diff options
Diffstat (limited to 'lib/libalpm/db.c')
| -rw-r--r-- | lib/libalpm/db.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c index d2844f8b..ac3b9ccb 100644 --- a/lib/libalpm/db.c +++ b/lib/libalpm/db.c @@ -41,6 +41,7 @@ #include "handle.h" #include "alpm.h" #include "package.h" +#include "group.h" struct db_operations default_db_ops = { .populate = _alpm_db_populate, @@ -562,6 +563,248 @@ pmdb_t *_alpm_db_register_sync(const char *treename) return(db); } +/* 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(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(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_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 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_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); + } + } + + 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); +} + int splitname(const char *target, pmpkg_t *pkg) { |