def test_unpackers(): b = bytes(range(256)) assert util.unpack_int32_from(b, 0) == (50462976,) assert util.unpack_int32_from(b, 42) == (757869354,) assert util.unpack_int64_from(b, 0) == (506097522914230528,) assert util.unpack_int64_from(b, 42) == (3544384782113450794,) assert util.unpack_uint16_from(b, 0) == (256,) assert util.unpack_uint16_from(b, 42) == (11050,) assert util.unpack_uint32_from(b, 0) == (50462976,) assert util.unpack_uint32_from(b, 42) == (757869354,) assert util.unpack_uint64_from(b, 0) == (506097522914230528,) assert util.unpack_uint64_from(b, 42) == (3544384782113450794,)
def _read_le_int32(self): result, = unpack_int32_from(self.binary, self.cursor) self.cursor += 4 return result
def _get_version(self): result, = unpack_int32_from(self.binary, self.cursor) return result
def _read_le_int32(self): #unpack_uint32_from方法(buffer,offset)解析数据[4] result, = unpack_int32_from(self.binary, self.cursor) #解析数据 self.cursor += 4 #解析完成后,对应记录数据解析的位置 return result