extract_files

# File lib/rubygems/package/old.rb, line 51
  def extract_files destination_dir
    verify

    errstr = "Error reading files from gem"

    open @gem, 'rb' do |io|
      read_until_dashes io # spec
      header = file_list io
      raise Gem::Exception, errstr unless header

      header.each do |entry|
        full_name = entry['path']

        destination = install_location full_name, destination_dir

        file_data = ''

        read_until_dashes io do |line|
          file_data << line
        end

        file_data = file_data.strip.unpack("m")[0]
        file_data = Zlib::Inflate.inflate file_data

        raise Gem::Package::FormatError, "#{full_name} in #{@gem} is corrupt" if
          file_data.length != entry['size'].to_i

        FileUtils.rm_rf destination

        FileUtils.mkdir_p File.dirname destination

        open destination, 'wb', entry['mode'] do |out|
          out.write file_data
        end

        say destination if Gem.configuration.really_verbose
      end
    end
  rescue Zlib::DataError
    raise Gem::Exception, errstr
  end