-int edge_name_compare(edge_t *a, edge_t *b)
-{
- int result;
- char *name_a1, *name_a2, *name_b1, *name_b2;
-
- if(strcmp(a->from->name, a->to->name) < 0)
- name_a1 = a->from->name, name_a2 = a->to->name;
- else
- name_a1 = a->to->name, name_a2 = a->from->name;
-
- if(strcmp(b->from->name, b->to->name) < 0)
- name_b1 = b->from->name, name_b2 = b->to->name;
- else
- name_b1 = b->to->name, name_b2 = b->from->name;
-
- result = strcmp(name_a1, name_b1);
-
- if(result)
- return result;
- else
- return strcmp(name_a2, name_b2);
-}