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/* $OpenBSD: lib_baudrate.c,v 1.3 1997/12/14 23:15:47 millert Exp $ */
/***************************************************************************
* COPYRIGHT NOTICE *
****************************************************************************
* ncurses is copyright (C) 1992-1995 *
* Zeyd M. Ben-Halim *
* zmbenhal@netcom.com *
* Eric S. Raymond *
* esr@snark.thyrsus.com *
* *
* Permission is hereby granted to reproduce and distribute ncurses *
* by any means and for any fee, whether alone or as part of a *
* larger distribution, in source or in binary form, PROVIDED *
* this notice is included with any such distribution, and is not *
* removed from any of its header files. Mention of ncurses in any *
* applications linked with it is highly appreciated. *
* *
* ncurses comes AS IS with no warranty, implied or expressed. *
* *
***************************************************************************/
/*
* lib_baudrate.c
*
*/
#include <curses.priv.h>
#include <term.h> /* cur_term, pad_char */
MODULE_ID("Id: lib_baudrate.c,v 1.10 1997/12/06 23:38:48 tom Exp $")
/*
* int
* baudrate()
*
* Returns the current terminal's baud rate.
*
*/
struct speed {
speed_t s;
int sp;
};
static struct speed const speeds[] = {
{B0, 0},
{B50, 50},
{B75, 75},
{B110, 110},
{B134, 134},
{B150, 150},
{B200, 200},
{B300, 300},
{B600, 600},
{B1200, 1200},
{B1800, 1800},
{B2400, 2400},
{B4800, 4800},
{B9600, 9600},
#ifdef B19200
{B19200, 19200},
#else
#ifdef EXTA
{EXTA, 19200},
#endif
#endif
#ifdef B38400
{B38400, 38400},
#else
#ifdef EXTB
{EXTB, 38400},
#endif
#endif
#ifdef B57600
{B57600, 57600},
#endif
#ifdef B115200
{B115200, 115200},
#endif
#ifdef B230400
{B230400, 230400},
#endif
#ifdef B460800
{B460800, 460800},
#endif
};
int
baudrate(void)
{
size_t i;
int ret;
#ifdef TRACE
char *debug_rate;
#endif
T((T_CALLED("baudrate()")));
/*
* In debugging, allow the environment symbol to override when we're
* redirecting to a file, so we can construct repeatable test-cases
* that take into account costs that depend on baudrate.
*/
#ifdef TRACE
if (SP && !isatty(fileno(SP->_ofp))
&& (debug_rate = getenv("BAUDRATE")) != 0) {
if (sscanf(debug_rate, "%d", &ret) != 1)
ret = 9600;
returnCode(ret);
}
else
#endif
#ifdef TERMIOS
ret = cfgetospeed(&cur_term->Nttyb);
#else
ret = cur_term->Nttyb.sg_ospeed;
#endif
if(ret < 0 || (speed_t)ret > speeds[SIZEOF(speeds)-1].s)
returnCode(ERR);
SP->_baudrate = ERR;
for (i = 0; i < SIZEOF(speeds); i++)
if (speeds[i].s == (speed_t)ret)
{
SP->_baudrate = speeds[i].sp;
break;
}
returnCode(SP->_baudrate);
}
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