Dir.clone! for Ruby

gistfile1.rb

class Dir

  def self.clone!(source, destination, exclude)
    exclude = ["^\\.{1,2}$"].concat(exclude).uniq

    FileUtils.mkdir destination unless Dir.exists? destination

    Dir.foreach(source) do |file|
      next if exclude.detect { |pattern| file.match(/#{pattern}/i) }

      source_path      = File.join(source, file)
      destination_path = File.join(destination, file)

      if File.directory?(source_path)
        FileUtils.mkdir(destination_path)
        clone! source_path, destination_path, exclude
      else
        FileUtils.cp(source_path, destination_path)
      end
    end
  end

end