From 99cef1c9a67c558e9ca91cdd5d82cc74ed14e29a Mon Sep 17 00:00:00 2001
From: Marcus Mateus <marcus@simplitex.com>
Date: Tue, 12 Jun 2012 22:17:26 -0500
Subject: [PATCH] Refactored and simplified sprockets asset caching

 * Done primarily so postprocessors would work properly
    (i.e. sprockets-commonjs)
 * Potentially eliminates need for all the JHW specific template
    engines, except NilTemplate
---
 lib/jasmine/headless/files_list.rb | 31 +++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/lib/jasmine/headless/files_list.rb b/lib/jasmine/headless/files_list.rb
index a97f11b..a26c560 100644
--- a/lib/jasmine/headless/files_list.rb
+++ b/lib/jasmine/headless/files_list.rb
@@ -153,10 +153,10 @@ module Jasmine::Headless
           register_engine ".#{extension}", Jasmine::Headless::NilTemplate
         end
 
-        register_engine '.coffee', Jasmine::Headless::CoffeeTemplate
-        register_engine '.js', Jasmine::Headless::JSTemplate
-        register_engine '.css', Jasmine::Headless::CSSTemplate
-        register_engine '.jst', Jasmine::Headless::JSTTemplate
+        # register_engine '.coffee', Jasmine::Headless::CoffeeTemplate
+        # register_engine '.js', Jasmine::Headless::JSTemplate
+        # register_engine '.css', Jasmine::Headless::CSSTemplate
+        # register_engine '.jst', Jasmine::Headless::JSTTemplate
       end
 
       @sprockets_environment
@@ -211,7 +211,28 @@ module Jasmine::Headless
           alert_time = nil
         end
 
-        sprockets_environment.find_asset(file, :bundle => false).body
+        asset = sprockets_environment.find_asset(file, :bundle => false)
+        cache_file = File.join('.jhw-cache', 'code', asset.logical_path)
+        # Process & cache the asset only if needed 
+        unless File.exist?(cache_file) && (File.mtime(file) > File.mtime(cache_file))
+          FileUtils.mkdir_p File.dirname(cache_file)
+          asset.write_to(cache_file)
+        end
+
+        html = ''
+        case asset.content_type
+        when 'application/javascript'
+          html = %{<script type="text/javascript" src="#{File.expand_path(cache_file)}"></script>}
+          # NOTE: In future sprockets versions below could be simplified w/ asset.extensions.include?('.coffee')
+          if asset.pathname.basename.to_s.scan(/\.[^.]+/).include?('.coffee') 
+            html += %{\n<script type="text/javascript">window.CSTF['#{File.basename(cache_file)}'] = '#{file}';</script>}
+          end
+        when 'text/css'
+          html = %{<link rel="stylesheet" href="#{File.expand_path(cache_file)}" type="text/css" />}
+        else
+          html = asset.body
+        end
+        html
       end.compact.reject(&:empty?)
     end