First commit.

.clang-format

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+---
+BasedOnStyle: Microsoft
+IndentWidth: 4
+
+# 不要给头文件排序
+SortIncludes: false

.clangd

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+CompileFlags:
+  Add: [-Wno-microsoft-goto, -Wno-unused-value] # 忽略某些警告

.gitignore

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+build/

ActiveLanguageProfileNotifySink.cpp

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+// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
+// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
+// PARTICULAR PURPOSE.
+//
+// Copyright (c) Microsoft Corporation. All rights reserved
+
+#include "Private.h"
+#include "Globals.h"
+#include "SampleIME.h"
+#include "CompositionProcessorEngine.h"
+
+BOOL CSampleIME::VerifySampleIMECLSID(_In_ REFCLSID clsid)
+{
+    if (IsEqualCLSID(clsid, Global::SampleIMECLSID))
+    {
+        return TRUE;
+    }
+    return FALSE;
+}
+
+//+---------------------------------------------------------------------------
+//
+// ITfActiveLanguageProfileNotifySink::OnActivated
+//
+// Sink called by the framework when changes activate language profile.
+//----------------------------------------------------------------------------
+
+STDAPI CSampleIME::OnActivated(_In_ REFCLSID clsid, _In_ REFGUID guidProfile, _In_ BOOL isActivated)
+{
+    guidProfile;
+
+    if (FALSE == VerifySampleIMECLSID(clsid))
+    {
+        return S_OK;
+    }
+
+    if (isActivated)
+    {
+        _AddTextProcessorEngine();
+    }
+
+    if (nullptr == _pCompositionProcessorEngine)
+    {
+        return S_OK;
+    }
+
+    if (isActivated)
+    {
+        _pCompositionProcessorEngine->ShowAllLanguageBarIcons();
+
+        _pCompositionProcessorEngine->ConversionModeCompartmentUpdated(_pThreadMgr);
+    }
+    else
+    {
+        _DeleteCandidateList(FALSE, nullptr);
+
+        _pCompositionProcessorEngine->HideAllLanguageBarIcons();
+    }
+
+    return S_OK;
+}
+
+//+---------------------------------------------------------------------------
+//
+// _InitActiveLanguageProfileNotifySink
+//
+// Advise a active language profile notify sink.
+//----------------------------------------------------------------------------
+
+BOOL CSampleIME::_InitActiveLanguageProfileNotifySink()
+{
+    ITfSource *pSource = nullptr;
+    BOOL ret = FALSE;
+
+    if (_pThreadMgr->QueryInterface(IID_ITfSource, (void **)&pSource) != S_OK)
+    {
+        return ret;
+    }
+
+    if (pSource->AdviseSink(IID_ITfActiveLanguageProfileNotifySink, (ITfActiveLanguageProfileNotifySink *)this,
+                            &_activeLanguageProfileNotifySinkCookie) != S_OK)
+    {
+        _activeLanguageProfileNotifySinkCookie = TF_INVALID_COOKIE;
+        goto Exit;
+    }
+
+    ret = TRUE;
+
+Exit:
+    pSource->Release();
+    return ret;
+}
+
+//+---------------------------------------------------------------------------
+//
+// _UninitActiveLanguageProfileNotifySink
+//
+// Unadvise a active language profile notify sink.  Assumes we have advised one already.
+//----------------------------------------------------------------------------
+
+void CSampleIME::_UninitActiveLanguageProfileNotifySink()
+{
+    ITfSource *pSource = nullptr;
+
+    if (_activeLanguageProfileNotifySinkCookie == TF_INVALID_COOKIE)
+    {
+        return; // never Advised
+    }
+
+    if (_pThreadMgr->QueryInterface(IID_ITfSource, (void **)&pSource) == S_OK)
+    {
+        pSource->UnadviseSink(_activeLanguageProfileNotifySinkCookie);
+        pSource->Release();
+    }
+
+    _activeLanguageProfileNotifySinkCookie = TF_INVALID_COOKIE;
+}

BaseDictionaryEngine.cpp

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+// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
+// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
+// PARTICULAR PURPOSE.
+//
+// Copyright (c) Microsoft Corporation. All rights reserved
+
+#include "Private.h"
+#include "BaseDictionaryEngine.h"
+#include "Globals.h"
+
+//+---------------------------------------------------------------------------
+// ctor
+//----------------------------------------------------------------------------
+
+CBaseDictionaryEngine::CBaseDictionaryEngine(LCID locale, _In_ CFile *pDictionaryFile)
+{
+    _locale = locale;
+    _pDictionaryFile = pDictionaryFile;
+}
+
+//+---------------------------------------------------------------------------
+// dtor
+//----------------------------------------------------------------------------
+
+CBaseDictionaryEngine::~CBaseDictionaryEngine()
+{
+}
+
+//+---------------------------------------------------------------------------
+// SortListItemByFindKeyCode
+//----------------------------------------------------------------------------
+
+VOID CBaseDictionaryEngine::SortListItemByFindKeyCode(_Inout_ CSampleImeArray<CCandidateListItem> *pItemList)
+{
+    MergeSortByFindKeyCode(pItemList, 0, pItemList->Count() - 1);
+}
+
+//+---------------------------------------------------------------------------
+// MergeSortByFindKeyCode
+//
+//    Mergesort the array of element in CCandidateListItem::_FindKeyCode
+//
+//----------------------------------------------------------------------------
+
+VOID CBaseDictionaryEngine::MergeSortByFindKeyCode(_Inout_ CSampleImeArray<CCandidateListItem> *pItemList, int leftRange, int rightRange)
+{
+    int candidateCount = CalculateCandidateCount(leftRange, rightRange);
+
+    if (candidateCount > 2)
+    {
+        int mid = leftRange + (candidateCount / 2);
+
+        MergeSortByFindKeyCode(pItemList, leftRange, mid);
+        MergeSortByFindKeyCode(pItemList, mid, rightRange);
+
+        CSampleImeArray<CCandidateListItem> ListItemTemp;
+
+        int leftRangeTemp = 0;
+        int midTemp = 0;
+        for (leftRangeTemp = leftRange, midTemp = mid; leftRangeTemp != mid || midTemp != rightRange;)
+        {
+            CStringRange* psrgLeftTemp = nullptr;
+            CStringRange* psrgMidTemp = nullptr;
+
+            psrgLeftTemp = &pItemList->GetAt(leftRangeTemp)->_FindKeyCode;
+            psrgMidTemp = &pItemList->GetAt(midTemp)->_FindKeyCode;
+
+            CCandidateListItem* pLI = nullptr;
+            pLI = ListItemTemp.Append();
+            if (pLI)
+            {
+                if (leftRangeTemp == mid)
+                {
+                    *pLI = *pItemList->GetAt(midTemp++);
+                }
+                else if (midTemp == rightRange || CStringRange::Compare(_locale, psrgLeftTemp, psrgMidTemp) != CSTR_GREATER_THAN)
+                {
+                    *pLI = *pItemList->GetAt(leftRangeTemp++);
+                }
+                else
+                {
+                    *pLI = *pItemList->GetAt(midTemp++);
+                }
+            }
+        }
+
+        leftRangeTemp = leftRange;
+        for (UINT count = 0; count < ListItemTemp.Count(); count++)
+        {
+            *pItemList->GetAt(leftRangeTemp++) = *ListItemTemp.GetAt(count);
+        }
+    }
+    else if (candidateCount == 2)
+    {
+        CStringRange *psrgLeft = nullptr;
+        CStringRange *psrgLeftNext = nullptr;
+
+        psrgLeft = &pItemList->GetAt(leftRange )->_FindKeyCode;
+        psrgLeftNext = &pItemList->GetAt(leftRange+1)->_FindKeyCode;
+
+        if (CStringRange::Compare(_locale, psrgLeft, psrgLeftNext) == CSTR_GREATER_THAN)
+        {
+            CCandidateListItem ListItem;
+            ListItem = *pItemList->GetAt(leftRange);
+            *pItemList->GetAt(leftRange ) = *pItemList->GetAt(leftRange+1);
+            *pItemList->GetAt(leftRange+1) = ListItem;
+        }
+    }
+}
+
+int CBaseDictionaryEngine::CalculateCandidateCount(int leftRange,  int rightRange)
+{
+    assert(leftRange >= 0);
+    assert(rightRange >= 0);
+
+    return (rightRange - leftRange + 1);
+}

BaseDictionaryEngine.h

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+// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
+// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
+// PARTICULAR PURPOSE.
+//
+// Copyright (c) Microsoft Corporation. All rights reserved
+
+
+#pragma once
+
+#include "File.h"
+#include "SampleIMEBaseStructure.h"
+
+class CBaseDictionaryEngine
+{
+public:
+    CBaseDictionaryEngine(LCID locale, _In_ CFile *pDictionaryFile);
+    virtual ~CBaseDictionaryEngine();
+
+    virtual VOID CollectWord(_In_ CStringRange *psrgKeyCode, _Out_ CSampleImeArray<CStringRange> *pasrgWordString)
+    { 
+        psrgKeyCode; 
+        pasrgWordString = nullptr;
+    }
+
+    virtual VOID CollectWord(_In_ CStringRange *psrgKeyCode, _Out_ CSampleImeArray<CCandidateListItem> *pItemList)
+    { 
+        psrgKeyCode;
+        pItemList = nullptr;
+    }
+
+    virtual VOID SortListItemByFindKeyCode(_Inout_ CSampleImeArray<CCandidateListItem> *pItemList);
+
+protected:
+    CFile* _pDictionaryFile;
+    LCID _locale;
+
+private:
+    VOID MergeSortByFindKeyCode(_Inout_ CSampleImeArray<CCandidateListItem> *pItemList, int leftRange, int rightRange);
+    int CalculateCandidateCount(int leftRange,  int rightRange);
+};