toro.php

<?php

class InvalidRouteType extends Exception { }

class ToroApplication {
  private $_handler_route_pairs = Array();

  public function __construct($handler_route_pairs) {
    foreach ($handler_route_pairs as $pair) {
      if ($pair[1] == "string" || $pair[1] == "regex") {
        array_push($this->_handler_route_pairs, $pair);
      }
      else {
        throw new InvalidRouteType();
      }
    }
  }

  public function serve() {
    $request_method = strtolower($_SERVER['REQUEST_METHOD']);
    $path_info = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '/';
    $discovered_handler = null;
    $regex_matches = Array();
    $method_arguments = null;

    foreach ($this->_handler_route_pairs as $handler) {
      $pattern = $handler[0];
      $pattern_type = $handler[1];
      $handler_name = $handler[2];

      // Argument overrides (must be an array)
      if (isset($handler[3])) {
        $method_arguments = $handler[3];
      }
      else {
        $method_arguments = null;
      }

      if ($pattern_type == "string" && $path_info == $pattern) {
        $discovered_handler = $handler_name;
        $regex_matches = Array($path_info, preg_replace('/^\//', '', $path_info));
        break;
      }
      else if ($pattern_type == "regex") {
        if (preg_match('/' . $pattern . '/', $path_info, $matches)) {
          $discovered_handler = $handler_name;
          $regex_matches = $matches;
          break;
        }
      }
    }

    if ($discovered_handler && class_exists($discovered_handler)) {
      unset($regex_matches[0]);
      $handler_instance = new $discovered_handler();

      if (!$method_arguments) {
        $method_arguments = $regex_matches;
      }

      // XHR (must come first), iPad, mobile catch all
      if ($this->xhr_request() && method_exists($discovered_handler, $request_method . '_xhr')) {
        header('Content-type: application/json');
        header('Pragma: no-cache');
        header('Cache-Control: no-cache, must-revalidate');
        header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
        $request_method .= '_xhr';
      }
      else if ($this->ipad_request() && method_exists($discovered_handler, $request_method . '_ipad')) {
        $request_method .= '_ipad';
      }
      else if ($this->mobile_request() && method_exists($discovered_handler, $request_method . '_mobile')) {
        $request_method .= '_mobile';
      }

      call_user_func_array(Array($handler_instance, $request_method), $method_arguments);
    }
    else {
      header("HTTP/1.0 404 Not Found");
      echo "404 Not Found";
      exit;
    }
  }

  private function xhr_request() {
    return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest';
  }

  private function ipad_request() {
    return strstr($_SERVER['HTTP_USER_AGENT'],'iPad');
  }

  private function mobile_request() {
    return strstr($_SERVER['HTTP_USER_AGENT'],'iPhone') || strstr($_SERVER['HTTP_USER_AGENT'],'iPod') || strstr($_SERVER['HTTP_USER_AGENT'],'Android') || strstr($_SERVER['HTTP_USER_AGENT'],'webOS');
  }
}

class ToroHandler {
  public function __construct() { }

  public function __call($name, $arguments) {
    header("HTTP/1.0 404 Not Found");
    echo "404 Not Found";
    exit;
  }
}