From 9f128f8fed549b555ee910eaac337dfbe4fc533f Mon Sep 17 00:00:00 2001
From: hotovson <pepe.hotovson@gmail.com>
Date: Sun, 6 Mar 2011 19:58:35 +0100
Subject: [PATCH] Added Ace::PygmentsFilter for syntax highlighting via
 pygments.org's pygmentize.

---
 lib/ace/filters/pygments.rb | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 lib/ace/filters/pygments.rb

diff --git a/lib/ace/filters/pygments.rb b/lib/ace/filters/pygments.rb
new file mode 100644
index 0000000..33a4a61
--- /dev/null
+++ b/lib/ace/filters/pygments.rb
@@ -0,0 +1,19 @@
+# encoding: utf-8
+
+require "ace/filters"
+require "nokogiri"
+require "albino"
+
+class PygmentsFilter < Filter
+  def call(item, content)
+    puts 'PygmentsFilter ************************'
+    doc = Nokogiri::HTML(content)
+    doc.css('pre').each do |pre|
+      puts "\nWARNING: '#{item.original_path}' - element <pre> not contains attribute 'lang'\n" if pre['lang'].nil?
+      puts "\nWARNING: '#{item.original_path}' - attribute 'lang' not contains any value\n" if  !pre['lang'].nil? && pre['lang'].empty?
+      puts "*** Syntax highlight using '#{pre['lang']}' lexer" unless pre['lang'].nil? || pre['lang'].empty?
+      pre.replace Albino.colorize(pre.content, pre['lang']) unless pre['lang'].nil? || pre['lang'].empty?
+    end
+    doc
+  end
+end