source: NonGTP/Xerces/xercesc/internal/BinMemOutputStream.hpp @ 188

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003 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.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    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
 *    software without prior written permission. For written
 *    permission, please contact apache\@apache.org.
 *
 * 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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 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation, and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/*
 * $Id: BinMemOutputStream.hpp,v 1.2 2004/02/16 04:02:34 neilg Exp $
 * $Log: BinMemOutputStream.hpp,v $
 * Revision 1.2  2004/02/16 04:02:34  neilg
 * fix for bug 26936
 *
 * Revision 1.1  2003/12/16 16:56:51  peiyongz
 * BinMemOutputStream
 *
 *
 */

#ifndef BINMEMOUTPUTSTREAM_HEADER_GUARD_
#define BINMEMOUTPUTSTREAM_HEADER_GUARD_

#include <xercesc/framework/BinOutputStream.hpp>
#include <xercesc/util/PlatformUtils.hpp>

XERCES_CPP_NAMESPACE_BEGIN

class XMLUTIL_EXPORT BinMemOutputStream : public BinOutputStream 
{
public :
    // -----------------------------------------------------------------------
    //  Constructors and Destructor
    // -----------------------------------------------------------------------

    ~BinMemOutputStream();

    BinMemOutputStream
    (
         int                     initCapacity = 1023
       , MemoryManager* const    manager      = XMLPlatformUtils::fgMemoryManager
    );

    // -----------------------------------------------------------------------
    //  Implementation of the output stream interface
    // -----------------------------------------------------------------------
    virtual unsigned int curPos() const;

    virtual void writeBytes
    (
      const XMLByte*     const      toGo
    , const unsigned int            maxToWrite
    ) ;

    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------
    const XMLByte* getRawBuffer() const;

    unsigned int getSize() const;
    void reset();

private :
    // -----------------------------------------------------------------------
    //  Unimplemented methods.
    // -----------------------------------------------------------------------
    BinMemOutputStream(const BinMemOutputStream&);
    BinMemOutputStream& operator=(const BinMemOutputStream&);

    // -----------------------------------------------------------------------
    //  Private helpers
    // -----------------------------------------------------------------------
    void insureCapacity(const unsigned int extraNeeded);

    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fDataBuf
    //      The pointer to the buffer data. Its grown as needed. Its always
    //      one larger than fCapacity, to leave room for the null terminator.
    //
    //  fIndex
    //      The current index into the buffer, as characters are appended
    //      to it. If its zero, then the buffer is empty.
    //
    //  fCapacity
    //      The current capacity of the buffer. Its actually always one
    //      larger, to leave room for the null terminator.
    //
    // -----------------------------------------------------------------------
    MemoryManager*  fMemoryManager;
    XMLByte*        fDataBuf;
    unsigned int    fIndex;
    unsigned int    fCapacity;

};


XERCES_CPP_NAMESPACE_END

#endif