class.ilContObjectExport.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once("./Modules/LearningModule/classes/class.ilObjContentObject.php");

class ilContObjectExport
{
    public $err;                        // error object
    public $db;                 // database object
    public $cont_obj;           // content object (learning module | digilib book)
    public $inst_id;            // installation id
    public $mode;

    public function __construct(&$a_cont_obj, $a_mode = "xml", $a_lang = "")
    {
        global $DIC;

        $ilErr = $DIC["ilErr"];
        $ilDB = $DIC->database();

        $this->cont_obj = $a_cont_obj;

        $this->err = $ilErr;
        $this->db = $ilDB;
        $this->mode = $a_mode;
        $this->lang = $a_lang;

        $this->inst_id = IL_INST_ID;

        $date = time();
        switch ($this->mode) {
            case "html":
                if ($this->lang == "") {
                    $this->export_dir = $this->cont_obj->getExportDirectory("html");
                } else {
                    $this->export_dir = $this->cont_obj->getExportDirectory("html_" . $this->lang);
                }
                $this->subdir = $this->cont_obj->getType() . "_" . $this->cont_obj->getId();
                $this->filename = $this->subdir . ".zip";
                break;

            case "scorm":
                $this->export_dir = $this->cont_obj->getExportDirectory("scorm");
                $this->subdir = $this->cont_obj->getType() . "_" . $this->cont_obj->getId();
                $this->filename = $this->subdir . ".zip";
                break;
            
            case "pdf":
                $this->export_dir = $this->cont_obj->getOfflineDirectory();
                $this->subdir = $date . "__" . $this->inst_id . "__" .
                    $this->cont_obj->getType() . "_" . $this->cont_obj->getId();
                $this->filename = $this->subdir . ".fo";
                break;

            default:
                $this->export_dir = $this->cont_obj->getExportDirectory();
                $this->subdir = $date . "__" . $this->inst_id . "__" .
                    $this->cont_obj->getType() . "_" . $this->cont_obj->getId();
                $this->filename = $this->subdir . ".xml";
                break;
        }
    }

    public function getInstId()
    {
        return $this->inst_id;
    }

    public function buildExportFile($a_mode = "")
    {
        switch ($this->mode) {
            case "html":
                $this->buildExportFileHTML();
                break;
                
            case "scorm":
                $this->buildExportFileSCORM();
                break;

            case "pdf":
                $this->buildExportFilePDF();
                break;

            default:
                return $this->buildExportFileXML($a_mode);
                break;
        }
    }

    public function buildExportFileXML($a_mode = "")
    {
        if (in_array($a_mode, array("master", "masternomedia"))) {
            include_once("./Services/Export/classes/class.ilExport.php");
            $exp = new ilExport();
            $conf = $exp->getConfig("Modules/LearningModule");
            $conf->setMasterLanguageOnly(true, ($a_mode == "master"));
            $exp->exportObject($this->cont_obj->getType(), $this->cont_obj->getId(), "5.1.0");
            return;
        }

        require_once("./Services/Xml/classes/class.ilXmlWriter.php");

        $this->xml = new ilXmlWriter;

        // set dtd definition
        $this->xml->xmlSetDtdDef("<!DOCTYPE ContentObject SYSTEM \"http://www.ilias.de/download/dtd/ilias_co_3_7.dtd\">");

        // set generated comment
        $this->xml->xmlSetGenCmt("Export of ILIAS Content Module " .
            $this->cont_obj->getId() . " of installation " . $this->inst . ".");

        // set xml header
        $this->xml->xmlHeader();

        // create directories
        $this->cont_obj->createExportDirectory();
        ilUtil::makeDir($this->export_dir . "/" . $this->subdir);
        ilUtil::makeDir($this->export_dir . "/" . $this->subdir . "/objects");

        // get Log File
        $expDir = $this->cont_obj->getExportDirectory();
        include_once './Services/Logging/classes/class.ilLog.php';
        $expLog = new ilLog($expDir, "export.log");
        $expLog->delete();
        $expLog->setLogFormat("");
        $expLog->write(date("[y-m-d H:i:s] ") . "Start Export");

        // get xml content
        $this->cont_obj->exportXML(
            $this->xml,
            $this->inst_id,
            $this->export_dir . "/" . $this->subdir,
            $expLog
        );

        // export style
        if ($this->cont_obj->getStyleSheetId() > 0) {
            include_once("./Services/Style/Content/classes/class.ilObjStyleSheet.php");
            $style_obj = new ilObjStyleSheet($this->cont_obj->getStyleSheetId(), false);
            //$style_obj->exportXML($this->export_dir."/".$this->subdir);
            $style_obj->setExportSubDir("style");
            $style_file = $style_obj->export();
            if (is_file($style_file)) {
                copy($style_file, $this->export_dir . "/" . $this->subdir . "/style.zip");
            }
        }

        // dump xml document to screen (only for debugging reasons)
        /*
        echo "<PRE>";
        echo htmlentities($this->xml->xmlDumpMem($format));
        echo "</PRE>";
        */

        // dump xml document to file
        $this->xml->xmlDumpFile($this->export_dir . "/" . $this->subdir . "/" . $this->filename, false);
        
        // help export (workaround to use ref id here)
        if (ilObjContentObject::isOnlineHelpModule((int) $_GET["ref_id"])) {
            include_once("./Services/Export/classes/class.ilExport.php");
            $exp = new ilExport();
            $exp->exportEntity(
                "help",
                $this->cont_obj->getId(),
                "4.3.0",
                "Services/Help",
                "OnlineHelp",
                $this->export_dir . "/" . $this->subdir
            );
        }

        // zip the file
        ilUtil::zip(
            $this->export_dir . "/" . $this->subdir,
            $this->export_dir . "/" . $this->subdir . ".zip"
        );

        // destroy writer object
        $this->xml->_XmlWriter;

        $expLog->write(date("[y-m-d H:i:s] ") . "Finished Export");

        return $this->export_dir . "/" . $this->subdir . ".zip";
    }

    public function buildExportFilePDF()
    {
        die("deprecated.");
    }

    public function buildExportFileHTML()
    {
        // create directories
        if ($this->lang == "") {
            $this->cont_obj->createExportDirectory("html");
        } else {
            $this->cont_obj->createExportDirectory("html_" . $this->lang);
        }


        // get html content
        $this->cont_obj->exportHTML($this->export_dir . "/" . $this->subdir, $expLog, true, "html", $this->lang);
    }

    public function buildExportFileSCORM()
    {
        // create directories
        $this->cont_obj->createExportDirectory("scorm");

        // get html content
        $this->cont_obj->exportSCORM($this->export_dir . "/" . $this->subdir, $expLog);
    }
}