From 0a562bafd1a85edd132efeff959d2d624e9690a8 Mon Sep 17 00:00:00 2001
From: David Mudrak <david@moodle.com>
Date: Fri, 3 Jun 2011 18:03:17 +0200
Subject: [PATCH] MDL-27626 matching question type conversion handler

---
 question/type/match/backup/moodle1/lib.php | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 question/type/match/backup/moodle1/lib.php

diff --git a/question/type/match/backup/moodle1/lib.php b/question/type/match/backup/moodle1/lib.php
new file mode 100644
index 00000000000..08afe9a6b75
--- /dev/null
+++ b/question/type/match/backup/moodle1/lib.php
@@ -0,0 +1,82 @@
+<?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    qtype
+ * @subpackage match
+ * @copyright  2011 David Mudrak <david@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Matching question type conversion handler
+ */
+class moodle1_qtype_match_handler extends moodle1_qtype_handler {
+
+    /**
+     * @return array
+     */
+    public function get_question_subpaths() {
+        return array(
+            'MATCHOPTIONS',
+            'MATCHS/MATCH'
+        );
+    }
+
+    /**
+     * Appends the match specific information to the question
+     */
+    public function process_question(array $data, array $raw) {
+        global $CFG;
+
+        // populate the list of matches first to get their ids
+        // note that the field is re-populated on restore anyway but let us
+        // do our best to produce valid backup files
+        $matchids = array();
+        if (isset($data['matchs']['match'])) {
+            foreach ($data['matchs']['match'] as $match) {
+                $matchids[] = $match['id'];
+            }
+        }
+
+        // convert match options
+        $matchoptions = $data['matchoptions'][0];
+        $matchoptions['id'] = $this->converter->get_nextid();
+        $matchoptions['subquestions'] = implode(',', $matchids);
+        $this->write_xml('matchoptions', $matchoptions, array('/matchoptions/id'));
+
+        // convert matches
+        $this->xmlwriter->begin_tag('matches');
+        if (isset($data['matchs']['match'])) {
+            foreach ($data['matchs']['match'] as $match) {
+                // replay the upgrade step 2009072100
+                $match['questiontextformat'] = 0;
+                if ($CFG->texteditors !== 'textarea' and $data['oldquestiontextformat'] == FORMAT_MOODLE) {
+                    $match['questiontext'] = text_to_html($match['questiontext'], false, false, true);
+                    $match['questiontextformat'] = FORMAT_HTML;
+                } else {
+                    $match['questiontextformat'] = $data['oldquestiontextformat'];
+                }
+
+                $this->write_xml('match', $match, array('/match/id'));
+            }
+        }
+        $this->xmlwriter->end_tag('matches');
+    }
+}