cxTransformFile.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 "cxTransformFile.h"

#include <QFileInfo>
#include <QFile>

#include "cxTypeConversions.h"
#include "cxLogger.h"

namespace cx
{

TransformFile::TransformFile(QString fileName) :
        mFileName(fileName)
{
}

Transform3D TransformFile::read(bool* ok)
{
        if (ok)
                *ok = false;
        Transform3D retval = Transform3D::Identity();
        QFile file(mFileName);
        if (!QFileInfo(mFileName).exists() || !file.open(QIODevice::ReadOnly))
        {
                if (!ok)
                        reportWarning(QString("Failed to open file %1 for reading ").arg(file.fileName()));
                return retval;
        }
        bool localOk = true;
    if(!file.atEnd())
    {
        QString positionString = file.readLine();
        positionString += " " + file.readLine();
        positionString += " " + file.readLine();
        positionString += " " + file.readLine();
        retval = Transform3D::fromString(positionString, &localOk);
    }
        if (!localOk)
        {
                if (!ok)
                        reportWarning(QString("Invalid format in file %1. Values: [%2]").arg(mFileName).arg(qstring_cast(retval(0, 0))));
                return retval;
        }
        if (ok)
                *ok = true;
        return retval;
}

void TransformFile::write(const Transform3D& transform)
{
        QFile file(mFileName);
        if (!file.open(QIODevice::Truncate | QIODevice::WriteOnly | QIODevice::Text))
        {
                reportWarning(QString("Failed to open file %1 for writing.").arg(file.fileName()));
                return;
        }
        file.write(qstring_cast(transform).toLatin1());
}

}