interface/modules/zend_modules/library/Zend/Validator/Barcode/Code39.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Validator\Barcode;
  11
  12 class Code39 extends AbstractAdapter
  13 {
  14     /**
  15      * @var array
  16      */
  17     protected $check = array(
  18         '0' =>  0, '1' =>  1, '2' =>  2, '3' =>  3, '4' =>  4, '5' =>  5, '6' =>  6,
  19         '7' =>  7, '8' =>  8, '9' =>  9, 'A' => 10, 'B' => 11, 'C' => 12, 'D' => 13,
  20         'E' => 14, 'F' => 15, 'G' => 16, 'H' => 17, 'I' => 18, 'J' => 19, 'K' => 20,
  21         'L' => 21, 'M' => 22, 'N' => 23, 'O' => 24, 'P' => 25, 'Q' => 26, 'R' => 27,
  22         'S' => 28, 'T' => 29, 'U' => 30, 'V' => 31, 'W' => 32, 'X' => 33, 'Y' => 34,
  23         'Z' => 35, '-' => 36, '.' => 37, ' ' => 38, '$' => 39, '/' => 40, '+' => 41,
  24         '%' => 42,
  25     );
  26
  27     /**
  28      * Constructor for this barcode adapter
  29      */
  30     public function __construct()
  31     {
  32         $this->setLength(-1);
  33         $this->setCharacters('0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -.$/+%');
  34         $this->setChecksum('code39');
  35         $this->useChecksum(false);
  36     }
  37
  38     /**
  39      * Validates the checksum (Modulo 43)
  40      *
  41      * @param  string $value The barcode to validate
  42      * @return bool
  43      */
  44     protected function code39($value)
  45     {
  46         $checksum = substr($value, -1, 1);
  47         $value    = str_split(substr($value, 0, -1));
  48         $count    = 0;
  49         foreach ($value as $char) {
  50             $count += $this->check[$char];
  51         }
  52
  53         $mod = $count % 43;
  54         if ($mod == $this->check[$checksum]) {
  55             return true;
  56         }
  57
  58         return false;
  59     }
  60 }