INNER CODE UNIT · Python

ascii_validator

keiyoushi/extensions-source · ext-bootstrap.py:9

def ascii_validator(value: str) -> str:
    value = value.strip()
    try:
        value.encode("ascii")
    except UnicodeEncodeError:
        raise argparse.ArgumentTypeError(f"'{value}' is not ASCII")

    return value


def validate_args(args: argparse.Namespace, parser: argparse.ArgumentParser):
    # Validate language
    lang = args.lang
    if not re.fullmatch(r"(?:[a-z]{2,3}(?:-[A-Z]{2,3})?|all)", lang):
        parser.error(
            f"invalid language: '{lang}' (must be a 2- or 3-letter ISO language code)"
        )

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