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<?php |
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/** |
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* Class QRrawcode |
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* @author Tinymeng <[email protected]> |
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* @date: 2019/9/26 18:24 |
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*/ |
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namespace tinymeng\code\Gateways\qrcode; |
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use Exception; |
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class QRrawcode |
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{ |
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public $version; |
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public $datacode = array(); |
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public $ecccode = array(); |
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public $blocks; |
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public $rsblocks = array(); //of RSblock |
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public $count; |
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public $dataLength; |
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public $eccLength; |
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public $b1; |
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//---------------------------------------------------------------------- |
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public function __construct(QRinput $input) |
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{ |
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$spec = array(0,0,0,0,0); |
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$this->datacode = $input->getByteStream(); |
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if(is_null($this->datacode)) { |
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throw new Exception('null imput string'); |
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} |
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QRspec::getEccSpec($input->getVersion(), $input->getErrorCorrectionLevel(), $spec); |
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$this->version = $input->getVersion(); |
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$this->b1 = QRspec::rsBlockNum1($spec); |
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$this->dataLength = QRspec::rsDataLength($spec); |
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$this->eccLength = QRspec::rsEccLength($spec); |
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$this->ecccode = array_fill(0, $this->eccLength, 0); |
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$this->blocks = QRspec::rsBlockNum($spec); |
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$ret = $this->init($spec); |
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if($ret < 0) { |
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throw new Exception('block alloc error'); |
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return null; |
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} |
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$this->count = 0; |
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} |
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//---------------------------------------------------------------------- |
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public function init(array $spec) |
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{ |
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$dl = QRspec::rsDataCodes1($spec); |
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$el = QRspec::rsEccCodes1($spec); |
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$rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el); |
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$blockNo = 0; |
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$dataPos = 0; |
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$eccPos = 0; |
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for($i=0; $i<QRspec::rsBlockNum1($spec); $i++) { |
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$ecc = array_slice($this->ecccode,$eccPos); |
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$this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs); |
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$this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc); |
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$dataPos += $dl; |
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$eccPos += $el; |
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$blockNo++; |
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} |
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if(QRspec::rsBlockNum2($spec) == 0) |
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return 0; |
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$dl = QRspec::rsDataCodes2($spec); |
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$el = QRspec::rsEccCodes2($spec); |
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$rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el); |
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if($rs == NULL) return -1; |
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for($i=0; $i<QRspec::rsBlockNum2($spec); $i++) { |
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$ecc = array_slice($this->ecccode,$eccPos); |
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$this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs); |
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$this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc); |
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$dataPos += $dl; |
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$eccPos += $el; |
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$blockNo++; |
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} |
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return 0; |
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} |
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//---------------------------------------------------------------------- |
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public function getCode() |
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{ |
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$ret; |
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if($this->count < $this->dataLength) { |
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$row = $this->count % $this->blocks; |
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$col = $this->count / $this->blocks; |
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if($col >= $this->rsblocks[0]->dataLength) { |
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$row += $this->b1; |
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} |
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$ret = $this->rsblocks[$row]->data[$col]; |
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} else if($this->count < $this->dataLength + $this->eccLength) { |
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$row = ($this->count - $this->dataLength) % $this->blocks; |
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$col = ($this->count - $this->dataLength) / $this->blocks; |
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$ret = $this->rsblocks[$row]->ecc[$col]; |
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} else { |
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return 0; |
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} |
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$this->count++; |
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return $ret; |
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} |
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} |
majiameng /
QrCode-php
Loading history...
This check looks for function or method calls that always return null and whose return value is assigned to a variable.
The method
getObject()can return nothing but null, so it makes no sense to assign that value to a variable.The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.