#ifndef ZLIST_H
#define ZLIST_H

#include <stdlib.h>

#define ZLIST_FORWARD	1
#define ZLIST_BACKWARD	2

typedef struct zlist {
	int index;
	struct zlist *head;
	struct zlist *tail;
	struct zlist *prev;
	struct zlist *next;
	void *data;
} zlist;

zlist *new_zlist(void *data);
zlist *append_zlist_entry(zlist *node, void *data);
zlist *prepend_zlist_entry(zlist *node, void *data);
zlist *find_zlist_head(zlist *node);
zlist *find_zlist_tail(zlist *node);
void remove_zlist_entry(zlist *entry, int dofree, void (*free_func)(void *ptr));
zlist *insert_zlist_entry(zlist *before, zlist *after, void *data);
void free_zlist(zlist *node, int dofree,  void (*free_func)(void *ptr));
zlist *iterate_zlist(zlist *node, int mode);

#endif // ZLIST_H