function german_stemmer($unstemmed)
{
if (!class_exists('SearchWP_GermanStemmer')) {
return $unstemmed;
}
$stemmed = SearchWP_GermanStemmer::stem($unstemmed);
return sanitize_text_field($stemmed);
}
/**
* Find R1 and R2
*/
private static function getR($word)
{
$string = str_split($word);
$arrV = array_intersect($string, self::$vowels);
self::$R1Pos = NULL;
self::$R2Pos = NULL;
// find R1/R2 positions
for ($i = 0; $i < count($string) - 1; $i++) {
if (isset($arrV[$i]) && !isset($arrV[$i + 1]) && self::$R1Pos === NULL) {
self::$R1Pos = $i + 2;
} elseif (isset($arrV[$i]) && !isset($arrV[$i + 1]) && self::$R1Pos) {
self::$R2Pos = $i + 2;
break;
}
}
if (self::$R1Pos != NULL) {
self::$R1 = substr($word, self::$R1Pos);
}
if (self::$R2Pos != NULL) {
self::$R2 = substr($word, self::$R2Pos);
}
}
