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bsdgames/hack/hack.tty.c

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/* $NetBSD: hack.tty.c,v 1.12 2003/08/07 09:37:19 agc Exp $ */
/*-
* Copyright (c) 1988, 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[] = "@(#)hack.tty.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: hack.tty.c,v 1.12 2003/08/07 09:37:19 agc Exp $");
#endif
#endif /* not lint */
/*
* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
* Amsterdam
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the Stichting Centrum voor Wiskunde en
* Informatica, 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
* 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.
*/
/*
* Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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.
*/
/* hack.tty.c - version 1.0.3 */
/*
* With thanks to the people who sent code for SYSV - hpscdi!jon,
* arnold@ucsf-cgl, wcs@bo95b, cbcephus!pds and others.
*/
#include <termios.h>
#include <termcap.h>
#include "hack.h"
#include "extern.h"
/*
* Some systems may have getchar() return EOF for various reasons, and
* we should not quit before seeing at least NR_OF_EOFS consecutive EOFs.
*/
#ifndef BSD
#define NR_OF_EOFS 20
#endif /* BSD */
static char erase_char, kill_char;
static boolean settty_needed = FALSE;
struct termios inittyb, curttyb;
/*
* Get initial state of terminal, set ospeed (for termcap routines)
* and switch off tab expansion if necessary.
* Called by startup() in termcap.c and after returning from ! or ^Z
*/
void
gettty()
{
if (tcgetattr(0, &inittyb) < 0)
perror("Hack (gettty)");
curttyb = inittyb;
ospeed = cfgetospeed(&inittyb);
erase_char = inittyb.c_cc[VERASE];
kill_char = inittyb.c_cc[VKILL];
getioctls();
/* do not expand tabs - they might be needed inside a cm sequence */
if (curttyb.c_oflag & OXTABS) {
curttyb.c_oflag &= ~OXTABS;
setctty();
}
settty_needed = TRUE;
}
/* reset terminal to original state */
void
settty(s)
const char *s;
{
clear_screen();
end_screen();
if (s)
printf("%s", s);
(void) fflush(stdout);
if (tcsetattr(0, TCSADRAIN, &inittyb) < 0)
perror("Hack (settty)");
flags.echo = (inittyb.c_lflag & ECHO) ? ON : OFF;
flags.cbreak = (inittyb.c_lflag & ICANON) ? OFF : ON;
setioctls();
}
void
setctty()
{
if (tcsetattr(0, TCSADRAIN, &curttyb) < 0)
perror("Hack (setctty)");
}
void
setftty()
{
int change = 0;
flags.cbreak = ON;
flags.echo = OFF;
/* Should use (ECHO|CRMOD) here instead of ECHO */
if (curttyb.c_lflag & ECHO) {
curttyb.c_lflag &= ~ECHO;
change++;
}
if (curttyb.c_lflag & ICANON) {
curttyb.c_lflag &= ~ICANON;
/* be satisfied with one character; no timeout */
curttyb.c_cc[VMIN] = 1;
curttyb.c_cc[VTIME] = 0;
change++;
}
if (change) {
setctty();
}
start_screen();
}
/* fatal error */
/* VARARGS1 */
void
error(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (settty_needed)
settty((char *) 0);
vprintf(fmt, ap);
va_end(ap);
putchar('\n');
exit(1);
}
/*
* Read a line closed with '\n' into the array char bufp[BUFSZ].
* (The '\n' is not stored. The string is closed with a '\0'.)
* Reading can be interrupted by an escape ('\033') - now the
* resulting string is "\033".
*/
void
getlin(bufp)
char *bufp;
{
char *obufp = bufp;
int c;
flags.toplin = 2; /* nonempty, no --More-- required */
for (;;) {
(void) fflush(stdout);
if ((c = getchar()) == EOF) {
*bufp = 0;
return;
}
if (c == '\033') {
*obufp = c;
obufp[1] = 0;
return;
}
if (c == erase_char || c == '\b') {
if (bufp != obufp) {
bufp--;
putstr("\b \b"); /* putsym converts \b */
} else
bell();
} else if (c == '\n') {
*bufp = 0;
return;
} else if (' ' <= c && c < '\177') {
/*
* avoid isprint() - some people don't have it ' ' is
* not always a printing char
*/
*bufp = c;
bufp[1] = 0;
putstr(bufp);
if (bufp - obufp < BUFSZ - 1 && bufp - obufp < COLNO)
bufp++;
} else if (c == kill_char || c == '\177') { /* Robert Viduya */
/* this test last - @ might be the kill_char */
while (bufp != obufp) {
bufp--;
putstr("\b \b");
}
} else
bell();
}
}
void
getret()
{
cgetret("");
}
void
cgetret(s)
const char *s;
{
putsym('\n');
if (flags.standout)
standoutbeg();
putstr("Hit ");
putstr(flags.cbreak ? "space" : "return");
putstr(" to continue: ");
if (flags.standout)
standoutend();
xwaitforspace(s);
}
char morc; /* tell the outside world what char he used */
void
xwaitforspace(s)
const char *s; /* chars allowed besides space or return */
{
int c;
morc = 0;
while ((c = readchar()) != '\n') {
if (flags.cbreak) {
if (c == ' ')
break;
if (s && strchr(s, c)) {
morc = c;
break;
}
bell();
}
}
}
char *
parse()
{
static char inputline[COLNO];
int foo;
flags.move = 1;
if (!Invisible)
curs_on_u();
else
home();
while ((foo = readchar()) >= '0' && foo <= '9')
multi = 10 * multi + foo - '0';
if (multi) {
multi--;
save_cm = inputline;
}
inputline[0] = foo;
inputline[1] = 0;
if (foo == 'f' || foo == 'F') {
inputline[1] = getchar();
#ifdef QUEST
if (inputline[1] == foo)
inputline[2] = getchar();
else
#endif /* QUEST */
inputline[2] = 0;
}
if (foo == 'm' || foo == 'M') {
inputline[1] = getchar();
inputline[2] = 0;
}
clrlin();
return (inputline);
}
char
readchar()
{
int sym;
(void) fflush(stdout);
if ((sym = getchar()) == EOF)
#ifdef NR_OF_EOFS
{ /*
* Some SYSV systems seem to return EOFs for various reasons
* (?like when one hits break or for interrupted systemcalls?),
* and we must see several before we quit.
*/
int cnt = NR_OF_EOFS;
while (cnt--) {
clearerr(stdin); /* omit if clearerr is
* undefined */
if ((sym = getchar()) != EOF)
goto noteof;
}
end_of_input();
noteof: ;
}
#else
end_of_input();
#endif /* NR_OF_EOFS */
if (flags.toplin == 1)
flags.toplin = 2;
return ((char) sym);
}
void
end_of_input()
{
settty("End of input?\n");
clearlocks();
exit(0);
}
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