libchess/debug.c

   1 /* vim:tw=78:ts=8:sw=4:set ft=c:  */
   2 /*
   3     Copyright (C) 2002-2015 Ben Kibbey <bjk@luxsci.net>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 */
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <stdarg.h>
  26
  27 #include "chess.h"
  28
  29 void write_debug_output(const char *filename, const char *format, ...)
  30 {
  31     FILE *fp = stderr;
  32     va_list ap;
  33     char *buf;
  34
  35     va_start(ap, format);
  36     vasprintf(&buf, format, ap);
  37     va_end(ap);
  38
  39     if (filename) {
  40         if ((fp = fopen(filename, "a")) == NULL)
  41             return;
  42     }
  43
  44     fprintf(fp, "%s", buf);
  45     fflush(fp);
  46
  47     if (filename)
  48         fclose(fp);
  49
  50     free(buf);
  51     return;
  52 }
  53
  54 char *debug_board(BOARD b)
  55 {
  56     static char buf[129];
  57     char *p = buf;
  58     int row, col;
  59
  60     for (row = 0; row < 8; row++) {
  61         for (col = 0; col < 8; col++) {
  62             *p++ = (b[row][col].enpassant) ? 'x' : b[row][col].icon;
  63
  64             if (col < 7)
  65                 *p++ = ' ';
  66         }
  67
  68         *p++ = '\n';
  69         *p = 0;
  70     }
  71
  72     *p = 0;
  73     return buf;
  74 }
  75
  76 void dump_board(const char *file, BOARD b)
  77 {
  78     write_debug_output(file, "%s", debug_board(b));
  79 }