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Name	Action
..
HTMLSax3-20251221155850.php	Edit
HTMLSax3.php	Edit
Helper-20260110112257.php	Edit
Helper.php	Edit
NestingException.php	Edit
auto
bigup.loader.js	Edit
class.JavaScriptPacker-20251219225728.php	Edit
class.JavaScriptPacker-20251227163425.php	Edit
class.JavaScriptPacker.php	Edit
class.minify_html.php	Edit
extension.cache.mysql.php	Edit
jquery.twinkle.js	Edit
preparer_sql_plugin-20251222150028.php	Edit
preparer_sql_plugin.php	Edit
safehtml.php	Edit
sites_administrations-20251224104617.php	Edit
sites_administrations.php	Edit
sites_en.php	Edit
sites_fonctions.php	Edit
sites_hu.php	Edit
sites_it.php	Edit
sites_lb.php	Edit
sites_pipelines.php	Edit
spip.php	Edit

Editing: Helper-20260110112257.php

<?php
namespace enshrined\svgSanitize;

class Helper
{
    /**
     * @param \DOMElement $element
     * @return string|null
     */
    public static function getElementHref(\DOMElement $element)
    {
        if ($element->hasAttribute('href')) {
            return $element->getAttribute('href');
        }
        if ($element->hasAttributeNS('http://www.w3.org/1999/xlink', 'href')) {
            return $element->getAttributeNS('http://www.w3.org/1999/xlink', 'href');
        }
        return null;
    }

/**
     * @param string $href
     * @return string|null
     */
    public static function extractIdReferenceFromHref($href)
    {
        if (!is_string($href) || strpos($href, '#') !== 0) {
            return null;
        }
        return substr($href, 1);
    }

/**
     * @param \DOMElement $needle
     * @param \DOMElement $haystack
     * @return bool
     */
    public static function isElementContainedIn(\DOMElement $needle, \DOMElement $haystack)
    {
        if ($needle === $haystack) {
            return true;
        }
        foreach ($haystack->childNodes as $childNode) {
            if (!$childNode instanceof \DOMElement) {
                continue;
            }
            if (self::isElementContainedIn($needle, $childNode)) {
                return true;
            }
        }
        return false;
    }
}