Further fixes for selective GDAL driver support (in progress)

src/app/main.cpp

@@ -479,11 +479,12 @@ int main( int argc, char *argv[] )
   QApplication::setStyle( new QPlastiqueStyle );
 #endif
 
-  QString i18nPath = QgsApplication::i18nPath();
+  QSettings mySettings;
+
 
   /* Translation file for QGIS.
    */
-  QSettings mySettings;
+  QString i18nPath = QgsApplication::i18nPath();
   QString myUserLocale = mySettings.value( "locale/userLocale", "" ).toString();
   bool myLocaleOverrideFlag = mySettings.value( "locale/overrideFlag", false ).toBool();
   QString myLocale;

src/app/qgisapp.cpp

@@ -531,6 +531,7 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, QWidget * parent,
   qApp->processEvents();
   // now build vector file filter
   mVectorFileFilter = QgsProviderRegistry::instance()->fileVectorFilters();
+
   // now build raster file filter
   QgsRasterLayer::buildSupportedRasterFileFilter( mRasterFileFilter );
 

src/app/qgsoptions.cpp

@@ -1040,8 +1040,15 @@ void QgsOptions::loadGdalDriverList()
     myGdalDriverDescription = GDALGetDescription( myGdalDriver );
     myDrivers << myGdalDriverDescription;
   }
-  QStringListIterator myIterator( myDrivers );
+  // add the skipped drivers to the list too in case their drivers are 
+  // already unloaded...may result in false positive if underlying
+  // sys config has changed and that driver no longer exists...
+  myDrivers.append( mySkippedDrivers );
+  myDrivers.removeDuplicates();
   myDrivers.sort();
+
+  QStringListIterator myIterator( myDrivers );
+
   while (myIterator.hasNext())
   {
     QString myName = myIterator.next();
@@ -1072,4 +1079,6 @@ void QgsOptions::saveGdalDriverList()
       QgsApplication::restoreGdalDriver( mypItem->text() );
     }
   }
+  QSettings mySettings;
+  mySettings.setValue( "gdal/skipList", QgsApplication::skippedGdalDrivers().join(" ") );
 }

src/core/qgsapplication.cpp

@@ -744,12 +744,7 @@ void QgsApplication::applyGdalSkippedDrivers()
   QString myDriverList = mGdalSkipList.join(" ");
   QgsDebugMsg( "Gdal Skipped driver list set to:" );
   QgsDebugMsg( myDriverList );
-#if defined(Q_WS_WIN32) || defined(WIN32)
   CPLSetConfigOption("GDAL_SKIP", myDriverList.toUtf8());
-#else
-  int myChangeFlag = 1; //whether we want to force the env var to change
-  setenv( "GDAL_SKIP", myDriverList.toUtf8(), myChangeFlag );
-#endif
   GDALDriverManager myDriverManager;
-  myDriverManager.AutoLoadDrivers();
+  myDriverManager.AutoSkipDrivers();
 }