New API call Xorriso__severity_cmp()

libisoburn/trunk/xorriso/xorriso.h

@@ -524,10 +524,21 @@ int Xorriso_set_problem_status(struct XorrisO *xorriso, char *severity,
                                int flag);
 
 
-/* The next two functions are part of Xorriso_eval_problem_status().
+/* The next three functions are part of Xorriso_eval_problem_status().
    You may use them to build an own advisor function.
 */
 
+/** Compare two severity texts for their severeness.
+    @since 1.2.6
+    @param sev1  First severity text to compare
+    @param sev2  Second severity text to compare
+    @return      -1 sev1 is less severe than sev2
+                  0 sev1 is equally severe to sev2
+                  1 sev1 is more severe than sev2
+*/
+int Xorriso__severity_cmp(char *sev1, char *sev2);
+
+
 /** Obtain the current problem status of the xorriso handle.
     @param xorriso    The environment handle
     @param severity   The severity text matching the current problem status