src/internal/MemBufInputSource.hpp

/*
 * The Apache Software License, Version 1.1
 * 
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
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 *    distribution.
 * 
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 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 * 
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
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 * 5. Products derived from this software may not be called "Apache",
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * ====================================================================
 * 
 * This software consists of voluntary contributions made by many
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 * originally based on software copyright (c) 1999, International
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/**
 * $Log$
 * Revision 1.1  1999/11/09 01:08:10  twl
 * Initial revision
 *
 * Revision 1.2  1999/11/08 20:44:43  rahul
 * Swat for adding in Product name and CVS comment log variable.
 *
 */


#if !defined(MEMBUFINPUTSOURCE_HPP)
#define MEMBUFINPUTSOURCE_HPP

#include <sax/InputSource.hpp>
#include <util/BinMemInputStream.hpp>


class XMLPARSER_EXPORT MemBufInputSource : public InputSource
{
public :
    // -----------------------------------------------------------------------
    //  Constructors and Destructor
    // -----------------------------------------------------------------------
    MemBufInputSource
    (
        const   XMLByte* const  srcDocBytes
        , const unsigned int    byteCount
        , const XMLCh* const    bufId
        , const bool            adoptBuffer = false
    );

    MemBufInputSource
    (
        const   XMLByte* const  srcDocBytes
        , const unsigned int    byteCount
        , const char* const     bufId
        , const bool            adoptBuffer = false
    );

    ~MemBufInputSource();


    // -----------------------------------------------------------------------
    //  Virtual input source interface
    // -----------------------------------------------------------------------
    BinInputStream* makeStream() const;


    // -----------------------------------------------------------------------
    //  Setter methods
    // -----------------------------------------------------------------------
    void setCopyBufToStream(const bool newState);


private :
    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fAdopted
    //      Indicates whether the buffer is adopted or not. If so, then it
    //      is destroyed when the input source is destroyed.
    //
    //  fByteCount
    //      The size of the source document.
    //
    //  fCopyBufToStream
    //      This defaults to true (the safe option), which causes it to
    //      give a copy of the buffer to any streams it creates. If you set
    //      it to false, it will allow the streams to just reference the
    //      buffer (in which case this input source must stay alive as long
    //      as the buffer is in use by the stream.)
    //
    //  fSrcBytes
    //      The source memory buffer that is being spooled from. Whether it
    //      belongs to the this input source or not is controlled by the
    //      fAdopted flag.
    // -----------------------------------------------------------------------
    bool            fAdopted;
    unsigned int    fByteCount;
    bool            fCopyBufToStream;
    const XMLByte*  fSrcBytes;
};


inline void MemBufInputSource::setCopyBufToStream(const bool newState)
{
    fCopyBufToStream = newState;
}

#endif