src/stream/ZStream_Tee.h

/*  @(#) $Id: ZStream_Tee.h,v 1.3 2006/04/10 20:44:21 agreen Exp $ */

/* ------------------------------------------------------------
Copyright (c) 2004 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 __ZStream_Tee__
#define __ZStream_Tee__ 1

#include "zconfig.h"

#include "ZStreamer.h"

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamR_Tee


class ZStreamR_Tee : public ZStreamR
        {
public:
        ZStreamR_Tee(const ZStreamR& iStreamR, const ZStreamW& iStreamW);
        ~ZStreamR_Tee();

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

protected:
        const ZStreamR& fStreamR;
        const ZStreamW& fStreamW;
        };

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamerR_Tee


class ZStreamerR_Tee : public ZStreamerR
        {
public:
        ZStreamerR_Tee(ZRef<ZStreamerR> iStreamerR, ZRef<ZStreamerW> iStreamerW);
        virtual ~ZStreamerR_Tee();

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

protected:
        ZRef<ZStreamerR> fStreamerR;
        ZRef<ZStreamerW> fStreamerW;
        ZStreamR_Tee fStream;
        };

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamW_Tee


class ZStreamW_Tee : public ZStreamW
        {
public:
        ZStreamW_Tee(const ZStreamW& iStreamSink1, const ZStreamW& iStreamSink2);
        ~ZStreamW_Tee();

// From ZStreamW
        virtual void Imp_Write(const void* iSource, size_t iCount, size_t* oCountWritten);
        virtual void Imp_Flush();

protected:
        const ZStreamW& fStreamSink1;
        const ZStreamW& fStreamSink2;
        };

// =================================================================================================
#pragma mark -
#pragma mark * ZStreamerW_Tee


class ZStreamerW_Tee : public ZStreamerW
        {
public:
        ZStreamerW_Tee(ZRef<ZStreamerW> iStreamerSink1, ZRef<ZStreamerW> iStreamerSink2);
        virtual ~ZStreamerW_Tee();

// From ZStreamerW
        virtual const ZStreamW& GetStreamW();

protected:
        ZRef<ZStreamerW> fStreamerSink1;
        ZRef<ZStreamerW> fStreamerSink2;
        ZStreamW_Tee fStream;
        };

#endif // __ZStream_Tee__

---