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authorDan McGee <dan@archlinux.org>2010-10-14 05:46:04 +0200
committerDan McGee <dan@archlinux.org>2010-10-14 05:46:04 +0200
commit68b50c81c79bcf01db0fd66ff523f32cc0dc67e9 (patch)
treee11e6be57e2ff49a67390e4659801190a0282375 /lib/libalpm/db.c
parent6eedf06fcc224648155bc5253d6fe1975be8da00 (diff)
parent24d77291da93fcd5d09df2b1d1d05474616f18a5 (diff)
downloadpacman-68b50c81c79bcf01db0fd66ff523f32cc0dc67e9.tar.gz
pacman-68b50c81c79bcf01db0fd66ff523f32cc0dc67e9.tar.xz
Merge remote branch 'allan/backend'
Diffstat (limited to 'lib/libalpm/db.c')
-rw-r--r--lib/libalpm/db.c271
1 files changed, 235 insertions, 36 deletions
diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c
index c8a91a2b..79d20d49 100644
--- a/lib/libalpm/db.c
+++ b/lib/libalpm/db.c
@@ -39,8 +39,9 @@
#include "log.h"
#include "util.h"
#include "handle.h"
-#include "cache.h"
#include "alpm.h"
+#include "package.h"
+#include "group.h"
/** \addtogroup alpm_databases Database Functions
* @brief Functions to query and manipulate the database of libalpm
@@ -80,7 +81,7 @@ pmdb_t SYMEXPORT *alpm_db_register_local(void)
}
/* Helper function for alpm_db_unregister{_all} */
-static void _alpm_db_unregister(pmdb_t *db)
+void _alpm_db_unregister(pmdb_t *db)
{
if(db == NULL) {
return;
@@ -96,6 +97,7 @@ static void _alpm_db_unregister(pmdb_t *db)
int SYMEXPORT alpm_db_unregister_all(void)
{
alpm_list_t *i;
+ pmdb_t *db;
ALPM_LOG_FUNC;
@@ -105,13 +107,16 @@ int SYMEXPORT alpm_db_unregister_all(void)
ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1));
/* close local database */
- _alpm_db_unregister(handle->db_local);
- handle->db_local = NULL;
+ db = handle->db_local;
+ if(db) {
+ db->ops->unregister(db);
+ handle->db_local = NULL;
+ }
/* and also sync ones */
for(i = handle->dbs_sync; i; i = i->next) {
- pmdb_t *db = i->data;
- _alpm_db_unregister(db);
+ db = i->data;
+ db->ops->unregister(db);
i->data = NULL;
}
FREELIST(handle->dbs_sync);
@@ -154,7 +159,7 @@ int SYMEXPORT alpm_db_unregister(pmdb_t *db)
RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
}
- _alpm_db_unregister(db);
+ db->ops->unregister(db);
return(0);
}
@@ -321,7 +326,7 @@ alpm_list_t SYMEXPORT *alpm_db_search(pmdb_t *db, const alpm_list_t* needles)
return(_alpm_db_search(db, needles));
}
-/* Set install reason for a package in db
+/** Set install reason for a package in db
* @param db pointer to the package database
* @param name the name of the package
* @param reason the new install reason
@@ -342,7 +347,7 @@ int SYMEXPORT alpm_db_set_pkgreason(pmdb_t *db, const char *name, pmpkgreason_t
_alpm_log(PM_LOG_DEBUG, "setting install reason %u for %s/%s\n", reason, db->treename, name);
/* read DESC */
- if(_alpm_db_read(db, pkg, INFRQ_DESC)) {
+ if(_alpm_local_db_read(db, pkg, INFRQ_DESC)) {
return(-1);
}
if(pkg->reason == reason) {
@@ -352,7 +357,7 @@ int SYMEXPORT alpm_db_set_pkgreason(pmdb_t *db, const char *name, pmpkgreason_t
/* set reason (in pkgcache) */
pkg->reason = reason;
/* write DESC */
- if(_alpm_db_write(db, pkg, INFRQ_DESC)) {
+ if(_alpm_local_db_write(db, pkg, INFRQ_DESC)) {
return(-1);
}
@@ -361,7 +366,7 @@ int SYMEXPORT alpm_db_set_pkgreason(pmdb_t *db, const char *name, pmpkgreason_t
/** @} */
-static pmdb_t *_alpm_db_new(const char *treename, int is_local)
+pmdb_t *_alpm_db_new(const char *treename, int is_local)
{
pmdb_t *db;
@@ -409,10 +414,10 @@ const char *_alpm_db_path(pmdb_t *db)
CALLOC(db->_path, 1, pathsize, RET_ERR(PM_ERR_MEMORY, NULL));
sprintf(db->_path, "%s%s/", dbpath, db->treename);
} else {
- pathsize = strlen(dbpath) + 5 + strlen(db->treename) + 2;
+ pathsize = strlen(dbpath) + 5 + strlen(db->treename) + 4;
CALLOC(db->_path, 1, pathsize, RET_ERR(PM_ERR_MEMORY, NULL));
/* all sync DBs now reside in the sync/ subdir of the dbpath */
- sprintf(db->_path, "%ssync/%s/", dbpath, db->treename);
+ sprintf(db->_path, "%ssync/%s.db", dbpath, db->treename);
}
_alpm_log(PM_LOG_DEBUG, "database path for tree %s set to %s\n",
db->treename, db->_path);
@@ -503,52 +508,246 @@ alpm_list_t *_alpm_db_search(pmdb_t *db, const alpm_list_t *needles)
return(ret);
}
-pmdb_t *_alpm_db_register_local(void)
+/* Returns a new package cache from db.
+ * It frees the cache if it already exists.
+ */
+int _alpm_db_load_pkgcache(pmdb_t *db)
{
- 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(db->ops->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(handle->db_local != NULL) {
- _alpm_log(PM_LOG_WARNING, _("attempt to re-register the 'local' DB\n"));
- RET_ERR(PM_ERR_DB_NOT_NULL, NULL);
+ if(db == NULL || !db->pkgcache_loaded) {
+ return;
}
- _alpm_log(PM_LOG_DEBUG, "registering local database\n");
+ _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_loaded = 0;
+
+ _alpm_db_free_grpcache(db);
+}
+
+alpm_list_t *_alpm_db_get_pkgcache(pmdb_t *db)
+{
+ ALPM_LOG_FUNC;
- db = _alpm_db_new("local", 1);
if(db == NULL) {
- RET_ERR(PM_ERR_DB_CREATE, NULL);
+ return(NULL);
}
- handle->db_local = db;
- return(db);
+ 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);
}
-pmdb_t *_alpm_db_register_sync(const char *treename)
+/* "duplicate" pkg then add it to pkgcache */
+int _alpm_db_add_pkgincache(pmdb_t *db, pmpkg_t *pkg)
{
- pmdb_t *db;
- alpm_list_t *i;
+ pmpkg_t *newpkg;
ALPM_LOG_FUNC;
- for(i = handle->dbs_sync; i; i = i->next) {
- pmdb_t *sdb = i->data;
- if(strcmp(treename, sdb->treename) == 0) {
- _alpm_log(PM_LOG_DEBUG, "attempt to re-register the '%s' database, using existing\n", sdb->treename);
- return sdb;
+ if(db == NULL || !db->pkgcache_loaded || pkg == NULL) {
+ return(-1);
+ }
+
+ newpkg = _alpm_pkg_dup(pkg);
+ if(newpkg == NULL) {
+ return(-1);
+ }
+
+ _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);
}
}
- _alpm_log(PM_LOG_DEBUG, "registering sync database '%s'\n", treename);
+ 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;
- db = _alpm_db_new(treename, 0);
if(db == NULL) {
- RET_ERR(PM_ERR_DB_CREATE, NULL);
+ return(NULL);
}
- handle->dbs_sync = alpm_list_add(handle->dbs_sync, db);
- return(db);
+ 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: */