Splitting a PDF with iText

Question

Hi,
I'm trying to split a pdf into multiply pdf files. One pdf perbookmark.
Can anyone give any pointers?
I've got the bookmarks (via the outline) (they are bookmarks within a bookmark, thats why I go two levels in). But I've just got lost trying to find the pages, and write them out.
Thanks
Mike
import java.util.*;
public class PDFSplit {
    public static void main( String argv[] ) throws Throwable {
     PdfReader reader = new PdfReader("test.pdf");
     PdfDictionary dic = reader.getCatalog();
     PdfObject o = dic.get( PdfDictionary.OUTLINES );
     PdfDictionary outline = (PdfDictionary)reader.getPdfObject( o );
     PdfDictionary first = (PdfDictionary)reader.getPdfObject( outline.get( PdfName.FIRST ) );
     PdfDictionary ff = (PdfDictionary)reader.getPdfObject( first.get( PdfName.FIRST ) );
     while( ff != null ) {
         String title = ff.get( PdfName.TITLE ).toString();
         System.out.println( title );       
         PdfObject next = ff.get( PdfName.NEXT );
         if( next == null )
          ff = null;
         else
          ff = (PdfDictionary)reader.getPdfObject( next );
}

Answer 1

Tis OK, worked it out, but I do feel as if a little to much magic is keeping it together....
(very ugly code follows)
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
import java.io.*;
import java.util.*;
public class PDFSplit {
    public static void main( String argv[] ) throws Throwable {
     PdfReader reader = new PdfReader("test.pdf");
     PdfDictionary dic = reader.getCatalog();
reader.consolidateNamedDestinations();
     PdfObject o = dic.get( PdfDictionary.OUTLINES );
     PdfDictionary outline = (PdfDictionary)reader.getPdfObject( o );
     PdfDictionary first = (PdfDictionary)reader.getPdfObject( outline.get( PdfName.FIRST ) );
     PdfDictionary ff = (PdfDictionary)reader.getPdfObject( first.get( PdfName.FIRST ) );
     int size = reader.getNumberOfPages();
     int start = 1;
     String title = ff.get( PdfName.TITLE ).toString();
     PdfObject next = ff.get( PdfName.NEXT );
     if( next == null ) ff = null;
     else ff = (PdfDictionary)reader.getPdfObject( next );
     while( ff != null ) {
         PdfArray a = (PdfArray)reader.getPdfObject( ff.get( PdfName.DEST ) );
         PdfDictionary page = (PdfDictionary)reader.getPdfObject( (PdfObject)a.getArrayList().get(0) );
         int end = size;
         for( int i = 1; i<size;i++ ) {
          if( page.equals( reader.getPageN(i) ) ) {
              end = i;
              break;
         System.out.println( end );
         Document document = new Document( reader.getPageSizeWithRotation( 1 ) );
         PdfCopy  writer = new PdfCopy( document, new FileOutputStream( title + ".pdf" ) );
         document.open();
         for( int i = start; i<end; i++ ) {
          System.out.println( i );
          PdfImportedPage cpage = writer.getImportedPage( reader, i );
          writer.addPage( cpage );          
         PRAcroForm form = reader.getAcroForm();
         if (form != null)
          writer.copyAcroForm(reader);
         document.close();
         title = ff.get( PdfName.TITLE ).toString();
         start = end;
         next = ff.get( PdfName.NEXT );
         if( next == null )
          ff = null;
         else
          ff = (PdfDictionary)reader.getPdfObject( next );
     Document document = new Document( reader.getPageSizeWithRotation( 1 ) );
     PdfCopy  writer = new PdfCopy( document, new FileOutputStream( title + ".pdf" ) );
     document.open();
     for( int i = start; i<=size; i++ ) {
         System.out.println( i );
         PdfImportedPage cpage = writer.getImportedPage( reader, i );
         writer.addPage( cpage );          
     PRAcroForm form = reader.getAcroForm();
     if (form != null)
         writer.copyAcroForm(reader);
     document.close();
}