[processing] more robust CRS assignation for SAGA outputs

python/plugins/processing/algs/saga/SagaAlgorithm212.py

@@ -242,6 +242,13 @@ def processAlgorithm(self, progress):
             ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)
         SagaUtils.executeSaga(progress)
 
+        if self.crs is not None:
+            for out in self.outputs:
+                if isinstance(out, (OutputVector, OutputRaster)):
+                    prjFile = os.path.splitext(out.getCompatibleFileName(self))[0] + ".prj"
+                with open(prjFile, "w") as f:
+                    f.write(self.crs.toWkt())
+
 
     def preProcessInputs(self):
         name = self.commandLineName().replace('.', '_')[len('saga:'):]

python/plugins/processing/algs/saga/SagaAlgorithm213.py

@@ -194,4 +194,11 @@ def processAlgorithm(self, progress):
             ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)
         SagaUtils.executeSaga(progress)
 
+        if self.crs is not None:
+            for out in self.outputs:
+                if isinstance(out, (OutputVector, OutputRaster)):
+                    prjFile = os.path.splitext(out.getCompatibleFileName(self))[0] + ".prj"
+                with open(prjFile, "w") as f:
+                    f.write(self.crs.toWkt())
+