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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2012 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <mailutils/sys/list.h>
#include <mailutils/errno.h>
int
mu_list_remove_nth (mu_list_t list, size_t n)
{
struct list_data *current;
int status = MU_ERR_NOENT;
size_t i;
if (list == NULL)
return EINVAL;
if (n >= list->count)
return ERANGE;
mu_monitor_wrlock (list->monitor);
for (current = list->head.next, i = 0; current != &list->head;
current = current->next, i++)
{
if (i == n)
{
struct list_data *previous = current->prev;
mu_iterator_delitem (list->itr, current);
previous->next = current->next;
current->next->prev = previous;
DESTROY_ITEM (list, current);
free (current);
list->count--;
status = 0;
break;
}
}
mu_monitor_unlock (list->monitor);
return status;
}
int
mu_list_remove_nth_nd (mu_list_t list, size_t n)
{
mu_list_destroy_item_t dptr = mu_list_set_destroy_item (list, NULL);
int rc = mu_list_remove_nth (list, n);
mu_list_set_destroy_item (list, dptr);
return rc;
}
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