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<?php |
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/** |
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* Nucleus - XMPP Library for PHP |
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* |
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* Copyright (C) 2016, Some rights reserved. |
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* |
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* @author Kacper "Kadet" Donat <[email protected]> |
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* |
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* Contact with author: |
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* Xmpp: [email protected] |
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* E-mail: [email protected] |
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* |
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* From Kadet with love. |
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*/ |
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namespace Kadet\Xmpp\Xml; |
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use Kadet\Xmpp\Exception\Protocol\StreamErrorException; |
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use Kadet\Xmpp\Exception\ReadOnlyException; |
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use Kadet\Xmpp\Stream\Error; |
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use Kadet\Xmpp\Stream\Stream; |
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use Kadet\Xmpp\Utils\BetterEmitter; |
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use Kadet\Xmpp\Utils\Logging; |
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use Kadet\Xmpp\Utils\StreamDecorator; |
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use React\Stream\DuplexStreamInterface; |
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use Kadet\Xmpp\Utils\filter as with; |
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/** |
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* Class XmlStream |
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* |
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* @package Kadet\Xmpp\Xml |
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* |
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* @event element(XmlElement $element) |
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* @event stream.error( |
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* @event stream.open |
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* @event stream.close |
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* @event send.element |
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* @event send.text |
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* |
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* @property-read string $id |
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* @property-read string $from |
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* @property-read string $to |
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* @property-read string $version |
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* @property-read string $lang |
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*/ |
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class XmlStream extends StreamDecorator // implements BetterEmitterInterface // Some php cancer |
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{ |
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use BetterEmitter, Logging; |
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/** XML namespace of stream */ |
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const NAMESPACE_URI = 'http://etherx.jabber.org/streams'; |
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/** |
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* XmlParser reference |
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* |
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* @var XmlParser |
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*/ |
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protected $_parser; |
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/** |
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* @var bool |
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* |
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* @see XmlStream::isOpened |
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*/ |
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private $_isOpened = false; |
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/** |
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* Inbound Stream root element |
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* |
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* @var XmlElement |
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*/ |
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private $_inbound; |
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/** |
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* Outbound Stream root element |
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* |
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* @var XmlElement |
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*/ |
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private $_outbound; |
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/** |
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* XmlStream constructor. |
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* |
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* Xml Stream acts like stream wrapper, that uses $transport stream to communicate with server. |
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* |
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* @param XmlParser $parser XmlParser instance used for converting XML to objects |
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* @param DuplexStreamInterface $transport Stream used as the transport |
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*/ |
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public function __construct(XmlParser $parser, DuplexStreamInterface $transport = null) |
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{ |
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parent::__construct($transport); |
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$this->setParser($parser); |
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$this->on('close', function () { $this->_isOpened = false; }); |
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} |
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public function setParser(XmlParser $parser) |
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{ |
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$this->_parser = $parser; |
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$this->on('element', function (Error $element) { |
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$this->handleError($element); |
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}, with\instance(Error::class)); |
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$this->_parser->on('parse.begin', function (XmlElement $stream) { |
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$this->_inbound = $stream; |
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$this->emit('stream.open', [ $stream ]); |
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}, with\argument(1, with\equals(0))); |
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$this->_parser->on('parse.end', function (XmlElement $stream) { |
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$this->emit('stream.close', [ $stream ]); |
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$this->_inbound = null; |
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}, with\argument(1, with\equals(0))); |
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$this->_parser->on('element', function (...$arguments) { |
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$this->emit('element', $arguments); |
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}); |
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$this->on('data', [$this->_parser, 'parse']); |
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} |
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/** |
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* Writes data to stream |
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* |
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* @param string $data Data to write |
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* @return bool |
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*/ |
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public function write($data) |
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{ |
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if($data instanceof XmlElement) { |
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$this->_outbound->append($data); |
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} |
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$this->emit('send.'.($data instanceof XmlElement ? 'element' : 'text'), [ $data ]); |
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return parent::write($data); |
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} |
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/** |
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* Starts new stream with specified attributes |
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* |
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* @param array $attributes Stream attributes |
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*/ |
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public function start(array $attributes = []) |
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{ |
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$this->_parser->reset(); |
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$this->write('<?xml version="1.0" encoding="utf-8"?>'); |
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$this->_outbound = new Stream(['attributes' => $attributes, 'xmlns' => 'jabber:client']); |
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$this->write(preg_replace('~\s+/>$~', '>', $this->_outbound)); |
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$this->_isOpened = true; |
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} |
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/** |
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* Gently closes stream |
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*/ |
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public function close() |
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{ |
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if ($this->isOpened()) { |
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$this->write('</stream:stream>'); |
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$this->_isOpened = false; |
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} |
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parent::close(); |
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} |
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/** |
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* Checks if stream is opened |
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* |
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* @return bool |
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*/ |
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public function isOpened() |
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{ |
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return $this->_isOpened; |
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} |
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public function __get($name) |
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{ |
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return $this->_inbound->getAttribute($name === 'lang' ? 'xml:lang' : $name); |
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} |
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public function __set($name, $value) |
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{ |
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throw new ReadOnlyException('Stream attributes are read-only.'); |
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} |
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public function __isset($name) |
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{ |
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return $this->_inbound->hasAttribute($name); |
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} |
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private function handleError(Error $element) |
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{ |
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if ($this->emit('stream.error', [ $element ])) { |
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throw new StreamErrorException($element); |
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} |
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return false; |
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} |
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} |
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kadet1090 /
nucleus
