2 * Copyright (c) 1980, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 static const char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93";
38 #include <sys/select.h>
51 static int keyboard_dispatch(int ch);
57 struct timeval last, intvl, now, tm;
60 /* Set initial timings */
61 gettimeofday(&last, NULL);
62 intvl.tv_sec = delay / 1000000;
63 intvl.tv_usec = delay % 1000000;
68 /* Determine interval to sleep */
69 (void)gettimeofday(&now, NULL);
70 tm.tv_sec = last.tv_sec + intvl.tv_sec - now.tv_sec;
71 tm.tv_usec = last.tv_usec + intvl.tv_usec - now.tv_usec;
72 while (tm.tv_usec < 0) {
73 tm.tv_usec += 1000000;
76 while (tm.tv_usec >= 1000000) {
77 tm.tv_usec -= 1000000;
81 /* We have to update screen immediately */
83 gettimeofday(&last, NULL);
89 FD_SET(STDIN_FILENO, &rfds);
90 n = select(STDIN_FILENO + 1, &rfds, NULL, NULL, &tm);
93 /* Read event on stdin */
96 if (keyboard_dispatch(ch) == 0) {
104 intvl.tv_sec = delay / 1000000;
105 intvl.tv_usec = delay % 1000000;
110 if (n < 0 && errno != EINTR)
113 /* Timeout or signal. Call display another time */
115 gettimeofday(&last, NULL);
121 keyboard_dispatch(int ch)
129 if (ch >= 'A' && ch <= 'Z')
132 if (ch == CTRL('l')) {
136 if (ch == CTRL('g')) {
145 if (ch == erasechar() && col > 0) {
146 if (col == 1 && line[0] == ':')
151 if (ch == CTRL('w') && col > 0) {
152 while (--col >= 0 && isspace(line[col]))
155 while (--col >= 0 && !isspace(line[col]))
156 if (col == 0 && line[0] == ':')
161 if (ch == killchar() && col > 0) {
170 if (isprint(ch) || ch == ' ') {
172 mvaddch(CMDLINE, col, ch);
176 if (col == 0 || (ch != '\r' && ch != '\n'))