/**
* @brief Insert a list element to the specified position
* @param list The list list pointer
* @param data The data for the new list
* @param pos The position to put the new list
* @return The new list list
*/
struct dlist *dlist_insert(struct dlist *list, void *data, int pos)
{
struct dlist *tmp = NULL, *next = NULL;
if (pos < 0)
return dlist_append(list, data);
else if (pos == 0)
return dlist_prepend(list, data);
tmp = dlist_nth(list, pos);
if (!tmp)
return dlist_append(list, data);
next = dlist_alloc();
next->data = data;
next->prev = tmp->prev;
if (tmp->prev)
tmp->prev->next = next;
next->next = tmp;
tmp->prev = next;
return (tmp == list) ? next : list;
}
dlist *
dlist_remove_nth(dlist *l, unsigned int n)
{
return dlist_remove(dlist_nth(l, n));
}
dlist *
dlist_remove_nth_free_data(dlist *l, unsigned int n)
{
return dlist_remove_free_data(dlist_nth(l, n));
}
