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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 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:  */
11: 
12: namespace Nette\Utils;
13: 
14: use Nette;
15: 
16: 
17: /**
18:  * Mime type detector.
19:  *
20:  * @author     David Grudl
21:  */
22: final class MimeTypeDetector
23: {
24: 
25:     /**
26:      * Static class - cannot be instantiated.
27:      */
28:     final public function __construct()
29:     {
30:         throw new Nette\StaticClassException;
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 Nette\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;].*\z#', '', 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+\z#', $type) ? $type : 'application/octet-stream';
57:     }
58: 
59: 
60:     /**
61:      * Returns the MIME content type of file.
62:      * @param  string
63:      * @return string
64:      */
65:     public static function fromString($data)
66:     {
67:         if (extension_loaded('fileinfo') && preg_match('#^(\S+/[^\s;]+)#', finfo_buffer(finfo_open(FILEINFO_MIME), $data), $m)) {
68:             return $m[1];
69: 
70:         } elseif (strncmp($data, "\xff\xd8", 2) === 0) {
71:             return 'image/jpeg';
72: 
73:         } elseif (strncmp($data, "\x89PNG", 4) === 0) {
74:             return 'image/png';
75: 
76:         } elseif (strncmp($data, "GIF", 3) === 0) {
77:             return 'image/gif';
78: 
79:         } else {
80:             return 'application/octet-stream';
81:         }
82:     }
83: 
84: }
85: 
Nette Framework 2.0.12 API API documentation generated by ApiGen 2.8.0