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streamsax2parser.hpp

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#if !defined(_STREAMSAX2PARSER_HPP)
#define _STREAMSAX2PARSER_HPP
//============================================================================= 
//
// XDFLengine library
//
//----------------------------------------------------------------------------- 
//  STREAMSAX2PARSER.HPP
//----------------------------------------------------------------------------- 
//_____________________________________________________________________________
//
//  Copyright (C) 2003 Guillaume Baurand. All Rights Reserved.
//
//  This file is part of the XDFLengine project.
//
//  The XDFLengine is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
//  USA.
//
//  For more information, 
//      contact  : guillaume@baurand.net 
//      or visit : http://xdflengine.sourceforge.net
//
//============================================================================= 

// Xerces
#   include "xercesc/util/XercesDefs.hpp"   
#   include "xercesc/util/BinMemInputStream.hpp"    
#   include "xercesc/sax/InputSource.hpp"
#   include "xercesc/sax2/Attributes.hpp"
#   include "xercesc/sax2/ContentHandler.hpp"
#   include "xercesc/sax/ErrorHandler.hpp"
#   include "xercesc/sax2/XMLReaderFactory.hpp"
#   include "xercesc/sax2/SAX2XMLReader.hpp"
#   include "flow/buffers/filebuffer.hpp"

#   include "config/commonincs.hpp"
#   include "flow/xmlstreamconsumer.hpp"


XERCES_CPP_NAMESPACE_USE;

BEGIN_XDFLENGINE_NS


class StreamInputSource;

//============================================================================= 
//  CLASS PROGRESSIVEINPUTSTREAM
//----------------------------------------------------------------------------- 
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class XDFLENGINE_EXPORT ProgressiveInputStream: public BinInputStream 
{

private:
        unsigned int            m_uiVirtualPosition;
        StreamInputSource*      m_pStreamInputSource;

public:

        //_____________________________________________________________________
        //  PROGRESSIVEINPUTSTREAM 
        //---------------------------------------------------------------------
        ProgressiveInputStream(StreamInputSource* p_pStreamInputSource);

        //_____________________________________________________________________
        //  PROGRESSIVEINPUTSTREAM 
        //---------------------------------------------------------------------
        ~ProgressiveInputStream();

        //_____________________________________________________________________
        //  CURPOS 
        //---------------------------------------------------------------------
        unsigned int curPos() const;

        //_____________________________________________________________________
        //  READBYTES 
        //---------------------------------------------------------------------
        unsigned int readBytes( XMLByte* const toFill, const unsigned int maxToRead);
};
//-----------------------------------------------------------------------------
//============================================================================= 


//============================================================================= 
//  CLASS STREAMINPUTSOURCE
//----------------------------------------------------------------------------- 
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class XDFLENGINE_EXPORT StreamInputSource: public InputSource ,public XMLStreamConsumer
{


private:

        char*           m_pszDataBuf;
        unsigned int    m_uiBeginIndex;
        unsigned int    m_uiEndIndex;
        unsigned int    m_uiBufSize;
        bool            m_fComplete;
        XMLCh *         m_pxchEncoding;
        //FileBuffer*       OUTF;


public:



    //  constructor and destructor  

        //_____________________________________________________________________
        //  STREAMINPUTSOURCE 
        //---------------------------------------------------------------------
        StreamInputSource();

        //_____________________________________________________________________
        //  STREAMINPUTSOURCE 
        //---------------------------------------------------------------------
        ~StreamInputSource();

    // Data buffer management

        //_____________________________________________________________________
        //  SETENCODING 
        //---------------------------------------------------------------------
        void setEncoding(const char* m_pszEncoding);

        //_____________________________________________________________________
        //  WRITEDATA 
        //---------------------------------------------------------------------
        void writeData( const char* p_pszData, unsigned int p_uiDataLen);

        //_____________________________________________________________________
        //  READDATA
        //---------------------------------------------------------------------
        unsigned int readData( char* const p_pszToFill, const unsigned int p_uiMaxToRead);

        //_____________________________________________________________________
        //  FLUSHDATA
        //---------------------------------------------------------------------
        void flushData();

        //_____________________________________________________________________
        //  AVAILABLE
        //---------------------------------------------------------------------
        unsigned int available();

    // INPUTSOURCE  const 

        //_____________________________________________________________________
        //  STREAMSAX2PARSER
        //---------------------------------------------------------------------
        const XMLCh * getEncoding () const;

        //_____________________________________________________________________
        //  STREAMSAX2PARSER
        //---------------------------------------------------------------------
        BinInputStream* makeStream() const;


        void setComplete();


};
//-----------------------------------------------------------------------------
//============================================================================= 








//============================================================================= 
//  CLASS STREAMSAX2PARSER
//----------------------------------------------------------------------------- 
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class StreamSAX2Parser : public XMLStreamConsumer
{

private:
        bool                m_fParseStarted;
        StreamInputSource   m_StreamInputSource;
        XMLPScanToken       m_ScanToken;
        SAX2XMLReader*      m_pSAX2XMLReader;

        ContentHandler*     m_pContentHandler;
        ErrorHandler*       m_pErrorHandler;

    
public:

    // CONSTRUCTOR & DESTRUCTOR

        //_____________________________________________________________________
        //  STREAMSAX2PARSER
        //---------------------------------------------------------------------
        StreamSAX2Parser(ContentHandler* p_pContentHandler, ErrorHandler* p_pErrorHandler);

        //_____________________________________________________________________
        //  ~STREAMSAX2PARSER
        //---------------------------------------------------------------------
        ~StreamSAX2Parser();

    // STREAM OPERATORS

        //_____________________________________________________________________
        //  WRITEDATA
        //---------------------------------------------------------------------
        void writeData( const char* p_pszData, unsigned int p_uiDataLen);

        //_____________________________________________________________________
        //  COMMITSTREAM
        //---------------------------------------------------------------------
        bool commitStream(bool fFinal = false);


};
//-----------------------------------------------------------------------------
//============================================================================= 

END_XDFLENGINE_NS

#endif

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