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<?php
//=======================================================================
// index.php
// Copyright (C) 2011 Nathan Osman
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//=======================================================================
// All controllers must derive from BaseController
require_once 'base_controller.php';
class JSStudioAddons
{
private $controller = 'addons'; // the default controller
private $action = 'index'; // and the default action
private $arguments = array();
private function FatalError($details)
{
header('Content-type: text/plain');
echo "This web application has encountered a serious internal error.\n" .
"Please try reloading the page or contact <admin@quickmediasolutions.com> if you continue to encounter this error.\n\n" .
'Details: ' . $details;
exit;
}
// Converts one_class to OneClass
private function GetClassName($raw_name)
{
return str_replace(' ', '', ucwords(str_replace('_', ' ', $raw_name))) . 'Controller';
}
private function ParseURL()
{
// The original requested path is passed to us
// in a $_GET variable as 'url'.
$url_parts = explode('/', $_GET['url']);
// Grab the parameters that were supplied
if(count($url_parts) > 0 && $url_parts[0] != '')
{
$this->controller = $url_parts[0];
if(count($url_parts) > 1 && $url_parts[1] != '')
$this->action = $url_parts[1];
}
// Make sure that there were no bad characters in the
// controller and the action.
if(!preg_match('/^\w+$/', $this->controller) ||
!preg_match('/^\w+$/', $this->action))
$this->FatalError('The request URL is invalid.');
// Now package the rest of the URL into $arguments
$this->arguments = $url_parts;
array_splice($this->arguments, 0, 2);
}
public function RunController()
{
// We have a controller name... check for the file's
// existence in the controller's folder.
$controller_filename = "controllers/{$this->controller}.php";
if(!is_file($controller_filename))
$this->FatalError("The '{$this->controller}' controller does not exist.");
// Load the controller file
require $controller_filename;
// Now attempt to find the appropriate class in the controller
$class_name = $this->GetClassName($this->controller);
if(class_exists($class_name) === FALSE)
$this->FatalError("The class '$class_name' does not exist within the file '$controller_filename'.");
// Create an instance of the class
$controller_instance = new $class_name($this->controller);
// Make sure the class derives from BaseController
if(!$controller_instance instanceof BaseController)
$this->FatalError("The class '$class_name' must derive from BaseController.");
// Make sure the specified method exists within the class
$method_name = $this->action;
if(method_exists($class_name, $method_name) === FALSE)
$this->FatalError("The class '$class_name' does not contain a method for the action '$method_name'.");
// Okay, now invoke the method
call_user_func_array(array($controller_instance, $method_name),
$this->arguments);
// Return the view variables that were created by the controller
return $controller_instance->GetViewVariables();
}
private function DisplayView($view_variables)
{
// Make sure that the view exists
$view_filename = "views/{$this->controller}/{$this->action}.inc";
if(!is_file($view_filename))
$this->FatalError("The view for the action {$this->action} is missing.");
// Now we need to import all of the variables
// in $view_variables into the local scope.
foreach($view_variables as $key =>$value)
$$key = $value;
// Now run the view
require_once $view_filename;
}
public function Go()
{
// Start by parsing the URL
$this->ParseURL();
// These two functions are wrapped in a try
// block so that we can display any exceptions
// that occur to the user
try
{
// Now run the selected controller
$view_vars = $this->RunController();
// ...and lastly display the view
$this->DisplayView($view_vars);
}
catch(Exception $e)
{
$this->FatalError($e->getMessage());
}
}
}
$addons = new JSStudioAddons();
$addons->Go();
?>
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