pdfa/pdfa_extension_schema_with_type

<?php

/* $Id: pdfa_extension_schema_with_type.php,v 1.3 2012/05/03 14:00:37 stm Exp $

* PDF/A extension schema with type:

* Demonstrate the use of a complex 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 a complex XMP extension schema which requires a

* custom type definition.

*

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

* Required data: XMP file

*/

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

$searchpath = dirname(dirname(dirname(__FILE__)))."/input";

$outfile = "";

$title = "PDF/A Extension Schema with Type";

/* Required minimum PDFlib version */

$requiredversion = 703;

$requiredvstr = "7.0.3";

$xmpfile = "machine_extension_schema_2.xmp";

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");

    $p->set_parameter("textformat", "utf8");

   

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

    $major = $p->get_value("major", 0);

    $minor = $p->get_value("minor", 0);

    $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 . "}") == 0)

        throw new Exception("Error: " . $p->get_errmsg());

    $p->set_info("Creator", "PDFlib Cookbook");

    $p->set_info("Title", $title );

    $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 == 0)

        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("");

    $buf = $p->get_buffer();

    $len = strlen($buf);

    header("Content-type: application/pdf");

    header("Content-Length: $len");

    header("Content-Disposition: inline; filename=pda_extension_schema_with_type.pdf");

    print $buf;

} catch (PDFlibException $e) {

    die("PDFlib exception occurred:\n" .

        "[" . $e->get_errnum() . "] " . $e->get_apiname() .

        ": " . $e->get_errmsg() . "\n");

} catch (Exception $e) {

    die($e->getMessage());

}

$p=0;

?>