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/**************************************************************************
**
** This file is part of Qt SDK**
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).*
**
** Contact: Nokia Corporation qt-info@nokia.com**
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
** 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.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception version
** 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you are unsure which license is appropriate for your use, please contact
** (qt-info@nokia.com).
**
**************************************************************************/
#include "qtpatch.h"
#include <QString>
#include <QStringList>
#include <QFileInfo>
#include <QProcess>
#include <QTextStream>
#include <QVector>
#include <QTime>
#include <QtCore/QDebug>
#include <QCoreApplication>
#include <QByteArrayMatcher>
#ifdef Q_OS_WIN
#include <windows.h> // for Sleep
#endif
#ifdef Q_OS_UNIX
#include <errno.h>
#include <signal.h>
#include <time.h>
#endif
static void sleepCopiedFromQTest(int ms)
{
if (ms < 0)
return;
#ifdef Q_OS_WIN
Sleep(uint(ms));
#else
struct timespec ts = { ms / 1000, (ms % 1000) * 1000 * 1000 };
nanosleep(&ts, NULL);
#endif
}
static void uiDetachedWait(int ms)
{
QTime timer;
timer.start();
do {
QCoreApplication::processEvents(QEventLoop::AllEvents, ms);
sleepCopiedFromQTest(10);
} while (timer.elapsed() < ms);
}
QHash<QString, QByteArray> QtPatch::qmakeValues(const QString &qmakePath, QByteArray *qmakeOutput)
{
QHash<QString, QByteArray> qmakeValueHash;
// in some cases qmake is not runable, because another process is blocking it(filewatcher ...)
int waitCount = 0;
while (qmakeValueHash.isEmpty() && waitCount < 60) {
QFileInfo qmake(qmakePath);
if (!qmake.exists()) {
qmakeOutput->append(QString::fromLatin1("%1 is not existing").arg(qmakePath));
return qmakeValueHash;
}
if (!qmake.isExecutable()) {
qmakeOutput->append(QString::fromLatin1("%1 is not executable").arg(qmakePath));
return qmakeValueHash;
}
QStringList args;
args << QLatin1String("-query");
QProcess process;
process.start(qmake.absoluteFilePath(), args, QIODevice::ReadOnly);
if (process.waitForFinished(2000)) {
if (process.exitStatus() == QProcess::CrashExit) {
qDebug() << qmakePath << "was crashed";
return qmakeValueHash;
}
QByteArray output = process.readAllStandardOutput();
qmakeOutput->append(output);
QTextStream stream(&output);
while (!stream.atEnd()) {
const QString line = stream.readLine();
const int index = line.indexOf(QLatin1Char(':'));
if (index != -1) {
QString value = line.mid(index+1);
if (value != QLatin1String("**Unknown**") )
qmakeValueHash.insert(line.left(index), value.toUtf8());
}
}
}
if (qmakeValueHash.isEmpty()) {
++waitCount;
static const int waitTimeInMilliSeconds = 500;
uiDetachedWait(waitTimeInMilliSeconds);
}
if (process.state() > QProcess::NotRunning ) {
qDebug() << "qmake process is still running, need to kill it.";
process.kill();
}
}
if (qmakeValueHash.isEmpty())
qDebug() << "Can't get any query output from qmake.";
return qmakeValueHash;
}
bool QtPatch::patchBinaryFile(const QString &fileName,
const QByteArray &oldQtPath,
const QByteArray &newQtPath)
{
QFile file(fileName);
if (!file.exists()) {
qDebug() << "qpatch: warning: file" << fileName << "not found";
return false;
}
openFileForPatching(&file);
if (!file.isOpen()) {
qDebug() << "qpatch: warning: file" << qPrintable(fileName) << "can not open.";
qDebug() << qPrintable(file.errorString());
return false;
}
bool isPatched = patchBinaryFile(&file, oldQtPath, newQtPath);
file.close();
return isPatched;
}
// device must be open
bool QtPatch::patchBinaryFile(QIODevice *device,
const QByteArray &oldQtPath,
const QByteArray &newQtPath)
{
if (!(device->openMode() == QIODevice::ReadWrite)) {
qDebug() << "qpatch: warning: This function needs an open device for writing.";
return false;
}
const QByteArray source = device->readAll();
device->seek(0);
int offset = 0;
QByteArray overwritePath(newQtPath);
if (overwritePath.size() < oldQtPath.size()) {
QByteArray fillByteArray(oldQtPath.size() - overwritePath.size(), '\0');
overwritePath.append(fillByteArray);
}
QByteArrayMatcher byteArrayMatcher(oldQtPath);
forever {
offset = byteArrayMatcher.indexIn(source, offset);
if (offset == -1)
break;
device->seek(offset);
device->write(overwritePath);
offset += overwritePath.size();
}
device->seek(0); //for next reading we should be at the beginning
return true;
}
bool QtPatch::patchTextFile(const QString &fileName,
const QHash<QByteArray, QByteArray> &searchReplacePairs)
{
QFile file(fileName);
if (!file.open(QFile::ReadOnly)) {
qDebug() << QString::fromLatin1("qpatch: warning: Open the file '%1' stopped: %2").arg(
fileName, file.errorString());
return false;
}
QByteArray source = file.readAll();
file.close();
QHashIterator<QByteArray, QByteArray> it(searchReplacePairs);
while (it.hasNext()) {
it.next();
source.replace(it.key(), it.value());
}
if (!file.open(QFile::WriteOnly | QFile::Truncate)) {
qDebug() << QString::fromLatin1("qpatch: error: file '%1' not writable").arg(fileName);
return false;
}
file.write(source);
return true;
}
bool QtPatch::openFileForPatching(QFile *file)
{
if (file->openMode() == QIODevice::NotOpen) {
// in some cases the file can not open, because another process is blocking it(filewatcher ...)
int waitCount = 0;
while (!file->open(QFile::ReadWrite) && waitCount < 60) {
++waitCount;
static const int waitTimeInMilliSeconds = 500;
uiDetachedWait(waitTimeInMilliSeconds);
}
return file->openMode() == QFile::ReadWrite;
}
qDebug() << QString::fromLatin1("qpatch: error: File '%1 is open, so it can not open it again.").arg(
file->fileName());
return false;
}
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