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/*
* Copyright (C) 2003-2011 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 "database.h"
#include "db_error.h"
#include "db_save.h"
#include "db_visitor.h"
#include "db_plugin.h"
#include "db/simple_db_plugin.h"
#include "directory.h"
#include "stats.h"
#include "conf.h"
#include "glib_compat.h"
#include <glib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "database"
static struct db *db;
static bool db_is_open;
bool
db_init(const struct config_param *path, GError **error_r)
{
assert(db == NULL);
assert(!db_is_open);
if (path == NULL)
return true;
struct config_param *param = config_new_param("database", path->line);
config_add_block_param(param, "path", path->value, path->line);
db = db_plugin_new(&simple_db_plugin, param, error_r);
config_param_free(param);
return db != NULL;
}
void
db_finish(void)
{
if (db_is_open)
db_plugin_close(db);
if (db != NULL)
db_plugin_free(db);
}
struct directory *
db_get_root(void)
{
assert(db != NULL);
return simple_db_get_root(db);
}
struct directory *
db_get_directory(const char *name)
{
if (db == NULL)
return NULL;
struct directory *music_root = db_get_root();
if (name == NULL)
return music_root;
return directory_lookup_directory(music_root, name);
}
struct song *
db_get_song(const char *file)
{
assert(file != NULL);
g_debug("get song: %s", file);
if (db == NULL)
return NULL;
struct directory *music_root = db_get_root();
return directory_lookup_song(music_root, file);
}
bool
db_walk(const char *uri,
const struct db_visitor *visitor, void *ctx,
GError **error_r)
{
if (db == NULL) {
g_set_error_literal(error_r, db_quark(), DB_DISABLED,
"No database");
return false;
}
struct directory *directory = db_get_directory(uri);
if (directory == NULL) {
struct song *song;
if (visitor->song != NULL &&
(song = db_get_song(uri)) != NULL)
return visitor->song(song, ctx, error_r);
g_set_error(error_r, db_quark(), DB_NOT_FOUND,
"No such directory: %s", uri);
return false;
}
if (visitor->directory != NULL &&
!visitor->directory(directory, ctx, error_r))
return false;
return directory_walk(directory, visitor, ctx, error_r);
}
bool
db_save(GError **error_r)
{
assert(db != NULL);
assert(db_is_open);
return simple_db_save(db, error_r);
}
bool
db_load(GError **error)
{
assert(db != NULL);
assert(!db_is_open);
if (!db_plugin_open(db, error))
return false;
db_is_open = true;
stats_update();
return true;
}
time_t
db_get_mtime(void)
{
assert(db != NULL);
assert(db_is_open);
return simple_db_get_mtime(db);
}
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