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/* This file is part of Clementine.
Copyright 2010, David Sansome <me@davidsansome.com>
Clementine is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Clementine is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QApplication>
#include <QFile>
#include <QWebFrame>
#include <QWebPage>
#include <QXmlStreamWriter>
#include <QtDebug>
int ShowUsage() {
qWarning() << "Usage:" << qApp->arguments()[0].toUtf8().constData() << "sites.js\n";
qWarning() << "This tool parses a sites.js file from the Ultimate Lyrics Amarok script";
qWarning() << "and outputs an XML file that can be used by Clementine.";
return 2;
}
void WriteRuleItem(QXmlStreamWriter& writer, const QVariant& value) {
if (value.type() == QVariant::String) {
writer.writeStartElement("item");
writer.writeAttribute("tag", value.toString());
writer.writeEndElement();
} else if (value.type() == QVariant::List) {
QVariantList list = value.toList();
writer.writeStartElement("item");
writer.writeAttribute("begin", list[0].toString());
writer.writeAttribute("end", list[1].toString());
writer.writeEndElement();
}
}
void WriteRules(QXmlStreamWriter& writer, const QString& name, const QVariantMap& map) {
for (int i=1 ; i<=4 ; ++i) {
const QString map_name = name + (i == 1 ? "" : QString::number(i));
if (!map.contains(map_name))
continue;
writer.writeStartElement(name);
QVariant value = map[map_name];
if (value.type() == QVariant::String) {
WriteRuleItem(writer, value);
} else if (value.type() == QVariant::List) {
foreach (const QVariant& child, value.toList()) {
WriteRuleItem(writer, child);
}
}
writer.writeEndElement();
}
}
void WriteList(QXmlStreamWriter& writer, const QString& name, const QVariantMap& map) {
if (!map.contains(name))
return;
QVariant value = map[name];
if (value.type() == QVariant::String) {
writer.writeStartElement(name);
writer.writeAttribute("value", value.toString());
writer.writeEndElement();
} else if (value.type() == QVariant::List) {
foreach (const QVariant& child, value.toList()) {
writer.writeStartElement(name);
writer.writeAttribute("value", child.toString());
writer.writeEndElement();
}
}
}
void WriteUrlFormat(QXmlStreamWriter& writer, const QVariantList& list) {
foreach (const QVariant& child, list) {
if (child.type() != QVariant::Map)
continue;
QVariantMap map = child.toMap();
if (!map.contains("rep") || !map.contains("punct"))
continue;
writer.writeStartElement("urlFormat");
writer.writeAttribute("replace", map["punct"].toString());
writer.writeAttribute("with", map["rep"].toString());
writer.writeEndElement();
}
}
void WriteProvider(QXmlStreamWriter& writer, const QString& name, const QVariant& data) {
QVariantMap map = data.toMap();
if (!map.contains("url") || map.contains("getReply"))
return;
writer.writeStartElement("provider");
writer.writeAttribute("name", name);
writer.writeAttribute("title", map["title"].toString());
writer.writeAttribute("charset", map["charset"].toString());
writer.writeAttribute("url", map["url"].toString());
WriteUrlFormat(writer, map["urlFormat"].toList());
WriteRules(writer, "extract", map);
WriteRules(writer, "exclude", map);
WriteList(writer, "invalidIndicator", map);
writer.writeEndElement();
}
int main(int argc, char** argv) {
QApplication a(argc, argv);
// Parse commandline arguments
if (a.arguments().count() != 2)
return ShowUsage();
QString sites_filename = a.arguments()[1];
if (!QFile::exists(sites_filename)) {
qWarning() << "Error:" << sites_filename << "does not exist";
return 1;
}
// Load the javascript file
QFile sites_file(sites_filename);
if (!sites_file.open(QIODevice::ReadOnly)) {
qWarning() << "Error: could not open" << sites_filename;
return 1;
}
QString javascript = QString::fromUtf8(sites_file.readAll());
javascript = javascript.section("\n}", 0, 0, QString::SectionIncludeTrailingSep);
javascript.append(";\n(siteDescriptors)");
// Parse the javascript
QWebPage page;
QVariant data = page.mainFrame()->evaluateJavaScript(javascript);
// Open the document
QFile stdout(NULL);
stdout.open(1, QIODevice::WriteOnly);
QXmlStreamWriter writer(&stdout);
writer.setAutoFormatting(true);
writer.setAutoFormattingIndent(2);
// Begin writing
writer.writeStartDocument();
writer.writeStartElement("lyricproviders");
foreach (const QString& provider_name, data.toMap().keys()) {
WriteProvider(writer, provider_name, data.toMap()[provider_name]);
}
writer.writeEndElement();
writer.writeEndDocument();
return 0;
}
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