class Hurley::Multipart::FilePart

# File lib/hurley/multipart.rb, line 120
def initialize(boundary, name, io, header)
  file_length = io.respond_to?(:length) ?  io.length : File.size(io.local_path)

  @head = build_head(boundary, name, io.original_filename, io.content_type, file_length,
                     io.respond_to?(:opts) ? io.opts.merge(header) : header)

  @length = @head.bytesize + file_length + FOOT.length
  @io = CompositeReadIO.new(@length, StringIO.new(@head), io, StringIO.new(FOOT))
end

# File lib/hurley/multipart.rb, line 132
def build_head(boundary, name, filename, type, content_len, header)
  content_id = if cid = header[:content_id]
    CID_FORMAT % cid
  end


  HEAD_FORMAT % [
    boundary,
    header[:content_disposition] || DEFAULT_DISPOSITION,
    name.to_s,
    filename.to_s,
    content_len.to_i,
    content_id,
    header[:content_type] || type,
    header[:content_transfer_encoding] || DEFAULT_TR_ENCODING,
  ]
end