/**
* {@inheritdoc}
*/
public function write(StreamInterface $stream, DataSet $result)
{
$dataSize = 2;
$bytes = $result->getValue($this->name);
for ($i = 0; $i < $dataSize; $i++) {
$unsignedByte = $bytes >> ($dataSize - (1 + $i)) * 8 & 0xff;
$stream->write(pack('C', intval($unsignedByte) & 0xff));
}
}
/**
* Get the value of the property for the given DataSet.
*
* @param DataSet $result
* @return mixed
*/
public function get(DataSet $result)
{
// If the path begins '/', it is absolute
$absolute = isset($this->path[0]) && $this->path[0] === '/';
$pathParts = explode('/', $this->path);
if ($absolute) {
array_shift($pathParts);
}
return $result->getValueByPath($pathParts, $absolute);
}
/**
* {@inheritdoc}
*/
public function read(StreamInterface $stream, DataSet $result)
{
$data = $stream->read(4);
if (strlen($data) < 2) {
$data = str_pad($data, 2, "", STR_PAD_LEFT);
}
$unpacked = unpack('l', $data);
$this->validate($unpacked[1]);
$result->setValue($this->getName(), $unpacked[1]);
}
/**
* {@inheritdoc}
*/
public function write(StreamInterface $stream, DataSet $result)
{
$result->push($this->getName());
$count = isset($this->count) ? $this->count->get($result) : 1;
// Read this compound field $count times
for ($iteration = 0; $iteration < $count; $iteration++) {
$result->push($iteration);
foreach ($this->fields as $field) {
$field->write($stream, $result);
}
$result->pop();
}
$result->pop();
}
/**
* {@inheritdoc}
*/
public function read(StreamInterface $stream, DataSet $result)
{
$result->push($this->name);
// Read the bytes into memory
$byte = $stream->readByte();
$bitPosition = 0;
// Get the structure
$structure = $this->structure->get();
foreach ($structure as $bitFieldName => $bitFieldSize) {
$value = ord($byte) >> $bitPosition & bindec(str_repeat('1', $bitFieldSize));
$result->setValue($bitFieldName, $value);
$bitPosition += $bitFieldSize;
}
$result->pop();
}
/**
* {@inheritdoc}
*/
public function write(StreamInterface $stream, DataSet $result)
{
//Writing floats currently untested
$bytes = $result->getValue($this->name);
$stream->write(pack('f', intval($bytes)));
}
/**
* {@inheritdoc}
*/
public function write(StreamInterface $stream, DataSet $result)
{
$bytes = substr($result->getValue($this->getName()), 0, $this->size->get($result));
$stream->write($bytes);
}
/**
* Write the value for this field, then the delimiter at the end.
*
* {@inheritdoc}
*/
public function write(StreamInterface $stream, DataSet $result)
{
$stream->write($result->getValue($this->getName()));
$stream->write($this->delimiter->get($result));
}
