From 6315527b2f7676ae4afa1ce5cb78e11d25917f23 Mon Sep 17 00:00:00 2001
From: Frederic Hemberger <mail@frederic-hemberger.de>
Date: Tue, 4 Oct 2011 19:18:40 +0200
Subject: [PATCH] Adds CDATA sections to atom.xml, fixes #198

---
 .themes/classic/source/atom.xml | 12 +++++-------
 plugins/octopress_filters.rb    |  5 +++++
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/.themes/classic/source/atom.xml b/.themes/classic/source/atom.xml
index ff8d259..83af3f8 100644
--- a/.themes/classic/source/atom.xml
+++ b/.themes/classic/source/atom.xml
@@ -4,26 +4,24 @@ layout: nil
 <?xml version="1.0" encoding="utf-8"?>
 <feed xmlns="http://www.w3.org/2005/Atom">
 
-  <title>{{ site.title | xml_escape }}</title>
+  <title><![CDATA[{{ site.title }}]]></title>
   <link href="{{ site.url }}/atom.xml" rel="self"/>
   <link href="{{ site.url }}/"/>
   <updated>{{ site.time | date_to_xmlschema }}</updated>
   <id>{{ site.url }}/</id>
   <author>
-    <name>{{ site.author | xml_escape }}</name>
-    {% if site.email %}
-      <email>{{ site.email | xml_escape }}</email>
-    {% endif %}
+    <name><![CDATA[{{ site.author | strip_html }}]]></name>
+    {% if site.email %}<email><![CDATA[{{ site.email }}]]></email>{% endif %}
   </author>
   <generator uri="http://octopress.org/">Octopress</generator>
 
   {% for post in site.posts limit: 20 %}
   <entry>
-    <title>{{ post.title | xml_escape }}</title>
+    <title type="html"><![CDATA[{{ post.title | cdata_escape }}]]></title>
     <link href="{{ site.url }}{{ post.url }}"/>
     <updated>{{ post.date | date_to_xmlschema }}</updated>
     <id>{{ site.url }}{{ post.id }}</id>
-    <content type="html">{{ post.content | expand_urls: site.url | xml_escape }}</content>
+    <content type="html"><![CDATA[{{ post.content | expand_urls: site.url | cdata_escape }}]]></content>
   </entry>
   {% endfor %}
 </feed>
diff --git a/plugins/octopress_filters.rb b/plugins/octopress_filters.rb
index 7eaaaa7..ef8c1fb 100644
--- a/plugins/octopress_filters.rb
+++ b/plugins/octopress_filters.rb
@@ -63,6 +63,11 @@ module OctopressLiquidFilters
     return (content.nil?) ? input : content
   end
 
+  # Escapes CDATA sections in post content
+  def cdata_escape(input)
+    input.gsub(/<!\[CDATA\[/, '&lt;![CDATA[').gsub(/\]\]>/, ']]&gt;')
+  end
+
   # Replaces relative urls with full urls
   def expand_urls(input, url='')
     url ||= '/'