/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 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",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * 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: LocalFileFormatTarget.hpp,v 1.4 2003/01/24 20:20:22 tng Exp $
 * $Log: LocalFileFormatTarget.hpp,v $
 * Revision 1.4  2003/01/24 20:20:22  tng
 * Add method flush to XMLFormatTarget
 *
 * Revision 1.3  2002/11/27 18:09:25  tng
 * [Bug 13447] Performance: Using LocalFileFormatTarget with DOMWriter is very slow.
 *
 * Revision 1.2  2002/11/04 15:00:21  tng
 * C++ Namespace Support.
 *
 * Revision 1.1  2002/06/19 21:59:26  peiyongz
 * DOM3:DOMSave Interface support: LocalFileFormatTarget
 *
 *
 */

#ifndef LocalFileFormatTarget_HEADER_GUARD_
#define LocalFileFormatTarget_HEADER_GUARD_

#include <xercesc/framework/XMLFormatter.hpp>

XERCES_CPP_NAMESPACE_BEGIN

class XMLPARSER_EXPORT LocalFileFormatTarget : public XMLFormatTarget {
public:

    /** @name constructors and destructor */
    //@{
    LocalFileFormatTarget(const XMLCh* const);

    LocalFileFormatTarget(const char* const);

    ~LocalFileFormatTarget();
    //@}

    // -----------------------------------------------------------------------
    //  Implementations of the format target interface
    // -----------------------------------------------------------------------
    virtual void writeChars(const XMLByte* const toWrite
                          , const unsigned int   count
                          , XMLFormatter* const  formatter);

    virtual void flush();

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

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

    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fSource
    //      The source file that we represent. The FileHandle type is defined
    //      per platform.
    //
    //  fDataBuf
    //      The pointer to the buffer data. 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.
    // -----------------------------------------------------------------------
    FileHandle      fSource;
    XMLByte*        fDataBuf;
    unsigned int    fIndex;
    unsigned int    fCapacity;

};


XERCES_CPP_NAMESPACE_END

#endif