mainwindow.cpp

/*
 * Cppcheck - A tool for static C/C++ code analysis
 * Copyright (C) 2007-2026 Cppcheck team.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "mainwindow.h"

#include "addoninfo.h"
#include "applicationlist.h"
#include "aboutdialog.h"
#include "analyzerinfo.h"
#include "checkers.h"
#include "checkstatistics.h"
#include "checkthread.h"
#include "common.h"
#include "cppcheck.h"
#include "errortypes.h"
#include "filelist.h"
#include "filesettings.h"
#include "fileviewdialog.h"
#include "helpdialog.h"
#include "importproject.h"
#include "librarydialog.h"
#include "path.h"
#include "platform.h"
#include "projectfile.h"
#include "projectfiledialog.h"
#include "report.h"
#include "resultstree.h"
#include "resultsview.h"
#include "scratchpad.h"
#include "settings.h"
#include "showtypes.h"
#include "statsdialog.h"
#include "settingsdialog.h"
#include "standards.h"
#include "suppressions.h"
#include "threadhandler.h"
#include "threadresult.h"
#include "translationhandler.h"
#include "utils.h"
#include "threaddetails.h"

#include "ui_mainwindow.h"

#include "frontend.h"

#include <algorithm>
#include <cstddef>
#include <fstream>
#include <iterator>
#include <list>
#include <memory>
#include <set>
#include <string>
#include <unordered_set>
#include <utility>
#include <vector>

#include <QApplication>
#include <QAction>
#include <QActionGroup>
#include <QByteArray>
#include <QChar>
#include <QCloseEvent>
#include <QCoreApplication>
#include <QDateTime>
#include <QDesktopServices>
#include <QDebug>
#include <QDialog>
#include <QDir>
#include <QFile>
#include <QFileInfo>
#include <QHBoxLayout>
#include <QInputDialog>
#include <QKeySequence>
#include <QLabel>
#include <QLineEdit>
#include <QList>
#include <QMap>
#include <QMenu>
#include <QMessageBox>
#include <QtNetwork/QNetworkAccessManager>
#include <QtNetwork/QNetworkReply>
#include <QtNetwork/QNetworkRequest>
#include <QPushButton>
#include <QRegularExpression>
#include <QSettings>
#include <QSize>
#include <QTimer>
#include <QTemporaryFile>
#include <QToolBar>
#include <QUrl>
#include <QVariant>
#include <Qt>

#include "json.h"

static const QString compile_commands_json("compile_commands.json");

static QString fromNativePath(const QString& p) {
#ifdef Q_OS_WIN
    QString ret(p);
    ret.replace('\\', '/');
    return ret;
#else
    return p;
#endif
}

MainWindow::MainWindow(TranslationHandler* th, QSettings* settings) :
    mSettings(settings),
    mApplications(new ApplicationList(this)),
    mTranslation(th),
    mUI(new Ui::MainWindow),
    mPlatformActions(new QActionGroup(this)),
    mCStandardActions(new QActionGroup(this)),
    mCppStandardActions(new QActionGroup(this)),
    mSelectLanguageActions(new QActionGroup(this)),
    mSelectReportActions(new QActionGroup(this))
{
    {
        Settings tempSettings;
        tempSettings.exename = QCoreApplication::applicationFilePath().toStdString();
        Suppressions tempSupprs;
        Settings::loadCppcheckCfg(tempSettings, tempSupprs); // TODO: how to handle error?
        mCppcheckCfgProductName = QString::fromStdString(tempSettings.cppcheckCfgProductName);
        mCppcheckCfgAbout = QString::fromStdString(tempSettings.cppcheckCfgAbout);
    }

    mUI->setupUi(this);
    mThread = new ThreadHandler(this);
    mUI->mResults->initialize(mSettings, mApplications, mThread);

    // Filter timer to delay filtering results slightly while typing
    mFilterTimer = new QTimer(this);
    mFilterTimer->setInterval(500);
    mFilterTimer->setSingleShot(true);
    connect(mFilterTimer, &QTimer::timeout, this, &MainWindow::filterResults);

    // "Filter" toolbar
    mLineEditFilter = new QLineEdit(mUI->mToolBarFilter);
    mLineEditFilter->setPlaceholderText(tr("Quick Filter:"));
    mLineEditFilter->setClearButtonEnabled(true);
    mUI->mToolBarFilter->addWidget(mLineEditFilter);
    connect(mLineEditFilter, SIGNAL(textChanged(QString)), mFilterTimer, SLOT(start()));
    connect(mLineEditFilter, &QLineEdit::returnPressed, this, &MainWindow::filterResults);

    connect(mUI->mActionPrint, SIGNAL(triggered()), mUI->mResults, SLOT(print()));
    connect(mUI->mActionPrintPreview, SIGNAL(triggered()), mUI->mResults, SLOT(printPreview()));
    connect(mUI->mActionQuit, &QAction::triggered, this, &MainWindow::close);
    connect(mUI->mActionAnalyzeFiles, &QAction::triggered, this, &MainWindow::analyzeFiles);
    connect(mUI->mActionAnalyzeDirectory, &QAction::triggered, this, &MainWindow::analyzeDirectory);
    connect(mUI->mActionSettings, &QAction::triggered, this, &MainWindow::programSettings);
    connect(mUI->mActionClearResults, &QAction::triggered, this, &MainWindow::clearResults);
    connect(mUI->mActionOpenXML, &QAction::triggered, this, &MainWindow::openResults);

    connect(mUI->mActionShowStyle, &QAction::toggled, this, &MainWindow::showStyle);
    connect(mUI->mActionShowErrors, &QAction::toggled, this, &MainWindow::showErrors);
    connect(mUI->mActionShowWarnings, &QAction::toggled, this, &MainWindow::showWarnings);
    connect(mUI->mActionShowPortability, &QAction::toggled, this, &MainWindow::showPortability);
    connect(mUI->mActionShowPerformance, &QAction::toggled, this, &MainWindow::showPerformance);
    connect(mUI->mActionShowInformation, &QAction::toggled, this, &MainWindow::showInformation);
    connect(mUI->mActionShowCppcheck, &QAction::toggled, mUI->mResults, &ResultsView::showCppcheckResults);
    connect(mUI->mActionShowClang, &QAction::toggled, mUI->mResults, &ResultsView::showClangResults);
    connect(mUI->mActionCheckAll, &QAction::triggered, this, &MainWindow::checkAll);
    connect(mUI->mActionUncheckAll, &QAction::triggered, this, &MainWindow::uncheckAll);
    connect(mUI->mActionCollapseAll, &QAction::triggered, mUI->mResults, &ResultsView::collapseAllResults);
    connect(mUI->mActionExpandAll, &QAction::triggered, mUI->mResults, &ResultsView::expandAllResults);
    connect(mUI->mActionShowHidden, &QAction::triggered, mUI->mResults, &ResultsView::showHiddenResults);
    connect(mUI->mActionViewStats, &QAction::triggered, this, &MainWindow::showStatistics);
    connect(mUI->mActionLibraryEditor, &QAction::triggered, this, &MainWindow::showLibraryEditor);
    connect(mUI->mActionShowThreadDetails, &QAction::triggered, this, &MainWindow::showThreadDetails);

    connect(mUI->mActionReanalyzeModified, &QAction::triggered, this, &MainWindow::reAnalyzeModified);
    connect(mUI->mActionReanalyzeAll, &QAction::triggered, this, &MainWindow::reAnalyzeAll);
    connect(mUI->mActionCheckLibrary, &QAction::triggered, this, &MainWindow::checkLibrary);
    connect(mUI->mActionCheckConfiguration, &QAction::triggered, this, &MainWindow::checkConfiguration);

    connect(mUI->mActionStop, &QAction::triggered, this, &MainWindow::stopAnalysis);
    connect(mUI->mActionSave, &QAction::triggered, this, &MainWindow::save);

    // About menu
    connect(mUI->mActionAbout, &QAction::triggered, this, &MainWindow::about);
    connect(mUI->mActionLicense, &QAction::triggered, this, &MainWindow::showLicense);
    mUI->mActionEULA->setVisible(isCppcheckPremium());
    connect(mUI->mActionEULA, &QAction::triggered, this, &MainWindow::showEULA);

    // View > Toolbar menu
    connect(mUI->mActionToolBarMain, SIGNAL(toggled(bool)), this, SLOT(toggleMainToolBar()));
    connect(mUI->mActionToolBarView, SIGNAL(toggled(bool)), this, SLOT(toggleViewToolBar()));
    connect(mUI->mActionToolBarFilter, SIGNAL(toggled(bool)), this, SLOT(toggleFilterToolBar()));

    connect(mUI->mActionAuthors, &QAction::triggered, this, &MainWindow::showAuthors);
    connect(mThread, &ThreadHandler::done, this, &MainWindow::analysisDone);
    connect(mThread, &ThreadHandler::log, mUI->mResults, &ResultsView::log);
    connect(mThread, &ThreadHandler::debugError, mUI->mResults, &ResultsView::debugError);
    connect(mUI->mResults, &ResultsView::gotResults, this, &MainWindow::resultsAdded);
    connect(mUI->mResults, &ResultsView::resultsHidden, mUI->mActionShowHidden, &QAction::setEnabled);
    connect(mUI->mResults, &ResultsView::checkSelected, this, &MainWindow::performSelectedFilesCheck);
    connect(mUI->mResults, &ResultsView::suppressIds, this, &MainWindow::suppressIds);
    connect(mUI->mMenuView, &QMenu::aboutToShow, this, &MainWindow::aboutToShowViewMenu);

    // Change report type
    connect(mUI->mActionReportNormal, &QAction::triggered, this, &MainWindow::changeReportType);
    connect(mUI->mActionReportAutosar, &QAction::triggered, this, &MainWindow::changeReportType);
    connect(mUI->mActionReportCertC, &QAction::triggered, this, &MainWindow::changeReportType);
    connect(mUI->mActionReportCertCpp, &QAction::triggered, this, &MainWindow::changeReportType);
    connect(mUI->mActionReportMisraC, &QAction::triggered, this, &MainWindow::changeReportType);
    connect(mUI->mActionReportMisraCpp2008, &QAction::triggered, this, &MainWindow::changeReportType);
    connect(mUI->mActionReportMisraCpp2023, &QAction::triggered, this, &MainWindow::changeReportType);

    // File menu
    connect(mUI->mActionNewProjectFile, &QAction::triggered, this, &MainWindow::newProjectFile);
    connect(mUI->mActionOpenProjectFile, &QAction::triggered, this, &MainWindow::openProjectFile);
    connect(mUI->mActionShowScratchpad, &QAction::triggered, this, &MainWindow::showScratchpad);
    connect(mUI->mActionCloseProjectFile, &QAction::triggered, this, &MainWindow::closeProjectFile);
    connect(mUI->mActionEditProjectFile, &QAction::triggered, this, &MainWindow::editProjectFile);

    connect(mUI->mActionHelpContents, &QAction::triggered, this, &MainWindow::openHelpContents);

    loadSettings();

    mThread->initialize(mUI->mResults);
    if (mProjectFile) {
        enableProjectActions(true);
        formatAndSetTitle(tr("Project:") + ' ' + mProjectFile->getFilename());
    } else {
        enableProjectActions(false);
        formatAndSetTitle();
    }

    enableCheckButtons(true);

    mUI->mActionPrint->setShortcut(QKeySequence::Print);
    enableResultsButtons();
    enableProjectOpenActions(true);

    // Must setup MRU menu before CLI param handling as it can load a
    // project file and update MRU menu.
    for (int i = 0; i < MaxRecentProjects; ++i) {
        mRecentProjectActs[i] = new QAction(this);
        mRecentProjectActs[i]->setVisible(false);
        connect(mRecentProjectActs[i], SIGNAL(triggered()),
                this, SLOT(openRecentProject()));
    }
    mRecentProjectActs[MaxRecentProjects] = nullptr; // The separator
    mUI->mActionProjectMRU->setVisible(false);
    updateMRUMenuItems();

    QStringList args = QCoreApplication::arguments();
    //Remove the application itself
    args.removeFirst();
    if (!args.isEmpty()) {
        handleCLIParams(args);
    }

    for (int i = 0; i < mPlatforms.getCount(); i++) {
        PlatformData platform = mPlatforms.mPlatforms[i];
        auto *action = new QAction(this);
        platform.mActMainWindow = action;
        mPlatforms.mPlatforms[i] = platform;
        action->setText(platform.mTitle);
        action->setData(platform.mType);
        action->setCheckable(true);
        action->setActionGroup(mPlatformActions);
        mUI->mMenuAnalyze->insertAction(mUI->mActionPlatforms, action);
        connect(action, SIGNAL(triggered()), this, SLOT(selectPlatform()));
    }

    mUI->mActionReportNormal->setActionGroup(mSelectReportActions);
    mUI->mActionReportAutosar->setActionGroup(mSelectReportActions);
    mUI->mActionReportCertC->setActionGroup(mSelectReportActions);
    mUI->mActionReportCertCpp->setActionGroup(mSelectReportActions);
    mUI->mActionReportMisraC->setActionGroup(mSelectReportActions);
    mUI->mActionReportMisraCpp2008->setActionGroup(mSelectReportActions);
    mUI->mActionReportMisraCpp2023->setActionGroup(mSelectReportActions);

    mUI->mActionC89->setActionGroup(mCStandardActions);
    mUI->mActionC99->setActionGroup(mCStandardActions);
    mUI->mActionC11->setActionGroup(mCStandardActions);
    //mUI->mActionC17->setActionGroup(mCStandardActions);
    //mUI->mActionC23->setActionGroup(mCStandardActions);
    //mUI->mActionC2Y->setActionGroup(mCStandardActions);

    mUI->mActionCpp03->setActionGroup(mCppStandardActions);
    mUI->mActionCpp11->setActionGroup(mCppStandardActions);
    mUI->mActionCpp14->setActionGroup(mCppStandardActions);
    mUI->mActionCpp17->setActionGroup(mCppStandardActions);
    mUI->mActionCpp20->setActionGroup(mCppStandardActions);
    //mUI->mActionCpp23->setActionGroup(mCppStandardActions);
    //mUI->mActionCpp26->setActionGroup(mCppStandardActions);

    mUI->mActionEnforceC->setActionGroup(mSelectLanguageActions);
    mUI->mActionEnforceCpp->setActionGroup(mSelectLanguageActions);
    mUI->mActionAutoDetectLanguage->setActionGroup(mSelectLanguageActions);

    // TODO: we no longer default to a Windows platform in CLI - so we should probably also get rid of this in the GUI
    // For Windows platforms default to Win32 checked platform.
    // For other platforms default to unspecified/default which means the
    // platform Cppcheck GUI was compiled on.
#if defined(_WIN32)
    constexpr Platform::Type defaultPlatform = Platform::Type::Win32W;
#else
    constexpr Platform::Type defaultPlatform = Platform::Type::Unspecified;
#endif
    PlatformData &platform = mPlatforms.get(static_cast<Platform::Type>(mSettings->value(SETTINGS_CHECKED_PLATFORM, defaultPlatform).toInt()));
    platform.mActMainWindow->setChecked(true);

    mNetworkAccessManager = new QNetworkAccessManager(this);
    connect(mNetworkAccessManager, &QNetworkAccessManager::finished,
            this, &MainWindow::replyFinished);

    mUI->mLabelInformation->setVisible(false);
    mUI->mButtonHideInformation->setVisible(false);
    connect(mUI->mButtonHideInformation, &QPushButton::clicked,
            this, &MainWindow::hideInformation);

    if (mSettings->value(SETTINGS_CHECK_FOR_UPDATES, false).toBool()) {
        // Is there a new version?
        if (isCppcheckPremium()) {
            const QUrl url("https://files.cppchecksolutions.com/version.txt");
            mNetworkAccessManager->get(QNetworkRequest(url));
        } else {
            const QUrl url("https://cppcheck.sourceforge.io/version.txt");
            mNetworkAccessManager->get(QNetworkRequest(url));
        }
    } else {
        delete mUI->mLayoutInformation;
    }

    changeReportType();
}

MainWindow::~MainWindow()
{
    delete mProjectFile;
    delete mScratchPad;
    delete mUI;
}

void MainWindow::handleCLIParams(const QStringList &params)
{
    int index;
    if (params.contains("-p")) {
        index = params.indexOf("-p");
        if ((index + 1) < params.length())
            loadProjectFile(params[index + 1]);
    } else if (params.contains("-l")) {
        QString logFile;
        index = params.indexOf("-l");
        if ((index + 1) < params.length())
            logFile = params[index + 1];

        if (params.contains("-d")) {
            QString checkedDir;
            index = params.indexOf("-d");
            if ((index + 1) < params.length())
                checkedDir = params[index + 1];

            loadResults(logFile, checkedDir);
        } else {
            loadResults(logFile);
        }
    } else if ((index = params.indexOf(QRegularExpression(".*\\.cppcheck$", QRegularExpression::CaseInsensitiveOption))) >= 0 && index < params.length() && QFile(params[index]).exists()) {
        loadProjectFile(params[index]);
    } else if ((index = params.indexOf(QRegularExpression(".*\\.xml$", QRegularExpression::CaseInsensitiveOption))) >= 0 && index < params.length() && QFile(params[index]).exists()) {
        loadResults(params[index],QDir::currentPath());
    } else
        doAnalyzeFiles(params);
}

void MainWindow::loadSettings()
{
    // Window/dialog sizes
    if (mSettings->value(SETTINGS_WINDOW_MAXIMIZED, false).toBool()) {
        showMaximized();
    } else {
        resize(mSettings->value(SETTINGS_WINDOW_WIDTH, 800).toInt(),
               mSettings->value(SETTINGS_WINDOW_HEIGHT, 600).toInt());
    }

    const ReportType reportType = static_cast<ReportType>(mSettings->value(SETTINGS_REPORT_TYPE, static_cast<int>(ReportType::normal)).toInt());
    mUI->mActionReportNormal->setChecked(reportType <= ReportType::normal);
    mUI->mActionReportAutosar->setChecked(reportType == ReportType::autosar);
    mUI->mActionReportCertC->setChecked(reportType == ReportType::certC);
    mUI->mActionReportCertCpp->setChecked(reportType == ReportType::certCpp);
    mUI->mActionReportMisraC->setChecked(reportType == ReportType::misraC2012 ||
                                         reportType == ReportType::misraC2023 ||
                                         reportType == ReportType::misraC2025);
    mUI->mActionReportMisraCpp2008->setChecked(reportType == ReportType::misraCpp2008);
    mUI->mActionReportMisraCpp2023->setChecked(reportType == ReportType::misraCpp2023);

    const ShowTypes &types = mUI->mResults->getShowTypes();
    mUI->mActionShowStyle->setChecked(types.isShown(ShowTypes::ShowStyle));
    mUI->mActionShowErrors->setChecked(types.isShown(ShowTypes::ShowErrors));
    mUI->mActionShowWarnings->setChecked(types.isShown(ShowTypes::ShowWarnings));
    mUI->mActionShowPortability->setChecked(types.isShown(ShowTypes::ShowPortability));
    mUI->mActionShowPerformance->setChecked(types.isShown(ShowTypes::ShowPerformance));
    mUI->mActionShowInformation->setChecked(types.isShown(ShowTypes::ShowInformation));
    mUI->mActionShowCppcheck->setChecked(true);
    mUI->mActionShowClang->setChecked(true);

    Standards standards;
    standards.setC(mSettings->value(SETTINGS_STD_C, QString()).toString().toStdString());
    mUI->mActionC89->setChecked(standards.c == Standards::C89);
    mUI->mActionC99->setChecked(standards.c == Standards::C99);
    mUI->mActionC11->setChecked(standards.c == Standards::C11);
    //mUI->mActionC17->setChecked(standards.c == Standards::C17);
    //mUI->mActionC23->setChecked(standards.c == Standards::C23);
    //mUI->mActionC2Y->setChecked(standards.c == Standards::C2Y);
    standards.setCPP(mSettings->value(SETTINGS_STD_CPP, QString()).toString().toStdString());
    mUI->mActionCpp03->setChecked(standards.cpp == Standards::CPP03);
    mUI->mActionCpp11->setChecked(standards.cpp == Standards::CPP11);
    mUI->mActionCpp14->setChecked(standards.cpp == Standards::CPP14);
    mUI->mActionCpp17->setChecked(standards.cpp == Standards::CPP17);
    mUI->mActionCpp20->setChecked(standards.cpp == Standards::CPP20);
    //mUI->mActionCpp23->setChecked(standards.cpp == Standards::CPP23);
    //mUI->mActionCpp26->setChecked(standards.cpp == Standards::CPP26);

    // Main window settings
    const bool showMainToolbar = mSettings->value(SETTINGS_TOOLBARS_MAIN_SHOW, true).toBool();
    mUI->mActionToolBarMain->setChecked(showMainToolbar);
    mUI->mToolBarMain->setVisible(showMainToolbar);

    const bool showViewToolbar = mSettings->value(SETTINGS_TOOLBARS_VIEW_SHOW, true).toBool();
    mUI->mActionToolBarView->setChecked(showViewToolbar);
    mUI->mToolBarView->setVisible(showViewToolbar);

    const bool showFilterToolbar = mSettings->value(SETTINGS_TOOLBARS_FILTER_SHOW, true).toBool();
    mUI->mActionToolBarFilter->setChecked(showFilterToolbar);
    mUI->mToolBarFilter->setVisible(showFilterToolbar);

    const Standards::Language enforcedLanguage = static_cast<Standards::Language>(mSettings->value(SETTINGS_ENFORCED_LANGUAGE, 0).toInt());
    if (enforcedLanguage == Standards::Language::CPP)
        mUI->mActionEnforceCpp->setChecked(true);
    else if (enforcedLanguage == Standards::Language::C)
        mUI->mActionEnforceC->setChecked(true);
    else
        mUI->mActionAutoDetectLanguage->setChecked(true);

    const bool succeeded = mApplications->loadSettings();
    if (!succeeded) {
        const QString msg = tr("There was a problem with loading the editor application settings.\n\n"
                               "This is probably because the settings were changed between the Cppcheck versions. "
                               "Please check (and fix) the editor application settings, otherwise the editor "
                               "program might not start correctly.");
        QMessageBox msgBox(QMessageBox::Warning,
                           tr("Cppcheck"),
                           msg,
                           QMessageBox::Ok,
                           this);
        msgBox.exec();
    }

    const QString projectFile = mSettings->value(SETTINGS_OPEN_PROJECT, QString()).toString();
    if (!projectFile.isEmpty() && QCoreApplication::arguments().size()==1) {
        QFileInfo inf(projectFile);
        if (inf.exists() && inf.isReadable()) {
            setPath(SETTINGS_LAST_PROJECT_PATH, projectFile);
            mProjectFile = new ProjectFile(this);
            mProjectFile->setActiveProject();
            mProjectFile->read(projectFile);
            loadLastResults();
            QDir::setCurrent(inf.absolutePath());
        }
    }
}

static ReportType getMisraCReportType(const QStringList &standards)
{
    if (standards.contains(CODING_STANDARD_MISRA_C_2023))
        return ReportType::misraC2023;
    if (standards.contains(CODING_STANDARD_MISRA_C_2025))
        return ReportType::misraC2025;
    return ReportType::misraC2012;
}

void MainWindow::saveSettings() const
{
    // Window/dialog sizes
    mSettings->setValue(SETTINGS_WINDOW_WIDTH, size().width());
    mSettings->setValue(SETTINGS_WINDOW_HEIGHT, size().height());
    mSettings->setValue(SETTINGS_WINDOW_MAXIMIZED, isMaximized());

    const ReportType reportType = mUI->mActionReportAutosar->isChecked() ? ReportType::autosar :
                                  mUI->mActionReportCertC->isChecked() ? ReportType::certC :
                                  mUI->mActionReportCertCpp->isChecked() ? ReportType::certCpp :
                                  mUI->mActionReportMisraC->isChecked() ? (mProjectFile ? getMisraCReportType(mProjectFile->getCodingStandards()) : ReportType::misraC2012) :
                                  mUI->mActionReportMisraCpp2008->isChecked() ? ReportType::misraCpp2008 :
                                  mUI->mActionReportMisraCpp2023->isChecked() ? ReportType::misraCpp2023 :
                                  ReportType::normal;
    mSettings->setValue(SETTINGS_REPORT_TYPE, static_cast<int>(reportType));

    // Show * states
    mSettings->setValue(SETTINGS_SHOW_STYLE, mUI->mActionShowStyle->isChecked());
    mSettings->setValue(SETTINGS_SHOW_ERRORS, mUI->mActionShowErrors->isChecked());
    mSettings->setValue(SETTINGS_SHOW_WARNINGS, mUI->mActionShowWarnings->isChecked());
    mSettings->setValue(SETTINGS_SHOW_PORTABILITY, mUI->mActionShowPortability->isChecked());
    mSettings->setValue(SETTINGS_SHOW_PERFORMANCE, mUI->mActionShowPerformance->isChecked());
    mSettings->setValue(SETTINGS_SHOW_INFORMATION, mUI->mActionShowInformation->isChecked());

    if (mUI->mActionC89->isChecked())
        mSettings->setValue(SETTINGS_STD_C, "C89");
    if (mUI->mActionC99->isChecked())
        mSettings->setValue(SETTINGS_STD_C, "C99");
    if (mUI->mActionC11->isChecked())
        mSettings->setValue(SETTINGS_STD_C, "C11");
    //if (mUI->mActionC17->isChecked())
    //    mSettings->setValue(SETTINGS_STD_C, "C17");
    //if (mUI->mActionC23->isChecked())
    //    mSettings->setValue(SETTINGS_STD_C, "C23");
    //if (mUI->mActionC2Y->isChecked())
    //    mSettings->setValue(SETTINGS_STD_C, "C2Y");

    if (mUI->mActionCpp03->isChecked())
        mSettings->setValue(SETTINGS_STD_CPP, "C++03");
    if (mUI->mActionCpp11->isChecked())
        mSettings->setValue(SETTINGS_STD_CPP, "C++11");
    if (mUI->mActionCpp14->isChecked())
        mSettings->setValue(SETTINGS_STD_CPP, "C++14");
    if (mUI->mActionCpp17->isChecked())
        mSettings->setValue(SETTINGS_STD_CPP, "C++17");
    if (mUI->mActionCpp20->isChecked())
        mSettings->setValue(SETTINGS_STD_CPP, "C++20");
    //if (mUI.mActionCpp23->isChecked())
    //    mSettings->setValue(SETTINGS_STD_CPP, "C++23");
    //if (mUI.mActionCpp26->isChecked())
    //    mSettings->setValue(SETTINGS_STD_CPP, "C++26");

    // Main window settings
    mSettings->setValue(SETTINGS_TOOLBARS_MAIN_SHOW, mUI->mToolBarMain->isVisible());
    mSettings->setValue(SETTINGS_TOOLBARS_VIEW_SHOW, mUI->mToolBarView->isVisible());
    mSettings->setValue(SETTINGS_TOOLBARS_FILTER_SHOW, mUI->mToolBarFilter->isVisible());

    if (mUI->mActionEnforceCpp->isChecked())
        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Standards::Language::CPP);
    else if (mUI->mActionEnforceC->isChecked())
        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Standards::Language::C);
    else
        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Standards::Language::None);

    mApplications->saveSettings();

    mSettings->setValue(SETTINGS_LANGUAGE, mTranslation->getCurrentLanguage());

    mSettings->setValue(SETTINGS_OPEN_PROJECT, mProjectFile ? mProjectFile->getFilename() : QString());

    mUI->mResults->saveSettings(mSettings);
}

void MainWindow::doAnalyzeProject(ImportProject p, const bool checkLibrary, const bool checkConfiguration)
{
    Settings checkSettings;
    auto supprs = std::make_shared<Suppressions>();
    if (!getCppcheckSettings(checkSettings, *supprs))
        return;

    clearResults();

    mIsLogfileLoaded = false;
    if (mProjectFile) {
        std::vector<std::string> v;
        const QStringList excluded = mProjectFile->getExcludedPaths();
        std::transform(excluded.cbegin(), excluded.cend(), std::back_inserter(v), [](const QString& e) {
            return e.toStdString();
        });
        p.ignorePaths(v);

        if (!mProjectFile->getAnalyzeAllVsConfigs()) {
            const Platform::Type platform = static_cast<Platform::Type>(mSettings->value(SETTINGS_CHECKED_PLATFORM, 0).toInt());
            std::vector<std::string> configurations;
            const QStringList configs = mProjectFile->getVsConfigurations();
            std::transform(configs.cbegin(), configs.cend(), std::back_inserter(configurations), [](const QString& e) {
                return e.toStdString();
            });
            p.selectVsConfigurations(platform, configurations);
        }
    } else {
        enableProjectActions(false);
    }

    mUI->mResults->setResultsSource(ResultsTree::ResultsSource::Analysis);
    mThread->clearFiles();

    mUI->mResults->checkingStarted(p.fileSettings.size());

    QDir inf(mCurrentDirectory);
    const QString checkPath = inf.canonicalPath();
    setPath(SETTINGS_LAST_CHECK_PATH, checkPath);

    checkLockDownUI(); // lock UI while checking

    mUI->mResults->setCheckDirectory(checkPath);
    checkSettings.force = false;
    checkSettings.checkLibrary = checkLibrary;
    checkSettings.checkConfiguration = checkConfiguration;

    if (mProjectFile)
        qDebug() << "Checking project file" << mProjectFile->getFilename();

    if (!checkSettings.buildDir.empty()) {
        checkSettings.loadSummaries();
        std::list<std::string> sourcefiles;
        AnalyzerInformation::writeFilesTxt(checkSettings.buildDir, sourcefiles, p.fileSettings);
    }

    //mThread->SetanalyzeProject(true);
    if (mProjectFile) {
        mThread->setAddonsAndTools(mProjectFile->getAddonsAndTools());
        QString clangHeaders = mSettings->value(SETTINGS_VS_INCLUDE_PATHS).toString();
        mThread->setClangIncludePaths(clangHeaders.split(";"));
        mThread->setSuppressions(mProjectFile->getSuppressions());
    }

    const Standards::Language enforcedLang = static_cast<Standards::Language>(mSettings->value(SETTINGS_ENFORCED_LANGUAGE, 0).toInt());
    frontend::applyLang(p.fileSettings, checkSettings, enforcedLang);

    mThread->setProject(p);
    mThread->check(checkSettings, supprs);
    mUI->mResults->setCheckSettings(checkSettings);
}

void MainWindow::doAnalyzeFiles(const QStringList &files, const bool checkLibrary, const bool checkConfiguration)
{
    if (files.isEmpty())
        return;

    Settings checkSettings;
    auto supprs = std::make_shared<Suppressions>();
    if (!getCppcheckSettings(checkSettings, *supprs))
        return;

    clearResults();

    mIsLogfileLoaded = false;
    FileList pathList;
    pathList.addPathList(files);
    if (mProjectFile) {
        pathList.addExcludeList(mProjectFile->getExcludedPaths());
    } else {
        enableProjectActions(false);
    }
    QStringList fileNames = pathList.getFileList();

    mUI->mResults->clear(true);
    mUI->mResults->setResultsSource(ResultsTree::ResultsSource::Analysis);
    mThread->clearFiles();

    if (fileNames.isEmpty()) {
        QMessageBox msg(QMessageBox::Warning,
                        tr("Cppcheck"),
                        tr("No suitable files found to analyze!"),
                        QMessageBox::Ok,
                        this);
        msg.exec();
        return;
    }

    std::list<FileWithDetails> fdetails = enrichFilesForAnalysis(fileNames, checkSettings);

    // TODO: lock UI here?
    mUI->mResults->checkingStarted(fdetails.size());
    mThread->setFiles(std::move(fdetails));
    if (mProjectFile && !checkConfiguration)
        mThread->setAddonsAndTools(mProjectFile->getAddonsAndTools());
    mThread->setSuppressions(mProjectFile ? mProjectFile->getCheckingSuppressions() : QList<SuppressionList::Suppression>());
    QDir inf(mCurrentDirectory);
    const QString checkPath = inf.canonicalPath();
    setPath(SETTINGS_LAST_CHECK_PATH, checkPath);

    checkLockDownUI(); // lock UI while checking

    mUI->mResults->setCheckDirectory(checkPath);
    checkSettings.checkLibrary = checkLibrary;
    checkSettings.checkConfiguration = checkConfiguration;

    if (mProjectFile)
        qDebug() << "Checking project file" << mProjectFile->getFilename();

    if (!checkSettings.buildDir.empty()) {
        checkSettings.loadSummaries();
        std::list<std::string> sourcefiles;
        std::transform(fileNames.cbegin(), fileNames.cend(), std::back_inserter(sourcefiles), [](const QString& s) {
            return s.toStdString();
        });
        AnalyzerInformation::writeFilesTxt(checkSettings.buildDir, sourcefiles, {});
    }

    mThread->setCheckFiles(true);
    mThread->check(checkSettings, supprs);
    mUI->mResults->setCheckSettings(checkSettings);
}

void MainWindow::analyzeCode(const QString& code, const QString& filename)
{
    Settings checkSettings;
    Suppressions supprs;
    if (!getCppcheckSettings(checkSettings, supprs))
        return;

    // TODO: split ErrorLogger from ThreadResult
    // Initialize dummy ThreadResult as ErrorLogger
    ThreadResult result;
    connect(&result, SIGNAL(progress(int,QString)),
            mUI->mResults, SLOT(progress(int,QString)));
    connect(&result, SIGNAL(error(ErrorItem)),
            mUI->mResults, SLOT(error(ErrorItem)));
    connect(&result, SIGNAL(log(QString)),
            mUI->mResults, SLOT(log(QString)));
    connect(&result, SIGNAL(debugError(ErrorItem)),
            mUI->mResults, SLOT(debugError(ErrorItem)));

    // Create CppCheck instance
    CppCheck cppcheck(checkSettings, supprs, result, nullptr, true, nullptr);

    // Check
    checkLockDownUI();
    clearResults();
    mUI->mResults->checkingStarted(1);
    {
        const std::string code_s = code.toStdString();
        // TODO: apply enforcedLanguage?
        cppcheck.checkBuffer(FileWithDetails(filename.toStdString(), Path::identify(filename.toStdString(), false), 0), code_s.data(), code_s.size());
    }
    analysisDone();

    // Expand results
    if (mUI->mResults->hasVisibleResults())
        mUI->mResults->expandAllResults();
}

QStringList MainWindow::selectFilesToAnalyze(QFileDialog::FileMode mode)
{
    if (mProjectFile) {
        QMessageBox msgBox(this);
        msgBox.setWindowTitle(tr("Cppcheck"));
        const QString msg(tr("You must close the project file before selecting new files or directories!"));
        msgBox.setText(msg);
        msgBox.setIcon(QMessageBox::Critical);
        msgBox.exec();
        return QStringList();
    }

    QStringList selected;

    // NOTE: we use QFileDialog::getOpenFileNames() and
    // QFileDialog::getExistingDirectory() because they show native Windows
    // selection dialog which is a lot more usable than Qt:s own dialog.
    if (mode == QFileDialog::ExistingFiles) {
        QMap<QString,QString> filters;
        filters[tr("C/C++ Source")] = FileList::getDefaultFilters().join(" ");
        filters[tr("Compile database")] = compile_commands_json;
        filters[tr("Visual Studio")] = "*.sln *.slnx *.vcxproj";
        filters[tr("Borland C++ Builder 6")] = "*.bpr";
        QString lastFilter = mSettings->value(SETTINGS_LAST_ANALYZE_FILES_FILTER).toString();
        selected = QFileDialog::getOpenFileNames(this,
                                                 tr("Select files to analyze"),
                                                 getPath(SETTINGS_LAST_CHECK_PATH),
                                                 toFilterString(filters),
                                                 &lastFilter);
        mSettings->setValue(SETTINGS_LAST_ANALYZE_FILES_FILTER, lastFilter);

        if (selected.isEmpty())
            mCurrentDirectory.clear();
        else {
            QFileInfo inf(selected[0]);
            mCurrentDirectory = inf.absolutePath();
        }
        formatAndSetTitle();
    } else if (mode == QFileDialog::Directory) {
        QString dir = QFileDialog::getExistingDirectory(this,
                                                        tr("Select directory to analyze"),
                                                        getPath(SETTINGS_LAST_CHECK_PATH));
        if (!dir.isEmpty()) {
            qDebug() << "Setting current directory to: " << dir;
            mCurrentDirectory = dir;
            selected.append(dir);
            dir = QDir::toNativeSeparators(dir);
            formatAndSetTitle(dir);
        }
    }
    if (!mCurrentDirectory.isEmpty())
        setPath(SETTINGS_LAST_CHECK_PATH, mCurrentDirectory);

    return selected;
}

void MainWindow::analyzeFiles()
{
    Settings::terminate(false);

    QStringList selected = selectFilesToAnalyze(QFileDialog::ExistingFiles);

    const QString file0 = (!selected.empty() ? selected[0].toLower() : QString());
    if (file0.endsWith(".sln")
        || file0.endsWith(".slnx")
        || file0.endsWith(".vcxproj")
        || file0.endsWith(compile_commands_json)
        || file0.endsWith(".bpr")) {
        ImportProject p;
        p.import(selected[0].toStdString());

        if (file0.endsWith(".sln") || file0.endsWith(".slnx")) {
            QStringList configs;
            for (auto it = p.fileSettings.cbegin(); it != p.fileSettings.cend(); ++it) {
                const QString cfg(QString::fromStdString(it->cfg));
                if (!configs.contains(cfg))
                    configs.push_back(cfg);
            }
            configs.sort();

            bool ok = false;
            const QString cfg = QInputDialog::getItem(this, tr("Select configuration"), tr("Select the configuration that will be analyzed"), configs, 0, false, &ok);
            if (!ok)
                return;
            p.ignoreOtherConfigs(cfg.toStdString());
        }

        doAnalyzeProject(p); // TODO: avoid copy
        return;
    }

    doAnalyzeFiles(selected);
}

void MainWindow::analyzeDirectory()
{
    QStringList dir = selectFilesToAnalyze(QFileDialog::Directory);
    if (dir.isEmpty())
        return;

    QDir checkDir(dir[0]);
    QStringList filters;
    filters << "*.cppcheck";
    checkDir.setFilter(QDir::Files | QDir::Readable);
    checkDir.setNameFilters(filters);
    QStringList projFiles = checkDir.entryList();
    if (!projFiles.empty()) {
        if (projFiles.size() == 1) {
            // If one project file found, suggest loading it
            QMessageBox msgBox(this);
            msgBox.setWindowTitle(tr("Cppcheck"));
            const QString msg(tr("Found project file: %1\n\nDo you want to "
                                 "load this project file instead?").arg(projFiles[0]));
            msgBox.setText(msg);
            msgBox.setIcon(QMessageBox::Warning);
            msgBox.addButton(QMessageBox::Yes);
            msgBox.addButton(QMessageBox::No);
            msgBox.setDefaultButton(QMessageBox::Yes);
            const int dlgResult = msgBox.exec();
            if (dlgResult == QMessageBox::Yes) {
                QString path = checkDir.canonicalPath();
                if (!path.endsWith("/"))
                    path += "/";
                path += projFiles[0];
                loadProjectFile(path);
            } else {
                doAnalyzeFiles(dir);
            }
        } else {
            // If multiple project files found inform that there are project
            // files also available.
            QMessageBox msgBox(this);
            msgBox.setWindowTitle(tr("Cppcheck"));
            const QString msg(tr("Found project files from the directory.\n\n"
                                 "Do you want to proceed analysis without "
                                 "using any of these project files?"));
            msgBox.setText(msg);
            msgBox.setIcon(QMessageBox::Warning);
            msgBox.addButton(QMessageBox::Yes);
            msgBox.addButton(QMessageBox::No);
            msgBox.setDefaultButton(QMessageBox::Yes);
            const int dlgResult = msgBox.exec();
            if (dlgResult == QMessageBox::Yes) {
                doAnalyzeFiles(dir);
            }
        }
    } else {
        doAnalyzeFiles(dir);
    }
}

void MainWindow::addIncludeDirs(const QStringList &includeDirs, Settings &result)
{
    for (const QString& dir : includeDirs) {
        QString incdir;
        if (!QDir::isAbsolutePath(dir))
            incdir = mCurrentDirectory + "/";
        incdir += dir;
        incdir = QDir::cleanPath(incdir);

        // include paths must end with '/'
        if (!incdir.endsWith("/"))
            incdir += "/";
        result.includePaths.push_back(incdir.toStdString());
    }
}

Library::Error MainWindow::loadLibrary(Library &library, const QString &filename)
{
    Library::Error ret;

    // Try to load the library from the project folder..
    if (mProjectFile) {
        QString path = QFileInfo(mProjectFile->getFilename()).canonicalPath();
        QString libpath = path+"/"+filename;
        qDebug().noquote() << "looking for library '" + libpath + "'";
        ret = library.load(nullptr, libpath.toLatin1());
        if (ret.errorcode != Library::ErrorCode::FILE_NOT_FOUND)
            return ret;
    }

    // Try to load the library from the application folder..
    const QString appPath = QFileInfo(QCoreApplication::applicationFilePath()).canonicalPath();
    QString libpath = appPath+"/"+filename;
    qDebug().noquote() << "looking for library '" + libpath + "'";
    ret = library.load(nullptr, libpath.toLatin1());
    if (ret.errorcode != Library::ErrorCode::FILE_NOT_FOUND)
        return ret;
    libpath = appPath+"/cfg/"+filename;
    qDebug().noquote() << "looking for library '" + libpath + "'";
    ret = library.load(nullptr, libpath.toLatin1());
    if (ret.errorcode != Library::ErrorCode::FILE_NOT_FOUND)
        return ret;

#ifdef FILESDIR
    // Try to load the library from FILESDIR/cfg..
    const QString filesdir = FILESDIR;
    if (!filesdir.isEmpty()) {
        libpath = filesdir+"/cfg/"+filename;
        qDebug().noquote() << "looking for library '" + libpath + "'";
        ret = library.load(nullptr, libpath.toLatin1());
        if (ret.errorcode != Library::ErrorCode::FILE_NOT_FOUND)
            return ret;
        libpath = filesdir+"/"+filename;
        qDebug().noquote() << "looking for library '" + libpath + "'";
        ret = library.load(nullptr, libpath.toLatin1());
        if (ret.errorcode != Library::ErrorCode::FILE_NOT_FOUND)
            return ret;
    }
#endif

    // Try to load the library from the cfg subfolder..
    const QString datadir = getDataDir();
    if (!datadir.isEmpty()) {
        libpath = datadir+"/"+filename;
        qDebug().noquote() << "looking for library '" + libpath + "'";
        ret = library.load(nullptr, libpath.toLatin1());
        if (ret.errorcode != Library::ErrorCode::FILE_NOT_FOUND)
            return ret;
        libpath = datadir+"/cfg/"+filename;
        qDebug().noquote() << "looking for library '" + libpath + "'";
        ret = library.load(nullptr, libpath.toLatin1());
        if (ret.errorcode != Library::ErrorCode::FILE_NOT_FOUND)
            return ret;
    }

    qDebug().noquote() << "library not found: '" + filename + "'";

    return ret;
}

bool MainWindow::tryLoadLibrary(Library &library, const QString& filename)
{
    const Library::Error error = loadLibrary(library, filename);
    if (error.errorcode != Library::ErrorCode::OK) {
        if (error.errorcode == Library::ErrorCode::UNKNOWN_ELEMENT) {
            QMessageBox::information(this, tr("Information"), tr("The library '%1' contains unknown elements:\n%2").arg(filename).arg(error.reason.c_str()));
            return true;
        }

        QString errmsg;
        switch (error.errorcode) {
        case Library::ErrorCode::OK:
            break;
        case Library::ErrorCode::FILE_NOT_FOUND:
            errmsg = tr("File not found");
            break;
        case Library::ErrorCode::BAD_XML:
            errmsg = tr("Bad XML");
            break;
        case Library::ErrorCode::MISSING_ATTRIBUTE:
            errmsg = tr("Missing attribute");
            break;
        case Library::ErrorCode::BAD_ATTRIBUTE_VALUE:
            errmsg = tr("Bad attribute value");