parser_factory now returns the mtype too

src/parser_factory.py

@@ -15,6 +15,6 @@ def get_parser(filename: str):
     mtype, _ = mimetypes.guess_type(filename)
     for c in abstract.AbstractParser.__subclasses__():
         if mtype in c.mimetypes:
-            return c(filename)
+            return c(filename), mtype
     print('factory: %s is not supported' % mtype)
-    return None
+    return None, mtype