binaryio.py 文件源码

def read_var_short(self):
        ret = 0
        size = 0
        while size < 16:
            byte = self.read_byte()
            has_next = (byte & 0x80) == 0x80
            if size > 0:
                ret = ret + ((byte & 0x7F) << size)
            else:
                ret = ret + (byte & 0x7F)
            size = size + 7
            if not has_next:
                if ret > 32767:
                    ret = ret - 65536
                return ctypes.c_int16(ret).value
        raise RuntimeError("Too much data")