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/*
* Copyright (C) 2003-2015 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 "SongLoader.hxx"
#include "client/Client.hxx"
#include "db/DatabaseSong.hxx"
#include "storage/StorageInterface.hxx"
#include "ls.hxx"
#include "fs/AllocatedPath.hxx"
#include "fs/Traits.hxx"
#include "util/UriUtil.hxx"
#include "util/Error.hxx"
#include "DetachedSong.hxx"
#include "PlaylistError.hxx"
#include <assert.h>
#include <string.h>
#ifdef ENABLE_DATABASE
SongLoader::SongLoader(const Client &_client)
:client(&_client), db(_client.GetDatabase(IgnoreError())),
storage(_client.GetStorage()) {}
#endif
DetachedSong *
SongLoader::LoadFromDatabase(const char *uri, Error &error) const
{
#ifdef ENABLE_DATABASE
if (db != nullptr)
return DatabaseDetachSong(*db, *storage, uri, error);
#else
(void)uri;
#endif
error.Set(playlist_domain, int(PlaylistResult::NO_SUCH_SONG),
"No database");
return nullptr;
}
DetachedSong *
SongLoader::LoadFile(const char *path_utf8, Error &error) const
{
#ifdef ENABLE_DATABASE
if (storage != nullptr) {
const char *suffix = storage->MapToRelativeUTF8(path_utf8);
if (suffix != nullptr)
/* this path was relative to the music
directory - obtain it from the database */
return LoadFromDatabase(suffix, error);
}
#endif
const auto path_fs = AllocatedPath::FromUTF8(path_utf8, error);
if (path_fs.IsNull())
return nullptr;
if (client != nullptr && !client->AllowFile(path_fs, error))
return nullptr;
DetachedSong *song = new DetachedSong(path_utf8);
if (!song->LoadFile(path_fs)) {
error.Set(playlist_domain, int(PlaylistResult::NO_SUCH_SONG),
"No such file");
delete song;
return nullptr;
}
return song;
}
DetachedSong *
SongLoader::LoadSong(const char *uri_utf8, Error &error) const
{
#if !CLANG_CHECK_VERSION(3,6)
/* disabled on clang due to -Wtautological-pointer-compare */
assert(uri_utf8 != nullptr);
#endif
if (memcmp(uri_utf8, "file:///", 8) == 0)
/* absolute path */
return LoadFile(uri_utf8 + 7, error);
else if (PathTraitsUTF8::IsAbsolute(uri_utf8))
/* absolute path */
return LoadFile(uri_utf8, error);
else if (uri_has_scheme(uri_utf8)) {
/* remove URI */
if (!uri_supported_scheme(uri_utf8)) {
error.Set(playlist_domain,
int(PlaylistResult::NO_SUCH_SONG),
"Unsupported URI scheme");
return nullptr;
}
return new DetachedSong(uri_utf8);
} else {
/* URI relative to the music directory */
return LoadFromDatabase(uri_utf8, error);
}
}
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