<?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: Ean13.php 22999 2010-09-23 19:43:14Z mikaelkael $

 */

/**

 * @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) 2005-2010 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);

            }

        }

    }

}