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956 lines
53 KiB
956 lines
53 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* functions used by SCORM 1.2/2004 packages.
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*
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* @package mod_scorm
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* @copyright 1999 onwards Roberto Pinna
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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function scorm_get_resources($blocks) {
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$resources = array();
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foreach ($blocks as $block) {
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if ($block['name'] == 'RESOURCES' && isset($block['children'])) {
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foreach ($block['children'] as $resource) {
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if ($resource['name'] == 'RESOURCE') {
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$resources[addslashes_js($resource['attrs']['IDENTIFIER'])] = $resource['attrs'];
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}
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}
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}
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}
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return $resources;
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}
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function scorm_get_manifest($blocks, $scoes) {
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global $OUTPUT;
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static $parents = array();
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static $resources;
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static $manifest;
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static $organization;
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$manifestresourcesnotfound = array();
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if (count($blocks) > 0) {
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foreach ($blocks as $block) {
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switch ($block['name']) {
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case 'METADATA':
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if (isset($block['children'])) {
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foreach ($block['children'] as $metadata) {
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if ($metadata['name'] == 'SCHEMAVERSION') {
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if (empty($scoes->version)) {
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$isversionset = (preg_match("/^(1\.2)$|^(CAM )?(1\.3)$/", $metadata['tagData'], $matches));
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if (isset($metadata['tagData']) && $isversionset) {
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$scoes->version = 'SCORM_'.$matches[count($matches) - 1];
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} else {
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$isversionset = (preg_match("/^2004 (3rd|4th) Edition$/", $metadata['tagData'], $matches));
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if (isset($metadata['tagData']) && $isversionset) {
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$scoes->version = 'SCORM_1.3';
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} else {
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$scoes->version = 'SCORM_1.2';
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}
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}
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}
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}
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}
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}
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break;
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case 'MANIFEST':
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$manifest = $block['attrs']['IDENTIFIER'];
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$organization = '';
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$resources = array();
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$resources = scorm_get_resources($block['children']);
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$scoes = scorm_get_manifest($block['children'], $scoes);
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if (empty($scoes->elements) || count($scoes->elements) <= 0) {
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foreach ($resources as $item => $resource) {
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if (!empty($resource['HREF'])) {
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$sco = new stdClass();
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$sco->identifier = $item;
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$sco->title = $item;
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$sco->parent = '/';
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$sco->launch = $resource['HREF'];
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$sco->scormtype = $resource['ADLCP:SCORMTYPE'];
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$scoes->elements[$manifest][$organization][$item] = $sco;
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}
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}
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}
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break;
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case 'ORGANIZATIONS':
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if (!isset($scoes->defaultorg) && isset($block['attrs']['DEFAULT'])) {
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$scoes->defaultorg = $block['attrs']['DEFAULT'];
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}
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if (!empty($block['children'])) {
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$scoes = scorm_get_manifest($block['children'], $scoes);
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}
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break;
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case 'ORGANIZATION':
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$identifier = $block['attrs']['IDENTIFIER'];
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$organization = '';
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$scoes->elements[$manifest][$organization][$identifier] = new stdClass();
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$scoes->elements[$manifest][$organization][$identifier]->identifier = $identifier;
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$scoes->elements[$manifest][$organization][$identifier]->parent = '/';
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$scoes->elements[$manifest][$organization][$identifier]->launch = '';
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$scoes->elements[$manifest][$organization][$identifier]->scormtype = '';
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$parents = array();
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$parent = new stdClass();
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$parent->identifier = $identifier;
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$parent->organization = $organization;
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array_push($parents, $parent);
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$organization = $identifier;
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if (!empty($block['children'])) {
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$scoes = scorm_get_manifest($block['children'], $scoes);
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}
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array_pop($parents);
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break;
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case 'ITEM':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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$identifier = $block['attrs']['IDENTIFIER'];
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$scoes->elements[$manifest][$organization][$identifier] = new stdClass();
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$scoes->elements[$manifest][$organization][$identifier]->identifier = $identifier;
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$scoes->elements[$manifest][$organization][$identifier]->parent = $parent->identifier;
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if (!isset($block['attrs']['ISVISIBLE'])) {
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$block['attrs']['ISVISIBLE'] = 'true';
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}
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$scoes->elements[$manifest][$organization][$identifier]->isvisible = $block['attrs']['ISVISIBLE'];
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if (!isset($block['attrs']['PARAMETERS'])) {
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$block['attrs']['PARAMETERS'] = '';
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}
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$scoes->elements[$manifest][$organization][$identifier]->parameters = $block['attrs']['PARAMETERS'];
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if (!isset($block['attrs']['IDENTIFIERREF'])) {
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$scoes->elements[$manifest][$organization][$identifier]->launch = '';
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$scoes->elements[$manifest][$organization][$identifier]->scormtype = 'asset';
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} else {
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$idref = addslashes_js($block['attrs']['IDENTIFIERREF']);
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$base = '';
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if (isset($resources[$idref]['XML:BASE'])) {
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$base = $resources[$idref]['XML:BASE'];
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}
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if (!isset($resources[$idref])) {
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$manifestresourcesnotfound[] = $idref;
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$scoes->elements[$manifest][$organization][$identifier]->launch = '';
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} else {
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$scoes->elements[$manifest][$organization][$identifier]->launch = $base.$resources[$idref]['HREF'];
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if (empty($resources[$idref]['ADLCP:SCORMTYPE'])) {
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$resources[$idref]['ADLCP:SCORMTYPE'] = 'asset';
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}
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$scoes->elements[$manifest][$organization][$identifier]->scormtype = $resources[$idref]['ADLCP:SCORMTYPE'];
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}
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}
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$parent = new stdClass();
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$parent->identifier = $identifier;
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$parent->organization = $organization;
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array_push($parents, $parent);
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if (!empty($block['children'])) {
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$scoes = scorm_get_manifest($block['children'], $scoes);
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}
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array_pop($parents);
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break;
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case 'TITLE':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!isset($block['tagData'])) {
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$block['tagData'] = '';
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}
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->title = $block['tagData'];
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break;
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case 'ADLCP:PREREQUISITES':
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if ($block['attrs']['TYPE'] == 'aicc_script') {
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!isset($block['tagData'])) {
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$block['tagData'] = '';
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}
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->prerequisites = $block['tagData'];
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}
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break;
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case 'ADLCP:MAXTIMEALLOWED':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!isset($block['tagData'])) {
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$block['tagData'] = '';
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}
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->maxtimeallowed = $block['tagData'];
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break;
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case 'ADLCP:TIMELIMITACTION':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!isset($block['tagData'])) {
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$block['tagData'] = '';
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}
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->timelimitaction = $block['tagData'];
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break;
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case 'ADLCP:DATAFROMLMS':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!isset($block['tagData'])) {
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$block['tagData'] = '';
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}
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->datafromlms = $block['tagData'];
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break;
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case 'ADLCP:MASTERYSCORE':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!isset($block['tagData'])) {
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$block['tagData'] = '';
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}
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->masteryscore = $block['tagData'];
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break;
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case 'ADLCP:COMPLETIONTHRESHOLD':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!isset($block['attrs']['MINPROGRESSMEASURE'])) {
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$block['attrs']['MINPROGRESSMEASURE'] = '1.0';
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}
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->threshold = $block['attrs']['MINPROGRESSMEASURE'];
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break;
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case 'ADLNAV:PRESENTATION':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!empty($block['children'])) {
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foreach ($block['children'] as $adlnav) {
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if ($adlnav['name'] == 'ADLNAV:NAVIGATIONINTERFACE') {
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foreach ($adlnav['children'] as $adlnavinterface) {
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if ($adlnavinterface['name'] == 'ADLNAV:HIDELMSUI') {
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if ($adlnavinterface['tagData'] == 'continue') {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hidecontinue = 1;
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}
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if ($adlnavinterface['tagData'] == 'previous') {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideprevious = 1;
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}
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if ($adlnavinterface['tagData'] == 'exit') {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideexit = 1;
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}
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if ($adlnavinterface['tagData'] == 'exitAll') {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideexitall = 1;
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}
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if ($adlnavinterface['tagData'] == 'abandon') {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideabandon = 1;
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}
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if ($adlnavinterface['tagData'] == 'abandonAll') {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideabandonall = 1;
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}
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if ($adlnavinterface['tagData'] == 'suspendAll') {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hidesuspendall = 1;
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}
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}
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}
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}
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}
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}
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break;
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case 'IMSSS:SEQUENCING':
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$parent = array_pop($parents);
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array_push($parents, $parent);
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if (!empty($block['children'])) {
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foreach ($block['children'] as $sequencing) {
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if ($sequencing['name'] == 'IMSSS:CONTROLMODE') {
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if (isset($sequencing['attrs']['CHOICE'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->choice =
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$sequencing['attrs']['CHOICE'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['CHOICEEXIT'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->choiceexit =
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$sequencing['attrs']['CHOICEEXIT'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['FLOW'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->flow =
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$sequencing['attrs']['FLOW'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['FORWARDONLY'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->forwardonly =
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$sequencing['attrs']['FORWARDONLY'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['USECURRENTATTEMPTOBJECTINFO'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->usecurrentattemptobjectinfo =
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$sequencing['attrs']['USECURRENTATTEMPTOBJECTINFO'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['USECURRENTATTEMPTPROGRESSINFO'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->usecurrentattemptprogressinfo =
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$sequencing['attrs']['USECURRENTATTEMPTPROGRESSINFO'] == 'true' ? 1 : 0;
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}
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}
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if ($sequencing['name'] == 'IMSSS:DELIVERYCONTROLS') {
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if (isset($sequencing['attrs']['TRACKED'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->tracked =
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$sequencing['attrs']['TRACKED'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['COMPLETIONSETBYCONTENT'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->completionsetbycontent =
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$sequencing['attrs']['COMPLETIONSETBYCONTENT'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['OBJECTIVESETBYCONTENT'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectivesetbycontent =
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$sequencing['attrs']['OBJECTIVESETBYCONTENT'] == 'true' ? 1 : 0;
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}
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}
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if ($sequencing['name'] == 'ADLSEQ:CONSTRAINEDCHOICECONSIDERATIONS') {
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if (isset($sequencing['attrs']['CONSTRAINCHOICE'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->constrainChoice =
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$sequencing['attrs']['CONSTRAINCHOICE'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['PREVENTACTIVATION'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->preventactivation =
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$sequencing['attrs']['PREVENTACTIVATION'] == 'true' ? 1 : 0;
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}
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}
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if ($sequencing['name'] == 'IMSSS:OBJECTIVES') {
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$objectives = array();
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foreach ($sequencing['children'] as $objective) {
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$objectivedata = new stdClass();
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$objectivedata->primaryobj = 0;
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switch ($objective['name']) {
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case 'IMSSS:PRIMARYOBJECTIVE':
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$objectivedata->primaryobj = 1;
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case 'IMSSS:OBJECTIVE':
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$objectivedata->satisfiedbymeasure = 0;
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if (isset($objective['attrs']['SATISFIEDBYMEASURE'])) {
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$objectivedata->satisfiedbymeasure =
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$objective['attrs']['SATISFIEDBYMEASURE'] == 'true' ? 1 : 0;
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}
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$objectivedata->objectiveid = '';
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if (isset($objective['attrs']['OBJECTIVEID'])) {
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$objectivedata->objectiveid = $objective['attrs']['OBJECTIVEID'];
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}
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$objectivedata->minnormalizedmeasure = 1.0;
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if (!empty($objective['children'])) {
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$mapinfos = array();
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foreach ($objective['children'] as $objectiveparam) {
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if ($objectiveparam['name'] == 'IMSSS:MINNORMALIZEDMEASURE') {
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if (isset($objectiveparam['tagData'])) {
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$objectivedata->minnormalizedmeasure = $objectiveparam['tagData'];
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} else {
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$objectivedata->minnormalizedmeasure = 0;
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}
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}
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if ($objectiveparam['name'] == 'IMSSS:MAPINFO') {
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$mapinfo = new stdClass();
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$mapinfo->targetobjectiveid = '';
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if (isset($objectiveparam['attrs']['TARGETOBJECTIVEID'])) {
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$mapinfo->targetobjectiveid =
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$objectiveparam['attrs']['TARGETOBJECTIVEID'];
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}
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$mapinfo->readsatisfiedstatus = 1;
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if (isset($objectiveparam['attrs']['READSATISFIEDSTATUS'])) {
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$mapinfo->readsatisfiedstatus =
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$objectiveparam['attrs']['READSATISFIEDSTATUS'] == 'true' ? 1 : 0;
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}
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$mapinfo->writesatisfiedstatus = 0;
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if (isset($objectiveparam['attrs']['WRITESATISFIEDSTATUS'])) {
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$mapinfo->writesatisfiedstatus =
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$objectiveparam['attrs']['WRITESATISFIEDSTATUS'] == 'true' ? 1 : 0;
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}
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$mapinfo->readnormalizemeasure = 1;
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if (isset($objectiveparam['attrs']['READNORMALIZEDMEASURE'])) {
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$mapinfo->readnormalizemeasure =
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$objectiveparam['attrs']['READNORMALIZEDMEASURE'] == 'true' ? 1 : 0;
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}
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$mapinfo->writenormalizemeasure = 0;
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if (isset($objectiveparam['attrs']['WRITENORMALIZEDMEASURE'])) {
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$mapinfo->writenormalizemeasure =
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$objectiveparam['attrs']['WRITENORMALIZEDMEASURE'] == 'true' ? 1 : 0;
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}
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array_push($mapinfos, $mapinfo);
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}
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}
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if (!empty($mapinfos)) {
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$objectivesdata->mapinfos = $mapinfos;
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}
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}
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break;
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}
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array_push($objectives, $objectivedata);
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}
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectives = $objectives;
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}
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if ($sequencing['name'] == 'IMSSS:LIMITCONDITIONS') {
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if (isset($sequencing['attrs']['ATTEMPTLIMIT'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->attemptLimit =
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$sequencing['attrs']['ATTEMPTLIMIT'];
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}
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if (isset($sequencing['attrs']['ATTEMPTABSOLUTEDURATIONLIMIT'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->attemptAbsoluteDurationLimit =
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$sequencing['attrs']['ATTEMPTABSOLUTEDURATIONLIMIT'];
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}
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}
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if ($sequencing['name'] == 'IMSSS:ROLLUPRULES') {
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if (isset($sequencing['attrs']['ROLLUPOBJECTIVESATISFIED'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->rollupobjectivesatisfied =
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$sequencing['attrs']['ROLLUPOBJECTIVESATISFIED'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['ROLLUPPROGRESSCOMPLETION'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->rollupprogresscompletion =
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$sequencing['attrs']['ROLLUPPROGRESSCOMPLETION'] == 'true' ? 1 : 0;
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}
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if (isset($sequencing['attrs']['OBJECTIVEMEASUREWEIGHT'])) {
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$scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectivemeasureweight =
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$sequencing['attrs']['OBJECTIVEMEASUREWEIGHT'];
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}
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if (!empty($sequencing['children'])) {
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$rolluprules = array();
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foreach ($sequencing['children'] as $sequencingrolluprule) {
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if ($sequencingrolluprule['name'] == 'IMSSS:ROLLUPRULE' ) {
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$rolluprule = new stdClass();
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$rolluprule->childactivityset = 'all';
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if (isset($sequencingrolluprule['attrs']['CHILDACTIVITYSET'])) {
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$rolluprule->childactivityset = $sequencingrolluprule['attrs']['CHILDACTIVITYSET'];
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}
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$rolluprule->minimumcount = 0;
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if (isset($sequencingrolluprule['attrs']['MINIMUMCOUNT'])) {
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$rolluprule->minimumcount = $sequencingrolluprule['attrs']['MINIMUMCOUNT'];
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}
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$rolluprule->minimumpercent = 0.0000;
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if (isset($sequencingrolluprule['attrs']['MINIMUMPERCENT'])) {
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$rolluprule->minimumpercent = $sequencingrolluprule['attrs']['MINIMUMPERCENT'];
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}
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if (!empty($sequencingrolluprule['children'])) {
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foreach ($sequencingrolluprule['children'] as $rolluproleconditions) {
|
|
if ($rolluproleconditions['name'] == 'IMSSS:ROLLUPCONDITIONS') {
|
|
$conditions = array();
|
|
$rolluprule->conditioncombination = 'all';
|
|
if (isset($rolluproleconditions['attrs']['CONDITIONCOMBINATION'])) {
|
|
$rolluprule->CONDITIONCOMBINATION = $rolluproleconditions['attrs']['CONDITIONCOMBINATION'];
|
|
}
|
|
foreach ($rolluproleconditions['children'] as $rolluprulecondition) {
|
|
if ($rolluprulecondition['name'] == 'IMSSS:ROLLUPCONDITION') {
|
|
$condition = new stdClass();
|
|
if (isset($rolluprulecondition['attrs']['CONDITION'])) {
|
|
$condition->cond = $rolluprulecondition['attrs']['CONDITION'];
|
|
}
|
|
$condition->operator = 'noOp';
|
|
if (isset($rolluprulecondition['attrs']['OPERATOR'])) {
|
|
$condition->operator = $rolluprulecondition['attrs']['OPERATOR'];
|
|
}
|
|
array_push($conditions, $condition);
|
|
}
|
|
}
|
|
$rolluprule->conditions = $conditions;
|
|
}
|
|
if ($rolluproleconditions['name'] == 'IMSSS:ROLLUPACTION') {
|
|
$rolluprule->rollupruleaction = $rolluproleconditions['attrs']['ACTION'];
|
|
}
|
|
}
|
|
}
|
|
array_push($rolluprules, $rolluprule);
|
|
}
|
|
}
|
|
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->rolluprules = $rolluprules;
|
|
}
|
|
}
|
|
|
|
if ($sequencing['name'] == 'IMSSS:SEQUENCINGRULES') {
|
|
if (!empty($sequencing['children'])) {
|
|
$sequencingrules = array();
|
|
foreach ($sequencing['children'] as $conditionrules) {
|
|
$conditiontype = -1;
|
|
switch($conditionrules['name']) {
|
|
case 'IMSSS:PRECONDITIONRULE':
|
|
$conditiontype = 0;
|
|
break;
|
|
case 'IMSSS:POSTCONDITIONRULE':
|
|
$conditiontype = 1;
|
|
break;
|
|
case 'IMSSS:EXITCONDITIONRULE':
|
|
$conditiontype = 2;
|
|
break;
|
|
}
|
|
if (!empty($conditionrules['children'])) {
|
|
$sequencingrule = new stdClass();
|
|
foreach ($conditionrules['children'] as $conditionrule) {
|
|
if ($conditionrule['name'] == 'IMSSS:RULECONDITIONS') {
|
|
$ruleconditions = array();
|
|
$sequencingrule->conditioncombination = 'all';
|
|
if (isset($conditionrule['attrs']['CONDITIONCOMBINATION'])) {
|
|
$sequencingrule->conditioncombination = $conditionrule['attrs']['CONDITIONCOMBINATION'];
|
|
}
|
|
foreach ($conditionrule['children'] as $rulecondition) {
|
|
if ($rulecondition['name'] == 'IMSSS:RULECONDITION') {
|
|
$condition = new stdClass();
|
|
if (isset($rulecondition['attrs']['CONDITION'])) {
|
|
$condition->cond = $rulecondition['attrs']['CONDITION'];
|
|
}
|
|
$condition->operator = 'noOp';
|
|
if (isset($rulecondition['attrs']['OPERATOR'])) {
|
|
$condition->operator = $rulecondition['attrs']['OPERATOR'];
|
|
}
|
|
$condition->measurethreshold = 0.0000;
|
|
if (isset($rulecondition['attrs']['MEASURETHRESHOLD'])) {
|
|
$condition->measurethreshold = $rulecondition['attrs']['MEASURETHRESHOLD'];
|
|
}
|
|
$condition->referencedobjective = '';
|
|
if (isset($rulecondition['attrs']['REFERENCEDOBJECTIVE'])) {
|
|
$condition->referencedobjective = $rulecondition['attrs']['REFERENCEDOBJECTIVE'];
|
|
}
|
|
array_push($ruleconditions, $condition);
|
|
}
|
|
}
|
|
$sequencingrule->ruleconditions = $ruleconditions;
|
|
}
|
|
if ($conditionrule['name'] == 'IMSSS:RULEACTION') {
|
|
$sequencingrule->action = $conditionrule['attrs']['ACTION'];
|
|
}
|
|
$sequencingrule->type = $conditiontype;
|
|
}
|
|
array_push($sequencingrules, $sequencingrule);
|
|
}
|
|
}
|
|
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->sequencingrules = $sequencingrules;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!empty($manifestresourcesnotfound)) {
|
|
// Throw warning to user to let them know manifest contains references to resources that don't appear to exist.
|
|
if (!defined('DEBUGGING_PRINTED')) {
|
|
// Prevent redirect and display warning.
|
|
define('DEBUGGING_PRINTED', 1);
|
|
}
|
|
echo $OUTPUT->notification(get_string('invalidmanifestresource', 'scorm').' '. implode(', ', $manifestresourcesnotfound));
|
|
}
|
|
return $scoes;
|
|
}
|
|
|
|
/**
|
|
* Sets up SCORM 1.2/2004 packages using the manifest file.
|
|
* Called whenever SCORM changes
|
|
* @param object $scorm instance - fields are updated and changes saved into database
|
|
* @param stored_file|string $manifest - path to manifest file or stored_file.
|
|
* @return bool
|
|
*/
|
|
function scorm_parse_scorm(&$scorm, $manifest) {
|
|
global $CFG, $DB;
|
|
|
|
// Load manifest into string.
|
|
if ($manifest instanceof stored_file) {
|
|
$xmltext = $manifest->get_content();
|
|
} else {
|
|
require_once("$CFG->libdir/filelib.php");
|
|
$xmltext = download_file_content($manifest);
|
|
}
|
|
|
|
$defaultorgid = 0;
|
|
$firstinorg = 0;
|
|
|
|
$pattern = '/&(?!\w{2,6};)/';
|
|
$replacement = '&';
|
|
$xmltext = preg_replace($pattern, $replacement, $xmltext);
|
|
|
|
$objxml = new xml2Array();
|
|
$manifests = $objxml->parse($xmltext);
|
|
$scoes = new stdClass();
|
|
$scoes->version = '';
|
|
$scoes = scorm_get_manifest($manifests, $scoes);
|
|
$newscoes = array();
|
|
$sortorder = 0;
|
|
if (count($scoes->elements) > 0) {
|
|
$olditems = $DB->get_records('scorm_scoes', array('scorm' => $scorm->id));
|
|
foreach ($scoes->elements as $manifest => $organizations) {
|
|
foreach ($organizations as $organization => $items) {
|
|
foreach ($items as $identifier => $item) {
|
|
$sortorder++;
|
|
// This new db mngt will support all SCORM future extensions.
|
|
$newitem = new stdClass();
|
|
$newitem->scorm = $scorm->id;
|
|
$newitem->manifest = $manifest;
|
|
$newitem->organization = $organization;
|
|
$newitem->sortorder = $sortorder;
|
|
$standarddatas = array('parent', 'identifier', 'launch', 'scormtype', 'title');
|
|
foreach ($standarddatas as $standarddata) {
|
|
if (isset($item->$standarddata)) {
|
|
$newitem->$standarddata = $item->$standarddata;
|
|
} else {
|
|
$newitem->$standarddata = '';
|
|
}
|
|
}
|
|
|
|
if (!empty($defaultorgid) && !empty($scoes->defaultorg) && empty($firstinorg) &&
|
|
$newitem->parent == $scoes->defaultorg) {
|
|
|
|
$firstinorg = $sortorder;
|
|
}
|
|
|
|
if (!empty($olditems) && ($olditemid = scorm_array_search('identifier', $newitem->identifier, $olditems))) {
|
|
$newitem->id = $olditemid;
|
|
// Update the Sco sortorder but keep id so that user tracks are kept against the same ids.
|
|
$DB->update_record('scorm_scoes', $newitem);
|
|
$id = $olditemid;
|
|
// Remove all old data so we don't duplicate it.
|
|
$DB->delete_records('scorm_scoes_data', array('scoid' => $olditemid));
|
|
$DB->delete_records('scorm_seq_objective', array('scoid' => $olditemid));
|
|
$DB->delete_records('scorm_seq_mapinfo', array('scoid' => $olditemid));
|
|
$DB->delete_records('scorm_seq_ruleconds', array('scoid' => $olditemid));
|
|
$DB->delete_records('scorm_seq_rulecond', array('scoid' => $olditemid));
|
|
$DB->delete_records('scorm_seq_rolluprule', array('scoid' => $olditemid));
|
|
$DB->delete_records('scorm_seq_rolluprulecond', array('scoid' => $olditemid));
|
|
|
|
// Now remove this SCO from the olditems object as we have dealt with it.
|
|
unset($olditems[$olditemid]);
|
|
} else {
|
|
// Insert the new SCO, and retain the link between the old and new for later adjustment.
|
|
$id = $DB->insert_record('scorm_scoes', $newitem);
|
|
}
|
|
// Save this sco in memory so we can use it later.
|
|
$newscoes[$id] = $newitem;
|
|
|
|
if ($optionaldatas = scorm_optionals_data($item, $standarddatas)) {
|
|
$data = new stdClass();
|
|
$data->scoid = $id;
|
|
foreach ($optionaldatas as $optionaldata) {
|
|
if (isset($item->$optionaldata)) {
|
|
$data->name = $optionaldata;
|
|
$data->value = $item->$optionaldata;
|
|
$dataid = $DB->insert_record('scorm_scoes_data', $data);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($item->sequencingrules)) {
|
|
foreach ($item->sequencingrules as $sequencingrule) {
|
|
$rule = new stdClass();
|
|
$rule->scoid = $id;
|
|
$rule->ruletype = $sequencingrule->type;
|
|
$rule->conditioncombination = $sequencingrule->conditioncombination;
|
|
$rule->action = $sequencingrule->action;
|
|
$ruleid = $DB->insert_record('scorm_seq_ruleconds', $rule);
|
|
if (isset($sequencingrule->ruleconditions)) {
|
|
foreach ($sequencingrule->ruleconditions as $rulecondition) {
|
|
$rulecond = new stdClass();
|
|
$rulecond->scoid = $id;
|
|
$rulecond->ruleconditionsid = $ruleid;
|
|
$rulecond->referencedobjective = $rulecondition->referencedobjective;
|
|
$rulecond->measurethreshold = $rulecondition->measurethreshold;
|
|
$rulecond->operator = $rulecondition->operator;
|
|
$rulecond->cond = $rulecondition->cond;
|
|
$rulecondid = $DB->insert_record('scorm_seq_rulecond', $rulecond);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($item->rolluprules)) {
|
|
foreach ($item->rolluprules as $rolluprule) {
|
|
$rollup = new stdClass();
|
|
$rollup->scoid = $id;
|
|
$rollup->childactivityset = $rolluprule->childactivityset;
|
|
$rollup->minimumcount = $rolluprule->minimumcount;
|
|
$rollup->minimumpercent = $rolluprule->minimumpercent;
|
|
$rollup->rollupruleaction = $rolluprule->rollupruleaction;
|
|
$rollup->conditioncombination = $rolluprule->conditioncombination;
|
|
|
|
$rollupruleid = $DB->insert_record('scorm_seq_rolluprule', $rollup);
|
|
if (isset($rollup->conditions)) {
|
|
foreach ($rollup->conditions as $condition) {
|
|
$cond = new stdClass();
|
|
$cond->scoid = $rollup->scoid;
|
|
$cond->rollupruleid = $rollupruleid;
|
|
$cond->operator = $condition->operator;
|
|
$cond->cond = $condition->cond;
|
|
$conditionid = $DB->insert_record('scorm_seq_rolluprulecond', $cond);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($item->objectives)) {
|
|
foreach ($item->objectives as $objective) {
|
|
$obj = new stdClass();
|
|
$obj->scoid = $id;
|
|
$obj->primaryobj = $objective->primaryobj;
|
|
$obj->satisfiedbumeasure = $objective->satisfiedbymeasure;
|
|
$obj->objectiveid = $objective->objectiveid;
|
|
$obj->minnormalizedmeasure = trim($objective->minnormalizedmeasure);
|
|
$objectiveid = $DB->insert_record('scorm_seq_objective', $obj);
|
|
if (isset($objective->mapinfos)) {
|
|
foreach ($objective->mapinfos as $objmapinfo) {
|
|
$mapinfo = new stdClass();
|
|
$mapinfo->scoid = $id;
|
|
$mapinfo->objectiveid = $objectiveid;
|
|
$mapinfo->targetobjectiveid = $objmapinfo->targetobjectiveid;
|
|
$mapinfo->readsatisfiedstatus = $objmapinfo->readsatisfiedstatus;
|
|
$mapinfo->writesatisfiedstatus = $objmapinfo->writesatisfiedstatus;
|
|
$mapinfo->readnormalizedmeasure = $objmapinfo->readnormalizedmeasure;
|
|
$mapinfo->writenormalizedmeasure = $objmapinfo->writenormalizedmeasure;
|
|
$mapinfoid = $DB->insert_record('scorm_seq_mapinfo', $mapinfo);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (empty($defaultorgid) && ((empty($scoes->defaultorg)) || ($scoes->defaultorg == $identifier))) {
|
|
$defaultorgid = $id;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!empty($olditems)) {
|
|
foreach ($olditems as $olditem) {
|
|
$DB->delete_records('scorm_scoes', array('id' => $olditem->id));
|
|
$DB->delete_records('scorm_scoes_data', array('scoid' => $olditem->id));
|
|
$DB->delete_records('scorm_scoes_track', array('scoid' => $olditem->id));
|
|
$DB->delete_records('scorm_seq_objective', array('scoid' => $olditem->id));
|
|
$DB->delete_records('scorm_seq_mapinfo', array('scoid' => $olditem->id));
|
|
$DB->delete_records('scorm_seq_ruleconds', array('scoid' => $olditem->id));
|
|
$DB->delete_records('scorm_seq_rulecond', array('scoid' => $olditem->id));
|
|
$DB->delete_records('scorm_seq_rolluprule', array('scoid' => $olditem->id));
|
|
$DB->delete_records('scorm_seq_rolluprulecond', array('scoid' => $olditem->id));
|
|
}
|
|
}
|
|
if (empty($scoes->version)) {
|
|
$scoes->version = 'SCORM_1.2';
|
|
}
|
|
$DB->set_field('scorm', 'version', $scoes->version, array('id' => $scorm->id));
|
|
$scorm->version = $scoes->version;
|
|
}
|
|
$scorm->launch = 0;
|
|
// Check launch sco is valid.
|
|
if (!empty($defaultorgid) && isset($newscoes[$defaultorgid]) && !empty($newscoes[$defaultorgid]->launch)) {
|
|
// Launch param is valid - do nothing.
|
|
$scorm->launch = $defaultorgid;
|
|
} else if (!empty($defaultorgid) && isset($newscoes[$defaultorgid]) && empty($newscoes[$defaultorgid]->launch)) {
|
|
// The launch is probably the default org so we need to find the first launchable item inside this org.
|
|
$sqlselect = 'scorm = ? AND sortorder >= ? AND '.$DB->sql_isnotempty('scorm_scoes', 'launch', false, true);
|
|
// We use get_records here as we need to pass a limit in the query that works cross db.
|
|
$scoes = $DB->get_records_select('scorm_scoes', $sqlselect, array($scorm->id, $firstinorg), 'sortorder', 'id', 0, 1);
|
|
if (!empty($scoes)) {
|
|
$sco = reset($scoes); // We only care about the first record - the above query only returns one.
|
|
$scorm->launch = $sco->id;
|
|
}
|
|
}
|
|
if (empty($scorm->launch)) {
|
|
// No valid Launch is specified - find the first launchable sco instead.
|
|
$sqlselect = 'scorm = ? AND '.$DB->sql_isnotempty('scorm_scoes', 'launch', false, true);
|
|
// We use get_records here as we need to pass a limit in the query that works cross db.
|
|
$scoes = $DB->get_records_select('scorm_scoes', $sqlselect, array($scorm->id), 'sortorder', 'id', 0, 1);
|
|
if (!empty($scoes)) {
|
|
$sco = reset($scoes); // We only care about the first record - the above query only returns one.
|
|
$scorm->launch = $sco->id;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function scorm_optionals_data($item, $standarddata) {
|
|
$result = array();
|
|
$sequencingdata = array('sequencingrules', 'rolluprules', 'objectives');
|
|
foreach ($item as $element => $value) {
|
|
if (! in_array($element, $standarddata)) {
|
|
if (! in_array($element, $sequencingdata)) {
|
|
$result[] = $element;
|
|
}
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
function scorm_is_leaf($sco) {
|
|
global $DB;
|
|
|
|
if ($DB->record_exists('scorm_scoes', array('scorm' => $sco->scorm, 'parent' => $sco->identifier))) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function scorm_get_parent($sco) {
|
|
global $DB;
|
|
|
|
if ($sco->parent != '/') {
|
|
if ($parent = $DB->get_record('scorm_scoes', array('scorm' => $sco->scorm, 'identifier' => $sco->parent))) {
|
|
return scorm_get_sco($parent->id);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function scorm_get_children($sco) {
|
|
global $DB;
|
|
|
|
$children = $DB->get_records('scorm_scoes', array('scorm' => $sco->scorm, 'parent' => $sco->identifier), 'sortorder, id');
|
|
if (!empty($children)) {
|
|
return $children;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function scorm_get_available_children($sco) {
|
|
global $DB;
|
|
|
|
$res = $DB->get_records('scorm_scoes', array('scorm' => $sco->scorm, 'parent' => $sco->identifier), 'sortorder, id');
|
|
if (!$res || $res == null) {
|
|
return false;
|
|
} else {
|
|
foreach ($res as $sco) {
|
|
$result[] = $sco;
|
|
}
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
function scorm_get_available_descendent($descend = array(), $sco) {
|
|
if ($sco == null) {
|
|
return $descend;
|
|
} else {
|
|
$avchildren = scorm_get_available_children($sco);
|
|
foreach ($avchildren as $avchild) {
|
|
array_push($descend, $avchild);
|
|
}
|
|
foreach ($avchildren as $avchild) {
|
|
scorm_get_available_descendent($descend, $avchild);
|
|
}
|
|
}
|
|
}
|
|
|
|
function scorm_get_siblings($sco) {
|
|
global $DB;
|
|
|
|
if ($siblings = $DB->get_records('scorm_scoes', array('scorm' => $sco->scorm, 'parent' => $sco->parent), 'sortorder, id')) {
|
|
unset($siblings[$sco->id]);
|
|
if (!empty($siblings)) {
|
|
return $siblings;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
// Get an array that contains all the parent scos for this sco.
|
|
function scorm_get_ancestors($sco) {
|
|
$ancestors = array();
|
|
$continue = true;
|
|
while ($continue) {
|
|
$ancestor = scorm_get_parent($sco);
|
|
if (!empty($ancestor) && $ancestor->id !== $sco->id) {
|
|
$sco = $ancestor;
|
|
$ancestors[] = $ancestor;
|
|
if ($sco->parent == '/') {
|
|
$continue = false;
|
|
}
|
|
} else {
|
|
$continue = false;
|
|
}
|
|
}
|
|
return $ancestors;
|
|
}
|
|
|
|
function scorm_get_preorder(&$preorder = array(), $sco = null) {
|
|
if ($sco != null) {
|
|
array_push($preorder, $sco);
|
|
if ($children = scorm_get_children($sco)) {
|
|
foreach ($children as $child) {
|
|
scorm_get_preorder($preorder, $child);
|
|
}
|
|
}
|
|
}
|
|
return $preorder;
|
|
}
|
|
|
|
function scorm_find_common_ancestor($ancestors, $sco) {
|
|
$pos = scorm_array_search('identifier', $sco->parent, $ancestors);
|
|
if ($sco->parent != '/') {
|
|
if ($pos === false) {
|
|
return scorm_find_common_ancestor($ancestors, scorm_get_parent($sco));
|
|
}
|
|
}
|
|
return $pos;
|
|
}
|
|
|
|
/* Usage
|
|
Grab some XML data, either from a file, URL, etc. however you want. Assume storage in $strYourXML;
|
|
|
|
$objXML = new xml2Array();
|
|
$arroutput = $objXML->parse($strYourXML);
|
|
print_r($arroutput); //print it out, or do whatever!
|
|
|
|
*/
|
|
class xml2Array {
|
|
|
|
public $arroutput = array();
|
|
public $resparser;
|
|
public $strxmldata;
|
|
|
|
/**
|
|
* Convert a utf-8 string to html entities
|
|
*
|
|
* @param string $str The UTF-8 string
|
|
* @return string
|
|
*/
|
|
public function utf8_to_entities($str) {
|
|
global $CFG;
|
|
|
|
$entities = '';
|
|
$values = array();
|
|
$lookingfor = 1;
|
|
|
|
return $str;
|
|
}
|
|
|
|
/**
|
|
* Parse an XML text string and create an array tree that rapresent the XML structure
|
|
*
|
|
* @param string $strinputxml The XML string
|
|
* @return array
|
|
*/
|
|
public function parse($strinputxml) {
|
|
$this->resparser = xml_parser_create ('UTF-8');
|
|
xml_set_object($this->resparser, $this);
|
|
xml_set_element_handler($this->resparser, "tagopen", "tagclosed");
|
|
|
|
xml_set_character_data_handler($this->resparser, "tagdata");
|
|
|
|
$this->strxmldata = xml_parse($this->resparser, $strinputxml );
|
|
if (!$this->strxmldata) {
|
|
die(sprintf("XML error: %s at line %d",
|
|
xml_error_string(xml_get_error_code($this->resparser)),
|
|
xml_get_current_line_number($this->resparser)));
|
|
}
|
|
|
|
xml_parser_free($this->resparser);
|
|
|
|
return $this->arroutput;
|
|
}
|
|
|
|
public function tagopen($parser, $name, $attrs) {
|
|
$tag = array("name" => $name, "attrs" => $attrs);
|
|
array_push($this->arroutput, $tag);
|
|
}
|
|
|
|
public function tagdata($parser, $tagdata) {
|
|
if (trim($tagdata)) {
|
|
if (isset($this->arroutput[count($this->arroutput) - 1]['tagData'])) {
|
|
$this->arroutput[count($this->arroutput) - 1]['tagData'] .= $this->utf8_to_entities($tagdata);
|
|
} else {
|
|
$this->arroutput[count($this->arroutput) - 1]['tagData'] = $this->utf8_to_entities($tagdata);
|
|
}
|
|
}
|
|
}
|
|
|
|
public function tagclosed($parser, $name) {
|
|
$this->arroutput[count($this->arroutput) - 2]['children'][] = $this->arroutput[count($this->arroutput) - 1];
|
|
array_pop($this->arroutput);
|
|
}
|
|
|
|
}
|
|
|