CacheUnMarshaller.h

// -*- mode: c++; c-basic-offset:4 -*-
 
// This file is part of Hyrax, A C++ implementation of the OPeNDAP Data
// Access Protocol.
 
// Copyright (c) 2016 OPeNDAP, Inc.
// Author: James Gallagher <jgallagher@opendap.org>
//
// This library 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 (at your option) any later version.
//
// This library 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 this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
 
#ifndef cache_unmarshaller_h
#define cache_unmarshaller_h 1
 
#include <cassert>
#include <istream>
 
#include <libdap/UnMarshaller.h>   // from libdap
 
// namespace bes {

class CacheUnMarshaller: public libdap::UnMarshaller {
private:
    std::istream &d_in;
 
    CacheUnMarshaller();
    CacheUnMarshaller(const CacheUnMarshaller &um);
    CacheUnMarshaller & operator=(const CacheUnMarshaller &);
 
public:
    CacheUnMarshaller(std::istream &in) : UnMarshaller(), d_in(in) {
        assert(sizeof(std::streamsize) >= sizeof(int64_t));
        // This will cause exceptions to be thrown on i/o errors. The exception
        // will be ostream::failure
        d_in.exceptions(std::istream::failbit | std::istream::badbit);
    }
 
    virtual ~CacheUnMarshaller() { }
 
    virtual void get_byte(libdap::dods_byte &val);
 
    virtual void get_int16(libdap::dods_int16 &val);
    virtual void get_int32(libdap::dods_int32 &val);
 
    virtual void get_float32(libdap::dods_float32 &val);
    virtual void get_float64(libdap::dods_float64 &val);
 
    virtual void get_uint16(libdap::dods_uint16 &val);
    virtual void get_uint32(libdap::dods_uint32 &val);
 
    virtual void get_str(std::string &val);
    virtual void get_url(std::string &val);
 
    virtual void get_opaque(char *val, unsigned int len);
    virtual void get_int(int &val);
 
    virtual void get_vector(char **val, unsigned int &num, libdap::Vector &);
    virtual void get_vector(char **val, unsigned int &num, int width, libdap::Vector &);
 
    virtual void dump(ostream &strm) const;
};
 
//} // namespace bes
 
#endif // cache_unmarshaller_h