sprint/container/buffer.h

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/******************************************************************************
*   sprint::buffer
*
*   Copyright (C) 2005-2011  Paolo Medici <www.pmx.it>
*
*  This library is free software; you can redistribute it and/or
*  modify it under the terms of the GNU Lesser General Public
*  License as published by the Free Software Foundation; either
*  version 2.1 of the License, or (at your option) any later version.
*
*  This library 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
*  Lesser General Public License for more details.
*
*  You should have received a copy of the GNU Lesser General Public
*  License along with this library; if not, write to the Free Software
*  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*
*******************************************************************************/

#ifndef _SPRINT_BUFFER_H
#define _SPRINT_BUFFER_H

namespace sprint {

class const_buffer {
      const char *m_ptr;
      int m_size;
      public:
      const_buffer(const char*ptr, int size) : m_ptr(ptr), m_size(size) { }
      
      inline const char *data() const { return m_ptr; }
      inline int lenght() const { return m_size; }
      
      };

struct mutable_buffer {
      char *m_ptr;
      int m_size;

      public:
      mutable_buffer(char *ptr, int size) : m_ptr(ptr), m_size(size) { }
      
      inline operator const_buffer() const { return const_buffer(m_ptr, m_size); }

      inline char *data() const { return m_ptr; }
      inline int lenght() const { return m_size; }
      };

template<class T>
inline mutable_buffer buffer(T *ptr, int size) { return mutable_buffer(reinterpret_cast<char*>(ptr), size * sizeof(T)); }

template<class T>
inline mutable_buffer buffer(T * ptr) { return mutable_buffer(reinterpret_cast<char*>(ptr), sizeof(T)); }

template<class T>
inline const_buffer buffer(const T *ptr, int size) { return const_buffer(reinterpret_cast<const char*>(ptr), size * sizeof(T)); }

template<class T>
inline const_buffer buffer(const T * ptr) { return const_buffer(reinterpret_cast<const char*>(ptr), sizeof(T)); }

inline const_buffer buffer(const std::string & s) { return const_buffer(reinterpret_cast<const char*>(s.data()), s.length()); }

} // namespace sprint

#endif