1: <?php
 2: 
 3: /*
 4:  * This file is part of the Symfony package.
 5:  *
 6:  * (c) Fabien Potencier <fabien@symfony.com>
 7:  *
 8:  * For the full copyright and license information, please view the LICENSE
 9:  * file that was distributed with this source code.
10:  */
11: 
12: namespace Symfony\Component\Finder\Iterator;
13: 
14: /**
15:  * FilecontentFilterIterator filters files by their contents using patterns (regexps or strings).
16:  *
17:  * @author Fabien Potencier  <fabien@symfony.com>
18:  * @author Włodzimierz Gajda <gajdaw@gajdaw.pl>
19:  */
20: class FilecontentFilterIterator extends MultiplePcreFilterIterator
21: {
22:     /**
23:      * Filters the iterator values.
24:      *
25:      * @return Boolean true if the value should be kept, false otherwise
26:      */
27:     public function accept()
28:     {
29:         if (!$this->matchRegexps && !$this->noMatchRegexps) {
30:             return true;
31:         }
32: 
33:         $fileinfo = $this->current();
34: 
35:         if ($fileinfo->isDir() || !$fileinfo->isReadable()) {
36:             return false;
37:         }
38: 
39:         $content = $fileinfo->getContents();
40:         if (!$content) {
41:             return false;
42:         }
43: 
44:         // should at least not match one rule to exclude
45:         foreach ($this->noMatchRegexps as $regex) {
46:             if (preg_match($regex, $content)) {
47:                 return false;
48:             }
49:         }
50: 
51:         // should at least match one rule
52:         $match = true;
53:         if ($this->matchRegexps) {
54:             $match = false;
55:             foreach ($this->matchRegexps as $regex) {
56:                 if (preg_match($regex, $content)) {
57:                     return true;
58:                 }
59:             }
60:         }
61: 
62:         return $match;
63:     }
64: 
65:     /**
66:      * Converts string to regexp if necessary.
67:      *
68:      * @param string $str Pattern: string or regexp
69:      *
70:      * @return string regexp corresponding to a given string or regexp
71:      */
72:     protected function toRegex($str)
73:     {
74:         return $this->isRegex($str) ? $str : '/'.preg_quote($str, '/').'/';
75:     }
76: }
77: