decode chunk modifications

snippet.py

def decode_chunk(chunk):
  """
  Experiment: decode a chunk!
  <snip>
  """
  # give ourselves a copy of this record as a bytearray to sanitize things a bit.
  record = bytearray(chunk)
  if chunk == 0x1f:
    try:
      print hex(record)
    except:
      pass
  else:
    record.extend(chunk)


def do_chunk(handle):
  """read a chunk, and call decode_chunk"""
  chunk = read_chunk(handle)
  decode_chunk(chunk[3]) # --chunk 4, so we only read every 4th byte (the rest are NULLs)