|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
4
|
|
|
* file that was distributed with this source code. |
|
5
|
|
|
* 08/08/12 15:22 |
|
6
|
|
|
*/ |
|
7
|
|
|
|
|
8
|
|
|
namespace CssEmbed; |
|
9
|
|
|
|
|
10
|
|
|
/** |
|
11
|
|
|
* CssEmbed |
|
12
|
|
|
* |
|
13
|
|
|
* @author Pierre Tachoire <[email protected]> |
|
14
|
|
|
*/ |
|
15
|
|
|
class CssEmbed |
|
16
|
|
|
{ |
|
17
|
|
|
|
|
18
|
|
|
const SEARCH_PATTERN = "%url\\(['\" ]*((?!data:|//)[^'\"#\?: ]+)['\" ]*\\)%U"; |
|
19
|
|
|
const URI_PATTERN = "url(data:%s;base64,%s)"; |
|
20
|
|
|
|
|
21
|
|
|
protected $root_dir; |
|
22
|
|
|
|
|
23
|
|
|
/** |
|
24
|
|
|
* @param $root_dir |
|
25
|
|
|
*/ |
|
26
|
|
|
public function setRootDir($root_dir) |
|
27
|
|
|
{ |
|
28
|
|
|
$this->root_dir = $root_dir; |
|
29
|
|
|
} |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* @param $css_file |
|
33
|
|
|
* @return null|string |
|
34
|
|
|
* @throws \InvalidArgumentException |
|
35
|
|
|
*/ |
|
36
|
|
|
public function embedCss($css_file) |
|
37
|
|
|
{ |
|
38
|
|
|
$this->setRootDir(dirname($css_file)); |
|
39
|
|
|
$return = null; |
|
40
|
|
|
$handle = fopen($css_file, "r"); |
|
41
|
|
|
if ($handle === false) { |
|
42
|
|
|
throw new \InvalidArgumentException(sprintf('Cannot read file %s', $css_file)); |
|
43
|
|
|
} |
|
44
|
|
|
while (($line = fgets($handle)) !== false) { |
|
45
|
|
|
$return .= $this->embedString($line); |
|
46
|
|
|
} |
|
47
|
|
|
fclose($handle); |
|
48
|
|
|
|
|
49
|
|
|
return $return; |
|
50
|
|
|
} |
|
51
|
|
|
|
|
52
|
|
|
/** |
|
53
|
|
|
* @param $content |
|
54
|
|
|
* @return mixed |
|
55
|
|
|
*/ |
|
56
|
|
|
public function embedString($content) |
|
57
|
|
|
{ |
|
58
|
|
|
return preg_replace_callback(self::SEARCH_PATTERN, array($this, 'replace'), $content); |
|
59
|
|
|
} |
|
60
|
|
|
|
|
61
|
|
|
/** |
|
62
|
|
|
* @param $matches |
|
63
|
|
|
* @return string |
|
64
|
|
|
*/ |
|
65
|
|
|
protected function replace($matches) |
|
66
|
|
|
{ |
|
67
|
|
|
return $this->embedFile($this->root_dir . DIRECTORY_SEPARATOR . $matches[1]); |
|
68
|
|
|
} |
|
69
|
|
|
|
|
70
|
|
|
/** |
|
71
|
|
|
* @param $file |
|
72
|
|
|
* @return string |
|
73
|
|
|
*/ |
|
74
|
|
|
protected function embedFile($file) |
|
75
|
|
|
{ |
|
76
|
|
|
return sprintf(self::URI_PATTERN, $this->mimeType($file), $this->base64($file)); |
|
77
|
|
|
} |
|
78
|
|
|
|
|
79
|
|
|
/** |
|
80
|
|
|
* @param $file |
|
81
|
|
|
* @return string |
|
82
|
|
|
*/ |
|
83
|
|
|
protected function mimeType($file) |
|
84
|
|
|
{ |
|
85
|
|
|
if (function_exists('mime_content_type')) { |
|
86
|
|
|
return mime_content_type($file); |
|
87
|
|
|
} |
|
88
|
|
|
|
|
89
|
|
|
if ($info = @getimagesize($file)) { |
|
90
|
|
|
return($info['mime']); |
|
91
|
|
|
} |
|
92
|
|
|
|
|
93
|
|
|
return 'application/octet-stream'; |
|
94
|
|
|
} |
|
95
|
|
|
|
|
96
|
|
|
/** |
|
97
|
|
|
* @param $file |
|
98
|
|
|
* @return string |
|
99
|
|
|
* @throws \InvalidArgumentException |
|
100
|
|
|
*/ |
|
101
|
|
|
protected function base64($file) |
|
102
|
|
|
{ |
|
103
|
|
|
if (is_file($file) === false || is_readable($file) === false) { |
|
104
|
|
|
throw new \InvalidArgumentException(sprintf('Cannot read file %s', $file)); |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
return base64_encode(file_get_contents($file)); |
|
108
|
|
|
} |
|
109
|
|
|
} |
|
110
|
|
|
|
krichprollsch /
phpCssEmbed
