changed how default ostream measreuemnts result formatting works

alib2measure/src/measurements/MeasurementResults.cpp

@@ -110,7 +110,13 @@ void MeasurementResults::print_as_tree ( std::ostream & os, unsigned idx, std::s
 const int MeasurementXalloc::FORMAT = std::ios::xalloc ( );
 std::ostream & operator <<( std::ostream & os, const MeasurementResults & mr ) {
-	MeasurementFormat mf = static_cast < MeasurementFormat > ( os.iword ( MeasurementXalloc::FORMAT ) );
+	MeasurementFormat mf = MeasurementFormat::XML;
+
+	int os_format = os.iword ( MeasurementXalloc::FORMAT );
+
+	// if format was set, use that format, otherwise default to XML
+	if ( os_format )
+		mf = static_cast < MeasurementFormat > ( os_format );
 	switch ( mf ) {
 	case MeasurementFormat::LIST:
@@ -121,7 +127,7 @@ std::ostream & operator <<( std::ostream & os, const MeasurementResults & mr ) {
 		mr.print_as_tree ( os );
 		break;
-	default: /* MeasurementFormat::XML: */
+	case MeasurementFormat::XML:
 		sax::SaxComposeInterface::printStream ( os, mr.xml_tokens ( ) );
 		break;
 	}