qgsapplication.cpp

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/***************************************************************************
    qgsapplication.cpp - Accessors for application-wide data
     --------------------------------------
    Date                 : 02-Jan-2006
    Copyright            : (C) 2006 by Tom Elwertowski
    Email                : telwertowski at users dot sourceforge dot net
 ***************************************************************************
 *                                                                         *
 *   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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#include "qgsapplication.h"
 
#include "gps/qgsgpsconnectionregistry.h"
#include "layout/qgspagesizeregistry.h"
#include "processing/models/qgsprocessingmodelchilddependency.h"
#include "processing/models/qgsprocessingmodelchildparametersource.h"
#include "processing/qgsprocessingregistry.h"
#include "qgs3drendererregistry.h"
#include "qgs3dsymbolregistry.h"
#include "qgsactionscoperegistry.h"
#include "qgsannotationitemregistry.h"
#include "qgsannotationregistry.h"
#include "qgsapplicationthemeregistry.h"
#include "qgsauthconfigurationstorageregistry.h"
#include "qgsauthmanager.h"
#include "qgsbabelformatregistry.h"
#include "qgsbookmarkmanager.h"
#include "qgscalloutsregistry.h"
#include "qgsclassificationmethodregistry.h"
#include "qgscolorrampimpl.h"
#include "qgscolorschemeregistry.h"
#include "qgsconnectionregistry.h"
#include "qgscoordinatereferencesystemregistry.h"
#include "qgsdataitemproviderregistry.h"
#include "qgsdatetimefieldformatter.h"
#include "qgsdbquerylog.h"
#include "qgsexception.h"
#include "qgsexpression.h"
#include "qgsexternalstorageregistry.h"
#include "qgsfeaturestore.h"
#include "qgsfieldformatterregistry.h"
#include "qgsfontmanager.h"
#include "qgsgeometry.h"
#include "qgsgpsconnection.h"
#include "qgsimagecache.h"
#include "qgsinterval.h"
#include "qgslabelingengineruleregistry.h"
#include "qgslayermetadataproviderregistry.h"
#include "qgslayout.h"
#include "qgslayoutitemregistry.h"
#include "qgslayoutrendercontext.h"
#include "qgslocalizeddatapathregistry.h"
#include "qgslocator.h"
#include "qgslogger.h"
#include "qgsmeshlayer.h"
#include "qgsmessagelog.h"
#include "qgsnetworkaccessmanager.h"
#include "qgsnetworkcontentfetcherregistry.h"
#include "qgsnetworkreply.h"
#include "qgsnewsfeedparser.h"
#include "qgsnumericformatregistry.h"
#include "qgspainteffectregistry.h"
#include "qgsplotregistry.h"
#include "qgspluginlayerregistry.h"
#include "qgspointcloudrendererregistry.h"
#include "qgsprofilesourceregistry.h"
#include "qgsproject.h"
#include "qgsprojectstorageregistry.h"
#include "qgsprojutils.h"
#include "qgsproviderregistry.h"
#include "qgsrasterrendererregistry.h"
#include "qgsreadwritelocker.h"
#include "qgsrecentstylehandler.h"
#include "qgsreferencedgeometry.h"
#include "qgsremappingproxyfeaturesink.h"
#include "qgsrendererregistry.h"
#include "qgsruntimeprofiler.h"
#include "qgsscalebarrendererregistry.h"
#include "qgsselectivemaskingsourceset.h"
#include "qgssensorregistry.h"
#include "qgssensorthingsutils.h"
#include "qgssettings.h"
#include "qgssettingsregistrycore.h"
#include "qgssourcecache.h"
#include "qgssqliteutils.h"
#include "qgsstyle.h"
#include "qgsstylemodel.h"
#include "qgssvgcache.h"
#include "qgssymbollayerregistry.h"
#include "qgssymbollayerutils.h"
#include "qgstaskmanager.h"
#include "qgstiledownloadmanager.h"
#include "qgstiledscenerendererregistry.h"
#include "qgsunittypes.h"
#include "qgsunsetattributevalue.h"
#include "qgsuserprofile.h"
#include "qgsuserprofilemanager.h"
#include "qgsvaliditycheckregistry.h"
 
#include <QAuthenticator>
#include <QDir>
#include <QFile>
#include <QFileInfo>
#include <QFileOpenEvent>
#include <QIcon>
#include <QImageReader>
#include <QLibraryInfo>
#include <QLocale>
#include <QMessageBox>
#include <QPalette>
#include <QPixmap>
#include <QProcess>
#include <QProcessEnvironment>
#include <QRecursiveMutex>
#include <QRegularExpression>
#include <QScreen>
#include <QStandardPaths>
#include <QString>
#include <QStyle>
#include <QTextStream>
#include <QThreadPool>
 
#include "moc_qgsapplication.cpp"
 
using namespace Qt::StringLiterals;
 
const QgsSettingsEntryString *QgsApplication::settingsLocaleUserLocale = new QgsSettingsEntryString( u"userLocale"_s, QgsSettingsTree::sTreeLocale, QString() );
 
const QgsSettingsEntryBool *QgsApplication::settingsLocaleOverrideFlag = new QgsSettingsEntryBool( u"overrideFlag"_s, QgsSettingsTree::sTreeLocale, false );
 
const QgsSettingsEntryString *QgsApplication::settingsLocaleGlobalLocale = new QgsSettingsEntryString( u"globalLocale"_s, QgsSettingsTree::sTreeLocale, QString() );
 
const QgsSettingsEntryBool *QgsApplication::settingsLocaleShowGroupSeparator = new QgsSettingsEntryBool( u"showGroupSeparator"_s, QgsSettingsTree::sTreeLocale, false );
 
const QgsSettingsEntryStringList *QgsApplication::settingsSearchPathsForSVG = new QgsSettingsEntryStringList( u"searchPathsForSVG"_s, QgsSettingsTree::sTreeSvg, QStringList() );
 
const QgsSettingsEntryInteger *QgsApplication::settingsConnectionPoolMaximumConcurrentConnections = new QgsSettingsEntryInteger( u"connection-pool-maximum-concurrent-connections"_s, QgsSettingsTree::sTreeCore, 4, QObject::tr( "Maximum number of concurrent connections per connection pool" ), Qgis::SettingsOptions(), 4, 999 );
 
#ifndef Q_OS_WIN
#include <netinet/in.h>
#include <pwd.h>
#else
#include <winsock.h>
#include <windows.h>
#include <lmcons.h>
#define SECURITY_WIN32
#include <security.h>
#ifdef _MSC_VER
#pragma comment( lib, "Secur32.lib" )
#endif
#endif
 
#include "qgsconfig.h"
 
#include <gdal.h>
#include <ogr_api.h>
#include <cpl_conv.h> // for setting gdal options
#include <sqlite3.h>
#include <mutex>
 
#include <proj.h>
 
#if defined(Q_OS_LINUX)
#include <sys/sysinfo.h>
#endif
 
#define CONN_POOL_MAX_CONCURRENT_CONNS      4
 
struct QgsApplication::ApplicationMembers
{
  std::unique_ptr<QgsSettingsRegistryCore > mSettingsRegistryCore;
  std::unique_ptr<QgsCoordinateReferenceSystemRegistry > mCrsRegistry;
  std::unique_ptr<Qgs3DRendererRegistry > m3DRendererRegistry;
  std::unique_ptr<Qgs3DSymbolRegistry > m3DSymbolRegistry;
  std::unique_ptr<QgsActionScopeRegistry > mActionScopeRegistry;
  std::unique_ptr<QgsAnnotationRegistry > mAnnotationRegistry;
  std::unique_ptr<QgsApplicationThemeRegistry > mApplicationThemeRegistry;
  std::unique_ptr<QgsColorSchemeRegistry > mColorSchemeRegistry;
  std::unique_ptr<QgsLocalizedDataPathRegistry > mLocalizedDataPathRegistry;
  std::unique_ptr<QgsNumericFormatRegistry > mNumericFormatRegistry;
  std::unique_ptr<QgsFieldFormatterRegistry > mFieldFormatterRegistry;
  std::unique_ptr<QgsGpsConnectionRegistry > mGpsConnectionRegistry;
  std::unique_ptr<QgsBabelFormatRegistry > mGpsBabelFormatRegistry;
  std::unique_ptr<QgsNetworkContentFetcherRegistry > mNetworkContentFetcherRegistry;
  std::unique_ptr<QgsScaleBarRendererRegistry > mScaleBarRendererRegistry;
  std::unique_ptr<QgsLabelingEngineRuleRegistry > mLabelingEngineRuleRegistry;
  std::unique_ptr<QgsValidityCheckRegistry > mValidityCheckRegistry;
  std::unique_ptr<QgsMessageLog > mMessageLog;
  std::unique_ptr<QgsPaintEffectRegistry > mPaintEffectRegistry;
  std::unique_ptr<QgsPluginLayerRegistry > mPluginLayerRegistry;
  std::unique_ptr<QgsClassificationMethodRegistry > mClassificationMethodRegistry;
  std::unique_ptr<QgsProcessingRegistry > mProcessingRegistry;
  std::unique_ptr<QgsConnectionRegistry > mConnectionRegistry;
  std::unique_ptr<QgsProjectStorageRegistry > mProjectStorageRegistry;
  std::unique_ptr<QgsLayerMetadataProviderRegistry > mLayerMetadataProviderRegistry;
  std::unique_ptr<QgsExternalStorageRegistry > mExternalStorageRegistry;
  std::unique_ptr<QgsProfileSourceRegistry > mProfileSourceRegistry;
  std::unique_ptr<QgsPageSizeRegistry > mPageSizeRegistry;
  std::unique_ptr<QgsRasterRendererRegistry > mRasterRendererRegistry;
  std::unique_ptr<QgsRendererRegistry > mRendererRegistry;
  std::unique_ptr<QgsPointCloudRendererRegistry > mPointCloudRendererRegistry;
  std::unique_ptr<QgsTiledSceneRendererRegistry > mTiledSceneRendererRegistry;
  std::unique_ptr<QgsSvgCache > mSvgCache;
  std::unique_ptr<QgsImageCache > mImageCache;
  std::unique_ptr<QgsSourceCache > mSourceCache;
  std::unique_ptr<QgsSymbolLayerRegistry > mSymbolLayerRegistry;
  std::unique_ptr<QgsCalloutRegistry > mCalloutRegistry;
  std::unique_ptr<QgsTaskManager > mTaskManager;
  std::unique_ptr<QgsLayoutItemRegistry > mLayoutItemRegistry;
  std::unique_ptr<QgsAnnotationItemRegistry > mAnnotationItemRegistry;
  std::unique_ptr<QgsSensorRegistry > mSensorRegistry;
  std::unique_ptr<QgsPlotRegistry > mPlotRegistry;
  std::unique_ptr<QgsBookmarkManager > mBookmarkManager;
  std::unique_ptr<QgsTileDownloadManager > mTileDownloadManager;
  std::unique_ptr<QgsStyleModel > mStyleModel;
  std::unique_ptr<QgsRecentStyleHandler > mRecentStyleHandler;
  std::unique_ptr<QgsDatabaseQueryLog > mQueryLogger;
  std::unique_ptr<QgsFontManager > mFontManager;
  QString mNullRepresentation;
  QStringList mSvgPathCache;
  bool mSvgPathCacheValid = false;
 
  ApplicationMembers();
  ~ApplicationMembers();
};
 
 
QObject *ABISYM( QgsApplication::mFileOpenEventReceiver ) = nullptr;
bool ABISYM( QgsApplication::mInitialized ) = false;
bool ABISYM( QgsApplication::mRunningFromBuildDir ) = false;
const char *QgsApplication::QGIS_ORGANIZATION_NAME = "QGIS";
const char *QgsApplication::QGIS_ORGANIZATION_DOMAIN = "qgis.org";
const char *QgsApplication::QGIS_APPLICATION_NAME = "QGIS3";
QgsApplication::ApplicationMembers *QgsApplication::sApplicationMembers = nullptr;
QgsAuthManager *QgsApplication::sAuthManager = nullptr;
int ABISYM( QgsApplication::sMaxThreads ) = -1;
 
Q_GLOBAL_STATIC( QStringList, sFileOpenEventList )
Q_GLOBAL_STATIC( QString, sPrefixPath )
Q_GLOBAL_STATIC( QString, sPluginPath )
Q_GLOBAL_STATIC( QString, sPkgDataPath )
Q_GLOBAL_STATIC( QString, sLibraryPath )
Q_GLOBAL_STATIC( QString, sLibexecPath )
Q_GLOBAL_STATIC( QString, sQmlImportPath )
Q_GLOBAL_STATIC( QString, sThemeName )
Q_GLOBAL_STATIC( QString, sProfilePath )
 
Q_GLOBAL_STATIC( QStringList, sDefaultSvgPaths )
Q_GLOBAL_STATIC( QgsStringMap, sSystemEnvVars )
Q_GLOBAL_STATIC( QString, sConfigPath )
 
Q_GLOBAL_STATIC( QString, sBuildSourcePath )
#if defined(_MSC_VER) && !defined(USING_NMAKE) && !defined(USING_NINJA)
Q_GLOBAL_STATIC( QString, sCfgIntDir )
#endif
Q_GLOBAL_STATIC( QString, sBuildOutputPath )
Q_GLOBAL_STATIC( QStringList, sGdalSkipList )
Q_GLOBAL_STATIC( QStringList, sDeferredSkippedGdalDrivers )
Q_GLOBAL_STATIC( QString, sAuthDbDirPath )
Q_GLOBAL_STATIC( QString, sAuthDbUri )
 
Q_GLOBAL_STATIC( QString, sUserName )
Q_GLOBAL_STATIC( QString, sUserFullName )
Q_GLOBAL_STATIC_WITH_ARGS( QString, sPlatformName, ( "external" ) )
Q_GLOBAL_STATIC( QString, sApplicationFullName )
Q_GLOBAL_STATIC( QString, sTranslation )
 
Q_GLOBAL_STATIC( QTemporaryDir, sIconCacheDir )
 
QgsApplication::QgsApplication( int &argc, char **argv, bool GUIenabled, const QString &profileFolder, const QString &platformName )
  : QApplication( argc, argv, GUIenabled )
{
  *sPlatformName() = platformName;
 
  connect( instance(), &QgsApplication::localeChanged, &QgsDateTimeFieldFormatter::applyLocaleChange );
 
  // Delay application members initialization in desktop app (In desktop app, profile folder is not known at this point)
  if ( platformName != "desktop"_L1 )
  {
    mApplicationMembers = std::make_unique<ApplicationMembers>();
    try
    {
      mApplicationMembers->mSettingsRegistryCore->migrateOldSettings();
    }
    catch ( QgsSettingsException &e )
    {
      QgsDebugError( u"Error migrating old settings: %1"_s.arg( e.what() ) );
    }
  }
  else
  {
    *sProfilePath() = profileFolder;
  }
 
}
 
void registerMetaTypes()
{
  qRegisterMetaType<QgsGeometry::Error>( "QgsGeometry::Error" );
  qRegisterMetaType<QgsDatabaseQueryLogEntry>( "QgsDatabaseQueryLogEntry" );
  qRegisterMetaType<QgsProcessingFeatureSourceDefinition>( "QgsProcessingFeatureSourceDefinition" );
  qRegisterMetaType<QgsProcessingOutputLayerDefinition>( "QgsProcessingOutputLayerDefinition" );
  qRegisterMetaType<Qgis::LayoutUnit>( "Qgis::LayoutUnit" );
  qRegisterMetaType<QgsUnsetAttributeValue>( "QgsUnsetAttributeValue" );
  qRegisterMetaType<QgsFeatureId>( "QgsFeatureId" );
  qRegisterMetaType<QgsFields>( "QgsFields" );
  qRegisterMetaType<QgsFeatureIds>( "QgsFeatureIds" );
  qRegisterMetaType<QgsProperty>( "QgsProperty" );
  qRegisterMetaType<QgsFeatureStoreList>( "QgsFeatureStoreList" );
  qRegisterMetaType<Qgis::MessageLevel>( "Qgis::MessageLevel" );
  qRegisterMetaType<Qgis::BrowserItemState>( "Qgis::BrowserItemState" );
  qRegisterMetaType<Qgis::GpsFixStatus>( "Qgis::GpsFixStatus" );
  qRegisterMetaType<QgsReferencedRectangle>( "QgsReferencedRectangle" );
  qRegisterMetaType<QgsReferencedPointXY>( "QgsReferencedPointXY" );
  qRegisterMetaType<QgsReferencedGeometry>( "QgsReferencedGeometry" );
  qRegisterMetaType<Qgis::LayoutRenderFlags>( "Qgis::LayoutRenderFlags" );
  qRegisterMetaType<QgsStyle::StyleEntity>( "QgsStyle::StyleEntity" );
  qRegisterMetaType<QgsCoordinateReferenceSystem>( "QgsCoordinateReferenceSystem" );
  qRegisterMetaType<QgsAuthManager::MessageLevel>( "QgsAuthManager::MessageLevel" );
  qRegisterMetaType<QgsNetworkRequestParameters>( "QgsNetworkRequestParameters" );
  qRegisterMetaType<QgsNetworkReplyContent>( "QgsNetworkReplyContent" );
  qRegisterMetaType<QgsFeature>( "QgsFeature" );
  qRegisterMetaType<QgsGeometry>( "QgsGeometry" );
  qRegisterMetaType<QgsInterval>( "QgsInterval" );
  qRegisterMetaType<QgsRectangle>( "QgsRectangle" );
  qRegisterMetaType<QgsPointXY>( "QgsPointXY" );
  qRegisterMetaType<QgsPoint>( "QgsPoint" );
  qRegisterMetaType<QgsDatumTransform::GridDetails>( "QgsDatumTransform::GridDetails" );
  qRegisterMetaType<QgsDatumTransform::TransformDetails>( "QgsDatumTransform::TransformDetails" );
  qRegisterMetaType<QgsNewsFeedParser::Entry>( "QgsNewsFeedParser::Entry" );
  qRegisterMetaType<QgsRectangle>( "QgsRectangle" );
  qRegisterMetaType<QgsLocatorResult>( "QgsLocatorResult" );
  qRegisterMetaType<QgsGradientColorRamp>( "QgsGradientColorRamp" );
  qRegisterMetaType<QgsProcessingModelChildParameterSource>( "QgsProcessingModelChildParameterSource" );
  qRegisterMetaType<QgsRemappingSinkDefinition>( "QgsRemappingSinkDefinition" );
  qRegisterMetaType<QgsProcessingModelChildDependency>( "QgsProcessingModelChildDependency" );
  qRegisterMetaType<QgsTextFormat>( "QgsTextFormat" );
  qRegisterMetaType<QPainter::CompositionMode>( "QPainter::CompositionMode" );
  qRegisterMetaType<QgsDateTimeRange>( "QgsDateTimeRange" );
  qRegisterMetaType<QgsDoubleRange>( "QgsDoubleRange" );
  qRegisterMetaType<QgsIntRange>( "QgsIntRange" );
  qRegisterMetaType<QList<QgsMapLayer *>>( "QList<QgsMapLayer*>" );
  qRegisterMetaType<QMap<QNetworkRequest::Attribute, QVariant>>( "QMap<QNetworkRequest::Attribute,QVariant>" );
  qRegisterMetaType<QMap<QNetworkRequest::KnownHeaders, QVariant>>( "QMap<QNetworkRequest::KnownHeaders,QVariant>" );
  qRegisterMetaType<QList<QNetworkReply::RawHeaderPair>>( "QList<QNetworkReply::RawHeaderPair>" );
  qRegisterMetaType<QNetworkReply::NetworkError>( "QNetworkReply::NetworkError" );
  qRegisterMetaType< QAuthenticator * >( "QAuthenticator*" );
  qRegisterMetaType< QgsGpsInformation >( "QgsGpsInformation" );
  qRegisterMetaType< QgsSensorThingsExpansionDefinition >( "QgsSensorThingsExpansionDefinition" );
  qRegisterMetaType< QTimeZone >( "QTimeZone" );
  qRegisterMetaType< QgsSelectiveMaskingSourceSet >( "QgsSelectiveMaskingSourceSet" );
};
 
void QgsApplication::init( QString profileFolder )
{
  // Initialize application members in desktop app (at this point, profile folder is known)
  if ( platform() == "desktop"_L1 )
  {
    instance()->mApplicationMembers = std::make_unique<ApplicationMembers>();
    try
    {
      instance()->mApplicationMembers->mSettingsRegistryCore->migrateOldSettings();
    }
    catch ( QgsSettingsException &e )
    {
      QgsDebugError( u"Error migrating old settings: %1"_s.arg( e.what() ) );
    }
  }
 
  if ( profileFolder.isEmpty() )
  {
    if ( getenv( "QGIS_CUSTOM_CONFIG_PATH" ) )
    {
      profileFolder = getenv( "QGIS_CUSTOM_CONFIG_PATH" );
    }
    else
    {
      profileFolder = QStandardPaths::standardLocations( QStandardPaths::AppDataLocation ).value( 0 );
    }
    // This will normally get here for custom scripts that use QgsApplication.
    // This doesn't get this hit for QGIS Desktop because we setup the profile via main
    QString rootProfileFolder = QgsUserProfileManager::resolveProfilesFolder( profileFolder );
    QgsUserProfileManager manager( rootProfileFolder );
    std::unique_ptr< QgsUserProfile > profile = manager.getProfile();
    profileFolder = profile->folder();
  }
 
  *sProfilePath() = profileFolder;
 
  static std::once_flag sMetaTypesRegistered;
  std::call_once( sMetaTypesRegistered, registerMetaTypes );
 
  ( void ) resolvePkgPath();
 
  if ( ABISYM( mRunningFromBuildDir ) )
  {
    // we run from source directory - not installed to destination (specified prefix)
    *sPrefixPath() = QString(); // set invalid path
#if defined(_MSC_VER) && !defined(USING_NMAKE) && !defined(USING_NINJA)
    setPluginPath( *sBuildOutputPath() + '/' + QString( QGIS_PLUGIN_SUBDIR ) + '/' + *sCfgIntDir() );
#else
    setPluginPath( *sBuildOutputPath() + '/' + QStringLiteral( QGIS_PLUGIN_SUBDIR ) );
#endif
    setPkgDataPath( *sBuildOutputPath() + u"/data"_s ); // in buildDir/data - used for: doc, resources, svg
    *sLibraryPath() = *sBuildOutputPath() + '/' + QGIS_LIB_SUBDIR + '/';
#if defined(_MSC_VER) && !defined(USING_NMAKE) && !defined(USING_NINJA)
    *sLibexecPath() = *sBuildOutputPath() + '/' + QGIS_LIBEXEC_SUBDIR + '/' + *sCfgIntDir() + '/';
#else
    *sLibexecPath() = *sBuildOutputPath() + '/' + QGIS_LIBEXEC_SUBDIR + '/';
#endif
#if defined( HAVE_QUICK )
    *sQmlImportPath() = *sBuildOutputPath() + '/' + QGIS_QML_SUBDIR + '/';
#endif
  }
  else
  {
    char *prefixPath = getenv( "QGIS_PREFIX_PATH" );
    if ( !prefixPath )
    {
      if ( sPrefixPath()->isNull() )
      {
#if defined(Q_OS_WIN) || defined(Q_OS_MACOS) && !defined(QGIS_MAC_BUNDLE)
        setPrefixPath( applicationDirPath(), true );
#elif defined(QGIS_MAC_BUNDLE)
        QDir myDir( applicationDirPath() + "/../.."_L1 );
        setPrefixPath( myDir.absolutePath(), true );
#elif defined(ANDROID)
        // this is "/data/data/org.qgis.qgis" in android
        QDir myDir( QDir::homePath() );
        myDir.cdUp();
        QString myPrefix = myDir.absolutePath();
        setPrefixPath( myPrefix, true );
#else
        QDir myDir( applicationDirPath() );
        // Fix for server which is one level deeper in /usr/lib/cgi-bin
        if ( applicationDirPath().contains( u"cgi-bin"_s ) )
        {
          myDir.cdUp();
        }
        myDir.cdUp(); // Go from /usr/bin or /usr/lib (for server) to /usr
        QString myPrefix = myDir.absolutePath();
        setPrefixPath( myPrefix, true );
#endif
      }
    }
    else
    {
      setPrefixPath( prefixPath, true );
    }
  }
 
  *sConfigPath() = profileFolder + '/'; // make sure trailing slash is included
  *sDefaultSvgPaths() << qgisSettingsDirPath() + u"svg/"_s;
 
  // Determine the auth DB URI, the first match wins:
  // 1 - get it from QGIS_AUTH_DB_URI environment variable
  // 2 - get it from QGIS_AUTH_DB_DIR_PATH environment variable, assume QSQLITE driver and add "qgis-auth.db"
  // 3 - use the default path from settings dir path, assume QSQLITE and add "qgis-auth.db"
  *sAuthDbDirPath() = qgisSettingsDirPath();
 
  if ( getenv( "QGIS_AUTH_DB_DIR_PATH" ) )
  {
    setAuthDatabaseDirPath( getenv( "QGIS_AUTH_DB_DIR_PATH" ) );
    sAuthDbUri()->clear();
  }
 
  if ( getenv( "QGIS_AUTH_DB_URI" ) )
  {
    *sAuthDbUri() = getenv( "QGIS_AUTH_DB_URI" );
  }
 
  // Default to sAuthDbDirPath
  if ( sAuthDbUri->isEmpty() )
  {
    *sAuthDbUri() = u"QSQLITE://"_s + *sAuthDbDirPath() + u"qgis-auth.db"_s;
  }
 
  // force use of OpenGL renderer for Qt3d.
  qputenv( "QT3D_RENDERER", "opengl" );
 
  // store system environment variables passed to application, before they are adjusted
  QMap<QString, QString> systemEnvVarMap;
  QString passfile( u"QGIS_AUTH_PASSWORD_FILE"_s ); // QString, for comparison
 
  const auto systemEnvironment = QProcessEnvironment::systemEnvironment().toStringList();
  for ( const QString &varStr : systemEnvironment )
  {
    int pos = varStr.indexOf( '='_L1 );
    if ( pos == -1 )
      continue;
    QString varStrName = varStr.left( pos );
    QString varStrValue = varStr.mid( pos + 1 );
    if ( varStrName != passfile )
    {
      systemEnvVarMap.insert( varStrName, varStrValue );
    }
  }
  *sSystemEnvVars() = systemEnvVarMap;
 
  // append local user-writable folder as a proj search path
  QStringList currentProjSearchPaths = QgsProjUtils::searchPaths();
  currentProjSearchPaths.append( qgisSettingsDirPath() + u"proj"_s );
#ifdef Q_OS_MACOS
  // Set bundled proj data path as env var, so it's also available for pyproj and subprocesses (e.g. processing algorithms)
  const QString projData( QDir::cleanPath( pkgDataPath().append( "/proj" ) ) );
  if ( QFile::exists( projData ) )
  {
    qputenv( "PROJ_DATA", projData.toUtf8() );
    currentProjSearchPaths.append( projData );
  }
#endif // Q_OS_MACOS
 
  char **newPaths = new char *[currentProjSearchPaths.length()];
  for ( int i = 0; i < currentProjSearchPaths.count(); ++i )
  {
    newPaths[i] = CPLStrdup( currentProjSearchPaths.at( i ).toUtf8().constData() );
  }
  proj_context_set_search_paths( nullptr, currentProjSearchPaths.count(), newPaths );
  for ( int i = 0; i < currentProjSearchPaths.count(); ++i )
  {
    CPLFree( newPaths[i] );
  }
  delete [] newPaths;
 
  // allow Qt to search for Qt plugins (e.g. sqldrivers) in our plugin directory
  QCoreApplication::addLibraryPath( pluginPath() );
 
  // the default of 256 is not enough for QGIS
  QImageReader::setAllocationLimit( 512 );
 
  {
    QgsScopedRuntimeProfile profile( tr( "Load user fonts" ) );
    fontManager()->installUserFonts();
  }
 
  // set max. thread count to -1
  // this should be read from QgsSettings but we don't know where they are at this point
  // so we read actual value in main.cpp
  ABISYM( sMaxThreads ) = -1;
 
  {
    QgsScopedRuntimeProfile profile( tr( "Load color schemes" ) );
    colorSchemeRegistry()->addDefaultSchemes();
    colorSchemeRegistry()->initStyleScheme();
  }
 
  {
    QgsScopedRuntimeProfile profile( tr( "Load bookmarks" ) );
    bookmarkManager()->initialize( QgsApplication::qgisSettingsDirPath() + "/bookmarks.xml" );
  }
 
  // trigger creation of default style, but defer initialization until
  // it's actually required
  QgsStyle *defaultStyle = QgsStyle::defaultStyle( false );
  if ( !members()->mStyleModel )
    members()->mStyleModel = std::make_unique<QgsStyleModel>( defaultStyle );
 
  ABISYM( mInitialized ) = true;
}
 
 
void QgsApplication::installTranslators()
{
  // Remove translators if any are already installed
  if ( mQgisTranslator )
  {
    removeTranslator( mQgisTranslator.get() );
    mQgisTranslator.reset( );
 
  }
  if ( mQtTranslator )
  {
    removeTranslator( mQtTranslator.get() );
    mQtTranslator.reset( );
 
  }
  if ( mQtBaseTranslator )
  {
    removeTranslator( mQtBaseTranslator.get() );
    mQtBaseTranslator.reset( );
 
  }
 
  if ( *sTranslation() != "C"_L1 )
  {
    mQgisTranslator = std::make_unique<QTranslator>( this );
    if ( mQgisTranslator->load( u"qgis_"_s + *sTranslation(), i18nPath() ) )
    {
      installTranslator( mQgisTranslator.get() );
    }
    else
    {
      QgsDebugMsgLevel( u"loading of qgis translation failed %1/qgis_%2"_s.arg( i18nPath(), *sTranslation() ), 2 );
    }
 
    /* Translation file for Qt.
     * The strings from the QMenuBar context section are used by Qt/Mac to shift
     * the About, Preferences and Quit items to the Mac Application menu.
     * These items must be translated identically in both qt_ and qgis_ files.
     */
    QString qtTranslationsPath = QLibraryInfo::location( QLibraryInfo::TranslationsPath );
#ifdef __MINGW32__
    QString prefix = QDir( QString( "%1/../" ).arg( QApplication::applicationDirPath() ) ).absolutePath();
    qtTranslationsPath = prefix + qtTranslationsPath.mid( QLibraryInfo::location( QLibraryInfo::PrefixPath ).length() );
#endif
 
    mQtTranslator = std::make_unique<QTranslator>( this );
    if ( mQtTranslator->load( u"qt_"_s + *sTranslation(), qtTranslationsPath ) )
    {
      installTranslator( mQtTranslator.get() );
    }
    else
    {
      QgsDebugMsgLevel( u"loading of qt translation failed %1/qt_%2"_s.arg( qtTranslationsPath, *sTranslation() ), 2 );
    }
 
    mQtBaseTranslator = std::make_unique<QTranslator>( this );
    if ( mQtBaseTranslator->load( u"qtbase_"_s + *sTranslation(), qtTranslationsPath ) )
    {
      installTranslator( mQtBaseTranslator.get() );
    }
    else
    {
      QgsDebugMsgLevel( u"loading of qtbase translation failed %1/qt_%2"_s.arg( qtTranslationsPath, *sTranslation() ), 2 );
    }
  }
}
 
QgsApplication::~QgsApplication()
{
  if ( mApplicationMembers )
  {
    try
    {
      mApplicationMembers->mSettingsRegistryCore->backwardCompatibility();
    }
    catch ( QgsSettingsException &e )
    {
      QgsDebugError( u"An error occurred while performing backwards compatibility for settings: %1"_s.arg( e.what() ) );
    }
  }
 
  // we do this here as well as in exitQgis() -- it's safe to call as often as we want,
  // and there's just a *chance* that someone hasn't properly called exitQgis prior to
  // this destructor...
  invalidateCaches();
}
 
void QgsApplication::invalidateCaches()
{
  // invalidate coordinate cache while the PROJ context held by the thread-locale
  // QgsProjContextStore object is still alive. Otherwise if this later object
  // is destroyed before the static variables of the cache, we might use freed memory.
  QgsCoordinateTransform::invalidateCache( true );
  QgsCoordinateReferenceSystem::invalidateCache( true );
  QgsEllipsoidUtils::invalidateCache( true );
}
 
QgsApplication *QgsApplication::instance()
{
  return qobject_cast<QgsApplication *>( QCoreApplication::instance() );
}
 
bool QgsApplication::event( QEvent *event )
{
  bool done = false;
  if ( event->type() == QEvent::FileOpen )
  {
    // handle FileOpen event (double clicking a file icon in Mac OS X Finder)
    if ( ABISYM( mFileOpenEventReceiver ) )
    {
      // Forward event to main window.
      done = notify( ABISYM( mFileOpenEventReceiver ), event );
    }
    else
    {
      // Store filename because receiver has not registered yet.
      // If QGIS has been launched by double clicking a file icon, FileOpen will be
      // the first event; the main window is not yet ready to handle the event.
      sFileOpenEventList()->append( static_cast<QFileOpenEvent *>( event )->file() );
      done = true;
    }
  }
  else
  {
    // pass other events to base class
    done = QApplication::event( event );
  }
  return done;
}
 
bool QgsApplication::notify( QObject *receiver, QEvent *event )
{
  bool done = false;
  // Crashes  in customization (especially on Mac), if we're not in the main/UI thread, see #5597
  if ( thread() == receiver->thread() )
    emit preNotify( receiver, event, &done );
 
  if ( done )
    return true;
 
  // Send event to receiver and catch unhandled exceptions
  done = true;
  try
  {
    done = QApplication::notify( receiver, event );
  }
  catch ( QgsException &e )
  {
    qCritical() << "Caught unhandled QgsException: " << e.what();
    if ( qApp->thread() == QThread::currentThread() )
      QMessageBox::critical( activeWindow(), tr( "Exception" ), e.what() );
  }
  catch ( std::exception &e )
  {
    qCritical() << "Caught unhandled std::exception: " << e.what();
    if ( qApp->thread() == QThread::currentThread() )
      QMessageBox::critical( activeWindow(), tr( "Exception" ), e.what() );
  }
  catch ( ... )
  {
    qCritical() << "Caught unhandled unknown exception";
    if ( qApp->thread() == QThread::currentThread() )
      QMessageBox::critical( activeWindow(), tr( "Exception" ), tr( "unknown exception" ) );
  }
 
  return done;
}
 
QgsRuntimeProfiler *QgsApplication::profiler()
{
  return QgsRuntimeProfiler::threadLocalInstance();
}
 
void QgsApplication::setFileOpenEventReceiver( QObject *receiver )
{
  // Set receiver for FileOpen events
  ABISYM( mFileOpenEventReceiver ) = receiver;
  // Propagate any events collected before the receiver has registered.
  if ( sFileOpenEventList()->count() > 0 )
  {
    const QStringList fileOpenEventList = *sFileOpenEventList();
    for ( const QString &file : fileOpenEventList )
    {
      QFileOpenEvent foe( file );
      QgsApplication::sendEvent( ABISYM( mFileOpenEventReceiver ), &foe );
    }
    sFileOpenEventList()->clear();
  }
}
 
void QgsApplication::setPrefixPath( const QString &prefixPath, bool useDefaultPaths )
{
  *sPrefixPath() = prefixPath;
#if defined(Q_OS_WIN)
  if ( sPrefixPath()->endsWith( "/bin" ) )
  {
    sPrefixPath()->chop( 4 );
  }
#endif
  if ( useDefaultPaths && !ABISYM( mRunningFromBuildDir ) )
  {
    setPluginPath( *sPrefixPath() + '/' + QStringLiteral( QGIS_PLUGIN_SUBDIR ) );
    setPkgDataPath( *sPrefixPath() + '/' + QStringLiteral( QGIS_DATA_SUBDIR ) );
  }
  *sLibraryPath() = *sPrefixPath() + '/' + QGIS_LIB_SUBDIR + '/';
  *sLibexecPath() = *sPrefixPath() + '/' + QGIS_LIBEXEC_SUBDIR + '/';
#if defined( HAVE_QUICK )
  *sQmlImportPath() = *sPrefixPath() + '/' + QGIS_QML_SUBDIR + '/';
#endif
}
 
void QgsApplication::setPluginPath( const QString &pluginPath )
{
  *sPluginPath() = pluginPath;
}
 
void QgsApplication::setPkgDataPath( const QString &pkgDataPath )
{
  *sPkgDataPath() = pkgDataPath;
 
  QString mySvgPath = pkgDataPath + u"/svg/"_s;
 
  // avoid duplicate entries
  if ( !sDefaultSvgPaths()->contains( mySvgPath ) )
    *sDefaultSvgPaths() << mySvgPath;
}
 
void QgsApplication::setDefaultSvgPaths( const QStringList &pathList )
{
  *sDefaultSvgPaths() = pathList;
}
 
void QgsApplication::setAuthDatabaseDirPath( const QString &authDbDirPath )
{
  QFileInfo fi( authDbDirPath );
  if ( fi.exists() && fi.isDir() && fi.isWritable() )
  {
    *sAuthDbDirPath() = fi.canonicalFilePath() + QDir::separator();
  }
}
 
QString QgsApplication::prefixPath()
{
#if 0
  if ( ABISYM( mRunningFromBuildDir ) )
  {
    static bool sOnce = true;
    if ( sOnce )
    {
      QgsMessageLogNotifyBlocker blockNotifications;
      ( void ) blockNotifications;
      qWarning( "!!! prefix path was requested, but it is not valid - we do not run from installed path !!!" );
    }
    sOnce = false;
  }
#endif
 
  return *sPrefixPath();
}
QString QgsApplication::pluginPath()
{
  return *sPluginPath();
}
 
QString QgsApplication::pkgDataPath()
{
  if ( sPkgDataPath()->isNull() )
    return resolvePkgPath();
  else
    return *sPkgDataPath();
}
 
QString QgsApplication::defaultThemePath()
{
  return u":/images/themes/default/"_s;
}
QString QgsApplication::activeThemePath()
{
  QString usersThemes = userThemesFolder() + QDir::separator() + themeName() + QDir::separator() + "icons/";
  QDir dir( usersThemes );
  if ( dir.exists() )
  {
    return usersThemes;
  }
  else
  {
    QString defaultThemes = defaultThemesFolder() + QDir::separator() + themeName() + QDir::separator() + "icons/";
    return defaultThemes;
  }
}
 
QString QgsApplication::appIconPath()
{
  return iconsPath() + u"qgis-icon-60x60.png"_s;
}
 
int QgsApplication::maxThreads()
{
  return ABISYM( sMaxThreads );
}
 
QString QgsApplication::iconPath( const QString &iconFile )
{
  // try active theme
  QString path = activeThemePath();
  if ( QFile::exists( path + iconFile ) )
    return path + iconFile;
 
  // use default theme
  return defaultThemePath() + iconFile;
}
 
QIcon QgsApplication::getThemeIcon( const QString &name, const QColor &fillColor, const QColor &strokeColor )
{
  const QString cacheKey = ( name.startsWith( '/' ) ? name.mid( 1 ) : name )
                           + ( fillColor.isValid() ? u"_%1"_s.arg( fillColor.name( QColor::HexArgb ).mid( 1 ) ) :  QString() )
                           + ( strokeColor.isValid() ? u"_%1"_s.arg( strokeColor.name( QColor::HexArgb ).mid( 1 ) ) : QString() );
  QgsApplication *app = instance();
  if ( app && app->mIconCache.contains( cacheKey ) )
    return app->mIconCache.value( cacheKey );
 
  QIcon icon;
  const bool colorBased = fillColor.isValid() || strokeColor.isValid();
 
  auto iconFromColoredSvg = [fillColor, strokeColor, cacheKey]( const QString & path ) -> QIcon
  {
    // sizes are unused here!
    const QByteArray svgContent = QgsApplication::svgCache()->svgContent( path, 16, fillColor, strokeColor, 1, 1 );
 
    const QString iconPath = sIconCacheDir()->filePath( cacheKey + u".svg"_s );
    if ( const QDir dir = QFileInfo( iconPath ).dir(); !dir.exists() )
    {
      dir.mkpath( "." );
    }
 
    QFile f( iconPath );
    if ( f.open( QFile::WriteOnly | QFile::Truncate ) )
    {
      f.write( svgContent );
      f.close();
    }
    else
    {
      QgsDebugError( u"Could not create colorized icon svg at %1"_s.arg( iconPath ) );
      return QIcon();
    }
 
    return QIcon( f.fileName() );
  };
 
  QString preferredPath = activeThemePath() + QDir::separator() + name;
  QString defaultPath = defaultThemePath() + QDir::separator() + name;
  if ( QFile::exists( preferredPath ) )
  {
    if ( colorBased )
    {
      icon = iconFromColoredSvg( preferredPath );
    }
    else
    {
      icon = QIcon( preferredPath );
    }
  }
  else if ( QFile::exists( defaultPath ) )
  {
    //could still return an empty icon if it
    //doesn't exist in the default theme either!
    if ( colorBased )
    {
      icon = iconFromColoredSvg( defaultPath );
    }
    else
    {
      icon = QIcon( defaultPath );
    }
  }
  else
  {
    icon = QIcon();
  }
 
  if ( app )
    app->mIconCache.insert( cacheKey, icon );
  return icon;
}
 
QCursor QgsApplication::getThemeCursor( Cursor cursor )
{
  QgsApplication *app = instance();
  if ( app && app->mCursorCache.contains( cursor ) )
    return app->mCursorCache.value( cursor );
 
  // All calculations are done on 32x32 icons
  // Defaults to center, individual cursors may override
  int activeX = 16;
  int activeY = 16;
 
  QString name;
  switch ( cursor )
  {
    case ZoomIn:
      name = u"mZoomIn.svg"_s;
      activeX = 13;
      activeY = 13;
      break;
    case ZoomOut:
      name = u"mZoomOut.svg"_s;
      activeX = 13;
      activeY = 13;
      break;
    case Identify:
      activeX = 3;
      activeY = 6;
      name = u"mIdentify.svg"_s;
      break;
    case CrossHair:
      name = u"mCrossHair.svg"_s;
      break;
    case CapturePoint:
      name = u"mCapturePoint.svg"_s;
      break;
    case Select:
      name = u"mSelect.svg"_s;
      activeX = 6;
      activeY = 6;
      break;
    case Sampler:
      activeX = 5;
      activeY = 5;
      name = u"mSampler.svg"_s;
      break;
      // No default
  }
  // It should never get here!
  Q_ASSERT( ! name.isEmpty( ) );
 
  QIcon icon = getThemeIcon( u"cursors"_s + QDir::separator() + name );
  QCursor cursorIcon;
  // Check if an icon exists for this cursor (the O.S. default cursor will be used if it does not)
  if ( ! icon.isNull( ) )
  {
    // Apply scaling
    float scale = Qgis::UI_SCALE_FACTOR * QgsApplication::fontMetrics().height() / 32.0;
    cursorIcon = QCursor( icon.pixmap( std::ceil( scale * 32 ), std::ceil( scale * 32 ) ), std::ceil( scale * activeX ), std::ceil( scale * activeY ) );
  }
  if ( app )
    app->mCursorCache.insert( cursor, cursorIcon );
  return cursorIcon;
}
 
// TODO: add some caching mechanism ?
QPixmap QgsApplication::getThemePixmap( const QString &name, const QColor &foreColor, const QColor &backColor, const int size )
{
  const QString preferredPath = activeThemePath() + QDir::separator() + name;
  const QString defaultPath = defaultThemePath() + QDir::separator() + name;
  const QString path = QFile::exists( preferredPath ) ? preferredPath : defaultPath;
  if ( foreColor.isValid() || backColor.isValid() )
  {
    bool fitsInCache = false;
    const QImage image = svgCache()->svgAsImage( path, size, backColor, foreColor, 1, 1, fitsInCache );
    return QPixmap::fromImage( image );
  }
 
  return QPixmap( path );
}
 
void QgsApplication::setThemeName( const QString &themeName )
{
  *sThemeName() = themeName;
}
 
QString QgsApplication::resolvePkgPath()
{
  static QString appPath;
  if ( appPath.isNull() )
  {
    if ( QCoreApplication::instance() )
    {
      appPath = applicationDirPath();
    }
    else
    {
      qWarning( "Application path not initialized" );
    }
  }
 
  if ( !appPath.isNull() || getenv( "QGIS_PREFIX_PATH" ) )
  {
    QString prefix = getenv( "QGIS_PREFIX_PATH" ) ? getenv( "QGIS_PREFIX_PATH" ) : appPath;
 
    // check if QGIS is run from build directory (not the install directory)
    QFile f;
    // "/../../.." is for Mac bundled app in build directory
    static const QStringList paths { QStringList() << QString() << u"/.."_s << u"/bin"_s << u"/../../.."_s };
    for ( const QString &path : paths )
    {
      f.setFileName( prefix + path + "/qgisbuildpath.txt" );
      if ( f.exists() )
        break;
    }
    if ( f.exists() && f.open( QIODevice::ReadOnly ) )
    {
      ABISYM( mRunningFromBuildDir ) = true;
      *sBuildSourcePath() = f.readLine().trimmed();
      *sBuildOutputPath() = f.readLine().trimmed();
      QgsDebugMsgLevel( u"Running from build directory!"_s, 4 );
      QgsDebugMsgLevel( u"- source directory: %1"_s.arg( sBuildSourcePath()->toUtf8().constData() ), 4 );
      QgsDebugMsgLevel( u"- output directory of the build: %1"_s.arg( sBuildOutputPath()->toUtf8().constData() ), 4 );
#if defined(_MSC_VER) && !defined(USING_NMAKE) && !defined(USING_NINJA)
      *sCfgIntDir() = prefix.split( '/', Qt::SkipEmptyParts ).last();
      qDebug( "- cfg: %s", sCfgIntDir()->toUtf8().constData() );
#endif
    }
  }
 
  QString prefixPath;
  if ( getenv( "QGIS_PREFIX_PATH" ) )
    prefixPath = getenv( "QGIS_PREFIX_PATH" );
  else
  {
#if defined(ANDROID)
    // this is "/data/data/org.qgis.qgis" in android
    QDir dir( QDir::homePath() );
    dir.cdUp();
    prefixPath = dir.absolutePath();
#else
 
#if defined(Q_OS_MACOS)
    prefixPath = appPath;
#elif defined(Q_OS_WIN)
    prefixPath = appPath;
    if ( prefixPath.endsWith( "/bin" ) )
      prefixPath.chop( 4 );
#else
    QDir dir( appPath );
    // Fix for server which is one level deeper in /usr/lib/cgi-bin
    if ( appPath.contains( u"cgi-bin"_s ) )
    {
      dir.cdUp();
    }
    dir.cdUp(); // Go from /usr/bin or /usr/lib (for server) to /usr
    prefixPath = dir.absolutePath();
#endif
#endif
  }
 
  if ( ABISYM( mRunningFromBuildDir ) )
    return *sBuildOutputPath() + u"/data"_s;
  else
    return prefixPath + '/' + QStringLiteral( QGIS_DATA_SUBDIR );
}
 
QString QgsApplication::themeName()
{
  return *sThemeName();
}
 
void QgsApplication::setUITheme( const QString &themeName )
{
  // Loop all style sheets, find matching name, load it.
  const QString path = applicationThemeRegistry()->themeFolder( themeName );
  if ( themeName == "default"_L1 || path.isEmpty() )
  {
    setThemeName( u"default"_s );
    qApp->setStyleSheet( QString() );
    instance()->themeChanged();
    return;
  }
 
  QFile file( path + "/style.qss" );
  QFile variablesfile( path + "/variables.qss" );
  QFileInfo variableInfo( variablesfile );
 
  if ( !file.open( QIODevice::ReadOnly ) || ( variableInfo.exists() && !variablesfile.open( QIODevice::ReadOnly ) ) )
  {
    qApp->setStyleSheet( QString() );
    instance()->themeChanged();
    return;
  }
 
  QFile palettefile( path + "/palette.txt" );
  QFileInfo paletteInfo( palettefile );
  if ( paletteInfo.exists() && palettefile.open( QIODevice::ReadOnly ) )
  {
    QPalette pal = qApp->palette();
    QTextStream in( &palettefile );
    while ( !in.atEnd() )
    {
      QString line = in.readLine();
      QStringList parts = line.split( ':' );
      if ( parts.count() == 2 )
      {
        int role = parts.at( 0 ).trimmed().toInt();
        QColor color = QgsSymbolLayerUtils::decodeColor( parts.at( 1 ).trimmed() );
        pal.setColor( static_cast< QPalette::ColorRole >( role ), color );
      }
    }
    palettefile.close();
    qApp->setPalette( pal );
  }
 
  QString styledata = file.readAll();
  styledata.replace( "@theme_path"_L1, path );
 
  if ( variableInfo.exists() )
  {
    QTextStream in( &variablesfile );
    while ( !in.atEnd() )
    {
      QString line = in.readLine();
      // This is a variable
      if ( line.startsWith( '@' ) )
      {
        int index = line.indexOf( ':' );
        QString name = line.mid( 0, index );
        QString value = line.mid( index + 1, line.length() );
        styledata.replace( name, value );
      }
    }
    variablesfile.close();
  }
  file.close();
 
  if ( Qgis::UI_SCALE_FACTOR != 1.0 )
  {
    // apply OS-specific UI scale factor to stylesheet's em values
    int index = 0;
    const static QRegularExpression regex( u"(?<=[\\s:])([0-9\\.]+)(?=em)"_s );
    QRegularExpressionMatch match = regex.match( styledata, index );
    while ( match.hasMatch() )
    {
      index = match.capturedStart();
      styledata.remove( index, match.captured( 0 ).length() );
      QString number = QString::number( match.captured( 0 ).toDouble() * Qgis::UI_SCALE_FACTOR );
      styledata.insert( index, number );
      index += number.length();
      match = regex.match( styledata, index );
    }
  }
 
  qApp->setStyleSheet( styledata );
 
  setThemeName( themeName );
  instance()->themeChanged();
}
 
QHash<QString, QString> QgsApplication::uiThemes()
{
  QHash<QString, QString> mapping = applicationThemeRegistry()->themeFolders();
  mapping.insert( u"default"_s, QString() );
  return mapping;
}
 
QString QgsApplication::authorsFilePath()
{
  return pkgDataPath() + u"/doc/AUTHORS"_s;
}
 
QString QgsApplication::contributorsFilePath()
{
  return pkgDataPath() + u"/doc/CONTRIBUTORS"_s;
}
 
QString QgsApplication::sponsorsFilePath()
{
  return pkgDataPath() + u"/doc/SPONSORS"_s;
}
 
QString QgsApplication::donorsFilePath()
{
  return pkgDataPath() + u"/doc/DONORS"_s;
}
 
QString QgsApplication::translatorsFilePath()
{
  return pkgDataPath() + u"/doc/TRANSLATORS"_s;
}
 
QString QgsApplication::licenceFilePath()
{
  return pkgDataPath() + u"/doc/LICENSE"_s;
}
 
QString QgsApplication::i18nPath()
{
  if ( ABISYM( mRunningFromBuildDir ) )
    return *sBuildOutputPath() + u"/i18n/"_s;
  else
    return pkgDataPath() + u"/i18n/"_s;
}
 
QString QgsApplication::metadataPath()
{
  return pkgDataPath() + u"/resources/metadata-ISO/"_s;
}
 
QString QgsApplication::qgisMasterDatabaseFilePath()
{
  return pkgDataPath() + u"/resources/qgis.db"_s;
}
 
QString QgsApplication::qgisSettingsDirPath()
{
  return *sConfigPath();
}
 
QString QgsApplication::qgisUserDatabaseFilePath()
{
  return qgisSettingsDirPath() + u"qgis.db"_s;
}
 
QString QgsApplication::qgisAuthDatabaseFilePath()
{
  return *sAuthDbDirPath() + u"qgis-auth.db"_s;
}
 
QString QgsApplication::qgisAuthDatabaseUri()
{
  return *sAuthDbUri();
}
 
QString QgsApplication::splashPath()
{
  return u":/images/splash/"_s;
}
 
QString QgsApplication::iconsPath()
{
  return pkgDataPath() + u"/images/icons/"_s;
}
 
QString QgsApplication::srsDatabaseFilePath()
{
  if ( ABISYM( mRunningFromBuildDir ) )
  {
    QString tempCopy = QDir::tempPath() + "/srs6.db";
 
    if ( !QFile( tempCopy ).exists() )
    {
      QFile f( buildSourcePath() + "/resources/srs6.db" );
      if ( !f.copy( tempCopy ) )
      {
        qFatal( "Could not create temporary copy" );
      }
    }
 
    return tempCopy;
  }
  else
  {
    return pkgDataPath() + u"/resources/srs.db"_s;
  }
}
 
void QgsApplication::setSvgPaths( const QStringList &svgPaths )
{
  settingsSearchPathsForSVG->setValue( svgPaths );
  members()->mSvgPathCacheValid = false;
}
 
QStringList QgsApplication::svgPaths()
{
  static QReadWriteLock lock;
 
  QgsReadWriteLocker locker( lock, QgsReadWriteLocker::Read );
 
  if ( members()->mSvgPathCacheValid )
  {
    return members()->mSvgPathCache;
  }
  else
  {
    locker.changeMode( QgsReadWriteLocker::Write );
    //local directories to search when looking for an SVG with a given basename
    //defined by user in options dialog
    const QStringList pathList = settingsSearchPathsForSVG->value();
 
    // maintain user set order while stripping duplicates
    QStringList paths;
    for ( const QString &path : pathList )
    {
      if ( !paths.contains( path ) )
        paths.append( path );
    }
    for ( const QString &path : std::as_const( *sDefaultSvgPaths() ) )
    {
      if ( !paths.contains( path ) )
        paths.append( path );
    }
    members()->mSvgPathCache = paths;
 
    return paths;
  }
}
 
QStringList QgsApplication::layoutTemplatePaths()
{
  //local directories to search when looking for an template with a given basename
  //defined by user in options dialog
  return QgsLayout::settingsSearchPathForTemplates->value();
}
 
QMap<QString, QString> QgsApplication::systemEnvVars()
{
  return *sSystemEnvVars();
}
 
QString QgsApplication::userStylePath()
{
  return qgisSettingsDirPath() + u"symbology-style.db"_s;
}
 
QRegularExpression QgsApplication::shortNameRegularExpression()
{
  const thread_local QRegularExpression regexp( QRegularExpression::anchoredPattern( u"^[A-Za-z][A-Za-z0-9\\._-]*"_s ) );
  return regexp;
}
 
QString QgsApplication::userLoginName()
{
  if ( !sUserName()->isEmpty() )
    return *sUserName();
 
#ifdef _MSC_VER
  TCHAR name [ UNLEN + 1 ];
  DWORD size = UNLEN + 1;
 
  if ( GetUserName( ( TCHAR * )name, &size ) )
  {
    *sUserName() = QString::fromWCharArray( name );
  }
 
 
#elif QT_CONFIG(process)
  QProcess process;
 
  process.start( u"whoami"_s, QStringList() );
  process.waitForFinished();
  *sUserName() = process.readAllStandardOutput().trimmed();
#endif
 
  if ( !sUserName()->isEmpty() )
    return *sUserName();
 
  //backup plan - use environment variables
  *sUserName() = qgetenv( "USER" );
  if ( !sUserName()->isEmpty() )
    return *sUserName();
 
  //last resort
  *sUserName() = qgetenv( "USERNAME" );
  return *sUserName();
}
 
QString QgsApplication::userFullName()
{
  if ( !sUserFullName()->isEmpty() )
    return *sUserFullName();
 
#ifdef _MSC_VER
  TCHAR name [ UNLEN + 1 ];
  DWORD size = UNLEN + 1;
 
  //note - this only works for accounts connected to domain
  if ( GetUserNameEx( NameDisplay, ( TCHAR * )name, &size ) )
  {
    *sUserFullName() = QString::fromWCharArray( name );
  }
 
  //fall back to login name
  if ( sUserFullName()->isEmpty() )
    *sUserFullName() = userLoginName();
#elif defined(Q_OS_ANDROID) || defined(__MINGW32__)
  *sUserFullName() = u"Not available"_s;
#else
  struct passwd *p = getpwuid( getuid() );
 
  if ( p )
  {
    QString gecosName = QString( p->pw_gecos );
    *sUserFullName() = gecosName.left( gecosName.indexOf( ',', 0 ) );
  }
 
#endif
 
  return *sUserFullName();
}
 
QString QgsApplication::osName()
{
#if defined(Q_OS_ANDROID)
  return "android"_L1;
#elif defined(Q_OS_MAC)
  return "osx"_L1;
#elif defined(Q_OS_WIN)
  return "windows"_L1;
#elif defined(Q_OS_LINUX)
  return u"linux"_s;
#elif defined(Q_OS_FREEBSD)
  return u"freebsd"_s;
#elif defined(Q_OS_OPENBSD)
  return u"openbsd"_s;
#elif defined(Q_OS_NETBSD)
  return u"netbsd"_s;
#elif defined(Q_OS_UNIX)
  return "unix"_L1;
#else
  return "unknown"_L1;
#endif
}
 
int QgsApplication::systemMemorySizeMb()
{
  // Bytes to Mb (using 1024 * 1024)
  return static_cast<int>( CPLGetUsablePhysicalRAM() / 1048576 );
}
 
QString QgsApplication::platform()
{
  return *sPlatformName();
}
 
QString QgsApplication::applicationFullName()
{
  if ( !sApplicationFullName()->isEmpty() )
    return *sApplicationFullName();
 
  //use environment variables
  *sApplicationFullName() = qgetenv( "QGIS_APPLICATION_FULL_NAME" );
  if ( !sApplicationFullName()->isEmpty() )
    return *sApplicationFullName();
 
  //last resort
  QgsSettings settings;
  *sApplicationFullName() = settings.value(
                              u"/qgis/application_full_name"_s,
                              u"%1 %2"_s.arg( applicationName(), platform() )
                            ).toString();
  return *sApplicationFullName();
}
 
QString QgsApplication::locale()
{
  if ( settingsLocaleOverrideFlag->value() )
  {
    QString locale = settingsLocaleUserLocale->value();
    // don't differentiate en_US and en_GB
    if ( locale.startsWith( "en"_L1, Qt::CaseInsensitive ) )
    {
      return locale.left( 2 );
    }
 
    return locale;
  }
  else
  {
    return QLocale().name().left( 2 );
  }
}
 
void QgsApplication::setLocale( const QLocale &locale )
{
  QLocale::setDefault( locale );
  emit instance()->localeChanged();
}
 
QString QgsApplication::userThemesFolder()
{
  return qgisSettingsDirPath() + u"/themes"_s;
}
 
QString QgsApplication::defaultStylePath()
{
  return pkgDataPath() + u"/resources/symbology-style.xml"_s;
}
 
QString QgsApplication::defaultThemesFolder()
{
  return pkgDataPath() + u"/resources/themes"_s;
}
 
QString QgsApplication::serverResourcesPath()
{
  return pkgDataPath() + u"/resources/server/"_s;
}
 
QString QgsApplication::libraryPath()
{
  return *sLibraryPath();
}
 
QString QgsApplication::libexecPath()
{
  return *sLibexecPath();
}
 
QString QgsApplication::qmlImportPath()
{
  return *sQmlImportPath();
}
 
QgsApplication::endian_t QgsApplication::endian()
{
  return ( htonl( 1 ) == 1 ) ? XDR : NDR;
}
 
void QgsApplication::initQgis()
{
  if ( !ABISYM( mInitialized ) && QgsApplication::instance() )
  {
    init( *sProfilePath() );
  }
 
  // set the provider plugin path (this creates provider registry)
  QgsProviderRegistry::instance( pluginPath() );
 
  // create data item provider registry
  ( void )QgsApplication::dataItemProviderRegistry();
 
  // create project instance if doesn't exist
  QgsProject::instance(); // skip-keyword-check
 
  // Setup authentication manager for lazy initialization
  authManager()->setup( pluginPath(), qgisAuthDatabaseUri() );
 
  // Make sure we have a NAM created on the main thread.
  // Note that this might call QgsApplication::authManager to
  // setup the proxy configuration that's why it needs to be
  // called after the QgsAuthManager instance has been created
  QgsNetworkAccessManager::instance();
 
}
 
QgsAuthManager *QgsApplication::authManager()
{
  if ( auto *lInstance = instance() )
  {
    if ( !lInstance->mAuthManager )
    {
      lInstance->mAuthManager = QgsAuthManager::instance();
    }
    return lInstance->mAuthManager;
  }
  else
  {
    // no QgsApplication instance
    if ( !sAuthManager )
      sAuthManager = QgsAuthManager::instance();
    return sAuthManager;
  }
}
 
QgsAuthConfigurationStorageRegistry *QgsApplication::authConfigurationStorageRegistry()
{
  return authManager()->authConfigurationStorageRegistry();
}
 
 
void QgsApplication::exitQgis()
{
  // make sure all threads are done before exiting
  QThreadPool::globalInstance()->waitForDone();
 
  // don't create to delete
  if ( auto *lInstance = instance() )
    delete lInstance->mAuthManager;
  else
    delete sAuthManager;
 
  //Ensure that all remaining deleteLater QObjects are actually deleted before we exit.
  QgsApplication::sendPostedEvents( nullptr, QEvent::DeferredDelete );
 
  //delete all registered functions from expression engine (see above comment)
  QgsExpression::cleanRegisteredFunctions();
 
  // avoid creating instance just to delete it!
  if ( QgsProject::sProject )
    delete QgsProject::instance(); // skip-keyword-check
 
  //Ensure that providers/layers which called deleteLater on objects as part of their cleanup
  //result in fully deleted objects before we do the provider registry cleanup.
  //E.g. the QgsOgrConnPool instance has deleteLater calls when unrefing layers, so clearing
  //the project above has not yet fully cleaned up OGR objects, which we MUST do before
  //cleaning up the provider
  QgsApplication::sendPostedEvents( nullptr, QEvent::DeferredDelete );
 
  // avoid creating instance just to delete it!
  if ( QgsProviderRegistry::exists() )
    delete QgsProviderRegistry::instance();
 
  invalidateCaches();
 
  QgsStyle::cleanDefaultStyle();
 
  // tear-down GDAL/OGR, but only if there are no remaining opened
  // datasets (cf https://github.com/qgis/QGIS/issues/58724)
  // Outputting to stdin is obviously absurd, but intended here, since
  // we are just interested in the count of still open datasets.
  if ( GDALDumpOpenDatasets( stdin ) == 0 )
  {
    OGRCleanupAll();
    GDALDestroyDriverManager();
  }
  else
    QgsDebugMsgLevel( u"Skipping call to GDALDestroyDriverManager() due to still opened datasets"_s, 5 );
}
 
QString QgsApplication::showSettings()
{
  QString myEnvironmentVar( getenv( "QGIS_PREFIX_PATH" ) );
  QString myState = tr( "QgsApplication state:\n"
                        " - QGIS_PREFIX_PATH env var:   %1\n"
                        " - Prefix:                     %2\n"
                        " - Plugin Path:                %3\n"
                        " - Package Data Path:          %4\n"
                        " - Active Theme Name:          %5\n"
                        " - Active Theme Path:          %6\n"
                        " - Default Theme Path:         %7\n"
                        " - SVG Search Paths:           %8\n"
                        " - User DB Path:               %9\n"
                        " - Auth DB Path:               %10\n" )
                    .arg( myEnvironmentVar,
                          prefixPath(),
                          pluginPath(),
                          pkgDataPath(),
                          themeName(),
                          activeThemePath(),
                          defaultThemePath(),
                          svgPaths().join( tr( "\n                               ", "match indentation of application state" ) ),
                          qgisMasterDatabaseFilePath() )
                    .arg( QgsAuthManager::instance()->authenticationDatabaseUriStripped() );
  return myState;
}
 
QString QgsApplication::reportStyleSheet( QgsApplication::StyleSheetType styleSheetType )
{
  //
  // Make the style sheet desktop preferences aware by using qapplication
  // palette as a basis for colors where appropriate
  //
  //  QColor myColor1 = palette().highlight().color();
  QColor myColor1( Qt::lightGray );
  QColor myColor2 = myColor1;
  myColor2 = myColor2.lighter( 110 ); //10% lighter
  QString myStyle;
  myStyle = QStringLiteral( ".overview{"
                            "  font: 1.82em;"
                            "  font-weight: bold;"
                            "}"
                            "body{"
                            "  background: white;"
                            "  color: black;"
                            "  font-family: 'Lato', 'Open Sans', 'Lucida Grande', 'Segoe UI', 'Arial', sans-serif;"
                            "  width: 100%;"
                            "}"
                            "h1{  background-color: #F6F6F6;"
                            "  color: #589632; " // from https://qgis.org/styleguide/
                            "  font-size: x-large;  "
                            "  font-weight: normal;"
                            "  background: none;"
                            "  padding: 0.75em 0 0;"
                            "  margin: 0;"
                            "  line-height: 3em;"
                            "}"
                            "h2{  background-color: #F6F6F6;"
                            "  color: #589632; "  // from https://qgis.org/styleguide/
                            "  font-size: medium;  "
                            "  font-weight: normal;"
                            "  background: none;"
                            "  padding: 0.75em 0 0;"
                            "  margin: 0;"
                            "  line-height: 1.1em;"
                            "}"
                            "h3{  background-color: #F6F6F6;"
                            "  color: #93b023;"  // from https://qgis.org/styleguide/
                            "  font-weight: bold;"
                            "  font-size: large;"
                            "  text-align: left;"
                            "  border-bottom: 5px solid #DCEB5C;"
                            "}"
                            "h4{  background-color: #F6F6F6;"
                            "  color: #93b023;"  // from https://qgis.org/styleguide/
                            "  font-weight: bold;"
                            "  font-size: medium;"
                            "  text-align: left;"
                            "}"
                            "h5{    background-color: #F6F6F6;"
                            "   color: #93b023;"  // from https://qgis.org/styleguide/
                            "   font-weight: bold;"
                            "   font-size: small;"
                            "   text-align: left;"
                            "}"
                            "a{  color: #729FCF;"
                            "  font-family: arial,sans-serif;"
                            "}"
                            "label{  background-color: #FFFFCC;"
                            "  border: 1px solid black;"
                            "  margin: 1px;"
                            "  padding: 0px 3px; "
                            "  font-size: small;"
                            "}"
                            "th .strong {"
                            "  font-weight: bold;"
                            "}"
                            "hr {"
                            "  border: 0;"
                            "  height: 0;"
                            "  border-top: 1px solid black;"
                            "}"
                            ".list-view .highlight {"
                            "  text-align: left;"
                            "  border: 0px;"
                            "  width: 20%;"
                            "  padding-right: 15px;"
                            "  padding-left: 20px;"
                            "  font-weight: bold;"
                            "}"
                            ".tabular-view .odd-row {"
                            "  background-color: #f9f9f9;"
                            "}"
                            ".section {"
                            "  font-weight: bold;"
                            "  padding-top:25px;"
                            "}" );
 
  // We have some subtle differences between Qt based style and QWebKit style
  switch ( styleSheetType )
  {
    case StyleSheetType::Qt:
      myStyle += QStringLiteral(
                   ".tabular-view{ "
                   "  border-collapse: collapse;"
                   "  width: 95%;"
                   "}"
                   ".tabular-view th, .tabular-view td { "
                   "  border:1px solid black;"
                   "}" );
      break;
 
    case StyleSheetType::WebBrowser:
      myStyle += QStringLiteral(
                   "body { "
                   "   margin: auto;"
                   "   width: 97%;"
                   "}"
                   "table.tabular-view, table.list-view { "
                   "   border-collapse: collapse;"
                   "   table-layout:fixed;"
                   "   width: 100% !important;"
                   "   font-size: 90%;"
                   "}"
                   // Override
                   "h1 { "
                   "   line-height: inherit;"
                   "}"
                   "td, th {"
                   "   word-wrap: break-word; "
                   "   vertical-align: top;"
                   "}"
                   // Set first column width
                   ".list-view th:first-child, .list-view td:first-child {"
                   "   width: 20%;"
                   "}"
                   ".list-view.highlight { "
                   "   padding-left: inherit; "
                   "}"
                   // Set first column width for inner tables
                   ".tabular-view th:first-child, .tabular-view td:first-child { "
                   "   width: 20%; "
                   "}"
                   // Makes titles bg stand up
                   ".tabular-view th.strong { "
                   "   background-color: #eee; "
                   "}"
                   // Give some visual appearance to those ugly nested tables
                   ".tabular-view th, .tabular-view td { "
                   "   border: 1px solid #eee;"
                   "}"
                 );
      break;
  }
 
  return myStyle;
}
 
void QgsApplication::registerOgrDrivers()
{
  if ( 0 >= OGRGetDriverCount() )
  {
    OGRRegisterAll();
  }
}
 
QString QgsApplication::absolutePathToRelativePath( const QString &aPath, const QString &targetPath )
{
  QString aPathUrl = aPath;
  QString tPathUrl = targetPath;
#if defined( Q_OS_WIN )
  const Qt::CaseSensitivity cs = Qt::CaseInsensitive;
 
  aPathUrl.replace( '\\', '/' );
  if ( aPathUrl.startsWith( "//" ) )
  {
    // keep UNC prefix
    aPathUrl = "\\\\" + aPathUrl.mid( 2 );
  }
 
  tPathUrl.replace( '\\', '/' );
  if ( tPathUrl.startsWith( "//" ) )
  {
    // keep UNC prefix
    tPathUrl = "\\\\" + tPathUrl.mid( 2 );
  }
#else
  const Qt::CaseSensitivity cs = Qt::CaseSensitive;
#endif
 
  QStringList targetElems = tPathUrl.split( '/', Qt::SkipEmptyParts );
  QStringList aPathElems = aPathUrl.split( '/', Qt::SkipEmptyParts );
 
  targetElems.removeAll( u"."_s );
  aPathElems.removeAll( u"."_s );
 
  // remove common part
  int n = 0;
  while ( !aPathElems.isEmpty() &&
          !targetElems.isEmpty() &&
          aPathElems[0].compare( targetElems[0], cs ) == 0 )
  {
    aPathElems.removeFirst();
    targetElems.removeFirst();
    n++;
  }
 
  if ( n == 0 )
  {
    // no common parts; might not even be a file
    return aPathUrl;
  }
 
  if ( !targetElems.isEmpty() )
  {
    // go up to the common directory
    for ( int i = 0; i < targetElems.size(); i++ )
    {
      aPathElems.insert( 0, u".."_s );
    }
  }
  else
  {
    // let it start with . nevertheless,
    // so relative path always start with either ./ or ../
    aPathElems.insert( 0, u"."_s );
  }
 
  return aPathElems.join( '/'_L1 );
}
 
QString QgsApplication::relativePathToAbsolutePath( const QString &rpath, const QString &targetPath )
{
  // relative path should always start with ./ or ../
  if ( !rpath.startsWith( "./"_L1 ) && !rpath.startsWith( "../"_L1 ) )
  {
    return rpath;
  }
 
  QString rPathUrl = rpath;
  QString targetPathUrl = targetPath;
 
#if defined(Q_OS_WIN)
  rPathUrl.replace( '\\', '/' );
  targetPathUrl.replace( '\\', '/' );
 
  bool uncPath = targetPathUrl.startsWith( "//" );
#endif
 
  QStringList srcElems = rPathUrl.split( '/', Qt::SkipEmptyParts );
  QStringList targetElems = targetPathUrl.split( '/', Qt::SkipEmptyParts );
 
#if defined(Q_OS_WIN)
  if ( uncPath )
  {
    targetElems.insert( 0, "" );
    targetElems.insert( 0, "" );
  }
#endif
 
  // append source path elements
  targetElems << srcElems;
  targetElems.removeAll( u"."_s );
 
  // resolve ..
  int pos;
  while ( ( pos = targetElems.indexOf( ".."_L1 ) ) > 0 )
  {
    // remove preceding element and ..
    targetElems.removeAt( pos - 1 );
    targetElems.removeAt( pos - 1 );
  }
 
#if !defined(Q_OS_WIN)
  // make path absolute
  targetElems.prepend( QString() );
#endif
 
  return targetElems.join( '/'_L1 );
}
 
QString QgsApplication::buildSourcePath()
{
  return *sBuildSourcePath();
}
 
QString QgsApplication::buildOutputPath()
{
  return *sBuildOutputPath();
}
 
#if defined(_MSC_VER) && !defined(USING_NMAKE) && !defined(USING_NINJA)
QString QgsApplication::cfgIntDir()
{
  return *sCfgIntDir();
}
#endif
 
void QgsApplication::skipGdalDriver( const QString &driver )
{
  if ( sGdalSkipList()->contains( driver ) || driver.isEmpty() )
  {
    return;
  }
  *sGdalSkipList() << driver;
  applyGdalSkippedDrivers();
}
 
void QgsApplication::restoreGdalDriver( const QString &driver )
{
  if ( !sGdalSkipList()->contains( driver ) )
  {
    return;
  }
  int myPos = sGdalSkipList()->indexOf( driver );
  if ( myPos >= 0 )
  {
    sGdalSkipList()->removeAt( myPos );
  }
  applyGdalSkippedDrivers();
}
 
QStringList QgsApplication::skippedGdalDrivers()
{
  return *sGdalSkipList();
}
 
void QgsApplication::setSkippedGdalDrivers( const QStringList &skippedGdalDrivers,
    const QStringList &deferredSkippedGdalDrivers )
{
  *sGdalSkipList() = skippedGdalDrivers;
  *sDeferredSkippedGdalDrivers() = deferredSkippedGdalDrivers;
 
  QgsSettings settings;
  settings.setValue( u"gdal/skipDrivers"_s, skippedGdalDrivers.join( ','_L1 ) );
 
  applyGdalSkippedDrivers();
}
 
void QgsApplication::registerGdalDriversFromSettings()
{
  QgsSettings settings;
  QString joinedList, delimiter;
  if ( settings.contains( u"gdal/skipDrivers"_s ) )
  {
    joinedList = settings.value( u"gdal/skipDrivers"_s, QString() ).toString();
    delimiter = u","_s;
  }
  else
  {
    joinedList = settings.value( u"gdal/skipList"_s, QString() ).toString();
    delimiter = u" "_s;
  }
  QStringList myList;
  if ( !joinedList.isEmpty() )
  {
    myList = joinedList.split( delimiter );
  }
  *sGdalSkipList() = myList;
  applyGdalSkippedDrivers();
}
 
QStringList QgsApplication::deferredSkippedGdalDrivers()
{
  return *sDeferredSkippedGdalDrivers();
}
 
void QgsApplication::applyGdalSkippedDrivers()
{
  sGdalSkipList()->removeDuplicates();
  QStringList realDisabledDriverList;
  for ( const auto &driverName : *sGdalSkipList() )
  {
    if ( !sDeferredSkippedGdalDrivers()->contains( driverName ) )
      realDisabledDriverList << driverName;
  }
  QString myDriverList = realDisabledDriverList.join( ',' );
  QgsDebugMsgLevel( u"Gdal Skipped driver list set to:"_s, 2 );
  QgsDebugMsgLevel( myDriverList, 2 );
  CPLSetConfigOption( "GDAL_SKIP", myDriverList.toUtf8() );
  GDALAllRegister(); //to update driver list and skip missing ones
}
 
bool QgsApplication::createThemeFolder()
{
  QString folder = userThemesFolder();
  QDir myDir( folder );
  if ( !myDir.exists() )
  {
    myDir.mkpath( folder );
  }
 
  return true;
}
 
void QgsApplication::copyPath( const QString &src, const QString &dst )
{
  QDir dir( src );
  if ( ! dir.exists() )
    return;
 
  const auto subDirectories = dir.entryList( QDir::Dirs | QDir::NoDotAndDotDot );
  for ( const QString &d : subDirectories )
  {
    QString dst_path = dst + QDir::separator() + d;
    dir.mkpath( dst_path );
    copyPath( src + QDir::separator() + d, dst_path );
  }
 
  const auto files = dir.entryList( QDir::Files );
  for ( const QString &f : files )
  {
    QFile::copy( src + QDir::separator() + f, dst + QDir::separator() + f );
  }
}
 
QVariantMap QgsApplication::customVariables()
{
  //read values from QgsSettings
  QgsSettings settings;
 
  QVariantMap variables;
 
  //check if settings contains any variables
  settings.beginGroup( "variables" );
  QStringList childKeys = settings.childKeys();
  for ( QStringList::const_iterator it = childKeys.constBegin(); it != childKeys.constEnd(); ++it )
  {
    QString name = *it;
    variables.insert( name, settings.value( name ) );
  }
 
  return variables;
}
 
void QgsApplication::setCustomVariables( const QVariantMap &variables )
{
  QgsSettings settings;
 
  QVariantMap::const_iterator it = variables.constBegin();
  settings.beginGroup( "variables" );
  settings.remove( "" );
  for ( ; it != variables.constEnd(); ++it )
  {
    settings.setValue( it.key(), it.value() );
  }
 
  emit instance()->customVariablesChanged();
}
 
void QgsApplication::setCustomVariable( const QString &name, const QVariant &value )
{
  // save variable to settings
  QgsSettings settings;
 
  settings.setValue( u"variables/"_s + name, value );
 
  emit instance()->customVariablesChanged();
}
 
QStringList QgsApplication::temporarilyTrustedProjectsFolders()
{
  return instance()->mTemporarilyTrustedProjectFolders;
}
 
void QgsApplication::setTemporarilyTrustedProjectsFolders( const QStringList &trustedProjectsFolders )
{
  instance()->mTemporarilyTrustedProjectFolders = trustedProjectsFolders;
}
 
QStringList QgsApplication::temporarilyUntrustedProjectsFolders()
{
  return instance()->mTemporarilyUntrustedProjectFolders;
}
 
void QgsApplication::setTemporarilyUntrustedProjectsFolders( const QStringList &untrustedProjectsFolders )
{
  instance()->mTemporarilyUntrustedProjectFolders = untrustedProjectsFolders;
}
 
int QgsApplication::scaleIconSize( int standardSize, bool applyDevicePixelRatio )
{
  QFontMetrics fm( ( QFont() ) );
  const double scale = 1.1 * standardSize / 24;
  int scaledIconSize = static_cast< int >( std::floor( std::max( Qgis::UI_SCALE_FACTOR * fm.height() * scale, static_cast< double >( standardSize ) ) ) );
  if ( applyDevicePixelRatio )
  {
    if ( QWidget *activeWindow = QApplication::activeWindow() )
      scaledIconSize *= ( activeWindow->screen() ? QApplication::activeWindow()->screen()->devicePixelRatio() : 1 );
  }
  return scaledIconSize;
}
 
int QgsApplication::maxConcurrentConnectionsPerPool() const
{
  return settingsConnectionPoolMaximumConcurrentConnections->value();
}
 
void QgsApplication::setTranslation( const QString &translation )
{
  *sTranslation() = translation;
  if ( auto app = QgsApplication::instance() )
  {
    app->installTranslators();
  }
}
 
QString QgsApplication::translation() const
{
  return *sTranslation();
}
 
void QgsApplication::collectTranslatableObjects( QgsTranslationContext *translationContext )
{
  emit requestForTranslatableObjects( translationContext );
}
 
QString QgsApplication::nullRepresentation()
{
  ApplicationMembers *appMembers = members();
  if ( appMembers->mNullRepresentation.isNull() )
  {
    appMembers->mNullRepresentation = QgsSettings().value( u"qgis/nullValue"_s, u"NULL"_s ).toString();
  }
  return appMembers->mNullRepresentation;
}
 
void QgsApplication::setNullRepresentation( const QString &nullRepresentation )
{
  ApplicationMembers *appMembers = members();
  if ( !appMembers || appMembers->mNullRepresentation == nullRepresentation )
    return;
 
  appMembers->mNullRepresentation = nullRepresentation;
  QgsSettings().setValue( u"qgis/nullValue"_s, nullRepresentation );
 
  QgsApplication *app = instance();
  if ( app )
    emit app->nullRepresentationChanged();
}
 
QgsActionScopeRegistry *QgsApplication::actionScopeRegistry()
{
  return members()->mActionScopeRegistry.get();
}
 
bool QgsApplication::createDatabase( QString *errorMessage )
{
  // set a working directory up for gdal to write .aux.xml files into
  // for cases where the raster dir is read only to the user
  // if the env var is already set it will be used preferentially
  QString myPamPath = qgisSettingsDirPath() + u"gdal_pam/"_s;
  QDir myDir( myPamPath );
  if ( !myDir.exists() )
  {
    myDir.mkpath( myPamPath ); //fail silently
  }
 
#if defined(Q_OS_WIN)
  CPLSetConfigOption( "GDAL_PAM_PROXY_DIR", myPamPath.toUtf8() );
#else
  //under other OS's we use an environment var so the user can
  //override the path if he likes
  int myChangeFlag = 0; //whether we want to force the env var to change
  setenv( "GDAL_PAM_PROXY_DIR", myPamPath.toUtf8(), myChangeFlag );
#endif
 
  // Check qgis.db and make private copy if necessary
  QFile qgisPrivateDbFile( QgsApplication::qgisUserDatabaseFilePath() );
 
  // first we look for ~/.qgis/qgis.db
  if ( !qgisPrivateDbFile.exists() )
  {
    // if it doesn't exist we copy it in from the global resources dir
    QString qgisMasterDbFileName = QgsApplication::qgisMasterDatabaseFilePath();
    QFile masterFile( qgisMasterDbFileName );
 
    // Must be sure there is destination directory ~/.qgis
    QDir().mkpath( QgsApplication::qgisSettingsDirPath() );
 
    //now copy the master file into the users .qgis dir
    bool isDbFileCopied = masterFile.copy( qgisPrivateDbFile.fileName() );
 
    if ( !isDbFileCopied )
    {
      if ( errorMessage )
      {
        *errorMessage = tr( "[ERROR] Can not make qgis.db private copy" );
      }
      return false;
    }
 
    QFile::Permissions perms = QFile( qgisPrivateDbFile.fileName() ).permissions();
    if ( !( perms & QFile::WriteOwner ) )
    {
      if ( !qgisPrivateDbFile.setPermissions( perms | QFile::WriteOwner ) )
      {
        if ( errorMessage )
        {
          *errorMessage = tr( "Can not make '%1' user writable" ).arg( qgisPrivateDbFile.fileName() );
        }
        return false;
      }
    }
  }
  else
  {
    // migrate if necessary
    sqlite3_database_unique_ptr database;
    if ( database.open( QgsApplication::qgisUserDatabaseFilePath() ) != SQLITE_OK )
    {
      if ( errorMessage )
      {
        *errorMessage = tr( "Could not open qgis.db" );
      }
      return false;
    }
 
    char *errmsg = nullptr;
    int res = sqlite3_exec( database.get(), "SELECT srs_id FROM tbl_srs LIMIT 0", nullptr, nullptr, &errmsg );
    if ( res != SQLITE_OK )
    {
      sqlite3_free( errmsg );
 
      // qgis.db is missing tbl_srs, create it
      if ( sqlite3_exec( database.get(),
                         "DROP INDEX IF EXISTS idx_srsauthid;"
                         "CREATE TABLE tbl_srs ("
                         "srs_id INTEGER PRIMARY KEY,"
                         "description text NOT NULL,"
                         "projection_acronym text NOT NULL,"
                         "ellipsoid_acronym NOT NULL,"
                         "parameters text NOT NULL,"
                         "srid integer,"
                         "auth_name varchar,"
                         "auth_id varchar,"
                         "is_geo integer NOT NULL,"
                         "deprecated boolean,"
                         "wkt text);"
                         "CREATE INDEX idx_srsauthid on tbl_srs(auth_name,auth_id);", nullptr, nullptr, &errmsg ) != SQLITE_OK )
      {
        if ( errorMessage )
        {
          *errorMessage = tr( "Creation of missing tbl_srs in the private qgis.db failed.\n%1" ).arg( QString::fromUtf8( errmsg ) );
        }
        sqlite3_free( errmsg );
        return false;
      }
    }
    else
    {
      // test if wkt column exists in database
      res = sqlite3_exec( database.get(), "SELECT wkt FROM tbl_srs LIMIT 0", nullptr, nullptr, &errmsg );
      if ( res != SQLITE_OK )
      {
        // need to add wkt column
        sqlite3_free( errmsg );
        if ( sqlite3_exec( database.get(),
                           "DROP INDEX IF EXISTS idx_srsauthid;"
                           "DROP TABLE IF EXISTS tbl_srs_bak;"
                           "ALTER TABLE tbl_srs RENAME TO tbl_srs_bak;"
                           "CREATE TABLE tbl_srs ("
                           "srs_id INTEGER PRIMARY KEY,"
                           "description text NOT NULL,"
                           "projection_acronym text NOT NULL,"
                           "ellipsoid_acronym NOT NULL,"
                           "parameters text NOT NULL,"
                           "srid integer,"
                           "auth_name varchar,"
                           "auth_id varchar,"
                           "is_geo integer NOT NULL,"
                           "deprecated boolean,"
                           "wkt text);"
                           "CREATE INDEX idx_srsauthid on tbl_srs(auth_name,auth_id);"
                           "INSERT INTO tbl_srs(srs_id,description,projection_acronym,ellipsoid_acronym,parameters,srid,auth_name,auth_id,is_geo,deprecated) SELECT srs_id,description,projection_acronym,ellipsoid_acronym,parameters,srid,'','',is_geo,0 FROM tbl_srs_bak;"
                           "DROP TABLE tbl_srs_bak", nullptr, nullptr, &errmsg ) != SQLITE_OK )
        {
          if ( errorMessage )
          {
            *errorMessage = tr( "Migration of private qgis.db failed.\n%1" ).arg( QString::fromUtf8( errmsg ) );
          }
          sqlite3_free( errmsg );
          return false;
        }
      }
    }
 
    res = sqlite3_exec( database.get(), "SELECT acronym FROM tbl_projection LIMIT 0", nullptr, nullptr, &errmsg );
    if ( res != SQLITE_OK )
    {
      sqlite3_free( errmsg );
 
      // qgis.db is missing tbl_projection, create it
      if ( sqlite3_exec( database.get(),
                         "CREATE TABLE tbl_projection ("
                         "acronym varchar(20) NOT NULL PRIMARY KEY,"
                         "name varchar(255) NOT NULL default '',"
                         "notes varchar(255) NOT NULL default '',"
                         "parameters varchar(255) NOT NULL default ''"
                         ")", nullptr, nullptr, &errmsg ) != SQLITE_OK )
      {
        if ( errorMessage )
        {
          *errorMessage = tr( "Creation of missing tbl_projection in the private qgis.db failed.\n%1" ).arg( QString::fromUtf8( errmsg ) );
        }
        sqlite3_free( errmsg );
        return false;
      }
    }
 
    res = sqlite3_exec( database.get(), "SELECT epsg FROM tbl_srs LIMIT 0", nullptr, nullptr, &errmsg );
    if ( res == SQLITE_OK )
    {
      // epsg column exists => need migration
      if ( sqlite3_exec( database.get(),
                         "DROP INDEX IF EXISTS idx_srsauthid;"
                         "DROP TABLE IF EXISTS tbl_srs_bak;"
                         "ALTER TABLE tbl_srs RENAME TO tbl_srs_bak;"
                         "CREATE TABLE tbl_srs ("
                         "srs_id INTEGER PRIMARY KEY,"
                         "description text NOT NULL,"
                         "projection_acronym text NOT NULL,"
                         "ellipsoid_acronym NOT NULL,"
                         "parameters text NOT NULL,"
                         "srid integer,"
                         "auth_name varchar,"
                         "auth_id varchar,"
                         "is_geo integer NOT NULL,"
                         "deprecated boolean,"
                         "wkt text);"
                         "CREATE INDEX idx_srsauthid on tbl_srs(auth_name,auth_id);"
                         "INSERT INTO tbl_srs(srs_id,description,projection_acronym,ellipsoid_acronym,parameters,srid,auth_name,auth_id,is_geo,deprecated) SELECT srs_id,description,projection_acronym,ellipsoid_acronym,parameters,srid,'','',is_geo,0 FROM tbl_srs_bak;"
                         "DROP TABLE tbl_srs_bak", nullptr, nullptr, &errmsg ) != SQLITE_OK )
      {
        if ( errorMessage )
        {
          *errorMessage = tr( "Migration of private qgis.db failed.\n%1" ).arg( QString::fromUtf8( errmsg ) );
        }
        sqlite3_free( errmsg );
        return false;
      }
    }
    else
    {
      sqlite3_free( errmsg );
    }
 
    if ( sqlite3_exec( database.get(), "DROP VIEW vw_srs", nullptr, nullptr, &errmsg ) != SQLITE_OK )
    {
      QgsDebugError( u"vw_srs didn't exists in private qgis.db: %1"_s.arg( errmsg ) );
    }
 
    if ( sqlite3_exec( database.get(),
                       "CREATE VIEW vw_srs AS"
                       " SELECT"
                       " a.description AS description"
                       ",a.srs_id AS srs_id"
                       ",a.is_geo AS is_geo"
                       ",coalesce(b.name,a.projection_acronym) AS name"
                       ",a.parameters AS parameters"
                       ",a.auth_name AS auth_name"
                       ",a.auth_id AS auth_id"
                       ",a.deprecated AS deprecated"
                       " FROM tbl_srs a"
                       " LEFT OUTER JOIN tbl_projection b ON a.projection_acronym=b.acronym"
                       " ORDER BY coalesce(b.name,a.projection_acronym),a.description", nullptr, nullptr, &errmsg ) != SQLITE_OK )
    {
      if ( errorMessage )
      {
        *errorMessage = tr( "Update of view in private qgis.db failed.\n%1" ).arg( QString::fromUtf8( errmsg ) );
      }
      sqlite3_free( errmsg );
      return false;
    }
  }
  return true;
}
 
void QgsApplication::setMaxThreads( int maxThreads )
{
  QgsDebugMsgLevel( u"maxThreads: %1"_s.arg( maxThreads ), 2 );
 
  // make sure value is between 1 and #cores, if not set to -1 (use #cores)
  if ( maxThreads < 1 || maxThreads > QThread::idealThreadCount() )
    maxThreads = -1;
 
  // force at least 2 threads -- anything less risks deadlocks within Qt itself (e.g in QImage internal mutexes)
  if ( maxThreads > 0 && maxThreads < 2 )
    maxThreads = 2;
 
  // save value
  ABISYM( sMaxThreads ) = maxThreads;
 
  // if -1 use #cores
  if ( maxThreads == -1 )
    maxThreads = QThread::idealThreadCount();
 
  // set max thread count in QThreadPool
  QThreadPool::globalInstance()->setMaxThreadCount( maxThreads );
  QgsDebugMsgLevel( u"set QThreadPool max thread count to %1"_s.arg( QThreadPool::globalInstance()->maxThreadCount() ), 2 );
}
 
QgsTaskManager *QgsApplication::taskManager()
{
  return members()->mTaskManager.get();
}
 
QgsSettingsRegistryCore *QgsApplication::settingsRegistryCore()
{
  return members()->mSettingsRegistryCore.get();
}
 
QgsColorSchemeRegistry *QgsApplication::colorSchemeRegistry()
{
  return members()->mColorSchemeRegistry.get();
}
 
QgsPaintEffectRegistry *QgsApplication::paintEffectRegistry()
{
  return members()->mPaintEffectRegistry.get();
}
 
QgsRendererRegistry *QgsApplication::rendererRegistry()
{
  return members()->mRendererRegistry.get();
}
 
QgsRasterRendererRegistry *QgsApplication::rasterRendererRegistry()
{
  return members()->mRasterRendererRegistry.get();
}
 
QgsPointCloudRendererRegistry *QgsApplication::pointCloudRendererRegistry()
{
  return members()->mPointCloudRendererRegistry.get();
}
 
QgsTiledSceneRendererRegistry *QgsApplication::tiledSceneRendererRegistry()
{
  return members()->mTiledSceneRendererRegistry.get();
}
 
QgsDataItemProviderRegistry *QgsApplication::dataItemProviderRegistry()
{
  if ( auto *lInstance = instance() )
  {
    if ( !instance()->mDataItemProviderRegistry )
    {
      lInstance->mDataItemProviderRegistry = std::make_unique<QgsDataItemProviderRegistry>();
    }
    return lInstance->mDataItemProviderRegistry.get();
  }
  else
  {
    // no QgsApplication instance
    static QgsDataItemProviderRegistry *sDataItemProviderRegistry = nullptr;
    if ( !sDataItemProviderRegistry )
      sDataItemProviderRegistry = new QgsDataItemProviderRegistry();
    return sDataItemProviderRegistry;
  }
}
 
QgsCoordinateReferenceSystemRegistry *QgsApplication::coordinateReferenceSystemRegistry()
{
  return members()->mCrsRegistry.get();
}
 
QgsSvgCache *QgsApplication::svgCache()
{
  return members()->mSvgCache.get();
}
 
QgsImageCache *QgsApplication::imageCache()
{
  return members()->mImageCache.get();
}
 
QgsSourceCache *QgsApplication::sourceCache()
{
  return members()->mSourceCache.get();
}
 
QgsNetworkContentFetcherRegistry *QgsApplication::networkContentFetcherRegistry()
{
  return members()->mNetworkContentFetcherRegistry.get();
}
 
QgsValidityCheckRegistry *QgsApplication::validityCheckRegistry()
{
  return members()->mValidityCheckRegistry.get();
}
 
QgsSymbolLayerRegistry *QgsApplication::symbolLayerRegistry()
{
  return members()->mSymbolLayerRegistry.get();
}
 
QgsCalloutRegistry *QgsApplication::calloutRegistry()
{
  return members()->mCalloutRegistry.get();
}
 
QgsLayoutItemRegistry *QgsApplication::layoutItemRegistry()
{
  return members()->mLayoutItemRegistry.get();
}
 
QgsAnnotationItemRegistry *QgsApplication::annotationItemRegistry()
{
  return members()->mAnnotationItemRegistry.get();
}
 
QgsSensorRegistry *QgsApplication::sensorRegistry()
{
  return members()->mSensorRegistry.get();
}
 
QgsPlotRegistry *QgsApplication::plotRegistry()
{
  return members()->mPlotRegistry.get();
}
 
QgsGpsConnectionRegistry *QgsApplication::gpsConnectionRegistry()
{
  return members()->mGpsConnectionRegistry.get();
}
 
QgsBabelFormatRegistry *QgsApplication::gpsBabelFormatRegistry()
{
  return members()->mGpsBabelFormatRegistry.get();
}
 
QgsPluginLayerRegistry *QgsApplication::pluginLayerRegistry()
{
  return members()->mPluginLayerRegistry.get();
}
 
QgsClassificationMethodRegistry *QgsApplication::classificationMethodRegistry()
{
  return members()->mClassificationMethodRegistry.get();
}
 
QgsBookmarkManager *QgsApplication::bookmarkManager()
{
  return members()->mBookmarkManager.get();
}
 
QgsTileDownloadManager *QgsApplication::tileDownloadManager()
{
  return members()->mTileDownloadManager.get();
}
 
QgsRecentStyleHandler *QgsApplication::recentStyleHandler()
{
  return members()->mRecentStyleHandler.get();
}
 
QgsDatabaseQueryLog *QgsApplication::databaseQueryLog()
{
  return members()->mQueryLogger.get();
}
 
QgsStyleModel *QgsApplication::defaultStyleModel()
{
  return members()->mStyleModel.get();
}
 
QgsFontManager *QgsApplication::fontManager()
{
  return members()->mFontManager.get();
}
 
QgsMessageLog *QgsApplication::messageLog()
{
  return members()->mMessageLog.get();
}
 
QgsProcessingRegistry *QgsApplication::processingRegistry()
{
  return members()->mProcessingRegistry.get();
}
 
QgsConnectionRegistry *QgsApplication::connectionRegistry()
{
  return members()->mConnectionRegistry.get();
}
 
QgsLayerMetadataProviderRegistry *QgsApplication::layerMetadataProviderRegistry()
{
  return members()->mLayerMetadataProviderRegistry.get();
}
 
QgsPageSizeRegistry *QgsApplication::pageSizeRegistry()
{
  return members()->mPageSizeRegistry.get();
}
 
QgsAnnotationRegistry *QgsApplication::annotationRegistry()
{
  return members()->mAnnotationRegistry.get();
}
 
QgsApplicationThemeRegistry *QgsApplication::applicationThemeRegistry()
{
  return members()->mApplicationThemeRegistry.get();
}
 
QgsNumericFormatRegistry *QgsApplication::numericFormatRegistry()
{
  return members()->mNumericFormatRegistry.get();
}
 
QgsFieldFormatterRegistry *QgsApplication::fieldFormatterRegistry()
{
  return members()->mFieldFormatterRegistry.get();
}
 
Qgs3DRendererRegistry *QgsApplication::renderer3DRegistry()
{
  return members()->m3DRendererRegistry.get();
}
 
Qgs3DSymbolRegistry *QgsApplication::symbol3DRegistry()
{
  return members()->m3DSymbolRegistry.get();
}
 
QgsScaleBarRendererRegistry *QgsApplication::scaleBarRendererRegistry()
{
  return members()->mScaleBarRendererRegistry.get();
}
 
QgsLabelingEngineRuleRegistry *QgsApplication::labelingEngineRuleRegistry()
{
  return members()->mLabelingEngineRuleRegistry.get();
}
 
QgsProjectStorageRegistry *QgsApplication::projectStorageRegistry()
{
  return members()->mProjectStorageRegistry.get();
}
 
QgsExternalStorageRegistry *QgsApplication::externalStorageRegistry()
{
  return members()->mExternalStorageRegistry.get();
}
 
QgsProfileSourceRegistry *QgsApplication::profileSourceRegistry()
{
  return members()->mProfileSourceRegistry.get();
}
 
QgsLocalizedDataPathRegistry *QgsApplication::localizedDataPathRegistry()
{
  return members()->mLocalizedDataPathRegistry.get();
}
 
QgsApplication::ApplicationMembers::ApplicationMembers()
{
  // don't use initializer lists or scoped pointers - as more objects are added here we
  // will need to be careful with the order of creation/destruction
  mSettingsRegistryCore = std::make_unique<QgsSettingsRegistryCore>();
  mLocalizedDataPathRegistry = std::make_unique<QgsLocalizedDataPathRegistry>();
  mMessageLog = std::make_unique<QgsMessageLog>();
  QgsRuntimeProfiler *profiler = QgsRuntimeProfiler::threadLocalInstance();
 
  {
    profiler->start( tr( "Create query logger" ) );
    mQueryLogger = std::make_unique<QgsDatabaseQueryLog>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup coordinate reference system registry" ) );
    mCrsRegistry = std::make_unique<QgsCoordinateReferenceSystemRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Create connection registry" ) );
    mConnectionRegistry = std::make_unique<QgsConnectionRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Create project storage registry" ) );
    mProjectStorageRegistry = std::make_unique<QgsProjectStorageRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Create layer metadata provider registry" ) );
    mLayerMetadataProviderRegistry = std::make_unique<QgsLayerMetadataProviderRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Create font manager" ) );
    mFontManager = std::make_unique<QgsFontManager>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup task manager" ) );
    mTaskManager = std::make_unique<QgsTaskManager>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup action scope registry" ) );
    mActionScopeRegistry = std::make_unique<QgsActionScopeRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup numeric formats" ) );
    mNumericFormatRegistry = std::make_unique<QgsNumericFormatRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup field formats" ) );
    mFieldFormatterRegistry = std::make_unique<QgsFieldFormatterRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup SVG cache" ) );
    mSvgCache = std::make_unique<QgsSvgCache>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup image cache" ) );
    mImageCache = std::make_unique<QgsImageCache>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup source cache" ) );
    mSourceCache = std::make_unique<QgsSourceCache>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup color scheme registry" ) );
    mColorSchemeRegistry = std::make_unique<QgsColorSchemeRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup paint effect" ) );
    mPaintEffectRegistry = std::make_unique<QgsPaintEffectRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup symbol layer registry" ) );
    mSymbolLayerRegistry = std::make_unique<QgsSymbolLayerRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Recent style handler" ) );
    mRecentStyleHandler = std::make_unique<QgsRecentStyleHandler>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup callout registry" ) );
    mCalloutRegistry = std::make_unique<QgsCalloutRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup renderer registry" ) );
    mRendererRegistry = std::make_unique<QgsRendererRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup raster renderer registry" ) );
    mRasterRendererRegistry = std::make_unique<QgsRasterRendererRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup point cloud renderer registry" ) );
    mPointCloudRendererRegistry = std::make_unique<QgsPointCloudRendererRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup tiled scene renderer registry" ) );
    mTiledSceneRendererRegistry = std::make_unique<QgsTiledSceneRendererRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup GPS registry" ) );
    mGpsConnectionRegistry = std::make_unique<QgsGpsConnectionRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup GPSBabel format registry" ) );
    mGpsBabelFormatRegistry = std::make_unique<QgsBabelFormatRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup plugin layer registry" ) );
    mPluginLayerRegistry = std::make_unique<QgsPluginLayerRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup Processing registry" ) );
    mProcessingRegistry = std::make_unique<QgsProcessingRegistry>();
    profiler->end();
  }
  mPageSizeRegistry = std::make_unique<QgsPageSizeRegistry>();
  {
    profiler->start( tr( "Setup layout item registry" ) );
    mLayoutItemRegistry = std::make_unique<QgsLayoutItemRegistry>();
    mLayoutItemRegistry->populate();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup annotation registry" ) );
    mAnnotationRegistry = std::make_unique<QgsAnnotationRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup application theme registry" ) );
    mApplicationThemeRegistry = std::make_unique<QgsApplicationThemeRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup annotation item registry" ) );
    mAnnotationItemRegistry = std::make_unique<QgsAnnotationItemRegistry>();
    mAnnotationItemRegistry->populate();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup labeling engine rule registry" ) );
    mLabelingEngineRuleRegistry = std::make_unique<QgsLabelingEngineRuleRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup sensor registry" ) );
    mSensorRegistry = std::make_unique<QgsSensorRegistry>();
    mSensorRegistry->populate();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup plot registry" ) );
    mPlotRegistry = std::make_unique<QgsPlotRegistry>();
    mPlotRegistry->populate();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup 3D symbol registry" ) );
    m3DSymbolRegistry = std::make_unique<Qgs3DSymbolRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup 3D renderer registry" ) );
    m3DRendererRegistry = std::make_unique<Qgs3DRendererRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup external storage registry" ) );
    mExternalStorageRegistry = std::make_unique<QgsExternalStorageRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup profile source registry" ) );
    mProfileSourceRegistry = std::make_unique<QgsProfileSourceRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup network content cache" ) );
    mNetworkContentFetcherRegistry = std::make_unique<QgsNetworkContentFetcherRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup layout check registry" ) );
    mValidityCheckRegistry = std::make_unique<QgsValidityCheckRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup classification registry" ) );
    mClassificationMethodRegistry = std::make_unique<QgsClassificationMethodRegistry>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup bookmark manager" ) );
    mBookmarkManager = std::make_unique<QgsBookmarkManager>( nullptr );
    profiler->end();
  }
  {
    profiler->start( tr( "Setup tile download manager" ) );
    mTileDownloadManager = std::make_unique<QgsTileDownloadManager>();
    profiler->end();
  }
  {
    profiler->start( tr( "Setup scalebar registry" ) );
    mScaleBarRendererRegistry = std::make_unique<QgsScaleBarRendererRegistry>();
    profiler->end();
  }
}
 
QgsApplication::ApplicationMembers::~ApplicationMembers()
{
  // we reset unique_ptr manually because we care about destruction order
  mStyleModel.reset();
  mTileDownloadManager.reset();
  mScaleBarRendererRegistry.reset();
  mValidityCheckRegistry.reset();
  mActionScopeRegistry.reset();
  m3DRendererRegistry.reset();
  m3DSymbolRegistry.reset();
  mAnnotationRegistry.reset();
  mApplicationThemeRegistry.reset();
  mColorSchemeRegistry.reset();
  mFieldFormatterRegistry.reset();
  mGpsConnectionRegistry.reset();
  mGpsBabelFormatRegistry.reset();
  mPaintEffectRegistry.reset();
  mPluginLayerRegistry.reset();
  mProcessingRegistry.reset();
  mPageSizeRegistry.reset();
  mAnnotationItemRegistry.reset();
  mSensorRegistry.reset();
  mPlotRegistry.reset();
  mLayoutItemRegistry.reset();
  mPointCloudRendererRegistry.reset();
  mTiledSceneRendererRegistry.reset();
  mRasterRendererRegistry.reset();
  mRendererRegistry.reset();
  mSvgCache.reset();
  mImageCache.reset();
  mSourceCache.reset();
  mCalloutRegistry.reset();
  mRecentStyleHandler.reset();
  mLabelingEngineRuleRegistry.reset();
  mSymbolLayerRegistry.reset();
  mExternalStorageRegistry.reset();
  mProfileSourceRegistry.reset();
  mTaskManager.reset();
  mNetworkContentFetcherRegistry.reset();
  mClassificationMethodRegistry.reset();
  mNumericFormatRegistry.reset();
  mBookmarkManager.reset();
  mConnectionRegistry.reset();
  mProjectStorageRegistry.reset();
  mLayerMetadataProviderRegistry.reset();
  mFontManager.reset();
  mLocalizedDataPathRegistry.reset();
  mCrsRegistry.reset();
  mQueryLogger.reset();
  mMessageLog.reset();
}
 
QgsApplication::ApplicationMembers *QgsApplication::members()
{
  if ( auto *lInstance = instance() )
  {
    return lInstance->mApplicationMembers.get();
  }
  else
  {
    static QRecursiveMutex sMemberMutex;
    QMutexLocker lock( &sMemberMutex );
    if ( !sApplicationMembers )
      sApplicationMembers = new ApplicationMembers();
    return sApplicationMembers;
  }
}