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/*
* Matchbox Keyboard - A lightweight software keyboard.
*
* Authored By Matthew Allum <mallum@o-hand.com>
*
* Copyright (c) 2005-2012 Intel Corp
*
* SPDX-License-Identifier: LGPL-2.1
*
*/
#include "matchbox-keyboard.h"
List *
util_list_alloc_item(void)
{
return util_malloc0(sizeof(List));
}
int
util_list_length(List *list)
{
int result = 1;
list = util_list_get_first(list);
while ((list = util_list_next(list)) != NULL)
result++;
return result;
}
List*
util_list_get_last(List *list)
{
if (list == NULL)
return NULL;
while (list->next)
list = util_list_next(list);
return list;
}
List*
util_list_get_first(List *list)
{
if (list == NULL)
return NULL;
while (list->prev)
list = util_list_previous(list);
return list;
}
void*
util_list_get_nth_data(List *list, int n)
{
if (list == NULL)
return NULL;
list = util_list_get_first(list);
while (list->next && n)
{
list = util_list_next(list);
n--;
}
if (n) return NULL;
return (void *)list->data;
}
List*
util_list_append(List *list, void *data)
{
if (list == NULL)
{
list = util_list_alloc_item();
list->data = data;
}
else
{
List *last = util_list_get_last(list);
last->next = util_list_alloc_item();
last->next->prev = list;
last->next->data = data;
}
return list;
}
void
util_list_foreach(List *list, ListForEachCB func, void *userdata)
{
while (list)
{
func(list->data, userdata);
list = util_list_next(list);
}
}
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