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path: root/lib/libalpm/alpm_list.c
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-rw-r--r--lib/libalpm/alpm_list.c55
1 files changed, 42 insertions, 13 deletions
diff --git a/lib/libalpm/alpm_list.c b/lib/libalpm/alpm_list.c
index 26fcb3dc..edb2e8e5 100644
--- a/lib/libalpm/alpm_list.c
+++ b/lib/libalpm/alpm_list.c
@@ -49,33 +49,37 @@ alpm_list_t *alpm_list_new()
return(list);
}
-/** Free a list structure and possibly the internal data as well
+/** Free a list, but not the contained data
* @param list the list to free
- * @param fn a free function for the internal data, or NULL for none
*/
-void alpm_list_free(alpm_list_t *list, alpm_list_fn_free fn)
+void alpm_list_free(alpm_list_t *list)
{
alpm_list_t *it = list;
while(it) {
- alpm_list_t *ptr = it->next;
- if(fn && it->data) {
- fn(it->data);
- }
- FREE(it);
- it = ptr;
+ alpm_list_t *tmp = it->next;
+ free(it);
+ it = tmp;
}
}
-/** Free the outer list, but not the contained data
- * A minor simplification of alpm_list_free
+/** Free the internal data of a list structure
* @param list the list to free
+ * @param fn a free function for the internal data
*/
-void alpm_list_free_outer(alpm_list_t *list)
+void alpm_list_free_inner(alpm_list_t *list, alpm_list_fn_free fn)
{
- alpm_list_free(list, NULL);
+ alpm_list_t *it = list;
+
+ while(it) {
+ if(fn && it->data) {
+ fn(it->data);
+ }
+ it = it->next;
+ }
}
+
/* Mutators */
/** Add a new item to the list
@@ -271,6 +275,31 @@ alpm_list_t *alpm_list_remove(alpm_list_t *haystack, void *needle, alpm_list_fn_
return(haystack);
}
+/** Remove the passed in node from the list that it is a part of
+ * @note this DOES NOT free the node
+ * @param node the list node we're removing
+ * @return the node which took the place of this one
+ */
+alpm_list_t *alpm_list_remove_node(alpm_list_t *node)
+{
+ if(!node) return(NULL);
+
+ alpm_list_t *ret = NULL;
+
+ if(node->prev) {
+ node->prev->next = node->next;
+ ret = node->prev;
+ node->prev = NULL;
+ }
+ if(node->next) {
+ node->next->prev = node->prev;
+ ret = node->next;
+ node->next = NULL;
+ }
+
+ return(ret);
+}
+
/** Create a new list without any duplicates
* @note DOES NOT copy data members
* @param list the list to copy