NetBSD/usr.bin/systat/keyboard.c

156 lines
4.1 KiB
C

/* $NetBSD: keyboard.c,v 1.12 2000/07/05 11:03:22 ad Exp $ */
/*-
* Copyright (c) 1980, 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: keyboard.c,v 1.12 2000/07/05 11:03:22 ad Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <ctype.h>
#include <curses.h>
#include <signal.h>
#include <termios.h>
#include <stdlib.h>
#include "systat.h"
#include "extern.h"
int
keyboard(void)
{
char ch, rch, *line;
int i, linesz;
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGALRM);
linesz = COLS - 2; /* XXX does not get updated on SIGWINCH */
if ((line = malloc(linesz)) == NULL) {
error("malloc failed");
die(0);
}
for (;;) {
col = 0;
move(CMDLINE, 0);
while (col == 0 || (ch != '\r' && ch != '\n')) {
refresh();
ch = getch() & 0177;
if (ch == 0177 && ferror(stdin)) {
clearerr(stdin);
continue;
}
rch = ch;
if (col == 0) {
switch(ch) {
case '\n':
case '\r':
case ' ':
display(0);
break;
case CTRL('l'):
sigprocmask(SIG_BLOCK, &set, NULL);
wrefresh(curscr);
sigprocmask(SIG_UNBLOCK, &set, NULL);
break;
case CTRL('g'):
sigprocmask(SIG_BLOCK, &set, NULL);
status();
sigprocmask(SIG_UNBLOCK, &set, NULL);
break;
case '?':
case 'H':
case 'h':
command("help");
move(CMDLINE, 0);
break;
case 'Q':
command("quit");
break;
case ':':
move(CMDLINE, 0);
clrtoeol();
addch(':');
col++;
break;
}
continue;
}
if (ch == erasechar() && col > 0) {
if (col == 1)
continue;
col--;
goto doerase;
}
if (ch == CTRL('w') && col > 0) {
while (--col >= 0 && isspace(line[col]));
col++;
while (--col >= 0 && !isspace(line[col]))
if (col == 0)
break;
col++;
goto doerase;
}
if (ch == killchar() && col > 0) {
col = 1;
doerase:
move(CMDLINE, col);
clrtoeol();
continue;
}
if (isprint(rch) || rch == ' ') {
if (col < linesz) {
line[col] = rch;
mvaddch(CMDLINE, col, rch);
col++;
}
}
}
line[col] = '\0';
/* pass commands as lowercase */
for (i = 1; i < col ; i++)
line[i] = tolower(line[i]);
command(line + 1);
}
/* NOTREACHED */
}