/* 
**  Act - Abstract Container Type Library
**  Copyright (c) 1999-2002 Ralf S. Engelschall <rse@engelschall.com>
**
**  This file is part of Act, a library for dealing with Abstract 
**  Container Types which can be found at http://www.ossp.org/pkg/act/.
**
**  Permission to use, copy, modify, and distribute this software for
**  any purpose with or without fee is hereby granted, provided that
**  the above copyright notice and this permission notice appear in all
**  copies.
**
**  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 AUTHORS AND COPYRIGHT HOLDERS AND THEIR
**  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.
*/

#ifndef __LH_H__
#define __LH_H__

#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE !FALSE
#endif

struct lh_st;
typedef struct lh_st lh_t;

typedef int (*lh_cb_t)(void *ctx, const void *keyptr, int keylen, const void *datptr, int datlen);

lh_t *lh_create (void);
int   lh_insert (lh_t *h, const void *keyptr, int keylen, const void  *datptr, int  datlen, int override);
int   lh_lookup (lh_t *h, const void *keyptr, int keylen,       void **datptr, int *datlen);
int   lh_delete (lh_t *h, const void *keyptr, int keylen);
int   lh_apply  (lh_t *h, lh_cb_t cb, void *ctx);
int   lh_destroy(lh_t *h);

#endif /* __LH_H__ */