class.ilTestPDFGenerator.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilTestPDFGenerator 
{
        const PDF_OUTPUT_DOWNLOAD = 'D';
        const PDF_OUTPUT_INLINE = 'I';
        const PDF_OUTPUT_FILE = 'F';

        private static function removeScriptElements($html)
        {
                if(!is_string($html) || !strlen(trim($html)))
                {
                        return $html;
                }

                $dom = new DOMDocument("1.0", "utf-8");
                if(!@$dom->loadHTML('<?xml encoding="UTF-8">' . $html))
                {
                        return $html;
                }

                $invalid_elements = array();

                $script_elements     = $dom->getElementsByTagName('script');
                foreach($script_elements as $elm)
                {
                        $invalid_elements[] = $elm;
                }

                foreach($invalid_elements as $elm)
                {
                        $elm->parentNode->removeChild($elm);
                }

                $dom->encoding = 'UTF-8';
                $cleaned_html = $dom->saveHTML();
                if(!$cleaned_html)
                {
                        return $html;
                }

                return $cleaned_html;
        }

        public static function generatePDF($pdf_output, $output_mode, $filename=null)
        {
                $pdf_output = self::preprocessHTML($pdf_output);
                
                if (substr($filename, strlen($filename) - 4, 4) != '.pdf')
                {
                        $filename .= '.pdf';
                }
                
                require_once './Services/PDFGeneration/classes/class.ilPDFGeneration.php';
                
                $job = new ilPDFGenerationJob();
                $job->setAutoPageBreak(true)
                        ->setCreator('ILIAS Test')
                        ->setFilename($filename)
                        ->setMarginLeft('20')
                        ->setMarginRight('20')
                        ->setMarginTop('20')
                        ->setMarginBottom('20')
                        ->setOutputMode($output_mode)
                        ->addPage($pdf_output);
                
                ilPDFGeneration::doJob($job);
        }
        
        public static function preprocessHTML($html)
        {
                $html = self::removeScriptElements($html);
                $pdf_css_path = self::getTemplatePath('test_pdf.css');
                return '<style>' . file_get_contents($pdf_css_path)     . '</style>' . $html;
        }

        protected static function getTemplatePath($a_filename)
        {
                        $module_path = "Modules/Test/";

                        // use ilStyleDefinition instead of account to get the current skin
                        include_once "Services/Style/classes/class.ilStyleDefinition.php";
                        if (ilStyleDefinition::getCurrentSkin() != "default")
                        {
                                $fname = "./Customizing/global/skin/".
                                        ilStyleDefinition::getCurrentSkin()."/".$module_path.basename($a_filename);
                        }

                        if($fname == "" || !file_exists($fname))
                        {
                                $fname = "./".$module_path."templates/default/".basename($a_filename);
                        }
                return $fname;
        }

}