FileLoader.php
3.42 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
<?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
{
/**
* @var array
*/
protected static $loading = array();
/**
* @var FileLocatorInterface
*/
protected $locator;
private $currentDir;
/**
* Constructor.
*
* @param FileLocatorInterface $locator A FileLocatorInterface instance
*/
public function __construct(FileLocatorInterface $locator)
{
$this->locator = $locator;
}
/**
* Sets the current directory.
*
* @param string $dir
*/
public function setCurrentDir($dir)
{
$this->currentDir = $dir;
}
/**
* Returns the file locator used by this loader.
*
* @return FileLocatorInterface
*/
public function getLocator()
{
return $this->locator;
}
/**
* Imports a resource.
*
* @param mixed $resource A Resource
* @param string|null $type The resource type or null if unknown
* @param bool $ignoreErrors Whether to ignore import errors or not
* @param string|null $sourceResource The original resource importing the new resource
*
* @return mixed
*
* @throws FileLoaderLoadException
* @throws FileLoaderImportCircularReferenceException
*/
public function import($resource, $type = null, $ignoreErrors = false, $sourceResource = null)
{
try {
$loader = $this->resolve($resource, $type);
if ($loader instanceof self && null !== $this->currentDir) {
$resource = $loader->getLocator()->locate($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;
try {
$ret = $loader->load($resource, $type);
} finally {
unset(self::$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);
}
}
}
}