MemoryInputStream.hpp

//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2018 Laurent Gomila (laurent@sfml-dev.org)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
//    you must not claim that you wrote the original software.
//    If you use this software in a product, an acknowledgment
//    in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
//    and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//

#ifndef SFML_MEMORYINPUTSTREAM_HPP
#define SFML_MEMORYINPUTSTREAM_HPP

// Headers
#include <SFML/Config.hpp>
#include <SFML/System/InputStream.hpp>
#include <SFML/System/Export.hpp>
#include <cstdlib>


namespace sf
{
class SFML_SYSTEM_API MemoryInputStream : public InputStream
{
public:

    MemoryInputStream();

    void open(const void* data, std::size_t sizeInBytes);

    virtual Int64 read(void* data, Int64 size);

    virtual Int64 seek(Int64 position);

    virtual Int64 tell();

    virtual Int64 getSize();

private:

    // Member data
    const char* m_data;   
    Int64       m_size;   
    Int64       m_offset; 
};

} // namespace sf


#endif // SFML_MEMORYINPUTSTREAM_HPP