optimize check_case_conflict.parents
diff --git a/pre_commit_hooks/check_case_conflict.py b/pre_commit_hooks/check_case_conflict.py
index 024c1c3..d7ab860 100644
--- a/pre_commit_hooks/check_case_conflict.py
+++ b/pre_commit_hooks/check_case_conflict.py
@@ -15,10 +15,11 @@
def parents(file: str) -> Iterator[str]:
- file = os.path.dirname(file)
- while file:
- yield file
- file = os.path.dirname(file)
+ path_parts = file.split('/')
+ path_parts.pop()
+ while path_parts:
+ yield '/'.join(path_parts)
+ path_parts.pop()
def directories_for(files: Set[str]) -> Set[str]:
