pre-commit/pre_commit/meta_hooks/check_hooks_apply.py

import argparse

import pre_commit.constants as C
from pre_commit import git
from pre_commit.clientlib import load_config
from pre_commit.commands.run import _filter_by_include_exclude
from pre_commit.commands.run import _filter_by_types
from pre_commit.meta_hooks.helpers import make_meta_entry
from pre_commit.repository import all_hooks
from pre_commit.store import Store

HOOK_DICT = {
    'id': 'check-hooks-apply',
    'name': 'Check hooks apply to the repository',
    'files': C.CONFIG_FILE,
    'language': 'system',
    'entry': make_meta_entry(__name__),
}


def check_all_hooks_match_files(config_file):
    files = git.get_all_files()
    retv = 0

    for hook in all_hooks(load_config(config_file), Store()):
        if hook.always_run or hook.language == 'fail':
            continue
        include, exclude = hook.files, hook.exclude
        filtered = _filter_by_include_exclude(files, include, exclude)
        types, exclude_types = hook.types, hook.exclude_types
        filtered = _filter_by_types(filtered, types, exclude_types)
        if not filtered:
            print('{} does not apply to this repository'.format(hook.id))
            retv = 1

    return retv


def main(argv=None):
    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_all_hooks_match_files(filename)
    return retv


if __name__ == '__main__':
    exit(main())