/* $Id$ */
/* Copyright (c) 2006-2015 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libSystem */
/* This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, version 3 of the License.
 *
 * 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>. */



#ifndef LIBSYSTEM_SYSTEM_HASH_H
# define LIBSYSTEM_SYSTEM_HASH_H

# include <sys/types.h>


/* Hash */
/* types */
typedef struct _Hash Hash;

typedef unsigned int (*HashFunc)(void const * value);
typedef int (*HashCompare)(void const * value1, void const * value2);
typedef void (*HashForeach)(void const * key, void * value, void * data);


/* functions */
Hash * hash_new(HashFunc func, HashCompare compare);
void hash_delete(Hash * h);

/* helpers */
extern unsigned int hash_func_string(void const * value);
extern int hash_compare_string(void const * value1, void const * value2);

/* accessors */
void * hash_get(Hash * h, void const * key);
void * hash_get_key(Hash * h, void const * key);
int hash_set(Hash * h, void const * key, void * value);
size_t hash_count(Hash * hash);

/* useful */
void hash_foreach(Hash * hash, HashForeach func, void * data);
int hash_reset(Hash * hash);

#endif /* !LIBSYSTEM_SYSTEM_HASH_H */