diff options
Diffstat (limited to 'src/llist.c')
-rw-r--r-- | src/llist.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/src/llist.c b/src/llist.c index eeded6b..a85cfa9 100644 --- a/src/llist.c +++ b/src/llist.c @@ -43,6 +43,7 @@ void llist_init (llist_t *l) { l->head = NULL; + l->tail = NULL; } /* @@ -60,6 +61,7 @@ llist_free (llist_t *l) } l->head = NULL; + l->tail = NULL; } /* @@ -113,6 +115,19 @@ llist_next (llist_item_t *i) } /* + * Return the successor of a list item if it is matched by some filter + * callback. Return NULL otherwise. + */ +llist_item_t * +llist_next_filter (llist_item_t *i, long data, llist_fn_match_t fn_match) +{ + if (i && i->next && fn_match (i->next->data, data)) + return i->next; + else + return NULL; +} + +/* * Get the actual data of an item. */ void * @@ -128,7 +143,6 @@ void llist_add (llist_t *l, void *data) { llist_item_t *o = mem_malloc (sizeof (llist_item_t)); - llist_item_t *i; if (o) { @@ -136,12 +150,11 @@ llist_add (llist_t *l, void *data) o->next = NULL; if (!l->head) - l->head = o; + l->head = l->tail = o; else { - for (i = l->head; i->next; i = i->next) - ; - i->next = o; + l->tail->next = o; + l->tail = o; } } } @@ -161,7 +174,12 @@ llist_add_sorted (llist_t *l, void *data, llist_fn_cmp_t fn_cmp) o->next = NULL; if (!l->head) - l->head = o; + l->head = l->tail = o; + else if (fn_cmp(o->data, l->tail->data) >= 0) + { + l->tail->next = o; + l->tail = o; + } else if (fn_cmp(o->data, l->head->data) < 0) { o->next = l->head; @@ -198,6 +216,9 @@ llist_remove (llist_t *l, llist_item_t *i) { if (j) j->next = i->next; + if (i == l->tail) + l->tail = j; + mem_free (i); } } |