copy_dpi_files.command

#!/usr/bin/env ruby
require 'fileutils'

working_dir = File.expand_path File.dirname(__FILE__)
["drawable-xxhdpi","drawable-xhdpi", "drawable-hdpi", "drawable-mdpi"].each do |dir|
  directory = "#{working_dir}/#{dir}"
  FileUtils.rm_rf(directory)
  FileUtils.mkdir_p(directory)
end

Dir.entries(working_dir).each do |filename|    
  if filename =~ /(.*)_(x{0,2}h|m)(\..*)$/
    new_file_name = "#{$1}#{$3}"
    FileUtils.mv("#{working_dir}/#{filename}", "#{working_dir}/drawable-#{$2}dpi/#{new_file_name}", :force => true)      
  end
end