<?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: Code25.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * @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 Interleaved 2 of 5 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_Code25 extends Zend_Barcode_Object_ObjectAbstract

{

    /**

     * Coding map

     * - 0 = narrow bar

     * - 1 = wide bar

     * @var array

     */

    protected $_codingMap = array(

        '0' => '00110',

        '1' => '10001',

        '2' => '01001',

        '3' => '11000',

        '4' => '00101',

        '5' => '10100',

        '6' => '01100',

        '7' => '00011',

        '8' => '10010',

        '9' => '01010',

    );

    /**

     * Width of the barcode (in pixels)

     * @return integer

     */

    protected function _calculateBarcodeWidth()

    {

        $quietZone       = $this->getQuietZone();

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

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

                         * $this->_factor;

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

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

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

    }

    /**

     * Partial check of interleaved 2 of 5 barcode

     * @return void

     */

    protected function _checkParams()

    {

        $this->_checkRatio();

    }

    /**

     * Prepare array to draw barcode

     * @return array

     */

    protected function _prepareBarcode()

    {

        $barcodeTable = array();

        // Start character (30301)

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

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

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

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

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

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

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

        foreach ($text as $char) {

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

            foreach ($barcodeChar as $c) {

                /* visible, width, top, length */

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

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

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

            }

        }

        // Stop character (30103)

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

        $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->_barThickWidth , 0 , 1);

        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;

    }

}