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FileLoader.php
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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\Config\Loader; use Symfony\Component\Config\FileLocatorInterface; use Symfony\Component\Config\Exception\FileLoaderLoadException; use Symfony\Component\Config\Exception\FileLoaderImportCircularReferenceException; /** * FileLoader is the abstract class used by all built-in loaders that are file based. * * @author Fabien Potencier <fabien@symfony.com> */ abstract class FileLoader extends Loader { protected static $loading = array(); protected $locator; private $currentDir; /** * Constructor. * * @param FileLocatorInterface $locator A FileLocatorInterface instance */ public function __construct(FileLocatorInterface $locator) { $this->locator = $locator; } public function setCurrentDir($dir) { $this->currentDir = $dir; } public function getLocator() { return $this->locator; } /** * Imports a resource. * * @param mixed $resource A Resource * @param string $type The resource type * @param Boolean $ignoreErrors Whether to ignore import errors or not * @param string $sourceResource The original resource importing the new resource * * @return mixed * * @throws FileLoaderLoadException * @throws FileLoaderImportCircularReferenceException */ public function import($resource, $type = null, $ignoreErrors = false, $sourceResource = null) { try { $loader = $this->resolve($resource, $type); if ($loader instanceof FileLoader && null !== $this->currentDir) { // we fallback to the current locator to keep BC // as some some loaders do not call the parent __construct() // @deprecated should be removed in 3.0 $locator = $loader->getLocator() ?: $this->locator; $resource = $locator->locate($resource, $this->currentDir, false); } $resources = is_array($resource) ? $resource : array($resource); for ($i = 0; $i < $resourcesCount = count($resources); $i++ ) { if (isset(self::$loading[$resources[$i]])) { if ($i == $resourcesCount-1) { throw new FileLoaderImportCircularReferenceException(array_keys(self::$loading)); } } else { $resource = $resources[$i]; break; } } self::$loading[$resource] = true; $ret = $loader->load($resource, $type); unset(self::$loading[$resource]); return $ret; } catch (FileLoaderImportCircularReferenceException $e) { throw $e; } catch (\Exception $e) { if (!$ignoreErrors) { // prevent embedded imports from nesting multiple exceptions if ($e instanceof FileLoaderLoadException) { throw $e; } throw new FileLoaderLoadException($resource, $sourceResource, null, $e); } } } }