initial import of 386bsd-0.1 sources

1 files changed, 338 insertions, 0 deletions

diff --git a/hack/hack.tty.c b/hack/hack.tty.c
new file mode 100644
index 00000000..68fefc4e
--- /dev/null
+++ b/hack/hack.tty.c
@@ -0,0 +1,338 @@
+/*-
+ * Copyright (c) 1988 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)hack.tty.c	5.3 (Berkeley) 5/13/91";
+#endif /* not lint */
+
+/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
+/* 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	"hack.h"
+#include	<stdio.h>
+
+/*
+ * The distinctions here are not BSD - rest but rather USG - rest, as
+ * BSD still has the old sgttyb structure, but SYSV has termio. Thus:
+ */
+#ifdef BSD
+#define	V7
+#else
+#define USG
+#endif BSD
+
+/*
+ * 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
+
+
+#ifdef USG
+
+#include	<termio.h>
+#define termstruct	termio
+#define kill_sym	c_cc[VKILL]
+#define erase_sym	c_cc[VERASE]
+#define EXTABS		TAB3
+#define tabflgs		c_oflag
+#define echoflgs	c_lflag
+#define cbrkflgs	c_lflag
+#define CBRKMASK	ICANON
+#define CBRKON		! /* reverse condition */
+#define OSPEED(x)	((x).c_cflag & CBAUD)
+#define GTTY(x)		(ioctl(0, TCGETA, x))
+#define STTY(x)		(ioctl(0, TCSETA, x))	/* TCSETAF? TCSETAW? */
+
+#else	/* V7 */
+
+#include	<sgtty.h>
+#define termstruct	sgttyb
+#define	kill_sym	sg_kill
+#define	erase_sym	sg_erase
+#define EXTABS		XTABS
+#define tabflgs		sg_flags
+#define echoflgs	sg_flags
+#define cbrkflgs	sg_flags
+#define CBRKMASK	CBREAK
+#define CBRKON		/* empty */
+#define OSPEED(x)	(x).sg_ospeed
+#define GTTY(x)		(gtty(0, x))
+#define STTY(x)		(stty(0, x))
+
+#endif USG
+
+extern short ospeed;
+static char erase_char, kill_char;
+static boolean settty_needed = FALSE;
+struct termstruct 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
+ */
+gettty(){
+	if(GTTY(&inittyb) < 0)
+		perror("Hack (gettty)");
+	curttyb = inittyb;
+	ospeed = OSPEED(inittyb);
+	erase_char = inittyb.erase_sym;
+	kill_char = inittyb.kill_sym;
+	getioctls();
+
+	/* do not expand tabs - they might be needed inside a cm sequence */
+	if(curttyb.tabflgs & EXTABS) {
+		curttyb.tabflgs &= ~EXTABS;
+		setctty();
+	}
+	settty_needed = TRUE;
+}
+
+/* reset terminal to original state */
+settty(s) char *s; {
+	clear_screen();
+	end_screen();
+	if(s) printf(s);
+	(void) fflush(stdout);
+	if(STTY(&inittyb) < 0)
+		perror("Hack (settty)");
+	flags.echo = (inittyb.echoflgs & ECHO) ? ON : OFF;
+	flags.cbreak = (CBRKON(inittyb.cbrkflgs & CBRKMASK)) ? ON : OFF;
+	setioctls();
+}
+
+setctty(){
+	if(STTY(&curttyb) < 0)
+		perror("Hack (setctty)");
+}
+
+
+setftty(){
+register int ef = 0;			/* desired value of flags & ECHO */
+register int cf = CBRKON(CBRKMASK);	/* desired value of flags & CBREAK */
+register int change = 0;
+	flags.cbreak = ON;
+	flags.echo = OFF;
+	/* Should use (ECHO|CRMOD) here instead of ECHO */
+	if((curttyb.echoflgs & ECHO) != ef){
+		curttyb.echoflgs &= ~ECHO;
+/*		curttyb.echoflgs |= ef;					*/
+		change++;
+	}
+	if((curttyb.cbrkflgs & CBRKMASK) != cf){
+		curttyb.cbrkflgs &= ~CBRKMASK;
+		curttyb.cbrkflgs |= cf;
+#ifdef USG
+		/* be satisfied with one character; no timeout */
+		curttyb.c_cc[VMIN] = 1;		/* was VEOF */
+		curttyb.c_cc[VTIME] = 0;	/* was VEOL */
+#endif USG
+		change++;
+	}
+	if(change){
+		setctty();
+	}
+	start_screen();
+}
+
+
+/* fatal error */
+/*VARARGS1*/
+error(s,x,y) char *s; {
+	if(settty_needed)
+		settty((char *) 0);
+	printf(s,x,y);
+	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".
+ */
+getlin(bufp)
+register char *bufp;
+{
+	register char *obufp = bufp;
+	register 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();
+	}
+}
+
+getret() {
+	cgetret("");
+}
+
+cgetret(s)
+register 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 */
+
+xwaitforspace(s)
+register char *s;	/* chars allowed besides space or return */
+{
+register int c;
+
+	morc = 0;
+
+	while((c = readchar()) != '\n') {
+	    if(flags.cbreak) {
+		if(c == ' ') break;
+		if(s && index(s,c)) {
+			morc = c;
+			break;
+		}
+		bell();
+	    }
+	}
+}
+
+char *
+parse()
+{
+	static char inputline[COLNO];
+	register 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() {
+	register 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.
+	   */
+		register 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);
+}
+
+end_of_input()
+{
+	settty("End of input?\n");
+	clearlocks();
+	exit(0);
+}