src/stream/ZStreamR_Boundary.h

/*  @(#) $Id: ZStreamR_Boundary.h,v 1.8 2006/04/27 03:19:32 agreen Exp $ */

/* ------------------------------------------------------------
Copyright (c) 2001 Andrew Green and Learning in Motion, Inc.
http://www.zoolib.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------ */

#ifndef __ZStreamR_Boundary__
#define __ZStreamR_Boundary__ 1
#include "zconfig.h"

#include "ZStreamer.h"

#include <string>

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamR_Boundary


class ZStreamR_Boundary : public ZStreamR
        {
public:
        ZStreamR_Boundary(const std::string& iBoundary, const ZStreamR& iStreamSource);
        ZStreamR_Boundary(const void* iBoundary, size_t iBoundarySize, const ZStreamR& iStreamSource);
        ~ZStreamR_Boundary();

// From ZStreamR
        virtual void Imp_Read(void* iDest, size_t iCount, size_t* oCountRead);
        virtual size_t Imp_CountReadable();

// Our protocol
        bool HitBoundary() const;
        void Reset();

protected:
        void Internal_Init();

        const ZStreamR& fStreamSource;
        std::string fBoundary;
        size_t fDistance[256];
        uint8* fBuffer;
        size_t fDataStart;
        size_t fDataEnd;
        bool fHitBoundary;
        };

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamerR_Boundary


class ZStreamerR_Boundary : public ZStreamerR
        {
public:
        ZStreamerR_Boundary(const std::string& iBoundary, ZRef<ZStreamerR> iStreamerSource);

        ZStreamerR_Boundary(const void* iBoundary, size_t iBoundarySize,
                ZRef<ZStreamerR> iStreamerSource);

        virtual ~ZStreamerR_Boundary();

// From ZStreamerR
        virtual const ZStreamR& GetStreamR();

protected:
        ZRef<ZStreamerR> fStreamerSource;
        ZStreamR_Boundary fStream;
        };

// Alternate template-based definition:
// typedef ZStreamerRFT<ZStreamR_Boundary> ZStreamerR_Boundary;

// =================================================================================================

#endif // __ZStreamR_Boundary__

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