mirror of
https://github.com/pre-commit/pre-commit-hooks.git
synced 2026-03-30 10:16:54 +00:00
83 lines
2.4 KiB
Python
83 lines
2.4 KiB
Python
from __future__ import annotations
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import argparse
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from typing import Any
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from typing import Generator
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from typing import NamedTuple
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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: 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: Any, **kwargs: Any) -> None:
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_exhaust(yaml.parse(*args, **kwargs))
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def _load_all(*args: Any, **kwargs: Any) -> None:
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_exhaust(yaml.load_all(*args, **kwargs))
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class Key(NamedTuple):
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multi: bool
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unsafe: bool
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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: Sequence[str] | None = None) -> 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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parser.add_argument(
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'--allow_duplicate_keys', '--allow-duplicate-keys', action='store_true',
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help=('In JSON mapping keys should be unique, in YAML they must be unique.'
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'PyYAML never enforced this although the YAML 1.1 specification already required this.'
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'Duplicate keys in mappings are no longer allowed by default.'
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'Use this parameter to allow duplicate keys in yaml files.'
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),
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)
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args = parser.parse_args(argv)
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yaml.allow_duplicate_keys = args.allow_duplicate_keys
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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 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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raise SystemExit(main())
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