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- <?php
- /*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- namespace Symfony\Component\ClassLoader;
- /**
- * WinCacheClassLoader implements a wrapping autoloader cached in WinCache.
- *
- * It expects an object implementing a findFile method to find the file. This
- * allow using it as a wrapper around the other loaders of the component (the
- * ClassLoader and the UniversalClassLoader for instance) but also around any
- * other autoloaders following this convention (the Composer one for instance).
- *
- * // with a Symfony autoloader
- * use Symfony\Component\ClassLoader\ClassLoader;
- *
- * $loader = new ClassLoader();
- * $loader->addPrefix('Symfony\Component', __DIR__.'/component');
- * $loader->addPrefix('Symfony', __DIR__.'/framework');
- *
- * // or with a Composer autoloader
- * use Composer\Autoload\ClassLoader;
- *
- * $loader = new ClassLoader();
- * $loader->add('Symfony\Component', __DIR__.'/component');
- * $loader->add('Symfony', __DIR__.'/framework');
- *
- * $cachedLoader = new WinCacheClassLoader('my_prefix', $loader);
- *
- * // activate the cached autoloader
- * $cachedLoader->register();
- *
- * // eventually deactivate the non-cached loader if it was registered previously
- * // to be sure to use the cached one.
- * $loader->unregister();
- *
- * @author Fabien Potencier <fabien@symfony.com>
- * @author Kris Wallsmith <kris@symfony.com>
- * @author Artem Ryzhkov <artem@smart-core.org>
- */
- class WinCacheClassLoader
- {
- private $prefix;
- /**
- * A class loader object that implements the findFile() method.
- *
- * @var object
- */
- protected $decorated;
- /**
- * Constructor.
- *
- * @param string $prefix The WinCache namespace prefix to use
- * @param object $decorated A class loader object that implements the findFile() method
- *
- * @throws \RuntimeException
- * @throws \InvalidArgumentException
- */
- public function __construct($prefix, $decorated)
- {
- if (!extension_loaded('wincache')) {
- throw new \RuntimeException('Unable to use WinCacheClassLoader as WinCache is not enabled.');
- }
- if (!method_exists($decorated, 'findFile')) {
- throw new \InvalidArgumentException('The class finder must implement a "findFile" method.');
- }
- $this->prefix = $prefix;
- $this->decorated = $decorated;
- }
- /**
- * Registers this instance as an autoloader.
- *
- * @param bool $prepend Whether to prepend the autoloader or not
- */
- public function register($prepend = false)
- {
- spl_autoload_register(array($this, 'loadClass'), true, $prepend);
- }
- /**
- * Unregisters this instance as an autoloader.
- */
- public function unregister()
- {
- spl_autoload_unregister(array($this, 'loadClass'));
- }
- /**
- * Loads the given class or interface.
- *
- * @param string $class The name of the class
- *
- * @return bool|null True, if loaded
- */
- public function loadClass($class)
- {
- if ($file = $this->findFile($class)) {
- require $file;
- return true;
- }
- }
- /**
- * Finds a file by class name while caching lookups to WinCache.
- *
- * @param string $class A class name to resolve to file
- *
- * @return string|null
- */
- public function findFile($class)
- {
- $file = wincache_ucache_get($this->prefix.$class, $success);
- if (!$success) {
- wincache_ucache_set($this->prefix.$class, $file = $this->decorated->findFile($class) ?: null, 0);
- }
- return $file;
- }
- /**
- * Passes through all unknown calls onto the decorated object.
- */
- public function __call($method, $args)
- {
- return call_user_func_array(array($this->decorated, $method), $args);
- }
- }
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