ITK  5.2.0
Insight Toolkit
Examples/IO/IOPlugin.cxx
/*=========================================================================
*
* 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
*
* 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.
*
*=========================================================================*/
#include "itksys/SystemTools.hxx"
int
main(int argc, char * argv[])
{
if (argc < 3)
{
std::cout << "Usage: " << argv[0] << " FileName Output [FactoryPath]"
<< std::endl;
return EXIT_FAILURE;
}
const char * envName = "ITK_AUTOLOAD_PATH";
char * oldenv = getenv(envName);
std::string myenv = std::string(envName) + "=";
// if the FactoryPath argument is not "" then add it to the env
if (argc >= 4)
{
if (oldenv)
{
#if defined(_WIN32)
myenv += std::string(oldenv) + ";";
#else
myenv += std::string(oldenv) + ":";
#endif
}
myenv += std::string(argv[3]);
itksys::SystemTools::PutEnv(myenv.c_str());
}
std::cout << myenv << std::endl;
// List all registered factories
std::list<itk::ObjectFactoryBase *> factories =
const std::size_t numFactories = factories.size();
std::cout << "----- Registered factories -----" << std::endl;
std::cout << "Count: " << numFactories << std::endl;
if (!factories.empty())
{
for (auto & factory : factories)
{
std::cout << " Factory version: " << factory->GetITKSourceVersion()
<< std::endl
<< " Factory description: " << factory->GetDescription()
<< std::endl
<< " Library Path: " << factory->GetLibraryPath()
<< std::endl;
std::list<std::string> overrides = factory->GetClassOverrideNames();
std::list<std::string> names = factory->GetClassOverrideWithNames();
std::list<std::string> descriptions =
factory->GetClassOverrideDescriptions();
std::list<bool> enableflags = factory->GetEnableFlags();
std::list<std::string>::const_iterator n = names.begin();
std::list<std::string>::const_iterator d = descriptions.begin();
std::list<bool>::const_iterator e = enableflags.begin();
for (std::list<std::string>::const_iterator o = overrides.begin();
o != overrides.end();
++o, ++n, ++d, e++)
{
std::cout << " Override " << *o << " with " << *n << std::endl
<< " described as \"" << *d << "\"" << std::endl
<< " enabled " << *e << std::endl;
}
}
std::cout << "----- -----" << std::endl;
}
else
{
std::cout << "Failed to load any factories" << std::endl;
return EXIT_FAILURE;
}
int status = EXIT_SUCCESS;
{
using ImageNDType = itk::Image<unsigned char, 2>;
ReaderType::Pointer reader = ReaderType::New();
WriterType::Pointer writer = WriterType::New();
try
{
reader->SetFileName(argv[1]);
writer->SetFileName(argv[2]);
writer->SetInput(reader->GetOutput());
writer->Update();
reader->GetOutput()->Print(std::cout);
}
catch (const itk::ExceptionObject & ex)
{
std::cout << "------------------ Caught unexpected exception!"
<< std::endl;
std::cout << ex;
status = EXIT_FAILURE;
}
try
{
reader->SetFileName("foo");
reader->Update();
}
catch (const itk::ExceptionObject & ex)
{
std::cout << "------------------ Caught expected exception!"
<< std::endl;
std::cout << ex;
}
}
// make sure all object, such as the ImageIO held by the ImageReader
// are deleted before rehashing
// List all registered factories
std::cout << "----- Registered factories -----" << std::endl;
std::cout << "Count: " << factories.size() << std::endl;
if (!factories.empty())
{
for (auto & factory : factories)
{
std::cout << "check " << (void *)factory << std::endl;
std::cout << " Factory version: " << factory->GetITKSourceVersion()
<< std::endl
<< " Factory description: " << factory->GetDescription()
<< std::endl;
std::list<std::string> overrides = factory->GetClassOverrideNames();
std::cout << "ClassOverrideNames size: " << overrides.size()
<< std::endl;
std::list<std::string> names = factory->GetClassOverrideWithNames();
std::cout << "ClassOverrideWithNames size: " << names.size()
<< std::endl;
std::list<std::string> descriptions =
factory->GetClassOverrideDescriptions();
std::cout << "ClassOverrideDescriptions size: " << descriptions.size()
<< std::endl;
std::list<bool> enableflags = factory->GetEnableFlags();
std::cout << "EnableFlags size: " << enableflags.size() << std::endl;
std::list<std::string>::const_iterator n = names.begin();
std::list<std::string>::const_iterator d = descriptions.begin();
std::list<bool>::const_iterator e = enableflags.begin();
for (std::list<std::string>::const_iterator o = overrides.begin();
o != overrides.end();
++o, ++n, ++d, ++e)
{
std::cout << " Override " << *o << " with " << *n << std::endl
<< " described as \"" << *d << "\"" << std::endl
<< " enabled " << *e << std::endl;
}
}
std::cout << "----- -----" << std::endl;
}
if (numFactories != factories.size())
{
std::cout << "Number of factories after rehasing differ!" << std::endl;
return EXIT_FAILURE;
}
return status;
}
itkImageFileReader.h
itk::ObjectFactoryBase::ReHash
static void ReHash()
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::ImageFileWriter
Writes image data to a single file.
Definition: itkImageFileWriter.h:87
itk::ObjectFactoryBase::GetRegisteredFactories
static std::list< ObjectFactoryBase * > GetRegisteredFactories()
itkImageFileWriter.h
itk::Math::e
static constexpr double e
Definition: itkMath.h:54
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86