Adding upstream version 2.2.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

pre_commit/meta_hooks/check_hooks_apply.py

@@ -0,0 +1,39 @@
+import argparse
+from typing import Optional
+from typing import Sequence
+
+import pre_commit.constants as C
+from pre_commit import git
+from pre_commit.clientlib import load_config
+from pre_commit.commands.run import Classifier
+from pre_commit.repository import all_hooks
+from pre_commit.store import Store
+
+
+def check_all_hooks_match_files(config_file: str) -> int:
+    classifier = Classifier(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
+        elif not classifier.filenames_for_hook(hook):
+            print(f'{hook.id} does not apply to this repository')
+            retv = 1
+
+    return retv
+
+
+def main(argv: Optional[Sequence[str]] = 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_all_hooks_match_files(filename)
+    return retv
+
+
+if __name__ == '__main__':
+    exit(main())