1 /****************************************************************************
2 * Copyright (c) 1998-2014,2015 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-on *
33 ****************************************************************************/
40 #include <curses.priv.h>
41 #include <termcap.h> /* ospeed */
42 #if defined(__FreeBSD__)
43 #include <sys/param.h>
47 * These systems use similar header files, which define B1200 as 1200, etc.,
48 * but can be overridden by defining USE_OLD_TTY so B1200 is 9, which makes all
49 * of the indices up to B115200 fit nicely in a 'short', allowing us to retain
50 * ospeed's type for compatibility.
52 #if NCURSES_OSPEED_COMPAT && ((defined(__FreeBSD__) && (__FreeBSD_version < 700000)) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__))
77 #include <sys/ttydev.h>
80 #endif /* USE_OLD_TTY */
82 MODULE_ID("$Id: lib_baudrate.c,v 1.37 2015/06/14 00:34:12 tom Exp $")
88 * Returns the current terminal's baud rate.
93 NCURSES_OSPEED s; /* values for 'ospeed' */
94 int sp; /* the actual speed */
97 #define DATA(number) { B##number, number }
99 static struct speed const speeds[] =
128 /* ifdef to prevent overflow when OLD_TTY is not available */
129 #if !(NCURSES_OSPEED_COMPAT && defined(__FreeBSD__) && (__FreeBSD_version > 700000))
146 _nc_baudrate(int OSpeed)
149 static int last_OSpeed;
150 static int last_baudrate;
157 if (OSpeed == last_OSpeed) {
158 result = last_baudrate;
163 for (i = 0; i < SIZEOF(speeds); i++) {
164 if ((int) speeds[i].s == OSpeed) {
165 result = speeds[i].sp;
171 if (OSpeed != last_OSpeed) {
172 last_OSpeed = OSpeed;
173 last_baudrate = result;
181 _nc_ospeed(int BaudRate)
187 for (i = 0; i < SIZEOF(speeds); i++) {
188 if (speeds[i].sp == BaudRate) {
189 result = speeds[i].s;
198 NCURSES_SP_NAME(baudrate) (NCURSES_SP_DCL0)
202 T((T_CALLED("baudrate(%p)"), (void *) SP_PARM));
205 * In debugging, allow the environment symbol to override when we're
206 * redirecting to a file, so we can construct repeatable test-cases
207 * that take into account costs that depend on baudrate.
210 if (IsValidTIScreen(SP_PARM)
211 && !NC_ISATTY(fileno(SP_PARM ? SP_PARM->_ofp : stdout))
212 && getenv("BAUDRATE") != 0) {
214 if ((ret = _nc_getenv_num("BAUDRATE")) <= 0)
216 ospeed = (NCURSES_OSPEED) _nc_ospeed(ret);
221 if (IsValidTIScreen(SP_PARM)) {
223 result = (int) cfgetospeed(&(TerminalOf(SP_PARM)->Nttyb));
224 ospeed = (NCURSES_OSPEED) _nc_ospeed(result);
225 #else /* !USE_OLD_TTY */
227 ospeed = (NCURSES_OSPEED) cfgetospeed(&(TerminalOf(SP_PARM)->Nttyb));
229 ospeed = (NCURSES_OSPEED) TerminalOf(SP_PARM)->Nttyb.sg_ospeed;
231 result = _nc_baudrate(ospeed);
233 TerminalOf(SP_PARM)->_baudrate = result;
245 return NCURSES_SP_NAME(baudrate) (CURRENT_SCREEN);