<?php
/**
* @see https://github.com/laminas/laminas-validator for the canonical source repository
* @copyright https://github.com/laminas/laminas-validator/blob/master/COPYRIGHT.md
* @license https://github.com/laminas/laminas-validator/blob/master/LICENSE.md New BSD License
*/
namespace Laminas\Validator\Barcode;
class Code93 extends AbstractAdapter
{
/**
* Note that the characters !"§& are only synonyms
* @var array
*/
protected $check = [
'0' => 0, '1' => 1, '2' => 2, '3' => 3, '4' => 4, '5' => 5, '6' => 6,
'7' => 7, '8' => 8, '9' => 9, 'A' => 10, 'B' => 11, 'C' => 12, 'D' => 13,
'E' => 14, 'F' => 15, 'G' => 16, 'H' => 17, 'I' => 18, 'J' => 19, 'K' => 20,
'L' => 21, 'M' => 22, 'N' => 23, 'O' => 24, 'P' => 25, 'Q' => 26, 'R' => 27,
'S' => 28, 'T' => 29, 'U' => 30, 'V' => 31, 'W' => 32, 'X' => 33, 'Y' => 34,
'Z' => 35, '-' => 36, '.' => 37, ' ' => 38, '$' => 39, '/' => 40, '+' => 41,
'%' => 42, '!' => 43, '"' => 44, '§' => 45, '&' => 46,
];
/**
* Constructor for this barcode adapter
*/
public function __construct()
{
$this->setLength(-1);
$this->setCharacters('0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -.$/+%');
$this->setChecksum('code93');
$this->useChecksum(false);
}
/**
* Validates the checksum (Modulo CK)
*
* @param string $value The barcode to validate
* @return bool
*/
protected function code93($value)
{
$checksum = substr($value, -2, 2);
$value = str_split(substr($value, 0, -2));
$count = 0;
$length = count($value) % 20;
foreach ($value as $char) {
if ($length == 0) {
$length = 20;
}
$count += $this->check[$char] * $length;
--$length;
}
$check = array_search(($count % 47), $this->check);
$value[] = $check;
$count = 0;
$length = count($value) % 15;
foreach ($value as $char) {
if ($length == 0) {
$length = 15;
}
$count += $this->check[$char] * $length;
--$length;
}
$check .= array_search(($count % 47), $this->check);
if ($check == $checksum) {
return true;
}
return false;
}
}