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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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Code39.php 21658 2010-03-27 14:29:57Z 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 Code39 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_Code39 extends Zend_Barcode_Object_ObjectAbstract
{
/**
* Coding map
* @var array
*/
protected $_codingMap = array(
'0' => '000110100',
'1' => '100100001',
'2' => '001100001',
'3' => '101100000',
'4' => '000110001',
'5' => '100110000',
'6' => '001110000',
'7' => '000100101',
'8' => '100100100',
'9' => '001100100',
'A' => '100001001',
'B' => '001001001',
'C' => '101001000',
'D' => '000011001',
'E' => '100011000',
'F' => '001011000',
'G' => '000001101',
'H' => '100001100',
'I' => '001001100',
'J' => '000011100',
'K' => '100000011',
'L' => '001000011',
'M' => '101000010',
'N' => '000010011',
'O' => '100010010',
'P' => '001010010',
'Q' => '000000111',
'R' => '100000110',
'S' => '001000110',
'T' => '000010110',
'U' => '110000001',
'V' => '011000001',
'W' => '111000000',
'X' => '010010001',
'Y' => '110010000',
'Z' => '011010000',
'-' => '010000101',
'.' => '110000100',
' ' => '011000100',
'$' => '010101000',
'/' => '010100010',
'+' => '010001010',
'%' => '000101010',
'*' => '010010100',
);
/**
* Partial check of Code39 barcode
* @return void
*/
protected function _checkParams()
{
$this->_checkRatio();
}
/**
* Width of the barcode (in pixels)
* @return int
*/
protected function _calculateBarcodeWidth()
{
$quietZone = $this->getQuietZone();
$characterLength = (6 * $this->_barThinWidth + 3 * $this->_barThickWidth + 1) * $this->_factor;
$encodedData = strlen($this->getText()) * $characterLength - $this->_factor;
return $quietZone + $encodedData + $quietZone;
}
/**
* Retrieve text to display
* @return string
*/
public function getText()
{
return '*' . parent::getText() . '*';
}
/**
* Retrieve text to display
* @return string
*/
public function getTextToDisplay()
{
$text = parent::getTextToDisplay();
if (substr($text, 0, 1) != '*' && substr($text, -1) != '*') {
return '*' . $text . '*';
} else {
return $text;
}
}
/**
* Prepare array to draw barcode
* @return array
*/
protected function _prepareBarcode()
{
$text = str_split($this->getText());
$barcodeTable = array();
foreach ($text as $char) {
$barcodeChar = str_split($this->_codingMap[$char]);
$visible = true;
foreach ($barcodeChar as $c) {
/* visible, width, top, length */
$width = $c ? $this->_barThickWidth : $this->_barThinWidth;
$barcodeTable[] = array((int) $visible, $width, 0, 1);
$visible = ! $visible;
}
$barcodeTable[] = array(0 , 1);
}
return $barcodeTable;
}
/**
* Get barcode checksum
*
* @param string $text
* @return int
*/
public function getChecksum($text)
{
$this->_checkText($text);
$text = str_split($text);
$charset = array_flip(array_keys($this->_codingMap));
$checksum = 0;
foreach ($text as $character) {
$checksum += $charset[$character];
}
return array_search(($checksum % 43), $charset);
}
}
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