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mirror of https://github.com/moparisthebest/pacman synced 2024-12-23 08:18:51 -05:00
pacman/lib/libalpm/cache.c
Dan McGee a36ff9404b Bump copyright dates to 2010
Signed-off-by: Dan McGee <dan@archlinux.org>
2010-03-14 19:46:59 -05:00

292 lines
6.1 KiB
C

/*
* cache.c
*
* Copyright (c) 2006-2010 Pacman Development Team <pacman-dev@archlinux.org>
* Copyright (c) 2002-2006 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
/* libalpm */
#include "cache.h"
#include "alpm_list.h"
#include "log.h"
#include "alpm.h"
#include "util.h"
#include "package.h"
#include "group.h"
#include "db.h"
/* Returns a new package cache from db.
* It frees the cache if it already exists.
*/
int _alpm_db_load_pkgcache(pmdb_t *db)
{
ALPM_LOG_FUNC;
if(db == NULL) {
return(-1);
}
_alpm_db_free_pkgcache(db);
_alpm_log(PM_LOG_DEBUG, "loading package cache for repository '%s'\n",
db->treename);
if(_alpm_db_populate(db) == -1) {
_alpm_log(PM_LOG_DEBUG,
"failed to load package cache for repository '%s'\n", db->treename);
return(-1);
}
db->pkgcache_loaded = 1;
return(0);
}
void _alpm_db_free_pkgcache(pmdb_t *db)
{
ALPM_LOG_FUNC;
if(db == NULL || !db->pkgcache_loaded) {
return;
}
_alpm_log(PM_LOG_DEBUG, "freeing package cache for repository '%s'\n",
db->treename);
alpm_list_free_inner(db->pkgcache, (alpm_list_fn_free)_alpm_pkg_free);
alpm_list_free(db->pkgcache);
db->pkgcache = NULL;
db->pkgcache_loaded = 0;
_alpm_db_free_grpcache(db);
}
alpm_list_t *_alpm_db_get_pkgcache(pmdb_t *db)
{
ALPM_LOG_FUNC;
if(db == NULL) {
return(NULL);
}
if(!db->pkgcache_loaded) {
_alpm_db_load_pkgcache(db);
}
/* hmmm, still NULL ?*/
if(!db->pkgcache) {
_alpm_log(PM_LOG_DEBUG, "warning: pkgcache is NULL for db '%s'\n", db->treename);
}
return(db->pkgcache);
}
/* "duplicate" pkg with BASE info (to spare some memory) then add it to pkgcache */
int _alpm_db_add_pkgincache(pmdb_t *db, pmpkg_t *pkg)
{
pmpkg_t *newpkg;
ALPM_LOG_FUNC;
if(db == NULL || !db->pkgcache_loaded || pkg == NULL) {
return(-1);
}
newpkg = _alpm_pkg_new();
if(newpkg == NULL) {
return(-1);
}
newpkg->name = strdup(pkg->name);
newpkg->version = strdup(pkg->version);
if(newpkg->name == NULL || newpkg->version == NULL) {
pm_errno = PM_ERR_MEMORY;
_alpm_pkg_free(newpkg);
return(-1);
}
newpkg->origin = PKG_FROM_CACHE;
newpkg->origin_data.db = db;
newpkg->infolevel = INFRQ_BASE;
_alpm_log(PM_LOG_DEBUG, "adding entry '%s' in '%s' cache\n",
alpm_pkg_get_name(newpkg), db->treename);
db->pkgcache = alpm_list_add_sorted(db->pkgcache, newpkg, _alpm_pkg_cmp);
_alpm_db_free_grpcache(db);
return(0);
}
int _alpm_db_remove_pkgfromcache(pmdb_t *db, pmpkg_t *pkg)
{
void *vdata;
pmpkg_t *data;
ALPM_LOG_FUNC;
if(db == NULL || !db->pkgcache_loaded || pkg == NULL) {
return(-1);
}
_alpm_log(PM_LOG_DEBUG, "removing entry '%s' from '%s' cache\n",
alpm_pkg_get_name(pkg), db->treename);
db->pkgcache = alpm_list_remove(db->pkgcache, pkg, _alpm_pkg_cmp, &vdata);
data = vdata;
if(data == NULL) {
/* package not found */
_alpm_log(PM_LOG_DEBUG, "cannot remove entry '%s' from '%s' cache: not found\n",
alpm_pkg_get_name(pkg), db->treename);
return(-1);
}
_alpm_pkg_free(data);
_alpm_db_free_grpcache(db);
return(0);
}
pmpkg_t *_alpm_db_get_pkgfromcache(pmdb_t *db, const char *target)
{
ALPM_LOG_FUNC;
if(db == NULL) {
return(NULL);
}
alpm_list_t *pkgcache = _alpm_db_get_pkgcache(db);
if(!pkgcache) {
_alpm_log(PM_LOG_DEBUG, "warning: failed to get '%s' from NULL pkgcache\n",
target);
return(NULL);
}
return(_alpm_pkg_find(pkgcache, target));
}
/* Returns a new group cache from db.
*/
int _alpm_db_load_grpcache(pmdb_t *db)
{
alpm_list_t *lp;
ALPM_LOG_FUNC;
if(db == NULL) {
return(-1);
}
_alpm_log(PM_LOG_DEBUG, "loading group cache for repository '%s'\n",
db->treename);
for(lp = _alpm_db_get_pkgcache(db); lp; lp = lp->next) {
const alpm_list_t *i;
pmpkg_t *pkg = lp->data;
for(i = alpm_pkg_get_groups(pkg); i; i = i->next) {
const char *grpname = i->data;
alpm_list_t *j;
pmgrp_t *grp = NULL;
int found = 0;
/* first look through the group cache for a group with this name */
for(j = db->grpcache; j; j = j->next) {
grp = j->data;
if(strcmp(grp->name, grpname) == 0
&& !alpm_list_find_ptr(grp->packages, pkg)) {
grp->packages = alpm_list_add(grp->packages, pkg);
found = 1;
break;
}
}
if(found) {
continue;
}
/* we didn't find the group, so create a new one with this name */
grp = _alpm_grp_new(grpname);
grp->packages = alpm_list_add(grp->packages, pkg);
db->grpcache = alpm_list_add(db->grpcache, grp);
}
}
db->grpcache_loaded = 1;
return(0);
}
void _alpm_db_free_grpcache(pmdb_t *db)
{
alpm_list_t *lg;
ALPM_LOG_FUNC;
if(db == NULL || !db->grpcache_loaded) {
return;
}
_alpm_log(PM_LOG_DEBUG, "freeing group cache for repository '%s'\n",
db->treename);
for(lg = db->grpcache; lg; lg = lg->next) {
_alpm_grp_free(lg->data);
lg->data = NULL;
}
FREELIST(db->grpcache);
db->grpcache_loaded = 0;
}
alpm_list_t *_alpm_db_get_grpcache(pmdb_t *db)
{
ALPM_LOG_FUNC;
if(db == NULL) {
return(NULL);
}
if(!db->grpcache_loaded) {
_alpm_db_load_grpcache(db);
}
return(db->grpcache);
}
pmgrp_t *_alpm_db_get_grpfromcache(pmdb_t *db, const char *target)
{
alpm_list_t *i;
ALPM_LOG_FUNC;
if(db == NULL || target == NULL || strlen(target) == 0) {
return(NULL);
}
for(i = _alpm_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: */