/**
* Get slugged index
* @param string $value
* @param bool $ascii
* @return string
*/
protected function getSluggedIndex($value, $ascii = false)
{
// Get original
$separator = $this->reader->getSeparator();
// Convert to ascii when needed
if ($ascii) {
$value = $this->getAsciiIndex($value);
}
// Convert all dashes/underscores into separator
$flip = $separator == '-' ? '_' : '-';
$value = preg_replace('![' . preg_quote($flip) . ']+!u', $separator, $value);
// Remove all characters that are not the separator, letters, numbers, or whitespace.
$value = preg_replace('![^' . preg_quote($separator) . '\\pL\\pN\\s]+!u', '', mb_strtolower($value));
// Replace all separator characters and whitespace by a single separator
$value = preg_replace('![' . preg_quote($separator) . '\\s]+!u', $separator, $value);
return trim($value, $separator);
}
