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<?php |
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/** |
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* This file is a part of Woketo package. |
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* |
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* (c) Nekland <[email protected]> |
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* |
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* For the full license, take a look to the LICENSE file |
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* on the root directory of this project |
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*/ |
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namespace Nekland\Woketo\Rfc6455; |
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use Nekland\Tools\StringTools; |
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use Nekland\Woketo\Exception\Frame\IncompleteFrameException; |
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use Nekland\Woketo\Exception\LimitationException; |
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use Nekland\Woketo\Exception\MissingDataException; |
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use Nekland\Woketo\Utils\BitManipulation; |
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class Message |
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{ |
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/** |
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* @var array |
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*/ |
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private $frames; |
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/** |
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* @var bool |
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*/ |
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private $isComplete; |
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/** |
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* @var string |
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*/ |
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private $buffer; |
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public function __construct() |
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{ |
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$this->frames = []; |
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$this->isComplete = false; |
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$this->buffer = ''; |
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} |
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public function addData($data) |
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{ |
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$this->buffer .= $data; |
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do { |
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try { |
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$this->addFrame($frame = new Frame($this->buffer)); |
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$this->buffer = StringTools::removeStart($this->buffer, $frame->getRawData(), '8bit'); |
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} catch (IncompleteFrameException $e) { |
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return ''; // There is no more frame we can generate, the data is saved as buffer. |
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} |
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} while(!$this->isComplete() && !empty($this->buffer)); |
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if ($this->isComplete()) { |
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return $this->buffer; |
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} |
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return ''; |
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} |
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/** |
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* @param Frame $frame |
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* @return Message |
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* @throws \InvalidArgumentException |
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* @throws LimitationException |
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*/ |
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public function addFrame(Frame $frame) : Message |
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{ |
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if ($this->isComplete) { |
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throw new \InvalidArgumentException('The message is already complete.'); |
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} |
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if (count($this->frames) > 19) { |
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throw new LimitationException('We don\'t accept more than 20 frame by message. This is a security limitation.'); |
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} |
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$this->isComplete = $frame->isFinal(); |
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$this->frames[] = $frame; |
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return $this; |
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} |
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/** |
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* @return Frame |
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* @throws MissingDataException |
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*/ |
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public function getFirstFrame() : Frame |
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{ |
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if (empty($this->frames[0])) { |
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throw new MissingDataException('There is no first frame for now.'); |
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} |
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return $this->frames[0]; |
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} |
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/** |
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* This could in the future be deprecated in favor of a stream object. |
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* |
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* @return string |
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* @throws MissingDataException |
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*/ |
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public function getContent() : string |
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{ |
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if (!$this->isComplete) { |
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throw new MissingDataException('The message is not complete. Frames are missing.'); |
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} |
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$res = ''; |
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foreach ($this->frames as $frame) { |
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$res .= $frame->getPayload(); |
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} |
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return $res; |
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} |
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/** |
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* @return int |
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*/ |
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public function getOpcode() |
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{ |
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return $this->getFirstFrame()->getOpcode(); |
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} |
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/** |
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* @return bool |
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*/ |
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public function isComplete() |
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{ |
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return $this->isComplete; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isOperation() |
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{ |
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return in_array($this->getFirstFrame()->getOpcode(), [Frame::OP_TEXT, Frame::OP_BINARY]); |
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} |
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} |
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Nekland /
Woketo
