pdf_flavors/pdfa_extension_schema

 * PDF/A extension schema:

 * Demonstrate the use of an XMP extension schema as defined in PDF/A-1

 *

 * Create a PDF/A document and use the "metadata" option of begin_document() to

 * supply an XMP file containing an XMP extension schema.

 *

 * Required software: PDFlib/PDFlib+PDI/PPS 7.0.3

 * Required data: XMP file

 */

package com.pdflib.cookbook.pdflib.pdf_flavors;

import com.pdflib.pdflib;

import com.pdflib.PDFlibException;

public class pdfa_extension_schema

{

    public static void main (String argv[])

    {

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

    String searchpath = "../input";

    String outfile = "pdfa_extension_schema.pdf";

    String title = "PDF/A Extension Schema";

    pdflib p = null;

    /* Required minimum PDFlib version */

    final double requiredversion = 703;

    final String requiredvstr = "7.0.3";

    String xmpfile = "machine_extension_schema_1.xmp";

    int font;

    try {

        p = new pdflib();

        p.set_parameter("SearchPath", searchpath);

        /* This means we must check return values of load_font() etc. */

        p.set_parameter("errorpolicy", "return");

        /* Check whether the required minimum PDFlib version is available */

        double major = p.get_value("major", 0);

        double minor = p.get_value("minor", 0);

        double revision = p.get_value("revision", 0);

        if (major*100 + minor*10 + revision < requiredversion)

            throw new Exception("Error: PDFlib " + requiredvstr +

                " or above is required");

        /* Start a PDF/A document with an XMP file supplied, containing an XMP

         * extension schema. The XMP metadata will be read from the file and

         * embedded in the document. PDFlib will merge several internally

         * generated entries into the user-supplied XMP, e.g. xmp:CreateDate.

         */

        if (p.begin_document(outfile,

            "pdfa=PDF/A-1b:2005 metadata={filename=" + xmpfile + "}") == -1)

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

        p.set_info("Creator", "PDFlib Cookbook");

        p.set_info("Title", title + " $Revision: 1.4 $");

        p.begin_page_ext(0, 0, "width=a4.height height=a4.width");

        /* Font embedding is required for PDF/A */

        font = p.load_font("LuciduxSans-Oblique", "unicode", "embedding");

        if (font == -1)

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

        p.setfont(font, 12);

        p.fit_textline("An XMP extension schema is read from an XMP file and " +

                 "the XMP metadata is embedded in the document.", 50, 400, "");

        p.end_page_ext("");

        p.end_document("");

        } catch (PDFlibException e) {

            System.err.print("PDFlib exception occurred:\n");

            System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() +

                ": " + e.get_errmsg() + "\n");

        } catch (Exception e) {

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

        } finally {

            if (p != null) {

                p.delete();

            }

        }

    }

}