feature: Add xsd files, updated namespaces, new qti3 validator and be…

…tter check for qti names

model/Export/Qti3Package/Exporter.php

@@ -84,16 +84,12 @@ protected function itemContentPostProcessing($content): string
         $dom = new DOMDocument('1.0', 'UTF-8');
         $dom->loadXML($content);
 
-        $content = $this->transformationService->cleanNamespaces($content);
-
-        $dom->loadXML($content);
-
         $newDom = new DOMDocument('1.0', 'UTF-8');
         $newDom->preserveWhiteSpace = false;
         $newDom->formatOutput = true;
 
         $oldRoot = $dom->documentElement;
-        $newRoot = $newDom->createElement($this->transformationService->getElementName($oldRoot));
+        $newRoot = $newDom->createElement($this->transformationService->createQtiElementName($oldRoot->nodeName));
 
         //QTI3 namespace
         $newRoot->setAttribute('xmlns', self::QTI_SCHEMA_NAMESPACE);

model/Export/Qti3Package/Qti3SdValidator.php

@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * This program 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; under version 2
+ * of the License (non-upgradable).
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright (c) 2024 (original work) Open Assessment Technologies SA;
+ */
+
+declare(strict_types=1);
+
+namespace oat\taoQtiItem\model\Export\Qti3Package;
+
+use SimpleXMLElement;
+
+class Qti3SdValidator
+{
+    private const LOCAL_XSD_PATH = __DIR__ . '/../../qti/data/qtiv3p0/imsqti_asiv3p0_v1p0.xsd';
+    const SCHEMA = 'http://www.w3.org/2001/XMLSchema';
+
+    private ?array $qtiElementNames = null;
+
+    public function isQtiElementName(string $elementName): bool
+    {
+        if ($this->qtiElementNames === null) {
+            $this->loadQtiElementNames();
+        }
+
+        return in_array($elementName, $this->qtiElementNames, true);
+    }
+
+    private function loadQtiElementNames(): void
+    {
+        $xml = new SimpleXMLElement(file_get_contents(self::LOCAL_XSD_PATH));
+        $xml->registerXPathNamespace('xs', self::SCHEMA);
+
+        $elements = $xml->xpath('//xs:element[@name]');
+
+        $this->qtiElementNames = [];
+        foreach ($elements as $element) {
+            $name = (string)$element['name'];
+            if (str_starts_with($name, 'qti-')) {
+                $this->qtiElementNames[] = $name;
+            }
+        }
+    }
+}

model/Export/Qti3Package/TransformationService.php

@@ -27,40 +27,22 @@
 
 class TransformationService
 {
-    private const QTI_ELEMENT_PREFIXES = [
-        'response',
-        'outcome',
-        'item',
-        'choice',
-        'simple',
-        'default',
-        'value'
-    ];
+    private Qti3SdValidator $validator;
 
-    public function transformAttributes(DOMElement $sourceElement, DOMElement $targetElement): void
+    public function __construct()
     {
-        if (!$sourceElement->hasAttributes()) {
-            return;
-        }
-
-        foreach ($sourceElement->attributes as $attribute) {
-            if (
-                !str_starts_with($attribute->nodeName, 'xmlns') &&
-                $attribute->nodeName !== 'xsi:schemaLocation'
-            ) {
-                $attrName = $this->camelToHyphen($attribute->nodeName);
-                if (!empty($attrName)) {
-                    $targetElement->setAttribute($attrName, $attribute->value);
-                }
-            }
-        }
+        $this->validator = new Qti3SdValidator();
     }
 
     public function transformChildren(DOMElement $oldElement, DOMElement $newParent, DOMDocument $newDom): void
     {
         foreach ($oldElement->childNodes as $child) {
             if ($child instanceof DOMElement) {
-                $newName = $this->isQtiElement($child->nodeName) ? $this->getElementName($child) : $child->nodeName;
+                $newName = $this->createQtiElementName($child->nodeName);
+
+                if (!$this->validator->isQtiElementName($newName)) {
+                    $newName = $child->nodeName;
+                }
 
                 $newElement = $newDom->createElement($newName);
 
@@ -79,32 +61,27 @@ public function transformChildren(DOMElement $oldElement, DOMElement $newParent,
         }
     }
 
-
-    public function getElementName(DOMElement $element): string
-    {
-        return sprintf('qti-%s', $this->camelToHyphen($element->nodeName));
-    }
-
-    public function cleanNamespaces(string $content): string
+    public function transformAttributes(DOMElement $sourceElement, DOMElement $targetElement): void
     {
-        $content = preg_replace('/\s*xmlns[^=]*="[^"]*"\s*/i', '', $content);
-        $content = preg_replace('/<([a-z0-9]+):([^>\s]+)(\s+[^>]*)?>/i', '<$2$3>', $content);
-        $content = preg_replace('/<\/[a-z0-9]+:([^>]+)>/i', '</$1>', $content);
-        return preg_replace('/\s{2,}/', ' ', $content);
-    }
+        if (!$sourceElement->hasAttributes()) {
+            return;
+        }
 
-    private function isQtiElement(string $nodeName): bool
-    {
-        foreach (self::QTI_ELEMENT_PREFIXES as $prefix) {
-            if (str_starts_with($nodeName, $prefix)) {
-                return true;
-            }
-            if (str_ends_with($nodeName, ucfirst($prefix))) {
-                return true;
+        foreach ($sourceElement->attributes as $attribute) {
+            if (!str_starts_with($attribute->nodeName, 'xmlns') 
+                && $attribute->nodeName !== 'xsi:schemaLocation'
+            ) {
+                $attrName = $this->camelToHyphen($attribute->nodeName);
+                if (!empty($attrName)) {
+                    $targetElement->setAttribute($attrName, $attribute->value);
+                }
             }
         }
+    }
 
-        return false;
+    public function createQtiElementName(string $nodeName): string
+    {
+        return sprintf('qti-%s', $this->camelToHyphen($nodeName));
     }
 
     private function camelToHyphen(string $string): string