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<?php
/**
* QRrawcode.php
*
* Created by arielferrandini
*/
namespace PHPQRCode;
use Exception;
class QRrawcode {
public $version;
public $datacode = array();
public $ecccode = array();
public $blocks;
public $rsblocks = array(); //of RSblock
public $count;
public $dataLength;
public $eccLength;
public $b1;
//----------------------------------------------------------------------
public function __construct(QRinput $input)
{
$spec = array(0,0,0,0,0);
$this->datacode = $input->getByteStream();
if(is_null($this->datacode)) {
throw new Exception('null input string');
}
QRspec::getEccSpec($input->getVersion(), $input->getErrorCorrectionLevel(), $spec);
$this->version = $input->getVersion();
$this->b1 = QRspec::rsBlockNum1($spec);
$this->dataLength = QRspec::rsDataLength($spec);
$this->eccLength = QRspec::rsEccLength($spec);
$this->ecccode = array_fill(0, $this->eccLength, 0);
$this->blocks = QRspec::rsBlockNum($spec);
$ret = $this->init($spec);
if($ret < 0) {
throw new Exception('block alloc error');
return null;
}
$this->count = 0;
}
//----------------------------------------------------------------------
public function init(array $spec)
{
$dl = QRspec::rsDataCodes1($spec);
$el = QRspec::rsEccCodes1($spec);
$rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
$blockNo = 0;
$dataPos = 0;
$eccPos = 0;
for($i=0; $i<QRspec::rsBlockNum1($spec); $i++) {
$ecc = array_slice($this->ecccode,$eccPos);
$this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);
$this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
$dataPos += $dl;
$eccPos += $el;
$blockNo++;
}
if(QRspec::rsBlockNum2($spec) == 0)
return 0;
$dl = QRspec::rsDataCodes2($spec);
$el = QRspec::rsEccCodes2($spec);
$rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
if($rs == NULL) return -1;
for($i=0; $i<QRspec::rsBlockNum2($spec); $i++) {
$ecc = array_slice($this->ecccode,$eccPos);
$this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);
$this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
$dataPos += $dl;
$eccPos += $el;
$blockNo++;
}
return 0;
}
//----------------------------------------------------------------------
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[$col];
} else if($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;
}
}
|
