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<?php |
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|
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namespace WindPressDeps\enshrined\svgSanitize; |
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|
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class Helper |
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{ |
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/** |
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* @param \DOMElement $element |
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* @return string|null |
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*/ |
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public static function getElementHref(\DOMElement $element) |
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{ |
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if ($element->hasAttribute('href')) { |
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return $element->getAttribute('href'); |
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} |
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if ($element->hasAttributeNS('http://www.w3.org/1999/xlink', 'href')) { |
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return $element->getAttributeNS('http://www.w3.org/1999/xlink', 'href'); |
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} |
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return null; |
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} |
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/** |
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* @param string $href |
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* @return string|null |
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*/ |
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public static function extractIdReferenceFromHref($href) |
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{ |
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if (!is_string($href) || strpos($href, '#') !== 0) { |
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return null; |
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} |
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return substr($href, 1); |
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} |
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/** |
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* @param \DOMElement $needle |
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* @param \DOMElement $haystack |
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* @return bool |
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*/ |
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public static function isElementContainedIn(\DOMElement $needle, \DOMElement $haystack) |
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{ |
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if ($needle === $haystack) { |
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return \true; |
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} |
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foreach ($haystack->childNodes as $childNode) { |
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if (!$childNode instanceof \DOMElement) { |
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continue; |
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} |
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if (self::isElementContainedIn($needle, $childNode)) { |
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return \true; |
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} |
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} |
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return \false; |
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} |
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} |
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