* Copyright (c) 1980, 1992, 1993

/* $NetBSD: keyboard.c,v 1.26 2015/08/23 18:33:15 mrg 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. 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 1.26 2015/08/23 18:33:15 mrg Exp $");
#endif /* not lint */

#include <sys/types.h>

#include <ctype.h>
#include <signal.h>
#include <termios.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>

#include "systat.h"
#include "extern.h"

extern sig_atomic_t needsredraw;

void
keyboard(void)
{
int ch, rch, col;
char *line;
int i, linesz;
static char help[] = "help";
static char quit[] = "quit";

ch = 0; /* XXX gcc */
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();
for (;;) {
ch = getch();
if (!needsredraw)
break;
redraw();
}
if (ch == ERR) {
display(SIGALRM);
continue;
}
if (ch == KEY_RESIZE) {
redraw();
continue;
}
ch &= 0177;
rch = ch;
if (col == 0) {
switch(ch) {
case '\n':
case '\r':
case ' ':
clearerror();
display(0);
break;
case CTRL('l'):
clearerror();
wrefresh(curscr);
break;
case CTRL('g'):
status();
break;
case '?':
case 'H':
case 'h':
command(help);
move(CMDLINE, 0);
break;
case 'Q':
case 'q':
command(quit);
break;
case ':':
move(CMDLINE, 0);
clrtoeol();
addch(':');
col++;
break;
}
continue;
}
if (ch == '\b' || ch == '\177' || ch == erasechar()) {
if (col > 0)
col--;
goto doerase;
}
if (ch == CTRL('w') && col > 0) {
while (--col >= 0 &&
isspace((unsigned char)line[col]))
continue;
col++;
while (--col >= 0 &&
!isspace((unsigned char)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((unsigned char)line[i]);
command(line + 1);
}
/* NOTREACHED */
}