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<?php
namespace Mpdf\Barcode;
/**
* MSI - Variation of Plessey code, with similar applications
* Contains digits (0 to 9) and encodes the data only in the width of bars.
*/
class Msi extends \Mpdf\Barcode\AbstractBarcode implements \Mpdf\Barcode\BarcodeInterface
{
/**
* @param int $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 : 12); // LEFT light margin = x X-dim (spec.)
$this->data['lightmR'] = ($quiet_zone_right !== null ? $quiet_zone_right : 12); // RIGHT light margin = x X-dim (spec.)
$this->data['lightTB'] = 0; // TOP/BOTTOM light margin = x X-dim (non-spec.)
}
/**
* @param int $code
* @param bool $checksum
*/
private function init($code, $checksum)
{
$chr = [
'0' => '100100100100',
'1' => '100100100110',
'2' => '100100110100',
'3' => '100100110110',
'4' => '100110100100',
'5' => '100110100110',
'6' => '100110110100',
'7' => '100110110110',
'8' => '110100100100',
'9' => '110100100110',
'A' => '110100110100',
'B' => '110100110110',
'C' => '110110100100',
'D' => '110110100110',
'E' => '110110110100',
'F' => '110110110110',
];
$checkdigit = '';
if ($checksum) {
// add checksum
$clen = strlen($code);
$p = 2;
$check = 0;
for ($i = ($clen - 1); $i >= 0; --$i) {
$check += (hexdec($code[$i]) * $p);
++$p;
if ($p > 7) {
$p = 2;
}
}
$check %= 11;
if ($check > 0) {
$check = 11 - $check;
}
$code .= $check;
$checkdigit = $check;
}
$seq = '110'; // left guard
$clen = strlen($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 MSI barcode value "%s"', $digit, $code));
}
$seq .= $chr[$digit];
}
$seq .= '1001'; // right guard
$bararray = ['code' => $code, 'maxw' => 0, 'maxh' => 1, 'bcode' => []];
$bararray['checkdigit'] = $checkdigit;
$this->data = $this->binseqToArray($seq, $bararray);
}
/**
* @inheritdoc
*/
public function getType()
{
return 'MSI';
}
}