move.c

   1 #include <ctype.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 #include "move.h"
   7
   8
   9 /* The S_OFFBOARD margin is not addressable by coordinates. */
  10
  11 static char asdf[] = "abcdefghjklmnopqrstuvwxyz";
  12
  13 char *
  14 coord2str(coord_t c)
  15 {
  16         char b[4];
  17         if (is_pass(c)) {
  18                 return strdup("pass");
  19         } else if (is_resign(c)) {
  20                 return strdup("resign");
  21         } else {
  22                 /* Some GTP servers are broken and won't grok lowercase coords */
  23                 snprintf(b, 4, "%c%d", toupper(asdf[coord_x(c) - 1]), coord_y(c));
  24                 return strdup(b);
  25         }
  26 }
  27
  28 /* No sanity checking */
  29 coord_t *
  30 str2coord(char *str, int size)
  31 {
  32         if (!strcasecmp(str, "pass")) {
  33                 return coord_pass();
  34         } else if (!strcasecmp(str, "resign")) {
  35                 return coord_resign();
  36         } else {
  37                 char xc = tolower(str[0]);
  38                 return coord_init(xc - 'a' - (xc > 'i') + 1, atoi(str + 1), size);
  39         }
  40 }