Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle 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 3 of the License, or

// (at your option) any later version.

//

// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

require_once($CFG->dirroot.'/grade/export/lib.php');

require_once($CFG->libdir.'/filelib.php');

class grade_export_xml extends grade_export {

    public $plugin = 'xml';

    public $updatedgradesonly = false; // default to export ALL grades

    /**

     * Ensure we produce correctly formed XML content by encoding idnumbers appropriately

     *

     * @param string $idnumber

     * @return string

     */

    private static function xml_export_idnumber(string $idnumber): string {

        return htmlspecialchars($idnumber, ENT_QUOTES | ENT_XML1);

    }

    /**

     * Handle form processing for export. Note we need to handle the case where there are no 'itemids[]' being included in the

     * form, because each is disabled for selection due to having empty idnumber

     *

     * @param stdClass $formdata

     */

    public function process_form($formdata) {

        if (!isset($formdata->itemids)) {

            $formdata->itemids = self::EXPORT_SELECT_NONE;

        }

        parent::process_form($formdata);

    }

    /**

     * To be implemented by child classes

     * @param boolean $feedback

     * @param boolean $publish Whether to output directly, or send as a file

     * @return string

     */

    public function print_grades($feedback = false) {

        global $CFG;

        require_once($CFG->libdir.'/filelib.php');

        $export_tracking = $this->track_exports();

        $strgrades = get_string('grades');

        /// Calculate file name

        $shortname = format_string($this->course->shortname, true, array('context' => context_course::instance($this->course->id)));

        $downloadfilename = clean_filename("$shortname $strgrades.xml");

        make_temp_directory('gradeexport');

        $tempfilename = $CFG->tempdir .'/gradeexport/'. md5(sesskey().microtime().$downloadfilename);

        if (!$handle = fopen($tempfilename, 'w+b')) {

            throw new \moodle_exception('cannotcreatetempdir');

        }

        /// time stamp to ensure uniqueness of batch export

        fwrite($handle,  '<results batch="xml_export_'.time().'">'."\n");

        $export_buffer = array();

        $geub = new grade_export_update_buffer();

        $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);

        $gui->require_active_enrolment($this->onlyactive);

        $gui->init();

        while ($userdata = $gui->next_user()) {

            $user = $userdata->user;

            if (empty($user->idnumber)) {

                //id number must exist otherwise we cant match up students when importing

                continue;

            }

            // studentgrades[] index should match with corresponding $index

            foreach ($userdata->grades as $itemid => $grade) {

                $grade_item = $this->grade_items[$itemid];

                $grade->grade_item =& $grade_item;

                // MDL-11669, skip exported grades or bad grades (if setting says so)

                if ($export_tracking) {

                    $status = $geub->track($grade);

                    if ($this->updatedgradesonly && ($status == 'nochange' || $status == 'unknown')) {

                        continue;

                    }

                }

                fwrite($handle,  "\t<result>\n");

                if ($export_tracking) {

                    fwrite($handle,  "\t\t<state>$status</state>\n");

                }

                // only need id number

                $gradeitemidnumber = self::xml_export_idnumber($grade_item->idnumber);

                fwrite($handle, "\t\t<assignment>{$gradeitemidnumber}</assignment>\n");

                // this column should be customizable to use either student id, idnumber, uesrname or email.

                $useridnumber = self::xml_export_idnumber($user->idnumber);

                fwrite($handle, "\t\t<student>{$useridnumber}</student>\n");

                // Format and display the grade in the selected display type (real, letter, percentage).

                if (is_array($this->displaytype)) {

                    // Grades display type came from the return of export_bulk_export_data() on grade publishing.

                    foreach ($this->displaytype as $gradedisplayconst) {

                        $gradestr = $this->format_grade($grade, $gradedisplayconst);

                        fwrite($handle,  "\t\t<score>$gradestr</score>\n");

                    }

                } else {

                    // Grade display type submitted directly from the grade export form.

                    $gradestr = $this->format_grade($grade, $this->displaytype);

                    fwrite($handle,  "\t\t<score>$gradestr</score>\n");

                }

                if ($this->export_feedback) {

                    $feedbackstr = $this->format_feedback($userdata->feedbacks[$itemid], $grade);

                    fwrite($handle,  "\t\t<feedback>$feedbackstr</feedback>\n");

                }

                fwrite($handle,  "\t</result>\n");

            }

        }

        fwrite($handle,  "</results>");

        fclose($handle);

        $gui->close();

        $geub->close();

        if (defined('BEHAT_SITE_RUNNING')) {

            // If behat is running, we cannot test the output if we force a file download.

            include($tempfilename);

        } else {

            @header("Content-type: text/xml; charset=UTF-8");

            send_temp_file($tempfilename, $downloadfilename, false);

        }

    }

}