mirror of
https://github.com/pre-commit/pre-commit-hooks.git
synced 2026-05-15 05:30:33 +00:00
38 lines
983 B
Python
38 lines
983 B
Python
from __future__ import annotations
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import argparse
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import json
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from collections.abc import Iterable
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from typing import Any
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def raise_duplicate_keys(
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ordered_pairs: list[tuple[str, Any]],
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) -> dict[str, Any]:
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d = {}
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for key, val in ordered_pairs:
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if key in d:
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raise ValueError(f'Duplicate key: {key}')
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else:
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d[key] = val
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return d
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def main(argv: Iterable[str] | None = None) -> int:
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parser = argparse.ArgumentParser()
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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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retval = 0
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for filename in args.filenames:
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with open(filename, 'rb') as f:
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try:
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json.load(f, object_pairs_hook=raise_duplicate_keys)
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except ValueError as exc:
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print(f'{filename}: Failed to json decode ({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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