content/classes/class.ilContObjectExport.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

require_once("content/classes/class.ilObjContentObject.php");

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

        function ilContObjectExport(&$a_cont_obj, $a_mode = "xml")
        {
                global $ilErr, $ilDB, $ilias;

                $this->cont_obj =& $a_cont_obj;

                $this->err =& $ilErr;
                $this->ilias =& $ilias;
                $this->db =& $ilDB;
                $this->mode = $a_mode;

                $settings = $this->ilias->getAllSettings();
                //$this->inst_id = $settings["inst_id"];
                $this->inst_id = IL_INST_ID;

                $date = time();
                switch($this->mode)
                {
                        case "html":
                                $this->export_dir = $this->cont_obj->getExportDirectory("html");
                                $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;
                }
        }

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

    function exportRekursiv($depth, $left, $right)
        {
                // Jetzt alle lm_data anhand der obj_id auslesen.
                $query = "SELECT  *
                        FROM lm_tree, lm_data
                        WHERE lm_tree.lm_id = ".$this->cont_obj->getId()."
                        AND   lm_tree.child = lm_data.obj_id
                        AND   ( lm_data.type =  'st' OR lm_data.type =  'pg' )
                        AND lm_tree.depth = $depth
                        AND lm_tree.lft>$left and lm_tree.rgt<$right
                        ORDER BY lm_tree.lft";

        $result = $this->db->query($query);

        while (is_array($row = $result->fetchRow(DB_FETCHMODE_ASSOC)) )
                {
                        if ($row["type"] == "st")
                        {
                                $xml .= "<StructureObject>";

                                $nested = new ilNestedSetXML();
                                $xml .= $nested->export($row["obj_id"],"st");
                                $xml .= "\n";

                                $xml .= $this->exportRekursiv($depth+1, $row["lft"], $row["rgt"]);

                                $xml .= "</StructureObject>";
                        }

                        if ($row["type"] == "pg")
                        {

                $query = "SELECT * FROM page_object WHERE page_id='".$row["obj_id"]."' ";
                                $result2 = $this->db->query($query);

                                $row2 = $result2->fetchRow(DB_FETCHMODE_ASSOC);

                                $PO = $row2["content"]."\n";

                                if (stristr($PO,"MediaObject"))
                                {

                                        $dom = domxml_open_mem($PO);
                                        $xpc = xpath_new_context($dom);
                                        $path = "//MediaObject/MediaAlias";
                                        $res =& xpath_eval($xpc, $path);
                                        for($i = 0; $i < count($res->nodeset); $i++)
                                        {
                                                $id_arr = explode("_", $res->nodeset[$i]->get_attribute("OriginId"));
                                                $mob_id = $id_arr[count($id_arr) - 1];
                                                $this->mob_ids[$mob_id] = true;
                                        }
                                }

                                $nested = new ilNestedSetXML();
                                $mdxml = $nested->export($row["obj_id"],"pg");

                                $PO = str_replace("<PageObject>","<PageObject>\n$mdxml\n",$PO);

                                $xml .= $PO;

                        }
                }
                return($xml);
        }


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

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

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

        function buildExportFileXML()
        {
                global $ilBench;

                $ilBench->start("ContentObjectExport", "buildExportFile");

                require_once("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();
                $expLog = new ilLog($expDir, "export.log");
                $expLog->delete();
                $expLog->setLogFormat("");
                $expLog->write(date("[y-m-d H:i:s] ")."Start Export");

                // get xml content
//echo "ContObjExport:".$this->inst_id.":<br>";
                $ilBench->start("ContentObjectExport", "buildExportFile_getXML");
                $this->cont_obj->exportXML($this->xml, $this->inst_id,
                        $this->export_dir."/".$this->subdir, $expLog);
                $ilBench->stop("ContentObjectExport", "buildExportFile_getXML");

                // export style
                if ($this->cont_obj->getStyleSheetId() > 0)
                {
                        include_once("classes/class.ilObjStyleSheet.php");
                        $style_obj = new ilObjStyleSheet($this->cont_obj->getStyleSheetId(), false);
                        $style_obj->exportXML($this->export_dir."/".$this->subdir);
                }

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

                // dump xml document to file
                $ilBench->start("ContentObjectExport", "buildExportFile_dumpToFile");
                $this->xml->xmlDumpFile($this->export_dir."/".$this->subdir."/".$this->filename
                        , false);
                $ilBench->stop("ContentObjectExport", "buildExportFile_dumpToFile");

                // zip the file
                $ilBench->start("ContentObjectExport", "buildExportFile_zipFile");
//echo "-".$this->export_dir."/".$this->subdir."-";
                ilUtil::zip($this->export_dir."/".$this->subdir,
                        $this->export_dir."/".$this->subdir.".zip");
                $ilBench->stop("ContentObjectExport", "buildExportFile_zipFile");

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

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

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

        function buildExportFilePDF()
        {
                global $ilBench;

                $ilBench->start("ContentObjectExport", "buildPDFFile");

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

                $this->xml = new ilXmlWriter;

                // set dtd definition
                //$this->xml->xmlSetDtdDef("<!DOCTYPE LearningModule SYSTEM \"http://www.ilias.uni-koeln.de/download/dtd/ilias_co.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
        //$this->cont_obj->createExportDirectory("pdf");   //not implemened!
                //ilUtil::makeDir($this->export_dir."/".$this->subdir);
                //ilUtil::makeDir($this->export_dir."/".$this->subdir."/objects");

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

                // get xml content
                $ilBench->start("ContentObjectExport", "buildPDFFile_getFO");
                $this->cont_obj->exportFO($this->xml,
                        $this->export_dir."/".$this->subdir, $expLog);
                $ilBench->stop("ContentObjectExport", "buildPDFFile_getFO");


                // dump fo document to file
                $ilBench->start("ContentObjectExport", "buildPDFFile_dumpToFile");
//echo "dumping:".$this->export_dir."/".$this->filename;
                $this->xml->xmlDumpFile($this->export_dir."/".$this->filename
                        , false);
                $ilBench->stop("ContentObjectExport", "buildPDFFile_dumpToFile");

                // convert fo to pdf file
                //$ilBench->start("ContentObjectExport", "buildExportFile_zipFile");
                include_once("classes/class.ilFOPUtil.php");
                ilFOPUtil::makePDF($this->export_dir."/".$this->filename,
                        $this->export_dir."/".$this->subdir.".pdf");
                //$ilBench->stop("ContentObjectExport", "buildExportFile_zipFile");

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

                //$expLog->write(date("[y-m-d H:i:s] ")."Finished Export");
                $ilBench->stop("ContentObjectExport", "buildPDFFile");
        }

        function buildExportFileHTML()
        {
                global $ilBench;

                $ilBench->start("ContentObjectExport", "buildHTMLPackage");

                // create directories
                $this->cont_obj->createExportDirectory("html");

                // get html content
                $ilBench->start("ContentObjectExport", "buildHTMLPackage_getHTML");
                $this->cont_obj->exportHTML($this->export_dir."/".$this->subdir, $expLog);
                $ilBench->stop("ContentObjectExport", "buildHTMLPackage_getHTML");

                //$expLog->write(date("[y-m-d H:i:s] ")."Finished Export");
                $ilBench->stop("ContentObjectExport", "buildHTMLPackage");
        }

        function buildExportFileSCORM()
        {
                global $ilBench;

                $ilBench->start("ContentObjectExport", "buildSCORMPackage");

                // create directories
                $this->cont_obj->createExportDirectory("scorm");

                // get html content
                $ilBench->start("ContentObjectExport", "buildSCORMPackage_getSCORM");
                $this->cont_obj->exportSCORM($this->export_dir."/".$this->subdir, $expLog);
                $ilBench->stop("ContentObjectExport", "buildSCORMPackage_getSCORM");

                //$expLog->write(date("[y-m-d H:i:s] ")."Finished Export");
                $ilBench->stop("ContentObjectExport", "buildSCORMPackage");
        }

}

?>