/mod/resource/backup/moodle2/backup_resource_activity_task.class.php
PHP | 127 lines | 55 code | 19 blank | 53 comment | 11 complexity | a6c045e1eeb8350597606e1ccc0e4fea MD5 | raw file
Possible License(s): MPL-2.0-no-copyleft-exception, LGPL-3.0, GPL-3.0, LGPL-2.1, Apache-2.0, BSD-3-Clause, AGPL-3.0
- <?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/>.
- /**
- * Defines backup_resource_activity_task class
- *
- * @package mod_resource
- * @category backup
- * @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
- * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
- defined('MOODLE_INTERNAL') || die;
- require_once($CFG->dirroot . '/mod/resource/backup/moodle2/backup_resource_stepslib.php');
- /**
- * Provides the steps to perform one complete backup of the Resource instance
- */
- class backup_resource_activity_task extends backup_activity_task {
- /**
- * @param bool $resourceoldexists True if there are records in the resource_old table.
- */
- protected static $resourceoldexists = null;
- /**
- * No specific settings for this activity
- */
- protected function define_my_settings() {
- }
- /**
- * Defines a backup step to store the instance data in the resource.xml file
- */
- protected function define_my_steps() {
- $this->add_step(new backup_resource_activity_structure_step('resource_structure', 'resource.xml'));
- }
- /**
- * Encodes URLs to the index.php and view.php scripts
- *
- * @param string $content some HTML text that eventually contains URLs to the activity instance scripts
- * @return string the content with the URLs encoded
- */
- static public function encode_content_links($content) {
- global $CFG, $DB;
- $base = preg_quote($CFG->wwwroot,"/");
- // Link to the list of resources.
- $search="/(".$base."\/mod\/resource\/index.php\?id\=)([0-9]+)/";
- $content= preg_replace($search, '$@RESOURCEINDEX*$2@$', $content);
- // Link to resource view by moduleid.
- $search = "/(".$base."\/mod\/resource\/view.php\?id\=)([0-9]+)/";
- // Link to resource view by recordid
- $search2 = "/(".$base."\/mod\/resource\/view.php\?r\=)([0-9]+)/";
- // Check whether there are contents in the resource old table.
- if (static::$resourceoldexists === null) {
- static::$resourceoldexists = $DB->record_exists('resource_old', array());
- }
- // If there are links to items in the resource_old table, rewrite them to be links to the correct URL
- // for their new module.
- if (static::$resourceoldexists) {
- // Match all of the resources.
- $result = preg_match_all($search, $content, $matches, PREG_PATTERN_ORDER);
- // Course module ID resource links.
- if ($result) {
- list($insql, $params) = $DB->get_in_or_equal($matches[2]);
- $oldrecs = $DB->get_records_select('resource_old', "cmid $insql", $params, '', 'cmid, newmodule');
- for ($i = 0; $i < count($matches[0]); $i++) {
- $cmid = $matches[2][$i];
- if (isset($oldrecs[$cmid])) {
- // Resource_old item, rewrite it
- $replace = '$@' . strtoupper($oldrecs[$cmid]->newmodule) . 'VIEWBYID*' . $cmid . '@$';
- } else {
- // Not in the resource old table, don't rewrite
- $replace = '$@RESOURCEVIEWBYID*'.$cmid.'@$';
- }
- $content = str_replace($matches[0][$i], $replace, $content);
- }
- }
- $matches = null;
- $result = preg_match_all($search2, $content, $matches, PREG_PATTERN_ORDER);
- // No resource links.
- if (!$result) {
- return $content;
- }
- // Resource ID links.
- list($insql, $params) = $DB->get_in_or_equal($matches[2]);
- $oldrecs = $DB->get_records_select('resource_old', "oldid $insql", $params, '', 'oldid, cmid, newmodule');
- for ($i = 0; $i < count($matches[0]); $i++) {
- $recordid = $matches[2][$i];
- if (isset($oldrecs[$recordid])) {
- // Resource_old item, rewrite it
- $replace = '$@' . strtoupper($oldrecs[$recordid]->newmodule) . 'VIEWBYID*' . $oldrecs[$recordid]->cmid . '@$';
- $content = str_replace($matches[0][$i], $replace, $content);
- }
- }
- } else {
- $content = preg_replace($search, '$@RESOURCEVIEWBYID*$2@$', $content);
- }
- return $content;
- }
- }