Mercurial > hg > easyhg
view src/versiontester.cpp @ 720:adc3c445a07f
Add a note in the changelog about 1.4.0 (not a feature release, just bringing things up-to-date)
author | Chris Cannam |
---|---|
date | Thu, 13 Dec 2018 10:58:51 +0000 |
parents | f9b805d8cab4 |
children |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* EasyMercurial Based on hgExplorer by Jari Korhonen Copyright (c) 2010 Jari Korhonen Copyright (c) 2013 Chris Cannam Copyright (c) 2013 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. */ #include "versiontester.h" #include "debug.h" #include <iostream> #include <QNetworkAccessManager> static QNetworkAccessManager nm; VersionTester::VersionTester(QString hostname, QString versionFilePath, QString myVersion) : m_myVersion(myVersion), m_reply(0), m_httpFailed(false) { QUrl url(QString("http://%1/%2").arg(hostname).arg(versionFilePath)); std::cerr << "VersionTester: URL is " << url << std::endl; m_reply = nm.get(QNetworkRequest(url)); connect(m_reply, SIGNAL(error(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(); } } bool VersionTester::isVersionNewerThan(QString a, QString b) { QRegExp re("[._-]"); QStringList alist = a.split(re, QString::SkipEmptyParts); QStringList blist = b.split(re, QString::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) an = -1; // non-numeric field -> "-pre1" etc } if (i < be) { bn = blist[i].toInt(); if (bn == 0) bn = -1; } if (an < bn) return false; if (an > bn) return true; } return false; } void VersionTester::error(QNetworkReply::NetworkError) { std::cerr << "VersionTester: error: " << m_reply->errorString() << std::endl; m_httpFailed = true; } void VersionTester::finished() { m_reply->deleteLater(); if (m_httpFailed) return; int status = m_reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt(); if (status / 100 != 2) { std::cerr << "VersionTester: error: http status = " << status << std::endl; return; } QByteArray responseData = m_reply->readAll(); QString str = QString::fromUtf8(responseData.data()); QStringList lines = str.split('\n', QString::SkipEmptyParts); if (lines.empty()) return; QString latestVersion = lines[0]; DEBUG << "Comparing current version \"" << m_myVersion << "\" with latest version \"" << latestVersion << "\"" << endl; if (isVersionNewerThan(latestVersion, m_myVersion)) { emit newerVersionAvailable(latestVersion); } }