NullStreams.h

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/*
 * Copyright (c) 2005 Palmsource, Inc.
 * 
 * This software is licensed as described in the file LICENSE, which
 * you should have received as part of this distribution. The terms
 * are also available at http://www.openbinder.org/license.html.
 * 
 * This software consists of voluntary contributions made by many
 * individuals. For the exact contribution history, see the revision
 * history and logs, available at http://www.openbinder.org
 */

#ifndef _SUPPORT_NULLSTREAMS_H
#define _SUPPORT_NULLSTREAMS_H

#include <support/ByteStream.h>
#include <support/SupportDefs.h>
#include <support/ITextStream.h>

#if _SUPPORTS_NAMESPACE
namespace palmos {
namespace support {
#endif

class BNullStream : public BnByteOutput, public BnByteInput
{
public:
    BNullStream();
    
    virtual SValue Inspect(const sptr<IBinder>& caller, const SValue &which, uint32_t flags = 0);
    virtual ssize_t WriteV(const struct iovec *vector, ssize_t count, uint32_t flags = 0);
    virtual status_t Sync();
    virtual ssize_t ReadV(const struct iovec * /*vector*/, ssize_t /*count*/, uint32_t flags = 0);

protected:
    virtual ~BNullStream();

private:
    BNullStream(const BNullStream&);
    BNullStream& operator=(const BNullStream&);
};

class BNullTextOutput : public ITextOutput
{
public:
    BNullTextOutput();
    
    virtual status_t                Print(  const char *debugText,
                                            ssize_t len = -1);
    
    virtual void                    MoveIndent( int32_t delta);
    

    virtual status_t                LogV(   const log_info& info,
                                            const iovec *vector,
                                            ssize_t count,
                                            uint32_t flags = 0);

    virtual void                    Flush();
    virtual status_t                Sync();

protected:
    virtual ~BNullTextOutput();

private:
    BNullTextOutput(const BNullTextOutput&);
    BNullTextOutput& operator=(const BNullTextOutput&);
};

#if _SUPPORTS_NAMESPACE
} } // namespace palmos::support
#endif

#endif // _SUPPORT_NULLSTREAMS_H

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