gomoku/stoc.c

   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 }