diff options
Diffstat (limited to 'lib/libalpm/cache.c')
| -rw-r--r-- | lib/libalpm/cache.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/lib/libalpm/cache.c b/lib/libalpm/cache.c new file mode 100644 index 00000000..c6b298eb --- /dev/null +++ b/lib/libalpm/cache.c @@ -0,0 +1,203 @@ +/* + * cache.c + * + * Copyright (c) 2002-2005 by Judd Vinet <jvinet@zeroflux.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, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, + * USA. + */ + +#include "config.h" +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <string.h> +#include <sys/stat.h> +/* pacman */ +#include "list.h" +#include "package.h" +#include "group.h" +#include "db.h" +#include "cache.h" + +/* Returns a new package cache from db. + * It frees the cache if it already exists. + */ +int db_load_pkgcache(pmdb_t *db) +{ + pmpkg_t *info; + + if(db == NULL) { + return(-1); + } + + db_free_pkgcache(db); + + db_rewind(db); + while((info = db_scan(db, NULL, INFRQ_DESC|INFRQ_DEPENDS)) != NULL) { + info->origin = PKG_FROM_CACHE; + info->data = db; + /* add to the collective */ + db->pkgcache = pm_list_add_sorted(db->pkgcache, info, pkg_cmp); + } + + return(0); +} + +void db_free_pkgcache(pmdb_t *db) +{ + if(db == NULL || db->pkgcache == NULL) { + return; + } + + FREELISTPKGS(db->pkgcache); + + if(db->grpcache) { + db_free_grpcache(db); + } +} + +PMList *db_get_pkgcache(pmdb_t *db) +{ + if(db == NULL) { + return(NULL); + } + + if(db->pkgcache == NULL) { + db_load_pkgcache(db); + } + + return(db->pkgcache); +} + +pmpkg_t *db_get_pkgfromcache(pmdb_t *db, char *target) +{ + PMList *i; + + if(db == NULL || target == NULL || strlen(target) == 0) { + return(NULL); + } + + for(i = db_get_pkgcache(db); i; i = i->next) { + pmpkg_t *info = i->data; + + if(strcmp(info->name, target) == 0) { + return(info); + } + } + + return(NULL); +} + +/* Returns a new group cache from db. + * It frees the cache if it already exists. + */ +int db_load_grpcache(pmdb_t *db) +{ + PMList *lp; + + if(db == NULL) { + return(-1); + } + + if(db->pkgcache == NULL) { + db_load_pkgcache(db); + } + + for(lp = db->pkgcache; lp; lp = lp->next) { + PMList *i; + pmpkg_t *pkg = lp->data; + + for(i = pkg->groups; i; i = i->next) { + if(!pm_list_is_strin(i->data, db->grpcache)) { + pmgrp_t *grp = grp_new(); + + strncpy(grp->name, (char *)i->data, 256); + grp->packages = pm_list_add_sorted(grp->packages, pkg->name, grp_cmp); + db->grpcache = pm_list_add_sorted(db->grpcache, grp, grp_cmp); + } else { + PMList *j; + + for(j = db->grpcache; j; j = j->next) { + pmgrp_t *grp = j->data; + + if(strcmp(grp->name, i->data) == 0) { + if(!pm_list_is_strin(pkg->name, grp->packages)) { + grp->packages = pm_list_add_sorted(grp->packages, (char *)pkg->name, grp_cmp); + } + } + } + } + } + } + + return(0); +} + +void db_free_grpcache(pmdb_t *db) +{ + PMList *lg; + + if(db == NULL || db->grpcache == NULL) { + return; + } + + for(lg = db->grpcache; lg; lg = lg->next) { + PMList *lp; + pmgrp_t *grp = lg->data; + + for(lp = grp->packages; lp; lp = lp->next) { + lp->data = NULL; + } + FREELIST(grp->packages); + FREEGRP(lg->data); + } + FREELIST(db->grpcache); +} + +PMList *db_get_grpcache(pmdb_t *db) +{ + if(db == NULL) { + return(NULL); + } + + if(db->grpcache == NULL) { + db_load_grpcache(db); + } + + return(db->grpcache); +} + +pmgrp_t *db_get_grpfromcache(pmdb_t *db, char *target) +{ + PMList *i; + + if(db == NULL || target == NULL || strlen(target) == 0) { + return(NULL); + } + + for(i = db_get_grpcache(db); i; i = i->next) { + pmgrp_t *info = i->data; + + if(strcmp(info->name, target) == 0) { + return(info); + } + } + + return(NULL); +} + +/* vim: set ts=2 sw=2 noet: */ |