scormlib.php

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<?php
function scorm_get_resources($blocks) {
    $resources = array();
    foreach ($blocks as $block) {
        if ($block['name'] == 'RESOURCES') {
            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) {
    static $parents = array();
    static $resources;

    static $manifest;
    static $organization;

    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($scoes->version)) {
                                    if (isset($metadata['tagData']) && (preg_match("/^(1\.2)$|^(CAM )?(1\.3)$/",$metadata['tagData'],$matches))) {
                                        $scoes->version = 'SCORM_'.$matches[count($matches)-1];
                                    } else {
                                        if (isset($metadata['tagData']) && (preg_match("/^2004 3rd Edition$/",$metadata['tagData'],$matches))) {
                                            $scoes->version = 'SCORM_1.3';
                                        } else {
                                            $scoes->version = 'SCORM_1.2';
                                        }
                                    }
                                }
                            }
                        }
                    }
                break;
                case 'MANIFEST':
                    $manifest = addslashes_js($block['attrs']['IDENTIFIER']);
                    $organization = '';
                    $resources = array();
                    $resources = scorm_get_resources($block['children']);
                    $scoes = scorm_get_manifest($block['children'],$scoes);
                    if (count($scoes->elements) <= 0) {
                        foreach ($resources as $item => $resource) {
                            if (!empty($resource['HREF'])) {
                                $sco = new stdClass();
                                $sco->identifier = $item;
                                $sco->title = $item;
                                $sco->parent = '/';
                                $sco->launch = addslashes_js($resource['HREF']);
                                $sco->scormtype = addslashes_js($resource['ADLCP:SCORMTYPE']);
                                $scoes->elements[$manifest][$organization][$item] = $sco;
                            }
                        }
                    }
                break;
                case 'ORGANIZATIONS':
                    if (!isset($scoes->defaultorg) && isset($block['attrs']['DEFAULT'])) {
                        $scoes->defaultorg = addslashes_js($block['attrs']['DEFAULT']);
                    }
                    $scoes = scorm_get_manifest($block['children'],$scoes);
                break;
                case 'ORGANIZATION':
                    $identifier = addslashes_js($block['attrs']['IDENTIFIER']);
                    $organization = '';
                    $scoes->elements[$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;

                    $scoes = scorm_get_manifest($block['children'],$scoes);

                    array_pop($parents);
                break;
                case 'ITEM':
                    $parent = array_pop($parents);
                    array_push($parents, $parent);

                    $identifier = addslashes_js($block['attrs']['IDENTIFIER']);
                    $scoes->elements[$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 = addslashes_js($block['attrs']['ISVISIBLE']);
                    if (!isset($block['attrs']['PARAMETERS'])) {
                        $block['attrs']['PARAMETERS'] = '';
                    }
                    $scoes->elements[$manifest][$organization][$identifier]->parameters = addslashes_js($block['attrs']['PARAMETERS']);
                    if (!isset($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'];
                        }
                        $scoes->elements[$manifest][$organization][$identifier]->launch = addslashes_js($base.$resources[$idref]['HREF']);
                        if (empty($resources[$idref]['ADLCP:SCORMTYPE'])) {
                            $resources[$idref]['ADLCP:SCORMTYPE'] = 'asset';
                        }
                        $scoes->elements[$manifest][$organization][$identifier]->scormtype = addslashes_js($resources[$idref]['ADLCP:SCORMTYPE']);
                    }

                    $parent = new stdClass();
                    $parent->identifier = $identifier;
                    $parent->organization = $organization;
                    array_push($parents, $parent);

                    $scoes = scorm_get_manifest($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 = addslashes_js($block['tagData']);
                break;
                case 'ADLCP:PREREQUISITES':
                    if ($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 = addslashes_js($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 = addslashes_js($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 = addslashes_js($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 = addslashes_js($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 = addslashes_js($block['tagData']);
                break;
                case 'ADLCP:COMPLETIONTHRESHOLD':
                    $parent = array_pop($parents);
                    array_push($parents, $parent);
                    if (!isset($block['tagData'])) {
                        $block['tagData'] = '';
                    }
                    $scoes->elements[$manifest][$parent->organization][$parent->identifier]->threshold = addslashes_js($block['tagData']);
                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']=='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;