Contents

require 'mime/types'

class MultipartParams #:nodoc:
  attr_accessor :content_type, :body
  
  def initialize(param_hash={})
    boundary_token = [Array.new(8) {rand(256)}].join
    self.content_type = "multipart/form-data; boundary=#{boundary_token}"
    boundary_marker = "--#{boundary_token}\r\n"
    self.body = param_hash.map { |param_name, param_value|
      boundary_marker + case param_value
      when String
        text_to_multipart(param_name, param_value)
      when File
        file_to_multipart(param_name, param_value)
      end
    }.join('') + "--#{boundary_token}--\r\n"
  end

  protected
  def file_to_multipart(key,file)
    filename = File.basename(file.path)
    mime_types = MIME::Types.of(filename)
    mime_type = mime_types.empty? ? "application/octet-stream" : mime_types.first.content_type
    part = %Q[Content-Disposition: form-data; name="#{key}"; filename="#{filename}"\r\n]
    part += "Content-Transfer-Encoding: binary\r\n"
    part += "Content-Type: #{mime_type}\r\n\r\n#{file.read}\r\n"
  end

  def text_to_multipart(key,value)
    "Content-Disposition: form-data; name=\"#{key}\"\r\n\r\n#{value.to_s}\r\n"
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
viddler-0.2.0	lib/viddler/multipart_params.rb
viddler-0.1.0	lib/viddler/multipart_params.rb