Method _relToAbs

/**
 * Convert links in a text from relative to absolute
 *
 * @param   string  $text  The text processed
 *
 * @return  string   Text with converted links
 *
 * @since   1.7.0
 */
protected function _relToAbs($text)
{
    $base = Uri::base();
    $text = preg_replace("/(href|src)=\"(?!http|ftp|https|mailto|data|\\/\\/)([^\"]*)\"/", "\$1=\"{$base}\$2\"", $text);
    return $text;
}