/**
* split message
* @param integer $max
* @return array
*/
protected function _splitMessage($max, $header = self::HEADER_SIZE)
{
// size less or equal max
PDU::debug("Size: " . $this->getSize() . " <= " . $max);
if ($this->getSize() <= $max) {
return array($this->_data);
}
// parts of message
$data = array();
$offset = 0;
$size = $max - $header;
while (TRUE) {
$part = mb_substr($this->_data, $offset, $size, 'UTF-8');
PDU::debug("Part[" . $size . "]: " . $part);
$data[] = $part;
$offset += $size;
if ($offset >= $this->getSize()) {
break;
}
}
return $data;
}
/**
* magic method for cast to string
* @return srting|null
*/
public function __toString()
{
$PDU = sprintf("%02X", $this->getSize());
if ($this->getSize()) {
$PDU .= $this->getType();
if ($this->getType()->getType() != SCA\Type::TYPE_ALPHANUMERICAL) {
// reverse octets
$l = strlen($this->_encoded);
for ($i = 0; $i < $l; $i += 2) {
$b1 = substr($this->_encoded, $i, 1);
$b2 = $i + 1 >= $l ? 'F' : substr($this->_encoded, $i + 1, 1);
// add to pdu
$PDU .= $b2 . $b1;
}
}
}
PDU::debug("SCA::__toString() " . $PDU);
return $PDU;
}
/**
* magic method for cast part to string
* @return string
*/
public function __toString()
{
PDU::debug("_getPduString() " . $this->_getPduString());
PDU::debug("_getPartSize() " . $this->_getPartSize());
PDU::debug("getHeader() " . $this->getHeader());
PDU::debug("getData() " . $this->getData());
// concate pdu, size of part, headers, data
return $this->_getPduString() . $this->_getPartSize() . $this->getHeader() . $this->getData();
}
