777e15bd78
Some database plugins don't use a Storage (e.g. UPnP), and with this plugin, DatabaseDetachSong() can crash.
104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
/*
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* Copyright 2003-2017 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 "SongLoader.hxx"
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#include "LocateUri.hxx"
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#include "client/Client.hxx"
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#include "db/DatabaseSong.hxx"
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#include "storage/StorageInterface.hxx"
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#include "DetachedSong.hxx"
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#include "PlaylistError.hxx"
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#include <assert.h>
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#ifdef ENABLE_DATABASE
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SongLoader::SongLoader(const Client &_client)
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:client(&_client), db(_client.GetDatabase()),
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storage(_client.GetStorage()) {}
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#endif
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DetachedSong
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SongLoader::LoadFromDatabase(const char *uri) const
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{
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#ifdef ENABLE_DATABASE
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if (db != nullptr)
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return DatabaseDetachSong(*db, storage, uri);
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#else
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(void)uri;
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#endif
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throw PlaylistError(PlaylistResult::NO_SUCH_SONG, "No database");
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}
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DetachedSong
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SongLoader::LoadFile(const char *path_utf8, Path path_fs) const
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{
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#ifdef ENABLE_DATABASE
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if (storage != nullptr) {
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const char *suffix = storage->MapToRelativeUTF8(path_utf8);
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if (suffix != nullptr)
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/* this path was relative to the music
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directory - obtain it from the database */
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return LoadFromDatabase(suffix);
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}
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#endif
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DetachedSong song(path_utf8);
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if (!song.LoadFile(path_fs))
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throw PlaylistError::NoSuchSong();
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return song;
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}
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DetachedSong
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SongLoader::LoadSong(const LocatedUri &located_uri) const
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{
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switch (located_uri.type) {
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case LocatedUri::Type::ABSOLUTE:
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return DetachedSong(located_uri.canonical_uri);
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case LocatedUri::Type::RELATIVE:
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return LoadFromDatabase(located_uri.canonical_uri);
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case LocatedUri::Type::PATH:
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return LoadFile(located_uri.canonical_uri, located_uri.path);
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}
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gcc_unreachable();
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}
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DetachedSong
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SongLoader::LoadSong(const char *uri_utf8) const
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{
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#if !CLANG_CHECK_VERSION(3,6)
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/* disabled on clang due to -Wtautological-pointer-compare */
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assert(uri_utf8 != nullptr);
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#endif
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const auto located_uri = LocateUri(uri_utf8, client
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#ifdef ENABLE_DATABASE
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, storage
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#endif
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);
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return LoadSong(located_uri);
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}
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