Title info. form PPT Doc.

["Natarajan.T" <na...@crimsonlogic.co.in>]

FYI,
 
See the below attached code.(Convert PPT to text).
The problem is I want to display the Title using the this below
functions
 
summaryinformation =
(SummaryInformation)PropertySetFactory.create(event.getStream());
                  String a = summaryinformation.getTitle();
                        System.out.println("Title :"+a);
 
The above functions are not working, so how I handle this one? Advice
me.
 
Pls look my code.
 
 
 
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.hpsf.PropertySet;
import org.apache.poi.hpsf.PropertySetFactory;
import org.apache.poi.poifs.eventfilesystem.POIFSReader;
import org.apache.poi.poifs.eventfilesystem.POIFSReaderEvent;
import org.apache.poi.poifs.eventfilesystem.POIFSReaderListener;
import org.apache.poi.util.LittleEndian;
 
import org.apache.poi.hpsf.*;
 
/**
 * Class description
 *
 *  
 */
public class PPTConverterImpl extends JavaDocumentConverter {
 
    static final String lineSeparator =
System.getProperty("line.separator");
 
    /**
     * Extract the text from a number of presentations.
     */
    public boolean extractText(InputStream  reader, BufferedWriter
writer) throws IOException{
                  System.out.println("Title :");
            POIFSReader r = new POIFSReader();
 
            /* Register a listener for *all* documents. */
            MyPOIFSReaderListener listener = new
MyPOIFSReaderListener(writer);
            r.registerListener(listener);
            r.read(reader);
            //if no exception was trown, consider that the conversion
was successful  
            return true;
    } 
 
    class MyPOIFSReaderListener implements POIFSReaderListener{
      private BufferedWriter writer = null;
      
      public MyPOIFSReaderListener(BufferedWriter writer){
            this.writer = writer;
      }
 
      public void processPOIFSReaderEvent(POIFSReaderEvent event) {
             org.apache.poi.hpsf.PropertySet ps = null;
                   SummaryInformation summaryinformation = null;
 
            try{
                  
                  org.apache.poi.poifs.filesystem.DocumentInputStream
dis=null;
                                          
                  if(!event.getName().equalsIgnoreCase("PowerPoint
Document"))
                        return;
                  
                  
                  dis=event.getStream();
 
                        summaryinformation =
(SummaryInformation)PropertySetFactory.create(event.getStream());
                  String a = summaryinformation.getTitle();
                        System.out.println("Title :"+a);
                   
                        byte btoWrite[]= new byte[12];
                  dis.read(btoWrite);
                  
                  btoWrite = new byte[dis.available()];
 
                        System.out.println(btoWrite);
                  dis.read(btoWrite, 0, dis.available());
                  
                  StringBuffer buff = new StringBuffer("");
                  //String x = "";
                  for(int i=0; i<btoWrite.length-20; i++){
 
                        long type=LittleEndian.getUShort(btoWrite,i+2);
                        long size=LittleEndian.getUInt(btoWrite,i+4);
                        if (type==4008){
                              
                              int offset = i+4+1;
                              int length = (int)size+3;
                              int end = offset + length;
                              
                              byte[] textBytes = new byte[length]; 
                              
                              for (int j = offset; j < end; j++) {
                                    byte b = btoWrite[j];
                                           buff = buff.append((char)b);
                                          writer.write((char) b);
                              }
                                    
 
                              if(i < (end -1))
                                    i = end -1;
      
                        } 
 
                        } 
                  
                  }catch (Exception e){
                  /*String msg = "Cannot index ppt file: \n";
                if(getLogger().isErrorEnabled())
                  getLogger().error(msg + e);*/
            }     
      }     
    }
}