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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkMeshFileReaderBase_hxx
#define itkMeshFileReaderBase_hxx
#include "itkMeshFileReaderBase.h"
#include <itksys/SystemTools.hxx>
#include <fstream>
namespace itk
{
/**
* ***************GenerateOutputInformation ***********
*/
template <class TOutputMesh>
void
MeshFileReaderBase<TOutputMesh>::GenerateOutputInformation()
{
OutputMeshPointer output = this->GetOutput();
itkDebugMacro("Reading file for GenerateOutputInformation(): " << m_FileName);
/** Check to see if we can read the file given the name or prefix */
if (m_FileName.empty())
{
throw MeshFileReaderException(__FILE__, __LINE__, "FileName must be specified", ITK_LOCATION);
}
/** Test if the file exist and if it can be open.
* and exception will be thrown otherwise. */
this->TestFileExistanceAndReadability();
// Copy MetaDataDictionary from instantiated reader to output mesh?
// output->SetMetaDataDictionary(m_ImageIO->GetMetaDataDictionary());
// this->SetMetaDataDictionary(m_ImageIO->GetMetaDataDictionary());
// This makes not really sense i think.
// MeshRegionType region;
// region = ?
// output->SetLargestPossibleRegion(region);
} // end GenerateOutputInformation()
/**
* *************TestFileExistanceAndReadability ***********
*/
template <class TOutputMesh>
void
MeshFileReaderBase<TOutputMesh>::TestFileExistanceAndReadability()
{
// Test if the file exists.
if (!itksys::SystemTools::FileExists(m_FileName))
{
std::ostringstream msg;
msg << "The file doesn't exists. \nFilename = " << m_FileName << '\n';
throw MeshFileReaderException(__FILE__, __LINE__, msg.str().c_str(), ITK_LOCATION);
}
// Test if the file can be open for reading access.
const std::ifstream readTester(m_FileName);
if (readTester.fail())
{
std::ostringstream msg;
msg << "The file couldn't be opened for reading. \nFilename: " << m_FileName << '\n';
throw MeshFileReaderException(__FILE__, __LINE__, msg.str().c_str(), ITK_LOCATION);
}
} // end TestFileExistanceAndReadability()
/**
* **************EnlargeOutputRequestedRegion***********
*/
template <class TOutputMesh>
void
MeshFileReaderBase<TOutputMesh>::EnlargeOutputRequestedRegion(DataObject * output)
{
OutputMeshPointer out = dynamic_cast<OutputMeshType *>(output);
if (out)
{
out->SetRequestedRegionToLargestPossibleRegion();
}
else
{
throw MeshFileReaderException(__FILE__, __LINE__, "Invalid output object type");
}
} // end EnlargeOutputRequestedRegion()
} // end namespace itk
#endif
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