<?php namespace Symfony\Component\HttpKernel; use Symfony\Component\DependencyInjection\ContainerInterface; use Symfony\Component\DependencyInjection\ContainerBuilder; use Symfony\Component\DependencyInjection\Dumper\PhpDumper; use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag; use Symfony\Component\DependencyInjection\Loader\XmlFileLoader; use Symfony\Component\DependencyInjection\Loader\YamlFileLoader; use Symfony\Component\DependencyInjection\Loader\IniFileLoader; use Symfony\Component\DependencyInjection\Loader\PhpFileLoader; use Symfony\Component\DependencyInjection\Loader\ClosureLoader; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; use Symfony\Component\HttpKernel\HttpKernelInterface; use Symfony\Component\HttpKernel\Bundle\BundleInterface; use Symfony\Component\HttpKernel\Config\FileLocator; use Symfony\Component\HttpKernel\DependencyInjection\MergeExtensionConfigurationPass; use Symfony\Component\HttpKernel\DependencyInjection\AddClassesToCachePass; use Symfony\Component\HttpKernel\Debug\ErrorHandler; use Symfony\Component\HttpKernel\Debug\ExceptionHandler; use Symfony\Component\Config\Loader\LoaderResolver; use Symfony\Component\Config\Loader\DelegatingLoader; use Symfony\Component\Config\ConfigCache; use Symfony\Component\ClassLoader\ClassCollectionLoader; use Symfony\Component\ClassLoader\DebugClassLoader; abstract class Kernel implements KernelInterface, TerminableInterface { protected $bundles; protected $bundleMap; protected $container; protected $rootDir; protected $environment; protected $debug; protected $booted; protected $name; protected $startTime; protected $classes; protected $errorReportingLevel; const VERSION = '2.1.0-BETA4'; const VERSION_ID = '20100'; const MAJOR_VERSION = '2'; const MINOR_VERSION = '1'; const RELEASE_VERSION = '0'; const EXTRA_VERSION = 'BETA'; public function __construct($environment, $debug) { $this->environment = $environment; $this->debug = (Boolean) $debug; $this->booted = false; $this->rootDir = $this->getRootDir(); $this->name = $this->getName(); $this->classes = array(); if ($this->debug) { $this->startTime = microtime(true); } $this->init(); } public function init() { if ($this->debug) { ini_set('display_errors', 1); error_reporting(-1); DebugClassLoader::enable(); ErrorHandler::register($this->errorReportingLevel); if ('cli' !== php_sapi_name()) { ExceptionHandler::register(); } } else { ini_set('display_errors', 0); } } public function __clone() { if ($this->debug) { $this->startTime = microtime(true); } $this->booted = false; $this->container = null; } public function boot() { if (true === $this->booted) { return; } // init bundles $this->initializeBundles(); // init container $this->initializeContainer(); foreach ($this->getBundles() as $bundle) { $bundle->setContainer($this->container); $bundle->boot(); } $this->booted = true; } public function terminate(Request $request, Response $response) { if (false === $this->booted) { return; } if ($this->getHttpKernel() instanceof TerminableInterface) { $this->getHttpKernel()->terminate($request, $response); } } public function shutdown() { if (false === $this->booted) { return; } $this->booted = false; foreach ($this->getBundles() as $bundle) { $bundle->shutdown(); $bundle->setContainer(null); } $this->container = null; } public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true) { if (false === $this->booted) { $this->boot(); } return $this->getHttpKernel()->handle($request, $type, $catch); } protected function getHttpKernel() { return $this->container->get('http_kernel'); } public function getBundles() { return $this->bundles; } public function isClassInActiveBundle($class) { foreach ($this->getBundles() as $bundle) { if (0 === strpos($class, $bundle->getNamespace())) { return true; } } return false; } public function getBundle($name, $first = true) { if (!isset($this->bundleMap[$name])) { throw new \InvalidArgumentException(sprintf('Bundle "%s" does not exist or it is not enabled. Maybe you forgot to add it in the registerBundles() function of your %s.php file?', $name, get_class($this))); } if (true === $first) { return $this->bundleMap[$name][0]; } return $this->bundleMap[$name]; } public function locateResource($name, $dir = null, $first = true) { if ('@' !== $name[0]) { throw new \InvalidArgumentException(sprintf('A resource name must start with @ ("%s" given).', $name)); } if (false !== strpos($name, '..')) { throw new \RuntimeException(sprintf('File name "%s" contains invalid characters (..).', $name)); } $bundleName = substr($name, 1); $path = ''; if (false !== strpos($bundleName, '/')) { list($bundleName, $path) = explode('/', $bundleName, 2); } $isResource = 0 === strpos($path, 'Resources') && null !== $dir; $overridePath = substr($path, 9); $resourceBundle = null; $bundles = $this->getBundle($bundleName, false); $files = array(); foreach ($bundles as $bundle) { if ($isResource && file_exists($file = $dir.'/'.$bundle->getName().$overridePath)) { if (null !== $resourceBundle) { throw new \RuntimeException(sprintf('"%s" resource is hidden by a resource from the "%s" derived bundle. Create a "%s" file to override the bundle resource.', $file, $resourceBundle, $dir.'/'.$bundles[0]->getName().$overridePath )); } if ($first) { return $file; } $files[] = $file; } if (file_exists($file = $bundle->getPath().'/'.$path)) { if ($first && !$isResource) { return $file; } $files[] = $file; $resourceBundle = $bundle->getName(); } } if (count($files) > 0) { return $first && $isResource ? $files[0] : $files; } throw new \InvalidArgumentException(sprintf('Unable to find file "%s".', $name)); } public function getName() { if (null === $this->name) { $this->name = preg_replace('/[^a-zA-Z0-9_]+/', '', basename($this->rootDir)); } return $this->name; } public function getEnvironment() { return $this->environment; } public function isDebug() { return $this->debug; } public function getRootDir() { if (null === $this->rootDir) { $r = new \ReflectionObject($this); $this->rootDir = str_replace('\\', '/', dirname($r->getFileName())); } return $this->rootDir; } public function getContainer() { return $this->container; } public function loadClassCache($name = 'classes', $extension = '.php') { if (!$this->booted && is_file($this->getCacheDir().'/classes.map')) { ClassCollectionLoader::load(include($this->getCacheDir().'/classes.map'), $this->getCacheDir(), $name, $this->debug, false, $extension); } } public function setClassCache(array $classes) { file_put_contents($this->getCacheDir().'/classes.map', sprintf('<?php return %s;', var_export($classes, true))); } public function getStartTime() { return $this->debug ? $this->startTime : -INF; } public function getCacheDir() { return $this->rootDir.'/cache/'.$this->environment; } public function getLogDir() { return $this->rootDir.'/logs'; } public function getCharset() { return 'UTF-8'; } protected function initializeBundles() { // init bundles $this->bundles = array(); $topMostBundles = array(); $directChildren = array(); foreach ($this->registerBundles() as $bundle) { $name = $bundle->getName(); if (isset($this->bundles[$name])) { throw new \LogicException(sprintf('Trying to register two bundles with the same name "%s"', $name)); } $this->bundles[$name] = $bundle; if ($parentName = $bundle->getParent()) { if (isset($directChildren[$parentName])) { throw new \LogicException(sprintf('Bundle "%s" is directly extended by two bundles "%s" and "%s".', $parentName, $name, $directChildren[$parentName])); } if ($parentName == $name) { throw new \LogicException(sprintf('Bundle "%s" can not extend itself.', $name)); } $directChildren[$parentName] = $name; } else { $topMostBundles[$name] = $bundle; } } // look for orphans if (count($diff = array_values(array_diff(array_keys($directChildren), array_keys($this->bundles))))) { throw new \LogicException(sprintf('Bundle "%s" extends bundle "%s", which is not registered.', $directChildren[$diff[0]], $diff[0])); } // inheritance $this->bundleMap = array(); foreach ($topMostBundles as $name => $bundle) { $bundleMap = array($bundle); $hierarchy = array($name); while (isset($directChildren[$name])) { $name = $directChildren[$name]; array_unshift($bundleMap, $this->bundles[$name]); $hierarchy[] = $name; } foreach ($hierarchy as $bundle) { $this->bundleMap[$bundle] = $bundleMap; array_pop($bundleMap); } } } protected function getContainerClass() { return $this->name.ucfirst($this->environment).($this->debug ? 'Debug' : '').'ProjectContainer'; } protected function getContainerBaseClass() { return 'Container'; } protected function initializeContainer() { $class = $this->getContainerClass(); $cache = new ConfigCache($this->getCacheDir().'/'.$class.'.php', $this->debug); $fresh = true; if (!$cache->isFresh()) { $container = $this->buildContainer(); $this->dumpContainer($cache, $container, $class, $this->getContainerBaseClass()); $fresh = false; } require_once $cache; $this->container = new $class(); $this->container->set('kernel', $this); if (!$fresh && $this->container->has('cache_warmer')) { $this->container->get('cache_warmer')->warmUp($this->container->getParameter('kernel.cache_dir')); } } protected function getKernelParameters() { $bundles = array(); foreach ($this->bundles as $name => $bundle) { $bundles[$name] = get_class($bundle); } return array_merge( array( 'kernel.root_dir' => $this->rootDir, 'kernel.environment' => $this->environment, 'kernel.debug' => $this->debug, 'kernel.name' => $this->name, 'kernel.cache_dir' => $this->getCacheDir(), 'kernel.logs_dir' => $this->getLogDir(), 'kernel.bundles' => $bundles, 'kernel.charset' => $this->getCharset(), 'kernel.container_class' => $this->getContainerClass(), ), $this->getEnvParameters() ); } protected function getEnvParameters() { $parameters = array(); foreach ($_SERVER as $key => $value) { if (0 === strpos($key, 'SYMFONY__')) { $parameters[strtolower(str_replace('__', '.', substr($key, 9)))] = $value; } } return $parameters; } protected function buildContainer() { foreach (array('cache' => $this->getCacheDir(), 'logs' => $this->getLogDir()) as $name => $dir) { if (!is_dir($dir)) { if (false === @mkdir($dir, 0777, true)) { throw new \RuntimeException(sprintf("Unable to create the %s directory (%s)\n", $name, $dir)); } } elseif (!is_writable($dir)) { throw new \RuntimeException(sprintf("Unable to write in the %s directory (%s)\n", $name, $dir)); } } $container = $this->getContainerBuilder(); $extensions = array(); foreach ($this->bundles as $bundle) { if ($extension = $bundle->getContainerExtension()) { $container->registerExtension($extension); $extensions[] = $extension->getAlias(); } if ($this->debug) { $container->addObjectResource($bundle); } } foreach ($this->bundles as $bundle) { $bundle->build($container); } $container->addObjectResource($this); // ensure these extensions are implicitly loaded $container->getCompilerPassConfig()->setMergePass(new MergeExtensionConfigurationPass($extensions)); if (null !== $cont = $this->registerContainerConfiguration($this->getContainerLoader($container))) { $container->merge($cont); } $container->addCompilerPass(new AddClassesToCachePass($this)); $container->compile(); return $container; } protected function getContainerBuilder() { return new ContainerBuilder(new ParameterBag($this->getKernelParameters())); } protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container, $class, $baseClass) { // cache the container $dumper = new PhpDumper($container); $content = $dumper->dump(array('class' => $class, 'base_class' => $baseClass)); if (!$this->debug) { $content = self::stripComments($content); } $cache->write($content, $container->getResources()); } protected function getContainerLoader(ContainerInterface $container) { $locator = new FileLocator($this); $resolver = new LoaderResolver(array( new XmlFileLoader($container, $locator), new YamlFileLoader($container, $locator), new IniFileLoader($container, $locator), new PhpFileLoader($container, $locator), new ClosureLoader($container), )); return new DelegatingLoader($resolver); } public static function stripComments($source) { if (!function_exists('token_get_all')) { return $source; } $output = ''; foreach (token_get_all($source) as $token) { if (is_string($token)) { $output .= $token; } elseif (!in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) { $output .= $token[1]; } } // replace multiple new lines with a single newline $output = preg_replace(array('/\s+$/Sm', '/\n+/S'), "\n", $output); return $output; } public function serialize() { return serialize(array($this->environment, $this->debug)); } public function unserialize($data) { list($environment, $debug) = unserialize($data); $this->__construct($environment, $debug); } }