87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* Copyright 2003-2020 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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#ifndef MPD_SONG_LOADER_HXX
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#define MPD_SONG_LOADER_HXX
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#include "util/Compiler.h"
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#include "config.h"
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#include <cstddef>
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class Client;
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class Database;
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class Storage;
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class DetachedSong;
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class Path;
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struct LocatedUri;
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/**
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* A utility class that loads a #DetachedSong object by its URI. If
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* the URI is an absolute local file, it applies security checks via
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* Client::AllowFile(). If no #Client pointer was specified, then it
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* is assumed that all local files are allowed.
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*/
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class SongLoader {
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const Client *const client;
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#ifdef ENABLE_DATABASE
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const Database *const db;
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const Storage *const storage;
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#endif
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public:
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#ifdef ENABLE_DATABASE
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explicit SongLoader(const Client &_client);
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SongLoader(const Database *_db, const Storage *_storage)
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:client(nullptr), db(_db), storage(_storage) {}
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SongLoader(const Client &_client, const Database *_db,
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const Storage *_storage)
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:client(&_client), db(_db), storage(_storage) {}
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#else
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explicit SongLoader(const Client &_client)
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:client(&_client) {}
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explicit SongLoader(std::nullptr_t, std::nullptr_t)
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:client(nullptr) {}
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#endif
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#ifdef ENABLE_DATABASE
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const Storage *GetStorage() const {
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return storage;
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}
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#endif
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DetachedSong LoadSong(const LocatedUri &uri) const;
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/**
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* Throws #std::runtime_error on error.
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*/
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gcc_nonnull_all
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DetachedSong LoadSong(const char *uri_utf8) const;
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private:
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gcc_nonnull_all
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DetachedSong LoadFromDatabase(const char *uri) const;
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gcc_nonnull_all
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DetachedSong LoadFile(const char *path_utf8, Path path_fs) const;
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};
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#endif
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