117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
/*
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* Copyright 2003-2021 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 "fs/Traits.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, std::string_view 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 =
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PathTraitsUTF8::IsAbsoluteOrHasScheme(db_song->filename.c_str())
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? db_song->filename
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/* prepend "../" to relative paths to
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go from the virtual directory
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(DEVICE_PLAYLIST) to the containing
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directory */
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: "../" + 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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std::string_view 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 (GetPlaylistPluginAsFolder(*plugin))
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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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