interactive/named_destinations

package com.pdflib.cookbook.pcos.interactive;

import com.pdflib.pCOS;

import com.pdflib.pCOSException;

import com.pdflib.cookbook.pcos.pcos_cookbook_example;

/**

 * Print the names of all destinations which are defined in the document.

 * <p>

 * Required software: pCOS interface 3 (pCOS 2.x, PDFlib 7.x, TET 2.2,

 * PLOP 3.x)<br>

 * Required data: PDF document

 *

 * @version  $Id: named_destinations.java,v 1.6 2007/09/20 09:02:01 stm Exp $

 */

public class named_destinations extends pcos_cookbook_example {

    /* This is where the data files are. Adjust as necessary. */

    private final static String SEARCH_PATH = "../input";

    private final static String KEY = "names/Dests";

    public void example_code(pCOS p, String filename) throws pCOSException,

            Exception {

       

        /* Open the PDF document */

        int doc = p.open_document(filename, "");

        if (doc == -1)

            throw new Exception("Error: " + p.get_errmsg());

        System.out.println("File name: " + p.get_string(doc, "filename"));

        int len = (int) p.get_number(doc, "length:" + KEY);

        System.out.println(len + " found");

        for (int i = 0; i < len; ++i) {

            int dest_page = (int) p.get_number(doc,

                KEY + "[" + i + "]/destpage");

            System.out.print(p.get_string(doc, KEY + "[" + i + "].key"));

            if (dest_page != -1) {

                System.out.print(": page " + dest_page);

            }

            System.out.println();

        }

        /**

         * Very old PDF 1.1 documents may contain named destinations in

         * /Root/Dests instead of names/Dests (which maps to /Root/Names/Dests).

         * Since pCOS does not provide the convenient "destpage" pseudo entry

         * for these, we dump only the destination names. This flavor is very

         * rare, and is present only in very old PDFs. It is nevertheless

         * checked here for completeness.

         */

        if (p.get_string(doc, "type:/Root/Dests").equals("dict")) {

                        len = (int) p.get_number(doc, "length:/Root/Dests");

            System.out.println();

                        System.out.println(

                            len + " old-style (PDF 1.1) destinations found:");

                        for (int i = 0; i < len; ++i) {

                                System.out.println(

                                    p.get_string(doc, "/Root/Dests[" + i + "].key"));

                    }

                }

        p.close_document(doc);

    }

    public named_destinations(String[] argv, String readable_name,

        String search_path, String full_rcs_file_name, String revision) {

        super(argv, readable_name, search_path, full_rcs_file_name, revision);

    }

    public static void main(String argv[]) {

        named_destinations example = new named_destinations(argv,

            "Named destinations", SEARCH_PATH,

            "$RCSfile: named_destinations.java,v $", "$Revision: 1.6 $");

        example.execute();

    }

}