PosixProcess.h

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/*****************************************************************************
 * vim:tw=78
 *
 * Copyright (C) 2021 Bjarne von Horn (vh at igh dot de).
 *
 * This file is part of the PdCom library.
 *
 * The PdCom 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 3 of the License, or (at your
 * option) any later version.
 *
 * The PdCom 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 the PdCom library. If not, see <http://www.gnu.org/licenses/>.
 *
 *****************************************************************************/

#ifndef PDCOM5_POSIXPROCESS_H
#define PDCOM5_POSIXPROCESS_H

#include "Exception.h"
#include "visibility.h"

#include <algorithm>
#include <string>

namespace PdCom {


class PDCOM5_PUBLIC PosixProcess
{
  public:
    struct PDCOM5_PUBLIC ConnectionFailed : Exception
    {
        ConnectionFailed() : Exception("Connection failed") {}
    };
    struct PDCOM5_PUBLIC ReadFailure : Exception
    {
        int errno_;
        ReadFailure(int e) :
            Exception("Read failure, errno: " + std::to_string(e)), errno_(e)
        {}
    };
    struct PDCOM5_PUBLIC WriteFailure : Exception
    {
        int errno_;
        WriteFailure(int e) :
            Exception("Write failure, errno: " + std::to_string(e)), errno_(e)
        {}
    };

    PosixProcess(const char *host, unsigned short port);


    virtual ~PosixProcess();

    PosixProcess(PosixProcess &&o) noexcept : fd_(-1) { std::swap(o.fd_, fd_); }

    PosixProcess &operator=(PosixProcess &&o) noexcept
    {
        PosixProcess tmp(std::move(o));
        std::swap(tmp.fd_, fd_);
        return *this;
    }

  protected:
    int fd_;

    void posixWrite(const char *buf, size_t count);
    size_t posixRead(char *buf, size_t count);
};

}  // namespace PdCom

#endif  // PDCOM5_POSIXPROCESS_H