Function make_field

packages/ibkr/ref/source/pythonclient/ibapi/comm.py:41–61

adds the NULL string terminator

(val)

def make_field(val) -> str:
    """adds the NULL string terminator"""
    if val is None:
        raise ValueError("Cannot send None to TWS")

    # if string is not empty and contains invalid symbols
    if val is not None and type(val) == str and val and not isAsciiPrintable(val):
        raise ClientException(
            INVALID_SYMBOL.code(),
            INVALID_SYMBOL.msg(),
            val.encode(sys.stdout.encoding, errors="ignore").decode(
                sys.stdout.encoding
            ),
        )

    # bool type is encoded as int
    if val is not None and type(val) == bool:
        val = int(val)

    field = str(val) + "\0"
    return field


def make_field_handle_empty(val) -> str: