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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_Barcode
  * @subpackage Object
  * @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_Barcode_Object_ObjectAbstract
  */
 // require_once 'Zend/Barcode/Object/ObjectAbstract.php';
 
 /**
  * @see Zend_Validate_Barcode
  */
 // require_once 'Zend/Validate/Barcode.php';
 
 /**
  * Class for generate Ean13 barcode
  *
  * @category   Zend
  * @package    Zend_Barcode
  * @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_Barcode_Object_Ean13 extends Zend_Barcode_Object_ObjectAbstract
 {
 
     /**
      * Coding map
      * - 0 = narrow bar
      * - 1 = wide bar
      * @var array
      */
     protected $_codingMap = array(
         'A' => array(
             0 => "0001101", 1 => "0011001", 2 => "0010011", 3 => "0111101", 4 => "0100011",
             5 => "0110001", 6 => "0101111", 7 => "0111011", 8 => "0110111", 9 => "0001011"
         ),
         'B' => array(
             0 => "0100111", 1 => "0110011", 2 => "0011011", 3 => "0100001", 4 => "0011101",
             5 => "0111001", 6 => "0000101", 7 => "0010001", 8 => "0001001", 9 => "0010111"
         ),
         'C' => array(
             0 => "1110010", 1 => "1100110", 2 => "1101100", 3 => "1000010", 4 => "1011100",
             5 => "1001110", 6 => "1010000", 7 => "1000100", 8 => "1001000", 9 => "1110100"
         ));
 
     protected $_parities = array(
         0 => array('A','A','A','A','A','A'),
         1 => array('A','A','B','A','B','B'),
         2 => array('A','A','B','B','A','B'),
         3 => array('A','A','B','B','B','A'),
         4 => array('A','B','A','A','B','B'),
         5 => array('A','B','B','A','A','B'),
         6 => array('A','B','B','B','A','A'),
         7 => array('A','B','A','B','A','B'),
         8 => array('A','B','A','B','B','A'),
         9 => array('A','B','B','A','B','A')
     );
 
     /**
      * Default options for Postnet barcode
      * @return void
      */
     protected function _getDefaultOptions()
     {
         $this->_barcodeLength = 13;
         $this->_mandatoryChecksum = true;
         $this->_mandatoryQuietZones = true;
     }
 
     /**
      * Width of the barcode (in pixels)
      * @return integer
      */
     protected function _calculateBarcodeWidth()
     {
         $quietZone       = $this->getQuietZone();
         $startCharacter  = (3 * $this->_barThinWidth) * $this->_factor;
         $middleCharacter = (5 * $this->_barThinWidth) * $this->_factor;
         $stopCharacter   = (3 * $this->_barThinWidth) * $this->_factor;
         $encodedData     = (7 * $this->_barThinWidth) * $this->_factor * 12;
         return $quietZone + $startCharacter + $middleCharacter + $encodedData + $stopCharacter + $quietZone;
     }
 
     /**
      * Partial check of interleaved EAN/UPC barcode
      * @return void
      */
     protected function _checkParams()
     {}
 
     /**
      * Prepare array to draw barcode
      * @return array
      */
     protected function _prepareBarcode()
     {
         $barcodeTable = array();
         $height = ($this->_drawText) ? 1.1 : 1;
 
         // Start character (101)
         $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);
         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);
         $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);
 
         $textTable = str_split($this->getText());
         $parity = $this->_parities[$textTable[0]];
 
         // First part
         for ($i = 1; $i < 7; $i++) {
             $bars = str_split($this->_codingMap[$parity[$i - 1]][$textTable[$i]]);
             foreach ($bars as $b) {
                 $barcodeTable[] = array($b , $this->_barThinWidth , 0 , 1);
             }
         }
 
         // Middle character (01010)
         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);
         $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);
         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);
         $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);
         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);
 
         // Second part
         for ($i = 7; $i < 13; $i++) {
             $bars = str_split($this->_codingMap['C'][$textTable[$i]]);
             foreach ($bars as $b) {
                 $barcodeTable[] = array($b , $this->_barThinWidth , 0 , 1);
             }
         }
 
         // Stop character (101)
         $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);
         $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);
         $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);
         return $barcodeTable;
     }
 
     /**
      * Get barcode checksum
      *
      * @param  string $text
      * @return int
      */
     public function getChecksum($text)
     {
         $this->_checkText($text);
         $factor   = 3;
         $checksum = 0;
 
         for ($i = strlen($text); $i > 0; $i --) {
             $checksum += intval($text{$i - 1}) * $factor;
             $factor    = 4 - $factor;
         }
 
         $checksum = (10 - ($checksum % 10)) % 10;
 
         return $checksum;
     }
 
     /**
      * Partial function to draw text
      * @return void
      */
     protected function _drawText()
     {
         if (get_class($this) == 'Zend_Barcode_Object_Ean13') {
             $this->_drawEan13Text();
         } else {
             parent::_drawText();
         }
     }
 
     protected function _drawEan13Text()
     {
         if ($this->_drawText) {
             $text = $this->getTextToDisplay();
             $characterWidth = (7 * $this->_barThinWidth) * $this->_factor;
             $leftPosition = $this->getQuietZone() - $characterWidth;
             for ($i = 0; $i < $this->_barcodeLength; $i ++) {
                 $this->_addText(
                     $text{$i},
                     $this->_fontSize * $this->_factor,
                     $this->_rotate(
                         $leftPosition,
                         (int) $this->_withBorder * 2
                             + $this->_factor * ($this->_barHeight + $this->_fontSize) + 1
                     ),
                     $this->_font,
                     $this->_foreColor,
                     'left',
                     - $this->_orientation
                 );
                 switch ($i) {
                     case 0:
                         $factor = 3;
                         break;
                     case 6:
                         $factor = 4;
                         break;
                     default:
                         $factor = 0;
                 }
                 $leftPosition = $leftPosition + $characterWidth + ($factor * $this->_barThinWidth * $this->_factor);
             }
         }
     }
 }