--- /dev/null
+<?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/>.
+
+/**
+ * @package moodlecore
+ * @subpackage backup-moodle2
+ * @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+require_once($CFG->dirroot . '/mod/forum/backup/moodle2/backup_forum_stepslib.php'); // Because it exists (must)
+require_once($CFG->dirroot . '/mod/forum/backup/moodle2/backup_forum_settingslib.php'); // Because it exists (optional)
+
+/**
+ * forum backup task that provides all the settings and steps to perform one
+ * complete backup of the activity
+ */
+class backup_forum_activity_task extends backup_activity_task {
+
+ /**
+ * Define (add) particular settings this activity can have
+ */
+ protected function define_my_settings() {
+ // No particular settings for this activity
+ }
+
+ /**
+ * Define (add) particular steps this activity can have
+ */
+ protected function define_my_steps() {
+ // Forum only has one structure step
+ $this->add_step(new backup_forum_activity_structure_step('forum structure', 'forum.xml'));
+ }
+
+ /**
+ * Code the transformations to perform in the activity in
+ * order to get transportable (encoded) links
+ */
+ static public function encode_content_links($content) {
+ global $CFG;
+
+ $base = preg_quote($CFG->wwwroot,"/");
+
+ // Link to the list of forums
+ $search="/(".$base."\/mod\/forum\/index.php\?id\=)([0-9]+)/";
+ $content= preg_replace($search, '$@FORUMINDEX*$2@$', $content);
+
+ // Link to forum view by moduleid
+ $search="/(".$base."\/mod\/forum\/view.php\?id\=)([0-9]+)/";
+ $content= preg_replace($search, '$@FORUMVIEWBYID*$2@$', $content);
+
+ // Link to forum view by forumid
+ $search="/(".$base."\/mod\/forum\/view.php\?f\=)([0-9]+)/";
+ $content= preg_replace($search, '$@FORUMVIEWBYF*$2@$', $content);
+
+ // Link to forum discussion with parent syntax
+ $search="/(".$base."\/mod\/forum\/discuss.php\?d\=)([0-9]+)\&parent\=([0-9]+)/";
+ $content= preg_replace($search, '$@FORUMDISCUSSIONVIEWPARENT*$2*$3@$', $content);
+
+ // Link to forum discussion with relative syntax
+ $search="/(".$base."\/mod\/forum\/discuss.php\?d\=)([0-9]+)\#([0-9]+)/";
+ $content= preg_replace($search, '$@FORUMDISCUSSIONVIEWINSIDE*$2*$3@$', $content);
+
+ // Link to forum discussion by discussionid
+ $search="/(".$base."\/mod\/forum\/discuss.php\?d\=)([0-9]+)/";
+ $content= preg_replace($search, '$@FORUMDISCUSSIONVIEW*$2@$', $content);
+
+ return $content;
+ }
+}
--- /dev/null
+<?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/>.
+
+/**
+ * @package moodlecore
+ * @subpackage backup-moodle2
+ * @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+/**
+ * Define all the backup steps that will be used by the backup_forum_activity_task
+ */
+
+/**
+ * Define the complete forum structure for backup, with file and id annotations
+ */
+class backup_forum_activity_structure_step extends backup_activity_structure_step {
+
+ protected function define_structure() {
+
+ // To know if we are including userinfo
+ $userinfo = $this->get_setting_value('userinfo');
+
+ // Define each element separated
+
+ $forum = new backup_nested_element('forum', array('id'), array(
+ 'type', 'name', 'intro', 'introformat',
+ 'assessed', 'assesstimestart', 'assesstimefinish', 'scale',
+ 'maxbytes', 'maxattachments', 'forcesubscribe', 'trackingtype',
+ 'rsstype', 'rssarticles', 'timemodified', 'warnafter',
+ 'blockafter', 'blockperiod', 'completiondiscussions', 'completionreplies',
+ 'completionposts'));
+
+ $discussions = new backup_nested_element('discussions');
+
+ $discussion = new backup_nested_element('discussion', array('id'), array(
+ 'name', 'firstpost', 'userid', 'groupid',
+ 'assessed', 'timemodified', 'usermodified', 'timestart',
+ 'timeend'));
+
+ $posts = new backup_nested_element('posts');
+
+ $post = new backup_nested_element('post', array('id'), array(
+ 'parent', 'userid', 'created', 'modified',
+ 'mailed', 'subject', 'message', 'messageformat',
+ 'messagetrust', 'attachment', 'totalscore', 'mailnow'));
+
+ $ratings = new backup_nested_element('ratings');
+
+ $rating = new backup_nested_element('rating', array('id'), array(
+ 'scaleid', 'value', 'userid', 'timecreated', 'timemodified'));
+
+ $subscriptions = new backup_nested_element('subscriptions');
+
+ $subscription = new backup_nested_element('subscription', array('id'), array(
+ 'userid'));
+
+ $readposts = new backup_nested_element('readposts');
+
+ $read = new backup_nested_element('read', array('id'), array(
+ 'userid', 'discussionid', 'postid', 'firstread',
+ 'lastread'));
+
+ // Build the tree
+
+ $forum->add_child($discussions);
+ $discussions->add_child($discussion);
+
+ $forum->add_child($subscriptions);
+ $subscriptions->add_child($subscription);
+
+ $forum->add_child($readposts);
+ $readposts->add_child($read);
+
+ $discussion->add_child($posts);
+ $posts->add_child($post);
+
+ $post->add_child($ratings);
+ $ratings->add_child($rating);
+
+ // Define sources
+
+ $forum->set_source_table('forum', array('id' => backup::VAR_ACTIVITYID));
+
+ // All these source definitions only happen if we are including user info
+ if ($userinfo) {
+ $discussion->set_source_sql('
+ SELECT *
+ FROM {forum_discussions}
+ WHERE forum = ?',
+ array(backup::VAR_PARENTID));
+
+ $post->set_source_table('forum_posts', array('discussion' => backup::VAR_PARENTID));
+
+ $subscription->set_source_table('forum_subscriptions', array('forum' => backup::VAR_PARENTID));
+
+ $read->set_source_table('forum_read', array('forumid' => backup::VAR_PARENTID));
+
+ $rating->set_source_table('rating', array('contextid' => backup::VAR_CONTEXTID,
+ 'itemid' => backup::VAR_PARENTID));
+ $rating->set_source_alias('rating', 'value');
+ }
+
+ // Define id annotations
+
+ $forum->annotate_ids('scale', 'scale');
+
+ $discussion->annotate_ids('group', 'groupid');
+
+ $post->annotate_ids('user', 'userid');
+
+ $rating->annotate_ids('scale', 'scaleid');
+
+ $rating->annotate_ids('user', 'userid');
+
+ $subscription->annotate_ids('user', 'userid');
+
+ $read->annotate_ids('user', 'userid');
+
+ // Define file annotations
+
+ $forum->annotate_files(array('forum_intro'), null); // This file area hasn't itemid
+
+ $post->annotate_files(array('forum_post', 'forum_attachment'), 'id');
+
+ // Return the root element (forum), wrapped into standard activity structure
+ return $this->prepare_activity_structure($forum);
+ }
+
+}
