<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

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

 * @version    $Id: Ean5.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * @see Zend_Barcode_Object_Ean13

 */

require_once 'Zend/Barcode/Object/Ean13.php';

/**

 * @see Zend_Validate_Barcode

 */

require_once 'Zend/Validate/Barcode.php';

/**

 * Class for generate Ean5 barcode

 *

 * @category   Zend

 * @package    Zend_Barcode

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

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

 */

class Zend_Barcode_Object_Ean5 extends Zend_Barcode_Object_Ean13

{

    protected $_parities = array(

        0 => array('B','B','A','A','A'),

        1 => array('B','A','B','A','A'),

        2 => array('B','A','A','B','A'),

        3 => array('B','A','A','A','B'),

        4 => array('A','B','B','A','A'),

        5 => array('A','A','B','B','A'),

        6 => array('A','A','A','B','B'),

        7 => array('A','B','A','B','A'),

        8 => array('A','B','A','A','B'),

        9 => array('A','A','B','A','B')

    );

    /**

     * Default options for Ean5 barcode

     * @return void

     */

    protected function _getDefaultOptions()

    {

        $this->_barcodeLength = 5;

    }

    /**

     * Width of the barcode (in pixels)

     * @return integer

     */

    protected function _calculateBarcodeWidth()

    {

        $quietZone       = $this->getQuietZone();

        $startCharacter  = (5 * $this->_barThinWidth) * $this->_factor;

        $middleCharacter = (2 * $this->_barThinWidth) * $this->_factor;

        $encodedData     = (7 * $this->_barThinWidth) * $this->_factor;

        return $quietZone + $startCharacter + ($this->_barcodeLength - 1) * $middleCharacter + $this->_barcodeLength * $encodedData + $quietZone;

    }

    /**

     * Prepare array to draw barcode

     * @return array

     */

    protected function _prepareBarcode()

    {

        $barcodeTable = array();

        // Start character (01011)

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

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

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

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

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

        $firstCharacter = true;

        $textTable = str_split($this->getText());

        // Characters

        for ($i = 0; $i < $this->_barcodeLength; $i++) {

            if ($firstCharacter) {

                $firstCharacter = false;

            } else {

                // Intermediate character (01)

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

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

            }

            $bars = str_split($this->_codingMap[$this->_getParity($i)][$textTable[$i]]);

            foreach ($bars as $b) {

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

            }

        }

        return $barcodeTable;

    }

    /**

     * Get barcode checksum

     *

     * @param  string $text

     * @return int

     */

    public function getChecksum($text)

    {

        $this->_checkText($text);

        $checksum = 0;

        for ($i = 0 ; $i < $this->_barcodeLength; $i ++) {

            $checksum += intval($text{$i}) * ($i % 2 ? 9 : 3);

        }

        return ($checksum % 10);

    }

    protected function _getParity($i)

    {

        $checksum = $this->getChecksum($this->getText());

        return $this->_parities[$checksum][$i];

    }

    /**

     * Retrieve text to encode

     * @return string

     */

    public function getText()

    {

        return $this->_addLeadingZeros($this->_text);

    }

}