module SendZip

# File lib/send_zip.rb, line 5
def send_zip(path, options = {})
  filename = options[:filename] || File.basename(path) + '.zip'
  type = options[:type] || 'application/zip'
  disposition = options[:disposition] == 'inline' ? 'inline' : 'attachment'
  buffer_size = options[:buffer_size] || 1048576
  encoding = options[:encoding] == :shift_jis ? :shif_jis : :utf8

  headers["Content-Type"] = type
  headers["Content-Disposition"] = disposition + '; filename=' + filename
  headers["Transfer-Encoding"] = "chunked"
  headers["Cache-Control"] ||= "no-cache"

  self.response_body = Rack::Chunked::Body.new(
    Enumerator.new { |o|
      Zipping.files_to_zip(o, path, buffer_size, encoding)
    }
  )
end