139 lines
2.9 KiB
C
139 lines
2.9 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2006, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at http://curl.haxx.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* $Id$
|
|
***************************************************************************/
|
|
|
|
#include "setup.h"
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "llist.h"
|
|
#include "memory.h"
|
|
|
|
/* this must be the last include file */
|
|
#include "memdebug.h"
|
|
|
|
void
|
|
Curl_llist_init(struct curl_llist *l, curl_llist_dtor dtor)
|
|
{
|
|
l->size = 0;
|
|
l->dtor = dtor;
|
|
l->head = NULL;
|
|
l->tail = NULL;
|
|
}
|
|
|
|
struct curl_llist *
|
|
Curl_llist_alloc(curl_llist_dtor dtor)
|
|
{
|
|
struct curl_llist *list;
|
|
|
|
list = (struct curl_llist *)malloc(sizeof(struct curl_llist));
|
|
if(NULL == list)
|
|
return NULL;
|
|
|
|
Curl_llist_init(list, dtor);
|
|
|
|
return list;
|
|
}
|
|
|
|
/*
|
|
* Curl_llist_insert_next() returns 1 on success and 0 on failure.
|
|
*/
|
|
int
|
|
Curl_llist_insert_next(struct curl_llist *list, struct curl_llist_element *e,
|
|
const void *p)
|
|
{
|
|
struct curl_llist_element *ne =
|
|
(struct curl_llist_element *) malloc(sizeof(struct curl_llist_element));
|
|
if(!ne)
|
|
return 0;
|
|
|
|
ne->ptr = (void *) p;
|
|
if (list->size == 0) {
|
|
list->head = ne;
|
|
list->head->prev = NULL;
|
|
list->head->next = NULL;
|
|
list->tail = ne;
|
|
}
|
|
else {
|
|
ne->next = e->next;
|
|
ne->prev = e;
|
|
if (e->next) {
|
|
e->next->prev = ne;
|
|
}
|
|
else {
|
|
list->tail = ne;
|
|
}
|
|
e->next = ne;
|
|
}
|
|
|
|
++list->size;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
Curl_llist_remove(struct curl_llist *list, struct curl_llist_element *e,
|
|
void *user)
|
|
{
|
|
if (e == NULL || list->size == 0)
|
|
return 1;
|
|
|
|
if (e == list->head) {
|
|
list->head = e->next;
|
|
|
|
if (list->head == NULL)
|
|
list->tail = NULL;
|
|
else
|
|
e->next->prev = NULL;
|
|
} else {
|
|
e->prev->next = e->next;
|
|
if (!e->next)
|
|
list->tail = e->prev;
|
|
else
|
|
e->next->prev = e->prev;
|
|
}
|
|
|
|
list->dtor(user, e->ptr);
|
|
free(e);
|
|
--list->size;
|
|
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
Curl_llist_destroy(struct curl_llist *list, void *user)
|
|
{
|
|
if(list) {
|
|
while (list->size > 0)
|
|
Curl_llist_remove(list, list->tail, user);
|
|
|
|
free(list);
|
|
}
|
|
}
|
|
|
|
size_t
|
|
Curl_llist_count(struct curl_llist *list)
|
|
{
|
|
return list->size;
|
|
}
|