|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* |
|
4
|
|
|
* This file is part of the `liip/LiipImagineBundle` project. |
|
5
|
|
|
* |
|
6
|
|
|
* (c) https://github.com/liip/LiipImagineBundle/graphs/contributors |
|
7
|
|
|
* |
|
8
|
|
|
* For the full copyright and license information, please view the LICENSE.md |
|
9
|
|
|
* file that was distributed with this source code. |
|
10
|
|
|
*/ |
|
11
|
|
|
|
|
12
|
|
|
namespace Liip\ImagineBundle\Imagine\Data\Loader; |
|
13
|
|
|
|
|
14
|
|
|
use Liip\ImagineBundle\Exception\File\Loader\NotLoadableException; |
|
15
|
|
|
use Liip\ImagineBundle\File\FileBlob; |
|
16
|
|
|
use Liip\ImagineBundle\File\FileInterface; |
|
17
|
|
|
|
|
18
|
|
|
class StreamLoader implements LoaderInterface |
|
19
|
|
|
{ |
|
20
|
|
|
/** |
|
21
|
|
|
* The wrapper prefix to append to the path to be loaded. |
|
22
|
|
|
* |
|
23
|
|
|
* @var string |
|
24
|
|
|
*/ |
|
25
|
|
|
protected $wrapperPrefix; |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* A stream context resource to use. |
|
29
|
|
|
* |
|
30
|
|
|
* @var resource|null |
|
31
|
|
|
*/ |
|
32
|
|
|
protected $context; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* @param string $wrapperPrefix |
|
36
|
|
|
* @param resource|null $context |
|
37
|
|
|
* |
|
38
|
|
|
* @throws \InvalidArgumentException |
|
39
|
|
|
*/ |
|
40
|
|
|
public function __construct(string $wrapperPrefix, $context = null) |
|
41
|
|
|
{ |
|
42
|
|
|
$this->wrapperPrefix = $wrapperPrefix; |
|
43
|
|
|
|
|
44
|
|
|
if ($context && !is_resource($context)) { |
|
45
|
|
|
throw new \InvalidArgumentException('The given context is no valid resource.'); |
|
46
|
|
|
} |
|
47
|
|
|
|
|
48
|
|
|
$this->context = empty($context) ? null : $context; |
|
49
|
|
|
} |
|
50
|
|
|
|
|
51
|
|
|
/** |
|
52
|
|
|
* {@inheritdoc} |
|
53
|
|
|
*/ |
|
54
|
|
|
public function find(string $identity): FileInterface |
|
55
|
|
|
{ |
|
56
|
|
|
$name = $this->wrapperPrefix.$identity; |
|
57
|
|
|
|
|
58
|
|
|
/* |
|
59
|
|
|
* This looks strange, but at least in PHP 5.3.8 it will raise an E_WARNING if the 4th parameter is null. |
|
60
|
|
|
* fopen() will be called only once with the correct arguments. |
|
61
|
|
|
* |
|
62
|
|
|
* The error suppression is solely to determine whether the file exists. |
|
63
|
|
|
* file_exists() is not used as not all wrappers support stat() to actually check for existing resources. |
|
64
|
|
|
*/ |
|
65
|
|
|
if (($this->context && !$resource = @fopen($name, 'r', null, $this->context)) || !$resource = @fopen($name, 'r')) { |
|
66
|
|
|
throw new NotLoadableException('Source image %s not found.', $name); |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
// Closing the opened stream to avoid locking of the resource to find. |
|
70
|
|
|
fclose($resource); |
|
71
|
|
|
|
|
72
|
|
|
try { |
|
73
|
|
|
$content = file_get_contents($name, null, $this->context); |
|
74
|
|
|
} catch (\Exception $e) { |
|
75
|
|
|
throw new NotLoadableException('Source image %s could not be loaded.', $name, $e); |
|
76
|
|
|
} |
|
77
|
|
|
|
|
78
|
|
|
if (false === $content) { |
|
79
|
|
|
throw new NotLoadableException('Source image %s could not be loaded.', $name); |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
return FileBlob::create($content); |
|
83
|
|
|
} |
|
84
|
|
|
} |
|
85
|
|
|
|
liip /
LiipImagineBundle
