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/*
* Copyright 2003-2021 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.
*/
/*
* Maps directory and song objects to file system paths.
*/
#include "config.h"
#include "Mapper.hxx"
#include "fs/AllocatedPath.hxx"
#include "fs/CheckFile.hxx"
#include "util/StringCompare.hxx"
#ifdef ENABLE_DATABASE
#include "storage/StorageInterface.hxx"
#include "Instance.hxx"
#include "Main.hxx"
#endif
#include <cassert>
/**
* The absolute path of the playlist directory encoded in the
* filesystem character set.
*/
static AllocatedPath playlist_dir_fs = nullptr;
static void
mapper_set_playlist_dir(AllocatedPath &&path)
{
assert(!path.IsNull());
playlist_dir_fs = std::move(path);
CheckDirectoryReadable(playlist_dir_fs);
}
void
mapper_init(AllocatedPath &&_playlist_dir)
{
if (!_playlist_dir.IsNull())
mapper_set_playlist_dir(std::move(_playlist_dir));
}
#ifdef ENABLE_DATABASE
AllocatedPath
map_uri_fs(const char *uri) noexcept
{
assert(uri != nullptr);
assert(*uri != '/');
if (global_instance->storage == nullptr)
return nullptr;
const auto music_dir_fs = global_instance->storage->MapFS("");
if (music_dir_fs.IsNull())
return nullptr;
const auto uri_fs = AllocatedPath::FromUTF8(uri);
if (uri_fs.IsNull())
return nullptr;
return music_dir_fs / uri_fs;
}
std::string
map_fs_to_utf8(Path path_fs) noexcept
{
if (path_fs.IsAbsolute()) {
if (global_instance->storage == nullptr)
return std::string();
const auto music_dir_fs = global_instance->storage->MapFS("");
if (music_dir_fs.IsNull())
return std::string();
auto relative = music_dir_fs.Relative(path_fs);
if (relative == nullptr || StringIsEmpty(relative))
return std::string();
path_fs = Path::FromFS(relative);
}
return path_fs.ToUTF8();
}
#endif
const AllocatedPath &
map_spl_path() noexcept
{
return playlist_dir_fs;
}
AllocatedPath
map_spl_utf8_to_fs(const char *name) noexcept
{
if (playlist_dir_fs.IsNull())
return nullptr;
std::string filename_utf8 = name;
filename_utf8.append(PLAYLIST_FILE_SUFFIX);
const auto filename_fs =
AllocatedPath::FromUTF8(filename_utf8);
if (filename_fs.IsNull())
return nullptr;
return playlist_dir_fs / filename_fs;
}
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