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: /**
15:  * Validates a value using a regular expression.
16:  *
17:  * @category Jyxo
18:  * @package Jyxo_Input
19:  * @subpackage Validator
20:  * @copyright Copyright (c) 2005-2011 Jyxo, s.r.o.
21:  * @license https://github.com/jyxo/php/blob/master/license.txt
22:  * @author Jan Pěček
23:  */
24: class Jyxo_Input_Validator_Regex extends Jyxo_Input_Validator_AbstractValidator
25: {
26: 
27:     /**
28:      * Regular expression.
29:      *
30:      * @var string
31:      */
32:     protected $pattern;
33: 
34: 
35:     /**
36:      * Constructor.
37:      *
38:      * @param string $pattern Regular expression
39:      */
40:     public function __construct($pattern)
41:     {
42:         $this->setPattern($pattern);
43:     }
44: 
45:     /**
46:      * Sets the validation regular expression.
47:      *
48:      * @param string $pattern Regular expression
49:      * @return Jyxo_Input_Validator_Regex
50:      * @throws Jyxo_Input_Validator_Exception On empty regular expression
51:      */
52:     public function setPattern($pattern)
53:     {
54:         if (empty($pattern)) {
55:             throw new Jyxo_Input_Validator_Exception('Pattern could not be empty');
56:         }
57:         $this->pattern = (string) $pattern;
58: 
59:         return $this;
60:     }
61: 
62:     /**
63:      * Returns the validation regular expression.
64:      *
65:      * @return string
66:      */
67:     public function getPattern()
68:     {
69:         return $this->pattern;
70:     }
71: 
72:     /**
73:      * Validates a value.
74:      *
75:      * @param mixed $value Input value
76:      * @return boolean
77:      */
78:     public function isValid($value)
79:     {
80:         if (!preg_match($this->getPattern(), (string) $value)) {
81:             return false;
82:         }
83: 
84:         return true;
85:     }
86: 
87: }
88: