130 lines
2.6 KiB
C++
130 lines
2.6 KiB
C++
/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "DatabaseGlue.hxx"
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#include "DatabaseSimple.hxx"
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#include "Registry.hxx"
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#include "DatabaseError.hxx"
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#include "Directory.hxx"
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#include "util/Error.hxx"
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#include "config/ConfigData.hxx"
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#include "Stats.hxx"
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#include "DatabasePlugin.hxx"
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#include "plugins/SimpleDatabasePlugin.hxx"
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#include <assert.h>
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#include <string.h>
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static Database *db;
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static bool db_is_open;
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static bool is_simple;
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bool
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DatabaseGlobalInit(EventLoop &loop, DatabaseListener &listener,
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const config_param ¶m, Error &error)
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{
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assert(db == nullptr);
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assert(!db_is_open);
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const char *plugin_name =
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param.GetBlockValue("plugin", "simple");
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is_simple = strcmp(plugin_name, "simple") == 0;
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const DatabasePlugin *plugin = GetDatabasePluginByName(plugin_name);
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if (plugin == nullptr) {
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error.Format(db_domain,
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"No such database plugin: %s", plugin_name);
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return false;
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}
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db = plugin->create(loop, listener, param, error);
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return db != nullptr;
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}
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void
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DatabaseGlobalDeinit(void)
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{
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if (db_is_open)
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db->Close();
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if (db != nullptr)
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delete db;
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}
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const Database *
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GetDatabase()
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{
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assert(db == nullptr || db_is_open);
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return db;
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}
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const Database *
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GetDatabase(Error &error)
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{
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assert(db == nullptr || db_is_open);
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if (db == nullptr)
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error.Set(db_domain, DB_DISABLED, "No database");
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return db;
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}
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bool
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db_is_simple(void)
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{
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assert(db == nullptr || db_is_open);
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return is_simple;
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}
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SimpleDatabase &
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db_get_simple()
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{
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assert(is_simple);
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assert(db != nullptr);
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return *(SimpleDatabase *)db;
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}
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bool
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DatabaseGlobalOpen(Error &error)
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{
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assert(db != nullptr);
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assert(!db_is_open);
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if (!db->Open(error))
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return false;
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db_is_open = true;
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return true;
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}
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bool
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db_exists()
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{
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assert(db != nullptr);
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assert(db_is_open);
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assert(db_is_simple());
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return ((SimpleDatabase *)db)->GetUpdateStamp() > 0;
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}
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