Primo Committ

vendor/phar-io/manifest/src/xml/ManifestElement.php

@@ -0,0 +1,66 @@
+<?php declare(strict_types = 1);
+/*
+ * This file is part of PharIo\Manifest.
+ *
+ * (c) Arne Blankerts <arne@blankerts.de>, Sebastian Heuer <sebastian@phpeople.de>, Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace PharIo\Manifest;
+
+use DOMElement;
+use DOMNodeList;
+
+class ManifestElement {
+    public const XMLNS = 'https://phar.io/xml/manifest/1.0';
+
+    /** @var DOMElement */
+    private $element;
+
+    public function __construct(DOMElement $element) {
+        $this->element = $element;
+    }
+
+    protected function getAttributeValue(string $name): string {
+        if (!$this->element->hasAttribute($name)) {
+            throw new ManifestElementException(
+                \sprintf(
+                    'Attribute %s not set on element %s',
+                    $name,
+                    $this->element->localName
+                )
+            );
+        }
+
+        return $this->element->getAttribute($name);
+    }
+
+    protected function getChildByName(string $elementName): DOMElement {
+        $element = $this->element->getElementsByTagNameNS(self::XMLNS, $elementName)->item(0);
+
+        if (!$element instanceof DOMElement) {
+            throw new ManifestElementException(
+                \sprintf('Element %s missing', $elementName)
+            );
+        }
+
+        return $element;
+    }
+
+    protected function getChildrenByName(string $elementName): DOMNodeList {
+        $elementList = $this->element->getElementsByTagNameNS(self::XMLNS, $elementName);
+
+        if ($elementList->length === 0) {
+            throw new ManifestElementException(
+                \sprintf('Element(s) %s missing', $elementName)
+            );
+        }
+
+        return $elementList;
+    }
+
+    protected function hasChild(string $elementName): bool {
+        return $this->element->getElementsByTagNameNS(self::XMLNS, $elementName)->length !== 0;
+    }
+}