lib/crush/rainpress.rb in crush-0.2.0 vs lib/crush/rainpress.rb in crush-0.3.0

@@ -1,15 +1,27 @@
+require "crush/engine"
+
 module Crush
+  # Engine implementation of the CSS compressor,
+  # Rainpress. See:
+  #
+  # https://rubygems.org/gems/rainpress
   class Rainpress < Engine
+    self.default_mime_type = "text/css"
+    
     def self.engine_initialized?
       !!(defined? ::Rainpress)
     end
     
     def initialize_engine
       require_template_library "rainpress"
     end
     
-    def evaluate
-      ::Rainpress.compress(data, options)
+    def prepare
+      @output = nil
+    end
+    
+    def evaluate(scope, locals, &block)
+      @output ||= ::Rainpress.compress(data, options)
     end
   end
 end