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<?php
namespace React\Http\Io;
use Evenement\EventEmitter;
use Psr\Http\Message\StreamInterface;
use React\Stream\ReadableStreamInterface;
use React\Stream\Util;
use React\Stream\WritableStreamInterface;
/**
* [Internal] Bridge between StreamInterface from PSR-7 and ReadableStreamInterface from ReactPHP
*
* This class is used in the server to stream the body of an incoming response
* from the client. This allows us to stream big amounts of data without having
* to buffer this data. Similarly, this used to stream the body of an outgoing
* request body to the client. The data will be sent directly to the client.
*
* Note that this is an internal class only and nothing you should usually care
* about. See the `StreamInterface` and `ReadableStreamInterface` for more
* details.
*
* @see StreamInterface
* @see ReadableStreamInterface
* @internal
*/
class HttpBodyStream extends EventEmitter implements StreamInterface, ReadableStreamInterface
{
public $input;
private $closed = false;
private $size;
/**
* @param ReadableStreamInterface $input Stream data from $stream as a body of a PSR-7 object4
* @param int|null $size size of the data body
*/
public function __construct(ReadableStreamInterface $input, $size)
{
$this->input = $input;
$this->size = $size;
$this->input->on('data', array($this, 'handleData'));
$this->input->on('end', array($this, 'handleEnd'));
$this->input->on('error', array($this, 'handleError'));
$this->input->on('close', array($this, 'close'));
}
public function isReadable()
{
return !$this->closed && $this->input->isReadable();
}
public function pause()
{
$this->input->pause();
}
public function resume()
{
$this->input->resume();
}
public function pipe(WritableStreamInterface $dest, array $options = array())
{
Util::pipe($this, $dest, $options);
return $dest;
}
public function close()
{
if ($this->closed) {
return;
}
$this->closed = true;
$this->input->close();
$this->emit('close');
$this->removeAllListeners();
}
public function getSize()
{
return $this->size;
}
/** @ignore */
public function __toString()
{
return '';
}
/** @ignore */
public function detach()
{
return null;
}
/** @ignore */
public function tell()
{
throw new \BadMethodCallException();
}
/** @ignore */
public function eof()
{
throw new \BadMethodCallException();
}
/** @ignore */
public function isSeekable()
{
return false;
}
/** @ignore */
public function seek($offset, $whence = SEEK_SET)
{
throw new \BadMethodCallException();
}
/** @ignore */
public function rewind()
{
throw new \BadMethodCallException();
}
/** @ignore */
public function isWritable()
{
return false;
}
/** @ignore */
public function write($string)
{
throw new \BadMethodCallException();
}
/** @ignore */
public function read($length)
{
throw new \BadMethodCallException();
}
/** @ignore */
public function getContents()
{
return '';
}
/** @ignore */
public function getMetadata($key = null)
{
return null;
}
/** @internal */
public function handleData($data)
{
$this->emit('data', array($data));
}
/** @internal */
public function handleError(\Exception $e)
{
$this->emit('error', array($e));
$this->close();
}
/** @internal */
public function handleEnd()
{
if (!$this->closed) {
$this->emit('end');
$this->close();
}
}
}
|
