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104 lines
3.3 KiB
104 lines
3.3 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Deprecated file, classes moved to autoloaded locations
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*
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* @package core
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* @subpackage course
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* @copyright 2013 Marina Glancy
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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debugging('Class coursecat is now alias to autoloaded class core_course_category, ' .
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'course_in_list is an alias to core_course_list_element. '.
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'Class coursecat_sortable_records is deprecated without replacement. Do not include coursecatlib.php',
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DEBUG_DEVELOPER);
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/**
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* An array of records that is sortable by many fields.
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*
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* For more info on the ArrayObject class have a look at php.net.
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*
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* @package core
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* @subpackage course
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* @copyright 2013 Sam Hemelryk
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class coursecat_sortable_records extends ArrayObject {
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/**
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* An array of sortable fields.
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* Gets set temporarily when sort is called.
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* @var array
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*/
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protected $sortfields = array();
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/**
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* Sorts this array using the given fields.
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*
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* @param array $records
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* @param array $fields
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* @return array
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*/
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public static function sort(array $records, array $fields) {
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$records = new coursecat_sortable_records($records);
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$records->sortfields = $fields;
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$records->uasort(array($records, 'sort_by_many_fields'));
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return $records->getArrayCopy();
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}
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/**
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* Sorts the two records based upon many fields.
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*
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* This method should not be called itself, please call $sort instead.
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* It has been marked as access private as such.
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*
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* @access private
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* @param stdClass $a
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* @param stdClass $b
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* @return int
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*/
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public function sort_by_many_fields($a, $b) {
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foreach ($this->sortfields as $field => $mult) {
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// Nulls first.
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if (is_null($a->$field) && !is_null($b->$field)) {
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return -$mult;
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}
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if (is_null($b->$field) && !is_null($a->$field)) {
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return $mult;
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}
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if (is_string($a->$field) || is_string($b->$field)) {
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// String fields.
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if ($cmp = strcoll($a->$field, $b->$field)) {
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return $mult * $cmp;
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}
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} else {
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// Int fields.
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if ($a->$field > $b->$field) {
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return $mult;
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}
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if ($a->$field < $b->$field) {
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return -$mult;
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}
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}
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}
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return 0;
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}
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}
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