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from __future__ import annotations
import argparse
import re
from typing import Sequence
from cfgv import apply_defaults
import pre_commit.constants as C
from pre_commit import git
from pre_commit.clientlib import load_config
from pre_commit.clientlib import MANIFEST_HOOK_DICT
from pre_commit.commands.run import Classifier
def exclude_matches_any(
filenames: Sequence[str],
include: str,
exclude: str,
) -> bool:
if exclude == '^$':
return True
include_re, exclude_re = re.compile(include), re.compile(exclude)
for filename in filenames:
if include_re.search(filename) and exclude_re.search(filename):
return True
return False
def check_useless_excludes(config_file: str) -> int:
config = load_config(config_file)
filenames = git.get_all_files()
classifier = Classifier.from_config(
filenames, config['files'], config['exclude'],
)
retv = 0
exclude = config['exclude']
if not exclude_matches_any(filenames, '', exclude):
print(
f'The global exclude pattern {exclude!r} does not match any files',
)
retv = 1
for repo in config['repos']:
for hook in repo['hooks']:
# the default of manifest hooks is `types: [file]` but we may
# be configuring a symlink hook while there's a broken symlink
hook.setdefault('types', [])
# Not actually a manifest dict, but this more accurately reflects
# the defaults applied during runtime
hook = apply_defaults(hook, MANIFEST_HOOK_DICT)
names = classifier.filenames
types = hook['types']
types_or = hook['types_or']
exclude_types = hook['exclude_types']
names = classifier.by_types(names, types, types_or, exclude_types)
include, exclude = hook['files'], hook['exclude']
if not exclude_matches_any(names, include, exclude):
print(
f'The exclude pattern {exclude!r} for {hook["id"]} does '
f'not match any files',
)
retv = 1
return retv
def main(argv: Sequence[str] | None = None) -> int:
parser = argparse.ArgumentParser()
parser.add_argument('filenames', nargs='*', default=[C.CONFIG_FILE])
args = parser.parse_args(argv)
retv = 0
for filename in args.filenames:
retv |= check_useless_excludes(filename)
return retv
if __name__ == '__main__':
raise SystemExit(main())
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