1: <?php
 2: 
 3: /**
 4:  * Jyxo PHP Library
 5:  *
 6:  * LICENSE
 7:  *
 8:  * This source file is subject to the new BSD license that is bundled
 9:  * with this package in the file license.txt.
10:  * It is also available through the world-wide-web at this URL:
11:  * https://github.com/jyxo/php/blob/master/license.txt
12:  */
13: 
14: namespace Jyxo\Input\Validator;
15: 
16: /**
17:  * Validates a value using a regular expression.
18:  *
19:  * @category Jyxo
20:  * @package Jyxo\Input
21:  * @subpackage Validator
22:  * @copyright Copyright (c) 2005-2011 Jyxo, s.r.o.
23:  * @license https://github.com/jyxo/php/blob/master/license.txt
24:  * @author Jan Pěček
25:  */
26: class Regex extends \Jyxo\Input\Validator\AbstractValidator
27: {
28: 
29:     /**
30:      * Regular expression.
31:      *
32:      * @var string
33:      */
34:     protected $pattern;
35: 
36: 
37:     /**
38:      * Constructor.
39:      *
40:      * @param string $pattern Regular expression
41:      */
42:     public function __construct($pattern)
43:     {
44:         $this->setPattern($pattern);
45:     }
46: 
47:     /**
48:      * Sets the validation regular expression.
49:      *
50:      * @param string $pattern Regular expression
51:      * @return \Jyxo\Input\Validator\Regex
52:      * @throws \Jyxo\Input\Validator\Exception On empty regular expression
53:      */
54:     public function setPattern($pattern)
55:     {
56:         if (empty($pattern)) {
57:             throw new Exception('Pattern could not be empty');
58:         }
59:         $this->pattern = (string) $pattern;
60: 
61:         return $this;
62:     }
63: 
64:     /**
65:      * Returns the validation regular expression.
66:      *
67:      * @return string
68:      */
69:     public function getPattern()
70:     {
71:         return $this->pattern;
72:     }
73: 
74:     /**
75:      * Validates a value.
76:      *
77:      * @param mixed $value Input value
78:      * @return boolean
79:      */
80:     public function isValid($value)
81:     {
82:         if (!preg_match($this->getPattern(), (string) $value)) {
83:             return false;
84:         }
85: 
86:         return true;
87:     }
88: 
89: }
90: