public function deferredStream(ReadableStreamInterface $stream, $progressEventName)
{
// cancelling the deferred will (try to) close the stream
$deferred = new Deferred(function () use($stream) {
$stream->close();
throw new RuntimeException('Cancelled');
});
if ($stream->isReadable()) {
// buffer all data events for deferred resolving
$buffered = array();
$stream->on($progressEventName, function ($data) use(&$buffered) {
$buffered[] = $data;
});
// error event rejects
$stream->on('error', function ($error) use($deferred) {
$deferred->reject($error);
});
// close event resolves with buffered events (unless already error'ed)
$stream->on('close', function () use($deferred, &$buffered) {
$deferred->resolve($buffered);
});
} else {
$deferred->reject(new RuntimeException('Stream already ended, looks like it could not be opened'));
}
return $deferred->promise();
}
public function close()
{
$this->closed = true;
return $this->stream->close();
}
