/**
* Singleton pattern
*
* @return QR_RSBlock
*/
public static function getInstance()
{
if (!self::$instance) {
self::$instance = new self(0, 0);
}
return self::$instance;
}
/**
* Create a bitmap out of all append data elements
*
* @param int $typeNumber
* @param int $errorCorrectLevel
* @param array $dataList
*
* @throws QR_CodeException
*
* @return array
*/
private function createData($typeNumber, $errorCorrectLevel, $dataList)
{
$rsBlocks = QR_RSBlock::getInstance()->getRSBlocks($typeNumber, $errorCorrectLevel);
$buffer = new QR_BitBuffer();
for ($i = 0; $i < sizeof($dataList); $i++) {
$data = $dataList[$i];
assert($data instanceof QR_Byte);
$buffer->put($data->getMode(), 4);
$buffer->put($data->getLength(), QR_Util::getInstance()->getLengthInBits($data->getMode(), $typeNumber));
$data->write($buffer);
}
// calc num max data
$totalDataCount = 0;
for ($i = 0; $i < sizeof($rsBlocks); $i++) {
$totalDataCount += $rsBlocks[$i]->getDataCount();
}
if ($buffer->getLengthInBits() > $totalDataCount * 8) {
throw new QR_CodeException("code length overflow (" . $buffer->getLengthInBits() . " > " . $totalDataCount * 8 . ")");
}
// end code
if ($buffer->getLengthInBits() + 4 <= $totalDataCount * 8) {
$buffer->put(0, 4);
}
// padding
while ($buffer->getLengthInBits() % 8 != 0) {
$buffer->putBit(false);
}
// padding
while (true) {
if ($buffer->getLengthInBits() >= $totalDataCount * 8) {
break;
}
$buffer->put(QR_Code::PAD0, 8);
if ($buffer->getLengthInBits() >= $totalDataCount * 8) {
break;
}
$buffer->put(QR_Code::PAD1, 8);
}
return $this->createBytes($buffer, $rsBlocks);
}
