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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#include "definitiondownloader.h"
#include <QtCore/QLatin1Char>
#include <QtCore/QEventLoop>
#include <QtCore/QFile>
#include <QtNetwork/QNetworkAccessManager>
#include <QtNetwork/QNetworkRequest>
#include <QtNetwork/QNetworkReply>
using namespace TextEditor;
using namespace Internal;
DefinitionDownloader::DefinitionDownloader(const QUrl &url, const QString &localPath) :
m_url(url), m_localPath(localPath)
{}
void DefinitionDownloader::start()
{
QNetworkReply *reply;
QNetworkAccessManager manager;
int currentAttempt = 0;
const int maxAttempts = 5;
while (currentAttempt < maxAttempts) {
reply = getData(&manager);
if (reply->error() != QNetworkReply::NoError)
break;
++currentAttempt;
QVariant variant = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
if (variant.isValid() && currentAttempt < maxAttempts) {
m_url = variant.toUrl();
delete reply;
} else if (!variant.isValid()) {
saveData(reply);
break;
}
}
delete reply;
}
QNetworkReply *DefinitionDownloader::getData(QNetworkAccessManager *manager) const
{
QNetworkRequest request(m_url);
QNetworkReply *reply = manager->get(request);
QEventLoop eventLoop;
connect(reply, SIGNAL(finished()), &eventLoop, SLOT(quit()));
eventLoop.exec();
return reply;
}
void DefinitionDownloader::saveData(QNetworkReply *reply) const
{
const QString &urlPath = m_url.path();
const QString &fileName =
urlPath.right(urlPath.length() - urlPath.lastIndexOf(QLatin1Char('/')) - 1);
QFile file(m_localPath + fileName);
if (!file.open(QIODevice::Text | QIODevice::WriteOnly))
return;
file.write(reply->readAll());
file.close();
}
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