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 1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (http://nette.org)
 5:  *
 6:  * Copyright (c) 2004, 2011 David Grudl (http://davidgrudl.com)
 7:  *
 8:  * For the full copyright and license information, please view
 9:  * the file license.txt that was distributed with this source code.
10:  * @package Nette\Utils
11:  */
12: 
13: 
14: 
15: /**
16:  * Mime type detector.
17:  *
18:  * @author     David Grudl
19:  * @package Nette\Utils
20:  */
21: final class MimeTypeDetector
22: {
23: 
24:     /**
25:      * Static class - cannot be instantiated.
26:      */
27:     final public function __construct()
28:     {
29:         throw new StaticClassException;
30:     }
31: 
32: 
33: 
34:     /**
35:      * Returns the MIME content type of file.
36:      * @param  string
37:      * @return string
38:      */
39:     public static function fromFile($file)
40:     {
41:         if (!is_file($file)) {
42:             throw new FileNotFoundException("File '$file' not found.");
43:         }
44: 
45:         $info = @getimagesize($file); // @ - files smaller than 12 bytes causes read error
46:         if (isset($info['mime'])) {
47:             return $info['mime'];
48: 
49:         } elseif (extension_loaded('fileinfo')) {
50:             $type = preg_replace('#[\s;].*$#', '', finfo_file(finfo_open(FILEINFO_MIME), $file));
51: 
52:         } elseif (function_exists('mime_content_type')) {
53:             $type = mime_content_type($file);
54:         }
55: 
56:         return isset($type) && preg_match('#^\S+/\S+$#', $type) ? $type : 'application/octet-stream';
57:     }
58: 
59: 
60: 
61:     /**
62:      * Returns the MIME content type of file.
63:      * @param  string
64:      * @return string
65:      */
66:     public static function fromString($data)
67:     {
68:         if (extension_loaded('fileinfo') && preg_match('#^(\S+/[^\s;]+)#', finfo_buffer(finfo_open(FILEINFO_MIME), $data), $m)) {
69:             return $m[1];
70: 
71:         } elseif (strncmp($data, "\xff\xd8", 2) === 0) {
72:             return 'image/jpeg';
73: 
74:         } elseif (strncmp($data, "\x89PNG", 4) === 0) {
75:             return 'image/png';
76: 
77:         } elseif (strncmp($data, "GIF", 3) === 0) {
78:             return 'image/gif';
79: 
80:         } else {
81:             return 'application/octet-stream';
82:         }
83:     }
84: 
85: }
86: 
Nette Framework 2.0beta1 (for PHP 5.2) API API documentation generated by ApiGen 2.3.0