1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_Barcode

    17  * @subpackage Object

    18  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    19  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    20  * @version    $Id: Code25.php 20096 2010-01-06 02:05:09Z bkarwin $

    21  */

    22 

    23 /**

    24  * @see Zend_Barcode_Object_ObjectAbstract

    25  */

    26 require_once 'Zend/Barcode/Object/ObjectAbstract.php';

    27 

    28 /**

    29  * @see Zend_Validate_Barcode

    30  */

    31 require_once 'Zend/Validate/Barcode.php';

    32 

    33 /**

    34  * Class for generate Interleaved 2 of 5 barcode

    35  *

    36  * @category   Zend

    37  * @package    Zend_Barcode

    38  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    39  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    40  */

    41 class Zend_Barcode_Object_Code25 extends Zend_Barcode_Object_ObjectAbstract

    42 {

    43     /**

    44      * Coding map

    45      * - 0 = narrow bar

    46      * - 1 = wide bar

    47      * @var array

    48      */

    49     protected $_codingMap = array(

    50         '0' => '00110',

    51         '1' => '10001',

    52         '2' => '01001',

    53         '3' => '11000',

    54         '4' => '00101',

    55         '5' => '10100',

    56         '6' => '01100',

    57         '7' => '00011',

    58         '8' => '10010',

    59         '9' => '01010',

    60     );

    61 

    62     /**

    63      * Width of the barcode (in pixels)

    64      * @return integer

    65      */

    66     protected function _calculateBarcodeWidth()

    67     {

    68         $quietZone       = $this->getQuietZone();

    69         $startCharacter  = (2 * $this->_barThickWidth + 4 * $this->_barThinWidth) * $this->_factor;

    70         $characterLength = (3 * $this->_barThinWidth + 2 * $this->_barThickWidth + 5 * $this->_barThinWidth)

    71                          * $this->_factor;

    72         $encodedData     = strlen($this->getText()) * $characterLength;

    73         $stopCharacter   = (2 * $this->_barThickWidth + 4 * $this->_barThinWidth) * $this->_factor;

    74         return $quietZone + $startCharacter + $encodedData + $stopCharacter + $quietZone;

    75     }

    76 

    77     /**

    78      * Partial check of interleaved 2 of 5 barcode

    79      * @return void

    80      */

    81     protected function _checkParams()

    82     {

    83         $this->_checkRatio();

    84     }

    85 

    86     /**

    87      * Prepare array to draw barcode

    88      * @return array

    89      */

    90     protected function _prepareBarcode()

    91     {

    92         $barcodeTable = array();

    93 

    94         // Start character (30301)

    95         $barcodeTable[] = array(1 , $this->_barThickWidth , 0 , 1);

    96         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , 1);

    97         $barcodeTable[] = array(1 , $this->_barThickWidth , 0 , 1);

    98         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , 1);

    99         $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , 1);

   100         $barcodeTable[] = array(0 , 1);

   101 

   102         $text = str_split($this->getText());

   103         foreach ($text as $char) {

   104             $barcodeChar = str_split($this->_codingMap[$char]);

   105             foreach ($barcodeChar as $c) {

   106                 /* visible, width, top, length */

   107                 $width = $c ? $this->_barThickWidth : $this->_barThinWidth;

   108                 $barcodeTable[] = array(1 , $width , 0 , 1);

   109                 $barcodeTable[] = array(0 , 1);

   110             }

   111         }

   112 

   113         // Stop character (30103)

   114         $barcodeTable[] = array(1 , $this->_barThickWidth , 0 , 1);

   115         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , 1);

   116         $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , 1);

   117         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , 1);

   118         $barcodeTable[] = array(1 , $this->_barThickWidth , 0 , 1);

   119         return $barcodeTable;

   120     }

   121 

   122     /**

   123      * Get barcode checksum

   124      *

   125      * @param  string $text

   126      * @return int

   127      */

   128     public function getChecksum($text)

   129     {

   130         $this->_checkText($text);

   131         $factor   = 3;

   132         $checksum = 0;

   133 

   134         for ($i = strlen($text); $i > 0; $i --) {

   135             $checksum += intval($text{$i - 1}) * $factor;

   136             $factor    = 4 - $factor;

   137         }

   138 

   139         $checksum = (10 - ($checksum % 10)) % 10;

   140 

   141         return $checksum;

   142     }

   143 }