1 /****************************************************************************
2 * Copyright (c) 1998-2008,2009 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 (defined(__FreeBSD__) && (__FreeBSD_version < 700000)) || defined(__NetBSD__) || defined(__OpenBSD__)
77 #include <sys/ttydev.h>
80 #endif /* USE_OLD_TTY */
82 MODULE_ID("$Id: lib_baudrate.c,v 1.29 2009/02/21 17:22:13 tom Exp $")
88 * Returns the current terminal's baud rate.
93 int s; /* value for 'ospeed' is an index */
94 int sp; /* the actual speed */
97 static struct speed const speeds[] =
145 _nc_baudrate(int OSpeed)
148 static int last_OSpeed;
149 static int last_baudrate;
156 if (OSpeed == last_OSpeed) {
157 result = last_baudrate;
162 for (i = 0; i < SIZEOF(speeds); i++) {
163 if (speeds[i].s == OSpeed) {
164 result = speeds[i].sp;
170 if (OSpeed == last_OSpeed) {
171 last_OSpeed = OSpeed;
172 last_baudrate = result;
180 _nc_ospeed(int BaudRate)
186 for (i = 0; i < SIZEOF(speeds); i++) {
187 if (speeds[i].sp == BaudRate) {
188 result = speeds[i].s;
197 NCURSES_SP_NAME(baudrate) (NCURSES_SP_DCL0)
201 T((T_CALLED("baudrate(%p)"), SP_PARM));
204 * In debugging, allow the environment symbol to override when we're
205 * redirecting to a file, so we can construct repeatable test-cases
206 * that take into account costs that depend on baudrate.
209 if (IsValidTIScreen(SP_PARM)
210 && !isatty(fileno(SP_PARM ? SP_PARM->_ofp : stdout))
211 && getenv("BAUDRATE") != 0) {
213 if ((ret = _nc_getenv_num("BAUDRATE")) <= 0)
215 ospeed = _nc_ospeed(ret);
220 if (IsValidTIScreen(SP_PARM)) {
222 result = cfgetospeed(&(TerminalOf(SP_PARM)->Nttyb));
223 ospeed = _nc_ospeed(result);
224 #else /* !USE_OLD_TTY */
226 ospeed = cfgetospeed(&(TerminalOf(SP_PARM)->Nttyb));
228 ospeed = TerminalOf(SP_PARM)->Nttyb.sg_ospeed;
230 result = _nc_baudrate(ospeed);
232 TerminalOf(SP_PARM)->_baudrate = result;
244 return NCURSES_SP_NAME(baudrate) (CURRENT_SCREEN);