interchange/document_metadata

package com.pdflib.cookbook.pcos.interchange;

import java.io.IOException;

import com.pdflib.pCOS;

import com.pdflib.pCOSException;

import com.pdflib.cookbook.pcos.pcos_cookbook_example;

/**

 * Retrieve the document's XMP meta data.

 * <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: document_metadata.java,v 1.5 2010/09/27 13:24:26 stm Exp $

 */

public class document_metadata 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 = "/Root/Metadata";

    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.pcos_get_string(doc, "filename"));

        String objtype = p.pcos_get_string(doc, "type:" + KEY);

        if (objtype.equals("stream")) {

            byte[] contents = p.pcos_get_stream(doc, "", KEY);

            if (contents != null && contents.length > 0) {

                try {

                    System.out.write(contents);

                }

                catch (IOException e) {

                    System.err.println("IOException occurred:");

                    System.err.println(e.getMessage());

                }

            }

            else {

                System.out.println("Not found");

            }

        }

        else {

            System.out.println("Not found");

        }

        p.close_document(doc);

    }

    public document_metadata(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[]) {

        document_metadata example = new document_metadata(argv,

            "Document XMP metadata", SEARCH_PATH,

            "$RCSfile: document_metadata.java,v $", "$Revision: 1.5 $");

        example.execute();

    }

}