Update list (extra) foreach implementation

src/list/extra.c

@@ -163,20 +163,40 @@ _Bool libcdsb_list_update(list_t* x, ssize_t i, const void* v, vtype t, int ins)
 /*#####################################################################################################################*/
 
 
-int libcdsb_list_foreach(const vtype_list* x, void* data, int (*callback)(void* value, ssize_t index, vtype type, void* data)) {
+int libcdsb_list_foreach(vtype_list* x, void* data, list_foreach_callback callback, _Bool flush) {
 
+    lnode_t* n;
     lnode_t* c;
-    size_t   n;
+    size_t   i;
     int      r;
 
     c = x->first;
-    n = 0;
+    i = 0;
 
     while (!is_null(c)) {
-        if ((r = callback(vnode_peek(&c->node, c->type), n, c->type, data)) != 0)
-            return r;
-        c = c->next;
-        ++n;
+        if ((r = callback(vnode_peek(&c->node, c->type), i, c->type, data)) != 0)
+            break;
+
+        n = c->next;
+        
+        if (flush) {
+            vnode_free(&c->node, c->type);
+            free(c);
+        }
+
+        c = n;
+        ++i;
+    }
+
+    if (flush) {
+        while(!is_null(c)) {
+            n = c->next;
+            vnode_free(&c->node, c->type);
+            free(c);
+            c = n;
+        }
+
+        memset(x, 0, sizeof(*x));
     }
 
     return 0;