141 lines
4.3 KiB
C++
141 lines
4.3 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 "xspfparser.h"
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#include <QDomDocument>
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#include <QFile>
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#include <QIODevice>
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#include <QRegExp>
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#include <QUrl>
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#include <QXmlStreamReader>
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XSPFParser::XSPFParser(LibraryBackendInterface* library, QObject* parent)
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: XMLParser(library, parent)
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{
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}
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SongList XSPFParser::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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QXmlStreamReader reader(device);
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if (!ParseUntilElement(&reader, "playlist") ||
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!ParseUntilElement(&reader, "trackList")) {
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return ret;
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}
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while (!reader.atEnd() && ParseUntilElement(&reader, "track")) {
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Song song = ParseTrack(&reader, dir);
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if (song.is_valid()) {
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ret << song;
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}
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}
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return ret;
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}
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Song XSPFParser::ParseTrack(QXmlStreamReader* reader, const QDir& dir) const {
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QString title, artist, album, location;
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qint64 nanosec = -1;
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while (!reader->atEnd()) {
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QXmlStreamReader::TokenType type = reader->readNext();
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switch (type) {
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case QXmlStreamReader::StartElement: {
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QStringRef name = reader->name();
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if (name == "location") {
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location = reader->readElementText();
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} else if (name == "title") {
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title = reader->readElementText();
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} else if (name == "creator") {
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artist = reader->readElementText();
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} else if (name == "album") {
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album = reader->readElementText();
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} else if (name == "duration") { // in milliseconds.
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const QString duration = reader->readElementText();
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bool ok = false;
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nanosec = duration.toInt(&ok) * kNsecPerMsec;
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if (!ok) {
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nanosec = -1;
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}
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} else if (name == "image") {
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// TODO: Fetch album covers.
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} else if (name == "info") {
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// TODO: Do something with extra info?
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}
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break;
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}
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case QXmlStreamReader::EndElement: {
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if (reader->name() == "track") {
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goto return_song;
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}
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}
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default:
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break;
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}
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}
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return_song:
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Song song = LoadSong(location, 0, dir);
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// Override metadata with what was in the playlist
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song.set_title(title);
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song.set_artist(artist);
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song.set_album(album);
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song.set_length_nanosec(nanosec);
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return song;
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}
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void XSPFParser::Save(const SongList& songs, QIODevice* device, const QDir&) const {
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QXmlStreamWriter writer(device);
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writer.writeStartDocument();
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StreamElement playlist("playlist", &writer);
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writer.writeAttribute("version", "1");
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writer.writeDefaultNamespace("http://xspf.org/ns/0/");
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StreamElement tracklist("trackList", &writer);
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foreach (const Song& song, songs) {
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StreamElement track("track", &writer);
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writer.writeTextElement("location", song.url().toString());
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writer.writeTextElement("title", song.title());
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if (!song.artist().isEmpty()) {
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writer.writeTextElement("creator", song.artist());
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}
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if (!song.album().isEmpty()) {
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writer.writeTextElement("album", song.album());
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}
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if (song.length_nanosec() != -1) {
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writer.writeTextElement("duration", QString::number(song.length_nanosec() / kNsecPerMsec));
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}
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QString art = song.art_manual().isEmpty() ? song.art_automatic() : song.art_manual();
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// Ignore images that are in our resource bundle.
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if (!art.startsWith(":") && !art.isEmpty()) {
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// Convert local files to URLs.
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if (!art.contains("://")) {
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art = QUrl::fromLocalFile(art).toString();
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}
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writer.writeTextElement("image", art);
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}
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}
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writer.writeEndDocument();
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}
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bool XSPFParser::TryMagic(const QByteArray &data) const {
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return data.contains("<playlist") && data.contains("<trackList");
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}
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