/* * pkghash.h * * Copyright (c) 2011-2012 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 __alpm_pkghash_t { /** data held by the hash table */ alpm_list_t **hash_table; /** head node of the hash table data in normal list format */ alpm_list_t *list; /** number of buckets in hash table */ unsigned int buckets; /** number of entries in hash table */ unsigned int entries; /** max number of entries before a resize is needed */ unsigned int limit; }; typedef struct __alpm_pkghash_t alpm_pkghash_t; alpm_pkghash_t *_alpm_pkghash_create(unsigned int size); alpm_pkghash_t *_alpm_pkghash_add(alpm_pkghash_t *hash, alpm_pkg_t *pkg); alpm_pkghash_t *_alpm_pkghash_add_sorted(alpm_pkghash_t *hash, alpm_pkg_t *pkg); alpm_pkghash_t *_alpm_pkghash_remove(alpm_pkghash_t *hash, alpm_pkg_t *pkg, alpm_pkg_t **data); void _alpm_pkghash_free(alpm_pkghash_t *hash); alpm_pkg_t *_alpm_pkghash_find(alpm_pkghash_t *hash, const char *name); #endif /* _ALPM_PKGHASH_H */