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https://github.com/kuhyx/utils.git
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Krzysztof kuhy Rudnicki
6154dc09bf
The three Python packages pinned ruff twice at different versions: requirements.txt at 0.16.7, .pre-commit-config.yaml at v0.15.2. Only the older one ever ran, so `select = ["ALL"]` was enforced two minor versions behind. Measured before aligning: v0.15.2 reports 0 findings, every 0.16.x reports CPY001 on each file -- 70 crdt-sync, 23 freedays, 71 gatelock, and no other rule. Resolved by adding the notice rather than ignoring the rule, so the gate keeps its teeth. Two gatelock modules sat at exactly the 250-line cap, so a one-line header tipped them to 251. Both are split along a real seam rather than shaved: _widget_fills.py colour arithmetic over LockConfig, no tkinter import _surfaces_focus.py selects among existing surfaces, never mutates them The focus split keeps _surfaces.py's documented containment (it stays the only module that creates, moves or destroys windows), and the static guard in test_recovery_invariants.py globs _surfaces*.py, so the new sibling is covered with no list to extend. widgets.py re-exports the fills helpers, which keeps gatelock.widgets the single public surface its tests import. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019kMvSMtsVMB3d2uoZ56pbp
72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
# Copyright (c) 2026 Krzysztof Rudnicki
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"""Local JSON persistence for a ``Log``.
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Mirrors ``crdt_sync_dart``'s ``logToJson``/``FileLogPersistence`` serialization
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so a log written by the Dart side parses here and vice versa. Deliberately
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*non-reactive*: the change-stream/reactive store is a Dart/Flutter-only
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convenience (it exists to drive a live UI). On the Python side, where consumers
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are headless sync ticks, this is plain load and (atomic) save.
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"""
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from __future__ import annotations
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import json
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import os
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from typing import TYPE_CHECKING
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from crdt_sync._record import Record
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if TYPE_CHECKING:
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from pathlib import Path
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from crdt_sync._log import Log
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def dump_log(log: Log) -> str:
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"""Serialize ``log`` to canonical JSON text (id -> record dict)."""
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return json.dumps({rid: record.to_dict() for rid, record in log.items()})
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def load_log(text: str) -> Log:
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"""Parse text produced by :func:`dump_log` back into a ``Log``.
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Raises ``ValueError`` (bad JSON), ``KeyError`` or ``TypeError`` (valid
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JSON, wrong shape) on a corrupt payload -- callers reading from disk go
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through :func:`read_log`, which turns those into an empty log.
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"""
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raw = json.loads(text)
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if not isinstance(raw, dict):
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msg = f"expected a JSON object mapping id -> record, got {type(raw).__name__}"
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raise TypeError(msg)
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return {rid: Record.from_dict(value) for rid, value in raw.items()}
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def read_log(path: Path) -> Log:
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"""Read a ``Log`` from ``path``; empty on a missing or unparsable file.
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A truncated or corrupt file can never raise here: it is treated as "no log
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yet", matching the Dart store's defensive load so a half-written file can't
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brick a consumer.
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"""
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try:
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text = path.read_text(encoding="utf-8")
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except FileNotFoundError:
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return {}
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try:
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return load_log(text)
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except ValueError, KeyError, TypeError:
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return {}
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def write_log(path: Path, log: Log) -> None:
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"""Write ``log`` to ``path`` atomically (temp file then rename).
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Writes to a per-process temp file and ``replace``s it over the real path,
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so a concurrent reader never observes a half-written file. Mirrors the
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Dart ``FileLogPersistence`` write scheme.
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"""
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path.parent.mkdir(parents=True, exist_ok=True)
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tmp = path.with_name(f"{path.name}.{os.getpid()}.tmp")
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tmp.write_text(dump_log(log), encoding="utf-8")
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tmp.replace(path)
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