iframe-proxy | Sunbelt Computer Software

38 lines (30 loc) · 983 Bytes

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())

Sunbelt Computer Software