mirror of
https://github.com/moparisthebest/pacman
synced 2024-12-23 16:28:50 -05:00
256 lines
5.3 KiB
C
256 lines
5.3 KiB
C
/*
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* cache.c
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*
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* Copyright (c) 2002-2006 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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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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#include <sys/stat.h>
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/* pacman */
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#include "log.h"
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#include "alpm.h"
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#include "list.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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#include "cache.h"
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/* Helper function for comparing packages
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*/
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static int pkg_cmp(const void *p1, const void *p2)
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{
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return(strcmp(((pmpkg_t *)p1)->name, ((pmpkg_t *)p2)->name));
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}
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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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/* The group cache needs INFRQ_DESC as well */
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unsigned char infolevel = INFRQ_DEPENDS | INFRQ_DESC;
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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 (infolevel=%#x) for repository '%s'",
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infolevel, db->treename);
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_alpm_db_rewind(db);
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while((info = _alpm_db_scan(db, NULL, infolevel)) != NULL) {
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info->origin = PKG_FROM_CACHE;
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info->data = db;
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/* add to the collective */
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db->pkgcache = _alpm_list_add_sorted(db->pkgcache, info, pkg_cmp);
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}
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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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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'",
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db->treename);
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FREELISTPKGS(db->pkgcache);
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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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PMList *_alpm_db_get_pkgcache(pmdb_t *db)
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{
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if(db == NULL) {
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return(NULL);
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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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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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pmpkg_t *newpkg;
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if(db == NULL || pkg == NULL) {
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return(-1);
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}
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newpkg = _alpm_pkg_dup(pkg);
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if(newpkg == 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", newpkg->name, db->treename);
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db->pkgcache = _alpm_list_add_sorted(db->pkgcache, newpkg, 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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pmpkg_t *data;
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if(db == NULL || pkg == NULL) {
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return(-1);
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}
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db->pkgcache = _alpm_list_remove(db->pkgcache, pkg, pkg_cmp, (void **)&data);
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if(data == NULL) {
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/* package not found */
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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", pkg->name, db->treename);
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FREEPKG(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, char *target)
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{
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if(db == NULL) {
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return(NULL);
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}
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return(_alpm_pkg_isin(target, _alpm_db_get_pkgcache(db)));
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}
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/* Returns a new group 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_grpcache(pmdb_t *db)
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{
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PMList *lp;
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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'", db->treename);
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for(lp = db->pkgcache; lp; lp = lp->next) {
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PMList *i;
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pmpkg_t *pkg = lp->data;
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if(!(pkg->infolevel & INFRQ_DESC)) {
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_alpm_db_read(pkg->data, INFRQ_DESC, pkg);
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}
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for(i = pkg->groups; i; i = i->next) {
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if(!_alpm_list_is_strin(i->data, db->grpcache)) {
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pmgrp_t *grp = _alpm_grp_new();
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STRNCPY(grp->name, (char *)i->data, GRP_NAME_LEN);
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grp->packages = _alpm_list_add_sorted(grp->packages, pkg->name, _alpm_grp_cmp);
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db->grpcache = _alpm_list_add_sorted(db->grpcache, grp, _alpm_grp_cmp);
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} else {
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PMList *j;
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for(j = db->grpcache; j; j = j->next) {
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pmgrp_t *grp = j->data;
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if(strcmp(grp->name, i->data) == 0) {
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if(!_alpm_list_is_strin(pkg->name, grp->packages)) {
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grp->packages = _alpm_list_add_sorted(grp->packages, (char *)pkg->name, _alpm_grp_cmp);
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}
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}
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}
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}
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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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PMList *lg;
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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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pmgrp_t *grp = lg->data;
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FREELISTPTR(grp->packages);
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FREEGRP(lg->data);
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}
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FREELIST(db->grpcache);
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}
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PMList *_alpm_db_get_grpcache(pmdb_t *db)
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{
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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, char *target)
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{
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PMList *i;
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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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