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Diffstat (limited to '')
-rw-r--r-- | src/db/DatabaseGlue.cxx | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/db/DatabaseGlue.cxx b/src/db/DatabaseGlue.cxx new file mode 100644 index 000000000..3734e156c --- /dev/null +++ b/src/db/DatabaseGlue.cxx @@ -0,0 +1,152 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "DatabaseGlue.hxx" +#include "DatabaseSimple.hxx" +#include "Registry.hxx" +#include "DatabaseError.hxx" +#include "Directory.hxx" +#include "util/Error.hxx" +#include "config/ConfigData.hxx" +#include "Stats.hxx" +#include "DatabasePlugin.hxx" +#include "plugins/SimpleDatabasePlugin.hxx" + +#include <assert.h> +#include <string.h> + +static Database *db; +static bool db_is_open; +static bool is_simple; + +bool +DatabaseGlobalInit(EventLoop &loop, DatabaseListener &listener, + const config_param ¶m, Error &error) +{ + assert(db == nullptr); + assert(!db_is_open); + + const char *plugin_name = + param.GetBlockValue("plugin", "simple"); + is_simple = strcmp(plugin_name, "simple") == 0; + + const DatabasePlugin *plugin = GetDatabasePluginByName(plugin_name); + if (plugin == nullptr) { + error.Format(db_domain, + "No such database plugin: %s", plugin_name); + return false; + } + + db = plugin->create(loop, listener, param, error); + return db != nullptr; +} + +void +DatabaseGlobalDeinit(void) +{ + if (db_is_open) + db->Close(); + + if (db != nullptr) + delete db; +} + +const Database * +GetDatabase() +{ + assert(db == nullptr || db_is_open); + + return db; +} + +const Database * +GetDatabase(Error &error) +{ + assert(db == nullptr || db_is_open); + + if (db == nullptr) + error.Set(db_domain, DB_DISABLED, "No database"); + + return db; +} + +bool +db_is_simple(void) +{ + assert(db == nullptr || db_is_open); + + return is_simple; +} + +Directory * +db_get_root(void) +{ + assert(db != nullptr); + assert(db_is_simple()); + + return ((SimpleDatabase *)db)->GetRoot(); +} + +Directory * +db_get_directory(const char *name) +{ + if (db == nullptr) + return nullptr; + + Directory *music_root = db_get_root(); + if (name == nullptr) + return music_root; + + return music_root->LookupDirectory(name); +} + +bool +db_save(Error &error) +{ + assert(db != nullptr); + assert(db_is_open); + assert(db_is_simple()); + + return ((SimpleDatabase *)db)->Save(error); +} + +bool +DatabaseGlobalOpen(Error &error) +{ + assert(db != nullptr); + assert(!db_is_open); + + if (!db->Open(error)) + return false; + + db_is_open = true; + + return true; +} + +bool +db_exists() +{ + assert(db != nullptr); + assert(db_is_open); + assert(db_is_simple()); + + return ((SimpleDatabase *)db)->GetUpdateStamp() > 0; +} |