io.cpp

   1 /***************************************************************************
   2                           main.cpp  -  description
   3                              -------------------
   4     begin                : Dom Oct 9 2005
   5     copyright            : (C) 2005 by Maurizio Monge
   6     email                : monge@linuz.sns.it
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #include <stdarg.h>
  19 #include <string.h>
  20 #include "engine.h"
  21 #include "commands.h"
  22
  23 void Engine::output(const char* fmt, ...)
  24 {
  25     char buf[4096];
  26     int len;
  27     va_list va;
  28     va_start( va, fmt );
  29     len = MIN(vsnprintf( buf, 4096, fmt, va), 4096);
  30     va_end( va );
  31
  32     fwrite(buf, 1, len, stdout);
  33     if(log)
  34     {
  35         fwrite(buf, 1, len, log);
  36         fflush(log);
  37     }
  38 }
  39
  40 void Engine::process_input()
  41 {
  42     int argc = 0;
  43     char **argv;
  44     int retv = 0;
  45     Move mv;
  46
  47     argv = get_tokenized(&argc);
  48
  49     if(!argv)
  50         exit(0);
  51
  52     if(!argc || strlen(argv[0])==0)
  53     {
  54         free(argv);
  55         return;
  56     }
  57
  58     /* is this a move? */
  59     retv = parse_move(&mv, argv[0]);
  60
  61     /* not a move */
  62     if(retv == 0)
  63     {
  64         CmdSet::iterator it = commands.lower_bound(argv[0]);
  65         if( it != commands.end() &&
  66                 it->first.compare(0, strlen(argv[0]), argv[0]) == 0 )
  67         {
  68             Cmd& c = it->second;
  69
  70             if(it->first != argv[0])
  71                 output("%s\n", it->first.c_str());
  72
  73             if(argc-1 < c.min())
  74                 output("Error, not enough arguments (%d) for command '%s' (try 'help')\n", argc-1, it->first.c_str() );
  75             else if(argc-1 > c.max())
  76                 output("Error, too many arguments (%d) for command '%s' (try 'help')\n", argc-1, it->first.c_str() );
  77             else
  78                 c.run(argc-1, argv+1);
  79         }
  80         else
  81             output("Illegal command: '%s' (try 'help')\n", argv[0]);
  82     }
  83     /* a legal valid move */
  84     else if(retv == 1)
  85     {
  86         if(!io_xboard)
  87             print_moves(&mv,1);
  88
  89         move(mv);
  90
  91         if(!io_xboard)
  92             print_board();
  93     }
  94     /* a move that is illegal or ambiguous */
  95     else if(retv == 2)
  96     {
  97
  98     }
  99
 100     free(argv);
 101 }