src/QR_Code/Encoder/RawCode.php
<?php
namespace QR_Code\Encoder;
use QR_Code\Config\Specifications;
use QR_Code\Encoder\ErrorCorrection\Rs;
use QR_Code\Encoder\ErrorCorrection\RsBlock;
/**
* Class RawCode
*
* Based on PHP QR Code distributed under LGPL 3
* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
*
* QR Code Generator for PHP is distributed under MIT
* Copyright (C) 2018 Bruno Vaula Werneck <brunovaulawerneck at gmail dot com>
*
* @package QR_Code\Encoder
*/
class RawCode
{
public $version;
public $dataCode = [];
public $eccCode = [];
public $blocks;
public $rsBlocks = []; //of rsBlocs
public $count;
public $dataLength;
public $eccLength;
public $b1;
/**
* RawCode constructor.
* @param \QR_Code\Encoder\Input $input
* @throws \Exception
*/
public function __construct (Input $input)
{
$spec = [0, 0, 0, 0, 0];
$this->dataCode = $input->getByteStream();
if (is_null($this->dataCode)) {
throw new \Exception('null imput string');
}
Specifications::getEccSpec($input->getVersion(), $input->getErrorCorrectionLevel(), $spec);
$this->version = $input->getVersion();
$this->b1 = Specifications::rsBlockNum1($spec);
$this->dataLength = Specifications::rsDataLength($spec);
$this->eccLength = Specifications::rsEccLength($spec);
$this->eccCode = array_fill(0, $this->eccLength, 0);
$this->blocks = Specifications::rsBlockNum($spec);
$ret = $this->init($spec);
if ($ret < 0) {
throw new \Exception('block alloc error');
}
$this->count = 0;
}
/**
* @param array $spec
* @return int
*/
public function init (array $spec) : int
{
$dl = Specifications::rsDataCodes1($spec);
$el = Specifications::rsEccCodes1($spec);
$rs = Rs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
$blockNo = 0;
$dataPos = 0;
$eccPos = 0;
for ($i = 0; $i < Specifications::rsBlockNum1($spec); $i++) {
$ecc = array_slice($this->eccCode, $eccPos);
$this->rsBlocks[$blockNo] = new RsBlock($dl, array_slice($this->dataCode, $dataPos), $el, $ecc, $rs);
$this->eccCode = array_merge(array_slice($this->eccCode, 0, $eccPos), $ecc);
$dataPos += $dl;
$eccPos += $el;
$blockNo++;
}
if (Specifications::rsBlockNum2($spec) == 0)
return 0;
$dl = Specifications::rsDataCodes2($spec);
$el = Specifications::rsEccCodes2($spec);
$rs = Rs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
if ($rs == null) return -1;
for ($i = 0; $i < Specifications::rsBlockNum2($spec); $i++) {
$ecc = array_slice($this->eccCode, $eccPos);
$this->rsBlocks[$blockNo] = new RsBlock($dl, array_slice($this->dataCode, $dataPos), $el, $ecc, $rs);
$this->eccCode = array_merge(array_slice($this->eccCode, 0, $eccPos), $ecc);
$dataPos += $dl;
$eccPos += $el;
$blockNo++;
}
return 0;
}
/**
* @return int|null
*/
public function getCode ()
{
$ret = null;
if ($this->count < $this->dataLength) {
$row = $this->count % $this->blocks;
$col = $this->count / $this->blocks;
if ($col >= $this->rsBlocks[0]->dataLength) {
$row += $this->b1;
}
$ret = $this->rsBlocks[$row]->data[$col];
} elseif ($this->count < $this->dataLength + $this->eccLength) {
$row = ($this->count - $this->dataLength) % $this->blocks;
$col = ($this->count - $this->dataLength) / $this->blocks;
$ret = $this->rsBlocks[$row]->ecc[$col];
} else {
return 0;
}
$this->count++;
return $ret;
}
}