From ed4e35da340817fa5769040737545ec80f6d37ba Mon Sep 17 00:00:00 2001
From: "Hristos N. Triantafillou" <me@hristos.triantafillou.us>
Date: Fri, 15 Nov 2019 21:27:29 -0600
Subject: [PATCH] Create and use the source link plugin

---
 plugins/source-link.lua | 37 +++++++++++++++++++++++++++++++++++++
 site/css/site.css       |  6 ++++++
 soupault.conf           |  9 +++++++++
 templates/main.html     |  1 +
 4 files changed, 53 insertions(+)
 create mode 100644 plugins/source-link.lua

diff --git a/plugins/source-link.lua b/plugins/source-link.lua
new file mode 100644
index 0000000..d6306e1
--- /dev/null
+++ b/plugins/source-link.lua
@@ -0,0 +1,37 @@
+-- Creates a "source link" from a given repo base and injects the link into the page.
+--
+-- Minimal soupault version: 1.3
+-- Author: Hristos N. Triantafillou
+-- License: MIT
+
+link_text = config["link_text"]
+selector = config["selector"]
+repo_base = config["repo_base"]
+
+if (not link_text) then
+  Log.warning("Missing required option \"link_text\", using default (\"This page's source code\")")
+  link_text = "This page's source code"
+end
+
+if (not selector) then
+  Log.warning("Missing required option \"selector\", using default (\"div#source-link\")")
+  selector = "div#source-link"
+end
+
+if (not repo_base) then
+  Log.warning("Missing required option \"repo_base\", using default (\"CHANGEME\")")
+  repo_base = "https://git.sr.ht/~yourname/your-repo/tree/cool-branch/"
+end
+
+-- Remove trailing slashes
+repo_base = Regex.replace(repo_base, "\\/?$", "")
+
+source_link = HTML.select_one(page, selector)
+
+if (source_link) then
+   HTML.append_child(source_link, HTML.create_element("a", link_text))
+   link = HTML.select_one(source_link, "a")
+
+   url = repo_base .. "/" .. page_file
+   HTML.set_attribute(link, "href", url)
+end
diff --git a/site/css/site.css b/site/css/site.css
index 40d4f49..bcaf47d 100644
--- a/site/css/site.css
+++ b/site/css/site.css
@@ -98,6 +98,12 @@ div#footnotes {
     font-size: 0.8em;
 }
 
+div#source-link, div#source-link a {
+    color: #999;
+    font-size: 0.8em;
+    text-align: center;
+}
+
 div#timestamp {
     color: #777;
     font-size: 0.7em;
diff --git a/soupault.conf b/soupault.conf
index d9059e2..e4d5079 100644
--- a/soupault.conf
+++ b/soupault.conf
@@ -43,6 +43,9 @@
 [plugins.section-link-highlight]
   file = "plugins/section-link-highlight.lua"
 
+[plugins.source-link]
+  file = "plugins/source-link.lua"
+
 [widgets.asciinema-player-css]
   widget = "insert-if"
   html = "<link rel='stylesheet' type='text/css' href='/asciinema/asciinema-player.css' />"
@@ -60,6 +63,12 @@
   selector = "nav"
   active_link_class = "bold"
 
+[widgets.source-link]
+  widget = "source-link"
+  selector = "div#source-link"
+  link_text = "Source link for this page"
+  repo_base = "https://git.sr.ht/~hristoast/hristoast/tree/master/"
+
 [widgets.vidpos-js]
   widget = "insert-if"
   html = "<script src='/js/vidpos.js' type='text/javascript'></script>"
diff --git a/templates/main.html b/templates/main.html
index 84df2e3..f2f0669 100644
--- a/templates/main.html
+++ b/templates/main.html
@@ -54,5 +54,6 @@
     <script src="/js/tracking.js" type="text/javascript"></script>
     <noscript><p><img src="//stats.hristos.co/piwik.php?idsite=1&rec=1" style="border:0;" alt="" /></p></noscript>
     <div id="timestamp" class="center" title="A last modified timestamp derived from git.">This page was last modified on: <span id="git-timestamp"></span></div>
+    <div id="source-link"></div>
   </body>
 </html>
-- 
2.26.2