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<?php
/**
* Flight: An extensible micro-framework.
*
* @copyright Copyright (c) 2011, Mike Cao <mike@mikecao.com>
* @license MIT, http://flightphp.com/license
*/
namespace flight\net;
/**
* The Router class is responsible for routing an HTTP request to
* an assigned callback function. The Router tries to match the
* requested URL against a series of URL patterns.
*/
class Router {
/**
* Mapped routes.
*
* @var array
*/
protected $routes = array();
/**
* Pointer to current route
*
* @var int
*/
protected $index = 0;
/**
* Gets mapped routes.
*
* @return array Array of routes
*/
public function getRoutes() {
return $this->routes;
}
/**
* Clears all routes in the router.
*/
public function clear() {
$this->routes = array();
}
/**
* Maps a URL pattern to a callback function.
*
* @param string $pattern URL pattern to match
* @param callback $callback Callback function
* @param boolean $pass_route Pass the matching route object to the callback
*/
public function map($pattern, $callback, $pass_route = false) {
$url = $pattern;
$methods = array('*');
if (strpos($pattern, ' ') !== false) {
list($method, $url) = explode(' ', trim($pattern), 2);
$methods = explode('|', $method);
}
$this->routes[] = new Route($url, $callback, $methods, $pass_route);
}
/**
* Routes the current request.
*
* @param Request $request Request object
* @return Route Matching route
*/
public function route(Request $request) {
while ($route = $this->current()) {
if ($route !== false && $route->matchMethod($request->method) && $route->matchUrl($request->url)) {
return $route;
}
$this->next();
}
return false;
}
/**
* Gets the current route.
*
* @return Route
*/
public function current() {
return isset($this->routes[$this->index]) ? $this->routes[$this->index] : false;
}
/**
* Gets the next route.
*
* @return Route
*/
public function next() {
$this->index++;
}
/**
* Reset to the first route.
*/
public function reset() {
$this->index = 0;
}
}
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