HDF4_DMR.h

//  This file is part of the hdf4 data handler for the OPeNDAP data server.
//
// Author:   Kent Yang <myang6@hdfgroup.org>
// Copyright (c) The HDF Group
// The idea is borrowed from GDAL OPeNDAP handler that is implemented by
// James Gallagher<jgallagher@opendap.org>
 
#ifndef HDF4_DMR_H_
#define HDF4_DMR_H_
 
#include "config.h"
 
#include "hdf.h"
#include "mfhdf.h"
 
#ifdef USE_HDFEOS2_LIB
#include "HdfEosDef.h"
#endif
 
#include <libdap/DMR.h>
#include <libdap/InternalErr.h>
 

class HDF4DMR : public libdap::DMR {
private:
    int sdfd = -1;
    int fileid = -1;
    int gridfd = -1;
    int swathfd = -1;
 
    void m_duplicate(const HDF4DMR &src) 
    { 
        sdfd = src.sdfd; 
        fileid = src.fileid;
        gridfd = src.gridfd;
        swathfd = src.swathfd;
    }
 
public:
    explicit HDF4DMR(const libdap::DMR *dmr) : libdap::DMR(*dmr) {}
    HDF4DMR(libdap::D4BaseTypeFactory *factory,const string &name):libdap::DMR(factory,name) {}
 
    HDF4DMR(const HDF4DMR &rhs) : libdap::DMR(rhs) {
        m_duplicate(rhs);
    }
 
    HDF4DMR & operator= (const HDF4DMR &rhs) {
        if (this == &rhs)
            return *this;
 
        libdap::DMR::operator=(rhs);
        m_duplicate(rhs);
 
        return *this;
    }
 
    ~HDF4DMR() override {
 
        if (sdfd != -1)
            SDend(sdfd);
        if (fileid != -1)
            Hclose(fileid);
 
#ifdef USE_HDFEOS2_LIB
        if (gridfd != -1)
            GDclose(gridfd);
        if (swathfd != -1)
            SWclose(swathfd);
#endif
    }
 
    void setHDF4Dataset(const int sdfd_in, const int fileid_in, const int gridfd_in, const int swathfd_in ) { 
        sdfd = sdfd_in; 
        fileid = fileid_in;
        gridfd = gridfd_in;
        swathfd = swathfd_in;
    }
 
    void setHDF4Dataset(const int sdfd_in,const int fileid_in) {
        sdfd = sdfd_in;
        fileid = fileid_in;
    }
};
 
#endif