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- (function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.io = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
- /**
- * Module dependencies.
- */
- var url = _dereq_('./url');
- var parser = _dereq_('socket.io-parser');
- var Manager = _dereq_('./manager');
- var debug = _dereq_('debug')('socket.io-client');
- /**
- * Module exports.
- */
- module.exports = exports = lookup;
- /**
- * Managers cache.
- */
- var cache = exports.managers = {};
- /**
- * Looks up an existing `Manager` for multiplexing.
- * If the user summons:
- *
- * `io('http://localhost/a');`
- * `io('http://localhost/b');`
- *
- * We reuse the existing instance based on same scheme/port/host,
- * and we initialize sockets for each namespace.
- *
- * @api public
- */
- function lookup(uri, opts) {
- if (typeof uri == 'object') {
- opts = uri;
- uri = undefined;
- }
- opts = opts || {};
- var parsed = url(uri);
- var source = parsed.source;
- var id = parsed.id;
- var path = parsed.path;
- var sameNamespace = cache[id] && path in cache[id].nsps;
- var newConnection = opts.forceNew || opts['force new connection'] ||
- false === opts.multiplex || sameNamespace;
- var io;
- if (newConnection) {
- debug('ignoring socket cache for %s', source);
- io = Manager(source, opts);
- } else {
- if (!cache[id]) {
- debug('new io instance for %s', source);
- cache[id] = Manager(source, opts);
- }
- io = cache[id];
- }
- return io.socket(parsed.path);
- }
- /**
- * Protocol version.
- *
- * @api public
- */
- exports.protocol = parser.protocol;
- /**
- * `connect`.
- *
- * @param {String} uri
- * @api public
- */
- exports.connect = lookup;
- /**
- * Expose constructors for standalone build.
- *
- * @api public
- */
- exports.Manager = _dereq_('./manager');
- exports.Socket = _dereq_('./socket');
- },{"./manager":2,"./socket":4,"./url":5,"debug":14,"socket.io-parser":40}],2:[function(_dereq_,module,exports){
- /**
- * Module dependencies.
- */
- var eio = _dereq_('engine.io-client');
- var Socket = _dereq_('./socket');
- var Emitter = _dereq_('component-emitter');
- var parser = _dereq_('socket.io-parser');
- var on = _dereq_('./on');
- var bind = _dereq_('component-bind');
- var debug = _dereq_('debug')('socket.io-client:manager');
- var indexOf = _dereq_('indexof');
- var Backoff = _dereq_('backo2');
- /**
- * IE6+ hasOwnProperty
- */
- var has = Object.prototype.hasOwnProperty;
- /**
- * Module exports
- */
- module.exports = Manager;
- /**
- * `Manager` constructor.
- *
- * @param {String} engine instance or engine uri/opts
- * @param {Object} options
- * @api public
- */
- function Manager(uri, opts){
- if (!(this instanceof Manager)) return new Manager(uri, opts);
- if (uri && ('object' == typeof uri)) {
- opts = uri;
- uri = undefined;
- }
- opts = opts || {};
- opts.path = opts.path || '/socket.io';
- this.nsps = {};
- this.subs = [];
- this.opts = opts;
- this.reconnection(opts.reconnection !== false);
- this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
- this.reconnectionDelay(opts.reconnectionDelay || 1000);
- this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
- this.randomizationFactor(opts.randomizationFactor || 0.5);
- this.backoff = new Backoff({
- min: this.reconnectionDelay(),
- max: this.reconnectionDelayMax(),
- jitter: this.randomizationFactor()
- });
- this.timeout(null == opts.timeout ? 20000 : opts.timeout);
- this.readyState = 'closed';
- this.uri = uri;
- this.connecting = [];
- this.lastPing = null;
- this.encoding = false;
- this.packetBuffer = [];
- this.encoder = new parser.Encoder();
- this.decoder = new parser.Decoder();
- this.autoConnect = opts.autoConnect !== false;
- if (this.autoConnect) this.open();
- }
- /**
- * Propagate given event to sockets and emit on `this`
- *
- * @api private
- */
- Manager.prototype.emitAll = function() {
- this.emit.apply(this, arguments);
- for (var nsp in this.nsps) {
- if (has.call(this.nsps, nsp)) {
- this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
- }
- }
- };
- /**
- * Update `socket.id` of all sockets
- *
- * @api private
- */
- Manager.prototype.updateSocketIds = function(){
- for (var nsp in this.nsps) {
- if (has.call(this.nsps, nsp)) {
- this.nsps[nsp].id = this.engine.id;
- }
- }
- };
- /**
- * Mix in `Emitter`.
- */
- Emitter(Manager.prototype);
- /**
- * Sets the `reconnection` config.
- *
- * @param {Boolean} true/false if it should automatically reconnect
- * @return {Manager} self or value
- * @api public
- */
- Manager.prototype.reconnection = function(v){
- if (!arguments.length) return this._reconnection;
- this._reconnection = !!v;
- return this;
- };
- /**
- * Sets the reconnection attempts config.
- *
- * @param {Number} max reconnection attempts before giving up
- * @return {Manager} self or value
- * @api public
- */
- Manager.prototype.reconnectionAttempts = function(v){
- if (!arguments.length) return this._reconnectionAttempts;
- this._reconnectionAttempts = v;
- return this;
- };
- /**
- * Sets the delay between reconnections.
- *
- * @param {Number} delay
- * @return {Manager} self or value
- * @api public
- */
- Manager.prototype.reconnectionDelay = function(v){
- if (!arguments.length) return this._reconnectionDelay;
- this._reconnectionDelay = v;
- this.backoff && this.backoff.setMin(v);
- return this;
- };
- Manager.prototype.randomizationFactor = function(v){
- if (!arguments.length) return this._randomizationFactor;
- this._randomizationFactor = v;
- this.backoff && this.backoff.setJitter(v);
- return this;
- };
- /**
- * Sets the maximum delay between reconnections.
- *
- * @param {Number} delay
- * @return {Manager} self or value
- * @api public
- */
- Manager.prototype.reconnectionDelayMax = function(v){
- if (!arguments.length) return this._reconnectionDelayMax;
- this._reconnectionDelayMax = v;
- this.backoff && this.backoff.setMax(v);
- return this;
- };
- /**
- * Sets the connection timeout. `false` to disable
- *
- * @return {Manager} self or value
- * @api public
- */
- Manager.prototype.timeout = function(v){
- if (!arguments.length) return this._timeout;
- this._timeout = v;
- return this;
- };
- /**
- * Starts trying to reconnect if reconnection is enabled and we have not
- * started reconnecting yet
- *
- * @api private
- */
- Manager.prototype.maybeReconnectOnOpen = function() {
- // Only try to reconnect if it's the first time we're connecting
- if (!this.reconnecting && this._reconnection && this.backoff.attempts === 0) {
- // keeps reconnection from firing twice for the same reconnection loop
- this.reconnect();
- }
- };
- /**
- * Sets the current transport `socket`.
- *
- * @param {Function} optional, callback
- * @return {Manager} self
- * @api public
- */
- Manager.prototype.open =
- Manager.prototype.connect = function(fn){
- debug('readyState %s', this.readyState);
- if (~this.readyState.indexOf('open')) return this;
- debug('opening %s', this.uri);
- this.engine = eio(this.uri, this.opts);
- var socket = this.engine;
- var self = this;
- this.readyState = 'opening';
- this.skipReconnect = false;
- // emit `open`
- var openSub = on(socket, 'open', function() {
- self.onopen();
- fn && fn();
- });
- // emit `connect_error`
- var errorSub = on(socket, 'error', function(data){
- debug('connect_error');
- self.cleanup();
- self.readyState = 'closed';
- self.emitAll('connect_error', data);
- if (fn) {
- var err = new Error('Connection error');
- err.data = data;
- fn(err);
- } else {
- // Only do this if there is no fn to handle the error
- self.maybeReconnectOnOpen();
- }
- });
- // emit `connect_timeout`
- if (false !== this._timeout) {
- var timeout = this._timeout;
- debug('connect attempt will timeout after %d', timeout);
- // set timer
- var timer = setTimeout(function(){
- debug('connect attempt timed out after %d', timeout);
- openSub.destroy();
- socket.close();
- socket.emit('error', 'timeout');
- self.emitAll('connect_timeout', timeout);
- }, timeout);
- this.subs.push({
- destroy: function(){
- clearTimeout(timer);
- }
- });
- }
- this.subs.push(openSub);
- this.subs.push(errorSub);
- return this;
- };
- /**
- * Called upon transport open.
- *
- * @api private
- */
- Manager.prototype.onopen = function(){
- debug('open');
- // clear old subs
- this.cleanup();
- // mark as open
- this.readyState = 'open';
- this.emit('open');
- // add new subs
- var socket = this.engine;
- this.subs.push(on(socket, 'data', bind(this, 'ondata')));
- this.subs.push(on(socket, 'ping', bind(this, 'onping')));
- this.subs.push(on(socket, 'pong', bind(this, 'onpong')));
- this.subs.push(on(socket, 'error', bind(this, 'onerror')));
- this.subs.push(on(socket, 'close', bind(this, 'onclose')));
- this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));
- };
- /**
- * Called upon a ping.
- *
- * @api private
- */
- Manager.prototype.onping = function(){
- this.lastPing = new Date;
- this.emitAll('ping');
- };
- /**
- * Called upon a packet.
- *
- * @api private
- */
- Manager.prototype.onpong = function(){
- this.emitAll('pong', new Date - this.lastPing);
- };
- /**
- * Called with data.
- *
- * @api private
- */
- Manager.prototype.ondata = function(data){
- this.decoder.add(data);
- };
- /**
- * Called when parser fully decodes a packet.
- *
- * @api private
- */
- Manager.prototype.ondecoded = function(packet) {
- this.emit('packet', packet);
- };
- /**
- * Called upon socket error.
- *
- * @api private
- */
- Manager.prototype.onerror = function(err){
- debug('error', err);
- this.emitAll('error', err);
- };
- /**
- * Creates a new socket for the given `nsp`.
- *
- * @return {Socket}
- * @api public
- */
- Manager.prototype.socket = function(nsp){
- var socket = this.nsps[nsp];
- if (!socket) {
- socket = new Socket(this, nsp);
- this.nsps[nsp] = socket;
- var self = this;
- socket.on('connecting', onConnecting);
- socket.on('connect', function(){
- socket.id = self.engine.id;
- });
- if (this.autoConnect) {
- // manually call here since connecting evnet is fired before listening
- onConnecting();
- }
- }
- function onConnecting() {
- if (!~indexOf(self.connecting, socket)) {
- self.connecting.push(socket);
- }
- }
- return socket;
- };
- /**
- * Called upon a socket close.
- *
- * @param {Socket} socket
- */
- Manager.prototype.destroy = function(socket){
- var index = indexOf(this.connecting, socket);
- if (~index) this.connecting.splice(index, 1);
- if (this.connecting.length) return;
- this.close();
- };
- /**
- * Writes a packet.
- *
- * @param {Object} packet
- * @api private
- */
- Manager.prototype.packet = function(packet){
- debug('writing packet %j', packet);
- var self = this;
- if (!self.encoding) {
- // encode, then write to engine with result
- self.encoding = true;
- this.encoder.encode(packet, function(encodedPackets) {
- for (var i = 0; i < encodedPackets.length; i++) {
- self.engine.write(encodedPackets[i], packet.options);
- }
- self.encoding = false;
- self.processPacketQueue();
- });
- } else { // add packet to the queue
- self.packetBuffer.push(packet);
- }
- };
- /**
- * If packet buffer is non-empty, begins encoding the
- * next packet in line.
- *
- * @api private
- */
- Manager.prototype.processPacketQueue = function() {
- if (this.packetBuffer.length > 0 && !this.encoding) {
- var pack = this.packetBuffer.shift();
- this.packet(pack);
- }
- };
- /**
- * Clean up transport subscriptions and packet buffer.
- *
- * @api private
- */
- Manager.prototype.cleanup = function(){
- debug('cleanup');
- var sub;
- while (sub = this.subs.shift()) sub.destroy();
- this.packetBuffer = [];
- this.encoding = false;
- this.lastPing = null;
- this.decoder.destroy();
- };
- /**
- * Close the current socket.
- *
- * @api private
- */
- Manager.prototype.close =
- Manager.prototype.disconnect = function(){
- debug('disconnect');
- this.skipReconnect = true;
- this.reconnecting = false;
- if ('opening' == this.readyState) {
- // `onclose` will not fire because
- // an open event never happened
- this.cleanup();
- }
- this.backoff.reset();
- this.readyState = 'closed';
- if (this.engine) this.engine.close();
- };
- /**
- * Called upon engine close.
- *
- * @api private
- */
- Manager.prototype.onclose = function(reason){
- debug('onclose');
- this.cleanup();
- this.backoff.reset();
- this.readyState = 'closed';
- this.emit('close', reason);
- if (this._reconnection && !this.skipReconnect) {
- this.reconnect();
- }
- };
- /**
- * Attempt a reconnection.
- *
- * @api private
- */
- Manager.prototype.reconnect = function(){
- if (this.reconnecting || this.skipReconnect) return this;
- var self = this;
- if (this.backoff.attempts >= this._reconnectionAttempts) {
- debug('reconnect failed');
- this.backoff.reset();
- this.emitAll('reconnect_failed');
- this.reconnecting = false;
- } else {
- var delay = this.backoff.duration();
- debug('will wait %dms before reconnect attempt', delay);
- this.reconnecting = true;
- var timer = setTimeout(function(){
- if (self.skipReconnect) return;
- debug('attempting reconnect');
- self.emitAll('reconnect_attempt', self.backoff.attempts);
- self.emitAll('reconnecting', self.backoff.attempts);
- // check again for the case socket closed in above events
- if (self.skipReconnect) return;
- self.open(function(err){
- if (err) {
- debug('reconnect attempt error');
- self.reconnecting = false;
- self.reconnect();
- self.emitAll('reconnect_error', err.data);
- } else {
- debug('reconnect success');
- self.onreconnect();
- }
- });
- }, delay);
- this.subs.push({
- destroy: function(){
- clearTimeout(timer);
- }
- });
- }
- };
- /**
- * Called upon successful reconnect.
- *
- * @api private
- */
- Manager.prototype.onreconnect = function(){
- var attempt = this.backoff.attempts;
- this.reconnecting = false;
- this.backoff.reset();
- this.updateSocketIds();
- this.emitAll('reconnect', attempt);
- };
- },{"./on":3,"./socket":4,"backo2":8,"component-bind":11,"component-emitter":12,"debug":14,"engine.io-client":16,"indexof":32,"socket.io-parser":40}],3:[function(_dereq_,module,exports){
- /**
- * Module exports.
- */
- module.exports = on;
- /**
- * Helper for subscriptions.
- *
- * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`
- * @param {String} event name
- * @param {Function} callback
- * @api public
- */
- function on(obj, ev, fn) {
- obj.on(ev, fn);
- return {
- destroy: function(){
- obj.removeListener(ev, fn);
- }
- };
- }
- },{}],4:[function(_dereq_,module,exports){
- /**
- * Module dependencies.
- */
- var parser = _dereq_('socket.io-parser');
- var Emitter = _dereq_('component-emitter');
- var toArray = _dereq_('to-array');
- var on = _dereq_('./on');
- var bind = _dereq_('component-bind');
- var debug = _dereq_('debug')('socket.io-client:socket');
- var hasBin = _dereq_('has-binary');
- /**
- * Module exports.
- */
- module.exports = exports = Socket;
- /**
- * Internal events (blacklisted).
- * These events can't be emitted by the user.
- *
- * @api private
- */
- var events = {
- connect: 1,
- connect_error: 1,
- connect_timeout: 1,
- connecting: 1,
- disconnect: 1,
- error: 1,
- reconnect: 1,
- reconnect_attempt: 1,
- reconnect_failed: 1,
- reconnect_error: 1,
- reconnecting: 1,
- ping: 1,
- pong: 1
- };
- /**
- * Shortcut to `Emitter#emit`.
- */
- var emit = Emitter.prototype.emit;
- /**
- * `Socket` constructor.
- *
- * @api public
- */
- function Socket(io, nsp){
- this.io = io;
- this.nsp = nsp;
- this.json = this; // compat
- this.ids = 0;
- this.acks = {};
- this.receiveBuffer = [];
- this.sendBuffer = [];
- this.connected = false;
- this.disconnected = true;
- if (this.io.autoConnect) this.open();
- }
- /**
- * Mix in `Emitter`.
- */
- Emitter(Socket.prototype);
- /**
- * Subscribe to open, close and packet events
- *
- * @api private
- */
- Socket.prototype.subEvents = function() {
- if (this.subs) return;
- var io = this.io;
- this.subs = [
- on(io, 'open', bind(this, 'onopen')),
- on(io, 'packet', bind(this, 'onpacket')),
- on(io, 'close', bind(this, 'onclose'))
- ];
- };
- /**
- * "Opens" the socket.
- *
- * @api public
- */
- Socket.prototype.open =
- Socket.prototype.connect = function(){
- if (this.connected) return this;
- this.subEvents();
- this.io.open(); // ensure open
- if ('open' == this.io.readyState) this.onopen();
- this.emit('connecting');
- return this;
- };
- /**
- * Sends a `message` event.
- *
- * @return {Socket} self
- * @api public
- */
- Socket.prototype.send = function(){
- var args = toArray(arguments);
- args.unshift('message');
- this.emit.apply(this, args);
- return this;
- };
- /**
- * Override `emit`.
- * If the event is in `events`, it's emitted normally.
- *
- * @param {String} event name
- * @return {Socket} self
- * @api public
- */
- Socket.prototype.emit = function(ev){
- if (events.hasOwnProperty(ev)) {
- emit.apply(this, arguments);
- return this;
- }
- var args = toArray(arguments);
- var parserType = parser.EVENT; // default
- if (hasBin(args)) { parserType = parser.BINARY_EVENT; } // binary
- var packet = { type: parserType, data: args };
- packet.options = {};
- packet.options.compress = !this.flags || false !== this.flags.compress;
- // event ack callback
- if ('function' == typeof args[args.length - 1]) {
- debug('emitting packet with ack id %d', this.ids);
- this.acks[this.ids] = args.pop();
- packet.id = this.ids++;
- }
- if (this.connected) {
- this.packet(packet);
- } else {
- this.sendBuffer.push(packet);
- }
- delete this.flags;
- return this;
- };
- /**
- * Sends a packet.
- *
- * @param {Object} packet
- * @api private
- */
- Socket.prototype.packet = function(packet){
- packet.nsp = this.nsp;
- this.io.packet(packet);
- };
- /**
- * Called upon engine `open`.
- *
- * @api private
- */
- Socket.prototype.onopen = function(){
- debug('transport is open - connecting');
- // write connect packet if necessary
- if ('/' != this.nsp) {
- this.packet({ type: parser.CONNECT });
- }
- };
- /**
- * Called upon engine `close`.
- *
- * @param {String} reason
- * @api private
- */
- Socket.prototype.onclose = function(reason){
- debug('close (%s)', reason);
- this.connected = false;
- this.disconnected = true;
- delete this.id;
- this.emit('disconnect', reason);
- };
- /**
- * Called with socket packet.
- *
- * @param {Object} packet
- * @api private
- */
- Socket.prototype.onpacket = function(packet){
- if (packet.nsp != this.nsp) return;
- switch (packet.type) {
- case parser.CONNECT:
- this.onconnect();
- break;
- case parser.EVENT:
- this.onevent(packet);
- break;
- case parser.BINARY_EVENT:
- this.onevent(packet);
- break;
- case parser.ACK:
- this.onack(packet);
- break;
- case parser.BINARY_ACK:
- this.onack(packet);
- break;
- case parser.DISCONNECT:
- this.ondisconnect();
- break;
- case parser.ERROR:
- this.emit('error', packet.data);
- break;
- }
- };
- /**
- * Called upon a server event.
- *
- * @param {Object} packet
- * @api private
- */
- Socket.prototype.onevent = function(packet){
- var args = packet.data || [];
- debug('emitting event %j', args);
- if (null != packet.id) {
- debug('attaching ack callback to event');
- args.push(this.ack(packet.id));
- }
- if (this.connected) {
- emit.apply(this, args);
- } else {
- this.receiveBuffer.push(args);
- }
- };
- /**
- * Produces an ack callback to emit with an event.
- *
- * @api private
- */
- Socket.prototype.ack = function(id){
- var self = this;
- var sent = false;
- return function(){
- // prevent double callbacks
- if (sent) return;
- sent = true;
- var args = toArray(arguments);
- debug('sending ack %j', args);
- var type = hasBin(args) ? parser.BINARY_ACK : parser.ACK;
- self.packet({
- type: type,
- id: id,
- data: args
- });
- };
- };
- /**
- * Called upon a server acknowlegement.
- *
- * @param {Object} packet
- * @api private
- */
- Socket.prototype.onack = function(packet){
- var ack = this.acks[packet.id];
- if ('function' == typeof ack) {
- debug('calling ack %s with %j', packet.id, packet.data);
- ack.apply(this, packet.data);
- delete this.acks[packet.id];
- } else {
- debug('bad ack %s', packet.id);
- }
- };
- /**
- * Called upon server connect.
- *
- * @api private
- */
- Socket.prototype.onconnect = function(){
- this.connected = true;
- this.disconnected = false;
- this.emit('connect');
- this.emitBuffered();
- };
- /**
- * Emit buffered events (received and emitted).
- *
- * @api private
- */
- Socket.prototype.emitBuffered = function(){
- var i;
- for (i = 0; i < this.receiveBuffer.length; i++) {
- emit.apply(this, this.receiveBuffer[i]);
- }
- this.receiveBuffer = [];
- for (i = 0; i < this.sendBuffer.length; i++) {
- this.packet(this.sendBuffer[i]);
- }
- this.sendBuffer = [];
- };
- /**
- * Called upon server disconnect.
- *
- * @api private
- */
- Socket.prototype.ondisconnect = function(){
- debug('server disconnect (%s)', this.nsp);
- this.destroy();
- this.onclose('io server disconnect');
- };
- /**
- * Called upon forced client/server side disconnections,
- * this method ensures the manager stops tracking us and
- * that reconnections don't get triggered for this.
- *
- * @api private.
- */
- Socket.prototype.destroy = function(){
- if (this.subs) {
- // clean subscriptions to avoid reconnections
- for (var i = 0; i < this.subs.length; i++) {
- this.subs[i].destroy();
- }
- this.subs = null;
- }
- this.io.destroy(this);
- };
- /**
- * Disconnects the socket manually.
- *
- * @return {Socket} self
- * @api public
- */
- Socket.prototype.close =
- Socket.prototype.disconnect = function(){
- if (this.connected) {
- debug('performing disconnect (%s)', this.nsp);
- this.packet({ type: parser.DISCONNECT });
- }
- // remove socket from pool
- this.destroy();
- if (this.connected) {
- // fire events
- this.onclose('io client disconnect');
- }
- return this;
- };
- /**
- * Sets the compress flag.
- *
- * @param {Boolean} if `true`, compresses the sending data
- * @return {Socket} self
- * @api public
- */
- Socket.prototype.compress = function(compress){
- this.flags = this.flags || {};
- this.flags.compress = compress;
- return this;
- };
- },{"./on":3,"component-bind":11,"component-emitter":12,"debug":14,"has-binary":30,"socket.io-parser":40,"to-array":43}],5:[function(_dereq_,module,exports){
- (function (global){
- /**
- * Module dependencies.
- */
- var parseuri = _dereq_('parseuri');
- var debug = _dereq_('debug')('socket.io-client:url');
- /**
- * Module exports.
- */
- module.exports = url;
- /**
- * URL parser.
- *
- * @param {String} url
- * @param {Object} An object meant to mimic window.location.
- * Defaults to window.location.
- * @api public
- */
- function url(uri, loc){
- var obj = uri;
- // default to window.location
- var loc = loc || global.location;
- if (null == uri) uri = loc.protocol + '//' + loc.host;
- // relative path support
- if ('string' == typeof uri) {
- if ('/' == uri.charAt(0)) {
- if ('/' == uri.charAt(1)) {
- uri = loc.protocol + uri;
- } else {
- uri = loc.host + uri;
- }
- }
- if (!/^(https?|wss?):\/\//.test(uri)) {
- debug('protocol-less url %s', uri);
- if ('undefined' != typeof loc) {
- uri = loc.protocol + '//' + uri;
- } else {
- uri = 'https://' + uri;
- }
- }
- // parse
- debug('parse %s', uri);
- obj = parseuri(uri);
- }
- // make sure we treat `localhost:80` and `localhost` equally
- if (!obj.port) {
- if (/^(http|ws)$/.test(obj.protocol)) {
- obj.port = '80';
- }
- else if (/^(http|ws)s$/.test(obj.protocol)) {
- obj.port = '443';
- }
- }
- obj.path = obj.path || '/';
- var ipv6 = obj.host.indexOf(':') !== -1;
- var host = ipv6 ? '[' + obj.host + ']' : obj.host;
- // define unique id
- obj.id = obj.protocol + '://' + host + ':' + obj.port;
- // define href
- obj.href = obj.protocol + '://' + host + (loc && loc.port == obj.port ? '' : (':' + obj.port));
- return obj;
- }
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"debug":14,"parseuri":38}],6:[function(_dereq_,module,exports){
- module.exports = after
- function after(count, callback, err_cb) {
- var bail = false
- err_cb = err_cb || noop
- proxy.count = count
- return (count === 0) ? callback() : proxy
- function proxy(err, result) {
- if (proxy.count <= 0) {
- throw new Error('after called too many times')
- }
- --proxy.count
- // after first error, rest are passed to err_cb
- if (err) {
- bail = true
- callback(err)
- // future error callbacks will go to error handler
- callback = err_cb
- } else if (proxy.count === 0 && !bail) {
- callback(null, result)
- }
- }
- }
- function noop() {}
- },{}],7:[function(_dereq_,module,exports){
- /**
- * An abstraction for slicing an arraybuffer even when
- * ArrayBuffer.prototype.slice is not supported
- *
- * @api public
- */
- module.exports = function(arraybuffer, start, end) {
- var bytes = arraybuffer.byteLength;
- start = start || 0;
- end = end || bytes;
- if (arraybuffer.slice) { return arraybuffer.slice(start, end); }
- if (start < 0) { start += bytes; }
- if (end < 0) { end += bytes; }
- if (end > bytes) { end = bytes; }
- if (start >= bytes || start >= end || bytes === 0) {
- return new ArrayBuffer(0);
- }
- var abv = new Uint8Array(arraybuffer);
- var result = new Uint8Array(end - start);
- for (var i = start, ii = 0; i < end; i++, ii++) {
- result[ii] = abv[i];
- }
- return result.buffer;
- };
- },{}],8:[function(_dereq_,module,exports){
- /**
- * Expose `Backoff`.
- */
- module.exports = Backoff;
- /**
- * Initialize backoff timer with `opts`.
- *
- * - `min` initial timeout in milliseconds [100]
- * - `max` max timeout [10000]
- * - `jitter` [0]
- * - `factor` [2]
- *
- * @param {Object} opts
- * @api public
- */
- function Backoff(opts) {
- opts = opts || {};
- this.ms = opts.min || 100;
- this.max = opts.max || 10000;
- this.factor = opts.factor || 2;
- this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
- this.attempts = 0;
- }
- /**
- * Return the backoff duration.
- *
- * @return {Number}
- * @api public
- */
- Backoff.prototype.duration = function(){
- var ms = this.ms * Math.pow(this.factor, this.attempts++);
- if (this.jitter) {
- var rand = Math.random();
- var deviation = Math.floor(rand * this.jitter * ms);
- ms = (Math.floor(rand * 10) & 1) == 0 ? ms - deviation : ms + deviation;
- }
- return Math.min(ms, this.max) | 0;
- };
- /**
- * Reset the number of attempts.
- *
- * @api public
- */
- Backoff.prototype.reset = function(){
- this.attempts = 0;
- };
- /**
- * Set the minimum duration
- *
- * @api public
- */
- Backoff.prototype.setMin = function(min){
- this.ms = min;
- };
- /**
- * Set the maximum duration
- *
- * @api public
- */
- Backoff.prototype.setMax = function(max){
- this.max = max;
- };
- /**
- * Set the jitter
- *
- * @api public
- */
- Backoff.prototype.setJitter = function(jitter){
- this.jitter = jitter;
- };
- },{}],9:[function(_dereq_,module,exports){
- /*
- * base64-arraybuffer
- * https://github.com/niklasvh/base64-arraybuffer
- *
- * Copyright (c) 2012 Niklas von Hertzen
- * Licensed under the MIT license.
- */
- (function(){
- "use strict";
- var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
- // Use a lookup table to find the index.
- var lookup = new Uint8Array(256);
- for (var i = 0; i < chars.length; i++) {
- lookup[chars.charCodeAt(i)] = i;
- }
- exports.encode = function(arraybuffer) {
- var bytes = new Uint8Array(arraybuffer),
- i, len = bytes.length, base64 = "";
- for (i = 0; i < len; i+=3) {
- base64 += chars[bytes[i] >> 2];
- base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
- base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
- base64 += chars[bytes[i + 2] & 63];
- }
- if ((len % 3) === 2) {
- base64 = base64.substring(0, base64.length - 1) + "=";
- } else if (len % 3 === 1) {
- base64 = base64.substring(0, base64.length - 2) + "==";
- }
- return base64;
- };
- exports.decode = function(base64) {
- var bufferLength = base64.length * 0.75,
- len = base64.length, i, p = 0,
- encoded1, encoded2, encoded3, encoded4;
- if (base64[base64.length - 1] === "=") {
- bufferLength--;
- if (base64[base64.length - 2] === "=") {
- bufferLength--;
- }
- }
- var arraybuffer = new ArrayBuffer(bufferLength),
- bytes = new Uint8Array(arraybuffer);
- for (i = 0; i < len; i+=4) {
- encoded1 = lookup[base64.charCodeAt(i)];
- encoded2 = lookup[base64.charCodeAt(i+1)];
- encoded3 = lookup[base64.charCodeAt(i+2)];
- encoded4 = lookup[base64.charCodeAt(i+3)];
- bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
- bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
- bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
- }
- return arraybuffer;
- };
- })();
- },{}],10:[function(_dereq_,module,exports){
- (function (global){
- /**
- * Create a blob builder even when vendor prefixes exist
- */
- var BlobBuilder = global.BlobBuilder
- || global.WebKitBlobBuilder
- || global.MSBlobBuilder
- || global.MozBlobBuilder;
- /**
- * Check if Blob constructor is supported
- */
- var blobSupported = (function() {
- try {
- var a = new Blob(['hi']);
- return a.size === 2;
- } catch(e) {
- return false;
- }
- })();
- /**
- * Check if Blob constructor supports ArrayBufferViews
- * Fails in Safari 6, so we need to map to ArrayBuffers there.
- */
- var blobSupportsArrayBufferView = blobSupported && (function() {
- try {
- var b = new Blob([new Uint8Array([1,2])]);
- return b.size === 2;
- } catch(e) {
- return false;
- }
- })();
- /**
- * Check if BlobBuilder is supported
- */
- var blobBuilderSupported = BlobBuilder
- && BlobBuilder.prototype.append
- && BlobBuilder.prototype.getBlob;
- /**
- * Helper function that maps ArrayBufferViews to ArrayBuffers
- * Used by BlobBuilder constructor and old browsers that didn't
- * support it in the Blob constructor.
- */
- function mapArrayBufferViews(ary) {
- for (var i = 0; i < ary.length; i++) {
- var chunk = ary[i];
- if (chunk.buffer instanceof ArrayBuffer) {
- var buf = chunk.buffer;
- // if this is a subarray, make a copy so we only
- // include the subarray region from the underlying buffer
- if (chunk.byteLength !== buf.byteLength) {
- var copy = new Uint8Array(chunk.byteLength);
- copy.set(new Uint8Array(buf, chunk.byteOffset, chunk.byteLength));
- buf = copy.buffer;
- }
- ary[i] = buf;
- }
- }
- }
- function BlobBuilderConstructor(ary, options) {
- options = options || {};
- var bb = new BlobBuilder();
- mapArrayBufferViews(ary);
- for (var i = 0; i < ary.length; i++) {
- bb.append(ary[i]);
- }
- return (options.type) ? bb.getBlob(options.type) : bb.getBlob();
- };
- function BlobConstructor(ary, options) {
- mapArrayBufferViews(ary);
- return new Blob(ary, options || {});
- };
- module.exports = (function() {
- if (blobSupported) {
- return blobSupportsArrayBufferView ? global.Blob : BlobConstructor;
- } else if (blobBuilderSupported) {
- return BlobBuilderConstructor;
- } else {
- return undefined;
- }
- })();
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{}],11:[function(_dereq_,module,exports){
- /**
- * Slice reference.
- */
- var slice = [].slice;
- /**
- * Bind `obj` to `fn`.
- *
- * @param {Object} obj
- * @param {Function|String} fn or string
- * @return {Function}
- * @api public
- */
- module.exports = function(obj, fn){
- if ('string' == typeof fn) fn = obj[fn];
- if ('function' != typeof fn) throw new Error('bind() requires a function');
- var args = slice.call(arguments, 2);
- return function(){
- return fn.apply(obj, args.concat(slice.call(arguments)));
- }
- };
- },{}],12:[function(_dereq_,module,exports){
- /**
- * Expose `Emitter`.
- */
- module.exports = Emitter;
- /**
- * Initialize a new `Emitter`.
- *
- * @api public
- */
- function Emitter(obj) {
- if (obj) return mixin(obj);
- };
- /**
- * Mixin the emitter properties.
- *
- * @param {Object} obj
- * @return {Object}
- * @api private
- */
- function mixin(obj) {
- for (var key in Emitter.prototype) {
- obj[key] = Emitter.prototype[key];
- }
- return obj;
- }
- /**
- * Listen on the given `event` with `fn`.
- *
- * @param {String} event
- * @param {Function} fn
- * @return {Emitter}
- * @api public
- */
- Emitter.prototype.on =
- Emitter.prototype.addEventListener = function(event, fn){
- this._callbacks = this._callbacks || {};
- (this._callbacks['$' + event] = this._callbacks['$' + event] || [])
- .push(fn);
- return this;
- };
- /**
- * Adds an `event` listener that will be invoked a single
- * time then automatically removed.
- *
- * @param {String} event
- * @param {Function} fn
- * @return {Emitter}
- * @api public
- */
- Emitter.prototype.once = function(event, fn){
- function on() {
- this.off(event, on);
- fn.apply(this, arguments);
- }
- on.fn = fn;
- this.on(event, on);
- return this;
- };
- /**
- * Remove the given callback for `event` or all
- * registered callbacks.
- *
- * @param {String} event
- * @param {Function} fn
- * @return {Emitter}
- * @api public
- */
- Emitter.prototype.off =
- Emitter.prototype.removeListener =
- Emitter.prototype.removeAllListeners =
- Emitter.prototype.removeEventListener = function(event, fn){
- this._callbacks = this._callbacks || {};
- // all
- if (0 == arguments.length) {
- this._callbacks = {};
- return this;
- }
- // specific event
- var callbacks = this._callbacks['$' + event];
- if (!callbacks) return this;
- // remove all handlers
- if (1 == arguments.length) {
- delete this._callbacks['$' + event];
- return this;
- }
- // remove specific handler
- var cb;
- for (var i = 0; i < callbacks.length; i++) {
- cb = callbacks[i];
- if (cb === fn || cb.fn === fn) {
- callbacks.splice(i, 1);
- break;
- }
- }
- return this;
- };
- /**
- * Emit `event` with the given args.
- *
- * @param {String} event
- * @param {Mixed} ...
- * @return {Emitter}
- */
- Emitter.prototype.emit = function(event){
- this._callbacks = this._callbacks || {};
- var args = [].slice.call(arguments, 1)
- , callbacks = this._callbacks['$' + event];
- if (callbacks) {
- callbacks = callbacks.slice(0);
- for (var i = 0, len = callbacks.length; i < len; ++i) {
- callbacks[i].apply(this, args);
- }
- }
- return this;
- };
- /**
- * Return array of callbacks for `event`.
- *
- * @param {String} event
- * @return {Array}
- * @api public
- */
- Emitter.prototype.listeners = function(event){
- this._callbacks = this._callbacks || {};
- return this._callbacks['$' + event] || [];
- };
- /**
- * Check if this emitter has `event` handlers.
- *
- * @param {String} event
- * @return {Boolean}
- * @api public
- */
- Emitter.prototype.hasListeners = function(event){
- return !! this.listeners(event).length;
- };
- },{}],13:[function(_dereq_,module,exports){
- module.exports = function(a, b){
- var fn = function(){};
- fn.prototype = b.prototype;
- a.prototype = new fn;
- a.prototype.constructor = a;
- };
- },{}],14:[function(_dereq_,module,exports){
- /**
- * This is the web browser implementation of `debug()`.
- *
- * Expose `debug()` as the module.
- */
- exports = module.exports = _dereq_('./debug');
- exports.log = log;
- exports.formatArgs = formatArgs;
- exports.save = save;
- exports.load = load;
- exports.useColors = useColors;
- exports.storage = 'undefined' != typeof chrome
- && 'undefined' != typeof chrome.storage
- ? chrome.storage.local
- : localstorage();
- /**
- * Colors.
- */
- exports.colors = [
- 'lightseagreen',
- 'forestgreen',
- 'goldenrod',
- 'dodgerblue',
- 'darkorchid',
- 'crimson'
- ];
- /**
- * Currently only WebKit-based Web Inspectors, Firefox >= v31,
- * and the Firebug extension (any Firefox version) are known
- * to support "%c" CSS customizations.
- *
- * TODO: add a `localStorage` variable to explicitly enable/disable colors
- */
- function useColors() {
- // is webkit? http://stackoverflow.com/a/16459606/376773
- return ('WebkitAppearance' in document.documentElement.style) ||
- // is firebug? http://stackoverflow.com/a/398120/376773
- (window.console && (console.firebug || (console.exception && console.table))) ||
- // is firefox >= v31?
- // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
- (navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31);
- }
- /**
- * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
- */
- exports.formatters.j = function(v) {
- return JSON.stringify(v);
- };
- /**
- * Colorize log arguments if enabled.
- *
- * @api public
- */
- function formatArgs() {
- var args = arguments;
- var useColors = this.useColors;
- args[0] = (useColors ? '%c' : '')
- + this.namespace
- + (useColors ? ' %c' : ' ')
- + args[0]
- + (useColors ? '%c ' : ' ')
- + '+' + exports.humanize(this.diff);
- if (!useColors) return args;
- var c = 'color: ' + this.color;
- args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));
- // the final "%c" is somewhat tricky, because there could be other
- // arguments passed either before or after the %c, so we need to
- // figure out the correct index to insert the CSS into
- var index = 0;
- var lastC = 0;
- args[0].replace(/%[a-z%]/g, function(match) {
- if ('%%' === match) return;
- index++;
- if ('%c' === match) {
- // we only are interested in the *last* %c
- // (the user may have provided their own)
- lastC = index;
- }
- });
- args.splice(lastC, 0, c);
- return args;
- }
- /**
- * Invokes `console.log()` when available.
- * No-op when `console.log` is not a "function".
- *
- * @api public
- */
- function log() {
- // this hackery is required for IE8/9, where
- // the `console.log` function doesn't have 'apply'
- return 'object' === typeof console
- && console.log
- && Function.prototype.apply.call(console.log, console, arguments);
- }
- /**
- * Save `namespaces`.
- *
- * @param {String} namespaces
- * @api private
- */
- function save(namespaces) {
- try {
- if (null == namespaces) {
- exports.storage.removeItem('debug');
- } else {
- exports.storage.debug = namespaces;
- }
- } catch(e) {}
- }
- /**
- * Load `namespaces`.
- *
- * @return {String} returns the previously persisted debug modes
- * @api private
- */
- function load() {
- var r;
- try {
- r = exports.storage.debug;
- } catch(e) {}
- return r;
- }
- /**
- * Enable namespaces listed in `localStorage.debug` initially.
- */
- exports.enable(load());
- /**
- * Localstorage attempts to return the localstorage.
- *
- * This is necessary because safari throws
- * when a user disables cookies/localstorage
- * and you attempt to access it.
- *
- * @return {LocalStorage}
- * @api private
- */
- function localstorage(){
- try {
- return chrome.storage.local;
- } catch (e) {}
- }
- },{"./debug":15}],15:[function(_dereq_,module,exports){
- /**
- * This is the common logic for both the Node.js and web browser
- * implementations of `debug()`.
- *
- * Expose `debug()` as the module.
- */
- exports = module.exports = debug;
- exports.coerce = coerce;
- exports.disable = disable;
- exports.enable = enable;
- exports.enabled = enabled;
- exports.humanize = _dereq_('ms');
- /**
- * The currently active debug mode names, and names to skip.
- */
- exports.names = [];
- exports.skips = [];
- /**
- * Map of special "%n" handling functions, for the debug "format" argument.
- *
- * Valid key names are a single, lowercased letter, i.e. "n".
- */
- exports.formatters = {};
- /**
- * Previously assigned color.
- */
- var prevColor = 0;
- /**
- * Previous log timestamp.
- */
- var prevTime;
- /**
- * Select a color.
- *
- * @return {Number}
- * @api private
- */
- function selectColor() {
- return exports.colors[prevColor++ % exports.colors.length];
- }
- /**
- * Create a debugger with the given `namespace`.
- *
- * @param {String} namespace
- * @return {Function}
- * @api public
- */
- function debug(namespace) {
- // define the `disabled` version
- function disabled() {
- }
- disabled.enabled = false;
- // define the `enabled` version
- function enabled() {
- var self = enabled;
- // set `diff` timestamp
- var curr = +new Date();
- var ms = curr - (prevTime || curr);
- self.diff = ms;
- self.prev = prevTime;
- self.curr = curr;
- prevTime = curr;
- // add the `color` if not set
- if (null == self.useColors) self.useColors = exports.useColors();
- if (null == self.color && self.useColors) self.color = selectColor();
- var args = Array.prototype.slice.call(arguments);
- args[0] = exports.coerce(args[0]);
- if ('string' !== typeof args[0]) {
- // anything else let's inspect with %o
- args = ['%o'].concat(args);
- }
- // apply any `formatters` transformations
- var index = 0;
- args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {
- // if we encounter an escaped % then don't increase the array index
- if (match === '%%') return match;
- index++;
- var formatter = exports.formatters[format];
- if ('function' === typeof formatter) {
- var val = args[index];
- match = formatter.call(self, val);
- // now we need to remove `args[index]` since it's inlined in the `format`
- args.splice(index, 1);
- index--;
- }
- return match;
- });
- if ('function' === typeof exports.formatArgs) {
- args = exports.formatArgs.apply(self, args);
- }
- var logFn = enabled.log || exports.log || console.log.bind(console);
- logFn.apply(self, args);
- }
- enabled.enabled = true;
- var fn = exports.enabled(namespace) ? enabled : disabled;
- fn.namespace = namespace;
- return fn;
- }
- /**
- * Enables a debug mode by namespaces. This can include modes
- * separated by a colon and wildcards.
- *
- * @param {String} namespaces
- * @api public
- */
- function enable(namespaces) {
- exports.save(namespaces);
- var split = (namespaces || '').split(/[\s,]+/);
- var len = split.length;
- for (var i = 0; i < len; i++) {
- if (!split[i]) continue; // ignore empty strings
- namespaces = split[i].replace(/\*/g, '.*?');
- if (namespaces[0] === '-') {
- exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
- } else {
- exports.names.push(new RegExp('^' + namespaces + '$'));
- }
- }
- }
- /**
- * Disable debug output.
- *
- * @api public
- */
- function disable() {
- exports.enable('');
- }
- /**
- * Returns true if the given mode name is enabled, false otherwise.
- *
- * @param {String} name
- * @return {Boolean}
- * @api public
- */
- function enabled(name) {
- var i, len;
- for (i = 0, len = exports.skips.length; i < len; i++) {
- if (exports.skips[i].test(name)) {
- return false;
- }
- }
- for (i = 0, len = exports.names.length; i < len; i++) {
- if (exports.names[i].test(name)) {
- return true;
- }
- }
- return false;
- }
- /**
- * Coerce `val`.
- *
- * @param {Mixed} val
- * @return {Mixed}
- * @api private
- */
- function coerce(val) {
- if (val instanceof Error) return val.stack || val.message;
- return val;
- }
- },{"ms":35}],16:[function(_dereq_,module,exports){
- module.exports = _dereq_('./lib/');
- },{"./lib/":17}],17:[function(_dereq_,module,exports){
- module.exports = _dereq_('./socket');
- /**
- * Exports parser
- *
- * @api public
- *
- */
- module.exports.parser = _dereq_('engine.io-parser');
- },{"./socket":18,"engine.io-parser":27}],18:[function(_dereq_,module,exports){
- (function (global){
- /**
- * Module dependencies.
- */
- var transports = _dereq_('./transports');
- var Emitter = _dereq_('component-emitter');
- var debug = _dereq_('debug')('engine.io-client:socket');
- var index = _dereq_('indexof');
- var parser = _dereq_('engine.io-parser');
- var parseuri = _dereq_('parseuri');
- var parsejson = _dereq_('parsejson');
- var parseqs = _dereq_('parseqs');
- /**
- * Module exports.
- */
- module.exports = Socket;
- /**
- * Noop function.
- *
- * @api private
- */
- function noop(){}
- /**
- * Socket constructor.
- *
- * @param {String|Object} uri or options
- * @param {Object} options
- * @api public
- */
- function Socket(uri, opts){
- if (!(this instanceof Socket)) return new Socket(uri, opts);
- opts = opts || {};
- if (uri && 'object' == typeof uri) {
- opts = uri;
- uri = null;
- }
- if (uri) {
- uri = parseuri(uri);
- opts.hostname = uri.host;
- opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';
- opts.port = uri.port;
- if (uri.query) opts.query = uri.query;
- } else if (opts.host) {
- opts.hostname = parseuri(opts.host).host;
- }
- this.secure = null != opts.secure ? opts.secure :
- (global.location && 'https:' == location.protocol);
- if (opts.hostname && !opts.port) {
- // if no port is specified manually, use the protocol default
- opts.port = this.secure ? '443' : '80';
- }
- this.agent = opts.agent || false;
- this.hostname = opts.hostname ||
- (global.location ? location.hostname : 'localhost');
- this.port = opts.port || (global.location && location.port ?
- location.port :
- (this.secure ? 443 : 80));
- this.query = opts.query || {};
- if ('string' == typeof this.query) this.query = parseqs.decode(this.query);
- this.upgrade = false !== opts.upgrade;
- this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
- this.forceJSONP = !!opts.forceJSONP;
- this.jsonp = false !== opts.jsonp;
- this.forceBase64 = !!opts.forceBase64;
- this.enablesXDR = !!opts.enablesXDR;
- this.timestampParam = opts.timestampParam || 't';
- this.timestampRequests = opts.timestampRequests;
- this.transports = opts.transports || ['polling', 'websocket'];
- this.readyState = '';
- this.writeBuffer = [];
- this.policyPort = opts.policyPort || 843;
- this.rememberUpgrade = opts.rememberUpgrade || false;
- this.binaryType = null;
- this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
- this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;
- if (true === this.perMessageDeflate) this.perMessageDeflate = {};
- if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {
- this.perMessageDeflate.threshold = 1024;
- }
- // SSL options for Node.js client
- this.pfx = opts.pfx || null;
- this.key = opts.key || null;
- this.passphrase = opts.passphrase || null;
- this.cert = opts.cert || null;
- this.ca = opts.ca || null;
- this.ciphers = opts.ciphers || null;
- this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? true : opts.rejectUnauthorized;
- // other options for Node.js client
- var freeGlobal = typeof global == 'object' && global;
- if (freeGlobal.global === freeGlobal) {
- if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {
- this.extraHeaders = opts.extraHeaders;
- }
- }
- this.open();
- }
- Socket.priorWebsocketSuccess = false;
- /**
- * Mix in `Emitter`.
- */
- Emitter(Socket.prototype);
- /**
- * Protocol version.
- *
- * @api public
- */
- Socket.protocol = parser.protocol; // this is an int
- /**
- * Expose deps for legacy compatibility
- * and standalone browser access.
- */
- Socket.Socket = Socket;
- Socket.Transport = _dereq_('./transport');
- Socket.transports = _dereq_('./transports');
- Socket.parser = _dereq_('engine.io-parser');
- /**
- * Creates transport of the given type.
- *
- * @param {String} transport name
- * @return {Transport}
- * @api private
- */
- Socket.prototype.createTransport = function (name) {
- debug('creating transport "%s"', name);
- var query = clone(this.query);
- // append engine.io protocol identifier
- query.EIO = parser.protocol;
- // transport name
- query.transport = name;
- // session id if we already have one
- if (this.id) query.sid = this.id;
- var transport = new transports[name]({
- agent: this.agent,
- hostname: this.hostname,
- port: this.port,
- secure: this.secure,
- path: this.path,
- query: query,
- forceJSONP: this.forceJSONP,
- jsonp: this.jsonp,
- forceBase64: this.forceBase64,
- enablesXDR: this.enablesXDR,
- timestampRequests: this.timestampRequests,
- timestampParam: this.timestampParam,
- policyPort: this.policyPort,
- socket: this,
- pfx: this.pfx,
- key: this.key,
- passphrase: this.passphrase,
- cert: this.cert,
- ca: this.ca,
- ciphers: this.ciphers,
- rejectUnauthorized: this.rejectUnauthorized,
- perMessageDeflate: this.perMessageDeflate,
- extraHeaders: this.extraHeaders
- });
- return transport;
- };
- function clone (obj) {
- var o = {};
- for (var i in obj) {
- if (obj.hasOwnProperty(i)) {
- o[i] = obj[i];
- }
- }
- return o;
- }
- /**
- * Initializes transport to use and starts probe.
- *
- * @api private
- */
- Socket.prototype.open = function () {
- var transport;
- if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') != -1) {
- transport = 'websocket';
- } else if (0 === this.transports.length) {
- // Emit error on next tick so it can be listened to
- var self = this;
- setTimeout(function() {
- self.emit('error', 'No transports available');
- }, 0);
- return;
- } else {
- transport = this.transports[0];
- }
- this.readyState = 'opening';
- // Retry with the next transport if the transport is disabled (jsonp: false)
- try {
- transport = this.createTransport(transport);
- } catch (e) {
- this.transports.shift();
- this.open();
- return;
- }
- transport.open();
- this.setTransport(transport);
- };
- /**
- * Sets the current transport. Disables the existing one (if any).
- *
- * @api private
- */
- Socket.prototype.setTransport = function(transport){
- debug('setting transport %s', transport.name);
- var self = this;
- if (this.transport) {
- debug('clearing existing transport %s', this.transport.name);
- this.transport.removeAllListeners();
- }
- // set up transport
- this.transport = transport;
- // set up transport listeners
- transport
- .on('drain', function(){
- self.onDrain();
- })
- .on('packet', function(packet){
- self.onPacket(packet);
- })
- .on('error', function(e){
- self.onError(e);
- })
- .on('close', function(){
- self.onClose('transport close');
- });
- };
- /**
- * Probes a transport.
- *
- * @param {String} transport name
- * @api private
- */
- Socket.prototype.probe = function (name) {
- debug('probing transport "%s"', name);
- var transport = this.createTransport(name, { probe: 1 })
- , failed = false
- , self = this;
- Socket.priorWebsocketSuccess = false;
- function onTransportOpen(){
- if (self.onlyBinaryUpgrades) {
- var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
- failed = failed || upgradeLosesBinary;
- }
- if (failed) return;
- debug('probe transport "%s" opened', name);
- transport.send([{ type: 'ping', data: 'probe' }]);
- transport.once('packet', function (msg) {
- if (failed) return;
- if ('pong' == msg.type && 'probe' == msg.data) {
- debug('probe transport "%s" pong', name);
- self.upgrading = true;
- self.emit('upgrading', transport);
- if (!transport) return;
- Socket.priorWebsocketSuccess = 'websocket' == transport.name;
- debug('pausing current transport "%s"', self.transport.name);
- self.transport.pause(function () {
- if (failed) return;
- if ('closed' == self.readyState) return;
- debug('changing transport and sending upgrade packet');
- cleanup();
- self.setTransport(transport);
- transport.send([{ type: 'upgrade' }]);
- self.emit('upgrade', transport);
- transport = null;
- self.upgrading = false;
- self.flush();
- });
- } else {
- debug('probe transport "%s" failed', name);
- var err = new Error('probe error');
- err.transport = transport.name;
- self.emit('upgradeError', err);
- }
- });
- }
- function freezeTransport() {
- if (failed) return;
- // Any callback called by transport should be ignored since now
- failed = true;
- cleanup();
- transport.close();
- transport = null;
- }
- //Handle any error that happens while probing
- function onerror(err) {
- var error = new Error('probe error: ' + err);
- error.transport = transport.name;
- freezeTransport();
- debug('probe transport "%s" failed because of error: %s', name, err);
- self.emit('upgradeError', error);
- }
- function onTransportClose(){
- onerror("transport closed");
- }
- //When the socket is closed while we're probing
- function onclose(){
- onerror("socket closed");
- }
- //When the socket is upgraded while we're probing
- function onupgrade(to){
- if (transport && to.name != transport.name) {
- debug('"%s" works - aborting "%s"', to.name, transport.name);
- freezeTransport();
- }
- }
- //Remove all listeners on the transport and on self
- function cleanup(){
- transport.removeListener('open', onTransportOpen);
- transport.removeListener('error', onerror);
- transport.removeListener('close', onTransportClose);
- self.removeListener('close', onclose);
- self.removeListener('upgrading', onupgrade);
- }
- transport.once('open', onTransportOpen);
- transport.once('error', onerror);
- transport.once('close', onTransportClose);
- this.once('close', onclose);
- this.once('upgrading', onupgrade);
- transport.open();
- };
- /**
- * Called when connection is deemed open.
- *
- * @api public
- */
- Socket.prototype.onOpen = function () {
- debug('socket open');
- this.readyState = 'open';
- Socket.priorWebsocketSuccess = 'websocket' == this.transport.name;
- this.emit('open');
- this.flush();
- // we check for `readyState` in case an `open`
- // listener already closed the socket
- if ('open' == this.readyState && this.upgrade && this.transport.pause) {
- debug('starting upgrade probes');
- for (var i = 0, l = this.upgrades.length; i < l; i++) {
- this.probe(this.upgrades[i]);
- }
- }
- };
- /**
- * Handles a packet.
- *
- * @api private
- */
- Socket.prototype.onPacket = function (packet) {
- if ('opening' == this.readyState || 'open' == this.readyState) {
- debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
- this.emit('packet', packet);
- // Socket is live - any packet counts
- this.emit('heartbeat');
- switch (packet.type) {
- case 'open':
- this.onHandshake(parsejson(packet.data));
- break;
- case 'pong':
- this.setPing();
- this.emit('pong');
- break;
- case 'error':
- var err = new Error('server error');
- err.code = packet.data;
- this.onError(err);
- break;
- case 'message':
- this.emit('data', packet.data);
- this.emit('message', packet.data);
- break;
- }
- } else {
- debug('packet received with socket readyState "%s"', this.readyState);
- }
- };
- /**
- * Called upon handshake completion.
- *
- * @param {Object} handshake obj
- * @api private
- */
- Socket.prototype.onHandshake = function (data) {
- this.emit('handshake', data);
- this.id = data.sid;
- this.transport.query.sid = data.sid;
- this.upgrades = this.filterUpgrades(data.upgrades);
- this.pingInterval = data.pingInterval;
- this.pingTimeout = data.pingTimeout;
- this.onOpen();
- // In case open handler closes socket
- if ('closed' == this.readyState) return;
- this.setPing();
- // Prolong liveness of socket on heartbeat
- this.removeListener('heartbeat', this.onHeartbeat);
- this.on('heartbeat', this.onHeartbeat);
- };
- /**
- * Resets ping timeout.
- *
- * @api private
- */
- Socket.prototype.onHeartbeat = function (timeout) {
- clearTimeout(this.pingTimeoutTimer);
- var self = this;
- self.pingTimeoutTimer = setTimeout(function () {
- if ('closed' == self.readyState) return;
- self.onClose('ping timeout');
- }, timeout || (self.pingInterval + self.pingTimeout));
- };
- /**
- * Pings server every `this.pingInterval` and expects response
- * within `this.pingTimeout` or closes connection.
- *
- * @api private
- */
- Socket.prototype.setPing = function () {
- var self = this;
- clearTimeout(self.pingIntervalTimer);
- self.pingIntervalTimer = setTimeout(function () {
- debug('writing ping packet - expecting pong within %sms', self.pingTimeout);
- self.ping();
- self.onHeartbeat(self.pingTimeout);
- }, self.pingInterval);
- };
- /**
- * Sends a ping packet.
- *
- * @api private
- */
- Socket.prototype.ping = function () {
- var self = this;
- this.sendPacket('ping', function(){
- self.emit('ping');
- });
- };
- /**
- * Called on `drain` event
- *
- * @api private
- */
- Socket.prototype.onDrain = function() {
- this.writeBuffer.splice(0, this.prevBufferLen);
- // setting prevBufferLen = 0 is very important
- // for example, when upgrading, upgrade packet is sent over,
- // and a nonzero prevBufferLen could cause problems on `drain`
- this.prevBufferLen = 0;
- if (0 === this.writeBuffer.length) {
- this.emit('drain');
- } else {
- this.flush();
- }
- };
- /**
- * Flush write buffers.
- *
- * @api private
- */
- Socket.prototype.flush = function () {
- if ('closed' != this.readyState && this.transport.writable &&
- !this.upgrading && this.writeBuffer.length) {
- debug('flushing %d packets in socket', this.writeBuffer.length);
- this.transport.send(this.writeBuffer);
- // keep track of current length of writeBuffer
- // splice writeBuffer and callbackBuffer on `drain`
- this.prevBufferLen = this.writeBuffer.length;
- this.emit('flush');
- }
- };
- /**
- * Sends a message.
- *
- * @param {String} message.
- * @param {Function} callback function.
- * @param {Object} options.
- * @return {Socket} for chaining.
- * @api public
- */
- Socket.prototype.write =
- Socket.prototype.send = function (msg, options, fn) {
- this.sendPacket('message', msg, options, fn);
- return this;
- };
- /**
- * Sends a packet.
- *
- * @param {String} packet type.
- * @param {String} data.
- * @param {Object} options.
- * @param {Function} callback function.
- * @api private
- */
- Socket.prototype.sendPacket = function (type, data, options, fn) {
- if('function' == typeof data) {
- fn = data;
- data = undefined;
- }
- if ('function' == typeof options) {
- fn = options;
- options = null;
- }
- if ('closing' == this.readyState || 'closed' == this.readyState) {
- return;
- }
- options = options || {};
- options.compress = false !== options.compress;
- var packet = {
- type: type,
- data: data,
- options: options
- };
- this.emit('packetCreate', packet);
- this.writeBuffer.push(packet);
- if (fn) this.once('flush', fn);
- this.flush();
- };
- /**
- * Closes the connection.
- *
- * @api private
- */
- Socket.prototype.close = function () {
- if ('opening' == this.readyState || 'open' == this.readyState) {
- this.readyState = 'closing';
- var self = this;
- if (this.writeBuffer.length) {
- this.once('drain', function() {
- if (this.upgrading) {
- waitForUpgrade();
- } else {
- close();
- }
- });
- } else if (this.upgrading) {
- waitForUpgrade();
- } else {
- close();
- }
- }
- function close() {
- self.onClose('forced close');
- debug('socket closing - telling transport to close');
- self.transport.close();
- }
- function cleanupAndClose() {
- self.removeListener('upgrade', cleanupAndClose);
- self.removeListener('upgradeError', cleanupAndClose);
- close();
- }
- function waitForUpgrade() {
- // wait for upgrade to finish since we can't send packets while pausing a transport
- self.once('upgrade', cleanupAndClose);
- self.once('upgradeError', cleanupAndClose);
- }
- return this;
- };
- /**
- * Called upon transport error
- *
- * @api private
- */
- Socket.prototype.onError = function (err) {
- debug('socket error %j', err);
- Socket.priorWebsocketSuccess = false;
- this.emit('error', err);
- this.onClose('transport error', err);
- };
- /**
- * Called upon transport close.
- *
- * @api private
- */
- Socket.prototype.onClose = function (reason, desc) {
- if ('opening' == this.readyState || 'open' == this.readyState || 'closing' == this.readyState) {
- debug('socket close with reason: "%s"', reason);
- var self = this;
- // clear timers
- clearTimeout(this.pingIntervalTimer);
- clearTimeout(this.pingTimeoutTimer);
- // stop event from firing again for transport
- this.transport.removeAllListeners('close');
- // ensure transport won't stay open
- this.transport.close();
- // ignore further transport communication
- this.transport.removeAllListeners();
- // set ready state
- this.readyState = 'closed';
- // clear session id
- this.id = null;
- // emit close event
- this.emit('close', reason, desc);
- // clean buffers after, so users can still
- // grab the buffers on `close` event
- self.writeBuffer = [];
- self.prevBufferLen = 0;
- }
- };
- /**
- * Filters upgrades, returning only those matching client transports.
- *
- * @param {Array} server upgrades
- * @api private
- *
- */
- Socket.prototype.filterUpgrades = function (upgrades) {
- var filteredUpgrades = [];
- for (var i = 0, j = upgrades.length; i<j; i++) {
- if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
- }
- return filteredUpgrades;
- };
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"./transport":19,"./transports":20,"component-emitter":26,"debug":14,"engine.io-parser":27,"indexof":32,"parsejson":36,"parseqs":37,"parseuri":38}],19:[function(_dereq_,module,exports){
- /**
- * Module dependencies.
- */
- var parser = _dereq_('engine.io-parser');
- var Emitter = _dereq_('component-emitter');
- /**
- * Module exports.
- */
- module.exports = Transport;
- /**
- * Transport abstract constructor.
- *
- * @param {Object} options.
- * @api private
- */
- function Transport (opts) {
- this.path = opts.path;
- this.hostname = opts.hostname;
- this.port = opts.port;
- this.secure = opts.secure;
- this.query = opts.query;
- this.timestampParam = opts.timestampParam;
- this.timestampRequests = opts.timestampRequests;
- this.readyState = '';
- this.agent = opts.agent || false;
- this.socket = opts.socket;
- this.enablesXDR = opts.enablesXDR;
- // SSL options for Node.js client
- this.pfx = opts.pfx;
- this.key = opts.key;
- this.passphrase = opts.passphrase;
- this.cert = opts.cert;
- this.ca = opts.ca;
- this.ciphers = opts.ciphers;
- this.rejectUnauthorized = opts.rejectUnauthorized;
- // other options for Node.js client
- this.extraHeaders = opts.extraHeaders;
- }
- /**
- * Mix in `Emitter`.
- */
- Emitter(Transport.prototype);
- /**
- * Emits an error.
- *
- * @param {String} str
- * @return {Transport} for chaining
- * @api public
- */
- Transport.prototype.onError = function (msg, desc) {
- var err = new Error(msg);
- err.type = 'TransportError';
- err.description = desc;
- this.emit('error', err);
- return this;
- };
- /**
- * Opens the transport.
- *
- * @api public
- */
- Transport.prototype.open = function () {
- if ('closed' == this.readyState || '' == this.readyState) {
- this.readyState = 'opening';
- this.doOpen();
- }
- return this;
- };
- /**
- * Closes the transport.
- *
- * @api private
- */
- Transport.prototype.close = function () {
- if ('opening' == this.readyState || 'open' == this.readyState) {
- this.doClose();
- this.onClose();
- }
- return this;
- };
- /**
- * Sends multiple packets.
- *
- * @param {Array} packets
- * @api private
- */
- Transport.prototype.send = function(packets){
- if ('open' == this.readyState) {
- this.write(packets);
- } else {
- throw new Error('Transport not open');
- }
- };
- /**
- * Called upon open
- *
- * @api private
- */
- Transport.prototype.onOpen = function () {
- this.readyState = 'open';
- this.writable = true;
- this.emit('open');
- };
- /**
- * Called with data.
- *
- * @param {String} data
- * @api private
- */
- Transport.prototype.onData = function(data){
- var packet = parser.decodePacket(data, this.socket.binaryType);
- this.onPacket(packet);
- };
- /**
- * Called with a decoded packet.
- */
- Transport.prototype.onPacket = function (packet) {
- this.emit('packet', packet);
- };
- /**
- * Called upon close.
- *
- * @api private
- */
- Transport.prototype.onClose = function () {
- this.readyState = 'closed';
- this.emit('close');
- };
- },{"component-emitter":26,"engine.io-parser":27}],20:[function(_dereq_,module,exports){
- (function (global){
- /**
- * Module dependencies
- */
- var XMLHttpRequest = _dereq_('xmlhttprequest-ssl');
- var XHR = _dereq_('./polling-xhr');
- var JSONP = _dereq_('./polling-jsonp');
- var websocket = _dereq_('./websocket');
- /**
- * Export transports.
- */
- exports.polling = polling;
- exports.websocket = websocket;
- /**
- * Polling transport polymorphic constructor.
- * Decides on xhr vs jsonp based on feature detection.
- *
- * @api private
- */
- function polling(opts){
- var xhr;
- var xd = false;
- var xs = false;
- var jsonp = false !== opts.jsonp;
- if (global.location) {
- var isSSL = 'https:' == location.protocol;
- var port = location.port;
- // some user agents have empty `location.port`
- if (!port) {
- port = isSSL ? 443 : 80;
- }
- xd = opts.hostname != location.hostname || port != opts.port;
- xs = opts.secure != isSSL;
- }
- opts.xdomain = xd;
- opts.xscheme = xs;
- xhr = new XMLHttpRequest(opts);
- if ('open' in xhr && !opts.forceJSONP) {
- return new XHR(opts);
- } else {
- if (!jsonp) throw new Error('JSONP disabled');
- return new JSONP(opts);
- }
- }
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"./polling-jsonp":21,"./polling-xhr":22,"./websocket":24,"xmlhttprequest-ssl":25}],21:[function(_dereq_,module,exports){
- (function (global){
- /**
- * Module requirements.
- */
- var Polling = _dereq_('./polling');
- var inherit = _dereq_('component-inherit');
- /**
- * Module exports.
- */
- module.exports = JSONPPolling;
- /**
- * Cached regular expressions.
- */
- var rNewline = /\n/g;
- var rEscapedNewline = /\\n/g;
- /**
- * Global JSONP callbacks.
- */
- var callbacks;
- /**
- * Callbacks count.
- */
- var index = 0;
- /**
- * Noop.
- */
- function empty () { }
- /**
- * JSONP Polling constructor.
- *
- * @param {Object} opts.
- * @api public
- */
- function JSONPPolling (opts) {
- Polling.call(this, opts);
- this.query = this.query || {};
- // define global callbacks array if not present
- // we do this here (lazily) to avoid unneeded global pollution
- if (!callbacks) {
- // we need to consider multiple engines in the same page
- if (!global.___eio) global.___eio = [];
- callbacks = global.___eio;
- }
- // callback identifier
- this.index = callbacks.length;
- // add callback to jsonp global
- var self = this;
- callbacks.push(function (msg) {
- self.onData(msg);
- });
- // append to query string
- this.query.j = this.index;
- // prevent spurious errors from being emitted when the window is unloaded
- if (global.document && global.addEventListener) {
- // global.addEventListener('beforeunload', function () {
- // if (self.script) self.script.onerror = empty;
- // }, false);
- }
- }
- /**
- * Inherits from Polling.
- */
- inherit(JSONPPolling, Polling);
- /*
- * JSONP only supports binary as base64 encoded strings
- */
- JSONPPolling.prototype.supportsBinary = false;
- /**
- * Closes the socket.
- *
- * @api private
- */
- JSONPPolling.prototype.doClose = function () {
- if (this.script) {
- this.script.parentNode.removeChild(this.script);
- this.script = null;
- }
- if (this.form) {
- this.form.parentNode.removeChild(this.form);
- this.form = null;
- this.iframe = null;
- }
- Polling.prototype.doClose.call(this);
- };
- /**
- * Starts a poll cycle.
- *
- * @api private
- */
- JSONPPolling.prototype.doPoll = function () {
- var self = this;
- var script = document.createElement('script');
- if (this.script) {
- this.script.parentNode.removeChild(this.script);
- this.script = null;
- }
- script.async = true;
- script.src = this.uri();
- script.onerror = function(e){
- self.onError('jsonp poll error',e);
- };
- var insertAt = document.getElementsByTagName('script')[0];
- if (insertAt) {
- insertAt.parentNode.insertBefore(script, insertAt);
- }
- else {
- (document.head || document.body).appendChild(script);
- }
- this.script = script;
- var isUAgecko = 'undefined' != typeof navigator && /gecko/i.test(navigator.userAgent);
-
- if (isUAgecko) {
- setTimeout(function () {
- var iframe = document.createElement('iframe');
- document.body.appendChild(iframe);
- document.body.removeChild(iframe);
- }, 100);
- }
- };
- /**
- * Writes with a hidden iframe.
- *
- * @param {String} data to send
- * @param {Function} called upon flush.
- * @api private
- */
- JSONPPolling.prototype.doWrite = function (data, fn) {
- var self = this;
- if (!this.form) {
- var form = document.createElement('form');
- var area = document.createElement('textarea');
- var id = this.iframeId = 'eio_iframe_' + this.index;
- var iframe;
- form.className = 'socketio';
- form.style.position = 'absolute';
- form.style.top = '-1000px';
- form.style.left = '-1000px';
- form.target = id;
- form.method = 'POST';
- form.setAttribute('accept-charset', 'utf-8');
- area.name = 'd';
- form.appendChild(area);
- document.body.appendChild(form);
- this.form = form;
- this.area = area;
- }
- this.form.action = this.uri();
- function complete () {
- initIframe();
- fn();
- }
- function initIframe () {
- if (self.iframe) {
- try {
- self.form.removeChild(self.iframe);
- } catch (e) {
- self.onError('jsonp polling iframe removal error', e);
- }
- }
- try {
- // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
- var html = '<iframe src="javascript:0" name="'+ self.iframeId +'">';
- iframe = document.createElement(html);
- } catch (e) {
- iframe = document.createElement('iframe');
- iframe.name = self.iframeId;
- iframe.src = 'javascript:0';
- }
- iframe.id = self.iframeId;
- self.form.appendChild(iframe);
- self.iframe = iframe;
- }
- initIframe();
- // escape \n to prevent it from being converted into \r\n by some UAs
- // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
- data = data.replace(rEscapedNewline, '\\\n');
- this.area.value = data.replace(rNewline, '\\n');
- try {
- this.form.submit();
- } catch(e) {}
- if (this.iframe.attachEvent) {
- this.iframe.onreadystatechange = function(){
- if (self.iframe.readyState == 'complete') {
- complete();
- }
- };
- } else {
- this.iframe.onload = complete;
- }
- };
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"./polling":23,"component-inherit":13}],22:[function(_dereq_,module,exports){
- (function (global){
- /**
- * Module requirements.
- */
- var XMLHttpRequest = _dereq_('xmlhttprequest-ssl');
- var Polling = _dereq_('./polling');
- var Emitter = _dereq_('component-emitter');
- var inherit = _dereq_('component-inherit');
- var debug = _dereq_('debug')('engine.io-client:polling-xhr');
- /**
- * Module exports.
- */
- module.exports = XHR;
- module.exports.Request = Request;
- /**
- * Empty function
- */
- function empty(){}
- /**
- * XHR Polling constructor.
- *
- * @param {Object} opts
- * @api public
- */
- function XHR(opts){
- Polling.call(this, opts);
- if (global.location) {
- var isSSL = 'https:' == location.protocol;
- var port = location.port;
- // some user agents have empty `location.port`
- if (!port) {
- port = isSSL ? 443 : 80;
- }
- this.xd = opts.hostname != global.location.hostname ||
- port != opts.port;
- this.xs = opts.secure != isSSL;
- } else {
- this.extraHeaders = opts.extraHeaders;
- }
- }
- /**
- * Inherits from Polling.
- */
- inherit(XHR, Polling);
- /**
- * XHR supports binary
- */
- XHR.prototype.supportsBinary = true;
- /**
- * Creates a request.
- *
- * @param {String} method
- * @api private
- */
- XHR.prototype.request = function(opts){
- opts = opts || {};
- opts.uri = this.uri();
- opts.xd = this.xd;
- opts.xs = this.xs;
- opts.agent = this.agent || false;
- opts.supportsBinary = this.supportsBinary;
- opts.enablesXDR = this.enablesXDR;
- // SSL options for Node.js client
- opts.pfx = this.pfx;
- opts.key = this.key;
- opts.passphrase = this.passphrase;
- opts.cert = this.cert;
- opts.ca = this.ca;
- opts.ciphers = this.ciphers;
- opts.rejectUnauthorized = this.rejectUnauthorized;
- // other options for Node.js client
- opts.extraHeaders = this.extraHeaders;
- return new Request(opts);
- };
- /**
- * Sends data.
- *
- * @param {String} data to send.
- * @param {Function} called upon flush.
- * @api private
- */
- XHR.prototype.doWrite = function(data, fn){
- var isBinary = typeof data !== 'string' && data !== undefined;
- var req = this.request({ method: 'POST', data: data, isBinary: isBinary });
- var self = this;
- req.on('success', fn);
- req.on('error', function(err){
- self.onError('xhr post error', err);
- });
- this.sendXhr = req;
- };
- /**
- * Starts a poll cycle.
- *
- * @api private
- */
- XHR.prototype.doPoll = function(){
- debug('xhr poll');
- var req = this.request();
- var self = this;
- req.on('data', function(data){
- self.onData(data);
- });
- req.on('error', function(err){
- self.onError('xhr poll error', err);
- });
- this.pollXhr = req;
- };
- /**
- * Request constructor
- *
- * @param {Object} options
- * @api public
- */
- function Request(opts){
- this.method = opts.method || 'GET';
- this.uri = opts.uri;
- this.xd = !!opts.xd;
- this.xs = !!opts.xs;
- this.async = false !== opts.async;
- this.data = undefined != opts.data ? opts.data : null;
- this.agent = opts.agent;
- this.isBinary = opts.isBinary;
- this.supportsBinary = opts.supportsBinary;
- this.enablesXDR = opts.enablesXDR;
- // SSL options for Node.js client
- this.pfx = opts.pfx;
- this.key = opts.key;
- this.passphrase = opts.passphrase;
- this.cert = opts.cert;
- this.ca = opts.ca;
- this.ciphers = opts.ciphers;
- this.rejectUnauthorized = opts.rejectUnauthorized;
- // other options for Node.js client
- this.extraHeaders = opts.extraHeaders;
- this.create();
- }
- /**
- * Mix in `Emitter`.
- */
- Emitter(Request.prototype);
- /**
- * Creates the XHR object and sends the request.
- *
- * @api private
- */
- Request.prototype.create = function(){
- var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };
- // SSL options for Node.js client
- opts.pfx = this.pfx;
- opts.key = this.key;
- opts.passphrase = this.passphrase;
- opts.cert = this.cert;
- opts.ca = this.ca;
- opts.ciphers = this.ciphers;
- opts.rejectUnauthorized = this.rejectUnauthorized;
- var xhr = this.xhr = new XMLHttpRequest(opts);
- var self = this;
- try {
- debug('xhr open %s: %s', this.method, this.uri);
- xhr.open(this.method, this.uri, this.async);
- try {
- if (this.extraHeaders) {
- xhr.setDisableHeaderCheck(true);
- for (var i in this.extraHeaders) {
- if (this.extraHeaders.hasOwnProperty(i)) {
- xhr.setRequestHeader(i, this.extraHeaders[i]);
- }
- }
- }
- } catch (e) {}
- if (this.supportsBinary) {
- // This has to be done after open because Firefox is stupid
- // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension
- xhr.responseType = 'arraybuffer';
- }
- if ('POST' == this.method) {
- try {
- if (this.isBinary) {
- xhr.setRequestHeader('Content-type', 'application/octet-stream');
- } else {
- xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
- }
- } catch (e) {}
- }
- // ie6 check
- if ('withCredentials' in xhr) {
- xhr.withCredentials = true;
- }
- if (this.hasXDR()) {
- xhr.onload = function(){
- self.onLoad();
- };
- xhr.onerror = function(){
- self.onError(xhr.responseText);
- };
- } else {
- xhr.onreadystatechange = function(){
- if (4 != xhr.readyState) return;
- if (200 == xhr.status || 1223 == xhr.status) {
- self.onLoad();
- } else {
- // make sure the `error` event handler that's user-set
- // does not throw in the same tick and gets caught here
- setTimeout(function(){
- self.onError(xhr.status);
- }, 0);
- }
- };
- }
- debug('xhr data %s', this.data);
- xhr.send(this.data);
- } catch (e) {
- // Need to defer since .create() is called directly fhrom the constructor
- // and thus the 'error' event can only be only bound *after* this exception
- // occurs. Therefore, also, we cannot throw here at all.
- setTimeout(function() {
- self.onError(e);
- }, 0);
- return;
- }
- if (global.document) {
- this.index = Request.requestsCount++;
- Request.requests[this.index] = this;
- }
- };
- /**
- * Called upon successful response.
- *
- * @api private
- */
- Request.prototype.onSuccess = function(){
- this.emit('success');
- this.cleanup();
- };
- /**
- * Called if we have data.
- *
- * @api private
- */
- Request.prototype.onData = function(data){
- this.emit('data', data);
- this.onSuccess();
- };
- /**
- * Called upon error.
- *
- * @api private
- */
- Request.prototype.onError = function(err){
- this.emit('error', err);
- this.cleanup(true);
- };
- /**
- * Cleans up house.
- *
- * @api private
- */
- Request.prototype.cleanup = function(fromError){
- if ('undefined' == typeof this.xhr || null === this.xhr) {
- return;
- }
- // xmlhttprequest
- if (this.hasXDR()) {
- this.xhr.onload = this.xhr.onerror = empty;
- } else {
- this.xhr.onreadystatechange = empty;
- }
- if (fromError) {
- try {
- this.xhr.abort();
- } catch(e) {}
- }
- if (global.document) {
- delete Request.requests[this.index];
- }
- this.xhr = null;
- };
- /**
- * Called upon load.
- *
- * @api private
- */
- Request.prototype.onLoad = function(){
- var data;
- try {
- var contentType;
- try {
- contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0];
- } catch (e) {}
- if (contentType === 'application/octet-stream') {
- data = this.xhr.response;
- } else {
- if (!this.supportsBinary) {
- data = this.xhr.responseText;
- } else {
- try {
- data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));
- } catch (e) {
- var ui8Arr = new Uint8Array(this.xhr.response);
- var dataArray = [];
- for (var idx = 0, length = ui8Arr.length; idx < length; idx++) {
- dataArray.push(ui8Arr[idx]);
- }
- data = String.fromCharCode.apply(null, dataArray);
- }
- }
- }
- } catch (e) {
- this.onError(e);
- }
- if (null != data) {
- this.onData(data);
- }
- };
- /**
- * Check if it has XDomainRequest.
- *
- * @api private
- */
- Request.prototype.hasXDR = function(){
- return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;
- };
- /**
- * Aborts the request.
- *
- * @api public
- */
- Request.prototype.abort = function(){
- this.cleanup();
- };
- /**
- * Aborts pending requests when unloading the window. This is needed to prevent
- * memory leaks (e.g. when using IE) and to ensure that no spurious error is
- * emitted.
- */
- if (global.document) {
- Request.requestsCount = 0;
- Request.requests = {};
- if (global.attachEvent) {
- global.attachEvent('onunload', unloadHandler);
- } else if (global.addEventListener) {
- // global.addEventListener('beforeunload', unloadHandler, false);
- }
- }
- function unloadHandler() {
- for (var i in Request.requests) {
- if (Request.requests.hasOwnProperty(i)) {
- Request.requests[i].abort();
- }
- }
- }
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"./polling":23,"component-emitter":26,"component-inherit":13,"debug":14,"xmlhttprequest-ssl":25}],23:[function(_dereq_,module,exports){
- /**
- * Module dependencies.
- */
- var Transport = _dereq_('../transport');
- var parseqs = _dereq_('parseqs');
- var parser = _dereq_('engine.io-parser');
- var inherit = _dereq_('component-inherit');
- var yeast = _dereq_('yeast');
- var debug = _dereq_('debug')('engine.io-client:polling');
- /**
- * Module exports.
- */
- module.exports = Polling;
- /**
- * Is XHR2 supported?
- */
- var hasXHR2 = (function() {
- var XMLHttpRequest = _dereq_('xmlhttprequest-ssl');
- var xhr = new XMLHttpRequest({ xdomain: false });
- return null != xhr.responseType;
- })();
- /**
- * Polling interface.
- *
- * @param {Object} opts
- * @api private
- */
- function Polling(opts){
- var forceBase64 = (opts && opts.forceBase64);
- if (!hasXHR2 || forceBase64) {
- this.supportsBinary = false;
- }
- Transport.call(this, opts);
- }
- /**
- * Inherits from Transport.
- */
- inherit(Polling, Transport);
- /**
- * Transport name.
- */
- Polling.prototype.name = 'polling';
- /**
- * Opens the socket (triggers polling). We write a PING message to determine
- * when the transport is open.
- *
- * @api private
- */
- Polling.prototype.doOpen = function(){
- this.poll();
- };
- /**
- * Pauses polling.
- *
- * @param {Function} callback upon buffers are flushed and transport is paused
- * @api private
- */
- Polling.prototype.pause = function(onPause){
- var pending = 0;
- var self = this;
- this.readyState = 'pausing';
- function pause(){
- debug('paused');
- self.readyState = 'paused';
- onPause();
- }
- if (this.polling || !this.writable) {
- var total = 0;
- if (this.polling) {
- debug('we are currently polling - waiting to pause');
- total++;
- this.once('pollComplete', function(){
- debug('pre-pause polling complete');
- --total || pause();
- });
- }
- if (!this.writable) {
- debug('we are currently writing - waiting to pause');
- total++;
- this.once('drain', function(){
- debug('pre-pause writing complete');
- --total || pause();
- });
- }
- } else {
- pause();
- }
- };
- /**
- * Starts polling cycle.
- *
- * @api public
- */
- Polling.prototype.poll = function(){
- debug('polling');
- this.polling = true;
- this.doPoll();
- this.emit('poll');
- };
- /**
- * Overloads onData to detect payloads.
- *
- * @api private
- */
- Polling.prototype.onData = function(data){
- var self = this;
- debug('polling got data %s', data);
- var callback = function(packet, index, total) {
- // if its the first message we consider the transport open
- if ('opening' == self.readyState) {
- self.onOpen();
- }
- // if its a close packet, we close the ongoing requests
- if ('close' == packet.type) {
- self.onClose();
- return false;
- }
- // otherwise bypass onData and handle the message
- self.onPacket(packet);
- };
- // decode payload
- parser.decodePayload(data, this.socket.binaryType, callback);
- // if an event did not trigger closing
- if ('closed' != this.readyState) {
- // if we got data we're not polling
- this.polling = false;
- this.emit('pollComplete');
- if ('open' == this.readyState) {
- this.poll();
- } else {
- debug('ignoring poll - transport state "%s"', this.readyState);
- }
- }
- };
- /**
- * For polling, send a close packet.
- *
- * @api private
- */
- Polling.prototype.doClose = function(){
- var self = this;
- function close(){
- debug('writing close packet');
- self.write([{ type: 'close' }]);
- }
- if ('open' == this.readyState) {
- debug('transport open - closing');
- close();
- } else {
- // in case we're trying to close while
- // handshaking is in progress (GH-164)
- debug('transport not open - deferring close');
- this.once('open', close);
- }
- };
- /**
- * Writes a packets payload.
- *
- * @param {Array} data packets
- * @param {Function} drain callback
- * @api private
- */
- Polling.prototype.write = function(packets){
- var self = this;
- this.writable = false;
- var callbackfn = function() {
- self.writable = true;
- self.emit('drain');
- };
- var self = this;
- parser.encodePayload(packets, this.supportsBinary, function(data) {
- self.doWrite(data, callbackfn);
- });
- };
- /**
- * Generates uri for connection.
- *
- * @api private
- */
- Polling.prototype.uri = function(){
- var query = this.query || {};
- var schema = this.secure ? 'https' : 'http';
- var port = '';
- // cache busting is forced
- if (false !== this.timestampRequests) {
- query[this.timestampParam] = yeast();
- }
- if (!this.supportsBinary && !query.sid) {
- query.b64 = 1;
- }
- query = parseqs.encode(query);
- // avoid port if default for schema
- if (this.port && (('https' == schema && this.port != 443) ||
- ('http' == schema && this.port != 80))) {
- port = ':' + this.port;
- }
- // prepend ? to query
- if (query.length) {
- query = '?' + query;
- }
- var ipv6 = this.hostname.indexOf(':') !== -1;
- return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;
- };
- },{"../transport":19,"component-inherit":13,"debug":14,"engine.io-parser":27,"parseqs":37,"xmlhttprequest-ssl":25,"yeast":45}],24:[function(_dereq_,module,exports){
- (function (global){
- /**
- * Module dependencies.
- */
- var Transport = _dereq_('../transport');
- var parser = _dereq_('engine.io-parser');
- var parseqs = _dereq_('parseqs');
- var inherit = _dereq_('component-inherit');
- var yeast = _dereq_('yeast');
- var debug = _dereq_('debug')('engine.io-client:websocket');
- var BrowserWebSocket = global.WebSocket || global.MozWebSocket;
- /**
- * Get either the `WebSocket` or `MozWebSocket` globals
- * in the browser or try to resolve WebSocket-compatible
- * interface exposed by `ws` for Node-like environment.
- */
- var WebSocket = BrowserWebSocket;
- if (!WebSocket && typeof window === 'undefined') {
- try {
- WebSocket = _dereq_('ws');
- } catch (e) { }
- }
- /**
- * Module exports.
- */
- module.exports = WS;
- /**
- * WebSocket transport constructor.
- *
- * @api {Object} connection options
- * @api public
- */
- function WS(opts){
- var forceBase64 = (opts && opts.forceBase64);
- if (forceBase64) {
- this.supportsBinary = false;
- }
- this.perMessageDeflate = opts.perMessageDeflate;
- Transport.call(this, opts);
- }
- /**
- * Inherits from Transport.
- */
- inherit(WS, Transport);
- /**
- * Transport name.
- *
- * @api public
- */
- WS.prototype.name = 'websocket';
- /*
- * WebSockets support binary
- */
- WS.prototype.supportsBinary = true;
- /**
- * Opens socket.
- *
- * @api private
- */
- WS.prototype.doOpen = function(){
- if (!this.check()) {
- // let probe timeout
- return;
- }
- var self = this;
- var uri = this.uri();
- var protocols = void(0);
- var opts = {
- agent: this.agent,
- perMessageDeflate: this.perMessageDeflate
- };
- // SSL options for Node.js client
- opts.pfx = this.pfx;
- opts.key = this.key;
- opts.passphrase = this.passphrase;
- opts.cert = this.cert;
- opts.ca = this.ca;
- opts.ciphers = this.ciphers;
- opts.rejectUnauthorized = this.rejectUnauthorized;
- if (this.extraHeaders) {
- opts.headers = this.extraHeaders;
- }
- this.ws = BrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);
- if (this.ws.binaryType === undefined) {
- this.supportsBinary = false;
- }
- if (this.ws.supports && this.ws.supports.binary) {
- this.supportsBinary = true;
- this.ws.binaryType = 'buffer';
- } else {
- this.ws.binaryType = 'arraybuffer';
- }
- this.addEventListeners();
- };
- /**
- * Adds event listeners to the socket
- *
- * @api private
- */
- WS.prototype.addEventListeners = function(){
- var self = this;
- this.ws.onopen = function(){
- self.onOpen();
- };
- this.ws.onclose = function(){
- self.onClose();
- };
- this.ws.onmessage = function(ev){
- self.onData(ev.data);
- };
- this.ws.onerror = function(e){
- self.onError('websocket error', e);
- };
- };
- /**
- * Override `onData` to use a timer on iOS.
- * See: https://gist.github.com/mloughran/2052006
- *
- * @api private
- */
- if ('undefined' != typeof navigator
- && /iPad|iPhone|iPod/i.test(navigator.userAgent)) {
- WS.prototype.onData = function(data){
- var self = this;
- setTimeout(function(){
- Transport.prototype.onData.call(self, data);
- }, 0);
- };
- }
- /**
- * Writes data to socket.
- *
- * @param {Array} array of packets.
- * @api private
- */
- WS.prototype.write = function(packets){
- var self = this;
- this.writable = false;
- // encodePacket efficient as it uses WS framing
- // no need for encodePayload
- var total = packets.length;
- for (var i = 0, l = total; i < l; i++) {
- (function(packet) {
- parser.encodePacket(packet, self.supportsBinary, function(data) {
- if (!BrowserWebSocket) {
- // always create a new object (GH-437)
- var opts = {};
- if (packet.options) {
- opts.compress = packet.options.compress;
- }
- if (self.perMessageDeflate) {
- var len = 'string' == typeof data ? global.Buffer.byteLength(data) : data.length;
- if (len < self.perMessageDeflate.threshold) {
- opts.compress = false;
- }
- }
- }
- //Sometimes the websocket has already been closed but the browser didn't
- //have a chance of informing us about it yet, in that case send will
- //throw an error
- try {
- if (BrowserWebSocket) {
- // TypeError is thrown when passing the second argument on Safari
- self.ws.send(data);
- } else {
- self.ws.send(data, opts);
- }
- } catch (e){
- debug('websocket closed before onclose event');
- }
- --total || done();
- });
- })(packets[i]);
- }
- function done(){
- self.emit('flush');
- // fake drain
- // defer to next tick to allow Socket to clear writeBuffer
- setTimeout(function(){
- self.writable = true;
- self.emit('drain');
- }, 0);
- }
- };
- /**
- * Called upon close
- *
- * @api private
- */
- WS.prototype.onClose = function(){
- Transport.prototype.onClose.call(this);
- };
- /**
- * Closes socket.
- *
- * @api private
- */
- WS.prototype.doClose = function(){
- if (typeof this.ws !== 'undefined') {
- this.ws.close();
- }
- };
- /**
- * Generates uri for connection.
- *
- * @api private
- */
- WS.prototype.uri = function(){
- var query = this.query || {};
- var schema = this.secure ? 'wss' : 'ws';
- var port = '';
- // avoid port if default for schema
- if (this.port && (('wss' == schema && this.port != 443)
- || ('ws' == schema && this.port != 80))) {
- port = ':' + this.port;
- }
- // append timestamp to URI
- if (this.timestampRequests) {
- query[this.timestampParam] = yeast();
- }
- // communicate binary support capabilities
- if (!this.supportsBinary) {
- query.b64 = 1;
- }
- query = parseqs.encode(query);
- // prepend ? to query
- if (query.length) {
- query = '?' + query;
- }
- var ipv6 = this.hostname.indexOf(':') !== -1;
- return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;
- };
- /**
- * Feature detection for WebSocket.
- *
- * @return {Boolean} whether this transport is available.
- * @api public
- */
- WS.prototype.check = function(){
- return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);
- };
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"../transport":19,"component-inherit":13,"debug":14,"engine.io-parser":27,"parseqs":37,"ws":undefined,"yeast":45}],25:[function(_dereq_,module,exports){
- // browser shim for xmlhttprequest module
- var hasCORS = _dereq_('has-cors');
- module.exports = function(opts) {
- var xdomain = opts.xdomain;
- // scheme must be same when usign XDomainRequest
- // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
- var xscheme = opts.xscheme;
- // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
- // https://github.com/Automattic/engine.io-client/pull/217
- var enablesXDR = opts.enablesXDR;
- // XMLHttpRequest can be disabled on IE
- try {
- if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {
- return new XMLHttpRequest();
- }
- } catch (e) { }
- // Use XDomainRequest for IE8 if enablesXDR is true
- // because loading bar keeps flashing when using jsonp-polling
- // https://github.com/yujiosaka/socke.io-ie8-loading-example
- try {
- if ('undefined' != typeof XDomainRequest && !xscheme && enablesXDR) {
- return new XDomainRequest();
- }
- } catch (e) { }
- if (!xdomain) {
- try {
- return new ActiveXObject('Microsoft.XMLHTTP');
- } catch(e) { }
- }
- }
- },{"has-cors":31}],26:[function(_dereq_,module,exports){
- /**
- * Expose `Emitter`.
- */
- module.exports = Emitter;
- /**
- * Initialize a new `Emitter`.
- *
- * @api public
- */
- function Emitter(obj) {
- if (obj) return mixin(obj);
- };
- /**
- * Mixin the emitter properties.
- *
- * @param {Object} obj
- * @return {Object}
- * @api private
- */
- function mixin(obj) {
- for (var key in Emitter.prototype) {
- obj[key] = Emitter.prototype[key];
- }
- return obj;
- }
- /**
- * Listen on the given `event` with `fn`.
- *
- * @param {String} event
- * @param {Function} fn
- * @return {Emitter}
- * @api public
- */
- Emitter.prototype.on =
- Emitter.prototype.addEventListener = function(event, fn){
- this._callbacks = this._callbacks || {};
- (this._callbacks[event] = this._callbacks[event] || [])
- .push(fn);
- return this;
- };
- /**
- * Adds an `event` listener that will be invoked a single
- * time then automatically removed.
- *
- * @param {String} event
- * @param {Function} fn
- * @return {Emitter}
- * @api public
- */
- Emitter.prototype.once = function(event, fn){
- var self = this;
- this._callbacks = this._callbacks || {};
- function on() {
- self.off(event, on);
- fn.apply(this, arguments);
- }
- on.fn = fn;
- this.on(event, on);
- return this;
- };
- /**
- * Remove the given callback for `event` or all
- * registered callbacks.
- *
- * @param {String} event
- * @param {Function} fn
- * @return {Emitter}
- * @api public
- */
- Emitter.prototype.off =
- Emitter.prototype.removeListener =
- Emitter.prototype.removeAllListeners =
- Emitter.prototype.removeEventListener = function(event, fn){
- this._callbacks = this._callbacks || {};
- // all
- if (0 == arguments.length) {
- this._callbacks = {};
- return this;
- }
- // specific event
- var callbacks = this._callbacks[event];
- if (!callbacks) return this;
- // remove all handlers
- if (1 == arguments.length) {
- delete this._callbacks[event];
- return this;
- }
- // remove specific handler
- var cb;
- for (var i = 0; i < callbacks.length; i++) {
- cb = callbacks[i];
- if (cb === fn || cb.fn === fn) {
- callbacks.splice(i, 1);
- break;
- }
- }
- return this;
- };
- /**
- * Emit `event` with the given args.
- *
- * @param {String} event
- * @param {Mixed} ...
- * @return {Emitter}
- */
- Emitter.prototype.emit = function(event){
- this._callbacks = this._callbacks || {};
- var args = [].slice.call(arguments, 1)
- , callbacks = this._callbacks[event];
- if (callbacks) {
- callbacks = callbacks.slice(0);
- for (var i = 0, len = callbacks.length; i < len; ++i) {
- callbacks[i].apply(this, args);
- }
- }
- return this;
- };
- /**
- * Return array of callbacks for `event`.
- *
- * @param {String} event
- * @return {Array}
- * @api public
- */
- Emitter.prototype.listeners = function(event){
- this._callbacks = this._callbacks || {};
- return this._callbacks[event] || [];
- };
- /**
- * Check if this emitter has `event` handlers.
- *
- * @param {String} event
- * @return {Boolean}
- * @api public
- */
- Emitter.prototype.hasListeners = function(event){
- return !! this.listeners(event).length;
- };
- },{}],27:[function(_dereq_,module,exports){
- (function (global){
- /**
- * Module dependencies.
- */
- var keys = _dereq_('./keys');
- var hasBinary = _dereq_('has-binary');
- var sliceBuffer = _dereq_('arraybuffer.slice');
- var base64encoder = _dereq_('base64-arraybuffer');
- var after = _dereq_('after');
- var utf8 = _dereq_('utf8');
- /**
- * Check if we are running an android browser. That requires us to use
- * ArrayBuffer with polling transports...
- *
- * http://ghinda.net/jpeg-blob-ajax-android/
- */
- var isAndroid = navigator.userAgent.match(/Android/i);
- /**
- * Check if we are running in PhantomJS.
- * Uploading a Blob with PhantomJS does not work correctly, as reported here:
- * https://github.com/ariya/phantomjs/issues/11395
- * @type boolean
- */
- var isPhantomJS = /PhantomJS/i.test(navigator.userAgent);
- /**
- * When true, avoids using Blobs to encode payloads.
- * @type boolean
- */
- var dontSendBlobs = isAndroid || isPhantomJS;
- /**
- * Current protocol version.
- */
- exports.protocol = 3;
- /**
- * Packet types.
- */
- var packets = exports.packets = {
- open: 0 // non-ws
- , close: 1 // non-ws
- , ping: 2
- , pong: 3
- , message: 4
- , upgrade: 5
- , noop: 6
- };
- var packetslist = keys(packets);
- /**
- * Premade error packet.
- */
- var err = { type: 'error', data: 'parser error' };
- /**
- * Create a blob api even for blob builder when vendor prefixes exist
- */
- var Blob = _dereq_('blob');
- /**
- * Encodes a packet.
- *
- * <packet type id> [ <data> ]
- *
- * Example:
- *
- * 5hello world
- * 3
- * 4
- *
- * Binary is encoded in an identical principle
- *
- * @api private
- */
- exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {
- if ('function' == typeof supportsBinary) {
- callback = supportsBinary;
- supportsBinary = false;
- }
- if ('function' == typeof utf8encode) {
- callback = utf8encode;
- utf8encode = null;
- }
- var data = (packet.data === undefined)
- ? undefined
- : packet.data.buffer || packet.data;
- if (global.ArrayBuffer && data instanceof ArrayBuffer) {
- return encodeArrayBuffer(packet, supportsBinary, callback);
- } else if (Blob && data instanceof global.Blob) {
- return encodeBlob(packet, supportsBinary, callback);
- }
- // might be an object with { base64: true, data: dataAsBase64String }
- if (data && data.base64) {
- return encodeBase64Object(packet, callback);
- }
- // Sending data as a utf-8 string
- var encoded = packets[packet.type];
- // data fragment is optional
- if (undefined !== packet.data) {
- encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data);
- }
- return callback('' + encoded);
- };
- function encodeBase64Object(packet, callback) {
- // packet data is an object { base64: true, data: dataAsBase64String }
- var message = 'b' + exports.packets[packet.type] + packet.data.data;
- return callback(message);
- }
- /**
- * Encode packet helpers for binary types
- */
- function encodeArrayBuffer(packet, supportsBinary, callback) {
- if (!supportsBinary) {
- return exports.encodeBase64Packet(packet, callback);
- }
- var data = packet.data;
- var contentArray = new Uint8Array(data);
- var resultBuffer = new Uint8Array(1 + data.byteLength);
- resultBuffer[0] = packets[packet.type];
- for (var i = 0; i < contentArray.length; i++) {
- resultBuffer[i+1] = contentArray[i];
- }
- return callback(resultBuffer.buffer);
- }
- function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {
- if (!supportsBinary) {
- return exports.encodeBase64Packet(packet, callback);
- }
- var fr = new FileReader();
- fr.onload = function() {
- packet.data = fr.result;
- exports.encodePacket(packet, supportsBinary, true, callback);
- };
- return fr.readAsArrayBuffer(packet.data);
- }
- function encodeBlob(packet, supportsBinary, callback) {
- if (!supportsBinary) {
- return exports.encodeBase64Packet(packet, callback);
- }
- if (dontSendBlobs) {
- return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);
- }
- var length = new Uint8Array(1);
- length[0] = packets[packet.type];
- var blob = new Blob([length.buffer, packet.data]);
- return callback(blob);
- }
- /**
- * Encodes a packet with binary data in a base64 string
- *
- * @param {Object} packet, has `type` and `data`
- * @return {String} base64 encoded message
- */
- exports.encodeBase64Packet = function(packet, callback) {
- var message = 'b' + exports.packets[packet.type];
- if (Blob && packet.data instanceof global.Blob) {
- var fr = new FileReader();
- fr.onload = function() {
- var b64 = fr.result.split(',')[1];
- callback(message + b64);
- };
- return fr.readAsDataURL(packet.data);
- }
- var b64data;
- try {
- b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));
- } catch (e) {
- // iPhone Safari doesn't let you apply with typed arrays
- var typed = new Uint8Array(packet.data);
- var basic = new Array(typed.length);
- for (var i = 0; i < typed.length; i++) {
- basic[i] = typed[i];
- }
- b64data = String.fromCharCode.apply(null, basic);
- }
- message += global.btoa(b64data);
- return callback(message);
- };
- /**
- * Decodes a packet. Changes format to Blob if requested.
- *
- * @return {Object} with `type` and `data` (if any)
- * @api private
- */
- exports.decodePacket = function (data, binaryType, utf8decode) {
- // String data
- if (typeof data == 'string' || data === undefined) {
- if (data.charAt(0) == 'b') {
- return exports.decodeBase64Packet(data.substr(1), binaryType);
- }
- if (utf8decode) {
- try {
- data = utf8.decode(data);
- } catch (e) {
- return err;
- }
- }
- var type = data.charAt(0);
- if (Number(type) != type || !packetslist[type]) {
- return err;
- }
- if (data.length > 1) {
- return { type: packetslist[type], data: data.substring(1) };
- } else {
- return { type: packetslist[type] };
- }
- }
- var asArray = new Uint8Array(data);
- var type = asArray[0];
- var rest = sliceBuffer(data, 1);
- if (Blob && binaryType === 'blob') {
- rest = new Blob([rest]);
- }
- return { type: packetslist[type], data: rest };
- };
- /**
- * Decodes a packet encoded in a base64 string
- *
- * @param {String} base64 encoded message
- * @return {Object} with `type` and `data` (if any)
- */
- exports.decodeBase64Packet = function(msg, binaryType) {
- var type = packetslist[msg.charAt(0)];
- if (!global.ArrayBuffer) {
- return { type: type, data: { base64: true, data: msg.substr(1) } };
- }
- var data = base64encoder.decode(msg.substr(1));
- if (binaryType === 'blob' && Blob) {
- data = new Blob([data]);
- }
- return { type: type, data: data };
- };
- /**
- * Encodes multiple messages (payload).
- *
- * <length>:data
- *
- * Example:
- *
- * 11:hello world2:hi
- *
- * If any contents are binary, they will be encoded as base64 strings. Base64
- * encoded strings are marked with a b before the length specifier
- *
- * @param {Array} packets
- * @api private
- */
- exports.encodePayload = function (packets, supportsBinary, callback) {
- if (typeof supportsBinary == 'function') {
- callback = supportsBinary;
- supportsBinary = null;
- }
- var isBinary = hasBinary(packets);
- if (supportsBinary && isBinary) {
- if (Blob && !dontSendBlobs) {
- return exports.encodePayloadAsBlob(packets, callback);
- }
- return exports.encodePayloadAsArrayBuffer(packets, callback);
- }
- if (!packets.length) {
- return callback('0:');
- }
- function setLengthHeader(message) {
- return message.length + ':' + message;
- }
- function encodeOne(packet, doneCallback) {
- exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) {
- doneCallback(null, setLengthHeader(message));
- });
- }
- map(packets, encodeOne, function(err, results) {
- return callback(results.join(''));
- });
- };
- /**
- * Async array map using after
- */
- function map(ary, each, done) {
- var result = new Array(ary.length);
- var next = after(ary.length, done);
- var eachWithIndex = function(i, el, cb) {
- each(el, function(error, msg) {
- result[i] = msg;
- cb(error, result);
- });
- };
- for (var i = 0; i < ary.length; i++) {
- eachWithIndex(i, ary[i], next);
- }
- }
- /*
- * Decodes data when a payload is maybe expected. Possible binary contents are
- * decoded from their base64 representation
- *
- * @param {String} data, callback method
- * @api public
- */
- exports.decodePayload = function (data, binaryType, callback) {
- if (typeof data != 'string') {
- return exports.decodePayloadAsBinary(data, binaryType, callback);
- }
- if (typeof binaryType === 'function') {
- callback = binaryType;
- binaryType = null;
- }
- var packet;
- if (data == '') {
- // parser error - ignoring payload
- return callback(err, 0, 1);
- }
- var length = ''
- , n, msg;
- for (var i = 0, l = data.length; i < l; i++) {
- var chr = data.charAt(i);
- if (':' != chr) {
- length += chr;
- } else {
- if ('' == length || (length != (n = Number(length)))) {
- // parser error - ignoring payload
- return callback(err, 0, 1);
- }
- msg = data.substr(i + 1, n);
- if (length != msg.length) {
- // parser error - ignoring payload
- return callback(err, 0, 1);
- }
- if (msg.length) {
- packet = exports.decodePacket(msg, binaryType, true);
- if (err.type == packet.type && err.data == packet.data) {
- // parser error in individual packet - ignoring payload
- return callback(err, 0, 1);
- }
- var ret = callback(packet, i + n, l);
- if (false === ret) return;
- }
- // advance cursor
- i += n;
- length = '';
- }
- }
- if (length != '') {
- // parser error - ignoring payload
- return callback(err, 0, 1);
- }
- };
- /**
- * Encodes multiple messages (payload) as binary.
- *
- * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
- * 255><data>
- *
- * Example:
- * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
- *
- * @param {Array} packets
- * @return {ArrayBuffer} encoded payload
- * @api private
- */
- exports.encodePayloadAsArrayBuffer = function(packets, callback) {
- if (!packets.length) {
- return callback(new ArrayBuffer(0));
- }
- function encodeOne(packet, doneCallback) {
- exports.encodePacket(packet, true, true, function(data) {
- return doneCallback(null, data);
- });
- }
- map(packets, encodeOne, function(err, encodedPackets) {
- var totalLength = encodedPackets.reduce(function(acc, p) {
- var len;
- if (typeof p === 'string'){
- len = p.length;
- } else {
- len = p.byteLength;
- }
- return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2
- }, 0);
- var resultArray = new Uint8Array(totalLength);
- var bufferIndex = 0;
- encodedPackets.forEach(function(p) {
- var isString = typeof p === 'string';
- var ab = p;
- if (isString) {
- var view = new Uint8Array(p.length);
- for (var i = 0; i < p.length; i++) {
- view[i] = p.charCodeAt(i);
- }
- ab = view.buffer;
- }
- if (isString) { // not true binary
- resultArray[bufferIndex++] = 0;
- } else { // true binary
- resultArray[bufferIndex++] = 1;
- }
- var lenStr = ab.byteLength.toString();
- for (var i = 0; i < lenStr.length; i++) {
- resultArray[bufferIndex++] = parseInt(lenStr[i]);
- }
- resultArray[bufferIndex++] = 255;
- var view = new Uint8Array(ab);
- for (var i = 0; i < view.length; i++) {
- resultArray[bufferIndex++] = view[i];
- }
- });
- return callback(resultArray.buffer);
- });
- };
- /**
- * Encode as Blob
- */
- exports.encodePayloadAsBlob = function(packets, callback) {
- function encodeOne(packet, doneCallback) {
- exports.encodePacket(packet, true, true, function(encoded) {
- var binaryIdentifier = new Uint8Array(1);
- binaryIdentifier[0] = 1;
- if (typeof encoded === 'string') {
- var view = new Uint8Array(encoded.length);
- for (var i = 0; i < encoded.length; i++) {
- view[i] = encoded.charCodeAt(i);
- }
- encoded = view.buffer;
- binaryIdentifier[0] = 0;
- }
- var len = (encoded instanceof ArrayBuffer)
- ? encoded.byteLength
- : encoded.size;
- var lenStr = len.toString();
- var lengthAry = new Uint8Array(lenStr.length + 1);
- for (var i = 0; i < lenStr.length; i++) {
- lengthAry[i] = parseInt(lenStr[i]);
- }
- lengthAry[lenStr.length] = 255;
- if (Blob) {
- var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);
- doneCallback(null, blob);
- }
- });
- }
- map(packets, encodeOne, function(err, results) {
- return callback(new Blob(results));
- });
- };
- /*
- * Decodes data when a payload is maybe expected. Strings are decoded by
- * interpreting each byte as a key code for entries marked to start with 0. See
- * description of encodePayloadAsBinary
- *
- * @param {ArrayBuffer} data, callback method
- * @api public
- */
- exports.decodePayloadAsBinary = function (data, binaryType, callback) {
- if (typeof binaryType === 'function') {
- callback = binaryType;
- binaryType = null;
- }
- var bufferTail = data;
- var buffers = [];
- var numberTooLong = false;
- while (bufferTail.byteLength > 0) {
- var tailArray = new Uint8Array(bufferTail);
- var isString = tailArray[0] === 0;
- var msgLength = '';
- for (var i = 1; ; i++) {
- if (tailArray[i] == 255) break;
- if (msgLength.length > 310) {
- numberTooLong = true;
- break;
- }
- msgLength += tailArray[i];
- }
- if(numberTooLong) return callback(err, 0, 1);
- bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);
- msgLength = parseInt(msgLength);
- var msg = sliceBuffer(bufferTail, 0, msgLength);
- if (isString) {
- try {
- msg = String.fromCharCode.apply(null, new Uint8Array(msg));
- } catch (e) {
- // iPhone Safari doesn't let you apply to typed arrays
- var typed = new Uint8Array(msg);
- msg = '';
- for (var i = 0; i < typed.length; i++) {
- msg += String.fromCharCode(typed[i]);
- }
- }
- }
- buffers.push(msg);
- bufferTail = sliceBuffer(bufferTail, msgLength);
- }
- var total = buffers.length;
- buffers.forEach(function(buffer, i) {
- callback(exports.decodePacket(buffer, binaryType, true), i, total);
- });
- };
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"./keys":28,"after":6,"arraybuffer.slice":7,"base64-arraybuffer":9,"blob":10,"has-binary":29,"utf8":44}],28:[function(_dereq_,module,exports){
- /**
- * Gets the keys for an object.
- *
- * @return {Array} keys
- * @api private
- */
- module.exports = Object.keys || function keys (obj){
- var arr = [];
- var has = Object.prototype.hasOwnProperty;
- for (var i in obj) {
- if (has.call(obj, i)) {
- arr.push(i);
- }
- }
- return arr;
- };
- },{}],29:[function(_dereq_,module,exports){
- (function (global){
- /*
- * Module requirements.
- */
- var isArray = _dereq_('isarray');
- /**
- * Module exports.
- */
- module.exports = hasBinary;
- /**
- * Checks for binary data.
- *
- * Right now only Buffer and ArrayBuffer are supported..
- *
- * @param {Object} anything
- * @api public
- */
- function hasBinary(data) {
- function _hasBinary(obj) {
- if (!obj) return false;
- if ( (global.Buffer && global.Buffer.isBuffer(obj)) ||
- (global.ArrayBuffer && obj instanceof ArrayBuffer) ||
- (global.Blob && obj instanceof Blob) ||
- (global.File && obj instanceof File)
- ) {
- return true;
- }
- if (isArray(obj)) {
- for (var i = 0; i < obj.length; i++) {
- if (_hasBinary(obj[i])) {
- return true;
- }
- }
- } else if (obj && 'object' == typeof obj) {
- if (obj.toJSON) {
- obj = obj.toJSON();
- }
- for (var key in obj) {
- if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {
- return true;
- }
- }
- }
- return false;
- }
- return _hasBinary(data);
- }
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"isarray":33}],30:[function(_dereq_,module,exports){
- (function (global){
- /*
- * Module requirements.
- */
- var isArray = _dereq_('isarray');
- /**
- * Module exports.
- */
- module.exports = hasBinary;
- /**
- * Checks for binary data.
- *
- * Right now only Buffer and ArrayBuffer are supported..
- *
- * @param {Object} anything
- * @api public
- */
- function hasBinary(data) {
- function _hasBinary(obj) {
- if (!obj) return false;
- if ( (global.Buffer && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||
- (global.ArrayBuffer && obj instanceof ArrayBuffer) ||
- (global.Blob && obj instanceof Blob) ||
- (global.File && obj instanceof File)
- ) {
- return true;
- }
- if (isArray(obj)) {
- for (var i = 0; i < obj.length; i++) {
- if (_hasBinary(obj[i])) {
- return true;
- }
- }
- } else if (obj && 'object' == typeof obj) {
- // see: https://github.com/Automattic/has-binary/pull/4
- if (obj.toJSON && 'function' == typeof obj.toJSON) {
- obj = obj.toJSON();
- }
- for (var key in obj) {
- if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {
- return true;
- }
- }
- }
- return false;
- }
- return _hasBinary(data);
- }
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"isarray":33}],31:[function(_dereq_,module,exports){
- /**
- * Module exports.
- *
- * Logic borrowed from Modernizr:
- *
- * - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
- */
- try {
- module.exports = typeof XMLHttpRequest !== 'undefined' &&
- 'withCredentials' in new XMLHttpRequest();
- } catch (err) {
- // if XMLHttp support is disabled in IE then it will throw
- // when trying to create
- module.exports = false;
- }
- },{}],32:[function(_dereq_,module,exports){
- var indexOf = [].indexOf;
- module.exports = function(arr, obj){
- if (indexOf) return arr.indexOf(obj);
- for (var i = 0; i < arr.length; ++i) {
- if (arr[i] === obj) return i;
- }
- return -1;
- };
- },{}],33:[function(_dereq_,module,exports){
- module.exports = Array.isArray || function (arr) {
- return Object.prototype.toString.call(arr) == '[object Array]';
- };
- },{}],34:[function(_dereq_,module,exports){
- (function (global){
- /*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */
- ;(function () {
- // Detect the `define` function exposed by asynchronous module loaders. The
- // strict `define` check is necessary for compatibility with `r.js`.
- var isLoader = typeof define === "function" && define.amd;
- // A set of types used to distinguish objects from primitives.
- var objectTypes = {
- "function": true,
- "object": true
- };
- // Detect the `exports` object exposed by CommonJS implementations.
- var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;
- // Use the `global` object exposed by Node (including Browserify via
- // `insert-module-globals`), Narwhal, and Ringo as the default context,
- // and the `window` object in browsers. Rhino exports a `global` function
- // instead.
- var root = objectTypes[typeof window] && window || this,
- freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == "object" && global;
- if (freeGlobal && (freeGlobal["global"] === freeGlobal || freeGlobal["window"] === freeGlobal || freeGlobal["self"] === freeGlobal)) {
- root = freeGlobal;
- }
- // Public: Initializes JSON 3 using the given `context` object, attaching the
- // `stringify` and `parse` functions to the specified `exports` object.
- function runInContext(context, exports) {
- context || (context = root["Object"]());
- exports || (exports = root["Object"]());
- // Native constructor aliases.
- var Number = context["Number"] || root["Number"],
- String = context["String"] || root["String"],
- Object = context["Object"] || root["Object"],
- Date = context["Date"] || root["Date"],
- SyntaxError = context["SyntaxError"] || root["SyntaxError"],
- TypeError = context["TypeError"] || root["TypeError"],
- Math = context["Math"] || root["Math"],
- nativeJSON = context["JSON"] || root["JSON"];
- // Delegate to the native `stringify` and `parse` implementations.
- if (typeof nativeJSON == "object" && nativeJSON) {
- exports.stringify = nativeJSON.stringify;
- exports.parse = nativeJSON.parse;
- }
- // Convenience aliases.
- var objectProto = Object.prototype,
- getClass = objectProto.toString,
- isProperty, forEach, undef;
- // Test the `Date#getUTC*` methods. Based on work by @Yaffle.
- var isExtended = new Date(-3509827334573292);
- try {
- // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical
- // results for certain dates in Opera >= 10.53.
- isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&
- // Safari < 2.0.2 stores the internal millisecond time value correctly,
- // but clips the values returned by the date methods to the range of
- // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).
- isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;
- } catch (exception) {}
- // Internal: Determines whether the native `JSON.stringify` and `parse`
- // implementations are spec-compliant. Based on work by Ken Snyder.
- function has(name) {
- if (has[name] !== undef) {
- // Return cached feature test result.
- return has[name];
- }
- var isSupported;
- if (name == "bug-string-char-index") {
- // IE <= 7 doesn't support accessing string characters using square
- // bracket notation. IE 8 only supports this for primitives.
- isSupported = "a"[0] != "a";
- } else if (name == "json") {
- // Indicates whether both `JSON.stringify` and `JSON.parse` are
- // supported.
- isSupported = has("json-stringify") && has("json-parse");
- } else {
- var value, serialized = '{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}';
- // Test `JSON.stringify`.
- if (name == "json-stringify") {
- var stringify = exports.stringify, stringifySupported = typeof stringify == "function" && isExtended;
- if (stringifySupported) {
- // A test function object with a custom `toJSON` method.
- (value = function () {
- return 1;
- }).toJSON = value;
- try {
- stringifySupported =
- // Firefox 3.1b1 and b2 serialize string, number, and boolean
- // primitives as object literals.
- stringify(0) === "0" &&
- // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object
- // literals.
- stringify(new Number()) === "0" &&
- stringify(new String()) == '""' &&
- // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or
- // does not define a canonical JSON representation (this applies to
- // objects with `toJSON` properties as well, *unless* they are nested
- // within an object or array).
- stringify(getClass) === undef &&
- // IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
- // FF 3.1b3 pass this test.
- stringify(undef) === undef &&
- // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
- // respectively, if the value is omitted entirely.
- stringify() === undef &&
- // FF 3.1b1, 2 throw an error if the given value is not a number,
- // string, array, object, Boolean, or `null` literal. This applies to
- // objects with custom `toJSON` methods as well, unless they are nested
- // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`
- // methods entirely.
- stringify(value) === "1" &&
- stringify([value]) == "[1]" &&
- // Prototype <= 1.6.1 serializes `[undefined]` as `"[]"` instead of
- // `"[null]"`.
- stringify([undef]) == "[null]" &&
- // YUI 3.0.0b1 fails to serialize `null` literals.
- stringify(null) == "null" &&
- // FF 3.1b1, 2 halts serialization if an array contains a function:
- // `[1, true, getClass, 1]` serializes as "[1,true,],". FF 3.1b3
- // elides non-JSON values from objects and arrays, unless they
- // define custom `toJSON` methods.
- stringify([undef, getClass, null]) == "[null,null,null]" &&
- // Simple serialization test. FF 3.1b1 uses Unicode escape sequences
- // where character escape codes are expected (e.g., `\b` => `\u0008`).
- stringify({ "a": [value, true, false, null, "\x00\b\n\f\r\t"] }) == serialized &&
- // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.
- stringify(null, value) === "1" &&
- stringify([1, 2], null, 1) == "[\n 1,\n 2\n]" &&
- // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly
- // serialize extended years.
- stringify(new Date(-8.64e15)) == '"-271821-04-20T00:00:00.000Z"' &&
- // The milliseconds are optional in ES 5, but required in 5.1.
- stringify(new Date(8.64e15)) == '"+275760-09-13T00:00:00.000Z"' &&
- // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative
- // four-digit years instead of six-digit years. Credits: @Yaffle.
- stringify(new Date(-621987552e5)) == '"-000001-01-01T00:00:00.000Z"' &&
- // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond
- // values less than 1000. Credits: @Yaffle.
- stringify(new Date(-1)) == '"1969-12-31T23:59:59.999Z"';
- } catch (exception) {
- stringifySupported = false;
- }
- }
- isSupported = stringifySupported;
- }
- // Test `JSON.parse`.
- if (name == "json-parse") {
- var parse = exports.parse;
- if (typeof parse == "function") {
- try {
- // FF 3.1b1, b2 will throw an exception if a bare literal is provided.
- // Conforming implementations should also coerce the initial argument to
- // a string prior to parsing.
- if (parse("0") === 0 && !parse(false)) {
- // Simple parsing test.
- value = parse(serialized);
- var parseSupported = value["a"].length == 5 && value["a"][0] === 1;
- if (parseSupported) {
- try {
- // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
- parseSupported = !parse('"\t"');
- } catch (exception) {}
- if (parseSupported) {
- try {
- // FF 4.0 and 4.0.1 allow leading `+` signs and leading
- // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow
- // certain octal literals.
- parseSupported = parse("01") !== 1;
- } catch (exception) {}
- }
- if (parseSupported) {
- try {
- // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal
- // points. These environments, along with FF 3.1b1 and 2,
- // also allow trailing commas in JSON objects and arrays.
- parseSupported = parse("1.") !== 1;
- } catch (exception) {}
- }
- }
- }
- } catch (exception) {
- parseSupported = false;
- }
- }
- isSupported = parseSupported;
- }
- }
- return has[name] = !!isSupported;
- }
- if (!has("json")) {
- // Common `[[Class]]` name aliases.
- var functionClass = "[object Function]",
- dateClass = "[object Date]",
- numberClass = "[object Number]",
- stringClass = "[object String]",
- arrayClass = "[object Array]",
- booleanClass = "[object Boolean]";
- // Detect incomplete support for accessing string characters by index.
- var charIndexBuggy = has("bug-string-char-index");
- // Define additional utility methods if the `Date` methods are buggy.
- if (!isExtended) {
- var floor = Math.floor;
- // A mapping between the months of the year and the number of days between
- // January 1st and the first of the respective month.
- var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
- // Internal: Calculates the number of days between the Unix epoch and the
- // first day of the given month.
- var getDay = function (year, month) {
- return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);
- };
- }
- // Internal: Determines if a property is a direct property of the given
- // object. Delegates to the native `Object#hasOwnProperty` method.
- if (!(isProperty = objectProto.hasOwnProperty)) {
- isProperty = function (property) {
- var members = {}, constructor;
- if ((members.__proto__ = null, members.__proto__ = {
- // The *proto* property cannot be set multiple times in recent
- // versions of Firefox and SeaMonkey.
- "toString": 1
- }, members).toString != getClass) {
- // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but
- // supports the mutable *proto* property.
- isProperty = function (property) {
- // Capture and break the object's prototype chain (see section 8.6.2
- // of the ES 5.1 spec). The parenthesized expression prevents an
- // unsafe transformation by the Closure Compiler.
- var original = this.__proto__, result = property in (this.__proto__ = null, this);
- // Restore the original prototype chain.
- this.__proto__ = original;
- return result;
- };
- } else {
- // Capture a reference to the top-level `Object` constructor.
- constructor = members.constructor;
- // Use the `constructor` property to simulate `Object#hasOwnProperty` in
- // other environments.
- isProperty = function (property) {
- var parent = (this.constructor || constructor).prototype;
- return property in this && !(property in parent && this[property] === parent[property]);
- };
- }
- members = null;
- return isProperty.call(this, property);
- };
- }
- // Internal: Normalizes the `for...in` iteration algorithm across
- // environments. Each enumerated key is yielded to a `callback` function.
- forEach = function (object, callback) {
- var size = 0, Properties, members, property;
- // Tests for bugs in the current environment's `for...in` algorithm. The
- // `valueOf` property inherits the non-enumerable flag from
- // `Object.prototype` in older versions of IE, Netscape, and Mozilla.
- (Properties = function () {
- this.valueOf = 0;
- }).prototype.valueOf = 0;
- // Iterate over a new instance of the `Properties` class.
- members = new Properties();
- for (property in members) {
- // Ignore all properties inherited from `Object.prototype`.
- if (isProperty.call(members, property)) {
- size++;
- }
- }
- Properties = members = null;
- // Normalize the iteration algorithm.
- if (!size) {
- // A list of non-enumerable properties inherited from `Object.prototype`.
- members = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"];
- // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
- // properties.
- forEach = function (object, callback) {
- var isFunction = getClass.call(object) == functionClass, property, length;
- var hasProperty = !isFunction && typeof object.constructor != "function" && objectTypes[typeof object.hasOwnProperty] && object.hasOwnProperty || isProperty;
- for (property in object) {
- // Gecko <= 1.0 enumerates the `prototype` property of functions under
- // certain conditions; IE does not.
- if (!(isFunction && property == "prototype") && hasProperty.call(object, property)) {
- callback(property);
- }
- }
- // Manually invoke the callback for each non-enumerable property.
- for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));
- };
- } else if (size == 2) {
- // Safari <= 2.0.4 enumerates shadowed properties twice.
- forEach = function (object, callback) {
- // Create a set of iterated properties.
- var members = {}, isFunction = getClass.call(object) == functionClass, property;
- for (property in object) {
- // Store each property name to prevent double enumeration. The
- // `prototype` property of functions is not enumerated due to cross-
- // environment inconsistencies.
- if (!(isFunction && property == "prototype") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {
- callback(property);
- }
- }
- };
- } else {
- // No bugs detected; use the standard `for...in` algorithm.
- forEach = function (object, callback) {
- var isFunction = getClass.call(object) == functionClass, property, isConstructor;
- for (property in object) {
- if (!(isFunction && property == "prototype") && isProperty.call(object, property) && !(isConstructor = property === "constructor")) {
- callback(property);
- }
- }
- // Manually invoke the callback for the `constructor` property due to
- // cross-environment inconsistencies.
- if (isConstructor || isProperty.call(object, (property = "constructor"))) {
- callback(property);
- }
- };
- }
- return forEach(object, callback);
- };
- // Public: Serializes a JavaScript `value` as a JSON string. The optional
- // `filter` argument may specify either a function that alters how object and
- // array members are serialized, or an array of strings and numbers that
- // indicates which properties should be serialized. The optional `width`
- // argument may be either a string or number that specifies the indentation
- // level of the output.
- if (!has("json-stringify")) {
- // Internal: A map of control characters and their escaped equivalents.
- var Escapes = {
- 92: "\\\\",
- 34: '\\"',
- 8: "\\b",
- 12: "\\f",
- 10: "\\n",
- 13: "\\r",
- 9: "\\t"
- };
- // Internal: Converts `value` into a zero-padded string such that its
- // length is at least equal to `width`. The `width` must be <= 6.
- var leadingZeroes = "000000";
- var toPaddedString = function (width, value) {
- // The `|| 0` expression is necessary to work around a bug in
- // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== "0"`.
- return (leadingZeroes + (value || 0)).slice(-width);
- };
- // Internal: Double-quotes a string `value`, replacing all ASCII control
- // characters (characters with code unit values between 0 and 31) with
- // their escaped equivalents. This is an implementation of the
- // `Quote(value)` operation defined in ES 5.1 section 15.12.3.
- var unicodePrefix = "\\u00";
- var quote = function (value) {
- var result = '"', index = 0, length = value.length, useCharIndex = !charIndexBuggy || length > 10;
- var symbols = useCharIndex && (charIndexBuggy ? value.split("") : value);
- for (; index < length; index++) {
- var charCode = value.charCodeAt(index);
- // If the character is a control character, append its Unicode or
- // shorthand escape sequence; otherwise, append the character as-is.
- switch (charCode) {
- case 8: case 9: case 10: case 12: case 13: case 34: case 92:
- result += Escapes[charCode];
- break;
- default:
- if (charCode < 32) {
- result += unicodePrefix + toPaddedString(2, charCode.toString(16));
- break;
- }
- result += useCharIndex ? symbols[index] : value.charAt(index);
- }
- }
- return result + '"';
- };
- // Internal: Recursively serializes an object. Implements the
- // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
- var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {
- var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;
- try {
- // Necessary for host object support.
- value = object[property];
- } catch (exception) {}
- if (typeof value == "object" && value) {
- className = getClass.call(value);
- if (className == dateClass && !isProperty.call(value, "toJSON")) {
- if (value > -1 / 0 && value < 1 / 0) {
- // Dates are serialized according to the `Date#toJSON` method
- // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
- // for the ISO 8601 date time string format.
- if (getDay) {
- // Manually compute the year, month, date, hours, minutes,
- // seconds, and milliseconds if the `getUTC*` methods are
- // buggy. Adapted from @Yaffle's `date-shim` project.
- date = floor(value / 864e5);
- for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);
- for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);
- date = 1 + date - getDay(year, month);
- // The `time` value specifies the time within the day (see ES
- // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
- // to compute `A modulo B`, as the `%` operator does not
- // correspond to the `modulo` operation for negative numbers.
- time = (value % 864e5 + 864e5) % 864e5;
- // The hours, minutes, seconds, and milliseconds are obtained by
- // decomposing the time within the day. See section 15.9.1.10.
- hours = floor(time / 36e5) % 24;
- minutes = floor(time / 6e4) % 60;
- seconds = floor(time / 1e3) % 60;
- milliseconds = time % 1e3;
- } else {
- year = value.getUTCFullYear();
- month = value.getUTCMonth();
- date = value.getUTCDate();
- hours = value.getUTCHours();
- minutes = value.getUTCMinutes();
- seconds = value.getUTCSeconds();
- milliseconds = value.getUTCMilliseconds();
- }
- // Serialize extended years correctly.
- value = (year <= 0 || year >= 1e4 ? (year < 0 ? "-" : "+") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +
- "-" + toPaddedString(2, month + 1) + "-" + toPaddedString(2, date) +
- // Months, dates, hours, minutes, and seconds should have two
- // digits; milliseconds should have three.
- "T" + toPaddedString(2, hours) + ":" + toPaddedString(2, minutes) + ":" + toPaddedString(2, seconds) +
- // Milliseconds are optional in ES 5.0, but required in 5.1.
- "." + toPaddedString(3, milliseconds) + "Z";
- } else {
- value = null;
- }
- } else if (typeof value.toJSON == "function" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, "toJSON"))) {
- // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
- // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
- // ignores all `toJSON` methods on these objects unless they are
- // defined directly on an instance.
- value = value.toJSON(property);
- }
- }
- if (callback) {
- // If a replacement function was provided, call it to obtain the value
- // for serialization.
- value = callback.call(object, property, value);
- }
- if (value === null) {
- return "null";
- }
- className = getClass.call(value);
- if (className == booleanClass) {
- // Booleans are represented literally.
- return "" + value;
- } else if (className == numberClass) {
- // JSON numbers must be finite. `Infinity` and `NaN` are serialized as
- // `"null"`.
- return value > -1 / 0 && value < 1 / 0 ? "" + value : "null";
- } else if (className == stringClass) {
- // Strings are double-quoted and escaped.
- return quote("" + value);
- }
- // Recursively serialize objects and arrays.
- if (typeof value == "object") {
- // Check for cyclic structures. This is a linear search; performance
- // is inversely proportional to the number of unique nested objects.
- for (length = stack.length; length--;) {
- if (stack[length] === value) {
- // Cyclic structures cannot be serialized by `JSON.stringify`.
- throw TypeError();
- }
- }
- // Add the object to the stack of traversed objects.
- stack.push(value);
- results = [];
- // Save the current indentation level and indent one additional level.
- prefix = indentation;
- indentation += whitespace;
- if (className == arrayClass) {
- // Recursively serialize array elements.
- for (index = 0, length = value.length; index < length; index++) {
- element = serialize(index, value, callback, properties, whitespace, indentation, stack);
- results.push(element === undef ? "null" : element);
- }
- result = results.length ? (whitespace ? "[\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "]" : ("[" + results.join(",") + "]")) : "[]";
- } else {
- // Recursively serialize object members. Members are selected from
- // either a user-specified list of property names, or the object
- // itself.
- forEach(properties || value, function (property) {
- var element = serialize(property, value, callback, properties, whitespace, indentation, stack);
- if (element !== undef) {
- // According to ES 5.1 section 15.12.3: "If `gap` {whitespace}
- // is not the empty string, let `member` {quote(property) + ":"}
- // be the concatenation of `member` and the `space` character."
- // The "`space` character" refers to the literal space
- // character, not the `space` {width} argument provided to
- // `JSON.stringify`.
- results.push(quote(property) + ":" + (whitespace ? " " : "") + element);
- }
- });
- result = results.length ? (whitespace ? "{\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "}" : ("{" + results.join(",") + "}")) : "{}";
- }
- // Remove the object from the traversed object stack.
- stack.pop();
- return result;
- }
- };
- // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
- exports.stringify = function (source, filter, width) {
- var whitespace, callback, properties, className;
- if (objectTypes[typeof filter] && filter) {
- if ((className = getClass.call(filter)) == functionClass) {
- callback = filter;
- } else if (className == arrayClass) {
- // Convert the property names array into a makeshift set.
- properties = {};
- for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));
- }
- }
- if (width) {
- if ((className = getClass.call(width)) == numberClass) {
- // Convert the `width` to an integer and create a string containing
- // `width` number of space characters.
- if ((width -= width % 1) > 0) {
- for (whitespace = "", width > 10 && (width = 10); whitespace.length < width; whitespace += " ");
- }
- } else if (className == stringClass) {
- whitespace = width.length <= 10 ? width : width.slice(0, 10);
- }
- }
- // Opera <= 7.54u2 discards the values associated with empty string keys
- // (`""`) only if they are used directly within an object member list
- // (e.g., `!("" in { "": 1})`).
- return serialize("", (value = {}, value[""] = source, value), callback, properties, whitespace, "", []);
- };
- }
- // Public: Parses a JSON source string.
- if (!has("json-parse")) {
- var fromCharCode = String.fromCharCode;
- // Internal: A map of escaped control characters and their unescaped
- // equivalents.
- var Unescapes = {
- 92: "\\",
- 34: '"',
- 47: "/",
- 98: "\b",
- 116: "\t",
- 110: "\n",
- 102: "\f",
- 114: "\r"
- };
- // Internal: Stores the parser state.
- var Index, Source;
- // Internal: Resets the parser state and throws a `SyntaxError`.
- var abort = function () {
- Index = Source = null;
- throw SyntaxError();
- };
- // Internal: Returns the next token, or `"$"` if the parser has reached
- // the end of the source string. A token may be a string, number, `null`
- // literal, or Boolean literal.
- var lex = function () {
- var source = Source, length = source.length, value, begin, position, isSigned, charCode;
- while (Index < length) {
- charCode = source.charCodeAt(Index);
- switch (charCode) {
- case 9: case 10: case 13: case 32:
- // Skip whitespace tokens, including tabs, carriage returns, line
- // feeds, and space characters.
- Index++;
- break;
- case 123: case 125: case 91: case 93: case 58: case 44:
- // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at
- // the current position.
- value = charIndexBuggy ? source.charAt(Index) : source[Index];
- Index++;
- return value;
- case 34:
- // `"` delimits a JSON string; advance to the next character and
- // begin parsing the string. String tokens are prefixed with the
- // sentinel `@` character to distinguish them from punctuators and
- // end-of-string tokens.
- for (value = "@", Index++; Index < length;) {
- charCode = source.charCodeAt(Index);
- if (charCode < 32) {
- // Unescaped ASCII control characters (those with a code unit
- // less than the space character) are not permitted.
- abort();
- } else if (charCode == 92) {
- // A reverse solidus (`\`) marks the beginning of an escaped
- // control character (including `"`, `\`, and `/`) or Unicode
- // escape sequence.
- charCode = source.charCodeAt(++Index);
- switch (charCode) {
- case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:
- // Revive escaped control characters.
- value += Unescapes[charCode];
- Index++;
- break;
- case 117:
- // `\u` marks the beginning of a Unicode escape sequence.
- // Advance to the first character and validate the
- // four-digit code point.
- begin = ++Index;
- for (position = Index + 4; Index < position; Index++) {
- charCode = source.charCodeAt(Index);
- // A valid sequence comprises four hexdigits (case-
- // insensitive) that form a single hexadecimal value.
- if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {
- // Invalid Unicode escape sequence.
- abort();
- }
- }
- // Revive the escaped character.
- value += fromCharCode("0x" + source.slice(begin, Index));
- break;
- default:
- // Invalid escape sequence.
- abort();
- }
- } else {
- if (charCode == 34) {
- // An unescaped double-quote character marks the end of the
- // string.
- break;
- }
- charCode = source.charCodeAt(Index);
- begin = Index;
- // Optimize for the common case where a string is valid.
- while (charCode >= 32 && charCode != 92 && charCode != 34) {
- charCode = source.charCodeAt(++Index);
- }
- // Append the string as-is.
- value += source.slice(begin, Index);
- }
- }
- if (source.charCodeAt(Index) == 34) {
- // Advance to the next character and return the revived string.
- Index++;
- return value;
- }
- // Unterminated string.
- abort();
- default:
- // Parse numbers and literals.
- begin = Index;
- // Advance past the negative sign, if one is specified.
- if (charCode == 45) {
- isSigned = true;
- charCode = source.charCodeAt(++Index);
- }
- // Parse an integer or floating-point value.
- if (charCode >= 48 && charCode <= 57) {
- // Leading zeroes are interpreted as octal literals.
- if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {
- // Illegal octal literal.
- abort();
- }
- isSigned = false;
- // Parse the integer component.
- for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);
- // Floats cannot contain a leading decimal point; however, this
- // case is already accounted for by the parser.
- if (source.charCodeAt(Index) == 46) {
- position = ++Index;
- // Parse the decimal component.
- for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
- if (position == Index) {
- // Illegal trailing decimal.
- abort();
- }
- Index = position;
- }
- // Parse exponents. The `e` denoting the exponent is
- // case-insensitive.
- charCode = source.charCodeAt(Index);
- if (charCode == 101 || charCode == 69) {
- charCode = source.charCodeAt(++Index);
- // Skip past the sign following the exponent, if one is
- // specified.
- if (charCode == 43 || charCode == 45) {
- Index++;
- }
- // Parse the exponential component.
- for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
- if (position == Index) {
- // Illegal empty exponent.
- abort();
- }
- Index = position;
- }
- // Coerce the parsed value to a JavaScript number.
- return +source.slice(begin, Index);
- }
- // A negative sign may only precede numbers.
- if (isSigned) {
- abort();
- }
- // `true`, `false`, and `null` literals.
- if (source.slice(Index, Index + 4) == "true") {
- Index += 4;
- return true;
- } else if (source.slice(Index, Index + 5) == "false") {
- Index += 5;
- return false;
- } else if (source.slice(Index, Index + 4) == "null") {
- Index += 4;
- return null;
- }
- // Unrecognized token.
- abort();
- }
- }
- // Return the sentinel `$` character if the parser has reached the end
- // of the source string.
- return "$";
- };
- // Internal: Parses a JSON `value` token.
- var get = function (value) {
- var results, hasMembers;
- if (value == "$") {
- // Unexpected end of input.
- abort();
- }
- if (typeof value == "string") {
- if ((charIndexBuggy ? value.charAt(0) : value[0]) == "@") {
- // Remove the sentinel `@` character.
- return value.slice(1);
- }
- // Parse object and array literals.
- if (value == "[") {
- // Parses a JSON array, returning a new JavaScript array.
- results = [];
- for (;; hasMembers || (hasMembers = true)) {
- value = lex();
- // A closing square bracket marks the end of the array literal.
- if (value == "]") {
- break;
- }
- // If the array literal contains elements, the current token
- // should be a comma separating the previous element from the
- // next.
- if (hasMembers) {
- if (value == ",") {
- value = lex();
- if (value == "]") {
- // Unexpected trailing `,` in array literal.
- abort();
- }
- } else {
- // A `,` must separate each array element.
- abort();
- }
- }
- // Elisions and leading commas are not permitted.
- if (value == ",") {
- abort();
- }
- results.push(get(value));
- }
- return results;
- } else if (value == "{") {
- // Parses a JSON object, returning a new JavaScript object.
- results = {};
- for (;; hasMembers || (hasMembers = true)) {
- value = lex();
- // A closing curly brace marks the end of the object literal.
- if (value == "}") {
- break;
- }
- // If the object literal contains members, the current token
- // should be a comma separator.
- if (hasMembers) {
- if (value == ",") {
- value = lex();
- if (value == "}") {
- // Unexpected trailing `,` in object literal.
- abort();
- }
- } else {
- // A `,` must separate each object member.
- abort();
- }
- }
- // Leading commas are not permitted, object property names must be
- // double-quoted strings, and a `:` must separate each property
- // name and value.
- if (value == "," || typeof value != "string" || (charIndexBuggy ? value.charAt(0) : value[0]) != "@" || lex() != ":") {
- abort();
- }
- results[value.slice(1)] = get(lex());
- }
- return results;
- }
- // Unexpected token encountered.
- abort();
- }
- return value;
- };
- // Internal: Updates a traversed object member.
- var update = function (source, property, callback) {
- var element = walk(source, property, callback);
- if (element === undef) {
- delete source[property];
- } else {
- source[property] = element;
- }
- };
- // Internal: Recursively traverses a parsed JSON object, invoking the
- // `callback` function for each value. This is an implementation of the
- // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
- var walk = function (source, property, callback) {
- var value = source[property], length;
- if (typeof value == "object" && value) {
- // `forEach` can't be used to traverse an array in Opera <= 8.54
- // because its `Object#hasOwnProperty` implementation returns `false`
- // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
- if (getClass.call(value) == arrayClass) {
- for (length = value.length; length--;) {
- update(value, length, callback);
- }
- } else {
- forEach(value, function (property) {
- update(value, property, callback);
- });
- }
- }
- return callback.call(source, property, value);
- };
- // Public: `JSON.parse`. See ES 5.1 section 15.12.2.
- exports.parse = function (source, callback) {
- var result, value;
- Index = 0;
- Source = "" + source;
- result = get(lex());
- // If a JSON string contains multiple tokens, it is invalid.
- if (lex() != "$") {
- abort();
- }
- // Reset the parser state.
- Index = Source = null;
- return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[""] = result, value), "", callback) : result;
- };
- }
- }
- exports["runInContext"] = runInContext;
- return exports;
- }
- if (freeExports && !isLoader) {
- // Export for CommonJS environments.
- runInContext(root, freeExports);
- } else {
- // Export for web browsers and JavaScript engines.
- var nativeJSON = root.JSON,
- previousJSON = root["JSON3"],
- isRestored = false;
- var JSON3 = runInContext(root, (root["JSON3"] = {
- // Public: Restores the original value of the global `JSON` object and
- // returns a reference to the `JSON3` object.
- "noConflict": function () {
- if (!isRestored) {
- isRestored = true;
- root.JSON = nativeJSON;
- root["JSON3"] = previousJSON;
- nativeJSON = previousJSON = null;
- }
- return JSON3;
- }
- }));
- root.JSON = {
- "parse": JSON3.parse,
- "stringify": JSON3.stringify
- };
- }
- // Export for asynchronous module loaders.
- if (isLoader) {
- define(function () {
- return JSON3;
- });
- }
- }).call(this);
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{}],35:[function(_dereq_,module,exports){
- /**
- * Helpers.
- */
- var s = 1000;
- var m = s * 60;
- var h = m * 60;
- var d = h * 24;
- var y = d * 365.25;
- /**
- * Parse or format the given `val`.
- *
- * Options:
- *
- * - `long` verbose formatting [false]
- *
- * @param {String|Number} val
- * @param {Object} options
- * @return {String|Number}
- * @api public
- */
- module.exports = function(val, options){
- options = options || {};
- if ('string' == typeof val) return parse(val);
- return options.long
- ? long(val)
- : short(val);
- };
- /**
- * Parse the given `str` and return milliseconds.
- *
- * @param {String} str
- * @return {Number}
- * @api private
- */
- function parse(str) {
- str = '' + str;
- if (str.length > 10000) return;
- var match = /^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str);
- if (!match) return;
- var n = parseFloat(match[1]);
- var type = (match[2] || 'ms').toLowerCase();
- switch (type) {
- case 'years':
- case 'year':
- case 'yrs':
- case 'yr':
- case 'y':
- return n * y;
- case 'days':
- case 'day':
- case 'd':
- return n * d;
- case 'hours':
- case 'hour':
- case 'hrs':
- case 'hr':
- case 'h':
- return n * h;
- case 'minutes':
- case 'minute':
- case 'mins':
- case 'min':
- case 'm':
- return n * m;
- case 'seconds':
- case 'second':
- case 'secs':
- case 'sec':
- case 's':
- return n * s;
- case 'milliseconds':
- case 'millisecond':
- case 'msecs':
- case 'msec':
- case 'ms':
- return n;
- }
- }
- /**
- * Short format for `ms`.
- *
- * @param {Number} ms
- * @return {String}
- * @api private
- */
- function short(ms) {
- if (ms >= d) return Math.round(ms / d) + 'd';
- if (ms >= h) return Math.round(ms / h) + 'h';
- if (ms >= m) return Math.round(ms / m) + 'm';
- if (ms >= s) return Math.round(ms / s) + 's';
- return ms + 'ms';
- }
- /**
- * Long format for `ms`.
- *
- * @param {Number} ms
- * @return {String}
- * @api private
- */
- function long(ms) {
- return plural(ms, d, 'day')
- || plural(ms, h, 'hour')
- || plural(ms, m, 'minute')
- || plural(ms, s, 'second')
- || ms + ' ms';
- }
- /**
- * Pluralization helper.
- */
- function plural(ms, n, name) {
- if (ms < n) return;
- if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;
- return Math.ceil(ms / n) + ' ' + name + 's';
- }
- },{}],36:[function(_dereq_,module,exports){
- (function (global){
- /**
- * JSON parse.
- *
- * @see Based on jQuery#parseJSON (MIT) and JSON2
- * @api private
- */
- var rvalidchars = /^[\],:{}\s]*$/;
- var rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
- var rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
- var rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g;
- var rtrimLeft = /^\s+/;
- var rtrimRight = /\s+$/;
- module.exports = function parsejson(data) {
- if ('string' != typeof data || !data) {
- return null;
- }
- data = data.replace(rtrimLeft, '').replace(rtrimRight, '');
- // Attempt to parse using the native JSON parser first
- if (global.JSON && JSON.parse) {
- return JSON.parse(data);
- }
- if (rvalidchars.test(data.replace(rvalidescape, '@')
- .replace(rvalidtokens, ']')
- .replace(rvalidbraces, ''))) {
- return (new Function('return ' + data))();
- }
- };
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{}],37:[function(_dereq_,module,exports){
- /**
- * Compiles a querystring
- * Returns string representation of the object
- *
- * @param {Object}
- * @api private
- */
- exports.encode = function (obj) {
- var str = '';
- for (var i in obj) {
- if (obj.hasOwnProperty(i)) {
- if (str.length) str += '&';
- str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
- }
- }
- return str;
- };
- /**
- * Parses a simple querystring into an object
- *
- * @param {String} qs
- * @api private
- */
- exports.decode = function(qs){
- var qry = {};
- var pairs = qs.split('&');
- for (var i = 0, l = pairs.length; i < l; i++) {
- var pair = pairs[i].split('=');
- qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
- }
- return qry;
- };
- },{}],38:[function(_dereq_,module,exports){
- /**
- * Parses an URI
- *
- * @author Steven Levithan <stevenlevithan.com> (MIT license)
- * @api private
- */
- var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
- var parts = [
- 'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
- ];
- module.exports = function parseuri(str) {
- var src = str,
- b = str.indexOf('['),
- e = str.indexOf(']');
- if (b != -1 && e != -1) {
- str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
- }
- var m = re.exec(str || ''),
- uri = {},
- i = 14;
- while (i--) {
- uri[parts[i]] = m[i] || '';
- }
- if (b != -1 && e != -1) {
- uri.source = src;
- uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
- uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
- uri.ipv6uri = true;
- }
- return uri;
- };
- },{}],39:[function(_dereq_,module,exports){
- (function (global){
- /*global Blob,File*/
- /**
- * Module requirements
- */
- var isArray = _dereq_('isarray');
- var isBuf = _dereq_('./is-buffer');
- /**
- * Replaces every Buffer | ArrayBuffer in packet with a numbered placeholder.
- * Anything with blobs or files should be fed through removeBlobs before coming
- * here.
- *
- * @param {Object} packet - socket.io event packet
- * @return {Object} with deconstructed packet and list of buffers
- * @api public
- */
- exports.deconstructPacket = function(packet){
- var buffers = [];
- var packetData = packet.data;
- function _deconstructPacket(data) {
- if (!data) return data;
- if (isBuf(data)) {
- var placeholder = { _placeholder: true, num: buffers.length };
- buffers.push(data);
- return placeholder;
- } else if (isArray(data)) {
- var newData = new Array(data.length);
- for (var i = 0; i < data.length; i++) {
- newData[i] = _deconstructPacket(data[i]);
- }
- return newData;
- } else if ('object' == typeof data && !(data instanceof Date)) {
- var newData = {};
- for (var key in data) {
- newData[key] = _deconstructPacket(data[key]);
- }
- return newData;
- }
- return data;
- }
- var pack = packet;
- pack.data = _deconstructPacket(packetData);
- pack.attachments = buffers.length; // number of binary 'attachments'
- return {packet: pack, buffers: buffers};
- };
- /**
- * Reconstructs a binary packet from its placeholder packet and buffers
- *
- * @param {Object} packet - event packet with placeholders
- * @param {Array} buffers - binary buffers to put in placeholder positions
- * @return {Object} reconstructed packet
- * @api public
- */
- exports.reconstructPacket = function(packet, buffers) {
- var curPlaceHolder = 0;
- function _reconstructPacket(data) {
- if (data && data._placeholder) {
- var buf = buffers[data.num]; // appropriate buffer (should be natural order anyway)
- return buf;
- } else if (isArray(data)) {
- for (var i = 0; i < data.length; i++) {
- data[i] = _reconstructPacket(data[i]);
- }
- return data;
- } else if (data && 'object' == typeof data) {
- for (var key in data) {
- data[key] = _reconstructPacket(data[key]);
- }
- return data;
- }
- return data;
- }
- packet.data = _reconstructPacket(packet.data);
- packet.attachments = undefined; // no longer useful
- return packet;
- };
- /**
- * Asynchronously removes Blobs or Files from data via
- * FileReader's readAsArrayBuffer method. Used before encoding
- * data as msgpack. Calls callback with the blobless data.
- *
- * @param {Object} data
- * @param {Function} callback
- * @api private
- */
- exports.removeBlobs = function(data, callback) {
- function _removeBlobs(obj, curKey, containingObject) {
- if (!obj) return obj;
- // convert any blob
- if ((global.Blob && obj instanceof Blob) ||
- (global.File && obj instanceof File)) {
- pendingBlobs++;
- // async filereader
- var fileReader = new FileReader();
- fileReader.onload = function() { // this.result == arraybuffer
- if (containingObject) {
- containingObject[curKey] = this.result;
- }
- else {
- bloblessData = this.result;
- }
- // if nothing pending its callback time
- if(! --pendingBlobs) {
- callback(bloblessData);
- }
- };
- fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer
- } else if (isArray(obj)) { // handle array
- for (var i = 0; i < obj.length; i++) {
- _removeBlobs(obj[i], i, obj);
- }
- } else if (obj && 'object' == typeof obj && !isBuf(obj)) { // and object
- for (var key in obj) {
- _removeBlobs(obj[key], key, obj);
- }
- }
- }
- var pendingBlobs = 0;
- var bloblessData = data;
- _removeBlobs(bloblessData);
- if (!pendingBlobs) {
- callback(bloblessData);
- }
- };
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{"./is-buffer":41,"isarray":33}],40:[function(_dereq_,module,exports){
- /**
- * Module dependencies.
- */
- var debug = _dereq_('debug')('socket.io-parser');
- var json = _dereq_('json3');
- var isArray = _dereq_('isarray');
- var Emitter = _dereq_('component-emitter');
- var binary = _dereq_('./binary');
- var isBuf = _dereq_('./is-buffer');
- /**
- * Protocol version.
- *
- * @api public
- */
- exports.protocol = 4;
- /**
- * Packet types.
- *
- * @api public
- */
- exports.types = [
- 'CONNECT',
- 'DISCONNECT',
- 'EVENT',
- 'ACK',
- 'ERROR',
- 'BINARY_EVENT',
- 'BINARY_ACK'
- ];
- /**
- * Packet type `connect`.
- *
- * @api public
- */
- exports.CONNECT = 0;
- /**
- * Packet type `disconnect`.
- *
- * @api public
- */
- exports.DISCONNECT = 1;
- /**
- * Packet type `event`.
- *
- * @api public
- */
- exports.EVENT = 2;
- /**
- * Packet type `ack`.
- *
- * @api public
- */
- exports.ACK = 3;
- /**
- * Packet type `error`.
- *
- * @api public
- */
- exports.ERROR = 4;
- /**
- * Packet type 'binary event'
- *
- * @api public
- */
- exports.BINARY_EVENT = 5;
- /**
- * Packet type `binary ack`. For acks with binary arguments.
- *
- * @api public
- */
- exports.BINARY_ACK = 6;
- /**
- * Encoder constructor.
- *
- * @api public
- */
- exports.Encoder = Encoder;
- /**
- * Decoder constructor.
- *
- * @api public
- */
- exports.Decoder = Decoder;
- /**
- * A socket.io Encoder instance
- *
- * @api public
- */
- function Encoder() {}
- /**
- * Encode a packet as a single string if non-binary, or as a
- * buffer sequence, depending on packet type.
- *
- * @param {Object} obj - packet object
- * @param {Function} callback - function to handle encodings (likely engine.write)
- * @return Calls callback with Array of encodings
- * @api public
- */
- Encoder.prototype.encode = function(obj, callback){
- debug('encoding packet %j', obj);
- if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
- encodeAsBinary(obj, callback);
- }
- else {
- var encoding = encodeAsString(obj);
- callback([encoding]);
- }
- };
- /**
- * Encode packet as string.
- *
- * @param {Object} packet
- * @return {String} encoded
- * @api private
- */
- function encodeAsString(obj) {
- var str = '';
- var nsp = false;
- // first is type
- str += obj.type;
- // attachments if we have them
- if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
- str += obj.attachments;
- str += '-';
- }
- // if we have a namespace other than `/`
- // we append it followed by a comma `,`
- if (obj.nsp && '/' != obj.nsp) {
- nsp = true;
- str += obj.nsp;
- }
- // immediately followed by the id
- if (null != obj.id) {
- if (nsp) {
- str += ',';
- nsp = false;
- }
- str += obj.id;
- }
- // json data
- if (null != obj.data) {
- if (nsp) str += ',';
- str += json.stringify(obj.data);
- }
- debug('encoded %j as %s', obj, str);
- return str;
- }
- /**
- * Encode packet as 'buffer sequence' by removing blobs, and
- * deconstructing packet into object with placeholders and
- * a list of buffers.
- *
- * @param {Object} packet
- * @return {Buffer} encoded
- * @api private
- */
- function encodeAsBinary(obj, callback) {
- function writeEncoding(bloblessData) {
- var deconstruction = binary.deconstructPacket(bloblessData);
- var pack = encodeAsString(deconstruction.packet);
- var buffers = deconstruction.buffers;
- buffers.unshift(pack); // add packet info to beginning of data list
- callback(buffers); // write all the buffers
- }
- binary.removeBlobs(obj, writeEncoding);
- }
- /**
- * A socket.io Decoder instance
- *
- * @return {Object} decoder
- * @api public
- */
- function Decoder() {
- this.reconstructor = null;
- }
- /**
- * Mix in `Emitter` with Decoder.
- */
- Emitter(Decoder.prototype);
- /**
- * Decodes an ecoded packet string into packet JSON.
- *
- * @param {String} obj - encoded packet
- * @return {Object} packet
- * @api public
- */
- Decoder.prototype.add = function(obj) {
- var packet;
- if ('string' == typeof obj) {
- packet = decodeString(obj);
- if (exports.BINARY_EVENT == packet.type || exports.BINARY_ACK == packet.type) { // binary packet's json
- this.reconstructor = new BinaryReconstructor(packet);
- // no attachments, labeled binary but no binary data to follow
- if (this.reconstructor.reconPack.attachments === 0) {
- this.emit('decoded', packet);
- }
- } else { // non-binary full packet
- this.emit('decoded', packet);
- }
- }
- else if (isBuf(obj) || obj.base64) { // raw binary data
- if (!this.reconstructor) {
- throw new Error('got binary data when not reconstructing a packet');
- } else {
- packet = this.reconstructor.takeBinaryData(obj);
- if (packet) { // received final buffer
- this.reconstructor = null;
- this.emit('decoded', packet);
- }
- }
- }
- else {
- throw new Error('Unknown type: ' + obj);
- }
- };
- /**
- * Decode a packet String (JSON data)
- *
- * @param {String} str
- * @return {Object} packet
- * @api private
- */
- function decodeString(str) {
- var p = {};
- var i = 0;
- // look up type
- p.type = Number(str.charAt(0));
- if (null == exports.types[p.type]) return error();
- // look up attachments if type binary
- if (exports.BINARY_EVENT == p.type || exports.BINARY_ACK == p.type) {
- var buf = '';
- while (str.charAt(++i) != '-') {
- buf += str.charAt(i);
- if (i == str.length) break;
- }
- if (buf != Number(buf) || str.charAt(i) != '-') {
- throw new Error('Illegal attachments');
- }
- p.attachments = Number(buf);
- }
- // look up namespace (if any)
- if ('/' == str.charAt(i + 1)) {
- p.nsp = '';
- while (++i) {
- var c = str.charAt(i);
- if (',' == c) break;
- p.nsp += c;
- if (i == str.length) break;
- }
- } else {
- p.nsp = '/';
- }
- // look up id
- var next = str.charAt(i + 1);
- if ('' !== next && Number(next) == next) {
- p.id = '';
- while (++i) {
- var c = str.charAt(i);
- if (null == c || Number(c) != c) {
- --i;
- break;
- }
- p.id += str.charAt(i);
- if (i == str.length) break;
- }
- p.id = Number(p.id);
- }
- // look up json data
- if (str.charAt(++i)) {
- try {
- p.data = json.parse(str.substr(i));
- } catch(e){
- return error();
- }
- }
- debug('decoded %s as %j', str, p);
- return p;
- }
- /**
- * Deallocates a parser's resources
- *
- * @api public
- */
- Decoder.prototype.destroy = function() {
- if (this.reconstructor) {
- this.reconstructor.finishedReconstruction();
- }
- };
- /**
- * A manager of a binary event's 'buffer sequence'. Should
- * be constructed whenever a packet of type BINARY_EVENT is
- * decoded.
- *
- * @param {Object} packet
- * @return {BinaryReconstructor} initialized reconstructor
- * @api private
- */
- function BinaryReconstructor(packet) {
- this.reconPack = packet;
- this.buffers = [];
- }
- /**
- * Method to be called when binary data received from connection
- * after a BINARY_EVENT packet.
- *
- * @param {Buffer | ArrayBuffer} binData - the raw binary data received
- * @return {null | Object} returns null if more binary data is expected or
- * a reconstructed packet object if all buffers have been received.
- * @api private
- */
- BinaryReconstructor.prototype.takeBinaryData = function(binData) {
- this.buffers.push(binData);
- if (this.buffers.length == this.reconPack.attachments) { // done with buffer list
- var packet = binary.reconstructPacket(this.reconPack, this.buffers);
- this.finishedReconstruction();
- return packet;
- }
- return null;
- };
- /**
- * Cleans up binary packet reconstruction variables.
- *
- * @api private
- */
- BinaryReconstructor.prototype.finishedReconstruction = function() {
- this.reconPack = null;
- this.buffers = [];
- };
- function error(data){
- return {
- type: exports.ERROR,
- data: 'parser error'
- };
- }
- },{"./binary":39,"./is-buffer":41,"component-emitter":42,"debug":14,"isarray":33,"json3":34}],41:[function(_dereq_,module,exports){
- (function (global){
- module.exports = isBuf;
- /**
- * Returns true if obj is a buffer or an arraybuffer.
- *
- * @api private
- */
- function isBuf(obj) {
- return (global.Buffer && global.Buffer.isBuffer(obj)) ||
- (global.ArrayBuffer && obj instanceof ArrayBuffer);
- }
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{}],42:[function(_dereq_,module,exports){
- arguments[4][26][0].apply(exports,arguments)
- },{"dup":26}],43:[function(_dereq_,module,exports){
- module.exports = toArray
- function toArray(list, index) {
- var array = []
- index = index || 0
- for (var i = index || 0; i < list.length; i++) {
- array[i - index] = list[i]
- }
- return array
- }
- },{}],44:[function(_dereq_,module,exports){
- (function (global){
- /*! https://mths.be/utf8js v2.0.0 by @mathias */
- ;(function(root) {
- // Detect free variables `exports`
- var freeExports = typeof exports == 'object' && exports;
- // Detect free variable `module`
- var freeModule = typeof module == 'object' && module &&
- module.exports == freeExports && module;
- // Detect free variable `global`, from Node.js or Browserified code,
- // and use it as `root`
- var freeGlobal = typeof global == 'object' && global;
- if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
- root = freeGlobal;
- }
- /*--------------------------------------------------------------------------*/
- var stringFromCharCode = String.fromCharCode;
- // Taken from https://mths.be/punycode
- function ucs2decode(string) {
- var output = [];
- var counter = 0;
- var length = string.length;
- var value;
- var extra;
- while (counter < length) {
- value = string.charCodeAt(counter++);
- if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
- // high surrogate, and there is a next character
- extra = string.charCodeAt(counter++);
- if ((extra & 0xFC00) == 0xDC00) { // low surrogate
- output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
- } else {
- // unmatched surrogate; only append this code unit, in case the next
- // code unit is the high surrogate of a surrogate pair
- output.push(value);
- counter--;
- }
- } else {
- output.push(value);
- }
- }
- return output;
- }
- // Taken from https://mths.be/punycode
- function ucs2encode(array) {
- var length = array.length;
- var index = -1;
- var value;
- var output = '';
- while (++index < length) {
- value = array[index];
- if (value > 0xFFFF) {
- value -= 0x10000;
- output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
- value = 0xDC00 | value & 0x3FF;
- }
- output += stringFromCharCode(value);
- }
- return output;
- }
- function checkScalarValue(codePoint) {
- if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
- throw Error(
- 'Lone surrogate U+' + codePoint.toString(16).toUpperCase() +
- ' is not a scalar value'
- );
- }
- }
- /*--------------------------------------------------------------------------*/
- function createByte(codePoint, shift) {
- return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
- }
- function encodeCodePoint(codePoint) {
- if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
- return stringFromCharCode(codePoint);
- }
- var symbol = '';
- if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
- symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
- }
- else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
- checkScalarValue(codePoint);
- symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
- symbol += createByte(codePoint, 6);
- }
- else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
- symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
- symbol += createByte(codePoint, 12);
- symbol += createByte(codePoint, 6);
- }
- symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
- return symbol;
- }
- function utf8encode(string) {
- var codePoints = ucs2decode(string);
- var length = codePoints.length;
- var index = -1;
- var codePoint;
- var byteString = '';
- while (++index < length) {
- codePoint = codePoints[index];
- byteString += encodeCodePoint(codePoint);
- }
- return byteString;
- }
- /*--------------------------------------------------------------------------*/
- function readContinuationByte() {
- if (byteIndex >= byteCount) {
- throw Error('Invalid byte index');
- }
- var continuationByte = byteArray[byteIndex] & 0xFF;
- byteIndex++;
- if ((continuationByte & 0xC0) == 0x80) {
- return continuationByte & 0x3F;
- }
- // If we end up here, it’s not a continuation byte
- throw Error('Invalid continuation byte');
- }
- function decodeSymbol() {
- var byte1;
- var byte2;
- var byte3;
- var byte4;
- var codePoint;
- if (byteIndex > byteCount) {
- throw Error('Invalid byte index');
- }
- if (byteIndex == byteCount) {
- return false;
- }
- // Read first byte
- byte1 = byteArray[byteIndex] & 0xFF;
- byteIndex++;
- // 1-byte sequence (no continuation bytes)
- if ((byte1 & 0x80) == 0) {
- return byte1;
- }
- // 2-byte sequence
- if ((byte1 & 0xE0) == 0xC0) {
- var byte2 = readContinuationByte();
- codePoint = ((byte1 & 0x1F) << 6) | byte2;
- if (codePoint >= 0x80) {
- return codePoint;
- } else {
- throw Error('Invalid continuation byte');
- }
- }
- // 3-byte sequence (may include unpaired surrogates)
- if ((byte1 & 0xF0) == 0xE0) {
- byte2 = readContinuationByte();
- byte3 = readContinuationByte();
- codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
- if (codePoint >= 0x0800) {
- checkScalarValue(codePoint);
- return codePoint;
- } else {
- throw Error('Invalid continuation byte');
- }
- }
- // 4-byte sequence
- if ((byte1 & 0xF8) == 0xF0) {
- byte2 = readContinuationByte();
- byte3 = readContinuationByte();
- byte4 = readContinuationByte();
- codePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |
- (byte3 << 0x06) | byte4;
- if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
- return codePoint;
- }
- }
- throw Error('Invalid UTF-8 detected');
- }
- var byteArray;
- var byteCount;
- var byteIndex;
- function utf8decode(byteString) {
- byteArray = ucs2decode(byteString);
- byteCount = byteArray.length;
- byteIndex = 0;
- var codePoints = [];
- var tmp;
- while ((tmp = decodeSymbol()) !== false) {
- codePoints.push(tmp);
- }
- return ucs2encode(codePoints);
- }
- /*--------------------------------------------------------------------------*/
- var utf8 = {
- 'version': '2.0.0',
- 'encode': utf8encode,
- 'decode': utf8decode
- };
- // Some AMD build optimizers, like r.js, check for specific condition patterns
- // like the following:
- if (
- typeof define == 'function' &&
- typeof define.amd == 'object' &&
- define.amd
- ) {
- define(function() {
- return utf8;
- });
- } else if (freeExports && !freeExports.nodeType) {
- if (freeModule) { // in Node.js or RingoJS v0.8.0+
- freeModule.exports = utf8;
- } else { // in Narwhal or RingoJS v0.7.0-
- var object = {};
- var hasOwnProperty = object.hasOwnProperty;
- for (var key in utf8) {
- hasOwnProperty.call(utf8, key) && (freeExports[key] = utf8[key]);
- }
- }
- } else { // in Rhino or a web browser
- root.utf8 = utf8;
- }
- }(this));
- }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
- },{}],45:[function(_dereq_,module,exports){
- 'use strict';
- var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')
- , length = 64
- , map = {}
- , seed = 0
- , i = 0
- , prev;
- /**
- * Return a string representing the specified number.
- *
- * @param {Number} num The number to convert.
- * @returns {String} The string representation of the number.
- * @api public
- */
- function encode(num) {
- var encoded = '';
- do {
- encoded = alphabet[num % length] + encoded;
- num = Math.floor(num / length);
- } while (num > 0);
- return encoded;
- }
- /**
- * Return the integer value specified by the given string.
- *
- * @param {String} str The string to convert.
- * @returns {Number} The integer value represented by the string.
- * @api public
- */
- function decode(str) {
- var decoded = 0;
- for (i = 0; i < str.length; i++) {
- decoded = decoded * length + map[str.charAt(i)];
- }
- return decoded;
- }
- /**
- * Yeast: A tiny growing id generator.
- *
- * @returns {String} A unique id.
- * @api public
- */
- function yeast() {
- var now = encode(+new Date());
- if (now !== prev) return seed = 0, prev = now;
- return now +'.'+ encode(seed++);
- }
- //
- // Map each character to its index.
- //
- for (; i < length; i++) map[alphabet[i]] = i;
- //
- // Expose the `yeast`, `encode` and `decode` functions.
- //
- yeast.encode = encode;
- yeast.decode = decode;
- module.exports = yeast;
- },{}]},{},[1])(1)
- });
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