//////////////////////////////////////////////////////////////////////////
//
//       (C) Copyright 2003 by GATS, Inc.
//           11864 Canon Blvd., STE 101
//           Newport News, VA 23606     
//
//   All Rights Reserved. No part of this software or publication may be
//   reproduced, stored in a retrieval system, or transmitted, in any form
//   or by any means, electronic, mechanical, photocopying, recording, or
//   otherwise without the prior written permission of GATS, Inc.
// 
///////////////////////////////////////////////////////////////////////////
// Class: NMC_FileReader
//
// Filename:  NMC_FileReader.h
//
// Description:  Header file for NMC_FileReader class.
//               The class has functions to read a NMC file one record at a 
//	         time, a block of records at a time, or all records at once.
//
// Author:      Y.Wang
//              (757)873-5920
//              <ywang@gats-inc.com>
//////////////////////////////////////////////////////////////////////////

#ifndef _NMC_FileReader_h
#define _NMC_FileReader_h

#include <exception>
#include <string>
#include "NMCdata.h"

class NMC_FileReader
{
public:

   NMC_FileReader();

   NMC_FileReader(const std::string &filename)
                   throw(const char*, std::exception);
   void Read_netCDF_NMC_data(NMCdata &nmcdata)
		              throw(const char*, std::exception);
   void Read_netCDF_NMC_data(float lat,float lon,float *press_nmc,
                              float *temp_nmc,
                              float *gheight_nmc,
                              double *)
		              throw(const char*, std::exception);

   virtual ~NMC_FileReader();

   void SetUp(const std::string &filename)
              throw(const char*, std::exception);

   void convert_hgt2ztp(float*, double*);
   void convert_hgt2ztp(float*, double*, float);
   double calculate_gravity(float, float);
   int getStatus();

protected:
   void BasicInitialize();

private:
   std::string filename;
   bool        file_is_open;
   bool        setup_attempted;
   bool        setup_succeeded;

   int fd;    //netCDF file ID
};

#endif