Fifo.hpp

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/* INDI Server for protocol version 1.7.
 * Copyright (C) 2007 Elwood C. Downey <[email protected]>
                 2013 Jasem Mutlaq <[email protected]>
                 2022 Ludovic Pollet
    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
*/
#pragma once
 
#include <ev++.h>
#include <string>
 
class Fifo
{
        std::string name; /* Path to FIFO for dynamic startups & shutdowns of drivers */
 
        char buffer[1024];
        int bufferPos = 0;
        int fd = -1;
        ev::io fdev;
 
        void close();
        void open();
        void processLine(const char * line);
 
        /* Read commands from FIFO and process them. Start/stop drivers accordingly */
        void read();
        void ioCb(ev::io &watcher, int revents);
    public:
        Fifo(const std::string &name);
        void listen()
        {
            open();
        }
};
 
extern Fifo* fifoHandle;