ElementReference
1 month ago
Exceptions
1 month ago
data
1 month ago
Helper.php
1 month ago
Sanitizer.php
1 month ago
svg-scanner.php
1 month ago
Helper.php
54 lines
| 1 | <?php |
| 2 | namespace enshrined\svgSanitize; |
| 3 | |
| 4 | class Helper |
| 5 | { |
| 6 | /** |
| 7 | * @param \DOMElement $element |
| 8 | * @return string|null |
| 9 | */ |
| 10 | public static function getElementHref(\DOMElement $element) |
| 11 | { |
| 12 | if ($element->hasAttribute('href')) { |
| 13 | return $element->getAttribute('href'); |
| 14 | } |
| 15 | if ($element->hasAttributeNS('http://www.w3.org/1999/xlink', 'href')) { |
| 16 | return $element->getAttributeNS('http://www.w3.org/1999/xlink', 'href'); |
| 17 | } |
| 18 | return null; |
| 19 | } |
| 20 | |
| 21 | /** |
| 22 | * @param string $href |
| 23 | * @return string|null |
| 24 | */ |
| 25 | public static function extractIdReferenceFromHref($href) |
| 26 | { |
| 27 | if (!is_string($href) || strpos($href, '#') !== 0) { |
| 28 | return null; |
| 29 | } |
| 30 | return substr($href, 1); |
| 31 | } |
| 32 | |
| 33 | /** |
| 34 | * @param \DOMElement $needle |
| 35 | * @param \DOMElement $haystack |
| 36 | * @return bool |
| 37 | */ |
| 38 | public static function isElementContainedIn(\DOMElement $needle, \DOMElement $haystack) |
| 39 | { |
| 40 | if ($needle === $haystack) { |
| 41 | return true; |
| 42 | } |
| 43 | foreach ($haystack->childNodes as $childNode) { |
| 44 | if (!$childNode instanceof \DOMElement) { |
| 45 | continue; |
| 46 | } |
| 47 | if (self::isElementContainedIn($needle, $childNode)) { |
| 48 | return true; |
| 49 | } |
| 50 | } |
| 51 | return false; |
| 52 | } |
| 53 | } |
| 54 |