Files
msime-windows/engine
fanlusky c99fb8d585 fix(engine): 英文调频不再以中文权重为基准,并按输入记英文槽位
混输列表里英文调频把「全表最高权重 + 1000」写成新权重,中文候选也算在内。
在 zai 下选一次 zaire,它的权重就变成 19,196,987,超过「在」,并且对所有能查出它的输入永久生效。

- adjust_english_candidate_ranking 只用英文候选的权重当基准
- 新增 english_slots 表和 english_slot / set_english_slot /
  learn_english_slot_selection / learn_english_slot_bypass:按输入记录首个英文候选在列表中的位置,
  选中时按调频名次前移(可以升到首位),越过它时后退一位,最多到首页末位
- 新增 InputSession::reads_as_pinyin:整串能否读成拼音(允许简拼声母和打到一半的音节)
2026-09-30 22:49:27 +08:00
..

Input engine (engine/)

中文 README · Website

The C++ conversion engine behind Metasequoia IME for Windows: input sessions, candidate lookup, helpcodes, the shared contracts and the voice module.

This directory used to be a submodule of metasequoiaime/MSIME-Engine. It is now a component of this repository, a sibling of server/, ui/, windows/ and installer/. Its upstream commit, and exactly what the Windows specialization removed, are recorded in UPSTREAM.md. Treat it as first-party code: reviewed, formatted and tested like anything else here, no longer merged from upstream.

Directory Purpose
core/, quanpin/, shuangpin/, english/, japanese/ Input sessions and candidate lookup
contracts/ The authoritative IPC wire format, dictionary format, punctuation policy and WebView message schema
helpcode/ Helpcode (形码) tables and generators
local_modes/, providers/, user_dictionary/ Local modes, online candidate sources, the user dictionary
voice/ Recording, WAV encoding, recognition and text cleanup; builds independently
googlepinyinime-rev/, ngram/kenlm/, utfcpp/, voice/third_party/ Vendored third-party code, kept in its upstream formatting and licence

Integration is through <metasequoia/session.h>. See runtime architecture.

Build

The product build does not build this directory on its own: server/CMakeLists.txt pulls it in with add_subdirectory, so CI compiles and exercises the engine through the server and the TSF frontend. After changing something here, run the server's build and tests.

Building it standalone still works and is much faster while working on the engine. Dependencies are CMake 3.25+, a C++17 compiler, Boost, fmt, spdlog and SQLite3.

vcpkg install --triplet x64-windows-static
cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE="$env:VCPKG_INSTALLATION_ROOT/scripts/buildsystems/vcpkg.cmake" -DVCPKG_TARGET_TRIPLET=x64-windows-static
cmake --build build --config Release --parallel
ctest --test-dir build -C Release --output-on-failure --timeout 20

ctest runs every engine target registered in the root CMakeLists.txt: the segmentation, IPC and punctuation contracts, the platform API, data paths, runtime isolation, dictionary state and the per-mode session tests. tests/ additionally holds a separate Windows-only project that is not part of that build — add new tests to the registered targets so they actually run.

Formatting is driven from the repository root by scripts/format.sh, using the .clang-format in this directory (voice/ has its own with a wider column limit). The vendored third-party trees and the generated headers are excluded.

Contract rules

The IPC wire format, opcodes, voice framing and WebView message definitions live in contracts/ and are the single source of truth. Consumers include the same headers; do not restate them on either side. Dictionary naming is defined by contracts/dictionary/format.json, shared with the repository root's scripts/dictionary_product.py.

Data and licensing

The dictionaries are neither stored nor built here. They arrive as a release pinned by tag and digest in product-lock.json and are downloaded at build time; the pipeline that produced them left with the specialization. Per-source licensing is tracked in NOTICE.md — read it before redistributing the built databases.

Recognition goes through a cloud provider; local Whisper inference was removed. The only committed model is voice/assets/models/silero_vad.onnx, loaded solely by the standalone Windows host that is off by default.

Licence

GPL-3.0. Vendored googlepinyinime-rev, ngram/kenlm (LGPL-2.1-or-later), utfcpp and voice/third_party/miniaudio keep their upstream licences.