127 lines
4.0 KiB
PHP
127 lines
4.0 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Config\Loader;
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use Symfony\Component\Config\Exception\FileLoaderImportCircularReferenceException;
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use Symfony\Component\Config\Exception\FileLoaderLoadException;
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use Symfony\Component\Config\FileLocatorInterface;
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/**
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* FileLoader is the abstract class used by all built-in loaders that are file based.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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abstract class FileLoader extends Loader
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{
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protected static $loading = array();
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protected $locator;
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private $currentDir;
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public function __construct(FileLocatorInterface $locator)
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{
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$this->locator = $locator;
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}
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/**
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* Sets the current directory.
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*
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* @param string $dir
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*/
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public function setCurrentDir($dir)
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{
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$this->currentDir = $dir;
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}
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/**
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* Returns the file locator used by this loader.
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*
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* @return FileLocatorInterface
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*/
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public function getLocator()
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{
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return $this->locator;
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}
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/**
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* Imports a resource.
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*
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* @param mixed $resource A Resource
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* @param string|null $type The resource type or null if unknown
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* @param bool $ignoreErrors Whether to ignore import errors or not
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* @param string|null $sourceResource The original resource importing the new resource
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*
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* @return mixed
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*
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* @throws FileLoaderLoadException
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* @throws FileLoaderImportCircularReferenceException
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*/
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public function import($resource, $type = null, $ignoreErrors = false, $sourceResource = null)
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{
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try {
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$loader = $this->resolve($resource, $type);
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if ($loader instanceof self && null !== $this->currentDir) {
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// we fallback to the current locator to keep BC
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// as some some loaders do not call the parent __construct()
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// @deprecated should be removed in 3.0
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$locator = $loader->getLocator();
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if (null === $locator) {
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@trigger_error('Not calling the parent constructor in '.\get_class($loader).' which extends '.__CLASS__.' is deprecated since Symfony 2.7 and will not be supported anymore in 3.0.', E_USER_DEPRECATED);
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$locator = $this->locator;
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}
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$resource = $locator->locate($resource, $this->currentDir, false);
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}
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$resources = \is_array($resource) ? $resource : array($resource);
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for ($i = 0; $i < $resourcesCount = \count($resources); ++$i) {
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if (isset(self::$loading[$resources[$i]])) {
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if ($i == $resourcesCount - 1) {
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throw new FileLoaderImportCircularReferenceException(array_keys(self::$loading));
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}
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} else {
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$resource = $resources[$i];
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break;
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}
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}
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self::$loading[$resource] = true;
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try {
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$ret = $loader->load($resource, $type);
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} catch (\Exception $e) {
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unset(self::$loading[$resource]);
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throw $e;
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} catch (\Throwable $e) {
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unset(self::$loading[$resource]);
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throw $e;
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}
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unset(self::$loading[$resource]);
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return $ret;
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} catch (FileLoaderImportCircularReferenceException $e) {
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throw $e;
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} catch (\Exception $e) {
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if (!$ignoreErrors) {
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// prevent embedded imports from nesting multiple exceptions
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if ($e instanceof FileLoaderLoadException) {
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throw $e;
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}
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throw new FileLoaderLoadException($resource, $sourceResource, null, $e);
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}
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}
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}
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}
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