Asset packaging rake task

assets.rake

# Rake task for compiling CoffeeScript and SASS (Compass).
#
# Author: Kim Burgestrand <http://burgestrand.se/>
# Date: 6th October 2010
# License: X11 License (MIT License)
# URL: http://gist.github.com/gists/613114
desc "Compiles CoffeeScript using Barrista (but only if they changed)"
task 'coffee:compile' => :environment do
  require 'barista'
  abort "'#{Barista::Compiler.bin_path}' is unavailable." unless Barista::Compiler.available?
  Barista.compile_all! false, false
end

desc "Compiles SASS using Compass"
task 'sass:compile' do
  sh 'bundle exec compass compile'
end

namespace :assets do
  desc "Compiles all assets (CSS/JS)"
  task :compile => ['coffee:compile', 'sass:compile']
  
  desc "Bundles all assets with Jammit"
  task :bundle do
    require 'jammit'
    Jammit.package!
  end
  
  desc "Removes all compiled and bundled assets"
  task :clean => :environment do
    files = []
    files << ['assets']
    files << ['javascripts', 'compiled']
    files << ['stylesheets', 'compiled']
    files = files.map { |path| Dir[Rails.root.join('public', *[path, '*.*'])] }.flatten
    
    puts "Removing:"
    files.each do |file|
      puts "  #{file.gsub(Rails.root.to_s + '/', '')}"
    end
    
    File.delete *files
  end
end

desc "Compiles and bundles all assets"
task :assets => ['assets:compile', 'assets:bundle']