A few final changes for the 3.0.6 release
[pacman.git] / lib / libalpm / cache.c
blobed893470cfe728b229298e3fded0765935c81cd4
1 /*
2 * cache.c
3 *
4 * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
19 * USA.
22 #include "config.h"
24 #include <unistd.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <string.h>
29 #include <sys/stat.h>
30 #include <libintl.h>
32 /* libalpm */
33 #include "cache.h"
34 #include "alpm_list.h"
35 #include "log.h"
36 #include "alpm.h"
37 #include "util.h"
38 #include "error.h"
39 #include "package.h"
40 #include "group.h"
41 #include "db.h"
43 /* Returns a new package cache from db.
44 * It frees the cache if it already exists.
46 int _alpm_db_load_pkgcache(pmdb_t *db)
48 pmpkg_t *info;
49 int count = 0;
51 ALPM_LOG_FUNC;
53 if(db == NULL) {
54 return(-1);
57 _alpm_db_free_pkgcache(db);
59 _alpm_log(PM_LOG_DEBUG, _("loading package cache for repository '%s'"),
60 db->treename);
62 _alpm_db_rewind(db);
63 while((info = _alpm_db_scan(db, NULL)) != NULL) {
64 _alpm_log(PM_LOG_FUNCTION, _("adding '%s' to package cache for db '%s'"),
65 alpm_pkg_get_name(info), db->treename);
66 info->origin = PKG_FROM_CACHE;
67 info->data = db;
68 /* add to the collection */
69 db->pkgcache = alpm_list_add(db->pkgcache, info);
70 count++;
73 db->pkgcache = alpm_list_msort(db->pkgcache, count, _alpm_pkg_cmp);
74 return(0);
77 void _alpm_db_free_pkgcache(pmdb_t *db)
79 ALPM_LOG_FUNC;
81 if(db == NULL || db->pkgcache == NULL) {
82 return;
85 _alpm_log(PM_LOG_DEBUG, _("freeing package cache for repository '%s'"),
86 db->treename);
88 FREELISTPKGS(db->pkgcache);
90 if(db->grpcache) {
91 _alpm_db_free_grpcache(db);
95 alpm_list_t *_alpm_db_get_pkgcache(pmdb_t *db)
97 ALPM_LOG_FUNC;
99 if(db == NULL) {
100 return(NULL);
103 if(!db->pkgcache) {
104 _alpm_db_load_pkgcache(db);
107 /* hmmm, still NULL ?*/
108 if(!db->pkgcache) {
109 _alpm_log(PM_LOG_DEBUG, _("error: pkgcache is NULL for db '%s'"), db->treename);
112 return(db->pkgcache);
115 int _alpm_db_add_pkgincache(pmdb_t *db, pmpkg_t *pkg)
117 pmpkg_t *newpkg;
119 ALPM_LOG_FUNC;
121 if(db == NULL || pkg == NULL) {
122 return(-1);
125 newpkg = _alpm_pkg_dup(pkg);
126 if(newpkg == NULL) {
127 return(-1);
129 _alpm_log(PM_LOG_DEBUG, _("adding entry '%s' in '%s' cache"),
130 alpm_pkg_get_name(newpkg), db->treename);
131 db->pkgcache = alpm_list_add_sorted(db->pkgcache, newpkg, _alpm_pkg_cmp);
133 _alpm_db_free_grpcache(db);
135 return(0);
138 int _alpm_db_remove_pkgfromcache(pmdb_t *db, pmpkg_t *pkg)
140 void *vdata;
141 pmpkg_t *data;
143 ALPM_LOG_FUNC;
145 if(db == NULL || pkg == NULL) {
146 return(-1);
149 _alpm_log(PM_LOG_DEBUG, _("removing entry '%s' from '%s' cache"),
150 alpm_pkg_get_name(pkg), db->treename);
152 db->pkgcache = alpm_list_remove(db->pkgcache, pkg, _alpm_pkg_cmp, &vdata);
153 data = vdata;
154 if(data == NULL) {
155 /* package not found */
156 _alpm_log(PM_LOG_DEBUG, _("cannot remove entry '%s' from '%s' cache: not found"),
157 alpm_pkg_get_name(pkg), db->treename);
158 return(-1);
161 FREEPKG(data);
163 _alpm_db_free_grpcache(db);
165 return(0);
168 pmpkg_t *_alpm_db_get_pkgfromcache(pmdb_t *db, const char *target)
170 ALPM_LOG_FUNC;
172 if(db == NULL) {
173 return(NULL);
176 alpm_list_t *pkgcache = _alpm_db_get_pkgcache(db);
177 if(!pkgcache) {
178 _alpm_log(PM_LOG_DEBUG, _("error: failed to get '%s' from NULL pkgcache"), target);
179 return(NULL);
182 return(_alpm_pkg_find(target, pkgcache));
185 /* Returns a new group cache from db.
187 int _alpm_db_load_grpcache(pmdb_t *db)
189 alpm_list_t *lp;
191 ALPM_LOG_FUNC;
193 if(db == NULL) {
194 return(-1);
197 if(db->pkgcache == NULL) {
198 _alpm_db_load_pkgcache(db);
201 _alpm_log(PM_LOG_DEBUG, _("loading group cache for repository '%s'"), db->treename);
203 for(lp = _alpm_db_get_pkgcache(db); lp; lp = lp->next) {
204 alpm_list_t *i;
205 pmpkg_t *pkg = lp->data;
207 for(i = alpm_pkg_get_groups(pkg); i; i = i->next) {
208 if(!alpm_list_find_str(db->grpcache, i->data)) {
209 pmgrp_t *grp = _alpm_grp_new();
211 strncpy(grp->name, i->data, GRP_NAME_LEN);
212 grp->name[GRP_NAME_LEN-1] = '\0';
213 grp->packages = alpm_list_add_sorted(grp->packages,
214 /* gross signature forces us to
215 * discard const */
216 (void*)alpm_pkg_get_name(pkg),
217 _alpm_str_cmp);
218 db->grpcache = alpm_list_add_sorted(db->grpcache, grp, _alpm_grp_cmp);
219 } else {
220 alpm_list_t *j;
222 for(j = db->grpcache; j; j = j->next) {
223 pmgrp_t *grp = j->data;
225 if(strcmp(grp->name, i->data) == 0) {
226 const char *pkgname = alpm_pkg_get_name(pkg);
227 if(!alpm_list_find_str(grp->packages, pkgname)) {
228 grp->packages = alpm_list_add_sorted(grp->packages,
229 (void*)pkgname,
230 _alpm_str_cmp);
238 return(0);
241 void _alpm_db_free_grpcache(pmdb_t *db)
243 alpm_list_t *lg;
245 ALPM_LOG_FUNC;
247 if(db == NULL || db->grpcache == NULL) {
248 return;
251 for(lg = db->grpcache; lg; lg = lg->next) {
252 pmgrp_t *grp = lg->data;
254 FREELISTPTR(grp->packages);
255 FREEGRP(lg->data);
257 FREELIST(db->grpcache);
260 alpm_list_t *_alpm_db_get_grpcache(pmdb_t *db)
262 ALPM_LOG_FUNC;
264 if(db == NULL) {
265 return(NULL);
268 if(db->grpcache == NULL) {
269 _alpm_db_load_grpcache(db);
272 return(db->grpcache);
275 pmgrp_t *_alpm_db_get_grpfromcache(pmdb_t *db, const char *target)
277 alpm_list_t *i;
279 ALPM_LOG_FUNC;
281 if(db == NULL || target == NULL || strlen(target) == 0) {
282 return(NULL);
285 for(i = _alpm_db_get_grpcache(db); i; i = i->next) {
286 pmgrp_t *info = i->data;
288 if(strcmp(info->name, target) == 0) {
289 return(info);
293 return(NULL);
296 /* vim: set ts=2 sw=2 noet: */