joachim99@75: /*
joachim99@75:  * Copyright (c) 2003-2006, Sergey Zorin. All rights reserved.
joachim99@75:  *
joachim99@75:  * This software is distributable under the BSD license. See the terms
joachim99@75:  * of the BSD license in the LICENSE file provided with this software.
joachim99@75:  *
joachim99@75:  */
joachim99@75: #define _CRT_SECURE_NO_DEPRECATE
joachim99@75: 
joachim99@75: #include <assert.h>
joachim99@75: #include <stdio.h>
joachim99@75: #include <tchar.h>
joachim99@75: 
joachim99@75: #include "diff_ext.h"
joachim99@75: #include <map>
joachim99@75: #include <vector>
joachim99@75: 
joachim99@75: 
joachim99@75: #ifdef UNICODE
joachim99@75: 
joachim99@75: static void parseString( const std::wstring& s, size_t& i /*pos*/, std::wstring& r /*result*/ )
joachim99@75: {
joachim99@75:    size_t size = s.size();
joachim99@75:    ++i; // Skip initial '"'
joachim99@75:    for( ; i<size; ++i )
joachim99@75:    {
joachim99@75:       if ( s[i]=='"' )
joachim99@75:       {
joachim99@75:          ++i;
joachim99@75:          break;
joachim99@75:       }
joachim99@75:       else if ( s[i]==L'\\' && i+1<size )
joachim99@75:       {
joachim99@75:          ++i;
joachim99@75:          switch( s[i] ) {
joachim99@75:             case L'n':  r+=L'\n'; break;
joachim99@75:             case L'r':  r+=L'\r'; break;
joachim99@75:             case L'\\': r+=L'\\'; break;
joachim99@75:             case L'"':  r+=L'"';  break;
joachim99@75:             case L't':  r+=L'\t'; break;
joachim99@75:             default:    r+=L'\\'; r+=s[i]; break;
joachim99@75:          }
joachim99@75:       }
joachim99@75:       else
joachim99@75:          r+=s[i];
joachim99@75:    }
joachim99@75: }
joachim99@75: 
joachim99@75: static std::map< std::wstring, std::wstring > s_translationMap;
joachim99@75: static tstring s_translationFileName;
joachim99@75: 
joachim99@75: void readTranslationFile()
joachim99@75: {
joachim99@75:    s_translationMap.clear();
joachim99@75:    FILE* pFile = _tfopen( s_translationFileName.c_str(), TEXT("rb") );
joachim99@75:    if ( pFile )
joachim99@75:    {
joachim99@75:       MESSAGELOG( TEXT( "Reading translations: " ) + s_translationFileName );
joachim99@75:       std::vector<char> buffer;
joachim99@75:       try {
joachim99@75:          if ( fseek(pFile, 0, SEEK_END)==0 )
joachim99@75:          {
joachim99@75:             size_t length = ftell(pFile); // Get the file length
joachim99@75:             buffer.resize(length);
joachim99@75:             fseek(pFile, 0, SEEK_SET );
joachim99@75:             fread(&buffer[0], 1, length, pFile );
joachim99@75:          }
joachim99@75:       } 
joachim99@75:       catch(...) 
joachim99@75:       {
joachim99@75:       }
joachim99@75:       fclose(pFile);
joachim99@75: 
joachim99@75:       if (buffer.size()>0)
joachim99@75:       {
joachim99@75:          size_t bufferSize = buffer.size();
joachim99@75:          int offset = 0;
joachim99@75:          if ( buffer[0]=='\xEF' && buffer[1]=='\xBB' && buffer[2]=='\xBF' )
joachim99@75:          {
joachim99@75:             offset += 3;
joachim99@75:             bufferSize -= 3;
joachim99@75:          }
joachim99@75: 
joachim99@75:          size_t sLength = MultiByteToWideChar(CP_UTF8,0,&buffer[offset], (int)bufferSize, 0, 0 );
joachim99@75:          std::wstring s( sLength, L' ' );         
joachim99@75:          MultiByteToWideChar(CP_UTF8,0,&buffer[offset], (int)bufferSize, &s[0], (int)s.size() );
joachim99@75: 
joachim99@75:          // Now analyse the file and extract translation strings
joachim99@75:          std::wstring msgid;
joachim99@75:          std::wstring msgstr;
joachim99@75:          msgid.reserve( 1000 );
joachim99@75:          msgstr.reserve( 1000 );
joachim99@75:          bool bExpectingId = true;
joachim99@75:          for( size_t i=0; i<sLength; ++i )
joachim99@75:          {
joachim99@75:             wchar_t c = s[i];
joachim99@75:             if( c == L'\n' || c == L'\r' || c==L' ' || c==L'\t' )
joachim99@75:                continue;
joachim99@75:             else if ( s[i]==L'#' ) // Comment
joachim99@75:                while( s[i]!='\n' && s[i]!=L'\r' && i<sLength )
joachim99@75:                   ++i;
joachim99@75:             else if ( s[i]==L'"' )
joachim99@75:             {
joachim99@75:                if ( bExpectingId ) parseString(s,i,msgid);
joachim99@75:                else                parseString(s,i,msgstr);
joachim99@75:             }
joachim99@75:             else if ( sLength-i>5 && wcsncmp( &s[i], L"msgid", 5 )==0 )
joachim99@75:             {
joachim99@75:                if ( !msgid.empty() && !msgstr.empty() )
joachim99@75:                {
joachim99@75:                   s_translationMap[msgid] = msgstr;
joachim99@75:                }
joachim99@75:                bExpectingId = true;
joachim99@75:                msgid.clear();
joachim99@75:                i+=4;
joachim99@75:             }
joachim99@75:             else if ( sLength-i>6 && wcsncmp( &s[i], L"msgstr", 6 )==0 )
joachim99@75:             {
joachim99@75:                bExpectingId = false;
joachim99@75:                msgstr.clear();
joachim99@75:                i+=5;
joachim99@75:             }
joachim99@75:             else
joachim99@75:             {
joachim99@75:                // Unexpected ?
joachim99@75:             }
joachim99@75:          }
joachim99@75:       }
joachim99@75:    }
joachim99@75:    else
joachim99@75:    {
joachim99@75:       ERRORLOG( TEXT( "Reading translations failed: " ) + s_translationFileName );
joachim99@75:    }
joachim99@75: }
joachim99@75: 
joachim99@75: static tstring getTranslation( const tstring& fallback )
joachim99@75: {
joachim99@75:    std::map< std::wstring, std::wstring >::iterator i = s_translationMap.find( fallback );
joachim99@75:    if (i!=s_translationMap.end())
joachim99@75:       return i->second;
joachim99@75:    return fallback;
joachim99@75: }
joachim99@75: #else
joachim99@75: 
joachim99@75: static tstring getTranslation( const tstring& fallback )
joachim99@75: {
joachim99@75:    return fallback;
joachim99@75: }
joachim99@75: 
joachim99@75: #endif
joachim99@75: 
joachim99@75: 
joachim99@75: static void replaceArgs( tstring& s, const tstring& r1, const tstring& r2=TEXT(""), const tstring& r3=TEXT("") )
joachim99@75: {
joachim99@75:    tstring arg1 = TEXT("%1");
joachim99@75:    size_t pos1 = s.find( arg1 );
joachim99@75:    tstring arg2 = TEXT("%2");
joachim99@75:    size_t pos2 = s.find( arg2 );
joachim99@75:    tstring arg3 = TEXT("%3");
joachim99@75:    size_t pos3 = s.find( arg3 );
joachim99@75:    if ( pos1 != size_t(-1) )
joachim99@75:    {
joachim99@75:       s.replace( pos1, arg1.length(), r1 );
joachim99@75:       if ( pos2 != size_t(-1) && pos1<pos2 )
joachim99@75:          pos2 += r1.length() - arg1.length();
joachim99@75:       if ( pos3 != size_t(-1) && pos1<pos3 )
joachim99@75:          pos3 += r1.length() - arg1.length();
joachim99@75:    }
joachim99@75:    if ( pos2 != size_t(-1) )
joachim99@75:    {
joachim99@75:       s.replace( pos2, arg2.length(), r2 );
joachim99@75:       if ( pos3 != size_t(-1) && pos2<pos3 )
joachim99@75:          pos3 += r2.length() - arg2.length();
joachim99@75:    }
joachim99@75:    if ( pos3 != size_t(-1) )
joachim99@75:    {
joachim99@75:       s.replace( pos3, arg3.length(), r3 );
joachim99@75:    }
joachim99@75: }
joachim99@75: 
joachim99@75: DIFF_EXT::DIFF_EXT() 
joachim99@75: : m_nrOfSelectedFiles(0), _ref_count(0L),
joachim99@75:   m_recentFiles( SERVER::instance()->recent_files() )
joachim99@75: {
joachim99@75:    LOG();
joachim99@75:   _resource = SERVER::instance()->handle();
joachim99@75:   
joachim99@75:   SERVER::instance()->lock();
joachim99@75: }
joachim99@75: 
joachim99@75: DIFF_EXT::~DIFF_EXT() 
joachim99@75: {
joachim99@75:    LOG();
joachim99@77:    if(_resource != SERVER::instance()->handle()) {
joachim99@77:       FreeLibrary(_resource);
joachim99@77:    }
joachim99@75:   
joachim99@77:    SERVER::instance()->release();
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP
joachim99@75: DIFF_EXT::QueryInterface(REFIID refiid, void** ppv) 
joachim99@75: {
joachim99@75:   HRESULT ret = E_NOINTERFACE;
joachim99@75:   *ppv = 0;
joachim99@75: 
joachim99@75:   if(IsEqualIID(refiid, IID_IShellExtInit) || IsEqualIID(refiid, IID_IUnknown)) {
joachim99@75:     *ppv = static_cast<IShellExtInit*>(this);
joachim99@75:   } else if (IsEqualIID(refiid, IID_IContextMenu)) {
joachim99@75:     *ppv = static_cast<IContextMenu*>(this);
joachim99@75:   }
joachim99@75: 
joachim99@75:   if(*ppv != 0) {
joachim99@75:     AddRef();
joachim99@75: 
joachim99@75:     ret = NOERROR;
joachim99@75:   }
joachim99@75: 
joachim99@75:   return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP_(ULONG)
joachim99@75: DIFF_EXT::AddRef() 
joachim99@75: {
joachim99@75:   return InterlockedIncrement((LPLONG)&_ref_count);
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP_(ULONG)
joachim99@75: DIFF_EXT::Release() 
joachim99@75: {
joachim99@75:   ULONG ret = 0L;
joachim99@75:   
joachim99@75:   if(InterlockedDecrement((LPLONG)&_ref_count) != 0) {
joachim99@75:     ret = _ref_count;
joachim99@75:   } else {
joachim99@75:     delete this;
joachim99@75:   }
joachim99@75: 
joachim99@75:   return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: 
joachim99@75: 
joachim99@75: STDMETHODIMP
joachim99@75: DIFF_EXT::Initialize(LPCITEMIDLIST /*folder not used*/, IDataObject* data, HKEY /*key not used*/) 
joachim99@75: {
joachim99@75:    LOG();
joachim99@75: 
joachim99@75: #ifdef UNICODE
joachim99@75:    tstring installDir = SERVER::instance()->getRegistryKeyString( TEXT(""), TEXT("InstallDir") );
joachim99@75:    tstring language = SERVER::instance()->getRegistryKeyString( TEXT(""), TEXT("Language") );
joachim99@75:    tstring translationFileName = installDir + TEXT("\\translations\\diff_ext_") + language + TEXT(".po");
joachim99@75:    if ( s_translationFileName != translationFileName )
joachim99@75:    {
joachim99@75:       s_translationFileName = translationFileName;
joachim99@75:       readTranslationFile();
joachim99@75:    }
joachim99@75: #endif
joachim99@75: 
joachim99@75:   FORMATETC format = {CF_HDROP, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
joachim99@75:   STGMEDIUM medium;
joachim99@75:   medium.tymed = TYMED_HGLOBAL;
joachim99@75:   HRESULT ret = E_INVALIDARG;
joachim99@75: 
joachim99@75:   if(data->GetData(&format, &medium) == S_OK) 
joachim99@75:   {
joachim99@75:     HDROP drop = (HDROP)medium.hGlobal;
joachim99@75:     m_nrOfSelectedFiles = DragQueryFile(drop, 0xFFFFFFFF, 0, 0);
joachim99@75: 
joachim99@75:     TCHAR tmp[MAX_PATH];
joachim99@75:     
joachim99@75:     //initialize_language();
joachim99@75:     
joachim99@75:     if (m_nrOfSelectedFiles >= 1 && m_nrOfSelectedFiles <= 3)
joachim99@75:     {
joachim99@75:        DragQueryFile(drop, 0, tmp, MAX_PATH);
joachim99@75:        _file_name1 = tmp;
joachim99@75: 
joachim99@75:        if(m_nrOfSelectedFiles >= 2) 
joachim99@75:        {
joachim99@75:          DragQueryFile(drop, 1, tmp, MAX_PATH);
joachim99@75:          _file_name2 = tmp;
joachim99@75:        }
joachim99@75:        
joachim99@75:        if( m_nrOfSelectedFiles == 3) 
joachim99@75:        {
joachim99@75:          DragQueryFile(drop, 2, tmp, MAX_PATH);
joachim99@75:          _file_name3 = tmp;
joachim99@75:        }
joachim99@75: 
joachim99@75:        ret = S_OK;
joachim99@75:     }
joachim99@75:   }
joachim99@75:   else
joachim99@75:   {
joachim99@75:      SYSERRORLOG(TEXT("GetData"));
joachim99@75:   }
joachim99@75: 
joachim99@75:   return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: static int insertMenuItemHelper( HMENU menu, UINT id, UINT position, const tstring& text, 
joachim99@75:                                  UINT fState = MFS_ENABLED, HMENU hSubMenu=0 )
joachim99@75: {
joachim99@75:    MENUITEMINFO item_info;
joachim99@75:    ZeroMemory(&item_info, sizeof(item_info));
joachim99@75:    item_info.cbSize = sizeof(MENUITEMINFO);
joachim99@75:    item_info.wID = id;
joachim99@75:    if (text.empty())
joachim99@75:    {   // Separator
joachim99@75:        item_info.fMask = MIIM_TYPE;
joachim99@75:        item_info.fType = MFT_SEPARATOR;
joachim99@75:        item_info.dwTypeData = 0;
joachim99@75:    }
joachim99@75:    else
joachim99@75:    {
joachim99@75:       item_info.fMask = MIIM_ID | MIIM_TYPE | MIIM_STATE | (hSubMenu!=0 ? MIIM_SUBMENU : 0);
joachim99@75:       item_info.fType = MFT_STRING;
joachim99@75:       item_info.fState = fState;
joachim99@75:       item_info.dwTypeData = (LPTSTR)text.c_str();
joachim99@75:       item_info.hSubMenu = hSubMenu;
joachim99@75:    }
joachim99@75:    if ( 0 == InsertMenuItem(menu, position, TRUE, &item_info) )
joachim99@75:       SYSERRORLOG(TEXT("InsertMenuItem"));
joachim99@75:    return id;
joachim99@75: }
joachim99@75: 
joachim99@75: 
joachim99@75: STDMETHODIMP
joachim99@75: DIFF_EXT::QueryContextMenu(HMENU menu, UINT position, UINT first_cmd, UINT /*last_cmd not used*/, UINT flags) 
joachim99@75: {
joachim99@75:    LOG();
joachim99@75:    m_id_Diff = UINT(-1);
joachim99@75:    m_id_DiffWith = UINT(-1);
joachim99@75:    m_id_DiffLater = UINT(-1);
joachim99@75:    m_id_MergeWith = UINT(-1);
joachim99@75:    m_id_Merge3 = UINT(-1);
joachim99@75:    m_id_Diff3 = UINT(-1);
joachim99@75:    m_id_DiffWith_Base = UINT(-1);
joachim99@77:    m_id_ClearList = UINT(-1);
joachim99@75:    m_id_About = UINT(-1);
joachim99@75: 
joachim99@75:    HRESULT ret = MAKE_HRESULT(SEVERITY_SUCCESS, FACILITY_NULL, 0);
joachim99@75: 
joachim99@75:    if(!(flags & CMF_DEFAULTONLY)) 
joachim99@75:    {
joachim99@75:    /* Menu structure:
joachim99@75:       KDiff3 -> (1 File selected):  Save 'selection' for later comparison (push onto history stack)
joachim99@75:                                     Compare 'selection' with first file on history stack.
joachim99@75:                                     Compare 'selection' with -> choice from history stack
joachim99@75:                                     Merge 'selection' with first file on history stack.
joachim99@75:                                     Merge 'selection' with last two files on history stack.
joachim99@75:                 (2 Files selected): Compare 's1' with 's2'
joachim99@75:                                     Merge 's1' with 's2' 
joachim99@75:                 (3 Files selected): Compare 's1', 's2' and 's3'
joachim99@75:    */
joachim99@75:       HMENU subMenu = CreateMenu();
joachim99@75: 
joachim99@75:       UINT id = first_cmd;
joachim99@75:       m_id_FirstCmd = first_cmd;
joachim99@75: 
joachim99@75:       insertMenuItemHelper( menu, id++, position++, TEXT("") );  // begin separator
joachim99@75: 
joachim99@75:       tstring menuString;
joachim99@75:       UINT pos2=0;
joachim99@75:       if(m_nrOfSelectedFiles == 1) 
joachim99@75:       {  
joachim99@75:          size_t nrOfRecentFiles = m_recentFiles.size();
joachim99@77:          tstring menuStringCompare = i18n("Compare with %1");
joachim99@77:          tstring menuStringMerge   = i18n("Merge with %1");
joachim99@77:          tstring firstFileName;
joachim99@75:          if( nrOfRecentFiles>=1 )
joachim99@75:          {
joachim99@80:             firstFileName = TEXT("'") + cut_to_length( m_recentFiles.front() ) + TEXT("'");
joachim99@75:          } 
joachim99@77:          replaceArgs( menuStringCompare, firstFileName );
joachim99@77:          replaceArgs( menuStringMerge,   firstFileName );
joachim99@75:          m_id_DiffWith  = insertMenuItemHelper( subMenu, id++, pos2++, menuStringCompare, nrOfRecentFiles >=1 ? MFS_ENABLED : MFS_DISABLED );
joachim99@75:          m_id_MergeWith = insertMenuItemHelper( subMenu, id++, pos2++, menuStringMerge, nrOfRecentFiles >=1 ? MFS_ENABLED : MFS_DISABLED );
joachim99@75: 
joachim99@75:          //if( nrOfRecentFiles>=2 )
joachim99@75:          //{
joachim99@75:          //   tstring firstFileName = cut_to_length( m_recentFiles.front() );        
joachim99@75:          //   tstring secondFileName = cut_to_length( *(++m_recentFiles.begin()) );        
joachim99@75:          //} 
joachim99@75:          m_id_Merge3 = insertMenuItemHelper( subMenu, id++, pos2++, i18n("3-way merge with base"), 
joachim99@75:             nrOfRecentFiles >=2 ? MFS_ENABLED : MFS_DISABLED );
joachim99@75: 
joachim99@77:          menuString = i18n("Save '%1' for later");
joachim99@75:          replaceArgs( menuString, _file_name1 );
joachim99@75:          m_id_DiffLater = insertMenuItemHelper( subMenu, id++, pos2++, menuString );
joachim99@75: 
joachim99@75:          HMENU file_list = CreateMenu();
joachim99@75:          std::list<tstring>::iterator i;
joachim99@75:          m_id_DiffWith_Base = id;
joachim99@75:          int n = 0;
joachim99@75:          for( i = m_recentFiles.begin(); i!=m_recentFiles.end(); ++i )
joachim99@75:          {
joachim99@75:             tstring s = cut_to_length( *i );
joachim99@75:             insertMenuItemHelper( file_list, id++, n, s );
joachim99@75:             ++n;
joachim99@75:          }
joachim99@75: 
joachim99@77:          insertMenuItemHelper( subMenu, id++, pos2++, i18n("Compare with ..."), 
joachim99@75:             nrOfRecentFiles > 0 ? MFS_ENABLED : MFS_DISABLED, file_list );
joachim99@77: 
joachim99@77:          m_id_ClearList = insertMenuItemHelper( subMenu, id++, pos2++, i18n("Clear list"), nrOfRecentFiles >=1 ? MFS_ENABLED : MFS_DISABLED );
joachim99@75:       }
joachim99@75:       else if(m_nrOfSelectedFiles == 2) 
joachim99@75:       {      
joachim99@75:          //= "Diff " + cut_to_length(_file_name1, 20)+" and "+cut_to_length(_file_name2, 20);
joachim99@75:          m_id_Diff = insertMenuItemHelper( subMenu, id++, pos2++, i18n("Compare") );
joachim99@75:       } 
joachim99@75:       else if ( m_nrOfSelectedFiles == 3 ) 
joachim99@75:       {      
joachim99@75:          m_id_Diff3 = insertMenuItemHelper( subMenu, id++, pos2++, i18n("3 way comparison") );
joachim99@75:       } 
joachim99@75:       else 
joachim99@75:       {
joachim99@75:          // More than 3 files selected?
joachim99@75:       }
joachim99@75:       m_id_About = insertMenuItemHelper( subMenu, id++, pos2++, i18n("About Diff-Ext ...") );
joachim99@75: 
joachim99@75:       insertMenuItemHelper( menu, id++, position++, TEXT("KDiff3"), MFS_ENABLED, subMenu );
joachim99@75: 
joachim99@75:       insertMenuItemHelper( menu, id++, position++, TEXT("") );  // final separator      
joachim99@75: 
joachim99@75:       ret = MAKE_HRESULT(SEVERITY_SUCCESS, FACILITY_NULL, id-first_cmd);
joachim99@75:    }
joachim99@75: 
joachim99@75:    return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP
joachim99@75: DIFF_EXT::InvokeCommand(LPCMINVOKECOMMANDINFO ici) 
joachim99@75: {
joachim99@75:    HRESULT ret = NOERROR;
joachim99@75: 
joachim99@75:    _hwnd = ici->hwnd;
joachim99@75: 
joachim99@75:    if(HIWORD(ici->lpVerb) == 0) 
joachim99@75:    {
joachim99@75:       UINT id = m_id_FirstCmd + LOWORD(ici->lpVerb);
joachim99@75:       if(id == m_id_Diff) 
joachim99@75:       {
joachim99@75:          LOG();
joachim99@75:          diff( TEXT("\"") + _file_name1 + TEXT("\" \"") + _file_name2 + TEXT("\"") );
joachim99@75:       } 
joachim99@75:       else if(id == m_id_Diff3) 
joachim99@75:       {
joachim99@75:          LOG();
joachim99@75:          diff( TEXT("\"") + _file_name1 + TEXT("\" \"") + _file_name2 + TEXT("\" \"") + _file_name3 + TEXT("\"") );
joachim99@75:       } 
joachim99@75:       else if(id == m_id_Merge3) 
joachim99@75:       {
joachim99@75:          LOG();
joachim99@75:          std::list< tstring >::iterator iFrom = m_recentFiles.begin();
joachim99@75:          std::list< tstring >::iterator iBase = iFrom;
joachim99@75:          ++iBase;
joachim99@75:          diff( TEXT("-m \"") + *iBase + TEXT("\" \"") + *iFrom + TEXT("\" \"") + _file_name1 + TEXT("\"") );
joachim99@75:       } 
joachim99@75:       else if(id == m_id_DiffWith) 
joachim99@75:       {
joachim99@75:          LOG();
joachim99@75:          diff_with(0, false);
joachim99@75:       } 
joachim99@75:       else if(id == m_id_MergeWith) 
joachim99@75:       {
joachim99@75:          LOG();
joachim99@75:          diff_with(0, true);
joachim99@75:       } 
joachim99@77:       else if(id == m_id_ClearList) 
joachim99@77:       {
joachim99@77:          LOG();
joachim99@77:          m_recentFiles.clear();
joachim99@77:       } 
joachim99@75:       else if(id == m_id_DiffLater) 
joachim99@75:       {
joachim99@75:          MESSAGELOG(TEXT("Diff Later: ")+_file_name1);
joachim99@75:          m_recentFiles.remove( _file_name1 );
joachim99@75:          m_recentFiles.push_front( _file_name1 );
joachim99@75:       } 
joachim99@75:       else if(id >= m_id_DiffWith_Base && id < m_id_DiffWith_Base+m_recentFiles.size()) 
joachim99@75:       {
joachim99@75:          LOG();
joachim99@75:          diff_with(id-m_id_DiffWith_Base, false);
joachim99@75:       } 
joachim99@75:       else if(id == m_id_About) 
joachim99@75:       {
joachim99@75:          LOG();
joachim99@75:          MessageBox( _hwnd, (i18n("Diff-Ext Copyright (c) 2003-2006, Sergey Zorin. All rights reserved.\n")
joachim99@75:             + i18n("This software is distributable under the BSD license.\n")
joachim99@75:             + i18n("Some extensions for KDiff3 by Joachim Eibl.\n")
joachim99@75:             + i18n("Homepage for Diff-Ext: http://diff-ext.sourceforge.net\n")
joachim99@75:             + i18n("Homepage for KDiff3: http://kdiff3.sourceforge.net")).c_str()
joachim99@75:             , i18n("About Diff-Ext for KDiff3").c_str(), MB_OK );
joachim99@75:       } 
joachim99@75:       else 
joachim99@75:       {
joachim99@75:          ret = E_INVALIDARG;
joachim99@75:          TCHAR verb[80];
joachim99@75:          _sntprintf(verb, 79, TEXT("Command id: %d"), LOWORD(ici->lpVerb));
joachim99@75:          verb[79]=0;
joachim99@75:          ERRORLOG(verb);
joachim99@75:       }
joachim99@75:    }
joachim99@80:    else
joachim99@80:    {
joachim99@80:       ret = E_INVALIDARG;
joachim99@80:    }
joachim99@75: 
joachim99@75:    return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP
joachim99@75: DIFF_EXT::GetCommandString(UINT idCmd, UINT uFlags, UINT*, LPSTR pszName, UINT cchMax) 
joachim99@75: {
joachim99@75:    // LOG(); // Gets called very often
joachim99@75:    HRESULT ret = NOERROR;
joachim99@75: 
joachim99@75:    if(uFlags == GCS_HELPTEXT) {
joachim99@75:       tstring helpString;
joachim99@75:       if( idCmd == m_id_Diff ) 
joachim99@75:       {
joachim99@75:          helpString = i18n("Compare selected files");
joachim99@75:       } 
joachim99@75:       else if( idCmd == m_id_DiffWith ) 
joachim99@75:       {
joachim99@75:          if(!m_recentFiles.empty()) 
joachim99@75:          {
joachim99@75:             helpString = i18n("Compare '%1' with '%2'");
joachim99@75:             replaceArgs( helpString, _file_name1, m_recentFiles.front() );
joachim99@75:          }
joachim99@75:       } 
joachim99@75:       else if(idCmd == m_id_DiffLater) 
joachim99@75:       {
joachim99@75:          helpString = i18n("Save '%1' for later operation");
joachim99@75:          replaceArgs( helpString, _file_name1 );
joachim99@75:       } 
joachim99@75:       else if((idCmd >= m_id_DiffWith_Base) && (idCmd < m_id_DiffWith_Base+m_recentFiles.size())) 
joachim99@75:       {
joachim99@75:          if( !m_recentFiles.empty() ) 
joachim99@75:          {
joachim99@75:             unsigned int num = idCmd - m_id_DiffWith_Base;
joachim99@75:             std::list<tstring>::iterator i = m_recentFiles.begin();
joachim99@75:             for(unsigned int j = 0; j < num && i != m_recentFiles.end(); j++)
joachim99@75:                i++;
joachim99@75: 
joachim99@75:             if ( i!=m_recentFiles.end() )
joachim99@75:             {
joachim99@75:                helpString = i18n("Compare '%1' with '%2'");
joachim99@75:                replaceArgs( helpString, _file_name1, *i );
joachim99@75:             }
joachim99@75:          }
joachim99@75:       }
joachim99@75:       lstrcpyn( (LPTSTR)pszName, helpString.c_str(), cchMax );
joachim99@75:    }
joachim99@75: 
joachim99@75:    return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: void
joachim99@75: DIFF_EXT::diff( const tstring& arguments ) 
joachim99@75: {
joachim99@75:    LOG();
joachim99@75:    STARTUPINFO si;
joachim99@75:    PROCESS_INFORMATION pi;
joachim99@75:    bool bError = true;
joachim99@75:    tstring command = SERVER::instance()->getRegistryKeyString( TEXT(""), TEXT("diffcommand") );
joachim99@75:    tstring commandLine = TEXT("\"") + command + TEXT("\" ") + arguments;
joachim99@75:    if ( ! command.empty() )
joachim99@75:    {
joachim99@75:       ZeroMemory(&si, sizeof(si));
joachim99@75:       si.cb = sizeof(si);
joachim99@75:       if (CreateProcess(command.c_str(), (LPTSTR)commandLine.c_str(), 0, 0, FALSE, 0, 0, 0, &si, &pi) == 0) 
joachim99@75:       {
joachim99@75:          SYSERRORLOG(TEXT("CreateProcess") + command);
joachim99@75:       } 
joachim99@75:       else 
joachim99@75:       {
joachim99@75:          bError = false;
joachim99@75:          CloseHandle( pi.hProcess );
joachim99@75:          CloseHandle( pi.hThread );
joachim99@75:       }
joachim99@75:    }
joachim99@75: 
joachim99@75:    if (bError)
joachim99@75:    {
joachim99@75:       tstring message = i18n("Could not start KDiff3. Please rerun KDiff3 installation.");
joachim99@75:       message += TEXT("\n") + i18n("Command") + TEXT(": ") + command;
joachim99@75:       message += TEXT("\n") + i18n("CommandLine") + TEXT(": ") + commandLine;
joachim99@75:       MessageBox(_hwnd, message.c_str(), i18n("Diff-Ext For KDiff3").c_str(), MB_OK);
joachim99@75:    }
joachim99@75: }
joachim99@75: 
joachim99@75: void
joachim99@75: DIFF_EXT::diff_with(unsigned int num, bool bMerge) 
joachim99@75: {
joachim99@75:    LOG();
joachim99@75:    std::list<tstring>::iterator i = m_recentFiles.begin();
joachim99@75:    for(unsigned int j = 0; j < num && i!=m_recentFiles.end(); j++) {
joachim99@75:       i++;
joachim99@75:    }
joachim99@75: 
joachim99@75:    if ( i!=m_recentFiles.end() )
joachim99@75:       _file_name2 = *i;
joachim99@75: 
joachim99@77:    diff( (bMerge ? TEXT("-m \"") : TEXT("\"") ) + _file_name2 + TEXT("\" \"") + _file_name1 + TEXT("\"") );
joachim99@75: }
joachim99@75: 
joachim99@75: 
joachim99@75: tstring
joachim99@75: DIFF_EXT::cut_to_length(const tstring& in, size_t max_len) 
joachim99@75: {
joachim99@75:   tstring ret;  
joachim99@75:   if( in.length() > max_len) 
joachim99@75:   {
joachim99@75:      ret = in.substr(0, (max_len-3)/2);
joachim99@75:      ret += TEXT("...");
joachim99@75:      ret += in.substr( in.length()-(max_len-3)/2 );
joachim99@75:   }
joachim99@75:   else 
joachim99@75:   {
joachim99@75:      ret = in;
joachim99@75:   }
joachim99@75:   
joachim99@75:   return ret;
joachim99@75: }