cxProcessWrapper.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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   this list of conditions and the following disclaimer.

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   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

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#include "cxProcessWrapper.h"
#include <QDir>
#include <QFileInfo>
#include "cxDataLocations.h"
#include "cxLogger.h"
#include "cxTypeConversions.h"
#include <iostream>

namespace cx
{

ProcessWrapper::ProcessWrapper(QString name, QObject* parent) :
                QObject(parent), mName(name), mLastExecutablePath("")
{
        mProcess = new QProcess(this);
        mReporter = ProcessReporterPtr(new ProcessReporter(mProcess, mName));

        mProcess->setProcessChannelMode(QProcess::MergedChannels);
        mProcess->setReadChannel(QProcess::StandardOutput);

        connect(mProcess.data(), &QProcess::stateChanged, this, &ProcessWrapper::stateChanged);
}

ProcessWrapper::~ProcessWrapper()
{
        mProcess->terminate();//terminate gives the process a chance to shutdown
        this->waitForFinished();
}

QProcess* ProcessWrapper::getProcess()
{
        return mProcess.data();
}

void ProcessWrapper::launchWithRelativePath(QString executable, QStringList arguments)
{
        QString absolutePathToExe = this->getExecutableInBundlesAbsolutePath(executable);

        this->launch(absolutePathToExe, arguments);
}

void ProcessWrapper::launch(QString executable, QStringList arguments)
{
        if (executable.isEmpty() || this->isRunning())
                return;

        this->internalLaunch(executable, arguments);
}

bool ProcessWrapper::isRunning()
{
        return mProcess->state() == QProcess::Running;
}

qint64 ProcessWrapper::write(const char * data)
{
        return mProcess->write(data);
}

bool ProcessWrapper::waitForStarted(int msecs)
{
        return mProcess->waitForStarted(msecs);
}

bool ProcessWrapper::waitForFinished(int msecs)
{
        return mProcess->waitForFinished(msecs);
}

QString ProcessWrapper::getExecutableInBundlesAbsolutePath(QString exeInBundle)
{
        QString absolutePathToExe = exeInBundle;

        if (!QFileInfo(absolutePathToExe).isAbsolute())
                absolutePathToExe = DataLocations::getBundlePath() + "/" + absolutePathToExe;

        absolutePathToExe = absolutePathToExe.trimmed();
        absolutePathToExe = QDir::cleanPath(absolutePathToExe);

        if (!QFileInfo(absolutePathToExe).exists())
                reportError(QString("Cannot find %1 [%2]").arg(mName).arg(absolutePathToExe));

        return absolutePathToExe;
}

void ProcessWrapper::internalLaunch(QString executable, QStringList arguments)
{
        if(this->isRunning())
                return;

        report(QString("Launching %1: [%2 %3]").arg(mName).arg(executable).arg(arguments.join(" ")));

        if(arguments.isEmpty())
                mProcess->start(executable);
        else
                mProcess->start(executable, arguments);

        mLastExecutablePath = executable;
}
}