161 lines
5.1 KiB
C++
161 lines
5.1 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 <QtGlobal>
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#include <QObject>
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#include <QIODevice>
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#include <QBuffer>
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#include <QDir>
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#include <QByteArray>
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#include <QString>
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#include <QRegularExpression>
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#include <QXmlStreamReader>
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#include <QXmlStreamWriter>
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#include "core/shared_ptr.h"
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#include "utilities/xmlutils.h"
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#include "settings/playlistsettingspage.h"
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#include "xmlparser.h"
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#include "asxparser.h"
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class CollectionBackendInterface;
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ASXParser::ASXParser(SharedPtr<CollectionBackendInterface> collection_backend, QObject *parent)
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: XMLParser(collection_backend, parent) {}
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SongList ASXParser::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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// We have to load everything first, so we can munge the "XML".
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QByteArray data = device->readAll();
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// Some playlists have unescaped & characters in URLs :(
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QRegularExpression ex(QStringLiteral("(href\\s*=\\s*\")([^\"]+)\""), QRegularExpression::CaseInsensitiveOption);
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qint64 index = 0;
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for (QRegularExpressionMatch re_match = ex.match(QString::fromUtf8(data), index); re_match.hasMatch(); re_match = ex.match(QString::fromUtf8(data), index)) {
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index = re_match.capturedStart();
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QString url = re_match.captured(2);
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url.replace(QRegularExpression(QStringLiteral("&(?!amp;|quot;|apos;|lt;|gt;)")), QStringLiteral("&"));
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QByteArray replacement = QStringLiteral("%1%2\"").arg(re_match.captured(1), url).toLocal8Bit();
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data.replace(re_match.captured(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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if (!buffer.open(QIODevice::ReadOnly)) return SongList();
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QXmlStreamReader reader(&buffer);
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if (!Utilities::ParseUntilElementCI(&reader, QStringLiteral("asx"))) {
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buffer.close();
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return SongList();
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}
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SongList ret;
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while (!reader.atEnd() && Utilities::ParseUntilElementCI(&reader, QStringLiteral("entry"))) {
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Song song = ParseTrack(&reader, dir, collection_search);
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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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buffer.close();
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return ret;
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}
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Song ASXParser::ParseTrack(QXmlStreamReader *reader, const QDir &dir, const bool collection_search) 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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const QString name = reader->name().toString().toLower();
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if (name == QStringLiteral("ref")) {
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ref = reader->attributes().value(QStringLiteral("href")).toString();
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}
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else if (name == QStringLiteral("title")) {
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title = reader->readElementText();
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}
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else if (name == QStringLiteral("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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const QString name = reader->name().toString().toLower();
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if (name == QStringLiteral("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, 0, dir, collection_search);
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// Override metadata with what was in the playlist
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if (song.source() != Song::Source::Collection) {
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if (!title.isEmpty()) song.set_title(title);
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if (!artist.isEmpty()) song.set_artist(artist);
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if (!album.isEmpty()) song.set_album(album);
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}
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return song;
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}
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void ASXParser::Save(const SongList &songs, QIODevice *device, const QDir&, const PlaylistSettingsPage::PathType) 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(QStringLiteral("asx"), &writer);
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writer.writeAttribute(QStringLiteral("version"), QStringLiteral("3.0"));
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for (const Song &song : songs) {
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StreamElement entry(QStringLiteral("entry"), &writer);
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writer.writeTextElement(QStringLiteral("title"), song.title());
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{
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StreamElement ref(QStringLiteral("ref"), &writer);
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writer.writeAttribute(QStringLiteral("href"), song.url().toString());
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}
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if (!song.artist().isEmpty()) {
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writer.writeTextElement(QStringLiteral("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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