/*

 * lftp - file transfer program

 *

 * Copyright (c) 1996-2012 by Alexander V. Lukyanov (lav@yars.free.net)

 *

 * 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 3 of the License, 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 for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef ALIAS_H

#define ALIAS_H

#include "xstring.h"

class Alias

{

   Alias *next;

   xstring_c alias;

   xstring_c value;

   static Alias *base;

   Alias(const char *alias,const char *value,Alias *next)

      : next(next), alias(alias), value(value) {}

public:

   static const char *Find(const char *alias);

   static void Add(const char *alias,const char *value);

   static void Del(const char *alias);

   static char *Format();

   friend char *command_generator(const char *text,int state);

};

class TouchedAlias

{

   xstring_c alias;

   TouchedAlias *next;

public:

   TouchedAlias(const char *a,TouchedAlias *n)

      : alias(a), next(n) {}

   static void FreeChain(TouchedAlias *chain)

   {

      while(chain)

	 delete replace_value(chain,chain->next);

   }

   static bool IsTouched(const char *a,TouchedAlias *chain)

   {

      while(chain)

      {

	 if(chain->alias.eq(a))

	    return true;

	 chain=chain->next;

      }

      return false;

   }

};

#endif//ALIAS_H