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1 <?php |
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2 /** |
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3 * Zend Framework |
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4 * |
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5 * LICENSE |
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6 * |
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7 * This source file is subject to the new BSD license that is bundled |
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8 * with this package in the file LICENSE.txt. |
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9 * It is also available through the world-wide-web at this URL: |
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10 * http://framework.zend.com/license/new-bsd |
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11 * If you did not receive a copy of the license and are unable to |
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12 * obtain it through the world-wide-web, please send an email |
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13 * to license@zend.com so we can send you a copy immediately. |
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14 * |
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15 * @category Zend |
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16 * @package Zend_Validate |
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17 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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18 * @license http://framework.zend.com/license/new-bsd New BSD License |
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19 * @version $Id: Code93.php 20785 2010-01-31 09:43:03Z mikaelkael $ |
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20 */ |
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21 |
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22 /** |
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23 * @see Zend_Validate_Barcode_AdapterAbstract |
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24 */ |
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25 require_once 'Zend/Validate/Barcode/AdapterAbstract.php'; |
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26 |
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27 /** |
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28 * @category Zend |
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29 * @package Zend_Validate |
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30 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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31 * @license http://framework.zend.com/license/new-bsd New BSD License |
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32 */ |
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33 class Zend_Validate_Barcode_Code93 extends Zend_Validate_Barcode_AdapterAbstract |
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34 { |
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35 /** |
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36 * Allowed barcode lengths |
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37 * @var integer |
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38 */ |
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39 protected $_length = -1; |
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40 |
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41 /** |
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42 * Allowed barcode characters |
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43 * @var string |
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44 */ |
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45 protected $_characters = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -.$/+%'; |
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46 |
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47 /** |
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48 * Checksum function |
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49 * @var string |
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50 */ |
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51 protected $_checksum = '_code93'; |
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52 |
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53 /** |
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54 * Note that the characters !"§& are only synonyms |
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55 * @var array |
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56 */ |
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57 protected $_check = array( |
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58 '0' => 0, '1' => 1, '2' => 2, '3' => 3, '4' => 4, '5' => 5, '6' => 6, |
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59 '7' => 7, '8' => 8, '9' => 9, 'A' => 10, 'B' => 11, 'C' => 12, 'D' => 13, |
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60 'E' => 14, 'F' => 15, 'G' => 16, 'H' => 17, 'I' => 18, 'J' => 19, 'K' => 20, |
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61 'L' => 21, 'M' => 22, 'N' => 23, 'O' => 24, 'P' => 25, 'Q' => 26, 'R' => 27, |
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62 'S' => 28, 'T' => 29, 'U' => 30, 'V' => 31, 'W' => 32, 'X' => 33, 'Y' => 34, |
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63 'Z' => 35, '-' => 36, '.' => 37, ' ' => 38, '$' => 39, '/' => 40, '+' => 41, |
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64 '%' => 42, '!' => 43, '"' => 44, '§' => 45, '&' => 46, |
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65 ); |
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66 |
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67 /** |
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68 * Constructor |
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69 * |
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70 * Sets check flag to false. |
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71 * |
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72 * @return void |
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73 */ |
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74 public function __construct() |
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75 { |
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76 $this->setCheck(false); |
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77 } |
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78 |
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79 /** |
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80 * Validates the checksum (Modulo CK) |
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81 * |
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82 * @param string $value The barcode to validate |
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83 * @return boolean |
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84 */ |
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85 protected function _code93($value) |
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86 { |
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87 $checksum = substr($value, -2, 2); |
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88 $value = str_split(substr($value, 0, -2)); |
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89 $count = 0; |
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90 $length = count($value) % 20; |
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91 foreach($value as $char) { |
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92 if ($length == 0) { |
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93 $length = 20; |
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94 } |
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95 |
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96 $count += $this->_check[$char] * $length; |
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97 --$length; |
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98 } |
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99 |
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100 $check = array_search(($count % 47), $this->_check); |
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101 $value[] = $check; |
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102 $count = 0; |
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103 $length = count($value) % 15; |
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104 foreach($value as $char) { |
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105 if ($length == 0) { |
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106 $length = 15; |
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107 } |
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108 |
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109 $count += $this->_check[$char] * $length; |
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110 --$length; |
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111 } |
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112 $check .= array_search(($count % 47), $this->_check); |
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113 |
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114 if ($check == $checksum) { |
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115 return true; |
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116 } |
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117 |
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118 return false; |
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119 } |
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120 } |