/**
* Compile path to regular expression
*
* @return $this
*/
protected function compileRegExp()
{
$exp = str_replace(array('(', ')'), array('(', ')?'), $this->content);
foreach ($this->route->getParams() as $name => $config) {
$class = isset($config['regExp']) ? $config['regExp'] : self::PARAM;
$exp = str_replace('{' . $name . '}', '(' . $class . ')', $exp);
}
$exp = ':^' . $exp . '$:u';
$this->regExp = $exp;
return $this;
}
/**
* Process route parameters
*
* @param Route $route Route
* @param array $params Passed parameters
*
* @return array
* @throws \InvalidArgumentException
*/
protected function processParams(Route $route, array $params)
{
$config = $route->getParams();
foreach ($config as $name => $data) {
// Apply default value if not specified (optional segment)
if (!array_key_exists($name, $params) && array_key_exists('default', $data)) {
$params[$name] = $data['default'];
}
// Reverse map parameter names
if (array_key_exists($name, $params) && isset($data['map'])) {
$map = $data['map'];
$value = $params[$name];
if (!is_array($map)) {
throw new \InvalidArgumentException('Route parameter map should be an array.');
}
$param = array_search($value, $map);
if ($param !== false) {
$params[$name] = $param;
}
}
}
return $params;
}