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<?php
/**
* @see https://github.com/zendframework/zend-barcode for the canonical source repository
* @copyright Copyright (c) 2005-2019 Zend Technologies USA Inc. (http://www.zend.com)
* @license https://github.com/zendframework/zend-barcode/blob/master/LICENSE.md New BSD License
*/
namespace Zend\Barcode\Object;
/**
* Class for generate Code39 barcode
*/
class Code39 extends AbstractObject
{
/**
* Coding map
* @var array
*/
protected $codingMap = [
'0' => '000110100',
'1' => '100100001',
'2' => '001100001',
'3' => '101100000',
'4' => '000110001',
'5' => '100110000',
'6' => '001110000',
'7' => '000100101',
'8' => '100100100',
'9' => '001100100',
'A' => '100001001',
'B' => '001001001',
'C' => '101001000',
'D' => '000011001',
'E' => '100011000',
'F' => '001011000',
'G' => '000001101',
'H' => '100001100',
'I' => '001001100',
'J' => '000011100',
'K' => '100000011',
'L' => '001000011',
'M' => '101000010',
'N' => '000010011',
'O' => '100010010',
'P' => '001010010',
'Q' => '000000111',
'R' => '100000110',
'S' => '001000110',
'T' => '000010110',
'U' => '110000001',
'V' => '011000001',
'W' => '111000000',
'X' => '010010001',
'Y' => '110010000',
'Z' => '011010000',
'-' => '010000101',
'.' => '110000100',
' ' => '011000100',
'$' => '010101000',
'/' => '010100010',
'+' => '010001010',
'%' => '000101010',
'*' => '010010100',
];
/**
* Partial check of Code39 barcode
* @return void
*/
protected function checkSpecificParams()
{
$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;
}
/**
* Set text to encode
* @param string $value
* @return self Provides a fluent interface
*/
public function setText($value)
{
$this->text = $value;
return $this;
}
/**
* 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 . '*';
}
return $text;
}
/**
* Prepare array to draw barcode
* @return array
*/
protected function prepareBarcode()
{
$text = str_split($this->getText());
$barcodeTable = [];
foreach ($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[] = [(int) $visible, $width, 0, 1];
$visible = ! $visible;
}
$barcodeTable[] = [0, $this->barThinWidth];
}
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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