add --compile options to use uglifier/yui-compressor to compile JS/CSS

Gemfile

@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in catapult.gemspec
-gemspec
+gemspec

example/assets/javascripts/app.js

@@ -1 +1,5 @@
-//= require_tree .
+//= require_tree .
+
+var init = function(){
+  alert('init 2!');
+};

example/assets/stylesheets/app.css

@@ -1 +1,6 @@
-/*= require_tree .*/
+/*= require_tree .*/
+
+body {
+  color: #000;
+  background: #FFF;
+}

lib/catapult.rb

@@ -6,6 +6,7 @@
 
 module Catapult
   autoload :CLI, 'catapult/cli'
+  autoload :Compressor, 'catapult/compressor'
   autoload :TryStatic, 'catapult/try_static'
 
   def self.root

lib/catapult/cli.rb

@@ -15,10 +15,16 @@ def self.source_root
     desc 'build [asset1 asset2..]', 'Build project'
 
     method_option :target, :aliases => '-t', :desc => 'Directory to compile assets to'
+    method_option :compile, :type => :boolean, :aliases => '-c', :desc => 'Compile and minify assets'
 
     def build(*assets)
       target = Pathname(options[:target] || './public/assets')
 
+      if options[:compile]
+        Catapult.environment.js_compressor  = Compressor::JS.new
+        Catapult.environment.css_compressor = Compressor::CSS.new
+      end
+
       say "Building: #{Catapult.root}"
 
       Catapult.environment.each_logical_path(assets) do |logical_path|
@@ -63,4 +69,4 @@ def new(name)
       directory('templates/app', name)
     end
   end
-end
+end

lib/catapult/compressor.rb

@@ -0,0 +1,18 @@
+module Catapult
+  module Compressor
+    class JS
+      def compress(source, options = {})
+        require 'uglifier'
+        Uglifier.compile(source, options)
+      end
+    end
+
+    class CSS
+      def compress(source, options = {})
+        require 'yui/compressor'
+        compressor = YUI::CssCompressor.new(options)
+        compressor.compress(source)
+      end
+    end
+  end
+end