254     def match(self, buf, pos):  argument
255         match = self._matcher.match(buf, pos)
885     def _unpack_uint32(buf):  argument
886         return struct.unpack('<I', buf)[0]
890     def _unpack_uint32_iter(buf):  argument
891         for p in struct.iter_unpack('<I', buf):
935             buf = fp.read(4)
936             if not buf:
939             record_size = self._unpack_uint32(buf)
950                 buf = fp.read(record_size)
952                 dep_iter = self._unpack_uint32_iter(buf)
974                 buf = fp.read(record_size - 4)
975                 path = self._extract_path(buf, encoding)
976                 buf = fp.read(4)
977                 checksum = 0xffffffff ^ self._unpack_uint32(buf)