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: Code39.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_Code39 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 = '_code39'; |
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52 | |
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53 | /** |
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54 | * @var array |
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55 | */ |
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56 | protected $_check = array( |
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57 | '0' => 0, '1' => 1, '2' => 2, '3' => 3, '4' => 4, '5' => 5, '6' => 6, |
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58 | '7' => 7, '8' => 8, '9' => 9, 'A' => 10, 'B' => 11, 'C' => 12, 'D' => 13, |
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59 | 'E' => 14, 'F' => 15, 'G' => 16, 'H' => 17, 'I' => 18, 'J' => 19, 'K' => 20, |
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60 | 'L' => 21, 'M' => 22, 'N' => 23, 'O' => 24, 'P' => 25, 'Q' => 26, 'R' => 27, |
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61 | 'S' => 28, 'T' => 29, 'U' => 30, 'V' => 31, 'W' => 32, 'X' => 33, 'Y' => 34, |
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62 | 'Z' => 35, '-' => 36, '.' => 37, ' ' => 38, '$' => 39, '/' => 40, '+' => 41, |
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63 | '%' => 42, |
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64 | ); |
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65 | |
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66 | /** |
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67 | * Constructor |
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68 | * |
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69 | * Sets check flag to false. |
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70 | * |
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71 | * @return void |
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72 | */ |
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73 | public function __construct() |
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74 | { |
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75 | $this->setCheck(false); |
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76 | } |
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77 | |
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78 | /** |
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79 | * Validates the checksum (Modulo 43) |
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80 | * |
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81 | * @param string $value The barcode to validate |
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82 | * @return boolean |
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83 | */ |
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84 | protected function _code39($value) |
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85 | { |
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86 | $checksum = substr($value, -1, 1); |
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87 | $value = str_split(substr($value, 0, -1)); |
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88 | $count = 0; |
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89 | foreach($value as $char) { |
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90 | $count += $this->_check[$char]; |
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91 | } |
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92 | |
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93 | $mod = $count % 43; |
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94 | if ($mod == $this->_check[$checksum]) { |
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95 | return true; |
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96 | } |
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97 | |
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98 | return false; |
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99 | } |
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100 | } |
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