MDL-27449 Backup - added scorm module 1.9 backup converter
authorAparup Banerjee <aparup@moodle.com>
Thu, 26 May 2011 07:33:00 +0000 (15:33 +0800)
committerAparup Banerjee <aparup@moodle.com>
Mon, 30 May 2011 06:20:35 +0000 (14:20 +0800)
mod/scorm/backup/moodle1/lib.php [new file with mode: 0644]

diff --git a/mod/scorm/backup/moodle1/lib.php b/mod/scorm/backup/moodle1/lib.php
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+<?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/>.
+
+/**
+ * Provides support for the conversion of moodle1 backup to the moodle2 format
+ *
+ * @package    mod
+ * @subpackage scorm
+ * @copyright  2011 Aparup Banerjee <nebgor@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Scorm conversion handler
+ */
+class moodle1_mod_scorm_handler extends moodle1_mod_handler {
+
+    /**
+     * Declare the paths in moodle.xml we are able to convert
+     *
+     * The method returns list of {@link convert_path} instances.
+     * For each path returned, the corresponding conversion method must be
+     * defined.
+     *
+     * Note that the path /MOODLE_BACKUP/COURSE/MODULES/MOD/SCORM does not
+     * actually exist in the file. The last element with the module name was
+     * appended by the moodle1_converter class.
+     *
+     * @return array of {@link convert_path} instances
+     */
+    public function get_paths() {
+        return array(
+            new convert_path('scorm', '/MOODLE_BACKUP/COURSE/MODULES/MOD/SCORM',
+                array(
+                    'newfields' => array(
+                        'whatgrade' => 0,
+                        'scormtype' => 'local',
+                        'sha1hash' => null,
+                        'revision' => '0',
+                        'forcecompleted' => 1,
+                        'forcenewattempt' => 0,
+                        'lastattemptlock' => 0,
+                        'displayattemptstatus' => 1,
+                        'displaycoursestructure' => 1,
+                        'timeopen' => '0',
+                        'timeclose' => '0',
+                        'introformat' => '0',
+                        'launch' => null,
+                    ),
+                    'renamefields' => array(
+                        'summary' => 'intro'
+                    )
+                )
+            ),
+            new convert_path('scorm_sco', '/MOODLE_BACKUP/COURSE/MODULES/MOD/SCORM/SCOES/SCO')
+        );
+    }
+
+    /**
+     * This is executed every time we have one /MOODLE_BACKUP/COURSE/MODULES/MOD/SCORM
+     * data available
+     */
+    public function process_scorm($data) {
+        global $CFG;
+        // get the course module id and context id
+        $instanceid = $data['id'];
+        $cminfo     = $this->get_cminfo($instanceid);
+        $moduleid   = $cminfo['id'];
+        $contextid  = $this->converter->get_contextid(CONTEXT_MODULE, $moduleid);
+
+        // conditionally migrate to html format in intro
+        if ($CFG->texteditors !== 'textarea' && $data['introformat'] == FORMAT_MOODLE ) {
+            $data['intro'] = text_to_html($data['intro'], false, false, true);
+            $data['introformat'] = FORMAT_HTML;
+        }
+
+        // check 1.9 version where backup was created
+        $backupinfo = $this->converter->get_stash('backup_info');
+        if ($backupinfo['moodle_version'] < 2007110503) {
+            // as we have no module version data, assume $currmodule->version <= $module->version
+            // - fix data as the source 1.9 build hadn't yet at time of backing up.
+            $data['grademethod'] = $data['grademethod']%10;
+        }
+
+        // update scormtype (logic is consistent as done in scorm/db/upgrade.php)
+        $ismanifest = preg_match('/imsmanifest\.xml$/', $data['reference']);
+        $iszippif = preg_match('/.(zip|pif)$/', $data['reference']);
+        $isurl = preg_match('/^((http|https):\/\/|www\.)/', $data['reference']);
+        if ($isurl) {
+            if ($ismanifest) {
+                $data['scormtype'] = 'external';
+            } else if ($iszippif) {
+                $data['scormtype'] = 'localtype';
+            }
+        }
+        // @todo upgrade to new file storage? re: $data['reference'] file
+
+        // we now have all information needed to start writing into the file
+        $this->open_xml_writer("activities/scorm_{$moduleid}/scorm.xml");
+        $this->xmlwriter->begin_tag('activity', array('id' => $instanceid, 'moduleid' => $moduleid,
+            'modulename' => 'scorm', 'contextid' => $contextid));
+        $this->xmlwriter->begin_tag('scorm', array('id' => $instanceid));
+
+        unset($data['id']); // we already write it as attribute, do not repeat it as child element
+        foreach ($data as $field => $value) {
+            $this->xmlwriter->full_tag($field, $value);
+        }
+        $this->xmlwriter->begin_tag('scoes');
+    }
+    /**
+     * This is executed every time we have one /MOODLE_BACKUP/COURSE/MODULES/MOD/SCORM/SCOES/SCO
+     * data available
+     */
+    public function process_scorm_sco($data) {
+        $this->write_xml('sco', $data, array('/sco/id'));
+    }
+
+    /**
+     * This is executed when we reach the closing </MOD> tag of our 'scorm' path
+     */
+    public function on_scorm_end() {
+        $this->xmlwriter->end_tag('scoes');
+        $this->xmlwriter->end_tag('scorm');
+        $this->xmlwriter->end_tag('activity');
+        $this->close_xml_writer();
+    }
+}
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