Replace QString::null by QString() in core (deprecated since Qt 5.9)

python/core/auth/qgsauthconfig.sip

@@ -218,7 +218,7 @@ class QgsPkiBundle
 
     static const QgsPkiBundle fromPemPaths( const QString &certPath,
                                             const QString &keyPath,
-                                            const QString &keyPass = QString::null,
+                                            const QString &keyPass = QString(),
                                             const QList<QSslCertificate> &caChain = QList<QSslCertificate>() );
 %Docstring
  Construct a bundle of PKI components from PEM-formatted file paths
@@ -230,7 +230,7 @@ class QgsPkiBundle
 %End
 
     static const QgsPkiBundle fromPkcs12Paths( const QString &bundlepath,
-        const QString &bundlepass = QString::null );
+        const QString &bundlepass = QString() );
 %Docstring
  Construct a bundle of PKI components from a PKCS#12 file path
  \param bundlepath Bundle file path

python/core/auth/qgsauthmanager.sip

@@ -61,7 +61,7 @@ Name of the authentication database table that stores server exceptions/configs
  :rtype: str
 %End
 
-    bool init( const QString &pluginPath = QString::null );
+    bool init( const QString &pluginPath = QString() );
 %Docstring
 Initialize QCA, prioritize qca-ossl plugin and optionally set up the authentication database
  :rtype: bool
@@ -107,7 +107,7 @@ Standard message for when QCA's qca-ossl plugin is missing and system is disable
  :rtype: bool
 %End
 
-    bool verifyMasterPassword( const QString &compare = QString::null );
+    bool verifyMasterPassword( const QString &compare = QString() );
 %Docstring
  Verify the supplied master password against any existing hash in authentication database
 .. note::

python/core/qgscredentials.sip

@@ -31,7 +31,7 @@ class QgsCredentials
 
     virtual ~QgsCredentials();
 
-    bool get( const QString &realm, QString &username /In,Out/, QString &password /In,Out/, const QString &message = QString::null );
+    bool get( const QString &realm, QString &username /In,Out/, QString &password /In,Out/, const QString &message = QString() );
 %Docstring
  :rtype: bool
 %End
@@ -72,7 +72,7 @@ retrieves instance
   protected:
     QgsCredentials();
 
-    virtual bool request( const QString &realm, QString &username /In,Out/, QString &password /In,Out/, const QString &message = QString::null ) = 0;
+    virtual bool request( const QString &realm, QString &username /In,Out/, QString &password /In,Out/, const QString &message = QString() ) = 0;
 %Docstring
 request a password
  :rtype: bool
@@ -115,7 +115,7 @@ signals that object will be destroyed and shouldn't be used anymore
 %End
 
   protected:
-    virtual bool request( const QString &realm, QString &username /In,Out/, QString &password /In,Out/, const QString &message = QString::null );
+    virtual bool request( const QString &realm, QString &username /In,Out/, QString &password /In,Out/, const QString &message = QString() );
     virtual bool requestMasterPassword( QString &password /In,Out/, bool stored = false );
 };
 
@@ -143,7 +143,7 @@ signals that object will be destroyed and shouldn't be used anymore
 %End
 
   protected:
-    virtual bool request( const QString &realm, QString &username /In,Out/, QString &password /In,Out/, const QString &message = QString::null );
+    virtual bool request( const QString &realm, QString &username /In,Out/, QString &password /In,Out/, const QString &message = QString() );
     virtual bool requestMasterPassword( QString &password /In,Out/, bool stored = false );
 };
 

python/core/qgsdataitem.sip

@@ -447,7 +447,7 @@ class QgsDataCollectionItem : QgsDataItem
 #include "qgsdataitem.h"
 %End
   public:
-    QgsDataCollectionItem( QgsDataItem *parent, const QString &name, const QString &path = QString::null );
+    QgsDataCollectionItem( QgsDataItem *parent, const QString &name, const QString &path = QString() );
     ~QgsDataCollectionItem();
 
     void addChild( QgsDataItem *item /Transfer/ );

python/core/qgserror.sip

@@ -28,7 +28,7 @@ class QgsErrorMessage
 
     QgsErrorMessage();
 
-    QgsErrorMessage( const QString &message, const QString &tag = QString::null, const QString &file = QString::null, const QString &function = QString::null, int line = 0 );
+    QgsErrorMessage( const QString &message, const QString &tag = QString(), const QString &file = QString(), const QString &function = QString(), int line = 0 );
 %Docstring
  Constructor.
   \param message error message string

python/core/qgsmultirenderchecker.sip

@@ -60,7 +60,7 @@ class QgsMultiRenderChecker
 
     void setRenderedImage( const QString &renderedImagePath );
 %Docstring
- Set the path to the rendered image. If this is not set or set to QString.Null, an image
+ Set the path to the rendered image. If this is not set or set to null QString, an image
  will be rendered based on the provided mapsettings
 
  \param renderedImagePath A path to the rendered image with which control images will be compared

python/core/qgsproject.sip

@@ -268,7 +268,7 @@ Returns the QgsProject singleton instance
  :rtype: list of str
 %End
 
-    QString readEntry( const QString &scope, const QString &key, const QString &def = QString::null, bool *ok = 0 ) const;
+    QString readEntry( const QString &scope, const QString &key, const QString &def = QString(), bool *ok = 0 ) const;
 %Docstring
  :rtype: str
 %End
@@ -411,7 +411,7 @@ Convenience function to query topological editing status
     QString homePath() const;
 %Docstring
  Return project's home path
-:return: home path of project (or QString.null if not set) *
+:return: home path of project (or null QString if not set) *
  :rtype: str
 %End
 

python/core/qgsproviderregistry.sip

@@ -42,7 +42,7 @@ class QgsProviderRegistry
       Manager,
     };
 
-    static QgsProviderRegistry *instance( const QString &pluginPath = QString::null );
+    static QgsProviderRegistry *instance( const QString &pluginPath = QString() );
 %Docstring
 Means of accessing canonical single instance
  :rtype: QgsProviderRegistry

python/core/qgsvectorlayer.sip

@@ -890,7 +890,7 @@ Return the provider type for this layer
     virtual QString subsetString() const;
 %Docstring
  Get the string (typically sql) used to define a subset of the layer
- :return: The subset string or QString.null if not implemented by the provider
+ :return: The subset string or null QString if not implemented by the provider
  :rtype: str
 %End
 

src/core/auth/qgsauthconfig.cpp

@@ -299,7 +299,7 @@ const QString QgsPkiBundle::certId() const
 {
   if ( mCert.isNull() )
   {
-    return QString::null;
+    return QString();
   }
   return QString( mCert.digest( QCryptographicHash::Sha1 ).toHex() );
 }

src/core/auth/qgsauthconfig.h

@@ -207,7 +207,7 @@ class CORE_EXPORT QgsPkiBundle
      */
     static const QgsPkiBundle fromPemPaths( const QString &certPath,
                                             const QString &keyPath,
-                                            const QString &keyPass = QString::null,
+                                            const QString &keyPass = QString(),
                                             const QList<QSslCertificate> &caChain = QList<QSslCertificate>() );
 
     /**
@@ -216,7 +216,7 @@ class CORE_EXPORT QgsPkiBundle
      * \param bundlepass Optional bundle passphrase
      */
     static const QgsPkiBundle fromPkcs12Paths( const QString &bundlepath,
-        const QString &bundlepass = QString::null );
+        const QString &bundlepass = QString() );
 
     //! Whether the bundle, either its certificate or private key, is null
     bool isNull() const;

src/core/auth/qgsauthmanager.h

@@ -89,7 +89,7 @@ class CORE_EXPORT QgsAuthManager : public QObject
     const QString authDatabaseServersTable() const { return AUTH_SERVERS_TABLE; }
 
     //! Initialize QCA, prioritize qca-ossl plugin and optionally set up the authentication database
-    bool init( const QString &pluginPath = QString::null );
+    bool init( const QString &pluginPath = QString() );
 
     //! Whether QCA has the qca-ossl plugin, which a base run-time requirement
     bool isDisabled() const;
@@ -119,7 +119,7 @@ class CORE_EXPORT QgsAuthManager : public QObject
      * \note Do not emit verification signals when only comparing
      * \param compare Password to compare against
      */
-    bool verifyMasterPassword( const QString &compare = QString::null );
+    bool verifyMasterPassword( const QString &compare = QString() );
 
     //! Whether master password has be input and verified, i.e. authentication database is accessible
     bool masterPasswordIsSet() const;
@@ -639,7 +639,7 @@ class CORE_EXPORT QgsAuthManager : public QObject
 
     bool masterPasswordRowsInDb( int *rows ) const;
 
-    bool masterPasswordCheckAgainstDb( const QString &compare = QString::null ) const;
+    bool masterPasswordCheckAgainstDb( const QString &compare = QString() ) const;
 
     bool masterPasswordStoreInDb() const;
 

src/core/auth/qgsauthmethodregistry.h

@@ -44,7 +44,7 @@ class CORE_EXPORT QgsAuthMethodRegistry
 
   public:
     //! Means of accessing canonical single instance
-    static QgsAuthMethodRegistry *instance( const QString &pluginPath = QString::null );
+    static QgsAuthMethodRegistry *instance( const QString &pluginPath = QString() );
 
     //! Virtual dectructor
     virtual ~QgsAuthMethodRegistry();

src/core/dxf/qgsdxfexport.cpp

@@ -4262,7 +4262,7 @@ QString QgsDxfExport::dxfEncoding( const QString &name )
     return DXF_ENCODINGS[i][0];
   }
 
-  return QString::null;
+  return QString();
 }
 
 QStringList QgsDxfExport::encodings()

src/core/expression/qgsexpression.h

@@ -474,7 +474,7 @@ class CORE_EXPORT QgsExpression
 
     struct HelpExample SIP_SKIP
     {
-      HelpExample( const QString &expression, const QString &returns, const QString &note = QString::null )
+      HelpExample( const QString &expression, const QString &returns, const QString &note = QString() )
         : mExpression( expression )
         , mReturns( returns )
         , mNote( note )
@@ -491,7 +491,7 @@ class CORE_EXPORT QgsExpression
                    const QList<QgsExpression::HelpArg> &arguments = QList<QgsExpression::HelpArg>(),
                    bool variableLenArguments = false,
                    const QList<QgsExpression::HelpExample> &examples = QList<QgsExpression::HelpExample>(),
-                   const QString &notes = QString::null )
+                   const QString &notes = QString() )
         : mName( name )
         , mDescription( description )
         , mArguments( arguments )

src/core/geometry/qgswkbtypes.cpp

@@ -121,7 +121,7 @@ QString QgsWkbTypes::displayString( Type type )
   QMap< Type, wkbEntry >::const_iterator it = ENTRIES.constFind( type );
   if ( it == ENTRIES.constEnd() )
   {
-    return QString::null;
+    return QString();
   }
   return it->mName;
 }

src/core/qgscredentials.h

@@ -43,7 +43,7 @@ class CORE_EXPORT QgsCredentials
 
     virtual ~QgsCredentials() = default;
 
-    bool get( const QString &realm, QString &username SIP_INOUT, QString &password SIP_INOUT, const QString &message = QString::null );
+    bool get( const QString &realm, QString &username SIP_INOUT, QString &password SIP_INOUT, const QString &message = QString() );
     void put( const QString &realm, const QString &username, const QString &password );
 
     bool getMasterPassword( QString &password SIP_INOUT, bool stored = false );
@@ -75,7 +75,7 @@ class CORE_EXPORT QgsCredentials
     QgsCredentials();
 
     //! request a password
-    virtual bool request( const QString &realm, QString &username SIP_INOUT, QString &password SIP_INOUT, const QString &message = QString::null ) = 0;
+    virtual bool request( const QString &realm, QString &username SIP_INOUT, QString &password SIP_INOUT, const QString &message = QString() ) = 0;
 
     //! request a master password
     virtual bool requestMasterPassword( QString &password SIP_INOUT, bool stored = false ) = 0;
@@ -117,7 +117,7 @@ class CORE_EXPORT QgsCredentialsNone : public QObject, public QgsCredentials
     void destroyed();
 
   protected:
-    virtual bool request( const QString &realm, QString &username SIP_INOUT, QString &password SIP_INOUT, const QString &message = QString::null ) override;
+    virtual bool request( const QString &realm, QString &username SIP_INOUT, QString &password SIP_INOUT, const QString &message = QString() ) override;
     virtual bool requestMasterPassword( QString &password SIP_INOUT, bool stored = false ) override;
 };
 
@@ -141,7 +141,7 @@ class CORE_EXPORT QgsCredentialsConsole : public QObject, public QgsCredentials
     void destroyed();
 
   protected:
-    virtual bool request( const QString &realm, QString &username SIP_INOUT, QString &password SIP_INOUT, const QString &message = QString::null ) override;
+    virtual bool request( const QString &realm, QString &username SIP_INOUT, QString &password SIP_INOUT, const QString &message = QString() ) override;
     virtual bool requestMasterPassword( QString &password SIP_INOUT, bool stored = false ) override;
 };
 

src/core/qgsdataitem.h

@@ -403,7 +403,7 @@ class CORE_EXPORT QgsDataCollectionItem : public QgsDataItem
 {
     Q_OBJECT
   public:
-    QgsDataCollectionItem( QgsDataItem *parent, const QString &name, const QString &path = QString::null );
+    QgsDataCollectionItem( QgsDataItem *parent, const QString &name, const QString &path = QString() );
     ~QgsDataCollectionItem();
 
     void addChild( QgsDataItem *item SIP_TRANSFER ) { mChildren.append( item ); }

src/core/qgsdataprovider.h

@@ -207,7 +207,7 @@ class CORE_EXPORT QgsDataProvider : public QObject
      */
     virtual QString subsetString() const
     {
-      return QString::null;
+      return QString();
     }
 
 

src/core/qgsdatasourceuri.cpp

@@ -122,7 +122,7 @@ QgsDataSourceUri::QgsDataSourceUri( QString uri )
         }
         else
         {
-          mGeometryColumn = QString::null;
+          mGeometryColumn = QString();
         }
       }
       else if ( pname == QLatin1String( "key" ) )

src/core/qgseditformconfig_p.h

@@ -27,7 +27,7 @@ class QgsEditFormConfigPrivate : public QSharedData
 {
   public:
     QgsEditFormConfigPrivate()
-      : mInvisibleRootContainer( new QgsAttributeEditorContainer( QString::null, nullptr ) )
+      : mInvisibleRootContainer( new QgsAttributeEditorContainer( QString(), nullptr ) )
       , mConfiguredRootContainer( false )
       , mEditorLayout( QgsEditFormConfig::GeneratedLayout )
       , mInitCodeSource( QgsEditFormConfig::CodeSourceNone )

src/core/qgserror.h

@@ -50,7 +50,7 @@ class CORE_EXPORT QgsErrorMessage
      *  \param function the function where error was created
      *  \param line the line where error was created
      */
-    QgsErrorMessage( const QString &message, const QString &tag = QString::null, const QString &file = QString::null, const QString &function = QString::null, int line = 0 );
+    QgsErrorMessage( const QString &message, const QString &tag = QString(), const QString &file = QString(), const QString &function = QString(), int line = 0 );
 
     QString message() const { return mMessage; }
     QString tag() const { return mTag; }

src/core/qgsfeature.cpp

@@ -205,7 +205,7 @@ bool QgsFeature::setAttribute( int idx, const QVariant &value )
 {
   if ( idx < 0 || idx >= d->attributes.size() )
   {
-    QgsMessageLog::logMessage( QObject::tr( "Attribute index %1 out of bounds [0;%2]" ).arg( idx ).arg( d->attributes.size() ), QString::null, QgsMessageLog::WARNING );
+    QgsMessageLog::logMessage( QObject::tr( "Attribute index %1 out of bounds [0;%2]" ).arg( idx ).arg( d->attributes.size() ), QString(), QgsMessageLog::WARNING );
     return false;
   }
 

src/core/qgsmultirenderchecker.h

@@ -66,7 +66,7 @@ class CORE_EXPORT QgsMultiRenderChecker
     void setControlPathPrefix( const QString &prefix );
 
     /**
-     * Set the path to the rendered image. If this is not set or set to QString::Null, an image
+     * Set the path to the rendered image. If this is not set or set to null QString, an image
      * will be rendered based on the provided mapsettings
      *
      * \param renderedImagePath A path to the rendered image with which control images will be compared

src/core/qgsogrutils.cpp

@@ -170,7 +170,7 @@ QVariant QgsOgrUtils::getOgrFeatureAttribute( OGRFeatureH ogrFet, const QgsField
   }
   else
   {
-    value = QVariant( QString::null );
+    value = QVariant( QString() );
   }
 
   return value;

src/core/qgsproject.cpp

@@ -97,7 +97,7 @@ QStringList makeKeyTokens_( const QString &scope, const QString &key )
     {
 
       QString errorString = QObject::tr( "Entry token invalid : '%1'. The token will not be saved to file." ).arg( keyToken );
-      QgsMessageLog::logMessage( errorString, QString::null, QgsMessageLog::CRITICAL );
+      QgsMessageLog::logMessage( errorString, QString(), QgsMessageLog::CRITICAL );
 
     }
 
@@ -1945,7 +1945,7 @@ QString QgsProject::homePath() const
 {
   QFileInfo pfi( fileName() );
   if ( !pfi.exists() )
-    return QString::null;
+    return QString();
 
   return pfi.canonicalPath();
 }

src/core/qgsproject.h

@@ -273,7 +273,7 @@ class CORE_EXPORT QgsProject : public QObject, public QgsExpressionContextGenera
      */
     QStringList readListEntry( const QString &scope, const QString &key, const QStringList &def = QStringList(), bool *ok = nullptr ) const;
 
-    QString readEntry( const QString &scope, const QString &key, const QString &def = QString::null, bool *ok = nullptr ) const;
+    QString readEntry( const QString &scope, const QString &key, const QString &def = QString(), bool *ok = nullptr ) const;
     int readNumEntry( const QString &scope, const QString &key, int def = 0, bool *ok = nullptr ) const;
     double readDoubleEntry( const QString &scope, const QString &key, double def = 0, bool *ok = nullptr ) const;
     bool readBoolEntry( const QString &scope, const QString &key, bool def = false, bool *ok = nullptr ) const;
@@ -377,7 +377,7 @@ class CORE_EXPORT QgsProject : public QObject, public QgsExpressionContextGenera
     void setAreaUnits( QgsUnitTypes::AreaUnit unit );
 
     /** Return project's home path
-      \returns home path of project (or QString::null if not set) */
+      \returns home path of project (or null QString if not set) */
     QString homePath() const;
 
     QgsRelationManager *relationManager() const;

src/core/qgsprojectbadlayerhandler.cpp

@@ -33,7 +33,7 @@ QgsProjectBadLayerHandler::DataType QgsProjectBadLayerHandler::dataType( const Q
 {
   QString type = layerNode.toElement().attribute( QStringLiteral( "type" ) );
 
-  if ( QString::null == type )
+  if ( type.isNull() )
   {
     QgsDebugMsg( "cannot find ``type'' attribute" );
 
@@ -66,7 +66,7 @@ QString QgsProjectBadLayerHandler::dataSource( const QDomNode &layerNode )
   {
     QgsDebugMsg( "cannot find datasource node" );
 
-    return QString::null;
+    return QString();
   }
 
   return dataSourceNode.toElement().text();