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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748#!/usr/bin/env python3# /// script# requires-python = ">=3.11"# ///"""stamp `/static/<file>?v=<hash>` references in static/index.html with each file's content hash.
cloudflare hands browsers a 4 hour cache lifetime for /static/*.js regardless of theorigin header, so a changed script is invisible until its url changes. index.html isnot edge cached, so a stamped url takes effect within its own 5 minute max-age.
uv run scripts/stamp_static.py rewrite stale stamps uv run scripts/stamp_static.py --check exit 1 if any stamp is stale"""
import hashlibimport reimport sysfrom pathlib import Path
STATIC = Path(__file__).resolve().parent.parent / "static"REF = re.compile(r'(/static/([A-Za-z0-9._\'-]+)\?v=)([0-9a-f]*)')
def digest(name: str) -> str: return hashlib.sha256((STATIC / name).read_bytes()).hexdigest()[:10]
def stamped(html: str) -> str: return REF.sub(lambda m: m.group(1) + digest(m.group(2)), html)
def main() -> int: index = STATIC / "index.html" html = index.read_text() fresh = stamped(html) if fresh == html: return 0 if "--check" in sys.argv[1:]: print("static/index.html has stale ?v= stamps; run: uv run scripts/stamp_static.py", file=sys.stderr) return 1 index.write_text(fresh) print("stamped static/index.html") return 0
if __name__ == "__main__": sys.exit(main())