mirror of
https://github.com/moparisthebest/pacman
synced 2024-12-23 08:18:51 -05:00
4c872594da
Signed-off-by: Dan McGee <dan@archlinux.org>
284 lines
5.7 KiB
C
284 lines
5.7 KiB
C
/*
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* cache.c
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*
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* Copyright (c) 2002-2007 by Judd Vinet <jvinet@zeroflux.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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/* libalpm */
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#include "cache.h"
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#include "alpm_list.h"
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#include "log.h"
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#include "alpm.h"
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#include "util.h"
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#include "package.h"
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#include "group.h"
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#include "db.h"
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/* Returns a new package cache from db.
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* It frees the cache if it already exists.
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*/
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int _alpm_db_load_pkgcache(pmdb_t *db)
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{
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pmpkg_t *info;
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int count = 0;
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ALPM_LOG_FUNC;
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if(db == NULL) {
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return(-1);
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}
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_alpm_db_free_pkgcache(db);
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_alpm_log(PM_LOG_DEBUG, "loading package cache for repository '%s'\n",
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db->treename);
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_alpm_db_rewind(db);
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while((info = _alpm_db_scan(db, NULL)) != NULL) {
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_alpm_log(PM_LOG_FUNCTION, "adding '%s' to package cache for db '%s'\n",
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alpm_pkg_get_name(info), db->treename);
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info->origin = PKG_FROM_CACHE;
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info->origin_data.db = db;
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/* add to the collection */
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db->pkgcache = alpm_list_add(db->pkgcache, info);
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count++;
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}
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db->pkgcache = alpm_list_msort(db->pkgcache, count, _alpm_pkg_cmp);
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return(0);
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}
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void _alpm_db_free_pkgcache(pmdb_t *db)
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{
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ALPM_LOG_FUNC;
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if(db == NULL || db->pkgcache == NULL) {
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return;
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}
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_alpm_log(PM_LOG_DEBUG, "freeing package cache for repository '%s'\n",
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db->treename);
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alpm_list_free_inner(db->pkgcache, (alpm_list_fn_free)_alpm_pkg_free);
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alpm_list_free(db->pkgcache);
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db->pkgcache = NULL;
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if(db->grpcache) {
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_alpm_db_free_grpcache(db);
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}
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}
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alpm_list_t *_alpm_db_get_pkgcache(pmdb_t *db)
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{
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ALPM_LOG_FUNC;
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if(db == NULL) {
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return(NULL);
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}
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if(!db->pkgcache) {
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_alpm_db_load_pkgcache(db);
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}
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/* hmmm, still NULL ?*/
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if(!db->pkgcache) {
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_alpm_log(PM_LOG_DEBUG, "error: pkgcache is NULL for db '%s'\n", db->treename);
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}
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return(db->pkgcache);
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}
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int _alpm_db_add_pkgincache(pmdb_t *db, pmpkg_t *pkg)
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{
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ALPM_LOG_FUNC;
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if(db == NULL || pkg == NULL) {
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return(-1);
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}
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_alpm_log(PM_LOG_DEBUG, "adding entry '%s' in '%s' cache\n",
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alpm_pkg_get_name(pkg), db->treename);
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db->pkgcache = alpm_list_add_sorted(db->pkgcache, pkg, _alpm_pkg_cmp);
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_alpm_db_free_grpcache(db);
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return(0);
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}
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int _alpm_db_remove_pkgfromcache(pmdb_t *db, pmpkg_t *pkg)
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{
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void *vdata;
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pmpkg_t *data;
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ALPM_LOG_FUNC;
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if(db == NULL || pkg == NULL) {
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return(-1);
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}
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_alpm_log(PM_LOG_DEBUG, "removing entry '%s' from '%s' cache\n",
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alpm_pkg_get_name(pkg), db->treename);
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db->pkgcache = alpm_list_remove(db->pkgcache, pkg, _alpm_pkg_cmp, &vdata);
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data = vdata;
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if(data == NULL) {
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/* package not found */
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_alpm_log(PM_LOG_DEBUG, "cannot remove entry '%s' from '%s' cache: not found\n",
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alpm_pkg_get_name(pkg), db->treename);
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return(-1);
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}
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_alpm_pkg_free(data);
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_alpm_db_free_grpcache(db);
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return(0);
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}
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pmpkg_t *_alpm_db_get_pkgfromcache(pmdb_t *db, const char *target)
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{
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ALPM_LOG_FUNC;
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if(db == NULL) {
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return(NULL);
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}
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alpm_list_t *pkgcache = _alpm_db_get_pkgcache(db);
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if(!pkgcache) {
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_alpm_log(PM_LOG_DEBUG, "error: failed to get '%s' from NULL pkgcache\n",
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target);
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return(NULL);
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}
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return(_alpm_pkg_find(target, pkgcache));
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}
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/* Returns a new group cache from db.
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*/
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int _alpm_db_load_grpcache(pmdb_t *db)
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{
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alpm_list_t *lp;
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ALPM_LOG_FUNC;
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if(db == NULL) {
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return(-1);
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}
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if(db->pkgcache == NULL) {
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_alpm_db_load_pkgcache(db);
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}
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_alpm_log(PM_LOG_DEBUG, "loading group cache for repository '%s'\n",
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db->treename);
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for(lp = _alpm_db_get_pkgcache(db); lp; lp = lp->next) {
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const alpm_list_t *i;
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pmpkg_t *pkg = lp->data;
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for(i = alpm_pkg_get_groups(pkg); i; i = i->next) {
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const char *grpname = i->data;
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alpm_list_t *j;
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pmgrp_t *grp = NULL;
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int found = 0;
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/* first look through the group cache for a group with this name */
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for(j = db->grpcache; j; j = j->next) {
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grp = j->data;
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if(strcmp(grp->name, grpname) == 0
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&& !alpm_list_find_ptr(grp->packages, pkg)) {
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grp->packages = alpm_list_add(grp->packages, pkg);
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found = 1;
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break;
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}
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}
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if(found) {
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continue;
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}
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/* we didn't find the group, so create a new one with this name */
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grp = _alpm_grp_new(grpname);
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grp->packages = alpm_list_add(grp->packages, pkg);
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db->grpcache = alpm_list_add(db->grpcache, grp);
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}
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}
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return(0);
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}
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void _alpm_db_free_grpcache(pmdb_t *db)
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{
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alpm_list_t *lg;
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ALPM_LOG_FUNC;
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if(db == NULL || db->grpcache == NULL) {
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return;
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}
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for(lg = db->grpcache; lg; lg = lg->next) {
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_alpm_grp_free(lg->data);
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lg->data = NULL;
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}
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FREELIST(db->grpcache);
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}
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alpm_list_t *_alpm_db_get_grpcache(pmdb_t *db)
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{
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ALPM_LOG_FUNC;
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if(db == NULL) {
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return(NULL);
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}
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if(db->grpcache == NULL) {
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_alpm_db_load_grpcache(db);
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}
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return(db->grpcache);
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}
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pmgrp_t *_alpm_db_get_grpfromcache(pmdb_t *db, const char *target)
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{
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alpm_list_t *i;
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ALPM_LOG_FUNC;
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if(db == NULL || target == NULL || strlen(target) == 0) {
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return(NULL);
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}
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for(i = _alpm_db_get_grpcache(db); i; i = i->next) {
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pmgrp_t *info = i->data;
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if(strcmp(info->name, target) == 0) {
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return(info);
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}
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}
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return(NULL);
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}
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/* vim: set ts=2 sw=2 noet: */
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