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<?php
/** Route
* ---
* Methods:
* - add( expression , callback_function , method )
* - notFound( callback_function )
* - methodNotAllowed( callback_function )
* - run()
*
* + matches static paths
* + matches dynamic paths through regex expressions
* + takes care of request-method
*/
class Route {
private static $routes = Array(); // array to host routes
private static $notFound = null; // 404 error function
private static $methodNotAllowed = null; // 404 error function
/** add (route)
* ---
* @param string $expression : static or regex matcher
* @param callback $function : function to be executed if expression is matched
* @param string $method : get / post / any
*/
public static function add( $expression, $function, $method = 'get' )
{
array_push(self::$routes, Array(
'expression' => $expression,
'function' => $function,
'method' => strtolower($method)
));
}
/** notFound($function)
* ---
* @param callback $function : callback function to be executed
*/
public static function notFound($function)
{
self::$notFound = $function;
}
/** run()
* ---
* Parse request ; Find mathing route ;
* then call route's function
* usualy a Controller::method([poarametres])
*/
public static function run(Request $request)
{
// $request = Registry::get('REQUEST');
$path = $request->PATH; // request path
$method = $request->METHOD; // request method
$path_match_found = false;
$route_match_found = false;
foreach(self::$routes as $route) {
// If method matched check the path
if ($route['method'] == $method || $method == 'any') {
// Add 'find string start' automatically
$route['expression'] = '^'.$route['expression'];
// Add 'find string end' automatically
$route['expression'] = $route['expression'].'$';
// Check path match
if (preg_match('#'. $route['expression'] .'#', $path, $matches)) {
$route_match_found = true;
array_shift($matches); // Always remove first element. This contains the whole string
call_user_func_array($route['function'], $matches);
break; // Do not check other routes
}
}
}
// No matching route was found
if (!$route_match_found) {
header("HTTP/1.0 404 Not Found");
if (self::$notFound) {
call_user_func_array(self::$notFound, []);
}
}
}
}
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