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// -*- c++ -*-
//
// $Id: secstring.h 2719 2009-08-20 01:30:25Z rafi $
//
// Copyright (C) 2008, 2009 Rafael Ostertag
//
// This file is part of YAPET.
//
// YAPET 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.
//
// YAPET 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
// YAPET. If not, see <http://www.gnu.org/licenses/>.
//
#ifndef _SECSTRING_H
#define _SECSTRING_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_MEMORY
# include <memory>
#endif
#ifdef HAVE_STRING
# include <string>
#endif
/**
* @file
*
* @brief A string class with memory clearing allocator.
*
* Holds the string class with a memory clearing allocator.
*/
namespace YAPET {
namespace UI {
/**
* @brief Memory clearing allocator.
*
* This template implements a \c deallocate method which zero'es out the
* memory released.
*/
template <class T>
class secallocator: public std::allocator<T> {
public:
void deallocate (typename std::allocator<T>::pointer p,
typename std::allocator<T>::size_type n) {
memset (p, '0', n*sizeof (std::allocator<T>::value_type) );
std::allocator<T>::deallocate (p, n);
}
};
/**
* @brief String class using the \c secallocator allocator.
*
* This string class uses the \c secallocator allocator in order to clear
* the memory occupied by the string.
*/
typedef std::basic_string<char, std::char_traits<char>, secallocator<char> > secstring;
}
}
#endif // _SECSTRING_H
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