.
/**
* @package moodlecore
* @subpackage backup-imscc
* @copyright 2009 Mauro Rondinelli (mauro.rondinelli [AT] uvcms.com)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.');
require_once($CFG->dirroot . '/backup/cc/includes/constants.php');
require_once($CFG->dirroot . '/backup/cc/cc2moodle.php');
function cc_convert ($dir) {
global $OUTPUT;
$manifest_file = $dir . DIRECTORY_SEPARATOR . 'imsmanifest.xml';
$moodle_file = $dir . DIRECTORY_SEPARATOR . 'moodle.xml';
$schema_file = 'cc' . DIRECTORY_SEPARATOR . '' . DIRECTORY_SEPARATOR . 'schemas' . DIRECTORY_SEPARATOR . 'cclibxml2validator.xsd';
if (is_readable($manifest_file) && !is_readable($moodle_file)) {
$is_cc = detect_cc_format($manifest_file);
if ($is_cc) {
$detected_requirements = detect_requirements();
if (!$detected_requirements["php5"]) {
echo $OUTPUT->notification(get_string('cc_import_req_php5', 'imscc'));
return false;
}
if (!$detected_requirements["dom"]) {
echo $OUTPUT->notification(get_string('cc_import_req_dom', 'imscc'));
return false;
}
if (!$detected_requirements["libxml"]) {
echo $OUTPUT->notification(get_string('cc_import_req_libxml', 'imscc'));
return false;
}
if (!$detected_requirements["libxmlminversion"]) {
echo $OUTPUT->notification(get_string('cc_import_req_libxmlminversion', 'imscc'));
return false;
}
if (!$detected_requirements["xsl"]) {
echo $OUTPUT->notification(get_string('cc_import_req_xsl', 'imscc'));
return false;
}
echo get_string('cc2moodle_checking_schema', 'imscc') . '
';
$cc_manifest = new DOMDocument();
if ($cc_manifest->load($manifest_file)) {
if ($cc_manifest->schemaValidate($schema_file)) {
echo get_string('cc2moodle_valid_schema', 'imscc') . '
';
$cc2moodle = new cc2moodle($manifest_file);
if (!$cc2moodle->is_auth()) {
return $cc2moodle->generate_moodle_xml();
} else {
echo $OUTPUT->notification(get_string('cc2moodle_req_auth', 'imscc'));
return false;
}
} else {
echo $OUTPUT->notification(get_string('cc2moodle_invalid_schema', 'imscc'));
return false;
}
} else {
echo $OUTPUT->notification(get_string('cc2moodle_manifest_dont_load', 'imscc'));
return false;
}
}
}
return true;
}
function detect_requirements () {
if (floor(phpversion()) >= 5) {
$detected["php5"] = true;
} else {
$detected["php5"] = false;
}
$detected["xsl"] = extension_loaded('xsl');
$detected['dom'] = extension_loaded('dom');
$detected['libxml'] = extension_loaded('libxml');
$detected['libxmlminversion'] = extension_loaded('libxml') && version_compare(LIBXML_DOTTED_VERSION, '2.6.30', '>=');
return $detected;
}
function detect_cc_format ($xml_file) {
$inpos = 0;
$xml_snippet = file_get_contents($xml_file, 0, NULL, 0, 500);
if (!empty($xml_snippet)) {
$xml_snippet = strtolower($xml_snippet);
$xml_snippet = preg_replace('/\s*/m', '', $xml_snippet);
$xml_snippet = str_replace("'", '', $xml_snippet);
$xml_snippet = str_replace('"', '', $xml_snippet);
$search_string = "xmlns=" . NS_COMMON_CARTRIDGE;
$inpos = strpos($xml_snippet, $search_string);
if ($inpos) {
return true;
} else {
return false;
}
} else {
return false;
}
}