Function run

jsonschema/cli.py:234–292

(arguments, stdout=sys.stdout, stderr=sys.stderr, stdin=sys.stdin)

def run(arguments, stdout=sys.stdout, stderr=sys.stderr, stdin=sys.stdin):  # noqa: D103
    outputter = _Outputter.from_arguments(
        arguments=arguments,
        stdout=stdout,
        stderr=stderr,
    )

    try:
        schema = outputter.load(arguments["schema"])
    except _CannotLoadFile:
        return 1

    Validator = arguments["validator"]
    if Validator is None:
        Validator = validator_for(schema)

    try:
        Validator.check_schema(schema)
    except SchemaError as error:
        outputter.validation_error(
            instance_path=arguments["schema"],
            error=error,
        )
        return 1

    if arguments["instances"]:
        load, instances = outputter.load, arguments["instances"]
    else:
        def load(_):
            try:
                return json.load(stdin)
            except JSONDecodeError as error:
                outputter.parsing_error(
                    path="<stdin>", exc_info=sys.exc_info(),
                )
                raise _CannotLoadFile() from error
        instances = ["<stdin>"]

    resolver = _RefResolver(
        base_uri=arguments["base_uri"],
        referrer=schema,
    ) if arguments["base_uri"] is not None else None

    validator = Validator(schema, resolver=resolver)
    exit_code = 0
    for each in instances:
        try:
            instance = load(each)
        except _CannotLoadFile:
            exit_code = 1
        else:
            exit_code |= _validate_instance(
                instance_path=each,
                instance=instance,
                validator=validator,
                outputter=outputter,
            )