Ir a la última revisión | Autoría | Comparar con el anterior | Ultima modificación | Ver Log |
<?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 = '&';$xmltext = preg_replace($pattern, $replacement, $xmltext);$objxml = new xml2Array();$manifests = $objxml->parse($xmltext);$scoes = new stdClass();$scoes->version = '';$scoes = scorm_get_manifest($manifests, $scoes);$newscoes = array();$sortorder = 0;if (!empty($scoes->elements) && is_iterable($scoes->elements)) {$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', ['id' => $olditem->id]);$DB->delete_records('scorm_scoes_data', ['scoid' => $olditem->id]);scorm_delete_tracks($scorm->id, $olditem->id);$DB->delete_records('scorm_seq_objective', ['scoid' => $olditem->id]);$DB->delete_records('scorm_seq_mapinfo', ['scoid' => $olditem->id]);$DB->delete_records('scorm_seq_ruleconds', ['scoid' => $olditem->id]);$DB->delete_records('scorm_seq_rulecond', ['scoid' => $olditem->id]);$DB->delete_records('scorm_seq_rolluprule', ['scoid' => $olditem->id]);$DB->delete_records('scorm_seq_rolluprulecond', ['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, $sco) {if ($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;}/* UsageGrab 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);}}