neta lib: fix return value

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@52135 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/vector/neta/utils.c

@@ -218,46 +218,47 @@ void NetA_varray_to_nodes(struct Map_info *map, struct varray *varray,
    \param cat ?
    \param[out] pointer to varray structure
 
-   \return ?
+   \return number of items set
+   \return -1 on error
  */
 int NetA_initialise_varray(struct Map_info *In, int layer, int mask_type,
 			   char *where, char *cat, struct varray **varray)
 {
+    int n, ni;
+    
+    n = Vect_get_num_lines(In);
+    *varray = Vect_new_varray(n);
+    ni = 0;
+    
     /* parse filter option and select appropriate lines */
     if (where) {
 	if (layer < 1)
 	    G_fatal_error(_("'%s' must be > 0 for '%s'"), "layer", "where");
 	if (cat)
 	    G_warning(_("'where' and 'cats' parameters were supplied, cat will be ignored"));
-	*varray = Vect_new_varray(Vect_get_num_lines(In));
-	if (Vect_set_varray_from_db
-	    (In, layer, where, mask_type, 1, *varray) == -1) {
+	ni = Vect_set_varray_from_db(In, layer, where, mask_type, 1, *varray);
+	if (ni == -1) {
 	    G_warning(_("Unable to load data from database"));
-	    return 0;
 	}
-	return 1;
+	return ni;
     }
     else if (cat) {
 	if (layer < 1)
 	    G_fatal_error(_("'%s' must be > 0 for '%s'"), "layer", "categories");
-	*varray = Vect_new_varray(Vect_get_num_lines(In));
-	if (Vect_set_varray_from_cat_string
-	    (In, layer, cat, mask_type, 1, *varray) == -1) {
+	ni = Vect_set_varray_from_cat_string(In, layer, cat, mask_type, 1, *varray);
+	if (ni == -1) {
 	    G_warning(_("Problem loading category values"));
-	    return 0;
 	}
-	return 1;
+	return ni;
     }
     else { /* all features of given layer */
-	int i, n, cat;
+	int i, cat;
 	int ltype;			/* line type */
 	struct line_cats *Cats;
 
 	if (layer < 1)
 	    G_fatal_error(_("'%s' must be > 0 for '%s'"), "layer", "categories");
 
-	n = Vect_get_num_lines(In);
-	*varray = Vect_new_varray(n);
 	Cats = Vect_new_cats_struct();
 
 	for (i = 1; i <= n; i++) {
@@ -266,13 +267,13 @@ int NetA_initialise_varray(struct Map_info *In, int layer, int mask_type,
 	    if (!(ltype & mask_type))
 		continue;	/* is not specified type */
 
-	    if (Vect_cat_get(Cats, layer, &cat))
+	    if (Vect_cat_get(Cats, layer, &cat)) {
 		(*varray)->c[i] = 1;
+		ni++;
+	    }
 	}
 	Vect_destroy_cats_struct(Cats);
 
-	return 2;
+	return ni;
     }
-
-
 }