/* $NetBSD: hack.tty.c,v 1.16 2011/08/06 20:42:43 dholland 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 1.16 2011/08/06 20:42:43 dholland 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; static struct termios inittyb, curttyb; static void setctty(void); /* * 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(void) { 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(const char *s) { clearscreen(); endscreen(); 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(); } static void setctty(void) { if (tcsetattr(0, TCSADRAIN, &curttyb) < 0) perror("Hack (setctty)"); } void setftty(void) { 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(); } startscreen(); } /* fatal error */ /* VARARGS1 */ void error(const char *fmt, ...) { va_list ap; va_start(ap, fmt); if (settty_needed) settty(NULL); 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(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 sound_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 sound_bell(); } } void getret(void) { cgetret(""); } void cgetret(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 */ /* s = chars allowed besides space or return */ void xwaitforspace(const char *s) { int c; morc = 0; while ((c = readchar()) != '\n') { if (flags.cbreak) { if (c == ' ') break; if (s && strchr(s, c)) { morc = c; break; } sound_bell(); } } } char * parse(void) { 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(void) { 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(void) { settty("End of input?\n"); clearlocks(); exit(0); }
