128 lines
3.1 KiB
C++
128 lines
3.1 KiB
C++
/*
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* Copyright (C) 2003-2015 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 "config.h"
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#include "QueueSave.hxx"
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#include "Queue.hxx"
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#include "PlaylistError.hxx"
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#include "DetachedSong.hxx"
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#include "SongSave.hxx"
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#include "SongLoader.hxx"
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#include "playlist/PlaylistSong.hxx"
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#include "fs/io/TextFile.hxx"
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#include "fs/io/BufferedOutputStream.hxx"
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#include "util/StringCompare.hxx"
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#include "util/Error.hxx"
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#include "fs/Traits.hxx"
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#include "Log.hxx"
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#include <stdlib.h>
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#define PRIO_LABEL "Prio: "
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static void
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queue_save_database_song(BufferedOutputStream &os,
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int idx, const DetachedSong &song)
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{
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os.Format("%i:%s\n", idx, song.GetURI());
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}
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static void
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queue_save_full_song(BufferedOutputStream &os, const DetachedSong &song)
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{
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song_save(os, song);
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}
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static void
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queue_save_song(BufferedOutputStream &os, int idx, const DetachedSong &song)
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{
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if (song.IsInDatabase() &&
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song.GetStartTime().IsZero() && song.GetEndTime().IsZero())
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/* use the brief format (just the URI) for "full"
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database songs */
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queue_save_database_song(os, idx, song);
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else
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/* use the long format (URI, range, tags) for the
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rest, so all metadata survives a MPD restart */
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queue_save_full_song(os, song);
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}
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void
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queue_save(BufferedOutputStream &os, const Queue &queue)
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{
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for (unsigned i = 0; i < queue.GetLength(); i++) {
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uint8_t prio = queue.GetPriorityAtPosition(i);
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if (prio != 0)
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os.Format(PRIO_LABEL "%u\n", prio);
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queue_save_song(os, i, queue.Get(i));
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}
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}
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void
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queue_load_song(TextFile &file, const SongLoader &loader,
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const char *line, Queue &queue)
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{
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if (queue.IsFull())
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return;
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uint8_t priority = 0;
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const char *p;
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if ((p = StringAfterPrefix(line, PRIO_LABEL))) {
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priority = strtoul(p, nullptr, 10);
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line = file.ReadLine();
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if (line == nullptr)
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return;
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}
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DetachedSong *song;
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if ((p = StringAfterPrefix(line, SONG_BEGIN))) {
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const char *uri = p;
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Error error;
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song = song_load(file, uri, error);
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if (song == nullptr) {
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LogError(error);
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return;
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}
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} else {
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char *endptr;
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long ret = strtol(line, &endptr, 10);
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if (ret < 0 || *endptr != ':' || endptr[1] == 0) {
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LogError(playlist_domain,
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"Malformed playlist line in state file");
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return;
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}
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const char *uri = endptr + 1;
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song = new DetachedSong(uri);
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}
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if (!playlist_check_translate_song(*song, nullptr, loader)) {
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delete song;
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return;
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}
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queue.Append(std::move(*song), priority);
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delete song;
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}
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