Src/Merge.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 //    WinMerge:  an interactive diff/merge utility
   3 //    Copyright (C) 1997-2000  Thingamahoochie Software
   4 //    Author: Dean Grimm
   5 //    SPDX-License-Identifier: GPL-2.0-or-later
   6 /////////////////////////////////////////////////////////////////////////////
   7 /**
   8  * @file  Merge.cpp
   9  *
  10  * @brief Defines the class behaviors for the application.
  11  *
  12  */
  13
  14 #include "stdafx.h"
  15 #include "Merge.h"
  16 #include "Constants.h"
  17 #include "UnicodeString.h"
  18 #include "unicoder.h"
  19 #include "Environment.h"
  20 #include "OptionsMgr.h"
  21 #include "OptionsInit.h"
  22 #include "RegOptionsMgr.h"
  23 #include "OpenDoc.h"
  24 #include "OpenFrm.h"
  25 #include "OpenView.h"
  26 #include "HexMergeDoc.h"
  27 #include "HexMergeFrm.h"
  28 #include "HexMergeView.h"
  29 #include "AboutDlg.h"
  30 #include "MainFrm.h"
  31 #include "MergeEditFrm.h"
  32 #include "DirFrame.h"
  33 #include "MergeDoc.h"
  34 #include "DirDoc.h"
  35 #include "DirView.h"
  36 #include "PropBackups.h"
  37 #include "FileOrFolderSelect.h"
  38 #include "paths.h"
  39 #include "FileFilterHelper.h"
  40 #include "LineFiltersList.h"
  41 #include "SubstitutionFiltersList.h"
  42 #include "SyntaxColors.h"
  43 #include "CCrystalTextMarkers.h"
  44 #include "OptionsSyntaxColors.h"
  45 #include "Plugins.h"
  46 #include "ProjectFile.h"
  47 #include "MergeEditSplitterView.h"
  48 #include "LanguageSelect.h"
  49 #include "OptionsDef.h"
  50 #include "MergeCmdLineInfo.h"
  51 #include "ConflictFileParser.h"
  52 #include "JumpList.h"
  53 #include "stringdiffs.h"
  54 #include "TFile.h"
  55 #include "paths.h"
  56 #include "CompareStats.h"
  57 #include "TestMain.h"
  58 #include "charsets.h" // For shutdown cleanup
  59
  60 #ifdef _DEBUG
  61 #define new DEBUG_NEW
  62 #endif
  63
  64 /** @brief Location for command line help to open. */
  65 static const TCHAR CommandLineHelpLocation[] = _T("::/htmlhelp/Command_line.html");
  66
  67 /** @brief Backup file extension. */
  68 static const TCHAR BACKUP_FILE_EXT[] = _T("bak");
  69
  70 /////////////////////////////////////////////////////////////////////////////
  71 // CMergeApp
  72
  73 BEGIN_MESSAGE_MAP(CMergeApp, CWinApp)
  74         //{{AFX_MSG_MAP(CMergeApp)
  75         ON_COMMAND(ID_APP_ABOUT, OnAppAbout)
  76         ON_COMMAND(ID_HELP, OnHelp)
  77         ON_COMMAND_EX_RANGE(ID_FILE_PROJECT_MRU_FIRST, ID_FILE_PROJECT_MRU_LAST, OnOpenRecentFile)
  78         ON_UPDATE_COMMAND_UI(ID_FILE_PROJECT_MRU_FIRST, CWinApp::OnUpdateRecentFileMenu)
  79         ON_COMMAND(ID_FILE_MERGINGMODE, OnMergingMode)
  80         ON_UPDATE_COMMAND_UI(ID_FILE_MERGINGMODE, OnUpdateMergingMode)
  81         ON_UPDATE_COMMAND_UI(ID_STATUS_MERGINGMODE, OnUpdateMergingStatus)
  82         //}}AFX_MSG_MAP
  83         // Standard file based document commands
  84         //ON_COMMAND(ID_FILE_NEW, CWinApp::OnFileNew)
  85         //ON_COMMAND(ID_FILE_OPEN, CWinApp::OnFileOpen)
  86         // Standard print setup command
  87         ON_COMMAND(ID_FILE_PRINT_SETUP, CWinApp::OnFilePrintSetup)
  88 END_MESSAGE_MAP()
  89
  90 /////////////////////////////////////////////////////////////////////////////
  91 // CMergeApp construction
  92
  93 CMergeApp::CMergeApp() :
  94   m_bNeedIdleTimer(false)
  95 , m_pOpenTemplate(nullptr)
  96 , m_pDiffTemplate(nullptr)
  97 , m_pHexMergeTemplate(nullptr)
  98 , m_pDirTemplate(nullptr)
  99 , m_mainThreadScripts(nullptr)
 100 , m_nLastCompareResult(0)
 101 , m_bNonInteractive(false)
 102 , m_pOptions(new CRegOptionsMgr())
 103 , m_pGlobalFileFilter(new FileFilterHelper())
 104 , m_nActiveOperations(0)
 105 , m_pLangDlg(new CLanguageSelect())
 106 , m_bEscShutdown(false)
 107 , m_bExitIfNoDiff(MergeCmdLineInfo::Disabled)
 108 , m_pLineFilters(new LineFiltersList())
 109 , m_pSubstitutionFiltersList(new SubstitutionFiltersList())
 110 , m_pSyntaxColors(new SyntaxColors())
 111 , m_pMarkers(new CCrystalTextMarkers())
 112 , m_bMergingMode(false)
 113 {
 114         // add construction code here,
 115         // Place all significant initialization in InitInstance
 116 }
 117
 118 CMergeApp::~CMergeApp()
 119 {
 120         strdiff::Close();
 121 }
 122 /////////////////////////////////////////////////////////////////////////////
 123 // The one and only CMergeApp object
 124
 125 CMergeApp theApp;
 126
 127 /////////////////////////////////////////////////////////////////////////////
 128 // CMergeApp initialization
 129
 130 /**
 131  * @brief Initialize WinMerge application instance.
 132  * @return TRUE if application initialization succeeds (and we'll run it),
 133  *   FALSE if something failed and we exit the instance.
 134  * @todo We could handle these failure situations more gratefully, i.e. show
 135  *  at least some error message to the user..
 136  */
 137 BOOL CMergeApp::InitInstance()
 138 {
 139         // Prevents DLL hijacking
 140         HMODULE hLibrary = GetModuleHandle(_T("kernel32.dll"));
 141         BOOL (WINAPI *pfnSetSearchPathMode)(DWORD) = (BOOL (WINAPI *)(DWORD))GetProcAddress(hLibrary, "SetSearchPathMode");
 142         if (pfnSetSearchPathMode != nullptr)
 143                 pfnSetSearchPathMode(0x00000001L /*BASE_SEARCH_PATH_ENABLE_SAFE_SEARCHMODE*/ | 0x00008000L /*BASE_SEARCH_PATH_PERMANENT*/);
 144         BOOL (WINAPI *pfnSetDllDirectoryA)(LPCSTR) = (BOOL (WINAPI *)(LPCSTR))GetProcAddress(hLibrary, "SetDllDirectoryA");
 145         if (pfnSetDllDirectoryA != nullptr)
 146                 pfnSetDllDirectoryA("");
 147
 148         JumpList::SetCurrentProcessExplicitAppUserModelID(L"Thingamahoochie.WinMerge");
 149
 150         InitCommonControls();    // initialize common control library
 151         CWinApp::InitInstance(); // call parent class method
 152
 153         m_imageForInitializingGdiplus.Load((IStream*)nullptr); // initialize GDI+
 154
 155         // Runtime switch so programmer may set this in interactive debugger
 156         int dbgmem = 0;
 157         if (dbgmem)
 158         {
 159                 // get current setting
 160                 int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
 161                 // Keep freed memory blocks in the heap's linked list and mark them as freed
 162                 tmpFlag |= _CRTDBG_DELAY_FREE_MEM_DF;
 163                 // Call _CrtCheckMemory at every allocation and deallocation request.
 164                 // WARNING: This slows down WinMerge *A LOT*
 165                 tmpFlag |= _CRTDBG_CHECK_ALWAYS_DF;
 166                 // Set the new state for the flag
 167                 _CrtSetDbgFlag( tmpFlag );
 168         }
 169
 170         // CCrystalEdit Drag and Drop functionality needs AfxOleInit.
 171         if(!AfxOleInit())
 172         {
 173                 TRACE(_T("AfxOleInitFailed. OLE functionality disabled"));
 174         }
 175
 176         // Standard initialization
 177         // If you are not using these features and wish to reduce the size
 178         //  of your final executable, you should remove from the following
 179         //  the specific initialization routines you do not need.
 180
 181         // Revoke the standard OLE Message Filter to avoid drawing frame while loading files.
 182         COleMessageFilter* pOldFilter = AfxOleGetMessageFilter();
 183         pOldFilter->Revoke();
 184
 185         // Load registry keys from WinMerge.reg if existing WinMerge.reg
 186         env::LoadRegistryFromFile(paths::ConcatPath(env::GetProgPath(), _T("WinMerge.reg")));
 187
 188         // Parse command-line arguments.
 189 #ifdef TEST_WINMERGE
 190         MergeCmdLineInfo cmdInfo(_T(""));
 191 #else
 192         MergeCmdLineInfo cmdInfo(GetCommandLine());
 193 #endif
 194         if (cmdInfo.m_bNoPrefs)
 195                 m_pOptions->SetSerializing(false); // Turn off serializing to registry.
 196
 197         Options::CopyHKLMValues();
 198         Options::Init(m_pOptions.get()); // Implementation in OptionsInit.cpp
 199         ApplyCommandLineConfigOptions(cmdInfo);
 200         if (cmdInfo.m_sErrorMessages.size() > 0)
 201         {
 202                 if (AttachConsole(ATTACH_PARENT_PROCESS))
 203                 {
 204                         DWORD dwWritten;
 205                         for (auto& msg : cmdInfo.m_sErrorMessages)
 206                         {
 207                                 String line = _T("WinMerge: ") + msg + _T("\n");
 208                                 WriteConsole(GetStdHandle(STD_OUTPUT_HANDLE), line.c_str(), static_cast<DWORD>(line.length()), &dwWritten, nullptr);
 209                         }
 210                         FreeConsole();
 211                 }
 212         }
 213
 214         // Initialize temp folder
 215         SetupTempPath();
 216
 217         // If paths were given to commandline we consider this being an invoke from
 218         // commandline (from other application, shellextension etc).
 219         bool bCommandLineInvoke = cmdInfo.m_Files.GetSize() > 0;
 220
 221         // WinMerge registry settings are stored under HKEY_CURRENT_USER/Software/Thingamahoochie
 222         // This is the name of the company of the original author (Dean Grimm)
 223         SetRegistryKey(_T("Thingamahoochie"));
 224
 225         int nSingleInstance = cmdInfo.m_nSingleInstance.has_value() ?
 226                 *cmdInfo.m_nSingleInstance : GetOptionsMgr()->GetInt(OPT_SINGLE_INSTANCE);
 227
 228         // Create exclusion mutex name
 229         TCHAR szDesktopName[MAX_PATH] = _T("Win9xDesktop");
 230         DWORD dwLengthNeeded;
 231         GetUserObjectInformation(GetThreadDesktop(GetCurrentThreadId()), UOI_NAME,
 232                 szDesktopName, sizeof(szDesktopName), &dwLengthNeeded);
 233         TCHAR szMutexName[MAX_PATH + 40];
 234         // Combine window class name and desktop name to form a unique mutex name.
 235         // As the window class name is decorated to distinguish between ANSI and
 236         // UNICODE build, so will be the mutex name.
 237         wsprintf(szMutexName, _T("%s-%s"), CMainFrame::szClassName, szDesktopName);
 238         HANDLE hMutex = CreateMutex(nullptr, FALSE, szMutexName);
 239         if (hMutex != nullptr)
 240                 WaitForSingleObject(hMutex, INFINITE);
 241         if (nSingleInstance != 0 && GetLastError() == ERROR_ALREADY_EXISTS)
 242         {
 243                 // Activate previous instance and send commandline to it
 244                 HWND hWnd = FindWindow(CMainFrame::szClassName, nullptr);
 245                 if (hWnd != nullptr)
 246                 {
 247                         if (IsIconic(hWnd))
 248                                 ShowWindow(hWnd, SW_RESTORE);
 249                         SetForegroundWindow(GetLastActivePopup(hWnd));
 250                         LPTSTR cmdLine = GetCommandLine();
 251                         COPYDATASTRUCT data = { 0, (lstrlen(cmdLine) + 1) * sizeof(TCHAR), cmdLine};
 252                         if (::SendMessage(hWnd, WM_COPYDATA, NULL, (LPARAM)&data))
 253                         {
 254                                 ReleaseMutex(hMutex);
 255                                 CloseHandle(hMutex);
 256                                 if (nSingleInstance > 1)
 257                                 {
 258                                         DWORD dwProcessId = 0;
 259                                         GetWindowThreadProcessId(hWnd, &dwProcessId);
 260                                         HANDLE hProcess = OpenProcess(SYNCHRONIZE, FALSE, dwProcessId);
 261                                         if (hProcess)
 262                                                 WaitForSingleObject(hProcess, INFINITE);
 263                                 }
 264                                 return FALSE;
 265                         }
 266                 }
 267         }
 268
 269         LoadStdProfileSettings(GetOptionsMgr()->GetInt(OPT_MRU_MAX));  // Load standard INI file options (including MRU)
 270
 271         InitializeFileFilters();
 272
 273         // Read last used filter from registry
 274         // If filter fails to set, reset to default
 275         const String filterString = m_pOptions->GetString(OPT_FILEFILTER_CURRENT);
 276         bool bFilterSet = m_pGlobalFileFilter->SetFilter(filterString);
 277         if (!bFilterSet)
 278         {
 279                 String filter = m_pGlobalFileFilter->GetFilterNameOrMask();
 280                 m_pOptions->SaveOption(OPT_FILEFILTER_CURRENT, filter);
 281         }
 282
 283         charsets_init();
 284         UpdateCodepageModule();
 285
 286         FileTransform::g_UnpackerMode = static_cast<PLUGIN_MODE>(GetOptionsMgr()->GetInt(OPT_PLUGINS_UNPACKER_MODE));
 287         FileTransform::g_PredifferMode = static_cast<PLUGIN_MODE>(GetOptionsMgr()->GetInt(OPT_PLUGINS_PREDIFFER_MODE));
 288
 289         NONCLIENTMETRICS ncm = { sizeof NONCLIENTMETRICS };
 290         if (SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof NONCLIENTMETRICS, &ncm, 0))
 291         {
 292                 const int lfHeight = -MulDiv(9, CClientDC(CWnd::GetDesktopWindow()).GetDeviceCaps(LOGPIXELSY), 72);
 293                 if (abs(ncm.lfMenuFont.lfHeight) > abs(lfHeight))
 294                         ncm.lfMenuFont.lfHeight = lfHeight;
 295                 if (wcscmp(ncm.lfMenuFont.lfFaceName, L"Meiryo") == 0 || wcscmp(ncm.lfMenuFont.lfFaceName, L"\U000030e1\U000030a4\U000030ea\U000030aa"/* "Meiryo" in Japanese */) == 0)
 296                         wcscpy_s(ncm.lfMenuFont.lfFaceName, L"Meiryo UI");
 297                 m_fontGUI.CreateFontIndirect(&ncm.lfMenuFont);
 298         }
 299
 300         if (m_pSyntaxColors != nullptr)
 301                 Options::SyntaxColors::Init(GetOptionsMgr(), m_pSyntaxColors.get());
 302
 303         if (m_pMarkers != nullptr)
 304                 m_pMarkers->LoadFromRegistry();
 305
 306         CCrystalTextView::SetRenderingModeDefault(static_cast<CCrystalTextView::RENDERING_MODE>(GetOptionsMgr()->GetInt(OPT_RENDERING_MODE)));
 307
 308         if (m_pLineFilters != nullptr)
 309                 m_pLineFilters->Initialize(GetOptionsMgr());
 310
 311         // If there are no filters loaded, and there is filter string in previous
 312         // option string, import old filters to new place.
 313         if (m_pLineFilters->GetCount() == 0)
 314         {
 315                 String oldFilter = theApp.GetProfileString(_T("Settings"), _T("RegExps"));
 316                 if (!oldFilter.empty())
 317                         m_pLineFilters->Import(oldFilter);
 318         }
 319
 320         if (m_pSubstitutionFiltersList != nullptr)
 321                 m_pSubstitutionFiltersList->Initialize(GetOptionsMgr());
 322
 323         // Check if filter folder is set, and create it if not
 324         String pathMyFolders = GetOptionsMgr()->GetString(OPT_FILTER_USERPATH);
 325         if (pathMyFolders.empty())
 326         {
 327                 // No filter path, set it to default and make sure it exists.
 328                 pathMyFolders = GetOptionsMgr()->GetDefault<String>(OPT_FILTER_USERPATH);
 329                 GetOptionsMgr()->SaveOption(OPT_FILTER_USERPATH, pathMyFolders);
 330                 theApp.m_pGlobalFileFilter->SetUserFilterPath(pathMyFolders);
 331         }
 332         if (!paths::CreateIfNeeded(pathMyFolders))
 333         {
 334                 // Failed to create a folder, check it didn't already
 335                 // exist.
 336                 DWORD errCode = GetLastError();
 337                 if (errCode != ERROR_ALREADY_EXISTS)
 338                 {
 339                         // Failed to create a folder for filters, fallback to
 340                         // "My Documents"-folder. It is not worth the trouble to
 341                         // bother user about this or user more clever solutions.
 342                         GetOptionsMgr()->SaveOption(OPT_FILTER_USERPATH, env::GetMyDocuments());
 343                 }
 344         }
 345
 346         strdiff::Init(); // String diff init
 347         strdiff::SetBreakChars(GetOptionsMgr()->GetString(OPT_BREAK_SEPARATORS).c_str());
 348
 349         m_bMergingMode = GetOptionsMgr()->GetBool(OPT_MERGE_MODE);
 350
 351         // Initialize i18n (multiple language) support
 352
 353         m_pLangDlg->InitializeLanguage((WORD)GetOptionsMgr()->GetInt(OPT_SELECTED_LANGUAGE));
 354
 355         m_mainThreadScripts = new CAssureScriptsForThread;
 356
 357         // Register the application's document templates.  Document templates
 358         //  serve as the connection between documents, frame windows and views.
 359
 360         // Open view
 361         m_pOpenTemplate = new CMultiDocTemplate(
 362                 IDR_MAINFRAME,
 363                 RUNTIME_CLASS(COpenDoc),
 364                 RUNTIME_CLASS(COpenFrame), // custom MDI child frame
 365                 RUNTIME_CLASS(COpenView));
 366         AddDocTemplate(m_pOpenTemplate);
 367
 368         // Merge Edit view
 369         m_pDiffTemplate = new CMultiDocTemplate(
 370                 IDR_MERGEDOCTYPE,
 371                 RUNTIME_CLASS(CMergeDoc),
 372                 RUNTIME_CLASS(CMergeEditFrame), // custom MDI child frame
 373                 RUNTIME_CLASS(CMergeEditSplitterView));
 374         AddDocTemplate(m_pDiffTemplate);
 375
 376         // Merge Edit view
 377         m_pHexMergeTemplate = new CMultiDocTemplate(
 378                 IDR_MERGEDOCTYPE,
 379                 RUNTIME_CLASS(CHexMergeDoc),
 380                 RUNTIME_CLASS(CHexMergeFrame), // custom MDI child frame
 381                 RUNTIME_CLASS(CHexMergeView));
 382         AddDocTemplate(m_pHexMergeTemplate);
 383
 384         // Directory view
 385         m_pDirTemplate = new CMultiDocTemplate(
 386                 IDR_DIRDOCTYPE,
 387                 RUNTIME_CLASS(CDirDoc),
 388                 RUNTIME_CLASS(CDirFrame), // custom MDI child frame
 389                 RUNTIME_CLASS(CDirView));
 390         AddDocTemplate(m_pDirTemplate);
 391
 392         // create main MDI Frame window
 393         CMainFrame* pMainFrame = new CMainFrame;
 394         if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
 395         {
 396                 if (hMutex != nullptr)
 397                 {
 398                         ReleaseMutex(hMutex);
 399                         CloseHandle(hMutex);
 400                 }
 401                 return FALSE;
 402         }
 403         m_pMainWnd = pMainFrame;
 404
 405         // Init menus -- hMenuDefault is for MainFrame
 406         pMainFrame->m_hMenuDefault = pMainFrame->NewDefaultMenu();
 407
 408         // Set the menu
 409         // Note : for Windows98 compatibility, use FromHandle and not Attach/Detach
 410         CMenu * pNewMenu = CMenu::FromHandle(pMainFrame->m_hMenuDefault);
 411         pMainFrame->MDISetMenu(pNewMenu, nullptr);
 412
 413         // The main window has been initialized, so activate it.
 414         pMainFrame->ActivateFrame(cmdInfo.m_nCmdShow);
 415
 416         // Since this function actually opens paths for compare it must be
 417         // called after initializing CMainFrame!
 418         bool bContinue = true;
 419         if (!ParseArgsAndDoOpen(cmdInfo, pMainFrame) && bCommandLineInvoke)
 420                 bContinue = false;
 421
 422         if (hMutex != nullptr)
 423                 ReleaseMutex(hMutex);
 424
 425         // If user wants to cancel the compare, close WinMerge
 426         if (!bContinue)
 427         {
 428                 pMainFrame->PostMessage(WM_CLOSE, 0, 0);
 429         }
 430
 431 #ifdef TEST_WINMERGE
 432         WinMergeTest::TestAll();
 433 #endif
 434
 435         return bContinue;
 436 }
 437
 438 static void OpenContributersFile(int&)
 439 {
 440         theApp.OpenFileToExternalEditor(paths::ConcatPath(env::GetProgPath(), ContributorsPath));
 441 }
 442
 443 // App command to run the dialog
 444 void CMergeApp::OnAppAbout()
 445 {
 446         CAboutDlg aboutDlg;
 447         aboutDlg.m_onclick_contributers += Poco::delegate(OpenContributersFile);
 448         aboutDlg.DoModal();
 449         aboutDlg.m_onclick_contributers.clear();
 450 }
 451
 452 /////////////////////////////////////////////////////////////////////////////
 453 // CMergeApp commands
 454
 455 /**
 456  * @brief Called when application is about to exit.
 457  * This functions is called when application is exiting, so this is
 458  * good place to do cleanups.
 459  * @return Application's exit value (returned from WinMain()).
 460  */
 461 int CMergeApp::ExitInstance()
 462 {
 463         charsets_cleanup();
 464
 465         //  Save registry keys if existing WinMerge.reg
 466         env::SaveRegistryToFile(paths::ConcatPath(env::GetProgPath(), _T("WinMerge.reg")), RegDir);
 467
 468         // Remove tempfolder
 469         const String temp = env::GetTemporaryPath();
 470         ClearTempfolder(temp);
 471
 472         // Cleanup left over tempfiles from previous instances.
 473         // Normally this should not need to do anything - but if for some reason
 474         // WinMerge did not delete temp files this makes sure they are removed.
 475         CleanupWMtemp();
 476
 477         delete m_mainThreadScripts;
 478         CWinApp::ExitInstance();
 479         return 0;
 480 }
 481
 482 int CMergeApp::DoMessageBox(LPCTSTR lpszPrompt, UINT nType, UINT nIDPrompt)
 483 {
 484         // This is a convenient point for breakpointing !!!
 485
 486         // Create a handle to store the parent window of the message box.
 487         CWnd* pParentWnd = CWnd::GetActiveWindow();
 488
 489         // Check whether an active window was retrieved successfully.
 490         if (pParentWnd == nullptr)
 491         {
 492                 // Try to retrieve a handle to the last active popup.
 493                 CWnd * mainwnd = GetMainWnd();
 494                 if (mainwnd != nullptr)
 495                         pParentWnd = mainwnd->GetLastActivePopup();
 496         }
 497
 498         // Use our own message box implementation, which adds the
 499         // do not show again checkbox, and implements it on subsequent calls
 500         // (if caller set the style)
 501
 502         if (m_bNonInteractive)
 503         {
 504                 if (AttachConsole(ATTACH_PARENT_PROCESS))
 505                 {
 506                         DWORD dwWritten;
 507                         String line = _T("WinMerge: ") + String(lpszPrompt) + _T("\n");
 508                         WriteConsole(GetStdHandle(STD_OUTPUT_HANDLE), line.c_str(), static_cast<DWORD>(line.length()), &dwWritten, nullptr);
 509                         FreeConsole();
 510                 }
 511                 return IDCANCEL;
 512         }
 513
 514         // Create the message box dialog.
 515         CMessageBoxDialog dlgMessage(pParentWnd, lpszPrompt, _T(""), nType | MB_RIGHT_ALIGN,
 516                 nIDPrompt);
 517
 518         if (m_pMainWnd->IsIconic())
 519                 m_pMainWnd->ShowWindow(SW_RESTORE);
 520
 521         // Display the message box dialog and return the result.
 522         return static_cast<int>(dlgMessage.DoModal());
 523 }
 524
 525 bool CMergeApp::IsReallyIdle() const
 526 {
 527         bool idle = true;
 528         POSITION pos = m_pDirTemplate->GetFirstDocPosition();
 529         while (pos != nullptr)
 530         {
 531                 CDirDoc *pDirDoc = static_cast<CDirDoc *>(m_pDirTemplate->GetNextDoc(pos));
 532                 if (const CompareStats *pCompareStats = pDirDoc->GetCompareStats())
 533                 {
 534                         if (!pCompareStats->IsCompareDone() || pDirDoc->GetGeneratingReport())
 535                                 idle = false;
 536                 }
 537         }
 538     return idle;
 539 }
 540
 541 BOOL CMergeApp::OnIdle(LONG lCount)
 542 {
 543         if (CWinApp::OnIdle(lCount))
 544                 return TRUE;
 545
 546         // If anyone has requested notification when next idle occurs, send it
 547         if (m_bNeedIdleTimer)
 548         {
 549                 m_bNeedIdleTimer = false;
 550                 m_pMainWnd->SendMessageToDescendants(WM_TIMER, IDLE_TIMER, lCount, TRUE, FALSE);
 551         }
 552
 553         if (m_bNonInteractive && IsReallyIdle())
 554                 m_pMainWnd->PostMessage(WM_CLOSE, 0, 0);
 555
 556         static_cast<CRegOptionsMgr *>(GetOptionsMgr())->CloseKeys();
 557
 558         return FALSE;
 559 }
 560
 561 /**
 562  * @brief Load any known file filters.
 563  *
 564  * This function loads filter files from paths we know contain them.
 565  * @note User's filter location may not be set yet.
 566  */
 567 void CMergeApp::InitializeFileFilters()
 568 {
 569         String filterPath = GetOptionsMgr()->GetString(OPT_FILTER_USERPATH);
 570
 571         if (!filterPath.empty())
 572         {
 573                 m_pGlobalFileFilter->SetUserFilterPath(filterPath);
 574         }
 575         m_pGlobalFileFilter->LoadAllFileFilters();
 576 }
 577
 578 void CMergeApp::ApplyCommandLineConfigOptions(MergeCmdLineInfo& cmdInfo)
 579 {
 580         if (cmdInfo.m_bNoPrefs)
 581                 m_pOptions->SetSerializing(false); // Turn off serializing to registry.
 582
 583         for (const auto& it : cmdInfo.m_Options)
 584         {
 585                 if (m_pOptions->Set(it.first, it.second) == COption::OPT_NOTFOUND)
 586                 {
 587                         String longname = m_pOptions->ExpandShortName(it.first);
 588                         if (!longname.empty())
 589                         {
 590                                 m_pOptions->Set(longname, it.second);
 591                         }
 592                         else
 593                         {
 594                                 cmdInfo.m_sErrorMessages.push_back(strutils::format_string1(_T("Invalid key '%1' specified in /config option"), it.first));
 595                         }
 596                 }
 597         }
 598 }
 599
 600 /** @brief Read command line arguments and open files for comparison.
 601  *
 602  * The name of the function is a legacy code from the time that this function
 603  * actually parsed the command line. Today the parsing is done using the
 604  * MergeCmdLineInfo class.
 605  * @param [in] cmdInfo Commandline parameters info.
 606  * @param [in] pMainFrame Pointer to application main frame.
 607  * @return `true` if we opened the compare, `false` if the compare was canceled.
 608  */
 609 bool CMergeApp::ParseArgsAndDoOpen(MergeCmdLineInfo& cmdInfo, CMainFrame* pMainFrame)
 610 {
 611         bool bCompared = false;
 612         String strDesc[3];
 613         std::unique_ptr<PackingInfo> infoUnpacker;
 614
 615         m_bNonInteractive = cmdInfo.m_bNonInteractive;
 616
 617         if (!cmdInfo.m_sUnpacker.empty())
 618         {
 619                 infoUnpacker.reset(new PackingInfo(PLUGIN_MODE::PLUGIN_MANUAL));
 620                 infoUnpacker->m_PluginName = cmdInfo.m_sUnpacker;
 621         }
 622
 623         // Set the global file filter.
 624         if (!cmdInfo.m_sFileFilter.empty())
 625         {
 626                 m_pGlobalFileFilter->SetFilter(cmdInfo.m_sFileFilter);
 627         }
 628
 629         // Set codepage.
 630         if (cmdInfo.m_nCodepage)
 631         {
 632                 UpdateDefaultCodepage(2,cmdInfo.m_nCodepage);
 633         }
 634
 635         // Set compare method
 636         if (cmdInfo.m_nCompMethod.has_value())
 637                 GetOptionsMgr()->Set(OPT_CMP_METHOD, *cmdInfo.m_nCompMethod);
 638
 639         // Unless the user has requested to see WinMerge's usage open files for
 640         // comparison.
 641         if (cmdInfo.m_bShowUsage)
 642         {
 643                 ShowHelp(CommandLineHelpLocation);
 644         }
 645         else
 646         {
 647                 // Set the required information we need from the command line:
 648
 649                 m_bExitIfNoDiff = cmdInfo.m_bExitIfNoDiff;
 650                 m_bEscShutdown = cmdInfo.m_bEscShutdown;
 651
 652                 m_strSaveAsPath = cmdInfo.m_sOutputpath;
 653
 654                 strDesc[0] = cmdInfo.m_sLeftDesc;
 655                 if (cmdInfo.m_Files.GetSize() < 3)
 656                 {
 657                         strDesc[1] = cmdInfo.m_sRightDesc;
 658                 }
 659                 else
 660                 {
 661                         strDesc[1] = cmdInfo.m_sMiddleDesc;
 662                         strDesc[2] = cmdInfo.m_sRightDesc;
 663                 }
 664
 665                 if (cmdInfo.m_Files.GetSize() > 2)
 666                 {
 667                         cmdInfo.m_dwLeftFlags |= FFILEOPEN_CMDLINE;
 668                         cmdInfo.m_dwMiddleFlags |= FFILEOPEN_CMDLINE;
 669                         cmdInfo.m_dwRightFlags |= FFILEOPEN_CMDLINE;
 670                         DWORD dwFlags[3] = {cmdInfo.m_dwLeftFlags, cmdInfo.m_dwMiddleFlags, cmdInfo.m_dwRightFlags};
 671                         bCompared = pMainFrame->DoFileOpen(&cmdInfo.m_Files,
 672                                 dwFlags, strDesc, cmdInfo.m_sReportFile, cmdInfo.m_bRecurse, nullptr,
 673                                 cmdInfo.m_sPreDiffer, infoUnpacker.get());
 674                 }
 675                 else if (cmdInfo.m_Files.GetSize() > 1)
 676                 {
 677                         DWORD dwFlags[3] = {cmdInfo.m_dwLeftFlags, cmdInfo.m_dwRightFlags, FFILEOPEN_NONE};
 678                         bCompared = pMainFrame->DoFileOpen(&cmdInfo.m_Files,
 679                                 dwFlags, strDesc, cmdInfo.m_sReportFile, cmdInfo.m_bRecurse, nullptr,
 680                                 cmdInfo.m_sPreDiffer, infoUnpacker.get());
 681                 }
 682                 else if (cmdInfo.m_Files.GetSize() == 1)
 683                 {
 684                         String sFilepath = cmdInfo.m_Files[0];
 685                         if (IsProjectFile(sFilepath))
 686                         {
 687                                 bCompared = LoadAndOpenProjectFile(sFilepath);
 688                         }
 689                         else if (IsConflictFile(sFilepath))
 690                         {
 691                                 //For a conflict file, load the descriptions in their respective positions:  (they will be reordered as needed)
 692                                 strDesc[0] = cmdInfo.m_sLeftDesc;
 693                                 strDesc[1] = cmdInfo.m_sMiddleDesc;
 694                                 strDesc[2] = cmdInfo.m_sRightDesc;
 695                                 bCompared = pMainFrame->DoOpenConflict(sFilepath, strDesc);
 696                         }
 697                         else
 698                         {
 699                                 DWORD dwFlags[3] = {cmdInfo.m_dwLeftFlags, cmdInfo.m_dwRightFlags, FFILEOPEN_NONE};
 700                                 bCompared = pMainFrame->DoFileOpen(&cmdInfo.m_Files,
 701                                         dwFlags, strDesc, cmdInfo.m_sReportFile, cmdInfo.m_bRecurse, nullptr,
 702                                         cmdInfo.m_sPreDiffer, infoUnpacker.get());
 703                         }
 704                 }
 705                 else if (cmdInfo.m_Files.GetSize() == 0) // if there are no input args, we can check the display file dialog flag
 706                 {
 707                         bool showFiles = m_pOptions->GetBool(OPT_SHOW_SELECT_FILES_AT_STARTUP);
 708                         if (showFiles)
 709                                 pMainFrame->DoFileOpen();
 710                 }
 711         }
 712         return bCompared;
 713 }
 714
 715 void CMergeApp::UpdateDefaultCodepage(int cpDefaultMode, int cpCustomCodepage)
 716 {
 717         int wLangId;
 718
 719         switch (cpDefaultMode)
 720         {
 721                 case 0:
 722                         ucr::setDefaultCodepage(GetACP());
 723                         break;
 724                 case 1:
 725                         TCHAR buff[32];
 726                         wLangId = GetLangId();
 727                         if (GetLocaleInfo(wLangId, LOCALE_IDEFAULTANSICODEPAGE, buff, sizeof(buff)/sizeof(buff[0])))
 728                                 ucr::setDefaultCodepage(_ttol(buff));
 729                         else
 730                                 ucr::setDefaultCodepage(GetACP());
 731                         break;
 732                 case 2:
 733                         ucr::setDefaultCodepage(cpCustomCodepage);
 734                         break;
 735                 default:
 736                         // no other valid option
 737                         assert (false);
 738                         ucr::setDefaultCodepage(GetACP());
 739         }
 740 }
 741
 742 /**
 743  * @brief Send current option settings into codepage module
 744  */
 745 void CMergeApp::UpdateCodepageModule()
 746 {
 747         // Get current codepage settings from the options module
 748         // and push them into the codepage module
 749         UpdateDefaultCodepage(GetOptionsMgr()->GetInt(OPT_CP_DEFAULT_MODE), GetOptionsMgr()->GetInt(OPT_CP_DEFAULT_CUSTOM));
 750 }
 751
 752 /** @brief Open help from mainframe when user presses F1*/
 753 void CMergeApp::OnHelp()
 754 {
 755         ShowHelp();
 756 }
 757
 758 /**
 759  * @brief Open given file to external editor specified in options.
 760  * @param [in] file Full path to file to open.
 761  *
 762  * Opens file to defined (in Options/system), Notepad by default,
 763  * external editor. Path is decorated with quotation marks if needed
 764  * (contains spaces). Also '$file' in editor path is replaced by
 765  * filename to open.
 766  * @param [in] file Full path to file to open.
 767  * @param [in] nLineNumber Line number to go to.
 768  */
 769 void CMergeApp::OpenFileToExternalEditor(const String& file, int nLineNumber/* = 1*/)
 770 {
 771         String sCmd = GetOptionsMgr()->GetString(OPT_EXT_EDITOR_CMD);
 772         String sFile(file);
 773         strutils::replace(sCmd, _T("$linenum"), strutils::to_str(nLineNumber));
 774
 775         size_t nIndex = sCmd.find(_T("$file"));
 776         if (nIndex != String::npos)
 777         {
 778                 sFile.insert(0, _T("\""));
 779                 strutils::replace(sCmd, _T("$file"), sFile);
 780                 nIndex = sCmd.find(' ', nIndex + sFile.length());
 781                 if (nIndex != String::npos)
 782                         sCmd.insert(nIndex, _T("\""));
 783                 else
 784                         sCmd += '"';
 785         }
 786         else
 787         {
 788                 sCmd += _T(" \"");
 789                 sCmd += sFile;
 790                 sCmd += _T("\"");
 791         }
 792
 793         bool retVal = false;
 794         STARTUPINFO stInfo = { sizeof STARTUPINFO };
 795         PROCESS_INFORMATION processInfo;
 796
 797         retVal = !!CreateProcess(nullptr, (LPTSTR)sCmd.c_str(),
 798                 nullptr, nullptr, FALSE, CREATE_DEFAULT_ERROR_MODE, nullptr, nullptr,
 799                 &stInfo, &processInfo);
 800
 801         if (!retVal)
 802         {
 803                 // Error invoking external editor
 804                 String msg = strutils::format_string1(_("Failed to execute external editor: %1"), sCmd);
 805                 AfxMessageBox(msg.c_str(), MB_ICONSTOP);
 806         }
 807         else
 808         {
 809                 CloseHandle(processInfo.hThread);
 810                 CloseHandle(processInfo.hProcess);
 811         }
 812 }
 813
 814 /**
 815  * @brief Open file, if it exists, else open url
 816  */
 817 void CMergeApp::OpenFileOrUrl(LPCTSTR szFile, LPCTSTR szUrl)
 818 {
 819         if (paths::DoesPathExist(szFile) == paths::IS_EXISTING_FILE)
 820                 ShellExecute(nullptr, _T("open"), _T("notepad.exe"), szFile, nullptr, SW_SHOWNORMAL);
 821         else
 822                 ShellExecute(nullptr, _T("open"), szUrl, nullptr, nullptr, SW_SHOWNORMAL);
 823 }
 824
 825 /**
 826  * @brief Show Help - this is for opening help from outside mainframe.
 827  * @param [in] helpLocation Location inside help, if `nullptr` main help is opened.
 828  */
 829 void CMergeApp::ShowHelp(LPCTSTR helpLocation /*= nullptr*/)
 830 {
 831         String name, ext;
 832         LANGID LangId = GetLangId();
 833         paths::SplitFilename(m_pLangDlg->GetFileName(LangId), nullptr, &name, &ext);
 834         String sPath = paths::ConcatPath(env::GetProgPath(), strutils::format(DocsPath, name.c_str()));
 835         if (paths::DoesPathExist(sPath) != paths::IS_EXISTING_FILE)
 836                 sPath = paths::ConcatPath(env::GetProgPath(), strutils::format(DocsPath, _T("")));
 837         if (helpLocation == nullptr)
 838         {
 839                 if (paths::DoesPathExist(sPath) == paths::IS_EXISTING_FILE)
 840                         ::HtmlHelp(nullptr, sPath.c_str(), HH_DISPLAY_TOC, NULL);
 841                 else
 842                         ShellExecute(nullptr, _T("open"), DocsURL, nullptr, nullptr, SW_SHOWNORMAL);
 843         }
 844         else
 845         {
 846                 if (paths::DoesPathExist(sPath) == paths::IS_EXISTING_FILE)
 847                 {
 848                         sPath += helpLocation;
 849                         ::HtmlHelp(nullptr, sPath.c_str(), HH_DISPLAY_TOPIC, NULL);
 850                 }
 851         }
 852 }
 853
 854 /**
 855  * @brief Creates backup before file is saved or copied over.
 856  * This function handles formatting correct path and filename for
 857  * backup file. Formatting is done based on several options available
 858  * for users in Options/Backups dialog. After path is formatted, file
 859  * is simply just copied. Not much error checking, just if copying
 860  * succeeded or failed.
 861  * @param [in] bFolder Are we creating backup in folder compare?
 862  * @param [in] pszPath Full path to file to backup.
 863  * @return `true` if backup succeeds, or isn't just done.
 864  */
 865 bool CMergeApp::CreateBackup(bool bFolder, const String& pszPath)
 866 {
 867         // If user doesn't want to backups in folder compare, return
 868         // success so operations don't abort.
 869         if (bFolder && !(GetOptionsMgr()->GetBool(OPT_BACKUP_FOLDERCMP)))
 870                 return true;
 871         // Likewise if user doesn't want backups in file compare
 872         else if (!bFolder && !(GetOptionsMgr()->GetBool(OPT_BACKUP_FILECMP)))
 873                 return true;
 874
 875         // create backup copy of file if destination file exists
 876         if (paths::DoesPathExist(pszPath) == paths::IS_EXISTING_FILE)
 877         {
 878                 String bakPath;
 879                 String path;
 880                 String filename;
 881                 String ext;
 882
 883                 paths::SplitFilename(paths::GetLongPath(pszPath), &path, &filename, &ext);
 884
 885                 // Determine backup folder
 886                 if (GetOptionsMgr()->GetInt(OPT_BACKUP_LOCATION) ==
 887                         PropBackups::FOLDER_ORIGINAL)
 888                 {
 889                         // Put backups to same folder than original file
 890                         bakPath = path;
 891                 }
 892                 else if (GetOptionsMgr()->GetInt(OPT_BACKUP_LOCATION) ==
 893                         PropBackups::FOLDER_GLOBAL)
 894                 {
 895                         // Put backups to global folder defined in options
 896                         bakPath = GetOptionsMgr()->GetString(OPT_BACKUP_GLOBALFOLDER);
 897                         if (bakPath.empty())
 898                                 bakPath = path;
 899                         else
 900                                 bakPath = paths::GetLongPath(bakPath);
 901                 }
 902                 else
 903                 {
 904                         _RPTF0(_CRT_ERROR, "Unknown backup location!");
 905                 }
 906
 907                 bool success = false;
 908                 if (GetOptionsMgr()->GetBool(OPT_BACKUP_ADD_BAK))
 909                 {
 910                         // Don't add dot if there is no existing extension
 911                         if (ext.size() > 0)
 912                                 ext += _T(".");
 913                         ext += BACKUP_FILE_EXT;
 914                 }
 915
 916                 // Append time to filename if wanted so
 917                 // NOTE just adds timestamp at the moment as I couldn't figure out
 918                 // nice way to add a real time (invalid chars etc).
 919                 if (GetOptionsMgr()->GetBool(OPT_BACKUP_ADD_TIME))
 920                 {
 921                         struct tm tm;
 922                         time_t curtime = 0;
 923                         time(&curtime);
 924                         ::localtime_s(&tm, &curtime);
 925                         CString timestr;
 926                         timestr.Format(_T("%04d%02d%02d%02d%02d%02d"), tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
 927                         filename += _T("-");
 928                         filename += timestr;
 929                 }
 930
 931                 // Append filename and extension (+ optional .bak) to path
 932                 if ((bakPath.length() + filename.length() + ext.length())
 933                         < MAX_PATH_FULL)
 934                 {
 935                         success = true;
 936                         bakPath = paths::ConcatPath(bakPath, filename);
 937                         bakPath += _T(".");
 938                         bakPath += ext;
 939                 }
 940
 941                 if (success)
 942                 {
 943                         success = !!CopyFileW(TFile(pszPath).wpath().c_str(), TFile(bakPath).wpath().c_str(), FALSE);
 944                 }
 945
 946                 if (!success)
 947                 {
 948                         String msg = strutils::format_string1(
 949                                 _("Unable to backup original file:\n%1\n\nContinue anyway?"),
 950                                 pszPath);
 951                         if (AfxMessageBox(msg.c_str(), MB_YESNO | MB_ICONWARNING | MB_DONT_ASK_AGAIN) != IDYES)
 952                                 return false;
 953                 }
 954                 return true;
 955         }
 956
 957         // we got here because we're either not backing up of there was nothing to backup
 958         return true;
 959 }
 960
 961 /**
 962  * @brief Checks if path (file/folder) is read-only and asks overwriting it.
 963  *
 964  * @param strSavePath [in,out] Path where to save (file or folder)
 965  * @param bMultiFile [in] Single file or multiple files/folder
 966  * @param bApplyToAll [in,out] Apply last user selection for all items?
 967  * @return Users selection:
 968  * - IDOK: Item was not readonly, no actions
 969  * - IDYES/IDYESTOALL: Overwrite readonly item
 970  * - IDNO: User selected new filename (single file) or user wants to skip
 971  * - IDCANCEL: Cancel operation
 972  * @sa CMainFrame::SyncFileToVCS()
 973  * @sa CMergeDoc::DoSave()
 974  */
 975 int CMergeApp::HandleReadonlySave(String& strSavePath, bool bMultiFile,
 976                 bool &bApplyToAll)
 977 {
 978         CFileStatus status;
 979         int nRetVal = IDOK;
 980         bool bFileRO = false;
 981         bool bFileExists = false;
 982         String s;
 983         String str;
 984         CString title;
 985
 986         if (!strSavePath.empty())
 987         {
 988                 try
 989                 {
 990                         TFile file(strSavePath);
 991                         bFileExists = file.exists();
 992                         if (bFileExists)
 993                                 bFileRO = !file.canWrite();
 994                 }
 995                 catch (...)
 996                 {
 997                 }
 998         }
 999
1000         if (bFileExists && bFileRO)
1001         {
1002                 UINT userChoice = 0;
1003
1004                 // Don't ask again if its already asked
1005                 if (bApplyToAll)
1006                         userChoice = IDYES;
1007                 else
1008                 {
1009                         // Prompt for user choice
1010                         if (bMultiFile)
1011                         {
1012                                 // Multiple files or folder
1013                                 str = strutils::format_string1(_("%1\nis marked read-only. Would you like to override the read-only item?"), strSavePath);
1014                                 userChoice = AfxMessageBox(str.c_str(), MB_YESNOCANCEL |
1015                                                 MB_ICONWARNING | MB_DEFBUTTON3 | MB_DONT_ASK_AGAIN |
1016                                                 MB_YES_TO_ALL, IDS_SAVEREADONLY_MULTI);
1017                         }
1018                         else
1019                         {
1020                                 // Single file
1021                                 str = strutils::format_string1(_("%1 is marked read-only. Would you like to override the read-only file? (No to save as new filename.)"), strSavePath);
1022                                 userChoice = AfxMessageBox(str.c_str(), MB_YESNOCANCEL |
1023                                                 MB_ICONWARNING | MB_DEFBUTTON2 | MB_DONT_ASK_AGAIN,
1024                                                 IDS_SAVEREADONLY_FMT);
1025                         }
1026                 }
1027                 switch (userChoice)
1028                 {
1029                 // Overwrite read-only file
1030                 case IDYESTOALL:
1031                         bApplyToAll = true;  // Don't ask again (no break here)
1032                 case IDYES:
1033                         CFile::GetStatus(strSavePath.c_str(), status);
1034                         status.m_mtime = 0;             // Avoid unwanted changes
1035                         status.m_attribute &= ~CFile::readOnly;
1036                         CFile::SetStatus(strSavePath.c_str(), status);
1037                         nRetVal = IDYES;
1038                         break;
1039
1040                 // Save to new filename (single) /skip this item (multiple)
1041                 case IDNO:
1042                         if (!bMultiFile)
1043                         {
1044                                 if (SelectFile(AfxGetMainWnd()->GetSafeHwnd(), s, false, strSavePath.c_str()))
1045                                 {
1046                                         strSavePath = s;
1047                                         nRetVal = IDNO;
1048                                 }
1049                                 else
1050                                         nRetVal = IDCANCEL;
1051                         }
1052                         else
1053                                 nRetVal = IDNO;
1054                         break;
1055
1056                 // Cancel saving
1057                 case IDCANCEL:
1058                         nRetVal = IDCANCEL;
1059                         break;
1060                 }
1061         }
1062         return nRetVal;
1063 }
1064
1065 /**
1066  * @brief Is specified file a project file?
1067  * @param [in] filepath Full path to file to check.
1068  * @return true if file is a projectfile.
1069  */
1070 bool CMergeApp::IsProjectFile(const String& filepath) const
1071 {
1072         String ext;
1073         paths::SplitFilename(filepath, nullptr, nullptr, &ext);
1074         if (strutils::compare_nocase(ext, ProjectFile::PROJECTFILE_EXT) == 0)
1075                 return true;
1076         else
1077                 return false;
1078 }
1079
1080 bool CMergeApp::LoadProjectFile(const String& sProject, ProjectFile &project)
1081 {
1082         if (sProject.empty())
1083                 return false;
1084
1085         try
1086         {
1087         project.Read(sProject);
1088         }
1089         catch (Poco::Exception& e)
1090         {
1091                 String sErr = _("Unknown error attempting to open project file.");
1092                 sErr += ucr::toTString(e.displayText());
1093                 String msg = strutils::format_string2(_("Cannot open file\n%1\n\n%2"), sProject, sErr);
1094                 AfxMessageBox(msg.c_str(), MB_ICONSTOP);
1095                 return false;
1096         }
1097
1098         return true;
1099 }
1100
1101 bool CMergeApp::SaveProjectFile(const String& sProject, const ProjectFile &project)
1102 {
1103         try
1104         {
1105                 project.Save(sProject);
1106         }
1107         catch (Poco::Exception& e)
1108         {
1109                 String sErr = _("Unknown error attempting to save project file.");
1110                 sErr += ucr::toTString(e.displayText());
1111                 String msg = strutils::format_string2(_("Cannot open file\n%1\n\n%2"), sProject, sErr);
1112                 AfxMessageBox(msg.c_str(), MB_ICONSTOP);
1113                 return false;
1114         }
1115
1116         return true;
1117 }
1118
1119 /**
1120  * @brief Read project and perform comparison specified
1121  * @param [in] sProject Full path to project file.
1122  * @return `true` if loading project file and starting compare succeeded.
1123  */
1124 bool CMergeApp::LoadAndOpenProjectFile(const String& sProject, const String& sReportFile)
1125 {
1126         ProjectFile project;
1127         if (!LoadProjectFile(sProject, project))
1128                 return false;
1129
1130         bool rtn = true;
1131         for (auto& projItem : project.Items())
1132         {
1133                 PathContext tFiles;
1134                 bool bRecursive = false;
1135                 projItem.GetPaths(tFiles, bRecursive);
1136                 for (int i = 0; i < tFiles.GetSize(); ++i)
1137                 {
1138                         if (!paths::IsPathAbsolute(tFiles[i]))
1139                         {
1140                                 String sProjectDir = paths::GetParentPath(sProject);
1141                                 if (tFiles[i].substr(0, 1) == _T("\\"))
1142                                 {
1143                                         if (sProjectDir.length() > 1 && sProjectDir[1] == ':')
1144                                                 tFiles[i] = paths::ConcatPath(sProjectDir.substr(0, 2), tFiles[i]);
1145                                 }
1146                                 else
1147                                         tFiles[i] = paths::ConcatPath(sProjectDir, tFiles[i]);
1148                         }
1149                 }
1150                 bool bLeftReadOnly = projItem.GetLeftReadOnly();
1151                 bool bMiddleReadOnly = projItem.GetMiddleReadOnly();
1152                 bool bRightReadOnly = projItem.GetRightReadOnly();
1153                 if (projItem.HasFilter())
1154                 {
1155                         String filter = projItem.GetFilter();
1156                         filter = strutils::trim_ws(filter);
1157                         m_pGlobalFileFilter->SetFilter(filter);
1158                 }
1159                 if (projItem.HasSubfolders())
1160                         bRecursive = projItem.GetSubfolders() > 0;
1161
1162                 DWORD dwFlags[3] = {
1163                         static_cast<DWORD>(tFiles.GetPath(0).empty() ? FFILEOPEN_NONE : FFILEOPEN_PROJECT),
1164                         static_cast<DWORD>(tFiles.GetPath(1).empty() ? FFILEOPEN_NONE : FFILEOPEN_PROJECT),
1165                         static_cast<DWORD>(tFiles.GetPath(2).empty() ? FFILEOPEN_NONE : FFILEOPEN_PROJECT)
1166                 };
1167                 if (bLeftReadOnly)
1168                         dwFlags[0] |= FFILEOPEN_READONLY;
1169                 if (tFiles.GetSize() == 2)
1170                 {
1171                         if (bRightReadOnly)
1172                                 dwFlags[1] |= FFILEOPEN_READONLY;
1173                 }
1174                 else
1175                 {
1176                         if (bMiddleReadOnly)
1177                                 dwFlags[1] |= FFILEOPEN_READONLY;
1178                         if (bRightReadOnly)
1179                                 dwFlags[2] |= FFILEOPEN_READONLY;
1180                 }
1181
1182                 GetOptionsMgr()->SaveOption(OPT_CMP_INCLUDE_SUBDIRS, bRecursive);
1183
1184                 rtn &= GetMainFrame()->DoFileOpen(&tFiles, dwFlags, nullptr, sReportFile, bRecursive);
1185         }
1186
1187         AddToRecentProjectsMRU(sProject.c_str());
1188         return rtn;
1189 }
1190
1191 /**
1192  * @brief Return windows language ID of current WinMerge GUI language
1193  */
1194 WORD CMergeApp::GetLangId() const
1195 {
1196         return m_pLangDlg->GetLangId();
1197 }
1198
1199 /**
1200  * @brief Lang aware version of CStatusBar::SetIndicators()
1201  */
1202 void CMergeApp::SetIndicators(CStatusBar &sb, const UINT *rgid, int n) const
1203 {
1204         m_pLangDlg->SetIndicators(sb, rgid, n);
1205 }
1206
1207 /**
1208  * @brief Translate menu to current WinMerge GUI language
1209  */
1210 void CMergeApp::TranslateMenu(HMENU h) const
1211 {
1212         m_pLangDlg->TranslateMenu(h);
1213 }
1214
1215 /**
1216  * @brief Translate dialog to current WinMerge GUI language
1217  */
1218 void CMergeApp::TranslateDialog(HWND h) const
1219 {
1220         CWnd *pWnd = CWnd::FromHandle(h);
1221         pWnd->SetFont(const_cast<CFont *>(&m_fontGUI));
1222         pWnd->SendMessageToDescendants(WM_SETFONT, (WPARAM)m_fontGUI.m_hObject, MAKELPARAM(FALSE, 0), TRUE);
1223
1224         m_pLangDlg->TranslateDialog(h);
1225 }
1226
1227 /**
1228  * @brief Load string and translate to current WinMerge GUI language
1229  */
1230 String CMergeApp::LoadString(UINT id) const
1231 {
1232         return m_pLangDlg->LoadString(id);
1233 }
1234
1235 bool CMergeApp::TranslateString(const std::string& str, String& translated_str) const
1236 {
1237         return m_pLangDlg->TranslateString(str, translated_str);
1238 }
1239
1240 /**
1241  * @brief Load dialog caption and translate to current WinMerge GUI language
1242  */
1243 std::wstring CMergeApp::LoadDialogCaption(LPCTSTR lpDialogTemplateID) const
1244 {
1245         return m_pLangDlg->LoadDialogCaption(lpDialogTemplateID);
1246 }
1247
1248 /**
1249  * @brief Adds specified file to the recent projects list.
1250  * @param [in] sPathName Path to project file
1251  */
1252 void CMergeApp::AddToRecentProjectsMRU(LPCTSTR sPathName)
1253 {
1254         // sPathName will be added to the top of the MRU list.
1255         // If sPathName already exists in the MRU list, it will be moved to the top
1256         if (m_pRecentFileList != nullptr)    {
1257                 m_pRecentFileList->Add(sPathName);
1258                 m_pRecentFileList->WriteList();
1259         }
1260 }
1261
1262 void CMergeApp::SetupTempPath()
1263 {
1264         String instTemp = env::GetPerInstanceString(TempFolderPrefix);
1265         if (GetOptionsMgr()->GetBool(OPT_USE_SYSTEM_TEMP_PATH))
1266                 env::SetTemporaryPath(paths::ConcatPath(env::GetSystemTempPath(), instTemp));
1267         else
1268                 env::SetTemporaryPath(paths::ConcatPath(GetOptionsMgr()->GetString(OPT_CUSTOM_TEMP_PATH), instTemp));
1269 }
1270
1271 /**
1272  * @brief Handles menu selection from recent projects list
1273  * @param [in] nID Menu ID of the selected item
1274  */
1275 BOOL CMergeApp::OnOpenRecentFile(UINT nID)
1276 {
1277         return LoadAndOpenProjectFile(static_cast<const TCHAR *>(m_pRecentFileList->m_arrNames[nID-ID_FILE_PROJECT_MRU_FIRST]));
1278 }
1279
1280 /**
1281  * @brief Return if doc is in Merging/Editing mode
1282  */
1283 bool CMergeApp::GetMergingMode() const
1284 {
1285         return m_bMergingMode;
1286 }
1287
1288 /**
1289  * @brief Set doc to Merging/Editing mode
1290  */
1291 void CMergeApp::SetMergingMode(bool bMergingMode)
1292 {
1293         m_bMergingMode = bMergingMode;
1294         GetOptionsMgr()->SaveOption(OPT_MERGE_MODE, m_bMergingMode);
1295 }
1296
1297 /**
1298  * @brief Switch Merging/Editing mode and update
1299  * buffer read-only states accordingly
1300  */
1301 void CMergeApp::OnMergingMode()
1302 {
1303         bool bMergingMode = GetMergingMode();
1304
1305         if (!bMergingMode)
1306                 LangMessageBox(IDS_MERGE_MODE, MB_ICONINFORMATION | MB_DONT_DISPLAY_AGAIN);
1307         SetMergingMode(!bMergingMode);
1308 }
1309
1310 /**
1311  * @brief Update Menuitem for Merging Mode
1312  */
1313 void CMergeApp::OnUpdateMergingMode(CCmdUI* pCmdUI)
1314 {
1315         pCmdUI->Enable(true);
1316         pCmdUI->SetCheck(GetMergingMode());
1317 }
1318
1319 /**
1320  * @brief Update MergingMode UI in statusbar
1321  */
1322 void CMergeApp::OnUpdateMergingStatus(CCmdUI *pCmdUI)
1323 {
1324         String text = theApp.LoadString(IDS_MERGEMODE_MERGING);
1325         pCmdUI->SetText(text.c_str());
1326         pCmdUI->Enable(GetMergingMode());
1327 }
1328
1329 UINT CMergeApp::GetProfileInt(LPCTSTR lpszSection, LPCTSTR lpszEntry, int nDefault)
1330 {
1331         COptionsMgr *pOptions = GetOptionsMgr();
1332         String name = strutils::format(_T("%s/%s"), lpszSection, lpszEntry);
1333         if (!pOptions->Get(name).IsInt())
1334                 pOptions->InitOption(name, nDefault);
1335         return pOptions->GetInt(name);
1336 }
1337
1338 BOOL CMergeApp::WriteProfileInt(LPCTSTR lpszSection, LPCTSTR lpszEntry, int nValue)
1339 {
1340         COptionsMgr *pOptions = GetOptionsMgr();
1341         String name = strutils::format(_T("%s/%s"), lpszSection, lpszEntry);
1342         if (!pOptions->Get(name).IsInt())
1343                 pOptions->InitOption(name, nValue);
1344         return pOptions->SaveOption(name, nValue) == COption::OPT_OK;
1345 }
1346
1347 CString CMergeApp::GetProfileString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszDefault)
1348 {
1349         COptionsMgr *pOptions = GetOptionsMgr();
1350         String name = strutils::format(_T("%s/%s"), lpszSection, lpszEntry);
1351         if (!pOptions->Get(name).IsString())
1352                 pOptions->InitOption(name, lpszDefault ? lpszDefault : _T(""));
1353         return pOptions->GetString(name).c_str();
1354 }
1355
1356 BOOL CMergeApp::WriteProfileString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue)
1357 {
1358         COptionsMgr *pOptions = GetOptionsMgr();
1359         if (lpszEntry != nullptr)
1360         {
1361                 String name = strutils::format(_T("%s/%s"), lpszSection, lpszEntry);
1362                 if (!pOptions->Get(name).IsString())
1363                         pOptions->InitOption(name, lpszValue ? lpszValue : _T(""));
1364                 return pOptions->SaveOption(name, lpszValue ? lpszValue : _T("")) == COption::OPT_OK;
1365         }
1366         else
1367         {
1368                 String name = strutils::format(_T("%s/"), lpszSection);
1369                 pOptions->RemoveOption(name);
1370         }
1371         return TRUE;
1372 }