blob: 712b993f2fd37c217938de816c8573bd3ed1a601 [file] [log] [blame]
import argparse
from typing import Iterable
from typing import Iterator
from typing import Optional
from typing import Sequence
from typing import Set
from pre_commit_hooks.util import added_files
from pre_commit_hooks.util import cmd_output
def lower_set(iterable: Iterable[str]) -> Set[str]:
return {x.lower() for x in iterable}
def parents(file: str) -> Iterator[str]:
path_parts = file.split('/')
while path_parts:
yield '/'.join(path_parts)
def directories_for(files: Set[str]) -> Set[str]:
return {parent for file in files for parent in parents(file)}
def find_conflicting_filenames(filenames: Sequence[str]) -> int:
repo_files = set(cmd_output('git', 'ls-files').splitlines())
repo_files |= directories_for(repo_files)
relevant_files = set(filenames) | added_files()
relevant_files |= directories_for(relevant_files)
repo_files -= relevant_files
retv = 0
# new file conflicts with existing file
conflicts = lower_set(repo_files) & lower_set(relevant_files)
# new file conflicts with other new file
lowercase_relevant_files = lower_set(relevant_files)
for filename in set(relevant_files):
if filename.lower() in lowercase_relevant_files:
if conflicts:
conflicting_files = [
x for x in repo_files | relevant_files
if x.lower() in conflicts
for filename in sorted(conflicting_files):
print(f'Case-insensitivity conflict found: {filename}')
retv = 1
return retv
def main(argv: Optional[Sequence[str]] = None) -> int:
parser = argparse.ArgumentParser()
'filenames', nargs='*',
help='Filenames pre-commit believes are changed.',
args = parser.parse_args(argv)
return find_conflicting_filenames(args.filenames)
if __name__ == '__main__':