Help with adding GLIBC's termios routines


#1

Hi. I haven’t been using Julia very long, but I have been a programmer for 30 years doing everything from FORTRAN on a Honeywell CP-6 to C/C++, PowerBuilder, C#, Java, and PowerBasic on PCs and client/server platforms. I would like to try taking the termios routines from the GLIBC library and make them work in Julia. Can someone point me in the right direction of how and where to get started - maybe some examples?

Here’s the code to one of the routines. I want to wrap that and the others and make them usable from Julia.

Frank


/* Copyright (C) 1992,93,96,97,98,2001 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   The GNU C 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.
   The GNU C 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 GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <termios.h>
#include <errno.h>
#include <stddef.h>

struct speed_struct
{
  speed_t value;
  speed_t internal;
};

static const struct speed_struct speeds[] =
  {
#ifdef B0
    { 0, B0 },
#endif
#ifdef B50
    { 50, B50 },
#endif
#ifdef B75
    { 75, B75 },
#endif
#ifdef B110
    { 110, B110 },
#endif
#ifdef B134
    { 134, B134 },
#endif
#ifdef B150
    { 150, B150 },
#endif
#ifdef B200
    { 200, B200 },
#endif
#ifdef B300
    { 300, B300 },
#endif
#ifdef B600
    { 600, B600 },
#endif
#ifdef B1200
    { 1200, B1200 },
#endif
#ifdef B1200
    { 1200, B1200 },
#endif
#ifdef B1800
    { 1800, B1800 },
#endif
#ifdef B2400
    { 2400, B2400 },
#endif
#ifdef B4800
    { 4800, B4800 },
#endif
#ifdef B9600
    { 9600, B9600 },
#endif
#ifdef B19200
    { 19200, B19200 },
#endif
#ifdef B38400
    { 38400, B38400 },
#endif
#ifdef B57600
    { 57600, B57600 },
#endif
#ifdef B76800
    { 76800, B76800 },
#endif
#ifdef B115200
    { 115200, B115200 },
#endif
#ifdef B153600
    { 153600, B153600 },
#endif
#ifdef B230400
    { 230400, B230400 },
#endif
#ifdef B307200
    { 307200, B307200 },
#endif
#ifdef B460800
    { 460800, B460800 },
#endif
#ifdef B500000
    { 500000, B500000 },
#endif
#ifdef B576000
    { 576000, B576000 },
#endif
#ifdef B921600
    { 921600, B921600 },
#endif
#ifdef B1000000
    { 1000000, B1000000 },
#endif
#ifdef B1152000
    { 1152000, B1152000 },
#endif
#ifdef B1500000
    { 1500000, B1500000 },
#endif
#ifdef B2000000
    { 2000000, B2000000 },
#endif
#ifdef B2500000
    { 2500000, B2500000 },
#endif
#ifdef B3000000
    { 3000000, B3000000 },
#endif
#ifdef B3500000
    { 3500000, B3500000 },
#endif
#ifdef B4000000
    { 4000000, B4000000 },
#endif
  };


/* Set both the input and output baud rates stored in *TERMIOS_P to SPEED.  */
int
cfsetspeed (struct termios *termios_p, speed_t speed)
{
  size_t cnt;

  for (cnt = 0; cnt < sizeof (speeds) / sizeof (speeds[0]); ++cnt)
    if (speed == speeds[cnt].internal)
      {
	cfsetispeed (termios_p, speed);
	cfsetospeed (termios_p, speed);
	return 0;
      }
    else if (speed == speeds[cnt].value)
      {
	cfsetispeed (termios_p, speeds[cnt].internal);
	cfsetospeed (termios_p, speeds[cnt].internal);
	return 0;
      }

  __set_errno (EINVAL);

  return -1;
}