# DiffFile.cxx

    /*=========================================================================

      Program: GDCM (Grassroots DICOM). A DICOM library
      Module:  $URL$

      Copyright (c) 2006-2010 Mathieu Malaterre
      All rights reserved.
      See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.

         This software is distributed WITHOUT ANY WARRANTY; without even
         the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
         PURPOSE.  See the above copyright notice for more information.

    =========================================================================*/
    #include "gdcmReader.h"

    int main(int argc, char *argv[])
    {
      if( argc < 3 )
        {
        std::cerr << argv[0] << " input1.dcm input2.dcm" << std::endl;
        return 1;
        }
      const char *filename1 = argv[1];
      const char *filename2 = argv[2];

      gdcm::Reader reader1;
      reader1.SetFileName( filename1 );
      if( !reader1.Read() )
        {
        return 1;
        }

      gdcm::Reader reader2;
      reader2.SetFileName( filename2 );
      if( !reader2.Read() )
        {
        return 1;
        }

      const gdcm::File &file1 = reader1.GetFile();
      const gdcm::File &file2 = reader2.GetFile();

      const gdcm::DataSet &ds1 = file1.GetDataSet();
      const gdcm::DataSet &ds2 = file2.GetDataSet();

      gdcm::DataSet::ConstIterator it1 = ds1.Begin();
      gdcm::DataSet::ConstIterator it2 = ds2.Begin();

      const gdcm::DataElement &de1 = *it1;
      const gdcm::DataElement &de2 = *it2;
      if( de1 == de2 )
        {
        }
      while( it1 != ds1.End() && it2 != ds2.End() && *it1 == *it2 )
        {
        ++it1;
        ++it2;
        }

      if( it1 != ds1.End() || it2 != ds2.End() )
        {
        std::cerr << "Problem with:" << std::endl;
        if( it1 != ds1.End() )
          {
          std::cerr << "ds1: " << *it1 << std::endl;
          }
        if( it2 != ds2.End() )
          {
          std::cerr << "ds2: " << *it2 << std::endl;
          }
        return 1;
        }

      return 0;
    }