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# Copyright (c) 2017-2026 Juancarlo Añez (apalala@gmail.com)
# SPDX-License-Identifier: BSD-4-Clause
from __future__ import annotations
import subprocess
import sys
from scripts.git.hooks.common import get_staged_files
def run_black_on_staged() -> bool:
"""
Runs Black only on Python files that are currently staged.
"""
# by Gemini 2026/02/18
staged = get_staged_files()
# Filter for Python files only
py_files = [str(f) for f in staged if f.suffix == '.py']
if not py_files:
print("Black: No staged Python files to check.")
return True
print(f"--- Running Black on {len(py_files)} staged file(s) ---")
# Execute black on the filtered list
cmd = [sys.executable, "-m", "black"] + py_files
try:
subprocess.run(cmd, check=True, capture_output=True, text=True)
print("Black: Staged files formatted successfully.")
return True
except subprocess.CalledProcessError as e:
print(f"Black: Failed to format staged files!\n{e.stderr}")
return False
def pre_commit_pipeline():
# Chain your checks here
checks = [
run_black_on_staged,
# Add your other grammar validation functions here
]
for check in checks:
if not check():
print("Pipeline aborted. Please fix errors before committing.")
sys.exit(1)
if __name__ == "__main__":
pre_commit_pipeline()
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