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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Validate
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Validate_Barcode_AdapterAbstract
  */
 // require_once 'Zend/Validate/Barcode/AdapterAbstract.php';
 
 /**
  * @category   Zend
  * @package    Zend_Validate
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Validate_Barcode_Code39 extends Zend_Validate_Barcode_AdapterAbstract
 {
     /**
      * Allowed barcode lengths
      * @var integer
      */
     protected $_length = -1;
 
     /**
      * Allowed barcode characters
      * @var string
      */
     protected $_characters = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -.$/+%';
 
     /**
      * Checksum function
      * @var string
      */
     protected $_checksum = '_code39';
 
     /**
      * @var array
      */
     protected $_check = array(
         '0' =>  0, '1' =>  1, '2' =>  2, '3' =>  3, '4' =>  4, '5' =>  5, '6' =>  6,
         '7' =>  7, '8' =>  8, '9' =>  9, 'A' => 10, 'B' => 11, 'C' => 12, 'D' => 13,
         'E' => 14, 'F' => 15, 'G' => 16, 'H' => 17, 'I' => 18, 'J' => 19, 'K' => 20,
         'L' => 21, 'M' => 22, 'N' => 23, 'O' => 24, 'P' => 25, 'Q' => 26, 'R' => 27,
         'S' => 28, 'T' => 29, 'U' => 30, 'V' => 31, 'W' => 32, 'X' => 33, 'Y' => 34,
         'Z' => 35, '-' => 36, '.' => 37, ' ' => 38, '$' => 39, '/' => 40, '+' => 41,
         '%' => 42,
     );
 
     /**
      * Constructor
      *
      * Sets check flag to false.
      */
     public function __construct()
     {
         $this->setCheck(false);
     }
 
     /**
      * Validates the checksum (Modulo 43)
      *
      * @param  string $value The barcode to validate
      * @return boolean
      */
     protected function _code39($value)
     {
         $checksum = substr($value, -1, 1);
         $value    = str_split(substr($value, 0, -1));
         $count    = 0;
         foreach($value as $char) {
             $count += $this->_check[$char];
         }
 
         $mod = $count % 43;
         if ($mod == $this->_check[$checksum]) {
             return true;
         }
 
         return false;
     }
 }