d63e2c2641
This commit adds a PlaylistPlugin attribute "as_folder" which for now is only enabled in the "CUE" playlist plugin (which handles separate "*.cue" files). If a playlist with this flag set is being scanned during database update, it will be parsed and its contents will be added to the database. This allows clients to inspect them like directories and its contents will be searchable. Closes https://github.com/MusicPlayerDaemon/MPD/issues/39
109 lines
3.0 KiB
C++
109 lines
3.0 KiB
C++
/*
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* Copyright 2003-2019 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 "Walk.hxx"
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#include "UpdateDomain.hxx"
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#include "db/DatabaseLock.hxx"
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#include "db/PlaylistVector.hxx"
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#include "db/plugins/simple/Directory.hxx"
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#include "song/DetachedSong.hxx"
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#include "input/InputStream.hxx"
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#include "playlist/PlaylistPlugin.hxx"
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#include "playlist/PlaylistRegistry.hxx"
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#include "playlist/PlaylistStream.hxx"
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#include "playlist/SongEnumerator.hxx"
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#include "storage/FileInfo.hxx"
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#include "storage/StorageInterface.hxx"
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#include "util/StringFormat.hxx"
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#include "Log.hxx"
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void
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UpdateWalk::UpdatePlaylistFile(Directory &parent, const char *name,
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const StorageFileInfo &info,
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const PlaylistPlugin &plugin) noexcept
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{
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assert(plugin.open_stream);
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Directory *directory =
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LockMakeVirtualDirectoryIfModified(parent, name, info,
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DEVICE_PLAYLIST);
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if (directory == nullptr)
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/* not modified */
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return;
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const auto uri_utf8 = storage.MapUTF8(directory->GetPath());
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FormatDebug(update_domain, "scanning playlist '%s'", uri_utf8.c_str());
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try {
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Mutex mutex;
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auto e = plugin.open_stream(InputStream::OpenReady(uri_utf8.c_str(),
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mutex));
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if (!e) {
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/* unsupported URI? roll back.. */
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editor.LockDeleteDirectory(directory);
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return;
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}
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unsigned track = 0;
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while (true) {
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auto song = e->NextSong();
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if (!song)
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break;
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auto db_song = std::make_unique<Song>(std::move(*song),
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*directory);
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db_song->target = "../" + db_song->filename;
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db_song->filename = StringFormat<64>("track%04u",
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++track);
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{
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const ScopeDatabaseLock protect;
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directory->AddSong(std::move(db_song));
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}
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}
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} catch (...) {
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FormatError(std::current_exception(),
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"Failed to scan playlist '%s'", uri_utf8.c_str());
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editor.LockDeleteDirectory(directory);
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}
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}
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bool
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UpdateWalk::UpdatePlaylistFile(Directory &directory,
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const char *name, const char *suffix,
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const StorageFileInfo &info) noexcept
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{
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const auto *const plugin = FindPlaylistPluginBySuffix(suffix);
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if (plugin == nullptr)
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return false;
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if (plugin->as_folder)
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UpdatePlaylistFile(directory, name, info, *plugin);
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PlaylistInfo pi(name, info.mtime);
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const ScopeDatabaseLock protect;
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if (directory.playlists.UpdateOrInsert(std::move(pi)))
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modified = true;
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return true;
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}
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