/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 * 

 *      http://www.apache.org/licenses/LICENSE-2.0

 * 

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

/*

 * $Id: BinMemOutputStream.hpp 568078 2007-08-21 11:43:25Z amassari $

 */

#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