Viewing file:  FileLoader.php (3.31 KB) -rw-r--r--
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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);
}
}
}
}
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