0/NULL -> nullptr

Using clang-tidy modernize-use-nullptr

Author: nyalldawson

src/app/qgisapp.cpp

@@ -8600,7 +8600,7 @@ void QgisApp::layerSubsetString()
 
   if ( !vlayer->vectorJoins().isEmpty() )
   {
-    if ( QMessageBox::question( NULL, tr( "Filter on joined fields" ),
+    if ( QMessageBox::question( nullptr, tr( "Filter on joined fields" ),
                                 tr( "You are about to set a subset filter on a layer that has joined fields. "
                                     "Joined fields cannot be filtered, unless you convert the layer to a virtual layer first. "
                                     "Would you like to create a virtual layer out of this layer first?" ),

src/app/qgsbookmarks.cpp

@@ -660,7 +660,7 @@ QAbstractTableModel *QgsMergedBookmarksTableModel::qgisModel()
 void QgsMergedBookmarksTableModel::moveBookmark( QAbstractTableModel &modelFrom, QAbstractTableModel &modelTo, int row )
 {
   QSqlTableModel *qgisModel = dynamic_cast<QSqlTableModel *>( &modelTo );
-  if ( qgisModel == NULL )
+  if ( qgisModel == nullptr )
   {
     modelTo.insertRow( -1 );
     for ( int column = 1 ; column < modelFrom.columnCount() ; column++ )

src/app/qgslayerstylingwidget.cpp

@@ -361,7 +361,7 @@ void QgsLayerStylingWidget::updateCurrentWidgetLayer()
       {
         if ( !mLabelingWidget )
         {
-          mLabelingWidget = new QgsLabelingWidget( 0, mMapCanvas, mWidgetStack );
+          mLabelingWidget = new QgsLabelingWidget( nullptr, mMapCanvas, mWidgetStack );
           mLabelingWidget->setDockMode( true );
           connect( mLabelingWidget, &QgsLabelingWidget::widgetChanged, this, &QgsLayerStylingWidget::autoApply );
         }

src/core/geometry/qgsabstractgeometry.cpp

@@ -271,6 +271,6 @@ QgsAbstractGeometry *QgsAbstractGeometry::segmentize( double tolerance, Segmenta
 
 QgsAbstractGeometry *QgsAbstractGeometry::toCurveType() const
 {
-  return 0;
+  return nullptr;
 }
 

src/core/layout/qgslayoutitem.cpp

@@ -27,7 +27,7 @@
 
 QgsLayoutItem::QgsLayoutItem( QgsLayout *layout )
   : QgsLayoutObject( layout )
-  , QGraphicsRectItem( 0 )
+  , QGraphicsRectItem( nullptr )
   , mUuid( QUuid::createUuid().toString() )
 {
   setZValue( QgsLayout::ZItem );

src/core/qgscoordinatetransform_p.cpp

@@ -236,7 +236,7 @@ QString QgsCoordinateTransformPrivate::datumTransformString( int datumTransform
   QString transformString;
 
   sqlite3 *db = nullptr;
-  int openResult = sqlite3_open_v2( QgsApplication::srsDatabaseFilePath().toUtf8().constData(), &db, SQLITE_OPEN_READONLY, 0 );
+  int openResult = sqlite3_open_v2( QgsApplication::srsDatabaseFilePath().toUtf8().constData(), &db, SQLITE_OPEN_READONLY, nullptr );
   if ( openResult != SQLITE_OK )
   {
     sqlite3_close( db );

src/core/qgsziputils.cpp

@@ -68,7 +68,7 @@ bool QgsZipUtils::unzip( const QString &zipFilename, const QString &dir, QString
   int rc = 0;
   struct zip *z = zip_open( zipFilename.toStdString().c_str(), ZIP_CHECKCONS, &rc );
 
-  if ( rc == ZIP_ER_OK && z != NULL )
+  if ( rc == ZIP_ER_OK && z != nullptr )
   {
     int count = zip_get_num_files( z );
     if ( count != -1 )
@@ -130,7 +130,7 @@ bool QgsZipUtils::zip( const QString &zipFilename, const QStringList &files )
   int rc = 0;
   struct zip *z = zip_open( zipFilename.toStdString().c_str(), ZIP_CREATE, &rc );
 
-  if ( rc == ZIP_ER_OK && z != NULL )
+  if ( rc == ZIP_ER_OK && z != nullptr )
   {
     for ( const auto &file : files )
     {
@@ -144,7 +144,7 @@ bool QgsZipUtils::zip( const QString &zipFilename, const QStringList &files )
       }
 
       zip_source *src = zip_source_file( z, file.toStdString().c_str(), 0, 0 );
-      if ( src != NULL )
+      if ( src != nullptr )
       {
 #if LIBZIP_VERSION_MAJOR < 1
         int rc = ( int ) zip_add( z, fileInfo.fileName().toStdString().c_str(), src );

src/gui/qgsmapcanvastracer.cpp

@@ -56,7 +56,7 @@ QgsMapCanvasTracer::~QgsMapCanvasTracer()
 
 QgsMapCanvasTracer *QgsMapCanvasTracer::tracerForCanvas( QgsMapCanvas *canvas )
 {
-  return sTracers.value( canvas, 0 );
+  return sTracers.value( canvas, nullptr );
 }
 
 void QgsMapCanvasTracer::reportError( QgsTracer::PathError err, bool addingVertex )

src/gui/raster/qgsrasterhistogramwidget.cpp

@@ -502,7 +502,7 @@ void QgsRasterHistogramWidget::refreshHistogram()
       mypCurve->setPen( QPen( mHistoColors.at( myIteratorInt ) ) );
     }
 
-    QwtPlotHistogram *mypHisto = 0;
+    QwtPlotHistogram *mypHisto = nullptr;
     if ( ! myDrawLines )
     {
       mypHisto = new QwtPlotHistogram( tr( "Band %1" ).arg( myIteratorInt ) );

src/providers/gdal/qgsgdalprovider.cpp

@@ -1271,7 +1271,7 @@ bool QgsGdalProvider::hasHistogram( int bandNo,
   double myMinVal, myMaxVal;
   int myBinCount;
 
-  GUIntBig *myHistogramArray = 0;
+  GUIntBig *myHistogramArray = nullptr;
   CPLErr myError = GDALGetDefaultHistogramEx( myGdalBand, &myMinVal, &myMaxVal,
                    &myBinCount, &myHistogramArray, false,
                    nullptr, nullptr );