terminal.cc

神经网络和遗传算法组合应用

/*
  YAKS, a Khepera simulator including a separate GA and ANN 
  (Genetic Algoritm, Artificial Neural Net).
  Copyright (C) 2000  Johan Carlsson ([e-mail])
  
  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; either version 2
  of the License, or 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 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
#include "terminal.h"

/**
 * Constructor, creates a terminal with the default prompt "|YAKS >"
 */
Terminal::Terminal(){
  commands = NULL;
  prompt = strdup("|YAKS >");
}
/**
 * Deconstructor, deallocated all memory allocated.
 *
 */
Terminal::~Terminal(){
  CommandS *next;
  free(prompt);
  if(commands){
    while(commands->next!=NULL){
      next = commands->next;
      free(commands->command);
      free(commands->description);
      free(commands);
      commands = next;
    }
    free(commands->command);
    free(commands->description);
    free(commands);
  }
}

/**
 * Converts a string to upper case
 * @param str The string to be converted, directly modified.
 */
void Terminal::upCase(char *str){
  int i=0;
  while(str[i]!='\0'){
    str[i]=(char)toupper(str[i]);
    i++;
  }
}
/**
 * Checks all user added commands for a match and calls the function if a match is found.
 * @param com The string/command to search for
 */
void Terminal::runUserCommand(const char *com){
  CommandS *item;
  item = commands;
  if(item){
    while(item->next!=NULL){
      if(strcmp(com,item->command)==0)
	item->func();
      item = item->next;
    }
    if(strcmp(com,item->command)==0)
      item->func();
  }
}

/**
 * Checks all internal added commands for a match and calls the function if a match is found.
 * @param com The string/command to search for
 */
void Terminal::runInternalCommand(const char *com){
  if(strlen(com) == 1){
    switch(com[0]){
    case 'M': printMenu(); break;
    case 'P': 
      free(prompt);
      prompt = readline("New prompt >");
      break;
    }
  }
}

/**
 * Starts an interactive terminal which will run until user types exit.
 */
void Terminal::runTerminal(){

  char *commandLine;
  
  commandLine = readline(prompt);
  
  while(strcmp(commandLine,"exit")!=0){
    runInternalCommand(commandLine);
    runUserCommand(commandLine);
    add_history(commandLine);
    free(commandLine);
    commandLine = readline(prompt);
  }
  free(commandLine);
}

/**
 * Set the prompt used in terminal mode.
 * @param newPrompt The new prompt.
 */
void Terminal::setPrompt(const char *newPrompt){
  if(prompt)
    free(prompt);
  prompt = strdup(newPrompt);
}

/**
 * Prints all commands available in the terminal.
 */
void Terminal::printMenu(){
  CommandS *item;
  item = commands;
  while(item->next!=NULL){
    printf("%s - %s\n",item->command,item->description);
    item = item->next;
  }
  printf("%s - %s\n",item->command,item->description);
}

/**
 * Add a command to the terminal
 * @param str The string which is the command.
 * @param desc The description of the command.
 * @param f A pointer to a function that will be called when user types the command specified by \a str.
 */
void Terminal::addItem(const char* str,const char* desc,void (*f)(void)){
  CommandS *item;
  item = commands;
  if(commands!=NULL){
    while(item->next!=NULL)
      item=item->next;
    item->next = (CommandS*)malloc(sizeof(CommandS));
    item = item->next;
  }
  else{
    commands = (CommandS*)malloc(sizeof(CommandS));
    item = commands;
  }

  item->next=NULL;
  item->command = strdup(str);
  item->description = strdup(desc);
  item->func = f;
}