TimeSystem.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 GNSSTK_TIMESYSTEM_HPP
#define GNSSTK_TIMESYSTEM_HPP
 
#include <iostream>
#include <string>
#include "EnumIterator.hpp"
 
namespace gnsstk
{
   enum class TimeSystem
   {
         // Add new systems BEFORE count, then
         // add to asString() in TimeSystem.cpp and make parallel
         // to this enum.
 
         // Unknown MUST BE FIRST, and must = 0
      Unknown = 0, 
      Any,         
      GPS,         
      GLO,         
      GAL,         
      QZS,         
      BDT,         
      IRN,         
      UTC,         
      TAI,         
      TT,          
      TDB,         
         // Last MUST BE LAST
      Last        
   };
 
   typedef EnumIterator<TimeSystem,TimeSystem::Unknown,TimeSystem::Last> TimeSystemIterator;
 
 
   double getLeapSeconds(const int yr, const int mon, const double day);
 
   double getTimeSystemCorrection(
      const TimeSystem inTS, const TimeSystem outTS,
      const int year, const int month, const double day);
 
   std::ostream& operator<<(std::ostream& os, const TimeSystem ts);
 
   namespace StringUtils
   {
      std::string asString(TimeSystem ts);
      TimeSystem asTimeSystem(const std::string& s);
   }
 
}   // end namespace
 
#endif // GNSSTK_TIMESYSTEM_HPP