stoc.c revision 1.8 
1/*	$NetBSD: stoc.c,v 1.8 2004/11/05 21:30:32 dsl 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. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)stoc.c	8.1 (Berkeley) 7/24/94";
39#else
40__RCSID("$NetBSD: stoc.c,v 1.8 2004/11/05 21:30:32 dsl Exp $");
41#endif
42#endif /* not lint */
43
44#include <ctype.h>
45#include <stdlib.h>
46#include <string.h>
47#include "gomoku.h"
48
49const char	*letters	= "<ABCDEFGHJKLMNOPQRST>";
50
51struct mvstr {
52	int	m_code;
53	const char	*m_text;
54};
55static	const struct	mvstr	mv[] = {
56	{ RESIGN,	"resign" },
57	{ RESIGN,	"quit" },
58	{ SAVE,		"save" },
59	{ -1,		0 }
60};
61
62/*
63 * Turn the spot number form of a move into the character form.
64 */
65const char *
66stoc(s)
67	int s;
68{
69	static char buf[32];
70	int i;
71
72	for (i = 0; mv[i].m_code >= 0; i++)
73		if (s == mv[i].m_code)
74			return(mv[i].m_text);
75	sprintf(buf, "%c%d", letters[s % BSZ1], s / BSZ1);
76	return(buf);
77}
78
79/*
80 * Turn the character form of a move into the spot number form.
81 */
82int
83ctos(mp)
84	const char *mp;
85{
86	int i;
87
88	for (i = 0; mv[i].m_code >= 0; i++)
89		if (strcmp(mp, mv[i].m_text) == 0)
90			return(mv[i].m_code);
91	if (!isalpha((unsigned char)mp[0]))
92		return(ILLEGAL);
93	i = atoi(&mp[1]);
94	if (i < 1 || i > 19)
95		return(ILLEGAL);
96	return(PT(lton(mp[0]), i));
97}
98
99/*
100 * Turn a letter into a number.
101 */
102int
103lton(c)
104	int c;
105{
106	int i;
107
108	if (islower(c))
109		c = toupper(c);
110	for (i = 1; i <= BSZ && letters[i] != c; i++)
111		;
112	return(i);
113}
114