mirror of
https://github.com/pre-commit/pre-commit-hooks.git
synced 2025-08-15 01:54:44 +08:00
69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
from __future__ import print_function
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import argparse
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import collections
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import sys
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import yaml
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try:
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from yaml.cyaml import CSafeLoader as Loader
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except ImportError: # pragma: no cover (no libyaml-dev / pypy)
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Loader = yaml.SafeLoader
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def _exhaust(gen):
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for _ in gen:
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pass
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def _parse_unsafe(*args, **kwargs):
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_exhaust(yaml.parse(*args, **kwargs))
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def _load_all(*args, **kwargs):
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_exhaust(yaml.load_all(*args, **kwargs))
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Key = collections.namedtuple('Key', ('multi', 'unsafe'))
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LOAD_FNS = {
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Key(multi=False, unsafe=False): yaml.load,
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Key(multi=False, unsafe=True): _parse_unsafe,
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Key(multi=True, unsafe=False): _load_all,
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Key(multi=True, unsafe=True): _parse_unsafe,
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}
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def check_yaml(argv=None):
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parser = argparse.ArgumentParser()
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parser.add_argument(
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'-m', '--multi', '--allow-multiple-documents', action='store_true',
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)
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parser.add_argument(
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'--unsafe', action='store_true',
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help=(
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'Instead of loading the files, simply parse them for syntax. '
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'A syntax-only check enables extensions and unsafe contstructs '
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'which would otherwise be forbidden. Using this option removes '
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'all guarantees of portability to other yaml implementations. '
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'Implies --allow-multiple-documents'
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),
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)
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parser.add_argument('filenames', nargs='*', help='Yaml filenames to check.')
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args = parser.parse_args(argv)
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load_fn = LOAD_FNS[Key(multi=args.multi, unsafe=args.unsafe)]
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retval = 0
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for filename in args.filenames:
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try:
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load_fn(open(filename), Loader=Loader)
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except yaml.YAMLError as exc:
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print(exc)
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retval = 1
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return retval
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if __name__ == '__main__':
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sys.exit(check_yaml())
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