add some more list handling

[project/uci.git] / list.c

diff --git a/list.c b/list.c
index 43b58f4..f681611 100644 (file)
--- a/list.c
+++ b/list.c
@@ -12,3 +12,39 @@
  * GNU General Public License for more details.
  */
 
+/* initialize a list head/item */
+static inline void uci_list_init(struct uci_list *ptr)
+{
+       ptr->prev = ptr;
+       ptr->next = ptr;
+}
+
+/* inserts a new list entry between two consecutive entries */
+static inline void __uci_list_add(struct uci_list *prev, struct uci_list *next, struct uci_list *ptr)
+{
+       prev->next = ptr;
+       next->prev = ptr;
+       ptr->prev = prev;
+       ptr->next = next;
+}
+
+/* inserts a new list entry at the tail of the list */
+static inline void uci_list_add(struct uci_list *head, struct uci_list *ptr)
+{
+       /* NB: head->prev points at the tail */
+       __uci_list_add(head->prev, head, ptr);
+}
+
+
+static struct uci_config *uci_add_file(struct uci_context *ctx, const char *name)
+{
+       struct uci_config *cfg;
+
+       cfg = (struct uci_config *) uci_malloc(ctx, sizeof(struct uci_config));
+       uci_list_init(&cfg->list);
+       uci_list_init(&cfg->sections);
+       cfg->name = uci_strdup(ctx, name);
+       uci_list_add(&ctx->root, &cfg->list);
+
+       return cfg;
+}