From 73039c316ef1ebbf79e32bf475390a8f1f12df57 Mon Sep 17 00:00:00 2001
From: "Helmut K. C. Tessarek" <tessarek@evermeet.cx>
Date: Tue, 27 Feb 2018 21:40:04 -0500
Subject: [PATCH] 2nd attempt: add plugin to calc SRI hash; add CDN to 'Get
 Started' page

---
 src/doc/_plugins/sri_hash.rb | 20 ++++++++++++++++++++
 src/doc/get-started.html     | 15 +++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 src/doc/_plugins/sri_hash.rb

diff --git a/src/doc/_plugins/sri_hash.rb b/src/doc/_plugins/sri_hash.rb
new file mode 100644
index 000000000..63e0242ad
--- /dev/null
+++ b/src/doc/_plugins/sri_hash.rb
@@ -0,0 +1,20 @@
+##
+# Generate an SRI hash for a given file
+
+require 'digest'
+
+module Jekyll
+	class GetSriHash < Liquid::Tag
+		def initialize(tag_name, text, tokens)
+			super
+			@filename = text.strip
+		end
+
+		def render(context)
+			sha256 = Digest::SHA256.file(@filename)
+			"sha256-#{sha256.base64digest}"
+		end
+	end
+end
+
+Liquid::Template.register_tag('sri_hash', Jekyll::GetSriHash)
diff --git a/src/doc/get-started.html b/src/doc/get-started.html
index c2c9437aa..13e552e7c 100644
--- a/src/doc/get-started.html
+++ b/src/doc/get-started.html
@@ -69,6 +69,21 @@ relative_path: ../
     </div>
   </section>
 
+  <section class="get-started-CDN margin-top-lg" id="get-started-CDN">
+    <h2 class="page-header">Using {{ site.forkawesome.name }} with a CDN</h2>
+  </section>
+
+  <div class="row">
+    <div class="col-md-12">
+      <p>Thanks to <a href="https://www.jsdelivr.com">jsDelivr</a>, {{ site.forkawesome.name }} is available via a CDN as well.</p>
+      <p>
+{% highlight html %}
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/fork-awesome@{{ site.forkawesome.version }}/css/fork-awesome.min.css" integrity="{% sri_hash css/fork-awesome.min.css %}" crossorigin="anonymous">
+{% endhighlight %}
+      </p>
+    </div>
+  </div>
+
   <section class="get-started-more margin-top-lg" id="get-started-more">
     <h2 class="page-header">More Information</h2>
   </section>