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/*
* Copyright 2003-2020 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 "Walk.hxx"
#include "UpdateDomain.hxx"
#include "db/DatabaseLock.hxx"
#include "db/PlaylistVector.hxx"
#include "db/plugins/simple/Directory.hxx"
#include "song/DetachedSong.hxx"
#include "input/InputStream.hxx"
#include "playlist/PlaylistPlugin.hxx"
#include "playlist/PlaylistRegistry.hxx"
#include "playlist/PlaylistStream.hxx"
#include "playlist/SongEnumerator.hxx"
#include "storage/FileInfo.hxx"
#include "storage/StorageInterface.hxx"
#include "util/StringFormat.hxx"
#include "Log.hxx"
void
UpdateWalk::UpdatePlaylistFile(Directory &parent, std::string_view name,
const StorageFileInfo &info,
const PlaylistPlugin &plugin) noexcept
{
assert(plugin.open_stream);
Directory *directory =
LockMakeVirtualDirectoryIfModified(parent, name, info,
DEVICE_PLAYLIST);
if (directory == nullptr)
/* not modified */
return;
const auto uri_utf8 = storage.MapUTF8(directory->GetPath());
FormatDebug(update_domain, "scanning playlist '%s'", uri_utf8.c_str());
try {
Mutex mutex;
auto e = plugin.open_stream(InputStream::OpenReady(uri_utf8.c_str(),
mutex));
if (!e) {
/* unsupported URI? roll back.. */
editor.LockDeleteDirectory(directory);
return;
}
unsigned track = 0;
while (true) {
auto song = e->NextSong();
if (!song)
break;
auto db_song = std::make_unique<Song>(std::move(*song),
*directory);
db_song->target = "../" + db_song->filename;
db_song->filename = StringFormat<64>("track%04u",
++track);
{
const ScopeDatabaseLock protect;
directory->AddSong(std::move(db_song));
}
}
} catch (...) {
FormatError(std::current_exception(),
"Failed to scan playlist '%s'", uri_utf8.c_str());
editor.LockDeleteDirectory(directory);
}
}
bool
UpdateWalk::UpdatePlaylistFile(Directory &directory,
std::string_view name, std::string_view suffix,
const StorageFileInfo &info) noexcept
{
const auto *const plugin = FindPlaylistPluginBySuffix(suffix);
if (plugin == nullptr)
return false;
if (GetPlaylistPluginAsFolder(*plugin))
UpdatePlaylistFile(directory, name, info, *plugin);
PlaylistInfo pi(name, info.mtime);
const ScopeDatabaseLock protect;
if (directory.playlists.UpdateOrInsert(std::move(pi)))
modified = true;
return true;
}