Viewing file:  EanExt.php (3.05 KB) -rw-r--r--
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<?php
namespace Mpdf\Barcode;
/**
* UPC-Based Extentions
* 2-Digit Ext.: Used to indicate magazines and newspaper issue numbers
* 5-Digit Ext.: Used to mark suggested retail price of books
*/
class EanExt extends \Mpdf\Barcode\AbstractBarcode implements \Mpdf\Barcode\BarcodeInterface
{
/**
* @param string $code
* @param int $length
* @param float $leftMargin
* @param float $rightMargin
* @param float $xDim
* @param float $barHeight
* @param float $separatorMargin
*/
public function __construct($code, $length, $leftMargin, $rightMargin, $xDim, $barHeight, $separatorMargin)
{
$this->init($code, $length);
$this->data['lightmL'] = $leftMargin; // LEFT light margin = x X-dim (http://www.gs1uk.org)
$this->data['lightmR'] = $rightMargin; // RIGHT light margin = x X-dim (http://www.gs1uk.org)
$this->data['nom-X'] = $xDim; // Nominal value for X-dim in mm (http://www.gs1uk.org)
$this->data['nom-H'] = $barHeight; // Nominal bar height in mm incl. numerals (http://www.gs1uk.org)
$this->data['sepM'] = $separatorMargin; // SEPARATION margin = x X-dim (http://web.archive.org/web/19990501035133/http://www.uc-council.org/d36-d.htm)
}
/**
* @param string $code
* @param int $length
*/
private function init($code, $length = 5)
{
// Padding
$code = str_pad($code, $length, '0', STR_PAD_LEFT);
// Calculate check digit
if ($length == 2) {
$r = $code % 4;
} elseif ($length == 5) {
$r = (3 * ($code[0] + $code[2] + $code[4])) + (9 * ($code[1] + $code[3]));
$r %= 10;
} else {
throw new \Mpdf\Barcode\BarcodeException(sprintf('Invalid EAN barcode value "%s"', $code));
}
// Convert digits to bars
$codes = [
'A' => [ // left odd parity
'0' => '0001101',
'1' => '0011001',
'2' => '0010011',
'3' => '0111101',
'4' => '0100011',
'5' => '0110001',
'6' => '0101111',
'7' => '0111011',
'8' => '0110111',
'9' => '0001011'],
'B' => [ // left even parity
'0' => '0100111',
'1' => '0110011',
'2' => '0011011',
'3' => '0100001',
'4' => '0011101',
'5' => '0111001',
'6' => '0000101',
'7' => '0010001',
'8' => '0001001',
'9' => '0010111']
];
$parities = [];
$parities[2] = [
'0' => ['A', 'A'],
'1' => ['A', 'B'],
'2' => ['B', 'A'],
'3' => ['B', 'B']
];
$parities[5] = [
'0' => ['B', 'B', 'A', 'A', 'A'],
'1' => ['B', 'A', 'B', 'A', 'A'],
'2' => ['B', 'A', 'A', 'B', 'A'],
'3' => ['B', 'A', 'A', 'A', 'B'],
'4' => ['A', 'B', 'B', 'A', 'A'],
'5' => ['A', 'A', 'B', 'B', 'A'],
'6' => ['A', 'A', 'A', 'B', 'B'],
'7' => ['A', 'B', 'A', 'B', 'A'],
'8' => ['A', 'B', 'A', 'A', 'B'],
'9' => ['A', 'A', 'B', 'A', 'B']
];
$p = $parities[$length][$r];
$seq = '1011'; // left guard bar
$seq .= $codes[$p[0]][$code[0]];
for ($i = 1; $i < $length; ++$i) {
$seq .= '01'; // separator
$seq .= $codes[$p[$i]][$code[$i]];
}
$bararray = ['code' => $code, 'maxw' => 0, 'maxh' => 1, 'bcode' => []];
$this->data = $this->binseqToArray($seq, $bararray);
}
public function getType()
{
return 'EAN EXT';
}
}
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