File size: 1,151 Bytes
e13a654 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 |
import os, tarfile
from pathlib import Path
def _safe_members(tf, prefix):
if not prefix.endswith('/'):
prefix += '/'
for m in tf.getmembers():
if not m.name.startswith(prefix):
continue
# basic traversal guard
p = Path(m.name)
if any(part == '..' for part in p.parts) or p.is_absolute():
continue
yield m
def ensure_tar_tree(repo_id: str, root: str, *, token: str | None = None, max_workers: int = 4):
os.environ.setdefault('HF_HUB_ENABLE_HF_TRANSFER', '1')
from huggingface_hub import snapshot_download
base = Path(snapshot_download(repo_id=repo_id, repo_type='dataset',
allow_patterns=[f'{root}.tar', 'index.jsonl', 'README.md', 'LICENSE'],
resume_download=True, token=token, max_workers=max_workers))
root_dir = base / root
if root_dir.exists():
return root_dir
tar_path = base / f'{root}.tar'
if not tar_path.exists():
raise FileNotFoundError(f'Expected {tar_path} in snapshot')
with tarfile.open(tar_path, 'r') as tf:
tf.extractall(base, members=_safe_members(tf, root))
return root_dir
|