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list: add convenience function to get item by index

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This commit is contained in:
K. Lange 2020-03-28 22:19:52 +09:00
parent 715fec034b
commit 2cddc37a67
2 changed files with 10 additions and 0 deletions
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1
base/usr/include/toaru/list.h
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@ -42,6 +42,7 @@ extern node_t * list_pop(list_t * list);
extern node_t * list_dequeue(list_t * list);
extern list_t * list_copy(list_t * original);
extern void list_merge(list_t * target, list_t * source);
extern void * list_index(list_t * list, int index);
extern void list_append_after(list_t * list, node_t * before, node_t * node);
extern node_t * list_insert_after(list_t * list, node_t * before, void * item);

9
lib/list.c
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@ -166,6 +166,15 @@ int list_index_of(list_t * list, void * value) {
return -1; /* not find */
}
void * list_index(list_t * list, int index) {
int i = 0;
foreach(item, list) {
if (i == index) return item->value;
i++;
}
return NULL;
}
void list_remove(list_t * list, size_t index) {
/* remove index from the list */
if (index > list->length) return;