/**
* Extracts a new response from a communicator.
*
* This is the function that performs the actual receiving, while the
* constructor is also involved in locks and registry sync.
*
* @param Communicator $com The communicator from which to extract
* the new response.
* @param bool $asStream Whether to populate the argument values
* with streams instead of strings.
* @param int $sTimeout If a response is not immediatly
* available, wait this many seconds. If NULL, wait indefinetly.
* Note that if an empty sentence is received, the timeout will be
* reset for another sentence receiving.
* @param int $usTimeout Microseconds to add to the waiting time.
*
* @return void
*/
private function _receive(Communicator $com, $asStream = false, $sTimeout = 0, $usTimeout = null)
{
do {
if (!$com->getTransmitter()->isDataAwaiting($sTimeout, $usTimeout)) {
throw new SocketException('No data within the time limit', SocketException::CODE_NO_DATA);
}
$type = $com->getNextWord();
} while ('' === $type);
$this->setType($type);
if ($asStream) {
for ($word = $com->getNextWordAsStream(), fseek($word, 0, SEEK_END); ftell($word) !== 0; $word = $com->getNextWordAsStream(), fseek($word, 0, SEEK_END)) {
rewind($word);
$ind = fread($word, 1);
if ('=' === $ind || '.' === $ind) {
$prefix = stream_get_line($word, null, '=');
}
if ('=' === $ind) {
$value = fopen('php://temp', 'r+b');
$bytesCopied = ftell($word);
while (!feof($word)) {
$bytesCopied += stream_copy_to_stream($word, $value, 0xfffff, $bytesCopied);
}
rewind($value);
$this->setAttribute($prefix, $value);
continue;
}
if ('.' === $ind && 'tag' === $prefix) {
$this->setTag(stream_get_contents($word, -1, -1));
continue;
}
rewind($word);
$this->unrecognizedWords[] = $word;
}
} else {
for ($word = $com->getNextWord(); '' !== $word; $word = $com->getNextWord()) {
if (preg_match('/^=([^=]+)=(.*)$/sS', $word, $matches)) {
$this->setAttribute($matches[1], $matches[2]);
} elseif (preg_match('/^\\.tag=(.*)$/sS', $word, $matches)) {
$this->setTag($matches[1]);
} else {
$this->unrecognizedWords[] = $word;
}
}
}
}
