on-demand release 4.0dev+
[moodle.git] / mod / chat / backup / moodle2 / backup_chat_activity_task.class.php
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79447c50 1<?php
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2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
16
17/**
63baccbc 18 * Defines backup_chat_activity_task class
79447c50 19 *
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20 * @package mod_chat
21 * @category backup
22 * @copyright 2010 onwards Dongsheng Cai <dongsheng@moodle.com>
23 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
79447c50 24 */
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25
26defined('MOODLE_INTERNAL') || die();
27
28require_once($CFG->dirroot . '/mod/chat/backup/moodle2/backup_chat_stepslib.php');
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29
30/**
63baccbc 31 * Provides the steps to perform one complete backup of the Chat instance
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32 */
33class backup_chat_activity_task extends backup_activity_task {
34
35 /**
63baccbc 36 * No specific settings for this activity
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37 */
38 protected function define_my_settings() {
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39 }
40
41 /**
63baccbc 42 * Defines a backup step to store the instance data in the chat.xml file
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43 */
44 protected function define_my_steps() {
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45 $this->add_step(new backup_chat_activity_structure_step('chat_structure', 'chat.xml'));
46 }
47
48 /**
63baccbc 49 * Encodes URLs to the index.php and view.php scripts
79447c50 50 *
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51 * @param string $content some HTML text that eventually contains URLs to the activity instance scripts
52 * @return string the content with the URLs encoded
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53 */
54 static public function encode_content_links($content) {
55 global $CFG;
56
c52b4db5 57 $base = preg_quote($CFG->wwwroot . '/mod/chat', '#');
79447c50 58
c52b4db5 59 // Link to the list of chats.
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60 $pattern = "#(".$base."\/index.php\?id\=)([0-9]+)#";
61 $content = preg_replace($pattern, '$@CHATINDEX*$2@$', $content);
62
c52b4db5 63 // Link to chat view by moduleid.
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64 $pattern = "#(".$base."\/view.php\?id\=)([0-9]+)#";
65 $content = preg_replace($pattern, '$@CHATVIEWBYID*$2@$', $content);
66
67 return $content;
68 }
69}