context a
+ navigationContext navs = field "navigation" $ renderedNav where
+   renderedNav = fmap itemBody
+     . loadAndApplyTemplate "templates/navigation.html"
+         (navigationItemContext navs)
+ 
+ navigationItemContext :: Navigation -> Context a
+ navigationItemContext navs
+   = boolField "frontpage" (const . isNothing $ selected navs)
+   <> listField "navItem" context items
+ 
+   where
+     items = do
+       befores <- traverse makeItem $ before navs
+       chosen <- fmap maybeToList . traverse makeItem $ selected navs
+       afters <- traverse makeItem $ after navs
+ 
+       pure $ befores <> chosen <> afters
+ 
+     context :: Context NavItem
+     context = mconcat
+       [ boolField "selected" $ isSelected
+       , field "label" $ pure . fst . itemBody
+       , field "url" $ pure . unUrl . snd . itemBody
+       ]
+ 
+     isSelected :: Item NavItem -> Bool
+     isSelected (itemBody -> (label, _)) = case selected navs of
+       Nothing -> False
+       Just (label', _) -> label == label'
+ 
+ select :: String -> Navigation -> Navigation
+ select key nav = Navigation befores chosen afters where
+   befores = takeWhile ((key /=) . fst) $ navItems
+   (chosen, afters) = case dropWhile ((key /=) . fst) $ navItems of
+     [] -> (Nothing, [])
+     (n:ns) -> (Just n, ns)
+ 
+   navItems = after $ deselect nav
+ 
+ deselect :: Navigation -> Navigation
+ deselect nav = Navigation [] Nothing $
+   before nav <> maybeToList (selected nav) <> after nav

A src/Site.hs => src/Site.hs +18 -0
@@ 0,0 1,18 @@
+ module Site (Url(..), baseSiteContext, sectionLabel) where
+ 
+ import Control.Lens (_1, view)
+ import Data.List (intercalate)
+ import Data.Time.Calendar (toGregorian)
+ import Data.Time.Clock (getCurrentTime)
+ import Data.Time.LocalTime (getCurrentTimeZone, localDay, utcToLocalTime)
+ import Hakyll
+ 
+ newtype Url = Url { unUrl :: String } deriving Show
+ 
+ baseSiteContext :: Context String
+ baseSiteContext = field "current_year" currentYear <> defaultContext where
+   currentYear = const . unsafeCompiler $ show . view _1 . toGregorian . localDay
+     <$> (utcToLocalTime <$> getCurrentTimeZone <*> getCurrentTime)
+ 
+ sectionLabel :: [String] -> String
+ sectionLabel = intercalate " | " . reverse . ("jackkelly.name":)

A test/Blog/PostsSpec.hs => test/Blog/PostsSpec.hs +335 -0
@@ 0,0 1,335 @@
+ module Blog.PostsSpec where
+ 
+ import Blog.Posts (slug)
+ import Data.Foldable (for_)
+ import Test.Hspec
+ 
+ spec :: Spec
+ spec = do
+   describe "slug" $ do
+     let cases = [("Pre-departure Test Post",
+                   "pre-departure_test_post"),
+ 
+                  ("A Collection of College Words and Customs",
+                   "a_collection_of_college_words_and_customs"),
+ 
+                  ("Come-by-Chance",
+                   "come-by-chance"),
+ 
+                  ("My new home",
+                   "my_new_home"),
+ 
+                  ("Blackwall Hitch",
+                   "blackwall_hitch"),
+ 
+                  ("First Voyage",
+                   "first_voyage"),
+ 
+                  ("High Adventure: A Narrative of Air Fighting in France",
+                   "high_adventure_a_narrative_of_air_fighting_in_france"),
+ 
+                  ("The Man who was Thursday",
+                   "the_man_who_was_thursday"),
+ 
+                  ("Disintegrated Dunlops",
+                   "disintegrated_dunlops"),
+ 
+                  ("Dracula",
+                   "dracula"),
+ 
+                  ("Going for a Walk",
+                   "going_for_a_walk"),
+ 
+                  ("New Skill: Whipping",
+                   "new_skill_whipping"),
+ 
+                  ("The Awful German Language",
+                   "the_awful_german_language"),
+ 
+                  ("Why ZZT was so Great",
+                   "why_zzt_was_so_great"),
+ 
+                  ("Visitors!",
+                   "visitors"),
+ 
+                  ("Z+ UI Mockups",
+                   "z_ui_mockups"),
+ 
+                  ("Prepping for Sea",
+                   "prepping_for_sea"),
+ 
+                  ("Seafarers' Festival",
+                   "seafarers_festival"),
+ 
+                  ("Back from Voyage",
+                   "back_from_voyage"),
+ 
+                  ("Z+ - File Format Considerations",
+                   "z_-_file_format_considerations"),
+ 
+                  ("Z+ UI - A Decision",
+                   "z_ui_-_a_decision"),
+ 
+                  ("Rope Mat",
+                   "rope_mat"),
+ 
+                  ("Z+ - Board Model",
+                   "z_-_board_model"),
+ 
+                  ("A Sherlock Holmes Omnibus",
+                   "a_sherlock_holmes_omnibus"),
+ 
+                  ("The Strange Case of Dr. Jekyll and Mr. Hyde",
+                   "the_strange_case_of_dr__jekyll_and_mr__hyde"),
+ 
+                  ("Port Davey (Nov 2011)",
+                   "port_davey_nov_2011"),
+ 
+                  ("Underwater Repairs",
+                   "underwater_repairs"),
+ 
+                  ("A quick between-voyage post",
+                   "a_quick_between-voyage_post"),
+ 
+                  ("On the Duties of the Clergy",
+                   "on_the_duties_of_the_clergy"),
+ 
+                  ("Finished Voyaging... For Now",
+                   "finished_voyaging____for_now"),
+ 
+                  ("1606: An Epic Adventure",
+                   "1606_an_epic_adventure"),
+ 
+                  ("How not to Moor",
+                   "how_not_to_moor"),
+ 
+                  ("The Jungle Book and The Second Jungle Book",
+                   "the_jungle_book_and_the_second_jungle_book"),
+ 
+                  ("The Time Machine",
+                   "the_time_machine"),
+ 
+                  ("textstream",
+                   "textstream"),
+ 
+                  ("Inside Steve's Brain",
+                   "inside_steves_brain"),
+ 
+                  ("Sydney to Hobart",
+                   "sydney_to_hobart"),
+ 
+                  ("The Bedside Book Of Geometry",
+                   "the_bedside_book_of_geometry"),
+ 
+                  ("Wild Dayz",
+                   "wild_dayz"),
+ 
+                  ("Another Crewmate, Another Blogger",
+                   "another_crewmate_another_blogger"),
+ 
+                  ("On DRM and Charts",
+                   "on_drm_and_charts"),
+ 
+                  ("Darwin's Armada",
+                   "darwins_armada"),
+ 
+                  ("Evolution of a nickname",
+                   "evolution_of_a_nickname"),
+ 
+                  ("Repairing the Radar",
+                   "repairing_the_radar"),
+ 
+                  ("Roger Waters - The Wall (Live)",
+                   "roger_waters_-_the_wall_live"),
+ 
+                  ("Walden",
+                   "walden"),
+ 
+                  ("Deakin University Feb 2012",
+                   "deakin_university_feb_2012"),
+ 
+                  ("Jennifer Government",
+                   "jennifer_government"),
+ 
+                  ("Zen: The Wisdom of the East: A New Way of Life",
+                   "zen_the_wisdom_of_the_east_a_new_way_of_life"),
+ 
+                  ("Automating the Bunkplan",
+                   "automating_the_bunkplan"),
+ 
+                  ("Dead Men's Silver",
+                   "dead_mens_silver"),
+ 
+                  ("On Automation and API Documentation",
+                   "on_automation_and_api_documentation"),
+ 
+                  ("Port Davey, March 2012",
+                   "port_davey_march_2012"),
+ 
+                  ("Quiros",
+                   "quiros"),
+ 
+                  ("Another Voyage in March",
+                   "another_voyage_in_march"),
+ 
+                  ("Lateral Thinking: A Textbook of Creativity",
+                   "lateral_thinking_a_textbook_of_creativity"),
+ 
+                  ("Another Port Davey Voyage",
+                   "another_port_davey_voyage"),
+ 
+                  ("Programming in Prolog",
+                   "programming_in_prolog"),
+ 
+                  ("The Art of Assembly Language",
+                   "the_art_of_assembly_language"),
+ 
+                  ("Captain Hornblower R.N.",
+                   "captain_hornblower_r_n_"),
+ 
+                  ("American Gods",
+                   "american_gods"),
+ 
+                  ("Rotary Migrant Voyage",
+                   "rotary_migrant_voyage"),
+ 
+                  ("Another Voyage",
+                   "another_voyage"),
+ 
+                  ("Sophie's World",
+                   "sophies_world"),
+ 
+                  ("Ten Days in a Madhouse",
+                   "ten_days_in_a_madhouse"),
+ 
+                  ("Automating the Bunkplan (in Haskell)",
+                   "automating_the_bunkplan_in_haskell"),
+ 
+                  ("Ropework and Fridge",
+                   "ropework_and_fridge"),
+ 
+                  ("The Marlinspike Sailor",
+                   "the_marlinspike_sailor"),
+ 
+                  ("Final Voyage?",
+                   "final_voyage"),
+ 
+                  ("The Invisible Man",
+                   "the_invisible_man"),
+ 
+                  ("Metscrape's Revenge",
+                   "metscrapes_revenge"),
+ 
+                  ("Musings on D&D 4th Edition",
+                   "musings_on_d_d_4th_edition"),
+ 
+                  ("Playing with Wire",
+                   "playing_with_wire"),
+ 
+                  ("Roll Through The Ages",
+                   "roll_through_the_ages"),
+ 
+                  ("Mandela: A Biography",
+                   "mandela_a_biography"),
+ 
+                  ("Alex's Adventures in Numberland",
+                   "alexs_adventures_in_numberland"),
+ 
+                  ("The Curse of the Traveller",
+                   "the_curse_of_the_traveller"),
+ 
+                  ("Scarecrow and the Army of Theives",
+                   "scarecrow_and_the_army_of_theives"),
+ 
+                  ("The Legend of Sleepy Hollow",
+                   "the_legend_of_sleepy_hollow"),
+ 
+                  ("Brave New World",
+                   "brave_new_world"),
+ 
+                  ("Deakin Voyage (October 2012)",
+                   "deakin_voyage_october_2012"),
+ 
+                  ("The Man Who Loved Only Numbers",
+                   "the_man_who_loved_only_numbers"),
+ 
+                  ("Port Davey, November 2012",
+                   "port_davey_november_2012"),
+ 
+                  ("The Philosophical Life",
+                   "the_philosophical_life"),
+ 
+                  ("Final Voyage of 2012",
+                   "final_voyage_of_2012"),
+ 
+                  ("Living Education",
+                   "living_education"),
+ 
+                  ("Starship Troopers",
+                   "starship_troopers"),
+ 
+                  ("Merry Christmas",
+                   "merry_christmas"),
+ 
+                  ("Gnus and GMail",
+                   "gnus_and_gmail"),
+ 
+                  ("King of the Derwent",
+                   "king_of_the_derwent"),
+ 
+                  ("Imprisoned by the Haskell Toolchain",
+                   "imprisoned_by_the_haskell_toolchain"),
+ 
+                  ("Deadlands",
+                   "deadlands"),
+ 
+                  ("The Haskell Toolchain: Clarifications",
+                   "the_haskell_toolchain_clarifications"),
+ 
+                  ("Australian Wooden Boat Festival, 2013",
+                   "australian_wooden_boat_festival_2013"),
+ 
+                  ("Reading RSS with gnus",
+                   "reading_rss_with_gnus"),
+ 
+                  ("Gnus: Combining RSS feeds into a single webcomic group",
+                   "gnus_combining_rss_feeds_into_a_single_webcomic_group"),
+ 
+                  ("AMC",
+                   "amc"),
+ 
+                  ("Why build the mechanism if every policy sucks?",
+                   "why_build_the_mechanism_if_every_policy_sucks"),
+ 
+                  ("Traditional Sailorly Arts",
+                   "traditional_sailorly_arts"),
+ 
+                  ("Religion for Atheists",
+                   "religion_for_atheists"),
+ 
+                  ("Use an OpenPandora as a Boot Device",
+                   "use_an_openpandora_as_a_boot_device"),
+ 
+                  ("Stephen Brown",
+                   "stephen_brown"),
+ 
+                  ("The Dark Tower Series",
+                   "the_dark_tower_series"),
+ 
+                  ("Pot-net",
+                   "pot-net"),
+ 
+                  ("The Slipway",
+                   "the_slipway"),
+ 
+                  ("Trivia Quiz",
+                   "trivia_quiz"),
+ 
+                  ("Hobart to Melbourne to Hobart",
+                   "hobart_to_melbourne_to_hobart"),
+ 
+                  ("Fun with Flags",
+                   "fun_with_flags")]
+     for_ cases $ \(input, expected) -> do
+       specify ("slug " ++ (show input) ++ " == " ++ (show expected)) $
+         slug input `shouldBe` expected

A test/Main.hs => test/Main.hs +1 -0
@@ 0,0 1,1 @@
+ {-# OPTIONS_GHC -F -pgmF hspec-discover #-}