132 lines
4.0 KiB
C++
132 lines
4.0 KiB
C++
/* This file is part of Clementine.
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Copyright 2010, David Sansome <me@davidsansome.com>
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Clementine 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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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "m3uparser.h"
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#include <QBuffer>
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#include <QRegExp>
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#include <QTextCodec>
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#include <QtDebug>
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#include "core/logging.h"
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#include "core/timeconstants.h"
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#include "playlist/playlist.h"
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M3UParser::M3UParser(LibraryBackendInterface* library, QObject* parent)
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: ParserBase(library, parent) {}
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SongList M3UParser::Load(QIODevice* device, const QString& playlist_path,
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const QDir& dir) const {
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SongList ret;
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M3UType type = STANDARD;
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Metadata current_metadata;
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// Unicode auto-detection is enabled in QTextStream by default.
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QTextStream playlist_stream(device);
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QString data = playlist_stream.readAll();
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qLog(Debug) << "Detected codec" << playlist_stream.codec()->name();
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// iTune playlists use \r newlines. These aren't handled by the Qt readLine
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// methods.
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QStringList lines = data.split(QRegExp("\n|\r|\r\n"));
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for (int i = 0; i < lines.count(); i++) {
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QString line = lines[i].trimmed();
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if (i == 0 && line.startsWith("#EXTM3U")) {
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// This is in extended M3U format.
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type = EXTENDED;
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} else if (line.startsWith('#')) {
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// Extended info or comment.
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if (type == 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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} else if (!line.isEmpty()) {
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Song song = LoadSong(line, 0, dir);
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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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}
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return ret;
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}
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bool M3UParser::ParseMetadata(const QString& line,
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M3UParser::Metadata* metadata) const {
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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,
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Playlist::Path path_type) const {
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device->write("#EXTM3U\n");
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QSettings s;
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s.beginGroup(Playlist::kSettingsGroup);
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bool writeMetadata = s.value(Playlist::kWriteMetadata, 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 (writeMetadata) {
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QString meta = QString("#EXTINF:%1,%2 - %3\n")
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.arg(song.length_nanosec() / kNsecPerSec)
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.arg(song.artist())
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.arg(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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