[Server][WFS] Define encodeValueToText to correctly format field values

Author: rldhont

src/server/services/wfs/qgswfsgetfeature.cpp

@@ -62,6 +62,8 @@ namespace QgsWfs
 
     QString createFeatureGeoJSON( QgsFeature *feat, const createFeatureParams &params );
 
+    QString encodeValueToText( const QVariant &value );
+
     QDomElement createFeatureGML2( QgsFeature *feat, QDomDocument &doc, const createFeatureParams &params, const QgsProject *project );
 
     QDomElement createFeatureGML3( QgsFeature *feat, QDomDocument &doc, const createFeatureParams &params, const QgsProject *project );
@@ -1338,7 +1340,7 @@ namespace QgsWfs
         QString attributeName = fields.at( idx ).name();
 
         QDomElement fieldElem = doc.createElement( "qgs:" + attributeName.replace( ' ', '_' ).replace( cleanTagNameRegExp, QString() ) );
-        QDomText fieldText = doc.createTextNode( featureAttributes[idx].toString() );
+        QDomText fieldText = doc.createTextNode( encodeValueToText( featureAttributes[idx] ) );
         fieldElem.appendChild( fieldText );
         typeNameElement.appendChild( fieldElem );
       }
@@ -1433,15 +1435,57 @@ namespace QgsWfs
         QString attributeName = fields.at( idx ).name();
 
         QDomElement fieldElem = doc.createElement( "qgs:" + attributeName.replace( ' ', '_' ).replace( cleanTagNameRegExp, QString() ) );
-        QDomText fieldText = doc.createTextNode( featureAttributes[idx].toString() );
+        QDomText fieldText = doc.createTextNode( encodeValueToText( featureAttributes[idx] ) );
         fieldElem.appendChild( fieldText );
         typeNameElement.appendChild( fieldElem );
       }
 
       return featureElement;
     }
 
+    QString encodeValueToText( const QVariant &value )
+    {
+      if ( value.isNull() )
+        return QStringLiteral( "null" );
+
+      switch ( value.type() )
+      {
+        case QVariant::Int:
+        case QVariant::UInt:
+        case QVariant::LongLong:
+        case QVariant::ULongLong:
+        case QVariant::Double:
+          return value.toString();
+
+        case QVariant::Bool:
+          return value.toBool() ? QStringLiteral( "true" ) : QStringLiteral( "false" );
+
+        case QVariant::StringList:
+        case QVariant::List:
+        case QVariant::Map:
+        {
+          QString v = QgsJsonUtils::encodeValue( value );
+
+          //do we need CDATA
+          if ( v.indexOf( '<' ) != -1 || v.indexOf( '&' ) != -1 )
+            v.prepend( QStringLiteral( "<![CDATA[" ) ).append( QStringLiteral( "]]>" ) );
+
+          return v;
+        }
+
+        default:
+        case QVariant::String:
+        {
+          QString v = value.toString();
+
+          //do we need CDATA
+          if ( v.indexOf( '<' ) != -1 || v.indexOf( '&' ) != -1 )
+            v.prepend( QStringLiteral( "<![CDATA[" ) ).append( QStringLiteral( "]]>" ) );
 
+          return v;
+        }
+      }
+    }
 
 
   } // namespace