| |
| """Extract all archives to a temporary tree and compare every source hash.""" |
|
|
| from __future__ import annotations |
|
|
| import argparse |
| import hashlib |
| import shutil |
| import subprocess |
| import tempfile |
| from pathlib import Path |
|
|
|
|
| def sha256(path: Path) -> str: |
| h = hashlib.sha256() |
| with path.open("rb") as f: |
| for block in iter(lambda: f.read(8 * 1024 * 1024), b""): |
| h.update(block) |
| return h.hexdigest() |
|
|
|
|
| def main() -> int: |
| ap = argparse.ArgumentParser() |
| ap.add_argument("--release-root", type=Path, required=True) |
| ap.add_argument("--keep", action="store_true", help="keep the extracted temporary tree") |
| args = ap.parse_args() |
| release = args.release_root.resolve() |
| temp = Path(tempfile.mkdtemp(prefix="carla-mwrs-roundtrip-")) |
| try: |
| for split in ("training", "validation"): |
| (temp / split).mkdir(parents=True, exist_ok=True) |
| for archive in sorted((release / split).glob("*.tar.zst")): |
| subprocess.run(["tar", "--zstd", "-xf", str(archive), "-C", str(temp / split)], check=True) |
| checked = 0 |
| errors = [] |
| with (release / "SOURCE_FILES.sha256").open(encoding="utf-8") as f: |
| for line in f: |
| digest, rel = line.rstrip("\n").split(" ", 1) |
| path = temp / rel |
| if not path.is_file(): |
| errors.append(f"missing {rel}") |
| continue |
| got = sha256(path) |
| checked += 1 |
| if got != digest: |
| errors.append(f"hash mismatch {rel}: {got} != {digest}") |
| print(f"checked {checked} extracted files") |
| if errors: |
| print("FAIL") |
| print("\n".join(errors[:20])) |
| return 1 |
| print("PASS: every archive member round-trips to the recorded source hash") |
| return 0 |
| finally: |
| if args.keep: |
| print(f"kept extracted tree at {temp}") |
| else: |
| shutil.rmtree(temp, ignore_errors=True) |
|
|
|
|
| if __name__ == "__main__": |
| raise SystemExit(main()) |
|
|
