test/XML/cxx_main.cpp

Go to the documentation of this file.

// @HEADER
// ***********************************************************************
//
//                    Teuchos: Common Tools Package
//                 Copyright (2004) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
// @HEADER

#include "Teuchos_ConfigDefs.hpp"
#include "Teuchos_XMLObject.hpp"
#include "Teuchos_GlobalMPISession.hpp"
#include "Teuchos_StringInputSource.hpp"
#include "Teuchos_FileInputSource.hpp"
#include "Teuchos_Version.hpp"


using std::string;
using Teuchos::XMLObject;
using Teuchos::StringInputSource;
using Teuchos::FileInputSource;

/* Test of Teuchos XML handling classes */

int main(int argc, char** argv)
{
  std::cout << Teuchos::Teuchos_Version() << std::endl << std::endl;

  Teuchos::GlobalMPISession mpiSession(&argc, &argv);

  try
    {
      /* create an XML object */
      XMLObject problem("Problem");
      XMLObject solver("Solver");
      XMLObject prec("Preconditioner");

      solver.addAttribute("type", "gmres");
      solver.addInt("maxiters", 1000);
      solver.addInt("restarts", 100);
      solver.addDouble("tol", 1.0e-10);

      solver.addChild(prec);

      prec.addAttribute("type", "ILUk");
      prec.addInt("k", 2);

      problem.addChild(solver);

      std::string str = problem.toString();
      std::cerr << str << std::endl;

      /* parse XML in a std::string */
      StringInputSource src(str);
      XMLObject reread = src.getObject();
      
      std::cerr << reread << std::endl;

      /* write to a file, and then read and parse the file */
      std::ofstream of("tmp.xml");
      of << reread << std::endl;
      
      FileInputSource fileSrc("tmp.xml");
      XMLObject fileXML = fileSrc.getObject();
      
      std::cerr << fileXML << std::endl;

      return 0;
    }
  catch(std::exception& e)
    {
      std::cerr << e.what() << std::endl;
    }
}