Smart loaders

DoctrineLoader.php

<?php

namespace Kdyby\Loaders;

use Doctrine;



class DoctrineLoader
{

	/** @var array */
	private static $registered = FALSE;



	/**
	 * @param string|NULL $namespace
	 * @return Kdyby\Loaders\DoctrineLoader
	 */
	public static function register()
	{
		if (self::$registered) {
			throw DoctrineLoaderException::alreadyRegistered();
		}

		require_once LIBS_DIR . '/Doctrine/Common/ClassLoader.php';

		$commonLoader = self::$registered[] = new Doctrine\Common\ClassLoader('Doctrine\DBAL\Migrations', LIBS_DIR . '/Doctrine'); // migrations
		$commonLoader->register();

		$commonLoader = self::$registered[] = new Doctrine\Common\ClassLoader('Doctrine', LIBS_DIR);
		$commonLoader->register();

		$commonLoader = self::$registered[] = new Doctrine\Common\ClassLoader('DoctrineExtensions', LIBS_DIR . '/Doctrine');
		$commonLoader->register();

		$commonLoader = self::$registered[] = new Doctrine\Common\ClassLoader('Gedmo', LIBS_DIR . '/Doctrine');
		$commonLoader->register();

		return new self;
	}

}



class DoctrineLoaderException extends \Exception
{

	/**
	 * @return Kdyby\Loaders\DoctrineLoaderException
	 */
	public static function alreadyRegistered()
	{
		return new self("Cannot register, already registered loader for Doctrine");
	}

}

SymfonyLoader.php

<?php

namespace Kdyby\Loaders;

use Symfony;



class SymfonyLoader
{

	/** @var array */
	private static $registered = FALSE;



	/**
	 * @param string|NULL $namespace
	 * @return Kdyby\Loaders\SymfonyLoader
	 */
	public static function register()
	{
		if (self::$registered) {
			throw SymfonyLoaderException::alreadyRegistered();
		}

		require_once LIBS_DIR . '/Symfony/Component/ClassLoader/UniversalClassLoader.php';

		$symfonyLoader = self::$registered[] = new Symfony\Component\ClassLoader\UniversalClassLoader();
		$symfonyLoader->registerNamespaces(array(
			'Symfony' => LIBS_DIR,
		));
		$symfonyLoader->register();

		return new self;
	}

}



class SymfonyLoaderException extends \Exception
{

	/**
	 * @return Kdyby\Loaders\SymfonyLoaderException
	 */
	public static function alreadyRegistered()
	{
		return new self("Cannot register, already registered loader for Symfony");
	}

}

ZendLoader.php

<?php

namespace Kdyby\Loaders;

use Zend;



class ZendLoader
{

	/** @var array */
	private static $registered = FALSE;



	/**
	 * @param string|NULL $namespace
	 * @return Kdyby\Loaders\ZendLoader
	 */
	public static function register()
	{
		if (self::$registered) {
			throw ZendLoaderException::alreadyRegistered();
		}

		require_once LIBS_DIR . '/Zend/Loader/StandardAutoloader.php';

		$zendLoader = self::$registered[] = new Zend\Loader\StandardAutoloader();
		$zendLoader->register();

		return new self;
	}

}



class ZendLoaderException extends \Exception
{

	/**
	 * @return Kdyby\Loaders\ZendLoaderException
	 */
	public static function alreadyRegistered()
	{
		return new self("Cannot register, already registered loader for Zend");
	}

}