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 #include "search_gui.h"
  23
  24 void Engine::output(const char* fmt, ...)
  25 {
  26     char buf[4096];
  27     int len;
  28     va_list va;
  29     va_start( va, fmt );
  30     len = MIN(vsnprintf( buf, 4096, fmt, va), 4096);
  31     va_end( va );
  32
  33     fwrite(buf, 1, len, stdout);
  34     if(log)
  35     {
  36         fwrite(buf, 1, len, log);
  37         fflush(log);
  38     }
  39 }
  40
  41 void Engine::process_input()
  42 {
  43     int argc = 0;
  44     char **argv;
  45     int retv = 0;
  46     Move mv;
  47
  48     if(search_gui)
  49         search_gui->wait_input();
  50     argv = get_tokenized(&argc);
  51
  52     if(!argv)
  53         exit(0);
  54
  55     if(!argc || strlen(argv[0])==0)
  56     {
  57         free(argv);
  58         return;
  59     }
  60
  61     /* is this a move? */
  62     retv = parse_move(&mv, argv[0]);
  63
  64     /* not a move */
  65     if(retv == 0)
  66     {
  67         CmdSet::iterator it = commands.lower_bound(argv[0]);
  68         if( it != commands.end() &&
  69                 it->first.compare(0, strlen(argv[0]), argv[0]) == 0 )
  70         {
  71             Cmd& c = it->second;
  72
  73             if(it->first != argv[0])
  74                 output("%s\n", it->first.c_str());
  75
  76             if(argc-1 < c.min())
  77                 output("Error, not enough arguments (%d) for command '%s' (try 'help')\n", argc-1, it->first.c_str() );
  78             else if(argc-1 > c.max())
  79                 output("Error, too many arguments (%d) for command '%s' (try 'help')\n", argc-1, it->first.c_str() );
  80             else
  81                 c.run(argc-1, argv+1);
  82         }
  83         else
  84             output("Illegal command: '%s' (try 'help')\n", argv[0]);
  85     }
  86     /* a legal valid move */
  87     else if(retv == 1)
  88     {
  89         if(!io_xboard)
  90             print_moves(&mv,1);
  91
  92         move(mv);
  93
  94         if(!io_xboard)
  95             print_board();
  96     }
  97     /* a move that is illegal or ambiguous */
  98     else if(retv == 2)
  99     {
 100
 101     }
 102
 103     free(argv);
 104 }