class.ilSurveyExport.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 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. |
        +-----------------------------------------------------------------------------+
*/

include_once "./Modules/Survey/classes/inc.SurveyConstants.php";

class ilSurveyExport
{
        var $err;                       // error object
        var $db;                        // database object
        var $ilias;                     // ilias object
        var $survey_obj;                // survey object
        var $inst_id;           // installation id
        var $mode;
        var $subdir;
        var $filename;
        var $export_dir;

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

                $this->survey_obj =& $a_survey_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)
                {
                        default:
                                $this->export_dir = $this->survey_obj->getExportDirectory();
                                $this->subdir = $date."__".$this->inst_id."__".
                                        "survey"."__".$this->survey_obj->getId();
                                $this->filename = $this->subdir.".xml";
                                break;
                }
        }

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


        function buildExportFile()
        {
                switch ($this->mode)
                {
                        default:
                                return $this->buildExportFileXML();
                                break;
                }
        }

        function buildExportFileXML()
        {
                global $ilBench;

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

                // create directories
                $this->survey_obj->createExportDirectory();
                include_once "./Services/Utilities/classes/class.ilUtil.php";
                ilUtil::makeDir($this->export_dir."/".$this->subdir);
                ilUtil::makeDir($this->export_dir."/".$this->subdir."/objects");

                // get Log File
                $expDir = $this->survey_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");

                // write xml file
                $xmlFile = fopen($this->export_dir."/".$this->subdir."/".$this->filename, "w");
                fwrite($xmlFile, $this->survey_obj->toXML());
                fclose($xmlFile);

                // add media objects which were added with tiny mce
                $this->exportXHTMLMediaObjects($this->export_dir."/".$this->subdir);

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

                if (@file_exists($this->export_dir."/".$this->subdir.".zip"))
                {
                        // remove export directory and contents
                        if (@is_dir($this->export_dir."/".$this->subdir))
                        {
                                ilUtil::delDir($this->export_dir."/".$this->subdir);
                        }
                }
                $expLog->write(date("[y-m-d H:i:s] ")."Finished Export");
                $ilBench->stop("SurveyExport", "buildExportFile");

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

        function exportXHTMLMediaObjects($a_export_dir)
        {
                global $ilBench;
                $ilBench->start("SurveyExport", "exportXHTMLMediaObjects");
                include_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");

                $mobs = ilObjMediaObject::_getMobsOfObject("svy:html", $this->survey_obj->getId());
                foreach ($mobs as $mob)
                {
                        $mob_obj =& new ilObjMediaObject($mob);
                        $mob_obj->exportFiles($a_export_dir);
                        unset($mob_obj);
                }
                /* maybe this will be used later 
                foreach ($this->survey_obj->questions as $question_id)
                {
                        $mobs = ilObjMediaObject::_getMobsOfObject("spl:html", $question_id);
                        foreach ($mobs as $mob)
                        {
                                $mob_obj =& new ilObjMediaObject($mob);
                                $mob_obj->exportFiles($a_export_dir);
                                unset($mob_obj);
                        }
                }*/
                $ilBench->stop("SurveyExport", "exportXHTMLMediaObjects");
        }

}

?>