Function main

convert_v3_to_v4.py:129–169

the main function when used in cli mode

()

def main():
    """the main function when used in cli mode"""

    logger.addHandler(logging.StreamHandler())
    logger.setLevel(logging.DEBUG)

    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument(
        "-i",
        "--in_file",
        type=argparse.FileType("r"),
        help="The file to convert from (v3). If absent, reads xml string from stdin.",
    )
    parser.add_argument(
        "-o",
        "--out_file",
        nargs="?",
        type=argparse.FileType("w"),
        default=sys.stdout,
        help="The file to write the converted xml (V4)."
        " Prints to stdout if not specified.",
    )

    class ArgsType(typing.NamedTuple):
        """Dummy class to provide type hinting to arguments parsed with argparse"""

        in_file: typing.Optional[typing.TextIO]
        out_file: typing.TextIO

    args: ArgsType = parser.parse_args()

    if args.in_file is None:
        if not sys.stdin.isatty():
            args.in_file = sys.stdin
        else:
            logging.error(
                "The input file was not specified, nor a stdin stream was detected."
            )
            sys.exit(1)

    convert_stream(args.in_file, args.out_file)


if __name__ == "__main__":