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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
*/
class ReadableBodyStream extends EventEmitter implements ReadableStreamInterface, StreamInterface
{
private $input;
private $position = 0;
private $size;
private $closed = false;
public function __construct(ReadableStreamInterface $input, $size = null)
{
$this->input = $input;
$this->size = $size;
$that = $this;
$pos =& $this->position;
$input->on('data', function ($data) use ($that, &$pos, $size) {
$that->emit('data', array($data));
$pos += \strlen($data);
if ($size !== null && $pos >= $size) {
$that->handleEnd();
}
});
$input->on('error', function ($error) use ($that) {
$that->emit('error', array($error));
$that->close();
});
$input->on('end', array($that, 'handleEnd'));
$input->on('close', array($that, 'close'));
}
public function close()
{
if (!$this->closed) {
$this->closed = true;
$this->input->close();
$this->emit('close');
$this->removeAllListeners();
}
}
public function isReadable()
{
return $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 $dest;
}
public function eof()
{
return !$this->isReadable();
}
public function __toString()
{
return '';
}
public function detach()
{
throw new \BadMethodCallException();
}
public function getSize()
{
return $this->size;
}
public function tell()
{
throw new \BadMethodCallException();
}
public function isSeekable()
{
return false;
}
public function seek($offset, $whence = SEEK_SET)
{
throw new \BadMethodCallException();
}
public function rewind()
{
throw new \BadMethodCallException();
}
public function isWritable()
{
return false;
}
public function write($string)
{
throw new \BadMethodCallException();
}
public function read($length)
{
throw new \BadMethodCallException();
}
public function getContents()
{
throw new \BadMethodCallException();
}
public function getMetadata($key = null)
{
return ($key === null) ? array() : null;
}
/** @internal */
public function handleEnd()
{
if ($this->position !== $this->size && $this->size !== null) {
$this->emit('error', array(new \UnderflowException('Unexpected end of response body after ' . $this->position . '/' . $this->size . ' bytes')));
} else {
$this->emit('end');
}
$this->close();
}
}
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