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#!/usr/bin/env python3
# Copyright (c) 2017-2026 Juancarlo Añez (apalala@gmail.com)
# SPDX-License-Identifier: BSD-4-Clause
# by [apalala@gmail.com](https://github.com/apalala)
# by Gemini (2026-02-03)
from __future__ import annotations
import subprocess
import sys
from collections.abc import Collection
from datetime import date
from pathlib import Path
from common import get_staged_files
def is_header_missing(path: Path, target: Collection[str]) -> bool:
"""
Check if a file is missing the license header using native string ops.
Works for # (Python/Makefile) and // (JSONC) comments.
"""
try:
with path.open('r', encoding='utf-8', errors='ignore') as f:
# Check the first 1024 bytes for the header
head = f.read(1024)
return any(line not in head for line in target)
except Exception:
return False
def main() -> None:
"""
Main entry point. Exits with 1 if any staged files lack the header.
"""
year = date.today().year
target = {
'Copyright (c)',
f'{year} Juancarlo Añez (apalala@gmail.com)',
'SPDX-License-Identifier: BSD-4-Clause',
}
ignored_suffix = {
'.dot',
'.g4',
'.ico',
'.jpg',
'.lock',
'.md',
'.pdf',
'.png',
'.pyc',
'.txt',
'.zip',
}
ignored_prefix = [
'bootstrap',
]
ignored_paths = [
Path('./.vale/styles/'),
]
staged = get_staged_files()
missing_paths: list[Path] = []
for path in staged:
must_ignore = (
path.suffix in ignored_suffix
or any(path.stem.startswith(p) for p in ignored_prefix)
or any(path.is_relative_to(p) for p in ignored_paths)
)
if must_ignore:
continue
if is_header_missing(path, target):
missing_paths.append(path)
if missing_paths:
print(
"ERROR: Commit aborted. The following files are missing the license header:"
)
for f in missing_paths:
print(f" - {f}")
print(f"\nPlease add:\n{target}")
sys.exit(1)
sys.exit(0)
if __name__ == "__main__":
main()
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