/**
* This function analyzes the manifest. In order to perform faster, manifest entities are analyzed one-by-one (on the fly)
* during parsing and not stored into memory
* Algorithm:
* 1. Detect organization elements. Each one will consist a separate units structure inside efront
* 2. Dive inside an organization and detect item elements. Each <item> corresponds to a "unit" in efront
*
*
*
*
* @param $manifest
* @return unknown_type
*/
public static function import2($lesson, $manifest)
{
//@todo: parse $lesson
//foreach ($namespaces as $prefix => $ns) {
//$xml->registerXPathNamespace($prefix, $ns);
//}
//pr($xml -> xpath("$dfn:organizations/$dfn:organization/$dfn:item/adlcp:timeLimitAction"));
$xml = simplexml_load_file(G_SCORMPATH . 'imsmanifest.xml', 'SimpleXMLIterator');
$namespaces = $xml->getNamespaces(true);
if (isset($namespaces[""])) {
//See notes for xpath() in php.net site
$dfn = "default";
$xml->registerXPathNamespace($dfn, $namespaces[""]);
// register a prefix for that default namespace:
//$xml -> organizations -> registerXPathNamespace($dfn, $namespaces[""]); // register a prefix for that default namespace:
}
/**
* Manifest (1/1): may contain the following elements:
* - metadata (1/1)
* - organizations (1/1)
* - resources (1/1)
* - manifest
* - imsss:sequencingCollection (0/1)
* And the following attributes
* - identifier (xs:ID, m): unique identifier
* - version (xs:string, o): manifest version
* - xml:base (xs:anyURI, o): provides a relative path offset for the content file(s) contained in the manifest
*/
$manifest['identifier'] = (string) $xml->attributes()->identifier;
$manifest['version'] = (string) $xml->attributes()->version;
//@todo: handle 'xml:base'
//$manifest['xml:base'] = (string)$xml -> attributes() -> xml:base;
/**
* Metadata: may contain the following elements:
* - schema (1/1)
* - schemaversion (1/1)
* - {metadata} (0/1)
*/
$metadata['schema'] = (string) $xml->metadata->schema;
$metadata['schemaversion'] = (string) $xml->metadata->schemaversion;
//@todo: handle metadata
/*
* Organizations: may contain the following elements:
* - organization (1/M)
* And the following attributes:
* - default (xs:IDREF, m): The id of the default organization
*/
$organizations['default'] = (string) $xml->organizations->attributes();
//@todo: check that default is actually an existing organization
/*
* Organization: may contain the following elements:
* - title (1/1)
* - item (1/M)
* - metadata (0/1)
* - imsss:sequencing
* And the following attributes:
* - identifier (xs:ID, m): identifier (unique within the manifest)
* - structure (xs:string, o): Describes the shape of the organization (default: hierarchical)
* - adlseq:objectivesGlobalToSystem (xs:boolean, o): self-explanatory ;)
*/
foreach ($xml->organizations->organization as $org) {
$org->registerXPathNamespace($dfn, $namespaces[""]);
// register a prefix for that default namespace:
$id = (string) $org->attributes()->identifier;
$org->attributes()->structure ? $organization[$id]['structure'] = $org->attributes()->structure : ($organization[$id]['structure'] = 'hierarchical');
$organization[$id]['title'] = $org->attributes()->title;
//@todo: the importing may be done below existing elements, take this into account when considering $previousContentId (its initial value may not be 0)
$contentTree = new EfrontContentTree($lesson);
$previousContent = $contentTree->getLastNode() or $previousContent = array('id' => 0);
//Create the "holding" unit, an empty unit that will hold this organization's elements
$previousContent = $parentContent = EfrontUnit::createUnit(array('name' => $organization[$id]['title'], 'parent_content_ID' => 0, 'previous_content_ID' => $previousContent['id'], 'lessons_ID' => $lesson));
//Get contents of the organization
foreach ($org as $key => $value) {
/*
* Item: may contain the following elements:
* - title (1/1)
* - item 0/M
* - metadata 0/1
* - adlcp: timeLimitAction 0/1
* - adlcp: dataFromLMS 0/1
* - adlcp: completionThreshold 0/1
* - imsss:sequencing
* - adlnav:presentation
* And the following attributes:
* - identifier (xs:ID, m): a unique identifier
* - identifierref (xs:string, o): a reference to a resource
* - isvisible (xs:boolean, o): whether this item is displayed when the structure of the package is displayed or rendered (Default true)
* - parameters (xs:string, o): static parameters to be passed to the resource at launch time (max 1000 chars)
*/
if ($key == 'item') {
$itemId = (string) $value->attributes()->identifier;
//pr($value -> attributes() -> identifier);
$item = array('identifier' => $itemId, 'identifierref' => (string) $value->attributes()->identifierref, 'isvisible' => (string) $value->attributes()->isvisible, 'parameters' => (string) $value->attributes()->parameters, 'title' => (string) $value->title, 'timeLimitAction' => (string) reset($org->xpath("{$dfn}:item[@identifier='{$itemId}']/adlcp:timeLimitAction")), 'dataFromLMS' => (string) reset($org->xpath("{$dfn}:item[@identifier='{$itemId}']/adlcp:dataFromLMS")), 'completionThreshold' => (string) reset($org->xpath("{$dfn}:item[@identifier='{$itemId}']/adlcp:completionThreshold")));
//@todo:<imsss:sequencing>, <adlnav:presentation>
//@todo: nested items
//@todo: metadata
$previousContent = EfrontUnit::createUnit(array('name' => $item['title'], 'parent_content_ID' => $parentContent['id'], 'previous_content_ID' => $previousContent['id'], 'lessons_ID' => $lesson));
$items[$itemId] = $item['identifierref'];
}
}
//@todo: handle adlseq:objectivesGlobalToSystem
}
/*
* Resources: may contain the following elements:
* - resource (0/M)
* And the following attributes:
* - xml:base (xs:anyURI, o): provides a relative path offset for the content file(s)
*/
$resources = $xml->resources;
$resources->registerXPathNamespace($dfn, $namespaces[""]);
// register a prefix for that default namespace:
/*
* Resource: may contain the following elements:
* - metadata (0/1)
* - file (0/M)
* - dependency (0/M)
* And the following attributes:
* - identifier (xs:ID, m): a unique identifier
* - type (xs:string, m): the type of the resource
* - href (xs:string, o): the �entry point� or �launching point� of this resource
* - xml:base (xs:anyURI, o): a relative path offset for the files contained in the manifest
* - adlcp:scormType (xs:string, m): the type of SCORM resource ("sco" or "asset")
*/
foreach ($resources->resource as $key => $value) {
$resourceId = (string) $value->attributes()->identifier;
$resource = array('identifier' => $resourceId, 'type' => (string) $value->attributes()->type, 'href' => (string) $value->attributes()->href, 'base' => (string) $value->attributes($namespaces['xml'])->base, 'scormType' => (string) $value->attributes($namespaces['adlcp'])->scormType);
/**
* File: may contain the following elements:
* - metadata (0/1)
* And the following attributes:
* - href (xs:string, m): identifies the location of the file
*/
foreach ($value->file as $f) {
$file = array('href' => (string) $f->attributes()->href);
}
/**
* Dependency: may contain the following elements:
* <none>
* And the following attributes:
* - identifierref (xs:string, m): an identifier attribute of a resource
*/
foreach ($value->dependency as $d) {
$dependency = array('identifierref' => (string) $d->attributes()->identifierref);
}
}
//@todo: sequencingCollection
//pr($organization);
// $result = $xml -> xpath("//$dfn:manifest/$dfn:organizations/$dfn:organization");
/*
$iterator = new SimpleXMLIterator($xml -> asXML());
foreach (new RecursiveIteratorIterator($iterator, RecursiveIteratorIterator::SELF_FIRST) as $key => $value) {
}
*/
/*
//$iterator = new SimpleXMLIterator($data);
//$iterator = simplexml_load_string($data, 'SimpleXMLIterator');
*/
}