File: tstring.h

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/*
 * Copyright (c) 1996 Tommaso Cucinotta, Alessandro Evangelista, Luigi Rizzo
 * All rights reserved.
 *
 *    Dip. di Ingegneria dell'Informazione, Universita of Pisa,
 *    via Diotisalvi 2 -- 56126 Pisa.
 *    email: simulpic@iet.unipi.it
 * 	
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by
 *	Tommaso Cucinotta, Alessandro Evangelista and Luigi Rizzo
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <string.h>

class TString {

   private:
      char* ptr;
   public:

      TString(char* src = 0) :
         ptr(strdup(src)) {}

      ~TString() {
         delete ptr;
         }

      operator const char* () const {
         return ptr;
         }

      TString& operator=(const TString& s) {
         if (this != &s) {
            delete ptr;
            ptr=strdup(s.ptr);
            }
         return *this;
         }

   };