css_js_generator.rb

# == css_js_generator
# 
# It generates one big file from all CSS and from all JS small files. It  
# scans public/stylesheets and public/javascripts, gets all files from there  
# and creates application.css and  application.js). Order can be specified  
# in css_js_generator.rb. There are also 'notifier' script, it uses  
# inotifywatch program for tracking changes in public directory and running  
# css_js_generator.rb after every change in public directory. So, big files  
# will be generated automatically and you don't need to run it  
# css_js_generator.rb after every change of files in public dir.

require 'rubygems'
#require 'packr'

class CssAccumulator

  def initialize
    @input_dir = File.expand_path(File.dirname(__FILE__) + '/public/stylesheets')
  end

  def get_filelist
    global_files = [
      @input_dir + '/framework/global/global.reset.css', 
      @input_dir + '/framework/global/global.css',
      @input_dir + '/framework/global/global.reset.ie.css',
      @input_dir + '/framework/global/global.ie.css'
    ]
    dirs = [ '/framework/layout', '/framework/mixin', '/framework/block' ]
    dirs_with_unexpanded_symlinks = global_files + dirs.inject([]) do |files, dir|
      files_of_dir = Dir[@input_dir + dir + '/**/*'] 
      files_of_dir.each do |file|
        if File.exists?(file)
          if File.symlink?(file)
            real_dir = File.readlink(file)
            files += Dir[File.expand_path(File.dirname(file) + '/' + real_dir) + '/**/*']
          else
            files << file
          end
        end
      end
      files
    end
  end

  def accumulated_text
    usual_text = ""
    ie_text = ""
    get_filelist.each do |files|
      files.each do |file| 
        if File.exists?(file) && File.file?(file)
          text = File.read(file)
          if file =~ /\.ie\.css/
            ie_text += text
          else
            usual_text += text
          end
        end
      end
    end
    [ usual_text, ie_text ]
  end

  def accumulate!
    usual_text, ie_text = accumulated_text
    File.open(@input_dir + '/application.css', 'w') { |file| file.write(usual_text) }
    File.open(@input_dir + '/application.ie.css', 'w') { |file| file.write(ie_text) }
  end

end

class JsAccumulator

  def initialize
    @input_dir = File.expand_path(File.dirname(__FILE__) + '/public/javascripts')
  end

  def get_filelist
    dirs = [ '/framework/global', '/framework/layout', '/framework/mixin', '/framework/block' ]
    dirs.inject([]) do |files, dir|
      files_of_dir = Dir[@input_dir + dir + '/**/*'] 
      files_of_dir.each do |file|
        if File.exists?(file)
          if File.symlink?(file)
            real_dir = File.readlink(file)
            files += Dir[File.expand_path(File.dirname(file) + '/' + real_dir) + '/**/*']
          else
            files << file
          end
        end
      end
      files
    end
  end

  def accumulated_text
    text = ""
    get_filelist.each do |files|
      files.each do |file| 
        text += File.read(file) if File.exists?(file) && File.file?(file)
      end
    end
    text
  end

  def accumulate!
    text = accumulated_text
    File.open(@input_dir + '/application.js', 'w') { |file| file.write(text) }
  end

end


CssAccumulator.new.accumulate!
JsAccumulator.new.accumulate!

#js_code = File.read(File.expand_path(File.dirname(__FILE__)) + '/public/javascripts/jquery.js')
#js_code += File.read(File.expand_path(File.dirname(__FILE__)) + '/public/javascripts/jquery.form.js')
#js_code += File.read(File.expand_path(File.dirname(__FILE__)) + '/public/javascripts/app.js')
#compressed = Packr.pack(js_code, :shrink_vars => true)
#File.open(File.expand_path(File.dirname(__FILE__)) + '/public/javascripts/app.min.js', 'wb') { |f| f.write(compressed) }