run-sub-hooks hook added

pre_commit_hooks/run_sub_hooks.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+"""
+Run pre-commit with different config under pre-commit hook.
+
+Initial idea & code:
+https://github.com/pre-commit/pre-commit/issues/731#issuecomment-376945745
+"""
+import argparse
+import os
+import subprocess
+import sys
+from typing import List
+from typing import Optional
+from typing import Sequence
+
+
+def all_files(target):  # type: (str) -> List[str]
+    return sum(
+        (
+            [os.path.join(dirpath, file) for file in filenames]
+            for (dirpath, dirnames, filenames) in os.walk(target)
+        ),
+        [],
+    )
+
+
+def main(args=None):  # type: (Optional[Sequence[str]]) -> int
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        '-t',
+        '--target',
+        dest='target',
+        help='target directory to which pre-commit should be limited',
+    )
+    parser.add_argument(
+        '-c',
+        '--config',
+        dest='config',
+        default='.pre-commit-config.yaml',
+        help='config in relation to target directory',
+    )
+    parser.add_argument('--all-files', action='store_true')
+    options, args = parser.parse_known_args(args)
+
+    def is_default(arg):  # type: (str) -> bool
+        return getattr(options, arg) == parser.get_default(arg)
+
+    if is_default('target') and is_default('config'):
+        parser.error('`target` or `config` has to be specified')
+
+    precommit_cfg = os.path.join(options.target, options.config)
+    cmd = ['pre-commit', 'run', '--config', precommit_cfg, '--files']
+
+    if options.all_files:
+        if options.target == '.':
+            args.insert(0, '--all-files')
+        else:
+            args.extend(all_files(options.target))
+
+    return subprocess.call(cmd + args, stdout=sys.stdout, stderr=sys.stderr)
+
+
+if __name__ == '__main__':
+    exit(main())