Function make_string

src/pointers/bindings.py:397–426

(data: StringLike)

@handle
def make_string(data: StringLike) -> Union[bytes, ctypes.c_char_p]:
    if (type(data) not in {VoidPointer, str, bytes, TypedCPointer}) and data:
        raise InvalidBindingParameter(
            f"expected a string-like object, got {repr(data)}"  # noqa
        )

    if isinstance(data, bytes):
        return data

    is_typed_ptr: bool = isinstance(data, TypedCPointer)

    if isinstance(data, VoidPointer) or isinstance(data, TypedCPointer):
        # mypy is forcing me to call this twice
        if is_typed_ptr and (data.type is not bytes):  # type: ignore
            raise InvalidBindingParameter(
                f"{data} does not point to bytes",
            )

        if is_typed_ptr and (not data.alt):  # type: ignore
            return ctypes.c_char_p.from_address(data.ensure())
        return ctypes.c_char_p(data.ensure())

    if isinstance(data, str):
        return data.encode()

    if not data:
        data = ctypes.c_char_p(None)  # type: ignore

    assert isinstance(data, ctypes.c_char_p), f"{data} is not a char*"
    return data


def make_format(*args: Format) -> Iterator[Format]: