File size: 2,321 Bytes
c8beaf3 | 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | #!/usr/bin/env python3
"""Download and SHA-256 verify one component from the fixed dependency lock."""
from __future__ import annotations
import argparse
import csv
import hashlib
import urllib.parse
import urllib.request
from pathlib import Path
def rows(path: Path) -> list[dict[str, str]]:
with path.open("r", encoding="utf-8", newline="") as handle:
return list(csv.DictReader(handle, delimiter="\t"))
def download(row: dict[str, str], output: Path) -> None:
output.mkdir(parents=True, exist_ok=True)
target = output / Path(row["repository_path"]).name
partial = target.with_suffix(target.suffix + ".partial")
url = (
f"https://huggingface.co/datasets/{row['source_repo']}/resolve/"
f"{row['source_revision']}/{urllib.parse.quote(row['repository_path'])}?download=true"
)
digest = hashlib.sha256()
size = 0
with urllib.request.urlopen(url) as response, partial.open("wb") as handle:
while True:
chunk = response.read(8 * 1024 * 1024)
if not chunk:
break
handle.write(chunk)
digest.update(chunk)
size += len(chunk)
actual = digest.hexdigest()
if size != int(row["bytes"]) or actual != row["sha256"]:
partial.unlink(missing_ok=True)
raise ValueError(f"dependency mismatch for {row['repository_path']}")
partial.replace(target)
print(f"PASS: {target} ({size:,} bytes; SHA-256 {actual})")
def main() -> int:
root = Path(__file__).resolve().parents[1]
parser = argparse.ArgumentParser()
parser.add_argument("component")
parser.add_argument("--dependencies", type=Path, default=root / "dependencies" / "DEPENDENCIES.tsv")
parser.add_argument("--output", type=Path, default=root / "dependencies" / "downloads")
args = parser.parse_args()
selected = [row for row in rows(args.dependencies) if row["component"] == args.component]
if not selected:
raise SystemExit(f"unknown component: {args.component}")
for row in selected:
download(row, args.output)
if any(row["assembly_method"] != "none" for row in selected):
print("This component has multiple transport parts. Run tools/reassemble_s4.py explicitly.")
return 0
if __name__ == "__main__":
raise SystemExit(main())
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