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stoc.c revision 1.6 
      1 /*	$NetBSD: stoc.c,v 1.6 2000/07/03 03:57:41 matt Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Ralph Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 #ifndef lint
     41 #if 0
     42 static char sccsid[] = "@(#)stoc.c	8.1 (Berkeley) 7/24/94";
     43 #else
     44 __RCSID("$NetBSD: stoc.c,v 1.6 2000/07/03 03:57:41 matt Exp $");
     45 #endif
     46 #endif /* not lint */
     47 
     48 #include <ctype.h>
     49 #include <stdlib.h>
     50 #include <string.h>
     51 #include "gomoku.h"
     52 
     53 const char	*letters	= "<ABCDEFGHJKLMNOPQRST>";
     54 
     55 struct mvstr {
     56 	int	m_code;
     57 	const char	*m_text;
     58 };
     59 static	const struct	mvstr	mv[] = {
     60 	{ RESIGN,	"resign" },
     61 	{ RESIGN,	"quit" },
     62 	{ SAVE,		"save" },
     63 	{ -1,		0 }
     64 };
     65 
     66 /*
     67  * Turn the spot number form of a move into the character form.
     68  */
     69 const char *
     70 stoc(s)
     71 	int s;
     72 {
     73 	static char buf[32];
     74 	int i;
     75 
     76 	for (i = 0; mv[i].m_code >= 0; i++)
     77 		if (s == mv[i].m_code)
     78 			return(mv[i].m_text);
     79 	sprintf(buf, "%c%d", letters[s % BSZ1], s / BSZ1);
     80 	return(buf);
     81 }
     82 
     83 /*
     84  * Turn the character form of a move into the spot number form.
     85  */
     86 int
     87 ctos(mp)
     88 	const char *mp;
     89 {
     90 	int i;
     91 
     92 	for (i = 0; mv[i].m_code >= 0; i++)
     93 		if (strcmp(mp, mv[i].m_text) == 0)
     94 			return(mv[i].m_code);
     95 	if (!isalpha(mp[0]))
     96 		return(ILLEGAL);
     97 	i = atoi(&mp[1]);
     98 	if (i < 1 || i > 19)
     99 		return(ILLEGAL);
    100 	return(PT(lton(mp[0]), i));
    101 }
    102 
    103 /*
    104  * Turn a letter into a number.
    105  */
    106 int
    107 lton(c)
    108 	int c;
    109 {
    110 	int i;
    111 
    112 	if (islower(c))
    113 		c = toupper(c);
    114 	for (i = 1; i <= BSZ && letters[i] != c; i++)
    115 		;
    116 	return(i);
    117 }
    118