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<?php
namespace Mpdf\Barcode;
/**
* Standard 2 of 5 barcodes.
* Used in airline ticket marking, photofinishing
* Contains digits (0 to 9) and encodes the data only in the width of bars.
*/
class S25 extends \Mpdf\Barcode\AbstractBarcode implements \Mpdf\Barcode\BarcodeInterface
{
/**
* @param string $code
* @param bool $checksum
*/
public function __construct($code, $checksum = false, $quiet_zone_left = null, $quiet_zone_right = null)
{
$this->init($code, $checksum);
$this->data['nom-X'] = 0.381; // Nominal value for X-dim (bar width) in mm (2 X min. spec.)
$this->data['nom-H'] = 10; // Nominal value for Height of Full bar in mm (non-spec.)
$this->data['lightmL'] = ($quiet_zone_left !== null ? $quiet_zone_left : 10); // LEFT light margin = x X-dim (spec.)
$this->data['lightmR'] = ($quiet_zone_right !== null ? $quiet_zone_right : 10); // RIGHT light margin = x X-dim (spec.)
$this->data['lightTB'] = 0; // TOP/BOTTOM light margin = x X-dim (non-spec.)
}
/**
* @param string $code
* @param bool $checksum
*/
private function init($code, $checksum)
{
$chr = [
'0' => '10101110111010',
'1' => '11101010101110',
'2' => '10111010101110',
'3' => '11101110101010',
'4' => '10101110101110',
'5' => '11101011101010',
'6' => '10111011101010',
'7' => '10101011101110',
'8' => '10101110111010',
'9' => '10111010111010',
];
$checkdigit = '';
if ($checksum) {
// add checksum
$checkdigit = $this->checksum($code);
$code .= $checkdigit;
}
if ((strlen($code) % 2) != 0) {
// add leading zero if code-length is odd
$code = '0' . $code;
}
$seq = '11011010';
$clen = strlen($code);
for ($i = 0; $i < $clen; ++$i) {
$digit = $code[$i];
if (!isset($chr[$digit])) {
// invalid character
throw new \Mpdf\Barcode\BarcodeException(sprintf('Invalid character "%s" in S25 barcode value "%s"', $digit, $code));
}
$seq .= $chr[$digit];
}
$seq .= '1101011';
$bararray = ['code' => $code, 'maxw' => 0, 'maxh' => 1, 'bcode' => []];
$bararray['checkdigit'] = $checkdigit;
$this->data = $this->binseqToArray($seq, $bararray);
}
/**
* Checksum for standard 2 of 5 barcodes.
*
* @param string $code
*
* @return int
*/
private function checksum($code)
{
$len = strlen($code);
$sum = 0;
for ($i = 0; $i < $len; $i += 2) {
$sum += $code[$i];
}
$sum *= 3;
for ($i = 1; $i < $len; $i += 2) {
$sum += ($code[$i]);
}
$r = $sum % 10;
if ($r > 0) {
$r = (10 - $r);
}
return $r;
}
/**
* @inheritdoc
*/
public function getType()
{
return 'S25';
}
}
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