Chris@180: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@180: 
Chris@180: /*
Chris@180:     Sonic Visualiser
Chris@180:     An audio file viewer and annotation editor.
Chris@180:     Centre for Digital Music, Queen Mary, University of London.
Chris@180:     
Chris@180:     This program is free software; you can redistribute it and/or
Chris@180:     modify it under the terms of the GNU General Public License as
Chris@180:     published by the Free Software Foundation; either version 2 of the
Chris@180:     License, or (at your option) any later version.  See the file
Chris@180:     COPYING included with this distribution for more information.
Chris@180: */
Chris@180: 
Chris@180: /*
Chris@180:    This is a modified version of a source file from the 
Chris@180:    Rosegarden MIDI and audio sequencer and notation editor.
Chris@180:    This file copyright 2000-2009 Chris Cannam.
Chris@180: */
Chris@180: 
Chris@180: #include "VersionTester.h"
Chris@229: #include "base/Debug.h"
Chris@180: 
Chris@180: #include <iostream>
Chris@180: 
Chris@263: #include <QNetworkAccessManager>
Chris@263: 
Chris@180: 
Chris@180: VersionTester::VersionTester(QString hostname, QString versionFilePath,
Chris@180: 			     QString myVersion) :
Chris@263:     m_myVersion(myVersion),
Chris@263:     m_reply(0),
Chris@287:     m_httpFailed(false),
Chris@287:     m_nm(new QNetworkAccessManager)
Chris@180: {
Chris@263:     QUrl url(QString("http://%1/%2").arg(hostname).arg(versionFilePath));
Chris@293:     cerr << "VersionTester: URL is " << url << endl;
Chris@287:     m_reply = m_nm->get(QNetworkRequest(url));
Chris@263:     connect(m_reply, SIGNAL(error(QNetworkReply::NetworkError)),
Chris@263:             this, SLOT(error(QNetworkReply::NetworkError)));
Chris@263:     connect(m_reply, SIGNAL(finished()), this, SLOT(finished()));
Chris@180: }
Chris@180: 
Chris@180: VersionTester::~VersionTester()
Chris@180: {
Chris@263:     if (m_reply) {
Chris@263:         m_reply->abort();
Chris@263:         m_reply->deleteLater();
Chris@263:     }
Chris@287:     delete m_nm;
Chris@180: }
Chris@180: 
Chris@180: bool
Chris@180: VersionTester::isVersionNewerThan(QString a, QString b)
Chris@180: {
Chris@180:     QRegExp re("[._-]");
Chris@180:     QStringList alist = a.split(re, QString::SkipEmptyParts);
Chris@180:     QStringList blist = b.split(re, QString::SkipEmptyParts);
Chris@180:     int ae = alist.size();
Chris@180:     int be = blist.size();
Chris@180:     int e = std::max(ae, be);
Chris@180:     for (int i = 0; i < e; ++i) {
Chris@336:         int an = 0, bn = 0;
Chris@336:         if (i < ae) {
Chris@336:             an = alist[i].toInt();
Chris@336:             if (an == 0 && alist[i] != "0") {
Chris@336:                 an = -1; // non-numeric field -> "-pre1" etc
Chris@336:             }
Chris@336:         }
Chris@336:         if (i < be) {
Chris@336:             bn = blist[i].toInt();
Chris@336:             if (bn == 0 && blist[i] != "0") {
Chris@336:                 bn = -1;
Chris@336:             }
Chris@336:         }
Chris@336:         if (an < bn) return false;
Chris@336:         if (an > bn) return true;
Chris@180:     }
Chris@180:     return false;
Chris@180: }
Chris@180: 
Chris@180: void
Chris@263: VersionTester::error(QNetworkReply::NetworkError)
Chris@180: {
Chris@293:     cerr << "VersionTester: error: " << m_reply->errorString() << endl;
Chris@263:     m_httpFailed = true;
Chris@180: }
Chris@180: 
Chris@180: void
Chris@263: VersionTester::finished()
Chris@180: {
Chris@287:     QNetworkReply *r = m_reply;
Chris@287:     m_reply = 0;
Chris@287: 
Chris@287:     r->deleteLater();
Chris@263:     if (m_httpFailed) return;
Chris@180: 
Chris@287:     int status = r->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
Chris@263:     if (status / 100 != 2) {
Chris@293:         cerr << "VersionTester: error: http status = " << status << endl;
Chris@263:         return;
Chris@263:     }
Chris@263: 
Chris@287:     QByteArray responseData = r->readAll();
Chris@180:     QString str = QString::fromUtf8(responseData.data());
Chris@180:     QStringList lines = str.split('\n', QString::SkipEmptyParts);
Chris@180:     if (lines.empty()) return;
Chris@180: 
Chris@180:     QString latestVersion = lines[0];
Chris@336:     cerr << "Comparing current version \"" << m_myVersion << "\" with latest version \"" << latestVersion << "\"" << endl;
Chris@180:     if (isVersionNewerThan(latestVersion, m_myVersion)) {
Chris@336:         cerr << "Latest version \"" << latestVersion << "\" is newer than current version \"" << m_myVersion << "\"" << endl;
Chris@180:         emit newerVersionAvailable(latestVersion);
Chris@180:     }
Chris@180: }
Chris@180: 
Chris@180: