streambuf.hpp

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#ifndef __JOIN_STREAMBUF_HPP__
#define __JOIN_STREAMBUF_HPP__
 
// C++.
#include <iostream>
#include <memory>
 
namespace join
{
    class StreambufDecorator : public std::streambuf
    {
    public:
        StreambufDecorator (std::streambuf* streambuf, bool own = false)
        : _innerbuf (streambuf),
          _own (own)
        {
        }
 
        StreambufDecorator (const StreambufDecorator& other) = delete;
 
        StreambufDecorator& operator= (const StreambufDecorator& other) = delete;
 
        StreambufDecorator (StreambufDecorator&& other)
        : std::streambuf (std::move (other)),
          _innerbuf (other._innerbuf),
          _own (other._own)
        {
            other._innerbuf = nullptr;
            other._own = false;
        }
 
        StreambufDecorator& operator= (StreambufDecorator&& other)
        {
            std::streambuf::operator= (std::move (other));
            _innerbuf = other._innerbuf;
            _own = other._own;
            other._innerbuf = nullptr;
            other._own = false;
            return *this;
        }
 
        virtual ~StreambufDecorator ()
        {
            if (_own && _innerbuf)
            {
                delete (_innerbuf);
            }
        }
 
    protected:
        std::streambuf* _innerbuf;
 
        bool _own = false;
    };
}
 
#endif