zip_for_win.rb

require 'zip'

class ZipForWin
  def zip_files(directory)
    Zip::File.open("#{directory}.zip", Zip::File::CREATE) do |zipfile|
      # 再帰的にサブディレクトリも格納する
      Dir[File.join(directory, '**', '**')].each do |entry|
        # 相対パスで格納
        entry_path = entry.sub(directory, '')
        # windows で解凍できるように Shift_JIS へ変換
        sjis_entry_path = entry_path.encode(Encoding::CP932, invalid: :replace, undef: :replace)
        zipfile.add(sjis_entry_path, entry)
      end
    end
  end
end