class Gem::Package::TarWriter

def add_file_simple(name, mode, size) # :yields: io

:yields: io 
def add_file_simple(name, mode, size) # :yields: io
  check_closed
  name, prefix = split_name name
  header = Gem::Package::TarHeader.new(name: name, mode: mode,
                                       size: size, prefix: prefix,
                                       mtime: Gem.source_date_epoch).to_s
  @io.write header
  os = BoundedStream.new @io, size
  yield os if block_given?
  min_padding = size - os.written
  @io.write("\0" * min_padding)
  remainder = (512 - (size % 512)) % 512
  @io.write("\0" * remainder)
  self
end