Initial revision

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: */