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/*
* pkghash.h
*
* Copyright (c) 2011 Pacman Development Team <pacman-dev@archlinux.org>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ALPM_PKGHASH_H
#define _ALPM_PKGHASH_H
#include <stdlib.h>
#include "alpm.h"
#include "alpm_list.h"
/**
* @brief A hash table for holding alpm_pkg_t objects.
*
* A combination of a hash table and a list, allowing for fast look-up
* by package name but also iteration over the packages.
*/
struct __pmpkghash_t {
/** data held by the hash table */
alpm_list_t **hash_table;
/** number of buckets in hash table */
size_t buckets;
/** number of entries in hash table */
size_t entries;
/** head node of the hash table data in normal list format */
alpm_list_t *list;
};
typedef struct __pmpkghash_t pmpkghash_t;
pmpkghash_t *_alpm_pkghash_create(size_t size);
pmpkghash_t *_alpm_pkghash_add(pmpkghash_t *hash, alpm_pkg_t *pkg);
pmpkghash_t *_alpm_pkghash_add_sorted(pmpkghash_t *hash, alpm_pkg_t *pkg);
pmpkghash_t *_alpm_pkghash_remove(pmpkghash_t *hash, alpm_pkg_t *pkg, alpm_pkg_t **data);
void _alpm_pkghash_free(pmpkghash_t *hash);
alpm_pkg_t *_alpm_pkghash_find(pmpkghash_t *hash, const char *name);
#define MAX_HASH_LOAD 0.7
#endif /* _ALPM_PKGHASH_H */
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