Added Ace::SassFilter.

lib/ace/filters/sass.rb

@@ -0,0 +1,24 @@
+# encoding: utf-8
+
+require "sass"
+require "ace/filters"
+
+module Ace
+  class SassFilter < Filter
+    def call(item, content)
+      if item.output_path && item.output_path.end_with?(".scss")
+        item.output_path.sub!(/scss$/, "css")
+        begin
+          engine = Sass::Engine.new(content, {:syntax => :scss})
+          output = engine.render
+        rescue Exception => e
+          warn "~~ SassFilter exception: #{e}"
+          abort
+        end
+        return output
+      else
+        return content
+      end
+    end
+  end
+end