| |
| """ |
| Extract all tar archives under train/ and val/ directories. |
| """ |
| from __future__ import annotations |
|
|
| import argparse |
| import tarfile |
| from pathlib import Path |
|
|
|
|
| def iter_archives(root: Path) -> list[Path]: |
| patterns = ("*.tar", "*.tar.gz", "*.tgz") |
| archives: list[Path] = [] |
| for pattern in patterns: |
| archives.extend(root.rglob(pattern)) |
| return sorted(set(archives)) |
|
|
|
|
| def extract_archive(archive: Path, dest: Path, *, dry_run: bool) -> None: |
| if dry_run: |
| print(f"[dry-run] {archive} -> {dest}") |
| return |
| with tarfile.open(archive, "r:*") as tar: |
| tar.extractall(path=dest) |
| print(f"extracted {archive} -> {dest}") |
|
|
|
|
| def delete_archives(archives: list[Path]) -> None: |
| """Delete archives after successful extraction to save space.""" |
| for archive in archives: |
| try: |
| archive.unlink() |
| print(f"deleted {archive}") |
| except FileNotFoundError: |
| continue |
|
|
|
|
| def remove_dot_underscore_files(root: Path) -> None: |
| """Remove macOS resource fork files like ._foo.""" |
| for path in root.rglob("._*"): |
| try: |
| path.unlink() |
| print(f"removed {path}") |
| except FileNotFoundError: |
| continue |
|
|
|
|
| def main() -> int: |
| parser = argparse.ArgumentParser( |
| description="Extract tar archives under train/ and val/ directories." |
| ) |
| parser.add_argument( |
| "--root", |
| type=Path, |
| default=Path("."), |
| help="Project root containing train/ and val/ (default: current directory).", |
| ) |
| parser.add_argument( |
| "--dry-run", |
| action="store_true", |
| help="List archives without extracting.", |
| ) |
| args = parser.parse_args() |
|
|
| root = args.root.resolve() |
| targets = [root / "train", root / "val"] |
| archives: list[Path] = [] |
| for target in targets: |
| if target.is_dir(): |
| archives.extend(iter_archives(target)) |
| else: |
| print(f"skip missing directory: {target}") |
|
|
| if not archives: |
| print("no archives found") |
| return 0 |
|
|
| for archive in archives: |
| extract_archive(archive, archive.parent, dry_run=args.dry_run) |
|
|
| if not args.dry_run: |
| delete_archives(archives) |
| for target in targets: |
| if target.is_dir(): |
| remove_dot_underscore_files(target) |
|
|
| return 0 |
|
|
|
|
| if __name__ == "__main__": |
| raise SystemExit(main()) |
|
|
