class Zip::OutputStream

def initialize(file_name, stream = false, encrypter = nil)
  super()
  @file_name = file_name
  @output_stream = if stream
                     iostream = @file_name.dup
                     iostream.reopen(@file_name)
                     iostream.rewind
                     iostream
                   else
                     ::File.new(@file_name, 'wb')
                   end
  @entry_set = ::Zip::EntrySet.new
  @compressor = ::Zip::NullCompressor.instance
  @encrypter = encrypter || ::Zip::NullEncrypter.new
  @closed = false
  @current_entry = nil
  @comment = nil
end