text: /*=========================================================================
   *
   *  Copyright Insight Software Consortium
   *
   *  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 "itkRegularExpressionSeriesFileNames.h"
  
  int itkRegularExpressionSeriesFileNamesTest(int ac, char* av[])
  {
  
    if(ac < 2)
    {
      std::cerr << "Usage: " << av[0] << " Directory\n";
      return EXIT_FAILURE;
    }
  
  
    itk::RegularExpressionSeriesFileNames::Pointer fit = itk::RegularExpressionSeriesFileNames::New();
    fit->SetDirectory(av[1]);
    fit->SetRegularExpression("[^.]*.(.*)");
    fit->SetSubMatch(1);
  
    std::vector<std::string> names = fit->GetFileNames();
    std::vector<std::string>::iterator nit;
  
  // normal sort
    std::cout << "Normal Sort--------" << std::endl;
    for (nit = names.begin();
         nit != names.end();
         ++nit)
      {
      std::cout << "File: " << (*nit).c_str() << std::endl;
      }
  
  // numeric sort
    fit->SetRegularExpression("[^0-9]*([0-9]*)");
    fit->NumericSortOn();
    fit->SetSubMatch(1);
    names = fit->GetFileNames();
    std::cout << "Numeric Sort--------" << std::endl;
    for (nit = names.begin();
         nit != names.end();
         ++nit)
      {
      std::cout << "File: " << (*nit).c_str() << std::endl;
      }
  
    std::cout << fit;
  
    // Show only those files with numbers in the names
    fit->SetRegularExpression("([0-9]+)");
    fit->NumericSortOn();
    fit->SetSubMatch(1);
    names = fit->GetFileNames();
    std::cout << "Numeric sort on only files with numbers in the names--------" << std::endl;
    for (nit = names.begin();
         nit != names.end();
         ++nit)
      {
      std::cout << "File: " << (*nit).c_str() << std::endl;
      }
  
  
    std::cout << "Vector size: " << names.size() << std::endl;
  
    // Show only those files with numbers in the names followed by other
    // numbers.  Sort them by the first set of numbers.
    fit->SetRegularExpression("([0-9]+)[^0-9]+([0-9]+)");
    fit->NumericSortOn();
    fit->SetSubMatch(1);
    names = fit->GetFileNames();
    std::cout << "Numeric sort on only files with numbers in the names.  Sort on the first set of numbers.--------" << std::endl;
    for (nit = names.begin();
         nit != names.end();
         ++nit)
      {
      std::cout << "File: " << (*nit).c_str() << std::endl;
      }
  
    // Show only those files with numbers in the names followed by other
    // numbers.  Sort them by the second set of numbers.
    fit->SetRegularExpression("([0-9]+)[^0-9]+([0-9]+)");
    fit->NumericSortOn();
    fit->SetSubMatch(2);
    names = fit->GetFileNames();
    std::cout << "Numeric sort on only files with numbers in the names.  Sort on the second set of numbers.--------" << std::endl;
    for (nit = names.begin();
         nit != names.end();
         ++nit)
      {
      std::cout << "File: " << (*nit).c_str() << std::endl;
      }
  
  
    std::cout << "Vector size: " << names.size() << std::endl;
  
    std::cout << "Directory: " << fit->GetDirectory() << std::endl;
    std::cout << "RegularExpression: " << fit->GetRegularExpression() << std::endl;
    std::cout << "SubMatch: " << fit->GetSubMatch() << std::endl;
  
  
    return EXIT_SUCCESS;
  
  }
  