1 /****************************************************************************
2 * Copyright (c) 1998,2000,2002 Free Software Foundation, Inc. *
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5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
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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 *
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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 ****************************************************************************/
41 #include <curses.priv.h>
42 #include <term.h> /* cur_term, pad_char */
43 #include <termcap.h> /* ospeed */
46 * These systems use similar header files, which define B1200 as 1200, etc.,
47 * but can be overridden by defining USE_OLD_TTY so B1200 is 9, which makes all
48 * of the indices up to B115200 fit nicely in a 'short', allowing us to retain
49 * ospeed's type for compatibility.
51 #if defined(__NetBSD__) || defined(__OpenBSD__)
76 #include <sys/ttydev.h>
79 #endif /* USE_OLD_TTY */
81 MODULE_ID("$Id: lib_baudrate.c,v 1.22 2002/01/19 23:07:53 Andrey.A.Chernov Exp $")
87 * Returns the current terminal's baud rate.
92 int s; /* value for 'ospeed' is an index */
93 int sp; /* the actual speed */
96 static struct speed const speeds[] =
144 _nc_baudrate(int OSpeed)
146 static int last_OSpeed;
147 static int last_baudrate;
152 if (OSpeed == last_OSpeed) {
153 result = last_baudrate;
157 for (i = 0; i < SIZEOF(speeds); i++) {
158 if (speeds[i].s == OSpeed) {
159 result = speeds[i].sp;
164 last_baudrate = result;
170 _nc_ospeed(int BaudRate)
176 for (i = 0; i < SIZEOF(speeds); i++) {
177 if (speeds[i].sp == BaudRate) {
178 result = speeds[i].s;
191 T((T_CALLED("baudrate()")));
194 * In debugging, allow the environment symbol to override when we're
195 * redirecting to a file, so we can construct repeatable test-cases
196 * that take into account costs that depend on baudrate.
199 if (SP && !isatty(fileno(SP->_ofp))
200 && getenv("BAUDRATE") != 0) {
202 if ((ret = _nc_getenv_num("BAUDRATE")) <= 0)
204 ospeed = _nc_ospeed(ret);
210 result = cfgetospeed(&cur_term->Nttyb);
211 ospeed = _nc_ospeed(result);
212 #else /* !USE_OLD_TTY */
214 ospeed = cfgetospeed(&cur_term->Nttyb);
216 ospeed = cur_term->Nttyb.sg_ospeed;
218 result = _nc_baudrate(ospeed);
221 cur_term->_baudrate = result;