pre-commit-hooks/pre_commit_hooks/check_json.py at main · pre-commit/pre-commit-hooks

History

38 lines (30 loc) · 983 Bytes

Raw

from __future__ import annotations

import argparse

import json

from collections.abc import Sequence

from typing import Any

def raise_duplicate_keys(

ordered_pairs: list[tuple[str, Any]],

) -> dict[str, Any]:

d = {}

for key, val in ordered_pairs:

if key in d:

raise ValueError(f'Duplicate key: {key}')

else:

d[key] = val

return d

def main(argv: Sequence[str] | None = None) -> int:

parser = argparse.ArgumentParser()

parser.add_argument('filenames', nargs='*', help='Filenames to check.')

args = parser.parse_args(argv)

retval = 0

for filename in args.filenames:

with open(filename, 'rb') as f:

try:

json.load(f, object_pairs_hook=raise_duplicate_keys)

except ValueError as exc:

print(f'{filename}: Failed to json decode ({exc})')

retval = 1

return retval

if __name__ == '__main__':

raise SystemExit(main())

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Uh oh!

Expand file tree

Search code, repositories, users, issues, pull requests...

Uh oh!

Uh oh!

FilesExpand file tree

check_json.py

Latest commit

History

check_json.py

File metadata and controls

Expand file tree