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-rw-r--r--lib/libalpm/cache.c203
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: */