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moodle/mod/scorm/datamodels/scormlib.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/>.
/**
* functions used by SCORM 1.2/2004 packages.
*
* @package mod_scorm
* @copyright 1999 onwards Roberto Pinna
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
function scorm_get_resources($blocks) {
$resources = array();
foreach ($blocks as $block) {
if ($block['name'] == 'RESOURCES' && isset($block['children'])) {
foreach ($block['children'] as $resource) {
if ($resource['name'] == 'RESOURCE') {
$resources[addslashes_js($resource['attrs']['IDENTIFIER'])] = $resource['attrs'];
}
}
}
}
return $resources;
}
function scorm_get_manifest($blocks, $scoes) {
global $OUTPUT;
static $parents = array();
static $resources;
static $manifest;
static $organization;
$manifestresourcesnotfound = array();
if (count($blocks) > 0) {
foreach ($blocks as $block) {
switch ($block['name']) {
case 'METADATA':
if (isset($block['children'])) {
foreach ($block['children'] as $metadata) {
if ($metadata['name'] == 'SCHEMAVERSION') {
if (empty($scoes->version)) {
$isversionset = (preg_match("/^(1\.2)$|^(CAM )?(1\.3)$/", $metadata['tagData'], $matches));
if (isset($metadata['tagData']) && $isversionset) {
$scoes->version = 'SCORM_'.$matches[count($matches) - 1];
} else {
$isversionset = (preg_match("/^2004 (3rd|4th) Edition$/", $metadata['tagData'], $matches));
if (isset($metadata['tagData']) && $isversionset) {
$scoes->version = 'SCORM_1.3';
} else {
$scoes->version = 'SCORM_1.2';
}
}
}
}
}
}
break;
case 'MANIFEST':
$manifest = $block['attrs']['IDENTIFIER'];
$organization = '';
$resources = array();
$resources = scorm_get_resources($block['children']);
$scoes = scorm_get_manifest($block['children'], $scoes);
if (empty($scoes->elements) || count($scoes->elements) <= 0) {
foreach ($resources as $item => $resource) {
if (!empty($resource['HREF'])) {
$sco = new stdClass();
$sco->identifier = $item;
$sco->title = $item;
$sco->parent = '/';
$sco->launch = $resource['HREF'];
$sco->scormtype = $resource['ADLCP:SCORMTYPE'];
$scoes->elements[$manifest][$organization][$item] = $sco;
}
}
}
break;
case 'ORGANIZATIONS':
if (!isset($scoes->defaultorg) && isset($block['attrs']['DEFAULT'])) {
$scoes->defaultorg = $block['attrs']['DEFAULT'];
}
if (!empty($block['children'])) {
$scoes = scorm_get_manifest($block['children'], $scoes);
}
break;
case 'ORGANIZATION':
$identifier = $block['attrs']['IDENTIFIER'];
$organization = '';
$scoes->elements[$manifest][$organization][$identifier] = new stdClass();
$scoes->elements[$manifest][$organization][$identifier]->identifier = $identifier;
$scoes->elements[$manifest][$organization][$identifier]->parent = '/';
$scoes->elements[$manifest][$organization][$identifier]->launch = '';
$scoes->elements[$manifest][$organization][$identifier]->scormtype = '';
$parents = array();
$parent = new stdClass();
$parent->identifier = $identifier;
$parent->organization = $organization;
array_push($parents, $parent);
$organization = $identifier;
if (!empty($block['children'])) {
$scoes = scorm_get_manifest($block['children'], $scoes);
}
array_pop($parents);
break;
case 'ITEM':
$parent = array_pop($parents);
array_push($parents, $parent);
$identifier = $block['attrs']['IDENTIFIER'];
$scoes->elements[$manifest][$organization][$identifier] = new stdClass();
$scoes->elements[$manifest][$organization][$identifier]->identifier = $identifier;
$scoes->elements[$manifest][$organization][$identifier]->parent = $parent->identifier;
if (!isset($block['attrs']['ISVISIBLE'])) {
$block['attrs']['ISVISIBLE'] = 'true';
}
$scoes->elements[$manifest][$organization][$identifier]->isvisible = $block['attrs']['ISVISIBLE'];
if (!isset($block['attrs']['PARAMETERS'])) {
$block['attrs']['PARAMETERS'] = '';
}
$scoes->elements[$manifest][$organization][$identifier]->parameters = $block['attrs']['PARAMETERS'];
if (!isset($block['attrs']['IDENTIFIERREF'])) {
$scoes->elements[$manifest][$organization][$identifier]->launch = '';
$scoes->elements[$manifest][$organization][$identifier]->scormtype = 'asset';
} else {
$idref = addslashes_js($block['attrs']['IDENTIFIERREF']);
$base = '';
if (isset($resources[$idref]['XML:BASE'])) {
$base = $resources[$idref]['XML:BASE'];
}
if (!isset($resources[$idref])) {
$manifestresourcesnotfound[] = $idref;
$scoes->elements[$manifest][$organization][$identifier]->launch = '';
} else {
$scoes->elements[$manifest][$organization][$identifier]->launch = $base.$resources[$idref]['HREF'];
if (empty($resources[$idref]['ADLCP:SCORMTYPE'])) {
$resources[$idref]['ADLCP:SCORMTYPE'] = 'asset';
}
$scoes->elements[$manifest][$organization][$identifier]->scormtype = $resources[$idref]['ADLCP:SCORMTYPE'];
}
}
$parent = new stdClass();
$parent->identifier = $identifier;
$parent->organization = $organization;
array_push($parents, $parent);
if (!empty($block['children'])) {
$scoes = scorm_get_manifest($block['children'], $scoes);
}
array_pop($parents);
break;
case 'TITLE':
$parent = array_pop($parents);
array_push($parents, $parent);
if (!isset($block['tagData'])) {
$block['tagData'] = '';
}
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->title = $block['tagData'];
break;
case 'ADLCP:PREREQUISITES':
if ($block['attrs']['TYPE'] == 'aicc_script') {
$parent = array_pop($parents);
array_push($parents, $parent);
if (!isset($block['tagData'])) {
$block['tagData'] = '';
}
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->prerequisites = $block['tagData'];
}
break;
case 'ADLCP:MAXTIMEALLOWED':
$parent = array_pop($parents);
array_push($parents, $parent);
if (!isset($block['tagData'])) {
$block['tagData'] = '';
}
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->maxtimeallowed = $block['tagData'];
break;
case 'ADLCP:TIMELIMITACTION':
$parent = array_pop($parents);
array_push($parents, $parent);
if (!isset($block['tagData'])) {
$block['tagData'] = '';
}
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->timelimitaction = $block['tagData'];
break;
case 'ADLCP:DATAFROMLMS':
$parent = array_pop($parents);
array_push($parents, $parent);
if (!isset($block['tagData'])) {
$block['tagData'] = '';
}
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->datafromlms = $block['tagData'];
break;
case 'ADLCP:MASTERYSCORE':
$parent = array_pop($parents);
array_push($parents, $parent);
if (!isset($block['tagData'])) {
$block['tagData'] = '';
}
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->masteryscore = $block['tagData'];
break;
case 'ADLCP:COMPLETIONTHRESHOLD':
$parent = array_pop($parents);
array_push($parents, $parent);
if (!isset($block['attrs']['MINPROGRESSMEASURE'])) {
$block['attrs']['MINPROGRESSMEASURE'] = '1.0';
}
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->threshold = $block['attrs']['MINPROGRESSMEASURE'];
break;
case 'ADLNAV:PRESENTATION':
$parent = array_pop($parents);
array_push($parents, $parent);
if (!empty($block['children'])) {
foreach ($block['children'] as $adlnav) {
if ($adlnav['name'] == 'ADLNAV:NAVIGATIONINTERFACE') {
foreach ($adlnav['children'] as $adlnavinterface) {
if ($adlnavinterface['name'] == 'ADLNAV:HIDELMSUI') {
if ($adlnavinterface['tagData'] == 'continue') {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hidecontinue = 1;
}
if ($adlnavinterface['tagData'] == 'previous') {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideprevious = 1;
}
if ($adlnavinterface['tagData'] == 'exit') {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideexit = 1;
}
if ($adlnavinterface['tagData'] == 'exitAll') {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideexitall = 1;
}
if ($adlnavinterface['tagData'] == 'abandon') {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideabandon = 1;
}
if ($adlnavinterface['tagData'] == 'abandonAll') {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideabandonall = 1;
}
if ($adlnavinterface['tagData'] == 'suspendAll') {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->hidesuspendall = 1;
}
}
}
}
}
}
break;
case 'IMSSS:SEQUENCING':
$parent = array_pop($parents);
array_push($parents, $parent);
if (!empty($block['children'])) {
foreach ($block['children'] as $sequencing) {
if ($sequencing['name'] == 'IMSSS:CONTROLMODE') {
if (isset($sequencing['attrs']['CHOICE'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->choice =
$sequencing['attrs']['CHOICE'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['CHOICEEXIT'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->choiceexit =
$sequencing['attrs']['CHOICEEXIT'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['FLOW'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->flow =
$sequencing['attrs']['FLOW'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['FORWARDONLY'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->forwardonly =
$sequencing['attrs']['FORWARDONLY'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['USECURRENTATTEMPTOBJECTINFO'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->usecurrentattemptobjectinfo =
$sequencing['attrs']['USECURRENTATTEMPTOBJECTINFO'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['USECURRENTATTEMPTPROGRESSINFO'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->usecurrentattemptprogressinfo =
$sequencing['attrs']['USECURRENTATTEMPTPROGRESSINFO'] == 'true' ? 1 : 0;
}
}
if ($sequencing['name'] == 'IMSSS:DELIVERYCONTROLS') {
if (isset($sequencing['attrs']['TRACKED'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->tracked =
$sequencing['attrs']['TRACKED'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['COMPLETIONSETBYCONTENT'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->completionsetbycontent =
$sequencing['attrs']['COMPLETIONSETBYCONTENT'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['OBJECTIVESETBYCONTENT'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectivesetbycontent =
$sequencing['attrs']['OBJECTIVESETBYCONTENT'] == 'true' ? 1 : 0;
}
}
if ($sequencing['name'] == 'ADLSEQ:CONSTRAINEDCHOICECONSIDERATIONS') {
if (isset($sequencing['attrs']['CONSTRAINCHOICE'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->constrainChoice =
$sequencing['attrs']['CONSTRAINCHOICE'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['PREVENTACTIVATION'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->preventactivation =
$sequencing['attrs']['PREVENTACTIVATION'] == 'true' ? 1 : 0;
}
}
if ($sequencing['name'] == 'IMSSS:OBJECTIVES') {
$objectives = array();
foreach ($sequencing['children'] as $objective) {
$objectivedata = new stdClass();
$objectivedata->primaryobj = 0;
switch ($objective['name']) {
case 'IMSSS:PRIMARYOBJECTIVE':
$objectivedata->primaryobj = 1;
case 'IMSSS:OBJECTIVE':
$objectivedata->satisfiedbymeasure = 0;
if (isset($objective['attrs']['SATISFIEDBYMEASURE'])) {
$objectivedata->satisfiedbymeasure =
$objective['attrs']['SATISFIEDBYMEASURE'] == 'true' ? 1 : 0;
}
$objectivedata->objectiveid = '';
if (isset($objective['attrs']['OBJECTIVEID'])) {
$objectivedata->objectiveid = $objective['attrs']['OBJECTIVEID'];
}
$objectivedata->minnormalizedmeasure = 1.0;
if (!empty($objective['children'])) {
$mapinfos = array();
foreach ($objective['children'] as $objectiveparam) {
if ($objectiveparam['name'] == 'IMSSS:MINNORMALIZEDMEASURE') {
if (isset($objectiveparam['tagData'])) {
$objectivedata->minnormalizedmeasure = $objectiveparam['tagData'];
} else {
$objectivedata->minnormalizedmeasure = 0;
}
}
if ($objectiveparam['name'] == 'IMSSS:MAPINFO') {
$mapinfo = new stdClass();
$mapinfo->targetobjectiveid = '';
if (isset($objectiveparam['attrs']['TARGETOBJECTIVEID'])) {
$mapinfo->targetobjectiveid =
$objectiveparam['attrs']['TARGETOBJECTIVEID'];
}
$mapinfo->readsatisfiedstatus = 1;
if (isset($objectiveparam['attrs']['READSATISFIEDSTATUS'])) {
$mapinfo->readsatisfiedstatus =
$objectiveparam['attrs']['READSATISFIEDSTATUS'] == 'true' ? 1 : 0;
}
$mapinfo->writesatisfiedstatus = 0;
if (isset($objectiveparam['attrs']['WRITESATISFIEDSTATUS'])) {
$mapinfo->writesatisfiedstatus =
$objectiveparam['attrs']['WRITESATISFIEDSTATUS'] == 'true' ? 1 : 0;
}
$mapinfo->readnormalizemeasure = 1;
if (isset($objectiveparam['attrs']['READNORMALIZEDMEASURE'])) {
$mapinfo->readnormalizemeasure =
$objectiveparam['attrs']['READNORMALIZEDMEASURE'] == 'true' ? 1 : 0;
}
$mapinfo->writenormalizemeasure = 0;
if (isset($objectiveparam['attrs']['WRITENORMALIZEDMEASURE'])) {
$mapinfo->writenormalizemeasure =
$objectiveparam['attrs']['WRITENORMALIZEDMEASURE'] == 'true' ? 1 : 0;
}
array_push($mapinfos, $mapinfo);
}
}
if (!empty($mapinfos)) {
$objectivesdata->mapinfos = $mapinfos;
}
}
break;
}
array_push($objectives, $objectivedata);
}
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectives = $objectives;
}
if ($sequencing['name'] == 'IMSSS:LIMITCONDITIONS') {
if (isset($sequencing['attrs']['ATTEMPTLIMIT'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->attemptLimit =
$sequencing['attrs']['ATTEMPTLIMIT'];
}
if (isset($sequencing['attrs']['ATTEMPTABSOLUTEDURATIONLIMIT'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->attemptAbsoluteDurationLimit =
$sequencing['attrs']['ATTEMPTABSOLUTEDURATIONLIMIT'];
}
}
if ($sequencing['name'] == 'IMSSS:ROLLUPRULES') {
if (isset($sequencing['attrs']['ROLLUPOBJECTIVESATISFIED'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->rollupobjectivesatisfied =
$sequencing['attrs']['ROLLUPOBJECTIVESATISFIED'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['ROLLUPPROGRESSCOMPLETION'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->rollupprogresscompletion =
$sequencing['attrs']['ROLLUPPROGRESSCOMPLETION'] == 'true' ? 1 : 0;
}
if (isset($sequencing['attrs']['OBJECTIVEMEASUREWEIGHT'])) {
$scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectivemeasureweight =
$sequencing['attrs']['OBJECTIVEMEASUREWEIGHT'];
}
if (!empty($sequencing['children'])) {
$rolluprules = array();
foreach ($sequencing['children'] as $sequencingrolluprule) {
if ($sequencingrolluprule['name'] == 'IMSSS:ROLLUPRULE' ) {
$rolluprule = new stdClass();
$rolluprule->childactivityset = 'all';
if (isset($sequencingrolluprule['attrs']['CHILDACTIVITYSET'])) {
$rolluprule->childactivityset = $sequencingrolluprule['attrs']['CHILDACTIVITYSET'];
}
$rolluprule->minimumcount = 0;
if (isset($sequencingrolluprule['attrs']['MINIMUMCOUNT'])) {
$rolluprule->minimumcount = $sequencingrolluprule['attrs']['MINIMUMCOUNT'];
}
$rolluprule->minimumpercent = 0.0000;
if (isset($sequencingrolluprule['attrs']['MINIMUMPERCENT'])) {
$rolluprule->minimumpercent = $sequencingrolluprule['attrs']['MINIMUMPERCENT'];
}
if (!empty($sequencingrolluprule['children'])) {
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 = '&amp;';
$xmltext = preg_replace($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);
}
}