MDPHeader.hpp

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#pragma ident "$Id: MDPHeader.hpp 3140 2012-06-18 15:03:02Z susancummins $"

//============================================================================
//
//  This file is part of GPSTk, the GPS Toolkit.
//
//  The GPSTk 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
//  any later version.
//
//  The GPSTk 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 GPSTk; if not, write to the Free Software Foundation,
//  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
//  
//  Copyright 2004, The University of Texas at Austin
//
//============================================================================

//============================================================================
//
//This software 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 MDPHEADER_HPP
#define MDPHEADER_HPP

#include <map>
#include <iostream>

#include <Exception.hpp>
#include <CommonTime.hpp>
#include <StringUtils.hpp>
#include <BinUtils.hpp>

#include <FFData.hpp>
#include <FFStream.hpp>
#include "DataStatus.hpp"

#include <RinexObsData.hpp>

#if !defined( __SUNPRO_CC ) && !defined( _MSC_VER )
#include <stdint.h>
#endif


namespace gpstk
{

   class MDPStream;

   class MDPHeader : public FFData, public CRCDataStatus
   {
   public:
      MDPHeader() throw() : id(0),length(0),crc(0)
      {length=myLength;}

      // Returns whether or not this MDPData is valid.
      bool isValid() const {return good();}

      virtual bool isData() const {return true;}

      virtual std::string encode() const throw();
         
      virtual void decode(std::string str) throw();

      virtual std::string getName() const {return "hdr";}

      void dump(std::ostream& out) const throw();

      void setCRC(std::string& str) const throw(FFStreamError);
         
      void checkCRC(std::string str) throw();

      unsigned short id;              
      gpstk::CommonTime time;            
      unsigned short freshnessCount;  

      // These items need to be mutable so they can be set when an object
      // is sent to a stream.
      mutable unsigned short length;  
      mutable unsigned short crc;     

      static const uint16_t myLength;  
      static const uint16_t frameWord; 
      static int debugLevel;
      static bool hexDump;

      void readHeader(MDPStream& s)
         throw(FFStreamError, EndOfFile);

      std::string readBody(MDPStream& s)
         throw(FFStreamError, EndOfFile);

   protected:
      virtual void reallyPutRecord(FFStream& s) const 
         throw(std::exception, StringUtils::StringException, 
               FFStreamError);

      virtual void reallyGetRecord(FFStream& s)
         throw(std::exception, StringUtils::StringException, 
               FFStreamError, EndOfFile);
   }; // class MDPHeader

} // namespace gpstk

#endif // MDPHEADER_HPP

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