[reportlab-users] can reportlab combine PDFs and/or add a password to a PDF?

[George Kappel]

pdftk is limiting when you are trying to keep features like bookmarks 
working so if you can handle a little bit of java checkout iText.  This 
will run with java or gcj

Following is a snippet taken from the iText docs and altered to encrypt, 
compress and concat any # of pdf files while maintaining the integrity 
of bookmarks
.
.

import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;

import com.lowagie.text.Document;
import com.lowagie.text.pdf.PRAcroForm;
import com.lowagie.text.pdf.PdfCopy;
import com.lowagie.text.pdf.PdfImportedPage;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.pdf.SimpleBookmark;

/**
 * Tool that can be used to concatenate existing PDF files.
 */
public class pdf_concat {

    /**
     * This class can be used to concatenate existing PDF files.
     * (This was an example known as PdfCopy.java)
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        if (args.length < 4) {
            System.err.println("arguments: userpw ownerpw file1 [file2 
...] destfile");
        }
        else {
            //System.out.println("PdfCopy example");
            try {
                int pageOffset = 0;
                ArrayList master = new ArrayList();
                int f = 2;
                String outFile = args[args.length-1];
                Document document = null;
                PdfCopy  writer = null;
                while (f < args.length-1) {
                    // we create a reader for a certain document
                    PdfReader reader = new PdfReader(args[f]);
                    reader.consolidateNamedDestinations();
                    // we retrieve the total number of pages
                    int n = reader.getNumberOfPages();
                    List bookmarks = SimpleBookmark.getBookmark(reader);
                    if (bookmarks != null) {
                        if (pageOffset != 0)
                            SimpleBookmark.shiftPageNumbers(bookmarks, 
pageOffset, null);
                        master.addAll(bookmarks);
                    }
                    pageOffset += n;
                   
                    if (f == 2) {
                        // step 1: creation of a document-object
                        document = new 
Document(reader.getPageSizeWithRotation(1));
                        // step 2: we create a writer that listens to 
the document
                        writer = new PdfCopy(document, new 
FileOutputStream(outFile));
                        writer.setFullCompression();
                        writer.setEncryption(true, args[0], args[1], 
PdfWriter.AllowPrinting);
                        
writer.setViewerPreferences(PdfWriter.PageModeUseOutlines);
                        // step 3: we open the document
                        document.open();
                    }
                    // step 4: we add content
                    PdfImportedPage page;
                    for (int i = 0; i < n; ) {
                        ++i;
                        page = writer.getImportedPage(reader, i);
                        writer.addPage(page);
                    }
                    PRAcroForm form = reader.getAcroForm();
                    if (form != null)
                        writer.copyAcroForm(reader);
                    f++;
                }
                if (!master.isEmpty())
                    writer.setOutlines(master);
                // step 5: we close the document
                document.close();
            }
            catch(Exception e) {
                e.printStackTrace();
            }
        }
    }
}


Tim Roberts wrote:

> Mark Turansky wrote:

>   

>> I just installed ReportLab 2.0 and looked over the remarkably good

>> documentation.  I was able to generate a PDF containing several graphs

>> very easily.  I did not see two specific features in the

>> documentation, so I thought I'd ask the mailing list.

>>  

>> Is it possible to

>> a) secure the PDF with a password? 

>> b) open other PDFs and combine them into a single PDF?

>>     

>

> Allow me to point out that the excellent open source tool "pdftk" can

> perform both of these tasks, as well as many more.  Everyone who works

> with PDF files should have it in their toolbox.

>

>     http://www.accesspdf.com/pdftk/

>

>