| |
| """Copy byte-bearing rows selected by a rows-by-licence TSV from an extracted archive.""" |
|
|
| from __future__ import annotations |
|
|
| import argparse |
| import csv |
| import hashlib |
| import shutil |
| from pathlib import Path |
|
|
|
|
| def sha256_file(path: Path) -> str: |
| digest = hashlib.sha256() |
| with path.open("rb") as handle: |
| for chunk in iter(lambda: handle.read(8 * 1024 * 1024), b""): |
| digest.update(chunk) |
| return digest.hexdigest() |
|
|
|
|
| def main() -> int: |
| parser = argparse.ArgumentParser() |
| parser.add_argument("row_list", type=Path) |
| parser.add_argument("extracted_archive", type=Path) |
| parser.add_argument("output", type=Path) |
| args = parser.parse_args() |
| with args.row_list.open("r", encoding="utf-8", newline="") as handle: |
| rows = list(csv.DictReader(handle, delimiter="\t")) |
| copied = 0 |
| for row in rows: |
| relative = row.get("p5_payload_rel_path", "") |
| if not relative: |
| continue |
| source = (args.extracted_archive / relative).resolve() |
| root = args.extracted_archive.resolve() |
| if root not in source.parents or not source.is_file(): |
| raise ValueError(f"unsafe or missing source path: {relative}") |
| if sha256_file(source) != row["sha256"]: |
| raise ValueError(f"SHA-256 mismatch: {relative}") |
| target = args.output / row["component"] / Path(relative).name |
| target.parent.mkdir(parents=True, exist_ok=True) |
| shutil.copy2(source, target) |
| copied += 1 |
| print(f"PASS: copied {copied:,} verified byte-bearing rows") |
| return 0 |
|
|
|
|
| if __name__ == "__main__": |
| raise SystemExit(main()) |
|
|
