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/>.

/**

 * Provides support for the conversion of moodle1 backup to the moodle2 format

 *

 * @package    workshopform_numerrors

 * @copyright  2011 David Mudrak <david@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die();

require_once($CFG->libdir.'/gradelib.php'); // grade_floatval() called here

/**

 * Conversion handler for the numerrors grading strategy data

 */

class moodle1_workshopform_numerrors_handler extends moodle1_workshopform_handler {

    /** @var array */

    protected $mappings = array();

    /** @var array */

    protected $dimensions = array();

    /**

     * New workshop instance is being processed

     */

    public function on_elements_start() {

        $this->mappings = array();

        $this->dimensions = array();

    }

    /**

     * Converts <ELEMENT> into <workshopform_numerrors_dimension> and stores it for later writing

     *

     * @param array $data legacy element data

     * @param array $raw raw element data

     *

     * @return array to be written to workshop.xml

     */

    public function process_legacy_element(array $data, array $raw) {

        $workshop = $this->parenthandler->get_current_workshop();

        $mapping = array();

        $mapping['id'] = $data['id'];

        $mapping['nonegative'] = $data['elementno'];

        if ($workshop['grade'] == 0 or $data['maxscore'] == 0) {

            $mapping['grade'] = 0;

        } else {

            $mapping['grade'] = grade_floatval($data['maxscore'] / $workshop['grade'] * 100);

        }

        $this->mappings[] = $mapping;

        $converted = null;

        if (trim($data['description']) and $data['description'] <> '@@ GRADE_MAPPING_ELEMENT @@') {

            // prepare a fake record and re-use the upgrade logic

            $fakerecord = (object)$data;

            $converted = (array)workshopform_numerrors_upgrade_element($fakerecord, 12345678);

            unset($converted['workshopid']);

            $converted['id'] = $data['id'];

            $this->dimensions[] = $converted;

        }

        return $converted;

    }

    /**

     * Writes gathered mappings and dimensions

     */

    public function on_elements_end() {

        foreach ($this->mappings as $mapping) {

            $this->write_xml('workshopform_numerrors_map', $mapping, array('/workshopform_numerrors_map/id'));

        }

        foreach ($this->dimensions as $dimension) {

            $this->write_xml('workshopform_numerrors_dimension', $dimension, array('/workshopform_numerrors_dimension/id'));

        }

    }

}

/**

 * Transforms a given record from workshop_elements_old into an object to be saved into workshopform_numerrors

 *

 * @param stdClass $old legacy record from workshop_elements_old

 * @param int $newworkshopid id of the new workshop instance that replaced the previous one

 * @return stdclass to be saved in workshopform_numerrors

 */

function workshopform_numerrors_upgrade_element(stdclass $old, $newworkshopid) {

    $new = new stdclass();

    $new->workshopid = $newworkshopid;

    $new->sort = $old->elementno;

    $new->description = $old->description;

    $new->descriptionformat = FORMAT_HTML;

    $new->grade0 = get_string('grade0default', 'workshopform_numerrors');

    $new->grade1 = get_string('grade1default', 'workshopform_numerrors');

    // calculate new weight of the element. Negative weights are not supported any more and

    // are replaced with weight = 0. Legacy workshop did not store the raw weight but the index

    // in the array of weights (see $WORKSHOP_EWEIGHTS in workshop 1.x)

    // workshop 2.0 uses integer weights only (0-16) so all previous weights are multiplied by 4.

    switch ($old->weight) {

        case 8: $new->weight = 1; break;

        case 9: $new->weight = 2; break;

        case 10: $new->weight = 3; break;

        case 11: $new->weight = 4; break;

        case 12: $new->weight = 6; break;

        case 13: $new->weight = 8; break;

        case 14: $new->weight = 16; break;

        default: $new->weight = 0;

    }

    return $new;

}