yaml_validator.py

#!/usr/bin/env python3
'''
simple yaml file validator, reports any syntax errors.
'''

import sys
import argparse

# pylint: disable=import-error

import yaml


def validate(*filepaths) -> int:
    exit_code = 0

    for filepath in filepaths:
        with open(filepath, 'r', encoding='utf-8') as f:
            sys.stdout.write('{}'.format(filepath))

            try:
                for _ in yaml.safe_load_all(f.read()):
                    pass
            except Exception as e:
                exit_code = 1
                sys.stdout.write(' - error \n\n({})\n\n'.format(e))
            else:
                sys.stdout.write(' - ok\n')

    return exit_code


if __name__ == '__main__':
    parser = argparse.ArgumentParser()

    parser.add_argument(
        'filepaths',
        nargs='+',
        help='''validate one or more yaml files.''',
    )

    args = parser.parse_args()

    sys.exit(validate(*args.filepaths))