151 lines
4.3 KiB
C++
151 lines
4.3 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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*
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* Strawberry 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 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry 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
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <QObject>
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#include <QIODevice>
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#include <QDir>
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#include <QBuffer>
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#include <QByteArray>
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#include <QString>
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#include <QStringList>
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#include <QSettings>
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#include "core/shared_ptr.h"
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#include "core/logging.h"
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#include "utilities/timeconstants.h"
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#include "settings/playlistsettingspage.h"
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#include "parserbase.h"
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#include "m3uparser.h"
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class CollectionBackendInterface;
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M3UParser::M3UParser(SharedPtr<CollectionBackendInterface> collection_backend, QObject *parent)
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: ParserBase(collection_backend, parent) {}
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SongList M3UParser::Load(QIODevice *device, const QString &playlist_path, const QDir &dir, const bool collection_search) const {
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Q_UNUSED(playlist_path);
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M3UType type = M3UType::STANDARD;
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Metadata current_metadata;
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QString data = QString::fromUtf8(device->readAll());
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data.replace('\r', '\n');
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data.replace("\n\n", "\n");
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QByteArray bytes = data.toUtf8();
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QBuffer buffer(&bytes);
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if (!buffer.open(QIODevice::ReadOnly)) return SongList();
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QString line = QString::fromUtf8(buffer.readLine()).trimmed();
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if (line.startsWith("#EXTM3U")) {
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// This is in extended M3U format.
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type = M3UType::EXTENDED;
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line = QString::fromUtf8(buffer.readLine()).trimmed();
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}
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SongList ret;
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forever {
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if (line.startsWith('#')) {
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// Extended info or comment.
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if (type == M3UType::EXTENDED && line.startsWith("#EXT")) {
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if (!ParseMetadata(line, ¤t_metadata)) {
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qLog(Warning) << "Failed to parse metadata: " << line;
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}
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}
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}
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else if (!line.isEmpty()) {
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Song song = LoadSong(line, 0, dir, collection_search);
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if (!current_metadata.title.isEmpty()) {
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song.set_title(current_metadata.title);
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}
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if (!current_metadata.artist.isEmpty()) {
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song.set_artist(current_metadata.artist);
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}
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if (current_metadata.length > 0) {
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song.set_length_nanosec(current_metadata.length);
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}
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ret << song;
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current_metadata = Metadata();
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}
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if (buffer.atEnd()) {
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break;
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}
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line = QString::fromUtf8(buffer.readLine()).trimmed();
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}
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buffer.close();
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return ret;
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}
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bool M3UParser::ParseMetadata(const QString &line, M3UParser::Metadata *metadata) {
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// Extended info, eg.
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// #EXTINF:123,Sample Artist - Sample title
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QString info = line.section(':', 1);
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QString l = info.section(',', 0, 0);
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bool ok = false;
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int length = l.toInt(&ok);
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if (!ok) {
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return false;
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}
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metadata->length = length * kNsecPerSec;
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QString track_info = info.section(',', 1);
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QStringList list = track_info.split(" - ");
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if (list.size() <= 1) {
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metadata->title = track_info;
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return true;
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}
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metadata->artist = list[0].trimmed();
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metadata->title = list[1].trimmed();
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return true;
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}
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void M3UParser::Save(const SongList &songs, QIODevice *device, const QDir &dir, const PlaylistSettingsPage::PathType path_type) const {
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device->write("#EXTM3U\n");
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QSettings s;
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s.beginGroup(PlaylistSettingsPage::kSettingsGroup);
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bool write_metadata = s.value("write_metadata", true).toBool();
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s.endGroup();
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for (const Song &song : songs) {
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if (song.url().isEmpty()) {
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continue;
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}
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if (write_metadata || (song.is_stream() && !song.is_radio())) {
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QString meta = QString("#EXTINF:%1,%2 - %3\n").arg(song.length_nanosec() / kNsecPerSec).arg(song.artist(), song.title());
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device->write(meta.toUtf8());
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}
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device->write(URLOrFilename(song.url(), dir, path_type).toUtf8());
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device->write("\n");
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}
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}
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bool M3UParser::TryMagic(const QByteArray &data) const {
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return data.contains("#EXTM3U") || data.contains("#EXTINF");
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}
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