diff options
Diffstat (limited to 'pre_commit_hooks/forbid_new_submodules.py')
-rw-r--r-- | pre_commit_hooks/forbid_new_submodules.py | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/pre_commit_hooks/forbid_new_submodules.py b/pre_commit_hooks/forbid_new_submodules.py new file mode 100644 index 0000000..b806cad --- /dev/null +++ b/pre_commit_hooks/forbid_new_submodules.py @@ -0,0 +1,48 @@ +from __future__ import annotations + +import argparse +import os +from typing import Sequence + +from pre_commit_hooks.util import cmd_output + + +def main(argv: Sequence[str] | None = None) -> int: + parser = argparse.ArgumentParser() + parser.add_argument('filenames', nargs='*') + args = parser.parse_args(argv) + + if ( + 'PRE_COMMIT_FROM_REF' in os.environ and + 'PRE_COMMIT_TO_REF' in os.environ + ): + diff_arg = '...'.join(( + os.environ['PRE_COMMIT_FROM_REF'], + os.environ['PRE_COMMIT_TO_REF'], + )) + else: + diff_arg = '--staged' + added_diff = cmd_output( + 'git', 'diff', '--diff-filter=A', '--raw', diff_arg, '--', + *args.filenames, + ) + retv = 0 + for line in added_diff.splitlines(): + metadata, filename = line.split('\t', 1) + new_mode = metadata.split(' ')[1] + if new_mode == '160000': + print(f'{filename}: new submodule introduced') + retv = 1 + + if retv: + print() + print('This commit introduces new submodules.') + print('Did you unintentionally `git add .`?') + print('To fix: git rm {thesubmodule} # no trailing slash') + print('Also check .gitmodules') + + return retv + + +if __name__ == '__main__': + raise SystemExit(main()) |