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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 an empty StreamInterface from PSR-7 and ReadableStreamInterface from ReactPHP
*
* This class is used in the server to represent an empty body stream of an
* incoming response from the client. This is similar to the `HttpBodyStream`,
* but is specifically designed for the common case of having an empty message
* body.
*
* Note that this is an internal class only and nothing you should usually care
* about. See the `StreamInterface` and `ReadableStreamInterface` for more
* details.
*
* @see HttpBodyStream
* @see StreamInterface
* @see ReadableStreamInterface
* @internal
*/
class EmptyBodyStream extends EventEmitter implements StreamInterface, ReadableStreamInterface
{
private $closed = false;
public function isReadable()
{
return !$this->closed;
}
public function pause()
{
// NOOP
}
public function resume()
{
// NOOP
}
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->emit('close');
$this->removeAllListeners();
}
public function getSize()
{
return 0;
}
/** @ignore */
public function __toString()
{
return '';
}
/** @ignore */
public function detach()
{
return null;
}
/** @ignore */
public function tell()
{
throw new \BadMethodCallException();
}
/** @ignore */
public function eof()
{
throw new \BadMethodCallException();
}
/** @ignore */
public function isSeekable()
{
return false;
}
/** @ignore */
public function seek($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 ($key === null) ? array() : null;
}
}
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