Proyectos de Subversion Moodle

<?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_imscp

 * @copyright  2011 Andrew Davis <andrew@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die();

/**

 * imscp conversion handler. This resource handler is called by moodle1_mod_resource_handler

 *

 * @copyright  2011 Andrew Davis <andrew@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class moodle1_mod_imscp_handler extends moodle1_resource_successor_handler {

    /** @var moodle1_file_manager the file manager instance */

    protected $fileman = null;

    /**

     * Converts /MOODLE_BACKUP/COURSE/MODULES/MOD/RESOURCE data

     * Called by moodle1_mod_resource_handler::process_resource()

     */

    public function process_legacy_resource(array $data, array $raw = null) {

        $instanceid    = $data['id'];

        $currentcminfo = $this->get_cminfo($instanceid);

        $moduleid      = $currentcminfo['id'];

        $contextid     = $this->converter->get_contextid(CONTEXT_MODULE, $moduleid);

        // Prepare the new imscp instance record.

        $imscp                  = array();

        $imscp['id']            = $data['id'];

        $imscp['name']          = $data['name'];

        $imscp['intro']         = $data['intro'];

        $imscp['introformat']   = $data['introformat'];

        $imscp['revision']      = 1;

        $imscp['keepold']       = 1;

        $imscp['structure']     = null;

        $imscp['timemodified']  = $data['timemodified'];

        // Prepare a fresh new file manager for this instance.

        $this->fileman = $this->converter->get_file_manager($contextid, 'mod_imscp');

        // Convert course files embedded into the intro.

        $this->fileman->filearea = 'intro';

        $this->fileman->itemid   = 0;

        $imscp['intro'] = moodle1_converter::migrate_referenced_files($imscp['intro'], $this->fileman);

        // Migrate package backup file.

        if ($data['reference']) {

            $packagename = basename($data['reference']);

            $packagepath = $this->converter->get_tempdir_path().'/moddata/resource/'.$data['id'].'/'.$packagename;

            if (file_exists($packagepath)) {

                $this->fileman->filearea = 'backup';

                $this->fileman->itemid   = 1;

                $this->fileman->migrate_file('moddata/resource/'.$data['id'].'/'.$packagename);

            } else {

                $this->log('missing imscp package', backup::LOG_WARNING, 'moddata/resource/'.$data['id'].'/'.$packagename);

            }

        }

        // Migrate extracted package data.

        $this->fileman->filearea = 'content';

        $this->fileman->itemid   = 1;

        $this->fileman->migrate_directory('moddata/resource/'.$data['id']);

        // Parse manifest.

        $structure = $this->parse_structure($this->converter->get_tempdir_path().

                    '/moddata/resource/'.$data['id'].'/imsmanifest.xml', $imscp, $contextid);

        $imscp['structure'] = is_array($structure) ? serialize($structure) : null;

        // Write imscp.xml.

        $this->open_xml_writer("activities/imscp_{$moduleid}/imscp.xml");

        $this->xmlwriter->begin_tag('activity', array('id' => $instanceid, 'moduleid' => $moduleid,

            'modulename' => 'imscp', 'contextid' => $contextid));

        $this->write_xml('imscp', $imscp, array('/imscp/id'));

        $this->xmlwriter->end_tag('activity');

        $this->close_xml_writer();

        // Write inforef.xml.

        $this->open_xml_writer("activities/imscp_{$moduleid}/inforef.xml");

        $this->xmlwriter->begin_tag('inforef');

        $this->xmlwriter->begin_tag('fileref');

        foreach ($this->fileman->get_fileids() as $fileid) {

            $this->write_xml('file', array('id' => $fileid));

        }

        $this->xmlwriter->end_tag('fileref');

        $this->xmlwriter->end_tag('inforef');

        $this->close_xml_writer();

    }

    // Internal implementation details follow.

    /**

     * Parse the IMS package structure for the $imscp->structure field

     *

     * @param string $manifestfilepath the full path to the manifest file to parse

     */

    protected function parse_structure($manifestfilepath, $imscp, $context) {

        global $CFG;

        if (!file_exists($manifestfilepath)) {

            $this->log('missing imscp manifest file', backup::LOG_WARNING);

            return null;

        }

        $manifestfilecontents = file_get_contents($manifestfilepath);

        if (empty($manifestfilecontents)) {

            $this->log('empty imscp manifest file', backup::LOG_WARNING);

            return null;

        }

        require_once($CFG->dirroot.'/mod/imscp/locallib.php');

        return imscp_parse_manifestfile($manifestfilecontents, $imscp, $context);

    }

}