public function encodeModeStructure()
{
try {
$bs = new QRbitstream();
$bs->appendNum(4, 0x3);
$bs->appendNum(4, ord($this->data[1]) - 1);
$bs->appendNum(4, ord($this->data[0]) - 1);
$bs->appendNum(8, ord($this->data[2]));
$this->bstream = $bs;
return 0;
} catch (Exception $e) {
return -1;
}
}
public function appendBytes($size, $data)
{
if ($size == 0) {
return 0;
}
$b = QRbitstream::newFromBytes($size, $data);
if (is_null($b)) {
return -1;
}
$ret = $this->append($b);
unset($b);
return $ret;
}
public function mergeBitStream()
{
if ($this->convertData() < 0) {
return null;
}
$bstream = new QRbitstream();
foreach ($this->items as $item) {
$ret = $bstream->append($item->bstream);
if ($ret < 0) {
return null;
}
}
return $bstream;
}