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teach.c revision 1.21.6.1 
      1 /*	$NetBSD: teach.c,v 1.21.6.1 2012/10/30 18:58:18 yamt Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\
     35  The Regents of the University of California.  All rights reserved.");
     36 #endif				/* not lint */
     37 
     38 #ifndef lint
     39 #if 0
     40 static char sccsid[] = "@(#)teach.c	8.1 (Berkeley) 5/31/93";
     41 #else
     42 __RCSID("$NetBSD: teach.c,v 1.21.6.1 2012/10/30 18:58:18 yamt Exp $");
     43 #endif
     44 #endif				/* not lint */
     45 
     46 #include "back.h"
     47 #include "tutor.h"
     48 
     49 static const char *const helpm[] = {
     50 	"\nEnter a space or newline to roll, or",
     51 	"     b   to display the board",
     52 	"     d   to double",
     53 	"     q   to quit\n",
     54 	0
     55 };
     56 
     57 static const char *const contin[] = {
     58 	"",
     59 	0
     60 };
     61 
     62 int
     63 main(int argc __unused, char *argv[])
     64 {
     65 	int     i;
     66 	struct move mmstore, *mm;
     67 
     68 	/* revoke setgid privileges */
     69 	setgid(getgid());
     70 
     71 	signal(SIGINT, getout);
     72 	if (tcgetattr(0, &old) == -1)	/* get old tty mode */
     73 		errexit("teachgammon(gtty)");
     74 	noech = old;
     75 	noech.c_lflag &= ~ECHO;
     76 	raw = noech;
     77 	raw.c_lflag &= ~ICANON;	/* set up modes */
     78 	ospeed = cfgetospeed(&old);	/* for termlib */
     79 	tflag = getcaps(getenv("TERM"));
     80 
     81 	/* need this now beceause getarg() may try to load a game */
     82 	mm = &mmstore;
     83 	move_init(mm);
     84 	while (*++argv != 0)
     85 		getarg(mm, &argv);
     86 	if (tflag) {
     87 		noech.c_oflag &= ~(ONLCR | OXTABS);
     88 		raw.c_oflag &= ~(ONLCR | OXTABS);
     89 		clear();
     90 	}
     91 	wrtext(hello);
     92 	wrtext(list);
     93 	i = wrtext(contin);
     94 	if (i == 0)
     95 		i = 2;
     96 	init();
     97 	while (i)
     98 		switch (i) {
     99 		case 1:
    100 			leave();
    101 
    102 		case 2:
    103 			if ((i = wrtext(intro1)) != 0)
    104 				break;
    105 			wrboard();
    106 			if ((i = wrtext(intro2)) != 0)
    107 				break;
    108 
    109 		case 3:
    110 			if ((i = wrtext(moves)) != 0)
    111 				break;
    112 
    113 		case 4:
    114 			if ((i = wrtext(removepiece)) != 0)
    115 				break;
    116 
    117 		case 5:
    118 			if ((i = wrtext(hits)) != 0)
    119 				break;
    120 
    121 		case 6:
    122 			if ((i = wrtext(endgame)) != 0)
    123 				break;
    124 
    125 		case 7:
    126 			if ((i = wrtext(doubl)) != 0)
    127 				break;
    128 
    129 		case 8:
    130 			if ((i = wrtext(stragy)) != 0)
    131 				break;
    132 
    133 		case 9:
    134 			if ((i = wrtext(prog)) != 0)
    135 				break;
    136 
    137 		case 10:
    138 			if ((i = wrtext(lastch)) != 0)
    139 				break;
    140 		}
    141 	tutor(mm);
    142 	/* NOTREACHED */
    143 	return (0);
    144 }
    145 
    146 void
    147 leave(void)
    148 {
    149 	if (tflag)
    150 		clear();
    151 	else
    152 		writec('\n');
    153 	fixtty(&old);
    154 	execl(EXEC, "backgammon", "-n", args[0]?args:0, (char *) 0);
    155 	writel("Help! Backgammon program is missing\007!!\n");
    156 	exit(1);
    157 }
    158