initial

header-post-commit.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+"""Post-commit: set Commit: SHA on sources touched in HEAD (amends commit once if needed)."""
+from __future__ import annotations
+
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+from header_lib import (
+    REPO_ROOT,
+    files_in_git_commit,
+    git_head_sha,
+    hook_skip_requested,
+    update_header_commit,
+)
+
+
+def main() -> int:
+    if hook_skip_requested():
+        return 0
+
+    sha = git_head_sha()
+    if not sha:
+        return 0
+
+    touched: list[Path] = []
+    for path in files_in_git_commit("HEAD"):
+        text = path.read_text(encoding="utf-8", errors="replace")
+        new_text = update_header_commit(text, path, sha)
+        if new_text != text:
+            path.write_text(new_text, encoding="utf-8", newline="\n")
+            touched.append(path)
+
+    if not touched:
+        return 0
+
+    env = os.environ.copy()
+    env["HEADER_HOOK_SKIP"] = "1"
+    for path in touched:
+        rel = path.relative_to(REPO_ROOT).as_posix()
+        subprocess.check_call(["git", "add", "--", rel], cwd=REPO_ROOT, env=env)
+    subprocess.check_call(
+        ["git", "commit", "--amend", "--no-edit", "--no-verify"],
+        cwd=REPO_ROOT,
+        env=env,
+    )
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())