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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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.
*
*=========================================================================*/
#include <fstream>
#include "itkImageFileReader.h"
#include "itkMetaImageIO.h"
#include "itkTestingMacros.h"
// Specific ImageIO test
int
itkMetaImageIOGzTest(int argc, char * argv[])
{
if (argc < 2)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << "testDataDirectory" << std::endl;
}
int result(0);
std::cout << "Test whether MetaIO will search for a compressed data file" << std::endl
<< "if it can't find the uncompressed data file" << std::endl;
std::string headerName(argv[1]);
headerName += "/GzTest.mhd";
std::ofstream hdr(headerName.c_str());
hdr << "ObjectType = Image" << std::endl
<< "NDims = 2" << std::endl
<< "DimSize = 32 32" << std::endl
<< "ElementType = MET_USHORT" << std::endl
<< "ElementDataFile = GzTest.raw" << std::endl;
hdr.close();
std::string dataName(argv[1]);
dataName += "/GzTest.raw.gz";
gzFile compressed = gzopen(dataName.c_str(), "wb");
for (unsigned short i = 0; i < (32 * 32); ++i)
{
unsigned short pixel = i & 0xff;
if (gzwrite(compressed, &pixel, sizeof(pixel)) != sizeof(pixel))
{
std::cerr << "Write error for " << dataName << std::endl;
break;
}
}
gzclose(compressed);
using PixelType = unsigned short;
using myImage = itk::Image<PixelType, 3>;
itk::ImageFileReader<myImage>::Pointer reader = itk::ImageFileReader<myImage>::New();
reader->SetFileName(headerName.c_str());
itk::MetaImageIO::Pointer io = itk::MetaImageIO::New();
reader->SetImageIO(io);
try
{
reader->Update();
}
catch (const itk::ExceptionObject & e)
{
std::cerr << "exception in file reader " << std::endl;
std::cerr << e << std::endl;
result++;
}
std::cout << "Test whether absolute path in MetaIO header works" << std::endl;
// re-write header
headerName = argv[1];
headerName += "/AbsPathTest.mhd";
std::ofstream hdr2(headerName.c_str());
hdr2 << "ObjectType = Image" << std::endl
<< "NDims = 2" << std::endl
<< "DimSize = 32 32" << std::endl
<< "ElementType = MET_USHORT" << std::endl
<< "CompressedData = True" << std::endl
<< "ElementDataFile = " << dataName << std::endl;
hdr2.close();
reader->SetFileName(headerName.c_str());
try
{
reader->Update();
}
catch (const itk::ExceptionObject & e)
{
std::cerr << "Test failed " << std::endl;
std::cerr << e << std::endl;
result++;
}
return result == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
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