XPath.php

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<?php
 
namespace RobRichards\XMLSecLibs\Utils;
 
class XPath
{
    const ALPHANUMERIC = '\w\d';
    const NUMERIC = '\d';
    const LETTERS = '\w';
    const EXTENDED_ALPHANUMERIC = '\w\d\s\-_:\.';
 
    const SINGLE_QUOTE = '\'';
    const DOUBLE_QUOTE = '"';
    const ALL_QUOTES = '[\'"]';
 
 
    public static function filterAttrValue($value, $quotes = self::ALL_QUOTES)
    {
        return preg_replace('#'.$quotes.'#', '', $value);
    }
 
 
    public static function filterAttrName($name, $allow = self::EXTENDED_ALPHANUMERIC)
    {
        return preg_replace('#[^'.$allow.']#', '', $name);
    }
}