Zip files and directories recursively

gistfile1.rb

require 'zip/zip'

module Zip
  
  def self.create(filename, *files)
    Zip::ZipFile.open(filename, Zip::ZipFile::CREATE) do |zip|
      files.each { |file| add(zip, file) }            
    end
  end

  private

  def self.add(zip, file)
    if File.directory?(file)
      begin
        zip.mkdir(file)
      rescue Errno::EEXIST; end
      Dir["#{file}/**"].each do |ffile|
        add(zip, ffile)
      end
    else
      begin
        zip.add(file, file)
      rescue Zip::ZipEntryExistsError; end
    end
  end
  
end

Zip.create('test.zip', *ARGV)