mirror of
https://github.com/pre-commit/pre-commit-hooks.git
synced 2025-08-14 17:31:28 +08:00
73 lines
2.0 KiB
Python
73 lines
2.0 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 io
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from typing import Any
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from typing import Generator
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from typing import Optional
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from typing import Sequence
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import ruamel.yaml
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yaml = ruamel.yaml.YAML(typ='safe')
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def _exhaust(gen): # type: (Generator[str, None, None]) -> None
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for _ in gen:
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pass
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def _parse_unsafe(*args, **kwargs): # type: (*Any, **Any) -> None
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_exhaust(yaml.parse(*args, **kwargs))
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def _load_all(*args, **kwargs): # type: (*Any, **Any) -> None
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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 main(argv=None): # type: (Optional[Sequence[str]]) -> int
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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='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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with io.open(filename, encoding='UTF-8') as f:
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load_fn(f)
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except ruamel.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(main())
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