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Diffstat (limited to '')
-rw-r--r-- | src/db_plugin.h | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/src/db_plugin.h b/src/db_plugin.h deleted file mode 100644 index 1c7e14ede..000000000 --- a/src/db_plugin.h +++ /dev/null @@ -1,156 +0,0 @@ -/* - * 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. - */ - -/** \file - * - * This header declares the db_plugin class. It describes a - * plugin API for databases of song metadata. - */ - -#ifndef MPD_DB_PLUGIN_H -#define MPD_DB_PLUGIN_H - -#include <glib.h> -#include <assert.h> -#include <stdbool.h> - -struct config_param; -struct db_selection; -struct db_visitor; - -struct db { - const struct db_plugin *plugin; -}; - -struct db_plugin { - const char *name; - - /** - * Allocates and configures a database. - */ - struct db *(*init)(const struct config_param *param, GError **error_r); - - /** - * Free instance data. - */ - void (*finish)(struct db *db); - - /** - * Open the database. Read it into memory if applicable. - */ - bool (*open)(struct db *db, GError **error_r); - - /** - * Close the database, free allocated memory. - */ - void (*close)(struct db *db); - - /** - * Look up a song (including tag data) in the database. - * - * @param the URI of the song within the music directory - * (UTF-8) - */ - struct song *(*get_song)(struct db *db, const char *uri, - GError **error_r); - - /** - * Visit the selected entities. - */ - bool (*visit)(struct db *db, const struct db_selection *selection, - const struct db_visitor *visitor, void *ctx, - GError **error_r); -}; - -G_GNUC_MALLOC -static inline struct db * -db_plugin_new(const struct db_plugin *plugin, const struct config_param *param, - GError **error_r) -{ - assert(plugin != NULL); - assert(plugin->init != NULL); - assert(plugin->finish != NULL); - assert(plugin->get_song != NULL); - assert(plugin->visit != NULL); - assert(error_r == NULL || *error_r == NULL); - - struct db *db = plugin->init(param, error_r); - assert(db == NULL || db->plugin == plugin); - assert(db != NULL || error_r == NULL || *error_r != NULL); - - return db; -} - -static inline void -db_plugin_free(struct db *db) -{ - assert(db != NULL); - assert(db->plugin != NULL); - assert(db->plugin->finish != NULL); - - db->plugin->finish(db); -} - -static inline bool -db_plugin_open(struct db *db, GError **error_r) -{ - assert(db != NULL); - assert(db->plugin != NULL); - - return db->plugin->open != NULL - ? db->plugin->open(db, error_r) - : true; -} - -static inline void -db_plugin_close(struct db *db) -{ - assert(db != NULL); - assert(db->plugin != NULL); - - if (db->plugin->close != NULL) - db->plugin->close(db); -} - -static inline struct song * -db_plugin_get_song(struct db *db, const char *uri, GError **error_r) -{ - assert(db != NULL); - assert(db->plugin != NULL); - assert(db->plugin->get_song != NULL); - assert(uri != NULL); - - return db->plugin->get_song(db, uri, error_r); -} - -static inline bool -db_plugin_visit(struct db *db, const struct db_selection *selection, - const struct db_visitor *visitor, void *ctx, - GError **error_r) -{ - assert(db != NULL); - assert(db->plugin != NULL); - assert(selection != NULL); - assert(visitor != NULL); - assert(error_r == NULL || *error_r == NULL); - - return db->plugin->visit(db, selection, visitor, ctx, error_r); -} - -#endif |