Add aux code support for pinyin - #283
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August 18, 2026 06:16
- New AuxCode class (auxcode.h/cpp) with table loading and phrase matching - Extended PinyinHelper with loadAuxCode/matchAuxCode interfaces - Added testauxcode unit tests for core matching logic
- Add AuxCodeFilter to PinyinMode enum - Add auxCodeBuffer_ to PinyinState - Add AuxCodeTable and AuxCodeTriggerKey config options - Implement handleAuxCodeFilter for key event handling - Extend updateFilter with aux code filtering logic
- Replace AuxCodeTable config with AuxCodeProfile (file name only)
- Load auxcode tables from pinyin/auxcode/{profile} using StandardPaths
- Follows Fcitx5 convention: all lowercase, no underscores in paths
- Simplify matchAuxCode to delegate directly to AuxCode::matchPhrase - Add prev page handling to exit aux code filter mode - Remove unnecessary #include <string_view> - Fix license header years to 2026
- Remove AuxCode::anyCodeStartsWith (unused in production) - Update tests to use matchPhrase directly - Note: matchPhrase rejects input longer than char count for single chars - Add handleNextPage to handleAuxCodeFilter for consistency with stroke
matchPhrase now checks all codes for single characters, not just the first code. This allows inputs like 'oc' to match '时' which has code 'oc' in the table.
Combine testLoadAndSingleCharMatch and testMultiCode into one testSingleCharMatch that covers single code, multi code, and prefix matching scenarios.
Keep 魔法少女, 人间体, and 多啦A梦 examples. Remove redundant 时间 tests and stroke key char tests (covered by testSingleCharMatch).
- Remove unnecessary loop in single-char path of matchPhrase - Fix type mismatch in reserve() call (int -> size_t) - Add comment explaining why getFirstCode is public
Create AuxCodeConfig struct with Profile and TriggerKey options, replacing the flat auxCodeProfile and auxCodeTriggerKey options. Config format now uses [FilterByAuxCode] section, consistent with [FilterByStroke] naming convention.
- Add UTF-8 validation in loadFromFile, consistent with stroke.cpp - Use stringutils::trimView and utf8::lengthValidated for consistency - Replace code[0] with code.front(), add ASCII assumption comment - Use FCITX_ASSERT/FCITX_INFO instead of raw assert/cout - Add unique temp file paths via getpid() to avoid concurrent conflicts - Add testEmptyContent for file with no valid entries
- Fix doReset missing resetAuxCode call, preventing buffer leak on reset - Use StandardPaths::open + IFDStreamBuf for file loading, avoiding TOCTOU - Cache loaded profile name to avoid redundant file re-reads - Accept profile name instead of file path in loadAuxCode interface - Reuse pre-computed keyChr instead of redundant Key::keySymToUTF8 - Enable InputBufferOption::AsciiOnly for auxCodeBuffer_ - Remove redundant isLoaded check in matchAuxCode - Extract parseStream to eliminate duplication between loadFromFile/loadFromFD
- Add AuxCode::loadProfile() with StandardPaths::open + profile caching - Remove loadedProfile_ from PinyinHelper, now managed by AuxCode - PinyinHelper::loadAuxCode becomes a single-line delegation - Remove unused includes from pinyinhelper.cpp
getFirstCode is only used internally by matchPhrase. Its behavior is already covered by testMatchPhrase.
Remove nested AuxCodeConfig, expose auxCodeProfile and auxCodeTriggerKey as flat options in PinyinEngineConfig. INI changes from [FilterByAuxCode] to flat keys in [PinyinEngineConfig].
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: defaults Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 2 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThis change adds auxiliary-code profile parsing and matching, exposes the behavior through ChangesAuxiliary-code filtering
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to The PR adds opt-in auxiliary-code filtering for pinyin without supplied evidence of an actionable merge-blocking risk; it is merge-ready after normal checks and review. Sequence Diagram(s)sequenceDiagram
participant User
participant PinyinEngine
participant PinyinHelper
participant AuxCode
User->>PinyinEngine: press auxiliary-code trigger
PinyinEngine->>PinyinHelper: loadAuxCode(profile)
PinyinHelper->>AuxCode: loadProfile(profile)
User->>PinyinEngine: enter auxiliary-code letters
PinyinEngine->>PinyinHelper: matchAuxCode(candidate, buffer)
PinyinHelper->>AuxCode: matchPhrase(candidate, buffer)
AuxCode-->>PinyinHelper: match result
PinyinHelper-->>PinyinEngine: match result
PinyinEngine-->>User: update candidates
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@modules/pinyinhelper/auxcode.cpp`:
- Around line 21-31: In the profile-loading function, reset table_ and loaded_
before calling StandardPaths::global().open, so a failed open cannot retain the
previous profile’s state. Keep the existing early return for invalid files and
parsing flow unchanged.
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Run ID: 8c3310fd-375a-42ae-bdb0-7fa88a0f66ed
📒 Files selected for processing (10)
im/pinyin/pinyin.cppim/pinyin/pinyin.hmodules/pinyinhelper/CMakeLists.txtmodules/pinyinhelper/auxcode.cppmodules/pinyinhelper/auxcode.hmodules/pinyinhelper/pinyinhelper.cppmodules/pinyinhelper/pinyinhelper.hmodules/pinyinhelper/pinyinhelper_public.htest/CMakeLists.txttest/testauxcode.cpp
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功能说明
为拼音输入法添加辅助码筛选功能。用户在输入拼音后，可通过触发键进入辅助码模式，输入辅助码来过滤候选词。
目前功能已经可用，但存在一些问题，因此这个 PR 只能作为 Demo。
当前实现
码表加载
~/.local/share/fcitx5/pinyin/auxcode/加载文本格式码表（如flypy_full.txt）触发方式
Tab）Tab）匹配规则
人匹配p或pn人间匹配pm，人间体匹配pmr交互方式
已知问题
与笔画筛选功能重叠（最严重的问题）
一丨丿㇏𠃍）码表格式限制
词组筛选模式单一
其他尝试
我试过实现直接辅码（无需触发键），但存在技术问题未解决，暂不包含在此 PR 中。
好在这并不是常用功能。
相关 Issue
Summary by CodeRabbit
New Features
Tests