# File webrick/httputils.rb, line 218
      def initialize(*args)
        @name = @filename = @next_data = nil
        if args.empty?
          @raw_header = []
          @header = nil
          super("")
        else
          @raw_header = EmptyRawHeader
          @header = EmptyHeader 
          super(args.shift)
          unless args.empty?
            @next_data = self.class.new(*args)
          end
        end
      end

# File webrick/httputils.rb, line 242
      def <<(str)
        if @header
          super
        elsif str == CRLF
          @header = HTTPUtils::parse_header(@raw_header)
          if cd = self['content-disposition']
            if /\s+name="(.*?)"/ =~ cd then @name = $1 end
            if /\s+filename="(.*?)"/ =~ cd then @filename = $1 end
          end
        else
          @raw_header << str
        end
        self
      end

# File webrick/httputils.rb, line 234
      def [](*key)
        begin
          @header[key[0].downcase].join(", ")
        rescue StandardError, NameError
          super
        end
      end

# File webrick/httputils.rb, line 257
      def append_data(data)
        tmp = self
        while tmp
          unless tmp.next_data 
            tmp.next_data = data
            break
          end
          tmp = tmp.next_data
        end
        self
      end

# File webrick/httputils.rb, line 269
      def each_data
        tmp = self
        while tmp
          next_data = tmp.next_data
          yield(tmp)
          tmp = next_data
        end
      end

# File webrick/httputils.rb, line 278
      def list
        ret = []
        each_data{|data|
          ret << data.to_s
        }
        ret
      end

# File webrick/httputils.rb, line 288
      def to_s
        String.new(self)
      end