<?php
declare(strict_types=1);
namespace BarcodeBakery\Barcode;
use BarcodeBakery\Common\BCGBarcode1D;
use BarcodeBakery\Common\BCGParseException;
class BCGcode11 extends BCGBarcode1D
{
public function __construct()
{
parent::__construct();
$this->keys = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-');
$this->code = array( '000010',
'100010',
'010010',
'110000',
'001010',
'101000',
'011000',
'000110',
'100100',
'100000',
'001000'
);
}
public function draw($im)
{
$this->drawChar($im, '001100', true);
$c = strlen($this->text);
for ($i = 0; $i < $c; $i++) {
$this->drawChar($im, $this->findCode($this->text[$i]), true);
}
$this->calculateChecksum();
$c = count($this->checksumValue);
for ($i = 0; $i < $c; $i++) {
$this->drawChar($im, $this->code[$this->checksumValue[$i]], true);
}
$this->drawChar($im, '00110', true);
$this->drawText($im, 0, 0, $this->positionX, $this->thickness);
}
public function getDimension($w, $h)
{
$startlength = 8;
$textlength = 0;
$c = strlen($this->text);
for ($i = 0; $i < $c; $i++) {
$textlength += $this->getIndexLength($this->findIndex($this->text[$i]));
}
$checksumlength = 0;
$this->calculateChecksum();
$c = count($this->checksumValue);
for ($i = 0; $i < $c; $i++) {
$checksumlength += $this->getIndexLength($this->checksumValue[$i]);
}
$endlength = 7;
$w += $startlength + $textlength + $checksumlength + $endlength;
$h += $this->thickness;
return parent::getDimension($w, $h);
}
protected function validate()
{
$c = strlen($this->text);
if ($c === 0) {
throw new BCGParseException('code11', 'No data has been entered.');
}
for ($i = 0; $i < $c; $i++) {
if (array_search($this->text[$i], $this->keys) === false) {
throw new BCGParseException('code11', 'The character \'' . $this->text[$i] . '\' is not allowed.');
}
}
parent::validate();
}
protected function calculateChecksum()
{
$sequence_multiplier = array(10, 9);
$temp_text = $this->text;
$this->checksumValue = array();
for ($z = 0; $z < 2; $z++) {
$c = strlen($temp_text);
if ($c <= 10 && $z === 1) {
break;
}
$checksum = 0;
for ($i = $c, $j = 0; $i > 0; $i--, $j++) {
$multiplier = $i % $sequence_multiplier[$z];
if ($multiplier === 0) {
$multiplier = $sequence_multiplier[$z];
}
$checksum += $this->findIndex($temp_text[$j]) * $multiplier;
}
$this->checksumValue[$z] = $checksum % 11;
$temp_text .= $this->keys[$this->checksumValue[$z]];
}
}
protected function processChecksum()
{
if ($this->checksumValue === false) { $this->calculateChecksum();
}
if ($this->checksumValue !== false) {
$ret = '';
$c = count($this->checksumValue);
for ($i = 0; $i < $c; $i++) {
$ret .= $this->keys[$this->checksumValue[$i]];
}
return $ret;
}
return false;
}
private function getIndexLength($index)
{
$length = 0;
if ($index !== false) {
$length += 6;
$length += substr_count($this->code[$index], '1');
}
return $length;
}
}