1: <?php
 2: 
 3: /*
 4:  * This file is part of the Symfony package.
 5:  *
 6:  * (c) Fabien Potencier <fabien@symfony.com>
 7:  *
 8:  * For the full copyright and license information, please view the LICENSE
 9:  * file that was distributed with this source code.
10:  */
11: 
12: namespace Symfony\Component\Config\Loader;
13: 
14: /**
15:  * LoaderResolver selects a loader for a given resource.
16:  *
17:  * A resource can be anything (e.g. a full path to a config file or a Closure).
18:  * Each loader determines whether it can load a resource and how.
19:  *
20:  * @author Fabien Potencier <fabien@symfony.com>
21:  */
22: class LoaderResolver implements LoaderResolverInterface
23: {
24:     /**
25:      * @var LoaderInterface[] An array of LoaderInterface objects
26:      */
27:     private $loaders;
28: 
29:     /**
30:      * Constructor.
31:      *
32:      * @param LoaderInterface[] $loaders An array of loaders
33:      */
34:     public function __construct(array $loaders = array())
35:     {
36:         $this->loaders = array();
37:         foreach ($loaders as $loader) {
38:             $this->addLoader($loader);
39:         }
40:     }
41: 
42:     /**
43:      * Returns a loader able to load the resource.
44:      *
45:      * @param mixed  $resource A resource
46:      * @param string $type     The resource type
47:      *
48:      * @return LoaderInterface|false A LoaderInterface instance
49:      */
50:     public function resolve($resource, $type = null)
51:     {
52:         foreach ($this->loaders as $loader) {
53:             if ($loader->supports($resource, $type)) {
54:                 return $loader;
55:             }
56:         }
57: 
58:         return false;
59:     }
60: 
61:     /**
62:      * Adds a loader.
63:      *
64:      * @param LoaderInterface $loader A LoaderInterface instance
65:      */
66:     public function addLoader(LoaderInterface $loader)
67:     {
68:         $this->loaders[] = $loader;
69:         $loader->setResolver($this);
70:     }
71: 
72:     /**
73:      * Returns the registered loaders.
74:      *
75:      * @return LoaderInterface[] An array of LoaderInterface instances
76:      */
77:     public function getLoaders()
78:     {
79:         return $this->loaders;
80:     }
81: }
82: