/***********************************************************************
	gutenfetch - query and fetch electronic texts from project gutenberg
    Copyright (C) 2001, 2002, 2003 Russell Francis 

    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

	Last updated on $Date: 2004/03/21 05:14:43 $ by $Author: johntabularasa $.
***********************************************************************/
#ifndef LIST_H
#define LIST_H
#include "stddefs.h"
typedef struct list_t* list_ptr_t;

typedef struct {
	void *data;
	list_ptr_t prev;
	list_ptr_t next;
} list_t;

typedef void (*list_data_destroy_func)(void*);

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

	list_t* 	list_prepend(list_t*, void*);
	list_t*		list_append(list_t*, void*);
	list_t*		list_previous(list_t*);
	list_t*		list_next(list_t*);
	list_t*		list_first(list_t*);
	list_t*		list_last(list_t*);
	list_t*		list_remove_node(list_t*, list_data_destroy_func);
	void  		list_remove_all(list_t*, list_data_destroy_func);

#ifdef __cplusplus
};
#endif /* __cplusplus */

#endif /* LIST_H */