Factored out a Configuration object to parse stand-alone project configuration files.

lib/compass/configuration.rb

@@ -0,0 +1,17 @@
+module Compass
+  class Configuration
+    attr_accessor :css_dir, :sass_dir, :images_dir, :javascripts_dir
+
+    # parses a manifest file which is a ruby script
+    # evaluated in a Manifest instance context
+    def parse(config_file)
+      open(config_file) do |f|
+        eval(f.read, instance_binding, config_file)
+      end
+    end
+
+    def instance_binding
+      binding
+    end
+  end
+end

lib/compass/exec.rb

@@ -2,6 +2,7 @@ require 'optparse'
 require 'rubygems'
 require 'haml'
 require File.join(Compass.lib_directory, 'compass', 'logger')
+require File.join(Compass.lib_directory, 'compass', 'configuration')
 
 module Compass
   module Exec