Stabilize XML for layer settings and map themes

m-kuhn · m-kuhn · commit 4fc6176f5f32 · 2019-04-09T16:02:21.000+02:00
diff --git a/src/core/qgsmapthemecollection.cpp b/src/core/qgsmapthemecollection.cpp
@@ -527,11 +527,14 @@ void QgsMapThemeCollection::readXml( const QDomDocument &doc )
 void QgsMapThemeCollection::writeXml( QDomDocument &doc )
 {
   QDomElement visPresetsElem = doc.createElement( QStringLiteral( "visibility-presets" ) );
-  MapThemeRecordMap::const_iterator it = mMapThemes.constBegin();
-  for ( ; it != mMapThemes.constEnd(); ++ it )
+
+  const auto keys = mMapThemes.keys();
+
+  std::sort( keys.begin(), keys.end() );
+
+  for ( const QString &grpName : qgis::as_const( keys ) )
   {
-    QString grpName = it.key();
-    const MapThemeRecord &rec = it.value();
+    const MapThemeRecord &rec = mMapThemes.value( grpName );
     QDomElement visPresetElem = doc.createElement( QStringLiteral( "visibility-preset" ) );
     visPresetElem.setAttribute( QStringLiteral( "name" ), grpName );
     if ( rec.hasExpandedStateInfo() )
diff --git a/src/core/qgsobjectcustomproperties.cpp b/src/core/qgsobjectcustomproperties.cpp
@@ -16,6 +16,7 @@
  ***************************************************************************/
 
 #include "qgsobjectcustomproperties.h"
+#include "qgis.h"
 
 #include <QDomNode>
 #include <QStringList>
@@ -118,17 +119,22 @@ void QgsObjectCustomProperties::writeXml( QDomNode &parentNode, QDomDocument &do
 
   QDomElement propsElement = doc.createElement( QStringLiteral( "customproperties" ) );
 
-  for ( QMap<QString, QVariant>::const_iterator it = mMap.constBegin(); it != mMap.constEnd(); ++it )
+  auto keys = mMap.keys();
+
+  std::sort( keys.begin(), keys.end() );
+
+  for ( const auto &key : qgis::as_const( keys ) )
   {
     QDomElement propElement = doc.createElement( QStringLiteral( "property" ) );
-    propElement.setAttribute( QStringLiteral( "key" ), it.key() );
-    if ( it.value().canConvert<QString>() )
+    propElement.setAttribute( QStringLiteral( "key" ), key );
+    const QVariant value = mMap.value( key );
+    if ( value.canConvert<QString>() )
     {
-      propElement.setAttribute( QStringLiteral( "value" ), it.value().toString() );
+      propElement.setAttribute( QStringLiteral( "value" ), value.toString() );
     }
-    else if ( it.value().canConvert<QStringList>() )
+    else if ( value.canConvert<QStringList>() )
     {
-      const auto constToStringList = it.value().toStringList();
+      const auto constToStringList = value.toStringList();
       for ( const QString &value : constToStringList )
       {
         QDomElement itemElement = doc.createElement( QStringLiteral( "value" ) );
