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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This program 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 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
/*
This is a modified version of a source file from the
Rosegarden MIDI and audio sequencer and notation editor.
This file copyright 2000-2009 Chris Cannam.
*/
#include "VersionTester.h"
#include "base/Debug.h"
#include <iostream>
#include <QNetworkAccessManager>
#include <QRegularExpression>
namespace sv {
VersionTester::VersionTester(QString hostname, QString versionFilePath,
QString myVersion) :
m_myVersion(myVersion),
m_reply(nullptr),
m_httpFailed(false),
m_nm(new QNetworkAccessManager)
{
QUrl url(QString("http://%1/%2").arg(hostname).arg(versionFilePath));
SVDEBUG << "VersionTester: URL is " << url << endl;
m_reply = m_nm->get(QNetworkRequest(url));
connect(m_reply, SIGNAL(errorOccurred(QNetworkReply::NetworkError)),
this, SLOT(error(QNetworkReply::NetworkError)));
connect(m_reply, SIGNAL(finished()), this, SLOT(finished()));
}
VersionTester::~VersionTester()
{
if (m_reply) {
m_reply->abort();
m_reply->deleteLater();
}
delete m_nm;
}
bool
VersionTester::isVersionNewerThan(QString a, QString b)
{
QRegularExpression re("[._-]");
QStringList alist = a.split(re, Qt::SkipEmptyParts);
QStringList blist = b.split(re, Qt::SkipEmptyParts);
int ae = alist.size();
int be = blist.size();
int e = std::max(ae, be);
for (int i = 0; i < e; ++i) {
int an = 0, bn = 0;
if (i < ae) {
an = alist[i].toInt();
if (an == 0 && alist[i] != "0") {
an = -1; // non-numeric field -> "-pre1" etc
}
}
if (i < be) {
bn = blist[i].toInt();
if (bn == 0 && blist[i] != "0") {
bn = -1;
}
}
if (an < bn) return false;
if (an > bn) return true;
}
return false;
}
void
VersionTester::error(QNetworkReply::NetworkError)
{
SVDEBUG << "VersionTester: error: " << m_reply->errorString() << endl;
m_httpFailed = true;
}
void
VersionTester::finished()
{
QNetworkReply *r = m_reply;
m_reply = nullptr;
r->deleteLater();
if (m_httpFailed) return;
int status = r->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (status / 100 != 2) {
SVDEBUG << "VersionTester: error: http status = " << status << endl;
return;
}
QByteArray responseData = r->readAll();
QString str = QString::fromUtf8(responseData.data());
QStringList lines = str.split('\n', Qt::SkipEmptyParts);
if (lines.empty()) return;
QString latestVersion = lines[0];
SVDEBUG << "Comparing current version \"" << m_myVersion << "\" with latest version \"" << latestVersion << "\"" << endl;
if (isVersionNewerThan(latestVersion, m_myVersion)) {
SVDEBUG << "Latest version \"" << latestVersion << "\" is newer than current version \"" << m_myVersion << "\"" << endl;
emit newerVersionAvailable(latestVersion);
}
}
} // end namespace sv
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