Initial commit of GNU Go v3.8.

[sgk-go] / sgf / sgfgen.c

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
* This is GNU Go, a Go program. Contact gnugo@gnu.org, or see       *
* http://www.gnu.org/software/gnugo/ for more information.          *
*                                                                   *
* Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,   *
* 2008 and 2009 by the Free Software Foundation.                    *
*                                                                   *
* This program is free software; you can redistribute it and/or     *
* modify it under the terms of the GNU General Public License as    *
* published by the Free Software Foundation - version 3 or          *
* (at your option) any later version.                               *
*                                                                   *
* This program is distributed in the hope that it will be useful,   *
* but WITHOUT ANY WARRANTY; without even the implied warranty of    *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the     *
* GNU General Public License in file COPYING for more details.      *
*                                                                   *
* You should have received a copy of the GNU General Public         *
* License along with this program; if not, write to the Free        *
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,       *
* Boston, MA 02111, USA.                                            *
\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
* A little program to convert the SGF Spec into something usable in a
* parser- basically, the two letters moved into a 'short'
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_LINE 128

static short str2short(char *str);

/*
* combine two characters into a short.
*/

static short
str2short(char *str)
{
 return (str[0] | str[1] << 8);
}

int 
main(void)
{
 char instring[MAX_LINE];
 char sgf_tag[MAX_LINE];
 char comment[MAX_LINE];
 int i;

 while (fgets(instring, MAX_LINE, stdin)) {
   i = strlen(instring) - 1;
     
   /* Remove trailing newline and spaces */
   while (i >= 0 
          && (instring[i] == ' ' || instring[i] == 10))
     instring[i--] = 0;
     
   /* Blank lines stay blank lines */
   if (strcmp(instring, "") == 0) {
     fprintf(stdout, "\n");
     continue;
   }
     
   sscanf(instring, "%4s %75s", sgf_tag, comment);
   strncpy(sgf_tag, instring, 4);
   if (strlen(instring) > 4) 
     strncpy(comment, instring+4, MAX_LINE-4);
   else
     strcpy(comment, "");

   /* outdated and modified notations. */
   /* just shift everything over */
   if (sgf_tag[0] == '*' || sgf_tag[0] == '!') {
     sgf_tag[0] = sgf_tag[1];
     sgf_tag[1] = sgf_tag[2];
     sgf_tag[2] = sgf_tag[3];
   }
     
   /* If its not a real tag, just take it as a comment. */
   if (sgf_tag[0] < 'A' || sgf_tag[0] > 'Z') {
     fprintf(stdout, "/* %s */\n", instring);
     continue;
   }
   else {
     /* otherwise, write the tag and value to the file */
     if (strlen(comment))
       fprintf(stdout, "     /* %s */\n", comment);
     fprintf(stdout, "#define SGF%s %5d\n", sgf_tag, str2short(sgf_tag));
   }
 }
 
 /* Needs 0 exit status or else make fails. */
 return EXIT_SUCCESS;
}