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/*
* Copyright 2003-2017 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.
*/
#ifndef MPD_SONG_LOADER_HXX
#define MPD_SONG_LOADER_HXX
#include "check.h"
#include "util/Compiler.h"
#include <cstddef>
class Client;
class Database;
class Storage;
class DetachedSong;
class Path;
struct LocatedUri;
/**
* A utility class that loads a #DetachedSong object by its URI. If
* the URI is an absolute local file, it applies security checks via
* Client::AllowFile(). If no #Client pointer was specified, then it
* is assumed that all local files are allowed.
*/
class SongLoader {
const Client *const client;
#ifdef ENABLE_DATABASE
const Database *const db;
const Storage *const storage;
#endif
public:
#ifdef ENABLE_DATABASE
explicit SongLoader(const Client &_client);
SongLoader(const Database *_db, const Storage *_storage)
:client(nullptr), db(_db), storage(_storage) {}
SongLoader(const Client &_client, const Database *_db,
const Storage *_storage)
:client(&_client), db(_db), storage(_storage) {}
#else
explicit SongLoader(const Client &_client)
:client(&_client) {}
explicit SongLoader(std::nullptr_t, std::nullptr_t)
:client(nullptr) {}
#endif
#ifdef ENABLE_DATABASE
const Storage *GetStorage() const {
return storage;
}
#endif
DetachedSong LoadSong(const LocatedUri &uri) const;
/**
* Throws #std::runtime_error on error.
*/
gcc_nonnull_all
DetachedSong LoadSong(const char *uri_utf8) const;
private:
gcc_nonnull_all
DetachedSong LoadFromDatabase(const char *uri) const;
gcc_nonnull_all
DetachedSong LoadFile(const char *path_utf8, Path path_fs) const;
};
#endif
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