pCOS Cookbook

cookbook

interactive/named_destinations

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

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package com.pdflib.cookbook.pcos.interactive;

import com.pdflib.IpCOS;

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 3.x, PDFlib+PDI/PPS 7.x, TET 2.2,
 * PLOP 3.x) <br>
 * Required data: PDF document
 * 
 * @version $Id: named_destinations.java,v 1.10 2015/11/16 11:53:16 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(IpCOS p, int doc) throws Exception {

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

        int len = (int) p.pcos_get_number(doc, "length:" + KEY);
        System.out.println(len + " found");
        for (int i = 0; i < len; ++i) {
            int dest_page = (int) p.pcos_get_number(doc, KEY + "[" + i
                + "]/destpage");

            System.out.print(p.pcos_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.pcos_get_string(doc, "type:/Root/Dests").equals("dict")) {
            len = (int) p.pcos_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.pcos_get_string(doc, "/Root/Dests[" + i
                    + "].key"));
            }
        }
    }

    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: 1.10 $");
        example.execute();
    }
}