Merb support

Manifest

@@ -68,6 +68,7 @@ lib/compass/exec.rb
 lib/compass/frameworks/blueprint.rb
 lib/compass/frameworks/compass.rb
 lib/compass/frameworks.rb
+lib/compass/merb.rb
 lib/compass/validate/COPYRIGHT.html
 lib/compass/validate/css-validator-javadoc.jar
 lib/compass/validate/css-validator.jar

compass.gemspec

@@ -54,6 +54,7 @@ extra_rdoc_files:
 - lib/compass/frameworks/blueprint.rb
 - lib/compass/frameworks/compass.rb
 - lib/compass/frameworks.rb
+- lib/compass/merb.rb
 - lib/compass/validate/COPYRIGHT.html
 - lib/compass/validate/css-validator-javadoc.jar
 - lib/compass/validate/css-validator.jar
@@ -138,6 +139,7 @@ files:
 - lib/compass/frameworks/blueprint.rb
 - lib/compass/frameworks/compass.rb
 - lib/compass/frameworks.rb
+- lib/compass/merb.rb
 - lib/compass/validate/COPYRIGHT.html
 - lib/compass/validate/css-validator-javadoc.jar
 - lib/compass/validate/css-validator.jar

lib/compass.rb

@@ -11,3 +11,6 @@ module Compass
 end
 
 require File.join(File.dirname(__FILE__), 'compass', 'frameworks')
+# make sure we're running inside Merb
+require File.join(File.dirname(__FILE__), 'compass', 'merb') if defined?(Merb::Plugins)  
+

lib/compass/merb.rb

@@ -0,0 +1,43 @@
+# To configure Merb to use compass do the following:
+# Merb::BootLoader.after_app_loads do
+#   require 'merb-haml'
+#   require 'compass'
+# end
+#
+# To use a different sass stylesheets locations as is recommended by compass
+# add this configuration to your configuration block:
+#
+# Merb::Config.use do |c|
+#   c[:compass] = {
+#     :stylesheets => 'app/stylesheets',
+#     :compiled_stylesheets => 'public/stylesheets/compiled'
+#   }
+# end
+
+Merb::BootLoader.after_app_loads do
+  #set up sass if haml load didn't do it -- this happens when using a non-default stylesheet location.
+  unless defined?(Sass::Plugin)
+    require "sass/plugin" 
+    Sass::Plugin.options = Merb::Config[:sass] if Merb::Config[:sass]
+  end
+
+  # default the compass configuration if they didn't set it up yet.
+  Merb::Config[:compass] ||= {}
+  
+  # default sass stylesheet location unless configured to something else
+  Merb::Config[:compass][:stylesheets] ||= Merb.dir_for(:stylesheet) / "sass"
+  
+  # default sass css location unless configured to something else
+  Merb::Config[:compass][:compiled_stylesheets] ||= Merb.dir_for(:stylesheet)
+  
+  #define the template hash for the project stylesheets as well as the framework stylesheets.
+  template_location = {
+    Merb::Config[:compass][:stylesheets] => Merb::Config[:compass][:compiled_stylesheets]
+  }
+  Compass::Frameworks::ALL.each do |framework|
+    template_location[framework.stylesheets_directory] = File.join(Merb::Config[:compass][:compiled_stylesheets], framework.name)
+  end
+  
+  #configure Sass to know about all these sass locations.
+  Sass::Plugin.options[:template_location] = template_location
+end