148 lines
4.4 KiB
C++
148 lines
4.4 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 "asxparser.h"
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#include <QBuffer>
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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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#include <QtDebug>
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#include "core/utilities.h"
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ASXParser::ASXParser(LibraryBackendInterface* library, QObject* parent)
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: XMLParser(library, parent) {}
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SongList ASXParser::Load(QIODevice* device, const QString& playlist_path,
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const QDir& dir) const {
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// We have to load everything first so we can munge the "XML".
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QByteArray data = device->readAll();
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// (thanks Amarok...)
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// ASX looks a lot like xml, but doesn't require tags to be case sensitive,
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// meaning we have to accept things like: <Abstract>...</abstract>
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// We use a dirty way to achieve this: we make all tags lower case
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QRegExp ex("(<[/]?[^>]*[A-Z]+[^>]*>)");
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ex.setCaseSensitivity(Qt::CaseInsensitive);
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int index = 0;
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while ((index = ex.indexIn(data, index)) != -1) {
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data.replace(ex.cap(1).toLocal8Bit(), ex.cap(1).toLower().toLocal8Bit());
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index += ex.matchedLength();
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}
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// Some playlists have unescaped & characters in URLs :(
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ex.setPattern("(href\\s*=\\s*\")([^\"]+)\"");
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index = 0;
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while ((index = ex.indexIn(data, index)) != -1) {
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QString url = ex.cap(2);
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url.replace(QRegExp("&(?!amp;|quot;|apos;|lt;|gt;)"), "&");
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QByteArray replacement = QString(ex.cap(1) + url + "\"").toLocal8Bit();
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data.replace(ex.cap(0).toLocal8Bit(), replacement);
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index += replacement.length();
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}
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QBuffer buffer(&data);
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buffer.open(QIODevice::ReadOnly);
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SongList ret;
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QXmlStreamReader reader(&buffer);
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if (!Utilities::ParseUntilElement(&reader, "asx")) {
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return ret;
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}
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while (!reader.atEnd() && Utilities::ParseUntilElement(&reader, "entry")) {
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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 ASXParser::ParseTrack(QXmlStreamReader* reader, const QDir& dir) const {
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QString title, artist, album, ref;
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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 == "ref") {
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ref = reader->attributes().value("href").toString();
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} else if (name == "title") {
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title = reader->readElementText();
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} else if (name == "author") {
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artist = reader->readElementText();
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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() == "entry") {
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goto return_song;
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}
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break;
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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(ref, 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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return song;
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}
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void ASXParser::Save(const SongList& songs, QIODevice* device, const QDir&,
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Playlist::Path path_type) const {
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QXmlStreamWriter writer(device);
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writer.setAutoFormatting(true);
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writer.setAutoFormattingIndent(2);
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writer.writeStartDocument();
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{
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StreamElement asx("asx", &writer);
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writer.writeAttribute("version", "3.0");
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for (const Song& song : songs) {
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StreamElement entry("entry", &writer);
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writer.writeTextElement("title", song.title());
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{
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StreamElement ref("ref", &writer);
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writer.writeAttribute("href", song.url().toString());
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}
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if (!song.artist().isEmpty()) {
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writer.writeTextElement("author", song.artist());
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}
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}
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}
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writer.writeEndDocument();
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}
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bool ASXParser::TryMagic(const QByteArray& data) const {
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return data.toLower().contains("<asx");
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}
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