summaryrefslogtreecommitdiff
path: root/libmailutils/list/remove.c
blob: ab5951da6de858926acecdabe14a2fbafdba36e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
/* GNU Mailutils -- a suite of utilities for electronic mail
   Copyright (C) 1999, 2000, 2001, 2004, 2005, 2007, 2008, 2010, 2011
   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 (mu_list_t list, void *item)
{
  struct list_data *current;
  mu_list_comparator_t comp;
  int status = MU_ERR_NOENT;

  if (list == NULL)
    return EINVAL;
  comp = list->comp ? list->comp : _mu_list_ptr_comparator;
  mu_monitor_wrlock (list->monitor);
  for (current = list->head.next;
       current != &list->head; current = current->next)
    {
      if (comp (current->item, item) == 0)
	{
	  struct list_data *previous = current->prev;
	  
	  mu_iterator_advance (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_nd (mu_list_t list, void *item)
{
  mu_list_destroy_item_t dptr = mu_list_set_destroy_item (list, NULL);
  int rc = mu_list_remove (list, item);
  mu_list_set_destroy_item (list, dptr);
  return rc;
}

Return to:

Send suggestions and report system problems to the System administrator.