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<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Framework\Config\Dom;

/**
 * Matching of XPath expressions to path patterns
 */
class NodePathMatcher
{
    /**
     * Whether a subject XPath matches to a given path pattern
     *
     * @param string $pathPattern Example: '/some/static/path' or '/some/regexp/path(/item)+'
     * @param string $xpathSubject Example: '/some[@attr="value"]/static/ns:path'
     * @return bool
     */
    public function match($pathPattern, $xpathSubject)
    {
        $pathSubject = $this->simplifyXpath($xpathSubject);
        $pathPattern = '#^' . $pathPattern . '$#';
        return (bool)preg_match($pathPattern, $pathSubject);
    }

    /**
     * Strip off predicates and namespaces from the XPath
     *
     * @param string $xpath
     * @return string
     */
    protected function simplifyXpath($xpath)
    {
        $result = $xpath ?: '';
        $result = preg_replace('/\[@[^\]]+?\]/', '', $result);

        return preg_replace('/\/[^:]+?\:/', '/', $result);
    }
}