AshtechEPB.cpp

Go to the documentation of this file.

#pragma ident "$Id: AshtechEPB.cpp 824 2007-10-10 14:21:58Z ocibu $"

//============================================================================
//
//  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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.
//
//=============================================================================

#include "StringUtils.hpp"
#include "BinUtils.hpp"

#include "AshtechEPB.hpp"
#include "AshtechStream.hpp"

using namespace std;

namespace gpstk
{
   const char* AshtechEPB::myId = "EPB";

   //---------------------------------------------------------------------------
   void AshtechEPB::reallyGetRecord(FFStream& ffs)
      throw(std::exception, FFStreamError, EndOfFile)
   {
      AshtechStream& stream=dynamic_cast<AshtechStream&>(ffs);

      // make sure the object is reset before starting the search
      clear(fmtbit | lenbit | crcbit);
      string& rawData = stream.rawData;

      // If this object doesn't have an id set yet, assume that the streams
      // most recent read id is what we need to be
      if (id == "" && rawData.size()>=10 && 
          rawData.substr(0,7) == preamble)
         id = rawData.substr(7,3);

      // If that didn't work, or this is object is not of the right type,
      // then give up.
      if (id == "" || !checkId(id))
         return;

      readBody(stream);
   }

   //---------------------------------------------------------------------------
   void AshtechEPB::decode(const std::string& data)
      throw(std::exception, FFStreamError)
   {
      using BinUtils::decodeVar;
      using gpstk::StringUtils::asInt;

      string str(data);

      if (str.length() == 138)
      {
         ascii = false;
         header      = str.substr(0,11); str.erase(0,11);
         prn         = asInt(str.substr(0,2));
         str.erase(0,3);

         for (int s=1; s<=3; s++)
            for (int w=1; w<=10; w++)
               word[s][w] = decodeVar<uint32_t>(str);

         unsigned cksum = decodeVar<uint16_t>(str);
         clear(ios_base::goodbit);
      }
   }

   //---------------------------------------------------------------------------
   void AshtechEPB::dump(ostream& out) const throw()
   {
      ostringstream oss;
      using gpstk::StringUtils::asString;
      using gpstk::StringUtils::leftJustify;

      AshtechData::dump(out);
      oss << getName() << "0:" << " prn:" << prn << endl;

      oss << setfill('0') << hex;
      for (int s=1; s<=3; s++)
      {
         for (int w=1; w<=10; w++)
         {
            if ((w % 5) == 1)
               oss << getName() << s*2+w/5-1 << ": ";
            oss << setw(8) << uppercase << word[s][w] << "  ";
            if ((w % 5) == 0)
               oss << endl;
         }
      }

      out << oss.str() << flush;
   }
} // namespace gpstk

---