initial commit

cmake/fetch_pdfium.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+"""Fetch the hash-pinned non-V8 PDFium dependency for Linux or Windows x64."""
+from pathlib import Path
+import argparse
+import hashlib
+import json
+import platform
+import tarfile
+import tempfile
+import urllib.request
+
+root = Path(__file__).resolve().parent.parent
+lock = json.loads((root / 'cmake/pdfium.lock.json').read_text())
+host = {'Linux': 'linux-x64', 'Windows': 'windows-x64'}.get(platform.system())
+parser = argparse.ArgumentParser(description=__doc__)
+parser.add_argument('--platform', choices=['linux-x64', 'windows-x64'], default=host)
+parser.add_argument('--destination', type=Path)
+args = parser.parse_args()
+if args.platform is None or (args.platform == host and platform.machine() not in ('x86_64', 'AMD64')):
+    raise SystemExit('A supported x64 platform is required; specify --platform for a cross-platform download.')
+prefix = 'windowsX64' if args.platform == 'windows-x64' else 'linuxX64'
+destination = args.destination or root / '.deps' / ('pdfium' if args.platform == host else 'pdfium-' + args.platform.split('-')[0])
+with tempfile.TemporaryDirectory(prefix='docview-pdfium-') as temporary:
+    archive = Path(temporary) / 'pdfium.tgz'
+    urllib.request.urlretrieve(lock[prefix + 'Archive'], archive)
+    if hashlib.sha256(archive.read_bytes()).hexdigest() != lock[prefix + 'Sha256']:
+        raise SystemExit('PDFium archive hash mismatch; dependency not installed.')
+    destination.mkdir(parents=True, exist_ok=True)
+    with tarfile.open(archive) as bundle:
+        bundle.extractall(destination, filter='data')
+print(f'Installed pinned PDFium {lock["version"]} in {destination}')