iodevice.h

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/*
**  ClanLib SDK
**  Copyright (c) 1997-2005 The ClanLib Team
**
**  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.
**
**  Note: Some of the libraries ClanLib link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Magnus Norddahl
*/

#ifndef header_iodevice
#define header_iodevice

#if _MSC_VER > 1000
#pragma once
#endif

class CL_IODevice
{
public:
        enum SeekMode
        {
                seek_set,
                seek_cur,
                seek_end
        };

public:
        virtual ~CL_IODevice() { return; }

public:
        virtual int get_size() const { return -1; }
        
        virtual int get_position() const { return -1; }

public:
        virtual int send(const void *data, int len, bool send_all = true) = 0;

        virtual int receive(void *data, int len, bool receive_all = true) = 0;

        virtual int peek(void *data, int len) = 0;

        virtual bool seek(int position, SeekMode mode = seek_set) { return false; }

private:
};

#endif

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