mirror of
https://github.com/pre-commit/pre-commit-hooks.git
synced 2026-04-04 19:26:52 +00:00
92 lines
2.5 KiB
Python
92 lines
2.5 KiB
Python
from __future__ import annotations
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import argparse
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import math
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import os
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import subprocess
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from collections.abc import Sequence
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from fnmatch import fnmatch
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from pre_commit_hooks.util import added_files
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from pre_commit_hooks.util import zsplit
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def filter_lfs_files(filenames: set[str]) -> None: # pragma: no cover (lfs)
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"""Remove files tracked by git-lfs from the set."""
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if not filenames:
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return
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check_attr = subprocess.run(
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('git', 'check-attr', 'filter', '-z', '--stdin'),
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stdout=subprocess.PIPE,
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stderr=subprocess.DEVNULL,
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encoding='utf-8',
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check=True,
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input='\0'.join(filenames),
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)
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stdout = zsplit(check_attr.stdout)
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for i in range(0, len(stdout), 3):
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filename, filter_tag = stdout[i], stdout[i + 2]
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if filter_tag == 'lfs':
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filenames.remove(filename)
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def find_large_added_files(
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filenames: Sequence[str],
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maxkb: int,
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*,
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exclude: list[str] | None = None,
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enforce_all: bool = False,
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) -> int:
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# Find all added files that are also in the list of files pre-commit tells
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# us about
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retv = 0
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exclude = [] if not exclude else exclude
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filenames_filtered = {
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fname for fname in filenames
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if not any(fnmatch(fname, pat) for pat in exclude)
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}
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filter_lfs_files(filenames_filtered)
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if not enforce_all:
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filenames_filtered &= added_files()
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for filename in filenames_filtered:
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kb = math.ceil(os.stat(filename).st_size / 1024)
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if kb > maxkb:
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print(f'{filename} ({kb} KB) exceeds {maxkb} KB.')
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retv = 1
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return retv
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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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'filenames', nargs='*',
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help='Filenames pre-commit believes are changed.',
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)
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parser.add_argument(
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'--enforce-all', action='store_true',
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help='Enforce all files are checked, not just staged files.',
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)
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parser.add_argument(
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'--maxkb', type=int, default=500,
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help='Maximum allowable KB for added files',
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)
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parser.add_argument(
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'--exclude', type=str, default='',
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help='Comma-separated list of glob-style patterns to be excluded',
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)
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args = parser.parse_args(argv)
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return find_large_added_files(
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args.filenames,
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args.maxkb,
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enforce_all=args.enforce_all,
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exclude=args.exclude.split(','),
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)
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if __name__ == '__main__':
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raise SystemExit(main())
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