/**
* Returns the first part of $routePath that should be evaluated in matchValue().
* If no split string is set (route part is the last in the routes uriPattern), the complete $routePart is returned.
* Otherwise the part is returned that matches the specified uriPattern of this route part.
*
* @param string $routePath The request path to be matched
* @return string value to match, or an empty string if $routePath is empty, split string was not found or uriPattern could not be matched
* @api
*/
protected function findValueToMatch($routePath)
{
if (!isset($routePath) || $routePath === '' || $routePath[0] === '/') {
return '';
}
if ($this->getUriPattern() === '') {
return parent::findValueToMatch($routePath);
}
$regexPattern = preg_quote($this->getUriPattern(), '/');
$regexPattern = preg_replace('/\\\\{[^}]+\\\\}/', '[^\\/]+', $regexPattern);
if ($this->splitString !== '') {
$regexPattern .= '(?=' . preg_quote($this->splitString, '/') . ')';
}
$matches = array();
preg_match('/^' . $regexPattern . '/', trim($routePath, '/'), $matches);
return isset($matches[0]) ? $matches[0] : '';
}
