def method_arguments_opaque_decode(buf: bytes) -> List[MethodArgument]:
args = list()
method_args_reader = StreamReader(buf)
while not method_args_reader.done_reading():
arg = StreamReader(method_args_reader.read_bytes())
name = arg.read_bytes() # not using the arg name
arg_type = arg.read_uint16()
if arg_type == 0:
val = arg.read_uint32()
args.append(Uint32Arg(val))
elif arg_type == 1:
val = arg.read_uint64()
args.append(Uint64Arg(val))
elif arg_type == 2:
val = arg.read_string()
args.append(StringArg(val))
elif arg_type == 3:
val = arg.read_bytes()
args.append(BytesArg(val))
else:
raise ValueError(
f'received MethodArgument {name} has an unknown type: {arg_type}'
)
return args
def test_read_string(self):
stream = bytes([
0x05, 0x00, 0x00, 0x00,
ord('h'),
ord('e'),
ord('l'),
ord('l'),
ord('o'), 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
ord('w'),
ord('o'),
ord('r'),
ord('l'),
ord('d'),
ord('!')
])
reader = StreamReader(stream)
expected1 = 'hello'
self.assertEqual(expected1, reader.read_string())
expected2 = 'world!'
self.assertEqual(expected2, reader.read_string())
reader.close()