mrwnslz
e246a32212
Dieselben verschlüsselten Listen wie der Web-Reader (annotations.py). Die Anker des Webs (Block-Index plus Zeichenposition im Rohtext) werden auf den angezeigten Text umgerechnet (marks.py, blocks.collapse_map), alte XPath-Anker über das Zitat gefunden. Im Reader: v markiert (Cursor je Wort, Anfang/Ende, Farbe oder Notiz), n legt eine Notiz an, b ein Lesezeichen, a öffnet die Liste (springen, Notiz ändern, löschen). Der Server ersetzt die Liste als Ganzes; die TUI legt ihre Änderungen vor dem Schreiben dreiwege je Eintrag-ID auf die aktuelle Liste des Servers, offline bleiben sie vorgemerkt. Geprüft: die echten resolveAnchorRange des Webs lösen 81 TUI-Anker exakt auf (tools/parity/web_anchors.cjs), 34 von 34 echten Web-Markierungen werden angezeigt, der Server-Smoke schreibt und mischt zwei Geräte. 75 Tests. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
52 lines
1.9 KiB
Python
52 lines
1.9 KiB
Python
"""On-disk cache for the (FlatBook, BookLayout) pair a book open computes —
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extraction + row-layout for very large books (tens of thousands of blocks)
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can take several seconds each; reopening the same book at the same terminal
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width should be near-instant instead of paying that cost again every time.
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Not a correctness-critical cache: any miss (new book, different width, edited
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file) just falls back to recomputing from scratch, so a stale/corrupt cache
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entry is handled by overwriting it, never by crashing the reader.
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"""
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from __future__ import annotations
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import hashlib
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import pickle
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from pathlib import Path
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from . import paths
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from .blocks import FlatBook
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from .layout import BookLayout
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_CACHE_VERSION = 3 # 2: blocks carry char_start/char_len; 3: chapter_srcs
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_CACHE_DIR = paths.cache_dir() / "layout_cache"
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def _cache_key(path: Path, width: int) -> str:
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stat = path.stat()
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raw = f"v{_CACHE_VERSION}|{path.resolve()}|{stat.st_size}|{stat.st_mtime_ns}|{width}"
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return hashlib.sha256(raw.encode()).hexdigest()[:32]
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def load(path: Path, width: int) -> tuple[FlatBook, BookLayout] | None:
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cache_file = _CACHE_DIR / f"{_cache_key(path, width)}.pickle"
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if not cache_file.exists():
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return None
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try:
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with cache_file.open("rb") as f:
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book, book_layout = pickle.load(f)
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if not isinstance(book, FlatBook) or not isinstance(book_layout, BookLayout):
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return None
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return book, book_layout
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except Exception:
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return None
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def save(path: Path, width: int, book: FlatBook, book_layout: BookLayout) -> None:
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_CACHE_DIR.mkdir(parents=True, exist_ok=True)
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cache_file = _CACHE_DIR / f"{_cache_key(path, width)}.pickle"
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try:
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with cache_file.open("wb") as f:
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pickle.dump((book, book_layout), f, protocol=pickle.HIGHEST_PROTOCOL)
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except Exception:
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pass # best-effort — a failed cache write shouldn't break reading
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