datastream.h

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/*
 *
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 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
 *             ##   ##  ##   ##  ##      ##      ##     ##
 *            ##   ##  ##   ##  ##      ##      ##     ##
 *            #####    #####   ##      ######  ##     ##
 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2013   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  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 program 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
 */

#ifndef datastream_h
#define datastream_h

#include "oofemcfg.h"

#include <sstream>
#include <cstdio>
#include <exception>
#include <stdexcept>

namespace oofem {
class OOFEM_EXPORT DataStream
{
public:
    virtual ~DataStream() { }
    virtual int read(int *data, int count) = 0;
    int read(int &data) { return this->read(&data, 1); }
    virtual int read(unsigned long *data, int count) = 0;
    int read(unsigned long &data) { return this->read(&data, 1); }
    virtual int read(long *data, int count) = 0;
    int read(long &data) { return this->read(&data, 1); }
    virtual int read(double *data, int count) = 0;
    int read(double &data) { return this->read(&data, 1); }
    virtual int read(char *data, int count) = 0;
    int read(char &data) { return this->read(&data, 1); }
    virtual int read(bool &data) = 0;
    int read(std :: string &data);

    virtual int write(const int *data, int count) = 0;
    int write(int data) { return this->write(&data, 1); }
    virtual int write(const unsigned long *data, int count) = 0;
    int write(unsigned long data) { return this->write(&data, 1); }
    virtual int write(const long *data, int count) = 0;
    int write(long data) { return this->write(&data, 1); }
    virtual int write(const double *data, int count) = 0;
    int write(double data) { return this->write(&data, 1); }
    virtual int write(const char *data, int count) = 0;
    int write(char data) { return this->write(&data, 1); }
    virtual int write(bool data) = 0;
    int write(const std :: string &data);
    int write(const char *data) { return this->write(std :: string(data)); }

    virtual int givePackSizeOfInt(int count) = 0;
    virtual int givePackSizeOfDouble(int count) = 0;
    virtual int givePackSizeOfChar(int count) = 0;
    virtual int givePackSizeOfBool(int count) = 0;
    virtual int givePackSizeOfLong(int count) = 0;
};


class OOFEM_EXPORT FileDataStream : public DataStream
{
public:
    class CantOpen : public std::runtime_error
    {
    public:
        std::string filename;
        CantOpen(std::string file): std::runtime_error("can't open file"), filename(std::move(file)) {}
    };

private:
    FILE *stream;
    std :: string filename;
public:
    FileDataStream(std :: string filename, bool write);

    virtual ~FileDataStream();

    virtual int read(int *data, int count);
    virtual int read(unsigned long *data, int count);
    virtual int read(long *data, int count);
    virtual int read(double *data, int count);
    virtual int read(char *data, int count);
    virtual int read(bool &data);

    virtual int write(const int *data, int count);
    virtual int write(const unsigned long *data, int count);
    virtual int write(const long *data, int count);
    virtual int write(const double *data, int count);
    virtual int write(const char *data, int count);
    virtual int write(bool data);

    virtual int givePackSizeOfInt(int count);
    virtual int givePackSizeOfDouble(int count);
    virtual int givePackSizeOfChar(int count);
    virtual int givePackSizeOfBool(int count);
    virtual int givePackSizeOfLong(int count);
};

} // end namespace oofem
#endif // datastream_h