D:/Uni/8.Semester/InfoVis/Demo/source/XMLParser/XmlStream.h

// http://www.codeproject.com/cpp/stlxmlparser.asp

#if !defined(XmlStream_H)
#define XmlStream_H

#include "XmlParser.h"
#include "XmlNotify.h"

#include <string>
#include <iostream>
using namespace std;



// XmlStream
//
// Purpose: stores a string that contain start,end tag delimited value


class XmlStream :
        public string
{
        XmlNotify *                     _subscriber;    // notification subscriber
public:

        XmlStream () :

                string (),
                _subscriber(NULL)

        {}

        virtual ~XmlStream ()
        { 
                release(); 
        }

        // release resources
        bool create ()
        {
                return true;
        }

        bool create ( char * buffer, long len )
        {
                if ( buffer && len > 0 )
                {
                        assign( buffer, len );
                        return true;
                }
                else
                        return false;
        }

        void release ()
        {
                erase( begin(), end() );
        }

        // notify methods
        void foundNode          ( string & name, string & attributes );
        void foundElement       ( string & name, string & value, string & attributes );

        void startElement       ( string & name, string & value, string & attributes );
        void endElement         ( string & name, string & value, string & attributes );

        // save/load stream
        bool save               ( char * buffer );
        bool load               ( char * buffer );

        // parse the current buffer
        bool parse                      ();
        bool parse                      ( char * buffer, long parseLength );
        bool parseNodes         ( XmlParser & parser, char * buffer, long parseLength );

        // get/set subscriber
        bool hasSubscriber ()
        {
                if ( _subscriber )
                        return true;
                else
                        return false;
        }

        XmlNotify * getSubscriber ()
        {
                return _subscriber;
        }

        void setSubscriber ( XmlNotify & set )
        {
                _subscriber = &set;
        }


        // get ref to tag stream
        XmlStream & getTagStream ()
        { return *this; }


        // get string ref
        string & str()
        { return (string &) *this; }
};



#endif

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