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76 lines
2.6 KiB
Python
76 lines
2.6 KiB
Python
#!/usr/bin/env python3
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"""Fetch and verify the pinned official Anthropic PPTX Skill (no reimplementation)."""
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from __future__ import annotations
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import argparse
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import hashlib
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import json
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import subprocess
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from pathlib import Path
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ROOT = Path(__file__).resolve().parent
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PROTOCOL = json.loads((ROOT / "experiment_protocol.json").read_text(encoding="utf-8"))
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def run(command: list[str], cwd: Path | None = None) -> str:
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result = subprocess.run(command, cwd=cwd, check=True, text=True, capture_output=True)
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return result.stdout.strip()
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def sha256(path: Path) -> str:
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return hashlib.sha256(path.read_bytes()).hexdigest()
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def prepare(destination: Path) -> dict:
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destination = destination.resolve()
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repository = PROTOCOL["runtime"]["official_skill_repository"]
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revision = PROTOCOL["runtime"]["official_skill_revision"]
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if not (destination / ".git").exists():
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destination.parent.mkdir(parents=True, exist_ok=True)
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run(["git", "clone", "--filter=blob:none", "--no-checkout", repository, str(destination)])
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run(["git", "fetch", "origin", revision], cwd=destination)
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run(["git", "checkout", "--detach", revision], cwd=destination)
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head = run(["git", "rev-parse", "HEAD"], cwd=destination)
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if head != revision:
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raise RuntimeError(f"official Skill revision mismatch: {head} != {revision}")
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required = [
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destination / "skills/pptx/SKILL.md",
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destination / "skills/pptx/html2pptx.md",
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destination / "skills/pptx/scripts/html2pptx.js",
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destination / "skills/pptx/scripts/thumbnail.py",
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]
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missing = [str(path) for path in required if not path.is_file()]
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if missing:
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raise RuntimeError("pinned official Skill is missing required files: " + ", ".join(missing))
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return {
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"repository": repository,
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"revision": head,
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"skill_path": str((destination / "skills/pptx").resolve()),
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"required_file_hashes": {
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str(path.relative_to(destination)): sha256(path) for path in required
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},
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}
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def main() -> int:
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument(
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"--destination",
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type=Path,
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default=ROOT / "external" / "anthropics-skills",
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)
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parser.add_argument("--receipt", type=Path)
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args = parser.parse_args()
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receipt = prepare(args.destination)
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if args.receipt:
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args.receipt.parent.mkdir(parents=True, exist_ok=True)
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args.receipt.write_text(json.dumps(receipt, indent=2), encoding="utf-8")
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print(json.dumps(receipt, indent=2))
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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