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/* $Id$ */
/*
* Copyright (C)2003-2006 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Internal */
PJ_IDEF(void) pj_link_node(pj_list_type *prev, pj_list_type *next)
{
((pj_list*)prev)->next = next;
((pj_list*)next)->prev = prev;
}
/*
PJ_IDEF(void)
pj_list_init(pj_list_type * node)
{
((pj_list*)node)->next = ((pj_list*)node)->prev = node;
}
PJ_IDEF(int) pj_list_empty(const pj_list_type * node)
{
return ((pj_list*)node)->next == node;
}
*/
PJ_IDEF(void)
pj_list_insert_after(pj_list_type *pos, pj_list_type *node)
{
((pj_list*)node)->prev = pos;
((pj_list*)node)->next = ((pj_list*)pos)->next;
((pj_list*) ((pj_list*)pos)->next) ->prev = node;
((pj_list*)pos)->next = node;
}
PJ_IDEF(void)
pj_list_insert_before(pj_list_type *pos, pj_list_type *node)
{
pj_list_insert_after(((pj_list*)pos)->prev, node);
}
PJ_IDEF(void)
pj_list_insert_nodes_after(pj_list_type *pos, pj_list_type *lst)
{
pj_list *lst_last = (pj_list *) ((pj_list*)lst)->prev;
pj_list *pos_next = (pj_list *) ((pj_list*)pos)->next;
pj_link_node(pos, lst);
pj_link_node(lst_last, pos_next);
}
PJ_IDEF(void)
pj_list_insert_nodes_before(pj_list_type *pos, pj_list_type *lst)
{
pj_list_insert_nodes_after(((pj_list*)pos)->prev, lst);
}
PJ_IDEF(void)
pj_list_merge_last(pj_list_type *lst1, pj_list_type *lst2)
{
pj_link_node(((pj_list*)lst1)->prev, ((pj_list*)lst2)->next);
pj_link_node(((pj_list*)lst2)->prev, lst1);
pj_list_init(lst2);
}
PJ_IDEF(void)
pj_list_merge_first(pj_list_type *lst1, pj_list_type *lst2)
{
pj_link_node(((pj_list*)lst2)->prev, ((pj_list*)lst1)->next);
pj_link_node(((pj_list*)lst1), ((pj_list*)lst2)->next);
pj_list_init(lst2);
}
PJ_IDEF(void)
pj_list_erase(pj_list_type *node)
{
pj_link_node( ((pj_list*)node)->prev, ((pj_list*)node)->next);
}
PJ_IDEF(pj_list_type*)
pj_list_find_node(pj_list_type *list, pj_list_type *node)
{
pj_list *p = (pj_list *) ((pj_list*)list)->next;
while (p != list && p != node)
p = (pj_list *) p->next;
return p==node ? p : NULL;
}
PJ_IDEF(pj_list_type*)
pj_list_search(pj_list_type *list, void *value,
int (*comp)(void *value, const pj_list_type *node))
{
pj_list *p = (pj_list *) ((pj_list*)list)->next;
while (p != list && (*comp)(value, p) != 0)
p = (pj_list *) p->next;
return p==list ? NULL : p;
}
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