+int match_xsd_string(xmlNodePtr ptr, const char *elem, ODR o, char **val);
+int match_xsd_integer(xmlNodePtr ptr, const char *elem, ODR o, Odr_int **val);
+int match_xsd_string_n(xmlNodePtr ptr, const char *elem, ODR o,
+ char **val, int *len);
+int match_element(xmlNodePtr ptr, const char *elem);
+