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stoc.c revision 1.1 
      1 /*
      2  * Copyright (c) 1994
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * This code is derived from software contributed to Berkeley by
      6  * Ralph Campbell.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  */
     36 
     37 #ifndef lint
     38 static char sccsid[] = "@(#)stoc.c	8.1 (Berkeley) 7/24/94";
     39 #endif /* not lint */
     40 
     41 #include "gomoku.h"
     42 #include <ctype.h>
     43 
     44 char	*letters	= "<ABCDEFGHJKLMNOPQRST>";
     45 
     46 struct mvstr {
     47 	int	m_code;
     48 	char	*m_text;
     49 };
     50 static	struct	mvstr	mv[] = {
     51 	RESIGN,		"resign",
     52 	RESIGN,		"quit",
     53 	SAVE,		"save",
     54 	-1,		0
     55 };
     56 
     57 /*
     58  * Turn the spot number form of a move into the character form.
     59  */
     60 char *
     61 stoc(s)
     62 	int s;
     63 {
     64 	static char buf[32];
     65 	register int i;
     66 
     67 	for (i = 0; mv[i].m_code >= 0; i++)
     68 		if (s == mv[i].m_code)
     69 			return(mv[i].m_text);
     70 	sprintf(buf, "%c%d", letters[s % BSZ1], s / BSZ1);
     71 	return(buf);
     72 }
     73 
     74 /*
     75  * Turn the character form of a move into the spot number form.
     76  */
     77 ctos(mp)
     78 	char *mp;
     79 {
     80 	register int i;
     81 
     82 	for (i = 0; mv[i].m_code >= 0; i++)
     83 		if (strcmp(mp, mv[i].m_text) == 0)
     84 			return(mv[i].m_code);
     85 	if (!isalpha(mp[0]))
     86 		return(ILLEGAL);
     87 	i = atoi(&mp[1]);
     88 	if (i < 1 || i > 19)
     89 		return(ILLEGAL);
     90 	return(PT(lton(mp[0]), i));
     91 }
     92 
     93 /*
     94  * Turn a letter into a number.
     95  */
     96 lton(c)
     97 	int c;
     98 {
     99 	register int i;
    100 
    101 	if (islower(c))
    102 		c = toupper(c);
    103 	for (i = 1; i <= BSZ && letters[i] != c; i++)
    104 		;
    105 	return(i);
    106 }
    107