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::run_command(int argc, char** argv)
  42 {
  43     if(argv[0][0] == '#' || argv[0][0] == ';')
  44         return;
  45
  46     CmdSet::iterator it = commands.lower_bound(argv[0]);
  47     if( it != commands.end() &&
  48             it->first.compare(0, strlen(argv[0]), argv[0]) == 0 )
  49     {
  50         Cmd& c = it->second;
  51
  52         if(it->first != argv[0])
  53             output("%s\n", it->first.c_str());
  54
  55         if(argc-1 < c.min())
  56             output("Error, not enough arguments (%d) for command '%s' (try 'help')\n", argc-1, it->first.c_str() );
  57         else if(argc-1 > c.max())
  58             output("Error, too many arguments (%d) for command '%s' (try 'help')\n", argc-1, it->first.c_str() );
  59         else
  60             c.run(argc-1, argv+1);
  61     }
  62     else
  63         output("Unknown command: '%s' (try 'help')\n", argv[0]);
  64 }
  65
  66 void Engine::load_ini()
  67 {
  68     FILE *f = fopen("rattatechess.ini", "r");
  69     if(!f)
  70         return;
  71
  72     int argc = 0;
  73     char **argv;
  74
  75     while( (argv = fget_tokenized(f, &argc)) )
  76     {
  77         if(!argc || strlen(argv[0])==0)
  78         {
  79             free(argv);
  80             continue;
  81         }
  82         run_command(argc, argv);
  83         free(argv);
  84     }
  85
  86     fclose(f);
  87 }
  88
  89 void Engine::process_input()
  90 {
  91     int argc = 0;
  92     char **argv;
  93     Move mv;
  94
  95     if(search_gui)
  96         search_gui->wait_input();
  97     argv = get_tokenized(&argc);
  98
  99     if(!argv)
 100         exit(0);
 101
 102     if(!argc || strlen(argv[0])==0)
 103     {
 104         free(argv);
 105         return;
 106     }
 107
 108     /* is this a move? */
 109     mv = board.move_from_string(argv[0]);
 110
 111     if(mv == Move::Illegal())
 112         output("Illegal move: %s\n", argv[0]);
 113     else if(mv == Move::Ambiguous())
 114         output("Illegal move (ambiguous): %s\n", argv[0]);
 115     else if(mv == Move::None()) /* not a move */
 116         run_command(argc, argv);
 117     else /* a valid move */
 118     {
 119         if(!io_xboard)
 120             print_moves(&mv,1);
 121
 122         move(mv);
 123
 124         if(!io_xboard)
 125             print_board();
 126     }
 127
 128     free(argv);
 129 }