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/*
* libEtPan! -- a mail stuff library
*
* clist - Implements simple generic double-linked pointer lists
*
* Copyright (c) 1999-2000, Gaël Roualland <gael.roualland@iname.com>
* interface changes - 2002 - DINH Viet Hoa
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the libEtPan! project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* $Id$
*/
#ifndef CLIST_H
#define CLIST_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct clistcell_s {
void * data;
struct clistcell_s * previous;
struct clistcell_s * next;
} clistcell;
struct clist_s {
clistcell * first;
clistcell * last;
int count;
};
typedef struct clist_s clist;
typedef clistcell clistiter;
/* Allocate a new pointer list */
clist * clist_new();
/* Destroys a list. Data pointed by data pointers is NOT freed. */
void clist_free(clist *);
/* Some of the following routines can be implemented as macros to
be faster. If you don't want it, define NO_MACROS */
#ifdef NO_MACROS
/* Returns TRUE if list is empty */
int clist_isempty(clist *);
/* Returns the number of elements in the list */
int clist_count(clist *);
/* Returns an iterator to the first element of the list */
clistiter * clist_begin(clist *);
/* Returns an iterator to the last element of the list */
clistiter * clist_end(clist *);
/* Returns an iterator to the next element of the list */
clistiter * clist_next(clistiter *);
/* Returns an iterator to the previous element of the list */
clistiter * clist_previous(clistiter *);
/* Returns the data pointer of this element of the list */
void* clist_content(clistiter *);
/* Inserts this data pointer at the beginning of the list */
int clist_prepend(clist *, void *);
/* Inserts this data pointer at the end of the list */
int clist_append(clist *, void *);
#else
#define clist_isempty(lst) ((lst->first==lst->last) && (lst->last==NULL))
#define clist_count(lst) (lst->count)
#define clist_begin(lst) (lst->first)
#define clist_end(lst) (lst->last)
#define clist_next(iter) (iter ? iter->next : NULL)
#define clist_previous(iter) (iter ? iter->previous : NULL)
#define clist_content(iter) (iter ? iter->data : NULL)
#define clist_prepend(lst, data) (clist_insert_before(lst, lst->first, data))
#define clist_append(lst, data) (clist_insert_after(lst, lst->last, data))
#endif
/* Inserts this data pointer before the element pointed by the iterator */
int clist_insert_before(clist *, clistiter *, void *);
/* Inserts this data pointer after the element pointed by the iterator */
int clist_insert_after(clist *, clistiter *, void *);
/* Deletes the element pointed by the iterator.
Returns an iterator to the next element. */
clistiter * clist_delete(clist *, clistiter *);
typedef void (* clist_func)(void *, void *);
void clist_foreach(clist * lst, clist_func func, void * data);
void clist_concat(clist * dest, clist * src);
void * clist_nth_data(clist * lst, int index);
clistiter * clist_nth(clist * lst, int index);
#ifdef __cplusplus
}
#endif
#endif
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