InOutFramework.hpp

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//==============================================================================
//
//  This file is part of GNSSTk, the ARL:UT GNSS Toolkit.
//
//  The GNSSTk 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 3.0 of the License, or
//  any later version.
//
//  The GNSSTk 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 GNSSTk; if not, write to the Free Software Foundation,
//  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
//
//  This software was developed by Applied Research Laboratories at the
//  University of Texas at Austin.
//  Copyright 2004-2022, The Board of Regents of The University of Texas System
//
//==============================================================================
 
//==============================================================================
//
//  This software was developed by Applied Research Laboratories at the
//  University of Texas at Austin, under contract to an agency or agencies
//  within the U.S. Department of Defense. The U.S. Government retains all
//  rights to use, duplicate, distribute, disclose, or release this software.
//
//  Pursuant to DoD Directive 523024
//
//  DISTRIBUTION STATEMENT A: This software has been approved for public
//                            release, distribution is unlimited.
//
//==============================================================================
 
#ifndef INOUTFRAMEWORK_HPP
#define INOUTFRAMEWORK_HPP
 
#include "LoopedFramework.hpp"
 
 
namespace gnsstk
{
 
 
   template<class IType, class OType>
   class InOutFramework : public LoopedFramework
   {
   public:
      static const int OUTPUT_ERROR = 1;
 
      InOutFramework( const std::string& applName,
                      const std::string& applDesc )
            noexcept
            : LoopedFramework(applName, applDesc)
      {};
 
 
      virtual ~InOutFramework() {};
 
 
      bool initialize( int argc,
                       char *argv[],
                       bool pretty = true )
         noexcept
      {
         using std::ios;
 
         CommandOptionWithAnyArg
            inputOpt('i', "input",
                     "A file to take the input from. The default is stdin."),
            outputOpt('o', "output",
                      "A file to receive the output. The default is stdout.");
 
         if (!LoopedFramework::initialize(argc, argv, pretty))
            return false;
 
         if (inputOpt.getCount())
            inputFn = inputOpt.getValue()[0];
 
 
         if (inputFn=="-" || inputFn=="")
         {
            input.copyfmt(std::cin);
            input.clear(std::cin.rdstate());
            input.ios::rdbuf(std::cin.rdbuf());
            inputFn = "<stdin>";
         }
         else
         {
            input.open(inputFn.c_str(), std::ios::in);
         }
 
 
         if (!input)
         {
            std::cerr << "Could not open: " << inputFn << std::endl;
            exitCode = gnsstk::BasicFramework::EXIST_ERROR;
            return false;
         }
 
         if (outputOpt.getCount())
            outputFn = outputOpt.getValue()[0];
 
         if (outputFn=="-" || outputFn=="")
         {
            output.copyfmt(std::cout);
            output.clear(std::cout.rdstate());
            output.ios::rdbuf(std::cout.rdbuf());
            outputFn = "<stdout>";
         }
         else
         {
            output.open(outputFn.c_str(), std::ios::out);
         }
 
         if (!output)
         {
            std::cerr << "Could not open: " << outputFn << std::endl;
            exitCode = OUTPUT_ERROR;
            return false;
         }
 
         if (debugLevel)
            std::cerr << "Sending output to " << outputFn << std::endl
                      << "Reading input from " << inputFn << std::endl;
 
         return true;
      }  // End of method 'InOutFramework::initialize()'
 
 
      IType input;
 
      OType output;
 
      std::string inputFn, outputFn;
 
 
   private:
 
 
         // Do not allow the use of the default constructor.
      InOutFramework();
 
 
   }; // End of class 'InOutFramework'
 
 
}  // End of namespace gnsstk
#endif   // INOUTFRAMEWORK_HPP