/shopaholic/lib/Nette/Application/PresenterLoader.php

<?php



/**

 * Nette Framework

 *

 * Copyright (c) 2004, 2009 David Grudl (http://davidgrudl.com)

 *

 * This source file is subject to the "Nette license" that is bundled

 * with this package in the file license.txt.

 *

 * For more information please see http://nettephp.com

 *

 * @copyright  Copyright (c) 2004, 2009 David Grudl

 * @license    http://nettephp.com/license  Nette license

 * @link       http://nettephp.com

 * @category   Nette

 * @package    Nette\Application

 * @version    $Id: PresenterLoader.php 246 2009-03-30 04:00:21Z david@grudl.com $

 */







require_once dirname(__FILE__) . '/../Application/IPresenterLoader.php';







/**

 * Default presenter loader.

 *

 * @author     David Grudl

 * @copyright  Copyright (c) 2004, 2009 David Grudl

 * @package    Nette\Application

 */

class PresenterLoader implements IPresenterLoader

{

	/** @var bool */

	public $caseSensitive = FALSE;



	/** @var array */

	private $cache = array();







	/**

	 * @param  string  presenter name

	 * @return string  class name

	 * @throws InvalidPresenterException

	 */

	public function getPresenterClass(& $name)

	{

		if (isset($this->cache[$name])) {

			list($class, $name) = $this->cache[$name];

			return $class;

		}



		if (!is_string($name) || !preg_match("#^[a-zA-Z\x7f-\xff][a-zA-Z0-9\x7f-\xff:]*$#", $name)) {

			throw new InvalidPresenterException("Presenter name must be alphanumeric string, '$name' is invalid.");

		}



		$class = $this->formatPresenterClass($name);



		if (!class_exists($class)) {

			// internal autoloading

			$file = $this->formatPresenterFile($name);

			if (is_file($file) && is_readable($file)) {

				LimitedScope::load($file);

			}



			if (!class_exists($class)) {

				throw new InvalidPresenterException("Cannot load presenter '$name', class '$class' was not found in '$file'.");

			}

		}



		$reflection = new ReflectionClass($class);

		$class = $reflection->getName();



		if (!$reflection->implementsInterface('IPresenter')) {

			throw new InvalidPresenterException("Cannot load presenter '$name', class '$class' is not Nette\\Application\\IPresenter implementor.");

		}



		if ($reflection->isAbstract()) {

			throw new InvalidPresenterException("Cannot load presenter '$name', class '$class' is abstract.");

		}



		// canonicalize presenter name

		$realName = $this->unformatPresenterClass($class);

		if ($name !== $realName) {

			if ($this->caseSensitive) {

				throw new InvalidPresenterException("Cannot load presenter '$name', case mismatch. Real name is '$realName'.");

			} else {

				$this->cache[$name] = array($class, $realName);

				$name = $realName;

			}

		} else {

			$this->cache[$name] = array($class, $realName);

		}



		return $class;

	}







	/**

	 * Formats presenter class name from its name.

	 * @param  string

	 * @return string

	 */

	public function formatPresenterClass($presenter)

	{

		// PHP 5.3

		

		return strtr($presenter, ':', '_') . 'Presenter';

	}







	/**

	 * Formats presenter name from class name.

	 * @param  string

	 * @return string

	 */

	public function unformatPresenterClass($class)

	{

		// PHP 5.3

		

		return strtr(substr($class, 0, -9), '_', ':');

	}







	/**

	 * Formats presenter class file name.

	 * @param  string

	 * @return string

	 */

	public function formatPresenterFile($presenter)

	{

		$presenter = str_replace(':', 'Module/', $presenter);

		$presenter = Environment::getVariable('presentersDir') . '/' . $presenter . 'Presenter.php';

		return $presenter;

	}



}