module Selenium::WebDriver::Zipper

def with_tmp_zip(&blk)
  # can't use Tempfile here since it doesn't support File::BINARY mode on 1.8
  # can't use Dir.mktmpdir(&blk) because of http://jira.codehaus.org/browse/JRUBY-4082
  tmp_dir = Dir.mktmpdir
  zip_path = File.join(tmp_dir, 'webdriver-zip')
  begin
    Zip::File.open(zip_path, Zip::File::CREATE, &blk)
  ensure
    FileUtils.rm_rf tmp_dir
    FileUtils.rm_rf zip_path
  end
end