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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.mqtt = 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 0) {
outStore.read(0)
cb = that.outgoing[packet.messageId]
that.outgoing[packet.messageId] = function (err, status) {
// Ensure that the original callback passed in to publish gets invoked
if (cb) {
cb(err, status)
}
storeDeliver()
}
that._sendPacket(packet)
} else if (outStore.destroy) {
outStore.destroy()
}
}
storeDeliver()
})
.on('error', this.emit.bind(this, 'error'))
})
// Mark disconnected on stream close
this.on('close', function () {
this.connected = false
clearTimeout(this.connackTimer)
})
// Setup ping timer
this.on('connect', this._setupPingTimer)
// Send queued packets
this.on('connect', function () {
var queue = this.queue
function deliver () {
var entry = queue.shift()
var packet = null
if (!entry) {
return
}
packet = entry.packet
that._sendPacket(
packet,
function (err) {
if (entry.cb) {
entry.cb(err)
}
deliver()
}
)
}
deliver()
})
var firstConnection = true
// resubscribe
this.on('connect', function () {
if (!firstConnection &&
this.options.clean &&
Object.keys(this._resubscribeTopics).length > 0) {
if (this.options.resubscribe) {
this._resubscribeTopics.resubscribe = true
this.subscribe(this._resubscribeTopics)
} else {
this._resubscribeTopics = {}
}
}
firstConnection = false
})
// Clear ping timer
this.on('close', function () {
if (that.pingTimer !== null) {
that.pingTimer.clear()
that.pingTimer = null
}
})
// Setup reconnect timer on disconnect
this.on('close', this._setupReconnect)
events.EventEmitter.call(this)
this._setupStream()
}
inherits(MqttClient, events.EventEmitter)
/**
* setup the event handlers in the inner stream.
*
* @api private
*/
MqttClient.prototype._setupStream = function () {
var connectPacket
var that = this
var writable = new Writable()
var parser = mqttPacket.parser(this.options)
var completeParse = null
var packets = []
this._clearReconnect()
this.stream = this.streamBuilder(this)
parser.on('packet', function (packet) {
packets.push(packet)
})
function nextTickWork () {
process.nextTick(work)
}
function work () {
var packet = packets.shift()
var done = completeParse
if (packet) {
that._handlePacket(packet, nextTickWork)
} else {
completeParse = null
done()
}
}
writable._write = function (buf, enc, done) {
completeParse = done
parser.parse(buf)
work()
}
this.stream.pipe(writable)
// Suppress connection errors
this.stream.on('error', nop)
// Echo stream close
eos(this.stream, this.emit.bind(this, 'close'))
// Send a connect packet
connectPacket = Object.create(this.options)
connectPacket.cmd = 'connect'
// avoid message queue
sendPacket(this, connectPacket)
// Echo connection errors
parser.on('error', this.emit.bind(this, 'error'))
// many drain listeners are needed for qos 1 callbacks if the connection is intermittent
this.stream.setMaxListeners(1000)
clearTimeout(this.connackTimer)
this.connackTimer = setTimeout(function () {
that._cleanUp(true)
}, this.options.connectTimeout)
}
MqttClient.prototype._handlePacket = function (packet, done) {
this.emit('packetreceive', packet)
switch (packet.cmd) {
case 'publish':
this._handlePublish(packet, done)
break
case 'puback':
case 'pubrec':
case 'pubcomp':
case 'suback':
case 'unsuback':
this._handleAck(packet)
done()
break
case 'pubrel':
this._handlePubrel(packet, done)
break
case 'connack':
this._handleConnack(packet)
done()
break
case 'pingresp':
this._handlePingresp(packet)
done()
break
default:
// do nothing
// maybe we should do an error handling
// or just log it
break
}
}
MqttClient.prototype._checkDisconnecting = function (callback) {
if (this.disconnecting) {
if (callback) {
callback(new Error('client disconnecting'))
} else {
this.emit('error', new Error('client disconnecting'))
}
}
return this.disconnecting
}
/**
* publish - publish to
*
* @param {String} topic - topic to publish to
* @param {String, Buffer} message - message to publish
* @param {Object} [opts] - publish options, includes:
* {Number} qos - qos level to publish on
* {Boolean} retain - whether or not to retain the message
* {Boolean} dup - whether or not mark a message as duplicate
* @param {Function} [callback] - function(err){}
* called when publish succeeds or fails
* @returns {MqttClient} this - for chaining
* @api public
*
* @example client.publish('topic', 'message');
* @example
* client.publish('topic', 'message', {qos: 1, retain: true, dup: true});
* @example client.publish('topic', 'message', console.log);
*/
MqttClient.prototype.publish = function (topic, message, opts, callback) {
var packet
// .publish(topic, payload, cb);
if (typeof opts === 'function') {
callback = opts
opts = null
}
// default opts
var defaultOpts = {qos: 0, retain: false, dup: false}
opts = xtend(defaultOpts, opts)
if (this._checkDisconnecting(callback)) {
return this
}
packet = {
cmd: 'publish',
topic: topic,
payload: message,
qos: opts.qos,
retain: opts.retain,
messageId: this._nextId(),
dup: opts.dup
}
switch (opts.qos) {
case 1:
case 2:
// Add to callbacks
this.outgoing[packet.messageId] = callback || nop
this._sendPacket(packet)
break
default:
this._sendPacket(packet, callback)
break
}
return this
}
/**
* subscribe - subscribe to
*
* @param {String, Array, Object} topic - topic(s) to subscribe to, supports objects in the form {'topic': qos}
* @param {Object} [opts] - optional subscription options, includes:
* {Number} qos - subscribe qos level
* @param {Function} [callback] - function(err, granted){} where:
* {Error} err - subscription error (none at the moment!)
* {Array} granted - array of {topic: 't', qos: 0}
* @returns {MqttClient} this - for chaining
* @api public
* @example client.subscribe('topic');
* @example client.subscribe('topic', {qos: 1});
* @example client.subscribe({'topic': 0, 'topic2': 1}, console.log);
* @example client.subscribe('topic', console.log);
*/
MqttClient.prototype.subscribe = function () {
var packet
var args = Array.prototype.slice.call(arguments)
var subs = []
var obj = args.shift()
var resubscribe = obj.resubscribe
var callback = args.pop() || nop
var opts = args.pop()
var invalidTopic
var that = this
delete obj.resubscribe
if (typeof obj === 'string') {
obj = [obj]
}
if (typeof callback !== 'function') {
opts = callback
callback = nop
}
invalidTopic = validations.validateTopics(obj)
if (invalidTopic !== null) {
setImmediate(callback, new Error('Invalid topic ' + invalidTopic))
return this
}
if (this._checkDisconnecting(callback)) {
return this
}
var defaultOpts = { qos: 0 }
opts = xtend(defaultOpts, opts)
if (Array.isArray(obj)) {
obj.forEach(function (topic) {
if (that._resubscribeTopics[topic] < opts.qos ||
!that._resubscribeTopics.hasOwnProperty(topic) ||
resubscribe
) {
subs.push({
topic: topic,
qos: opts.qos
})
}
})
} else {
Object
.keys(obj)
.forEach(function (k) {
if (that._resubscribeTopics[k] < obj[k] ||
!that._resubscribeTopics.hasOwnProperty(k) ||
resubscribe
) {
subs.push({
topic: k,
qos: obj[k]
})
}
})
}
packet = {
cmd: 'subscribe',
subscriptions: subs,
qos: 1,
retain: false,
dup: false,
messageId: this._nextId()
}
if (!subs.length) {
callback(null, [])
return
}
// subscriptions to resubscribe to in case of disconnect
if (this.options.resubscribe) {
var topics = []
subs.forEach(function (sub) {
if (that.options.reconnectPeriod > 0) {
that._resubscribeTopics[sub.topic] = sub.qos
topics.push(sub.topic)
}
})
that.messageIdToTopic[packet.messageId] = topics
}
this.outgoing[packet.messageId] = function (err, packet) {
if (!err) {
var granted = packet.granted
for (var i = 0; i < granted.length; i += 1) {
subs[i].qos = granted[i]
}
}
callback(err, subs)
}
this._sendPacket(packet)
return this
}
/**
* unsubscribe - unsubscribe from topic(s)
*
* @param {String, Array} topic - topics to unsubscribe from
* @param {Function} [callback] - callback fired on unsuback
* @returns {MqttClient} this - for chaining
* @api public
* @example client.unsubscribe('topic');
* @example client.unsubscribe('topic', console.log);
*/
MqttClient.prototype.unsubscribe = function (topic, callback) {
var packet = {
cmd: 'unsubscribe',
qos: 1,
messageId: this._nextId()
}
var that = this
callback = callback || nop
if (this._checkDisconnecting(callback)) {
return this
}
if (typeof topic === 'string') {
packet.unsubscriptions = [topic]
} else if (typeof topic === 'object' && topic.length) {
packet.unsubscriptions = topic
}
if (this.options.resubscribe) {
packet.unsubscriptions.forEach(function (topic) {
delete that._resubscribeTopics[topic]
})
}
this.outgoing[packet.messageId] = callback
this._sendPacket(packet)
return this
}
/**
* end - close connection
*
* @returns {MqttClient} this - for chaining
* @param {Boolean} force - do not wait for all in-flight messages to be acked
* @param {Function} cb - called when the client has been closed
*
* @api public
*/
MqttClient.prototype.end = function (force, cb) {
var that = this
if (typeof force === 'function') {
cb = force
force = false
}
function closeStores () {
that.disconnected = true
that.incomingStore.close(function () {
that.outgoingStore.close(cb)
})
if (that._deferredReconnect) {
that._deferredReconnect()
}
}
function finish () {
// defer closesStores of an I/O cycle,
// just to make sure things are
// ok for websockets
that._cleanUp(force, setImmediate.bind(null, closeStores))
}
if (this.disconnecting) {
return this
}
this._clearReconnect()
this.disconnecting = true
if (!force && Object.keys(this.outgoing).length > 0) {
// wait 10ms, just to be sure we received all of it
this.once('outgoingEmpty', setTimeout.bind(null, finish, 10))
} else {
finish()
}
return this
}
/**
* removeOutgoingMessage - remove a message in outgoing store
* the outgoing callback will be called withe Error('Message removed') if the message is removed
*
* @param {Number} mid - messageId to remove message
* @returns {MqttClient} this - for chaining
* @api public
*
* @example client.removeOutgoingMessage(client.getLastMessageId());
*/
MqttClient.prototype.removeOutgoingMessage = function (mid) {
var cb = this.outgoing[mid]
delete this.outgoing[mid]
this.outgoingStore.del({messageId: mid}, function () {
cb(new Error('Message removed'))
})
return this
}
/**
* reconnect - connect again using the same options as connect()
*
* @param {Object} [opts] - optional reconnect options, includes:
* {Store} incomingStore - a store for the incoming packets
* {Store} outgoingStore - a store for the outgoing packets
* if opts is not given, current stores are used
* @returns {MqttClient} this - for chaining
*
* @api public
*/
MqttClient.prototype.reconnect = function (opts) {
var that = this
var f = function () {
if (opts) {
that.options.incomingStore = opts.incomingStore
that.options.outgoingStore = opts.outgoingStore
} else {
that.options.incomingStore = null
that.options.outgoingStore = null
}
that.incomingStore = that.options.incomingStore || new Store()
that.outgoingStore = that.options.outgoingStore || new Store()
that.disconnecting = false
that.disconnected = false
that._deferredReconnect = null
that._reconnect()
}
if (this.disconnecting && !this.disconnected) {
this._deferredReconnect = f
} else {
f()
}
return this
}
/**
* _reconnect - implement reconnection
* @api privateish
*/
MqttClient.prototype._reconnect = function () {
this.emit('reconnect')
this._setupStream()
}
/**
* _setupReconnect - setup reconnect timer
*/
MqttClient.prototype._setupReconnect = function () {
var that = this
if (!that.disconnecting && !that.reconnectTimer && (that.options.reconnectPeriod > 0)) {
if (!this.reconnecting) {
this.emit('offline')
this.reconnecting = true
}
that.reconnectTimer = setInterval(function () {
that._reconnect()
}, that.options.reconnectPeriod)
}
}
/**
* _clearReconnect - clear the reconnect timer
*/
MqttClient.prototype._clearReconnect = function () {
if (this.reconnectTimer) {
clearInterval(this.reconnectTimer)
this.reconnectTimer = null
}
}
/**
* _cleanUp - clean up on connection end
* @api private
*/
MqttClient.prototype._cleanUp = function (forced, done) {
if (done) {
this.stream.on('close', done)
}
if (forced) {
this.stream.destroy()
} else {
this._sendPacket(
{ cmd: 'disconnect' },
setImmediate.bind(
null,
this.stream.end.bind(this.stream)
)
)
}
if (!this.disconnecting) {
this._clearReconnect()
this._setupReconnect()
}
if (this.pingTimer !== null) {
this.pingTimer.clear()
this.pingTimer = null
}
}
/**
* _sendPacket - send or queue a packet
* @param {String} type - packet type (see `protocol`)
* @param {Object} packet - packet options
* @param {Function} cb - callback when the packet is sent
* @api private
*/
MqttClient.prototype._sendPacket = function (packet, cb) {
if (!this.connected) {
if (((packet.qos || 0) === 0 && this.queueQoSZero) || packet.cmd !== 'publish') {
this.queue.push({ packet: packet, cb: cb })
} else if (packet.qos > 0) {
this.outgoingStore.put(packet, function (err) {
if (err) {
return cb && cb(err)
}
})
} else if (cb) {
cb(new Error('No connection to broker'))
}
return
}
// When sending a packet, reschedule the ping timer
this._shiftPingInterval()
if (packet.cmd !== 'publish') {
sendPacket(this, packet, cb)
return
}
switch (packet.qos) {
case 2:
case 1:
storeAndSend(this, packet, cb)
break
/**
* no need of case here since it will be caught by default
* and jshint comply that before default it must be a break
* anyway it will result in -1 evaluation
*/
case 0:
/* falls through */
default:
sendPacket(this, packet, cb)
break
}
}
/**
* _setupPingTimer - setup the ping timer
*
* @api private
*/
MqttClient.prototype._setupPingTimer = function () {
var that = this
if (!this.pingTimer && this.options.keepalive) {
this.pingResp = true
this.pingTimer = reInterval(function () {
that._checkPing()
}, this.options.keepalive * 1000)
}
}
/**
* _shiftPingInterval - reschedule the ping interval
*
* @api private
*/
MqttClient.prototype._shiftPingInterval = function () {
if (this.pingTimer && this.options.keepalive && this.options.reschedulePings) {
this.pingTimer.reschedule(this.options.keepalive * 1000)
}
}
/**
* _checkPing - check if a pingresp has come back, and ping the server again
*
* @api private
*/
MqttClient.prototype._checkPing = function () {
if (this.pingResp) {
this.pingResp = false
this._sendPacket({ cmd: 'pingreq' })
} else {
// do a forced cleanup since socket will be in bad shape
this._cleanUp(true)
}
}
/**
* _handlePingresp - handle a pingresp
*
* @api private
*/
MqttClient.prototype._handlePingresp = function () {
this.pingResp = true
}
/**
* _handleConnack
*
* @param {Object} packet
* @api private
*/
MqttClient.prototype._handleConnack = function (packet) {
var rc = packet.returnCode
var errors = [
'',
'Unacceptable protocol version',
'Identifier rejected',
'Server unavailable',
'Bad username or password',
'Not authorized'
]
clearTimeout(this.connackTimer)
if (rc === 0) {
this.reconnecting = false
this.emit('connect', packet)
} else if (rc > 0) {
var err = new Error('Connection refused: ' + errors[rc])
err.code = rc
this.emit('error', err)
}
}
/**
* _handlePublish
*
* @param {Object} packet
* @api private
*/
/*
those late 2 case should be rewrite to comply with coding style:
case 1:
case 0:
// do not wait sending a puback
// no callback passed
if (1 === qos) {
this._sendPacket({
cmd: 'puback',
messageId: mid
});
}
// emit the message event for both qos 1 and 0
this.emit('message', topic, message, packet);
this.handleMessage(packet, done);
break;
default:
// do nothing but every switch mus have a default
// log or throw an error about unknown qos
break;
for now i just suppressed the warnings
*/
MqttClient.prototype._handlePublish = function (packet, done) {
var topic = packet.topic.toString()
var message = packet.payload
var qos = packet.qos
var mid = packet.messageId
var that = this
switch (qos) {
case 2:
this.incomingStore.put(packet, function () {
that._sendPacket({cmd: 'pubrec', messageId: mid}, done)
})
break
case 1:
// emit the message event
this.emit('message', topic, message, packet)
this.handleMessage(packet, function (err) {
if (err) {
return done && done(err)
}
// send 'puback' if the above 'handleMessage' method executed
// successfully.
that._sendPacket({cmd: 'puback', messageId: mid}, done)
})
break
case 0:
// emit the message event
this.emit('message', topic, message, packet)
this.handleMessage(packet, done)
break
default:
// do nothing
// log or throw an error about unknown qos
break
}
}
/**
* Handle messages with backpressure support, one at a time.
* Override at will.
*
* @param Packet packet the packet
* @param Function callback call when finished
* @api public
*/
MqttClient.prototype.handleMessage = function (packet, callback) {
callback()
}
/**
* _handleAck
*
* @param {Object} packet
* @api private
*/
MqttClient.prototype._handleAck = function (packet) {
/* eslint no-fallthrough: "off" */
var mid = packet.messageId
var type = packet.cmd
var response = null
var cb = this.outgoing[mid]
var that = this
if (!cb) {
// Server sent an ack in error, ignore it.
return
}
// Process
switch (type) {
case 'pubcomp':
// same thing as puback for QoS 2
case 'puback':
// Callback - we're done
delete this.outgoing[mid]
this.outgoingStore.del(packet, cb)
break
case 'pubrec':
response = {
cmd: 'pubrel',
qos: 2,
messageId: mid
}
this._sendPacket(response)
break
case 'suback':
delete this.outgoing[mid]
if (packet.granted.length === 1 && (packet.granted[0] & 0x80) !== 0) {
// suback with Failure status
var topics = this.messageIdToTopic[mid]
if (topics) {
topics.forEach(function (topic) {
delete that._resubscribeTopics[topic]
})
}
}
cb(null, packet)
break
case 'unsuback':
delete this.outgoing[mid]
cb(null)
break
default:
that.emit('error', new Error('unrecognized packet type'))
}
if (this.disconnecting &&
Object.keys(this.outgoing).length === 0) {
this.emit('outgoingEmpty')
}
}
/**
* _handlePubrel
*
* @param {Object} packet
* @api private
*/
MqttClient.prototype._handlePubrel = function (packet, callback) {
var mid = packet.messageId
var that = this
var comp = {cmd: 'pubcomp', messageId: mid}
that.incomingStore.get(packet, function (err, pub) {
if (!err && pub.cmd !== 'pubrel') {
that.emit('message', pub.topic, pub.payload, pub)
that.incomingStore.put(packet)
that.handleMessage(pub, function (err) {
if (err) {
return callback && callback(err)
}
that._sendPacket(comp, callback)
})
} else {
that._sendPacket(comp, callback)
}
})
}
/**
* _nextId
*/
MqttClient.prototype._nextId = function () {
var id = this.nextId++
// Ensure 16 bit unsigned int:
if (id === 65535) {
this.nextId = 1
}
return id
}
/**
* getLastMessageId
*/
MqttClient.prototype.getLastMessageId = function () {
return (this.nextId === 1) ? 65535 : (this.nextId - 1)
}
module.exports = MqttClient
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./store":6,"./validations":7,"_process":30,"end-of-stream":15,"events":16,"inherits":18,"mqtt-packet":23,"readable-stream":44,"reinterval":45,"xtend":58}],2:[function(require,module,exports){
'use strict'
var net = require('net')
/*
variables port and host can be removed since
you have all required information in opts object
*/
function buildBuilder (client, opts) {
var port, host
opts.port = opts.port || 1883
opts.hostname = opts.hostname || opts.host || 'localhost'
port = opts.port
host = opts.hostname
return net.createConnection(port, host)
}
module.exports = buildBuilder
},{"net":11}],3:[function(require,module,exports){
'use strict'
var tls = require('tls')
function buildBuilder (mqttClient, opts) {
var connection
opts.port = opts.port || 8883
opts.host = opts.hostname || opts.host || 'localhost'
opts.rejectUnauthorized = opts.rejectUnauthorized !== false
delete opts.path
connection = tls.connect(opts)
/* eslint no-use-before-define: [2, "nofunc"] */
connection.on('secureConnect', function () {
if (opts.rejectUnauthorized && !connection.authorized) {
connection.emit('error', new Error('TLS not authorized'))
} else {
connection.removeListener('error', handleTLSerrors)
}
})
function handleTLSerrors (err) {
// How can I get verify this error is a tls error?
if (opts.rejectUnauthorized) {
mqttClient.emit('error', err)
}
// close this connection to match the behaviour of net
// otherwise all we get is an error from the connection
// and close event doesn't fire. This is a work around
// to enable the reconnect code to work the same as with
// net.createConnection
connection.end()
}
connection.on('error', handleTLSerrors)
return connection
}
module.exports = buildBuilder
},{"tls":11}],4:[function(require,module,exports){
(function (process){
'use strict'
var websocket = require('websocket-stream')
var urlModule = require('url')
var WSS_OPTIONS = [
'rejectUnauthorized',
'ca',
'cert',
'key',
'pfx',
'passphrase'
]
var IS_BROWSER = process.title === 'browser'
function buildUrl (opts, client) {
var url = opts.protocol + '://' + opts.hostname + ':' + opts.port + opts.path
if (typeof (opts.transformWsUrl) === 'function') {
url = opts.transformWsUrl(url, opts, client)
}
return url
}
function setDefaultOpts (opts) {
if (!opts.hostname) {
opts.hostname = 'localhost'
}
if (!opts.port) {
if (opts.protocol === 'wss') {
opts.port = 443
} else {
opts.port = 80
}
}
if (!opts.path) {
opts.path = '/'
}
if (!opts.wsOptions) {
opts.wsOptions = {}
}
if (!IS_BROWSER && opts.protocol === 'wss') {
// Add cert/key/ca etc options
WSS_OPTIONS.forEach(function (prop) {
if (opts.hasOwnProperty(prop) && !opts.wsOptions.hasOwnProperty(prop)) {
opts.wsOptions[prop] = opts[prop]
}
})
}
}
function createWebSocket (client, opts) {
var websocketSubProtocol =
(opts.protocolId === 'MQIsdp') && (opts.protocolVersion === 3)
? 'mqttv3.1'
: 'mqtt'
setDefaultOpts(opts)
var url = buildUrl(opts, client)
return websocket(url, [websocketSubProtocol], opts.wsOptions)
}
function buildBuilder (client, opts) {
return createWebSocket(client, opts)
}
function buildBuilderBrowser (client, opts) {
if (!opts.hostname) {
opts.hostname = opts.host
}
if (!opts.hostname) {
// Throwing an error in a Web Worker if no `hostname` is given, because we
// can not determine the `hostname` automatically. If connecting to
// localhost, please supply the `hostname` as an argument.
if (typeof (document) === 'undefined') {
throw new Error('Could not determine host. Specify host manually.')
}
var parsed = urlModule.parse(document.URL)
opts.hostname = parsed.hostname
if (!opts.port) {
opts.port = parsed.port
}
}
return createWebSocket(client, opts)
}
if (IS_BROWSER) {
module.exports = buildBuilderBrowser
} else {
module.exports = buildBuilder
}
}).call(this,require('_process'))
},{"_process":30,"url":49,"websocket-stream":55}],5:[function(require,module,exports){
'use strict'
/* global wx */
var socketOpen = false
var socketMsgQueue = []
function sendSocketMessage (msg) {
if (socketOpen) {
wx.sendSocketMessage({
data: msg
})
} else {
socketMsgQueue.push(msg)
}
}
function WebSocket (url, protocols) {
var ws = {
OPEN: 1,
CLOSING: 2,
CLOSED: 3,
readyState: socketOpen ? 1 : 0,
send: sendSocketMessage,
close: wx.closeSocket,
onopen: null,
onmessage: null,
onclose: null,
onerror: null
}
wx.connectSocket({
url: url,
protocols: protocols
})
wx.onSocketOpen(function (res) {
ws.readyState = ws.OPEN
socketOpen = true
for (var i = 0; i < socketMsgQueue.length; i++) {
sendSocketMessage(socketMsgQueue[i])
}
socketMsgQueue = []
ws.onopen && ws.onopen.apply(ws, arguments)
})
wx.onSocketMessage(function (res) {
ws.onmessage && ws.onmessage.apply(ws, arguments)
})
wx.onSocketClose(function () {
ws.onclose && ws.onclose.apply(ws, arguments)
ws.readyState = ws.CLOSED
socketOpen = false
})
wx.onSocketError(function () {
ws.onerror && ws.onerror.apply(ws, arguments)
ws.readyState = ws.CLOSED
socketOpen = false
})
return ws
}
var websocket = require('websocket-stream')
var urlModule = require('url')
function buildUrl (opts, client) {
var protocol = opts.protocol === 'wxs' ? 'wss' : 'ws'
var url = protocol + '://' + opts.hostname + ':' + opts.port + opts.path
if (typeof (opts.transformWsUrl) === 'function') {
url = opts.transformWsUrl(url, opts, client)
}
return url
}
function setDefaultOpts (opts) {
if (!opts.hostname) {
opts.hostname = 'localhost'
}
if (!opts.port) {
if (opts.protocol === 'wss') {
opts.port = 443
} else {
opts.port = 80
}
}
if (!opts.path) {
opts.path = '/'
}
if (!opts.wsOptions) {
opts.wsOptions = {}
}
}
function createWebSocket (client, opts) {
var websocketSubProtocol =
(opts.protocolId === 'MQIsdp') && (opts.protocolVersion === 3)
? 'mqttv3.1'
: 'mqtt'
setDefaultOpts(opts)
var url = buildUrl(opts, client)
return websocket(WebSocket(url, [websocketSubProtocol]))
}
function buildBuilder (client, opts) {
if (!opts.hostname) {
opts.hostname = opts.host
}
if (!opts.hostname) {
// Throwing an error in a Web Worker if no `hostname` is given, because we
// can not determine the `hostname` automatically. If connecting to
// localhost, please supply the `hostname` as an argument.
if (typeof (document) === 'undefined') {
throw new Error('Could not determine host. Specify host manually.')
}
var parsed = urlModule.parse(document.URL)
opts.hostname = parsed.hostname
if (!opts.port) {
opts.port = parsed.port
}
}
return createWebSocket(client, opts)
}
module.exports = buildBuilder
},{"url":49,"websocket-stream":55}],6:[function(require,module,exports){
(function (process){
'use strict'
/**
* Module dependencies
*/
var xtend = require('xtend')
var Readable = require('readable-stream').Readable
var streamsOpts = { objectMode: true }
var defaultStoreOptions = {
clean: true
}
/**
* In-memory implementation of the message store
* This can actually be saved into files.
*
* @param {Object} [options] - store options
*/
function Store (options) {
if (!(this instanceof Store)) {
return new Store(options)
}
this.options = options || {}
// Defaults
this.options = xtend(defaultStoreOptions, options)
this._inflights = {}
}
/**
* Adds a packet to the store, a packet is
* anything that has a messageId property.
*
*/
Store.prototype.put = function (packet, cb) {
this._inflights[packet.messageId] = packet
if (cb) {
cb()
}
return this
}
/**
* Creates a stream with all the packets in the store
*
*/
Store.prototype.createStream = function () {
var stream = new Readable(streamsOpts)
var inflights = this._inflights
var ids = Object.keys(this._inflights)
var destroyed = false
var i = 0
stream._read = function () {
if (!destroyed && i < ids.length) {
this.push(inflights[ids[i++]])
} else {
this.push(null)
}
}
stream.destroy = function () {
if (destroyed) {
return
}
var self = this
destroyed = true
process.nextTick(function () {
self.emit('close')
})
}
return stream
}
/**
* deletes a packet from the store.
*/
Store.prototype.del = function (packet, cb) {
packet = this._inflights[packet.messageId]
if (packet) {
delete this._inflights[packet.messageId]
cb(null, packet)
} else if (cb) {
cb(new Error('missing packet'))
}
return this
}
/**
* get a packet from the store.
*/
Store.prototype.get = function (packet, cb) {
packet = this._inflights[packet.messageId]
if (packet) {
cb(null, packet)
} else if (cb) {
cb(new Error('missing packet'))
}
return this
}
/**
* Close the store
*/
Store.prototype.close = function (cb) {
if (this.options.clean) {
this._inflights = null
}
if (cb) {
cb()
}
}
module.exports = Store
}).call(this,require('_process'))
},{"_process":30,"readable-stream":44,"xtend":58}],7:[function(require,module,exports){
'use strict'
/**
* Validate a topic to see if it's valid or not.
* A topic is valid if it follow below rules:
* - Rule #1: If any part of the topic is not `+` or `#`, then it must not contain `+` and '#'
* - Rule #2: Part `#` must be located at the end of the mailbox
*
* @param {String} topic - A topic
* @returns {Boolean} If the topic is valid, returns true. Otherwise, returns false.
*/
function validateTopic (topic) {
var parts = topic.split('/')
for (var i = 0; i < parts.length; i++) {
if (parts[i] === '+') {
continue
}
if (parts[i] === '#') {
// for Rule #2
return i === parts.length - 1
}
if (parts[i].indexOf('+') !== -1 || parts[i].indexOf('#') !== -1) {
return false
}
}
return true
}
/**
* Validate an array of topics to see if any of them is valid or not
* @param {Array} topics - Array of topics
* @returns {String} If the topics is valid, returns null. Otherwise, returns the invalid one
*/
function validateTopics (topics) {
if (topics.length === 0) {
return 'empty_topic_list'
}
for (var i = 0; i < topics.length; i++) {
if (!validateTopic(topics[i])) {
return topics[i]
}
}
return null
}
module.exports = {
validateTopics: validateTopics
}
},{}],8:[function(require,module,exports){
(function (process){
'use strict'
var MqttClient = require('../client')
var Store = require('../store')
var url = require('url')
var xtend = require('xtend')
var protocols = {}
if (process.title !== 'browser') {
protocols.mqtt = require('./tcp')
protocols.tcp = require('./tcp')
protocols.ssl = require('./tls')
protocols.tls = require('./tls')
protocols.mqtts = require('./tls')
} else {
protocols.wx = require('./wx')
protocols.wxs = require('./wx')
}
protocols.ws = require('./ws')
protocols.wss = require('./ws')
/**
* Parse the auth attribute and merge username and password in the options object.
*
* @param {Object} [opts] option object
*/
function parseAuthOptions (opts) {
var matches
if (opts.auth) {
matches = opts.auth.match(/^(.+):(.+)$/)
if (matches) {
opts.username = matches[1]
opts.password = matches[2]
} else {
opts.username = opts.auth
}
}
}
/**
* connect - connect to an MQTT broker.
*
* @param {String} [brokerUrl] - url of the broker, optional
* @param {Object} opts - see MqttClient#constructor
*/
function connect (brokerUrl, opts) {
if ((typeof brokerUrl === 'object') && !opts) {
opts = brokerUrl
brokerUrl = null
}
opts = opts || {}
if (brokerUrl) {
var parsed = url.parse(brokerUrl, true)
if (parsed.port != null) {
parsed.port = Number(parsed.port)
}
opts = xtend(parsed, opts)
if (opts.protocol === null) {
throw new Error('Missing protocol')
}
opts.protocol = opts.protocol.replace(/:$/, '')
}
// merge in the auth options if supplied
parseAuthOptions(opts)
// support clientId passed in the query string of the url
if (opts.query && typeof opts.query.clientId === 'string') {
opts.clientId = opts.query.clientId
}
if (opts.cert && opts.key) {
if (opts.protocol) {
if (['mqtts', 'wss', 'wxs'].indexOf(opts.protocol) === -1) {
switch (opts.protocol) {
case 'mqtt':
opts.protocol = 'mqtts'
break
case 'ws':
opts.protocol = 'wss'
break
case 'wx':
opts.protocol = 'wxs'
break
default:
throw new Error('Unknown protocol for secure connection: "' + opts.protocol + '"!')
}
}
} else {
// don't know what protocol he want to use, mqtts or wss
throw new Error('Missing secure protocol key')
}
}
if (!protocols[opts.protocol]) {
var isSecure = ['mqtts', 'wss'].indexOf(opts.protocol) !== -1
opts.protocol = [
'mqtt',
'mqtts',
'ws',
'wss',
'wx',
'wxs'
].filter(function (key, index) {
if (isSecure && index % 2 === 0) {
// Skip insecure protocols when requesting a secure one.
return false
}
return (typeof protocols[key] === 'function')
})[0]
}
if (opts.clean === false && !opts.clientId) {
throw new Error('Missing clientId for unclean clients')
}
function wrapper (client) {
if (opts.servers) {
if (!client._reconnectCount || client._reconnectCount === opts.servers.length) {
client._reconnectCount = 0
}
opts.host = opts.servers[client._reconnectCount].host
opts.port = opts.servers[client._reconnectCount].port
opts.hostname = opts.host
client._reconnectCount++
}
return protocols[opts.protocol](client, opts)
}
return new MqttClient(wrapper, opts)
}
module.exports = connect
module.exports.connect = connect
module.exports.MqttClient = MqttClient
module.exports.Store = Store
}).call(this,require('_process'))
},{"../client":1,"../store":6,"./tcp":2,"./tls":3,"./ws":4,"./wx":5,"_process":30,"url":49,"xtend":58}],9:[function(require,module,exports){
'use strict'
exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray
var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
lookup[i] = code[i]
revLookup[code.charCodeAt(i)] = i
}
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63
function placeHoldersCount (b64) {
var len = b64.length
if (len % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// the number of equal signs (place holders)
// if there are two placeholders, than the two characters before it
// represent one byte
// if there is only one, then the three characters before it represent 2 bytes
// this is just a cheap hack to not do indexOf twice
return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
}
function byteLength (b64) {
// base64 is 4/3 + up to two characters of the original data
return (b64.length * 3 / 4) - placeHoldersCount(b64)
}
function toByteArray (b64) {
var i, l, tmp, placeHolders, arr
var len = b64.length
placeHolders = placeHoldersCount(b64)
arr = new Arr((len * 3 / 4) - placeHolders)
// if there are placeholders, only get up to the last complete 4 chars
l = placeHolders > 0 ? len - 4 : len
var L = 0
for (i = 0; i < l; i += 4) {
tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
arr[L++] = (tmp >> 16) & 0xFF
arr[L++] = (tmp >> 8) & 0xFF
arr[L++] = tmp & 0xFF
}
if (placeHolders === 2) {
tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
arr[L++] = tmp & 0xFF
} else if (placeHolders === 1) {
tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
arr[L++] = (tmp >> 8) & 0xFF
arr[L++] = tmp & 0xFF
}
return arr
}
function tripletToBase64 (num) {
return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
}
function encodeChunk (uint8, start, end) {
var tmp
var output = []
for (var i = start; i < end; i += 3) {
tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
output.push(tripletToBase64(tmp))
}
return output.join('')
}
function fromByteArray (uint8) {
var tmp
var len = uint8.length
var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
var output = ''
var parts = []
var maxChunkLength = 16383 // must be multiple of 3
// go through the array every three bytes, we'll deal with trailing stuff later
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
}
// pad the end with zeros, but make sure to not forget the extra bytes
if (extraBytes === 1) {
tmp = uint8[len - 1]
output += lookup[tmp >> 2]
output += lookup[(tmp << 4) & 0x3F]
output += '=='
} else if (extraBytes === 2) {
tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
output += lookup[tmp >> 10]
output += lookup[(tmp >> 4) & 0x3F]
output += lookup[(tmp << 2) & 0x3F]
output += '='
}
parts.push(output)
return parts.join('')
}
},{}],10:[function(require,module,exports){
(function (Buffer){
var DuplexStream = require('readable-stream/duplex')
, util = require('util')
function BufferList (callback) {
if (!(this instanceof BufferList))
return new BufferList(callback)
this._bufs = []
this.length = 0
if (typeof callback == 'function') {
this._callback = callback
var piper = function piper (err) {
if (this._callback) {
this._callback(err)
this._callback = null
}
}.bind(this)
this.on('pipe', function onPipe (src) {
src.on('error', piper)
})
this.on('unpipe', function onUnpipe (src) {
src.removeListener('error', piper)
})
} else {
this.append(callback)
}
DuplexStream.call(this)
}
util.inherits(BufferList, DuplexStream)
BufferList.prototype._offset = function _offset (offset) {
var tot = 0, i = 0, _t
if (offset === 0) return [ 0, 0 ]
for (; i < this._bufs.length; i++) {
_t = tot + this._bufs[i].length
if (offset < _t || i == this._bufs.length - 1)
return [ i, offset - tot ]
tot = _t
}
}
BufferList.prototype.append = function append (buf) {
var i = 0
if (Buffer.isBuffer(buf)) {
this._appendBuffer(buf);
} else if (Array.isArray(buf)) {
for (; i < buf.length; i++)
this.append(buf[i])
} else if (buf instanceof BufferList) {
// unwrap argument into individual BufferLists
for (; i < buf._bufs.length; i++)
this.append(buf._bufs[i])
} else if (buf != null) {
// coerce number arguments to strings, since Buffer(number) does
// uninitialized memory allocation
if (typeof buf == 'number')
buf = buf.toString()
this._appendBuffer(new Buffer(buf));
}
return this
}
BufferList.prototype._appendBuffer = function appendBuffer (buf) {
this._bufs.push(buf)
this.length += buf.length
}
BufferList.prototype._write = function _write (buf, encoding, callback) {
this._appendBuffer(buf)
if (typeof callback == 'function')
callback()
}
BufferList.prototype._read = function _read (size) {
if (!this.length)
return this.push(null)
size = Math.min(size, this.length)
this.push(this.slice(0, size))
this.consume(size)
}
BufferList.prototype.end = function end (chunk) {
DuplexStream.prototype.end.call(this, chunk)
if (this._callback) {
this._callback(null, this.slice())
this._callback = null
}
}
BufferList.prototype.get = function get (index) {
return this.slice(index, index + 1)[0]
}
BufferList.prototype.slice = function slice (start, end) {
if (typeof start == 'number' && start < 0)
start += this.length
if (typeof end == 'number' && end < 0)
end += this.length
return this.copy(null, 0, start, end)
}
BufferList.prototype.copy = function copy (dst, dstStart, srcStart, srcEnd) {
if (typeof srcStart != 'number' || srcStart < 0)
srcStart = 0
if (typeof srcEnd != 'number' || srcEnd > this.length)
srcEnd = this.length
if (srcStart >= this.length)
return dst || new Buffer(0)
if (srcEnd <= 0)
return dst || new Buffer(0)
var copy = !!dst
, off = this._offset(srcStart)
, len = srcEnd - srcStart
, bytes = len
, bufoff = (copy && dstStart) || 0
, start = off[1]
, l
, i
// copy/slice everything
if (srcStart === 0 && srcEnd == this.length) {
if (!copy) { // slice, but full concat if multiple buffers
return this._bufs.length === 1
? this._bufs[0]
: Buffer.concat(this._bufs, this.length)
}
// copy, need to copy individual buffers
for (i = 0; i < this._bufs.length; i++) {
this._bufs[i].copy(dst, bufoff)
bufoff += this._bufs[i].length
}
return dst
}
// easy, cheap case where it's a subset of one of the buffers
if (bytes <= this._bufs[off[0]].length - start) {
return copy
? this._bufs[off[0]].copy(dst, dstStart, start, start + bytes)
: this._bufs[off[0]].slice(start, start + bytes)
}
if (!copy) // a slice, we need something to copy in to
dst = new Buffer(len)
for (i = off[0]; i < this._bufs.length; i++) {
l = this._bufs[i].length - start
if (bytes > l) {
this._bufs[i].copy(dst, bufoff, start)
} else {
this._bufs[i].copy(dst, bufoff, start, start + bytes)
break
}
bufoff += l
bytes -= l
if (start)
start = 0
}
return dst
}
BufferList.prototype.shallowSlice = function shallowSlice (start, end) {
start = start || 0
end = end || this.length
if (start < 0)
start += this.length
if (end < 0)
end += this.length
var startOffset = this._offset(start)
, endOffset = this._offset(end)
, buffers = this._bufs.slice(startOffset[0], endOffset[0] + 1)
if (endOffset[1] == 0)
buffers.pop()
else
buffers[buffers.length-1] = buffers[buffers.length-1].slice(0, endOffset[1])
if (startOffset[1] != 0)
buffers[0] = buffers[0].slice(startOffset[1])
return new BufferList(buffers)
}
BufferList.prototype.toString = function toString (encoding, start, end) {
return this.slice(start, end).toString(encoding)
}
BufferList.prototype.consume = function consume (bytes) {
while (this._bufs.length) {
if (bytes >= this._bufs[0].length) {
bytes -= this._bufs[0].length
this.length -= this._bufs[0].length
this._bufs.shift()
} else {
this._bufs[0] = this._bufs[0].slice(bytes)
this.length -= bytes
break
}
}
return this
}
BufferList.prototype.duplicate = function duplicate () {
var i = 0
, copy = new BufferList()
for (; i < this._bufs.length; i++)
copy.append(this._bufs[i])
return copy
}
BufferList.prototype.destroy = function destroy () {
this._bufs.length = 0
this.length = 0
this.push(null)
}
;(function () {
var methods = {
'readDoubleBE' : 8
, 'readDoubleLE' : 8
, 'readFloatBE' : 4
, 'readFloatLE' : 4
, 'readInt32BE' : 4
, 'readInt32LE' : 4
, 'readUInt32BE' : 4
, 'readUInt32LE' : 4
, 'readInt16BE' : 2
, 'readInt16LE' : 2
, 'readUInt16BE' : 2
, 'readUInt16LE' : 2
, 'readInt8' : 1
, 'readUInt8' : 1
}
for (var m in methods) {
(function (m) {
BufferList.prototype[m] = function (offset) {
return this.slice(offset, offset + methods[m])[m](0)
}
}(m))
}
}())
module.exports = BufferList
}).call(this,require("buffer").Buffer)
},{"buffer":12,"readable-stream/duplex":35,"util":54}],11:[function(require,module,exports){
},{}],12:[function(require,module,exports){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh
* @license MIT
*/
/* eslint-disable no-proto */
'use strict'
var base64 = require('base64-js')
var ieee754 = require('ieee754')
exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Print warning and recommend using `buffer` v4.x which has an Object
* implementation (most compatible, even IE6)
*
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
* Opera 11.6+, iOS 4.2+.
*
* We report that the browser does not support typed arrays if the are not subclassable
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
* for __proto__ and has a buggy typed array implementation.
*/
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
typeof console.error === 'function') {
console.error(
'This browser lacks typed array (Uint8Array) support which is required by ' +
'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
)
}
function typedArraySupport () {
// Can typed array instances can be augmented?
try {
var arr = new Uint8Array(1)
arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
return arr.foo() === 42
} catch (e) {
return false
}
}
function createBuffer (length) {
if (length > K_MAX_LENGTH) {
throw new RangeError('Invalid typed array length')
}
// Return an augmented `Uint8Array` instance
var buf = new Uint8Array(length)
buf.__proto__ = Buffer.prototype
return buf
}
/**
* The Buffer constructor returns instances of `Uint8Array` that have their
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
* returns a single octet.
*
* The `Uint8Array` prototype remains unmodified.
*/
function Buffer (arg, encodingOrOffset, length) {
// Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new Error(
'If encoding is specified then the first argument must be a string'
)
}
return allocUnsafe(arg)
}
return from(arg, encodingOrOffset, length)
}
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species &&
Buffer[Symbol.species] === Buffer) {
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true,
enumerable: false,
writable: false
})
}
Buffer.poolSize = 8192 // not used by this implementation
function from (value, encodingOrOffset, length) {
if (typeof value === 'number') {
throw new TypeError('"value" argument must not be a number')
}
if (isArrayBuffer(value)) {
return fromArrayBuffer(value, encodingOrOffset, length)
}
if (typeof value === 'string') {
return fromString(value, encodingOrOffset)
}
return fromObject(value)
}
/**
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
* if value is a number.
* Buffer.from(str[, encoding])
* Buffer.from(array)
* Buffer.from(buffer)
* Buffer.from(arrayBuffer[, byteOffset[, length]])
**/
Buffer.from = function (value, encodingOrOffset, length) {
return from(value, encodingOrOffset, length)
}
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array
function assertSize (size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be a number')
} else if (size < 0) {
throw new RangeError('"size" argument must not be negative')
}
}
function alloc (size, fill, encoding) {
assertSize(size)
if (size <= 0) {
return createBuffer(size)
}
if (fill !== undefined) {
// Only pay attention to encoding if it's a string. This
// prevents accidentally sending in a number that would
// be interpretted as a start offset.
return typeof encoding === 'string'
? createBuffer(size).fill(fill, encoding)
: createBuffer(size).fill(fill)
}
return createBuffer(size)
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(size, fill, encoding)
}
function allocUnsafe (size) {
assertSize(size)
return createBuffer(size < 0 ? 0 : checked(size) | 0)
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(size)
}
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(size)
}
function fromString (string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8'
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('"encoding" must be a valid string encoding')
}
var length = byteLength(string, encoding) | 0
var buf = createBuffer(length)
var actual = buf.write(string, encoding)
if (actual !== length) {
// Writing a hex string, for example, that contains invalid characters will
// cause everything after the first invalid character to be ignored. (e.g.
// 'abxxcd' will be treated as 'ab')
buf = buf.slice(0, actual)
}
return buf
}
function fromArrayLike (array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0
var buf = createBuffer(length)
for (var i = 0; i < length; i += 1) {
buf[i] = array[i] & 255
}
return buf
}
function fromArrayBuffer (array, byteOffset, length) {
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('\'offset\' is out of bounds')
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('\'length\' is out of bounds')
}
var buf
if (byteOffset === undefined && length === undefined) {
buf = new Uint8Array(array)
} else if (length === undefined) {
buf = new Uint8Array(array, byteOffset)
} else {
buf = new Uint8Array(array, byteOffset, length)
}
// Return an augmented `Uint8Array` instance
buf.__proto__ = Buffer.prototype
return buf
}
function fromObject (obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0
var buf = createBuffer(len)
if (buf.length === 0) {
return buf
}
obj.copy(buf, 0, 0, len)
return buf
}
if (obj) {
if (isArrayBufferView(obj) || 'length' in obj) {
if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
return createBuffer(0)
}
return fromArrayLike(obj)
}
if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
return fromArrayLike(obj.data)
}
}
throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}
function checked (length) {
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= K_MAX_LENGTH) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
}
return length | 0
}
function SlowBuffer (length) {
if (+length != length) { // eslint-disable-line eqeqeq
length = 0
}
return Buffer.alloc(+length)
}
Buffer.isBuffer = function isBuffer (b) {
return b != null && b._isBuffer === true
}
Buffer.compare = function compare (a, b) {
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError('Arguments must be Buffers')
}
if (a === b) return 0
var x = a.length
var y = b.length
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i]
y = b[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
Buffer.isEncoding = function isEncoding (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'latin1':
case 'binary':
case 'base64':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.concat = function concat (list, length) {
if (!Array.isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
if (list.length === 0) {
return Buffer.alloc(0)
}
var i
if (length === undefined) {
length = 0
for (i = 0; i < list.length; ++i) {
length += list[i].length
}
}
var buffer = Buffer.allocUnsafe(length)
var pos = 0
for (i = 0; i < list.length; ++i) {
var buf = list[i]
if (!Buffer.isBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
buf.copy(buffer, pos)
pos += buf.length
}
return buffer
}
function byteLength (string, encoding) {
if (Buffer.isBuffer(string)) {
return string.length
}
if (isArrayBufferView(string) || isArrayBuffer(string)) {
return string.byteLength
}
if (typeof string !== 'string') {
string = '' + string
}
var len = string.length
if (len === 0) return 0
// Use a for loop to avoid recursion
var loweredCase = false
for (;;) {
switch (encoding) {
case 'ascii':
case 'latin1':
case 'binary':
return len
case 'utf8':
case 'utf-8':
case undefined:
return utf8ToBytes(string).length
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return len * 2
case 'hex':
return len >>> 1
case 'base64':
return base64ToBytes(string).length
default:
if (loweredCase) return utf8ToBytes(string).length // assume utf8
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.byteLength = byteLength
function slowToString (encoding, start, end) {
var loweredCase = false
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
// property of a typed array.
// This behaves neither like String nor Uint8Array in that we set start/end
// to their upper/lower bounds if the value passed is out of range.
// undefined is handled specially as per ECMA-262 6th Edition,
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
if (start === undefined || start < 0) {
start = 0
}
// Return early if start > this.length. Done here to prevent potential uint32
// coercion fail below.
if (start > this.length) {
return ''
}
if (end === undefined || end > this.length) {
end = this.length
}
if (end <= 0) {
return ''
}
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
end >>>= 0
start >>>= 0
if (end <= start) {
return ''
}
if (!encoding) encoding = 'utf8'
while (true) {
switch (encoding) {
case 'hex':
return hexSlice(this, start, end)
case 'utf8':
case 'utf-8':
return utf8Slice(this, start, end)
case 'ascii':
return asciiSlice(this, start, end)
case 'latin1':
case 'binary':
return latin1Slice(this, start, end)
case 'base64':
return base64Slice(this, start, end)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return utf16leSlice(this, start, end)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = (encoding + '').toLowerCase()
loweredCase = true
}
}
}
// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true
function swap (b, n, m) {
var i = b[n]
b[n] = b[m]
b[m] = i
}
Buffer.prototype.swap16 = function swap16 () {
var len = this.length
if (len % 2 !== 0) {
throw new RangeError('Buffer size must be a multiple of 16-bits')
}
for (var i = 0; i < len; i += 2) {
swap(this, i, i + 1)
}
return this
}
Buffer.prototype.swap32 = function swap32 () {
var len = this.length
if (len % 4 !== 0) {
throw new RangeError('Buffer size must be a multiple of 32-bits')
}
for (var i = 0; i < len; i += 4) {
swap(this, i, i + 3)
swap(this, i + 1, i + 2)
}
return this
}
Buffer.prototype.swap64 = function swap64 () {
var len = this.length
if (len % 8 !== 0) {
throw new RangeError('Buffer size must be a multiple of 64-bits')
}
for (var i = 0; i < len; i += 8) {
swap(this, i, i + 7)
swap(this, i + 1, i + 6)
swap(this, i + 2, i + 5)
swap(this, i + 3, i + 4)
}
return this
}
Buffer.prototype.toString = function toString () {
var length = this.length
if (length === 0) return ''
if (arguments.length === 0) return utf8Slice(this, 0, length)
return slowToString.apply(this, arguments)
}
Buffer.prototype.equals = function equals (b) {
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
if (this === b) return true
return Buffer.compare(this, b) === 0
}
Buffer.prototype.inspect = function inspect () {
var str = ''
var max = exports.INSPECT_MAX_BYTES
if (this.length > 0) {
str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
if (this.length > max) str += ' ... '
}
return ''
}
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
if (!Buffer.isBuffer(target)) {
throw new TypeError('Argument must be a Buffer')
}
if (start === undefined) {
start = 0
}
if (end === undefined) {
end = target ? target.length : 0
}
if (thisStart === undefined) {
thisStart = 0
}
if (thisEnd === undefined) {
thisEnd = this.length
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError('out of range index')
}
if (thisStart >= thisEnd && start >= end) {
return 0
}
if (thisStart >= thisEnd) {
return -1
}
if (start >= end) {
return 1
}
start >>>= 0
end >>>= 0
thisStart >>>= 0
thisEnd >>>= 0
if (this === target) return 0
var x = thisEnd - thisStart
var y = end - start
var len = Math.min(x, y)
var thisCopy = this.slice(thisStart, thisEnd)
var targetCopy = target.slice(start, end)
for (var i = 0; i < len; ++i) {
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i]
y = targetCopy[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
// Empty buffer means no match
if (buffer.length === 0) return -1
// Normalize byteOffset
if (typeof byteOffset === 'string') {
encoding = byteOffset
byteOffset = 0
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff
} else if (byteOffset < -0x80000000) {
byteOffset = -0x80000000
}
byteOffset = +byteOffset // Coerce to Number.
if (numberIsNaN(byteOffset)) {
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
byteOffset = dir ? 0 : (buffer.length - 1)
}
// Normalize byteOffset: negative offsets start from the end of the buffer
if (byteOffset < 0) byteOffset = buffer.length + byteOffset
if (byteOffset >= buffer.length) {
if (dir) return -1
else byteOffset = buffer.length - 1
} else if (byteOffset < 0) {
if (dir) byteOffset = 0
else return -1
}
// Normalize val
if (typeof val === 'string') {
val = Buffer.from(val, encoding)
}
// Finally, search either indexOf (if dir is true) or lastIndexOf
if (Buffer.isBuffer(val)) {
// Special case: looking for empty string/buffer always fails
if (val.length === 0) {
return -1
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
} else if (typeof val === 'number') {
val = val & 0xFF // Search for a byte value [0-255]
if (typeof Uint8Array.prototype.indexOf === 'function') {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
}
}
return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
}
throw new TypeError('val must be string, number or Buffer')
}
function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
var indexSize = 1
var arrLength = arr.length
var valLength = val.length
if (encoding !== undefined) {
encoding = String(encoding).toLowerCase()
if (encoding === 'ucs2' || encoding === 'ucs-2' ||
encoding === 'utf16le' || encoding === 'utf-16le') {
if (arr.length < 2 || val.length < 2) {
return -1
}
indexSize = 2
arrLength /= 2
valLength /= 2
byteOffset /= 2
}
}
function read (buf, i) {
if (indexSize === 1) {
return buf[i]
} else {
return buf.readUInt16BE(i * indexSize)
}
}
var i
if (dir) {
var foundIndex = -1
for (i = byteOffset; i < arrLength; i++) {
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
} else {
if (foundIndex !== -1) i -= i - foundIndex
foundIndex = -1
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
for (i = byteOffset; i >= 0; i--) {
var found = true
for (var j = 0; j < valLength; j++) {
if (read(arr, i + j) !== read(val, j)) {
found = false
break
}
}
if (found) return i
}
}
return -1
}
Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1
}
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}
function hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0
var remaining = buf.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
// must be an even number of digits
var strLen = string.length
if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16)
if (numberIsNaN(parsed)) return i
buf[offset + i] = parsed
}
return i
}
function utf8Write (buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}
function asciiWrite (buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length)
}
function latin1Write (buf, string, offset, length) {
return asciiWrite(buf, string, offset, length)
}
function base64Write (buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length)
}
function ucs2Write (buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}
Buffer.prototype.write = function write (string, offset, length, encoding) {
// Buffer#write(string)
if (offset === undefined) {
encoding = 'utf8'
length = this.length
offset = 0
// Buffer#write(string, encoding)
} else if (length === undefined && typeof offset === 'string') {
encoding = offset
length = this.length
offset = 0
// Buffer#write(string, offset[, length][, encoding])
} else if (isFinite(offset)) {
offset = offset >>> 0
if (isFinite(length)) {
length = length >>> 0
if (encoding === undefined) encoding = 'utf8'
} else {
encoding = length
length = undefined
}
} else {
throw new Error(
'Buffer.write(string, encoding, offset[, length]) is no longer supported'
)
}
var remaining = this.length - offset
if (length === undefined || length > remaining) length = remaining
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
throw new RangeError('Attempt to write outside buffer bounds')
}
if (!encoding) encoding = 'utf8'
var loweredCase = false
for (;;) {
switch (encoding) {
case 'hex':
return hexWrite(this, string, offset, length)
case 'utf8':
case 'utf-8':
return utf8Write(this, string, offset, length)
case 'ascii':
return asciiWrite(this, string, offset, length)
case 'latin1':
case 'binary':
return latin1Write(this, string, offset, length)
case 'base64':
// Warning: maxLength not taken into account in base64Write
return base64Write(this, string, offset, length)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return ucs2Write(this, string, offset, length)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.prototype.toJSON = function toJSON () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
function base64Slice (buf, start, end) {
if (start === 0 && end === buf.length) {
return base64.fromByteArray(buf)
} else {
return base64.fromByteArray(buf.slice(start, end))
}
}
function utf8Slice (buf, start, end) {
end = Math.min(buf.length, end)
var res = []
var i = start
while (i < end) {
var firstByte = buf[i]
var codePoint = null
var bytesPerSequence = (firstByte > 0xEF) ? 4
: (firstByte > 0xDF) ? 3
: (firstByte > 0xBF) ? 2
: 1
if (i + bytesPerSequence <= end) {
var secondByte, thirdByte, fourthByte, tempCodePoint
switch (bytesPerSequence) {
case 1:
if (firstByte < 0x80) {
codePoint = firstByte
}
break
case 2:
secondByte = buf[i + 1]
if ((secondByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
if (tempCodePoint > 0x7F) {
codePoint = tempCodePoint
}
}
break
case 3:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
codePoint = tempCodePoint
}
}
break
case 4:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
fourthByte = buf[i + 3]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
codePoint = tempCodePoint
}
}
}
}
if (codePoint === null) {
// we did not generate a valid codePoint so insert a
// replacement char (U+FFFD) and advance only 1 byte
codePoint = 0xFFFD
bytesPerSequence = 1
} else if (codePoint > 0xFFFF) {
// encode to utf16 (surrogate pair dance)
codePoint -= 0x10000
res.push(codePoint >>> 10 & 0x3FF | 0xD800)
codePoint = 0xDC00 | codePoint & 0x3FF
}
res.push(codePoint)
i += bytesPerSequence
}
return decodeCodePointsArray(res)
}
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000
function decodeCodePointsArray (codePoints) {
var len = codePoints.length
if (len <= MAX_ARGUMENTS_LENGTH) {
return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
}
// Decode in chunks to avoid "call stack size exceeded".
var res = ''
var i = 0
while (i < len) {
res += String.fromCharCode.apply(
String,
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
)
}
return res
}
function asciiSlice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i] & 0x7F)
}
return ret
}
function latin1Slice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i])
}
return ret
}
function hexSlice (buf, start, end) {
var len = buf.length
if (!start || start < 0) start = 0
if (!end || end < 0 || end > len) end = len
var out = ''
for (var i = start; i < end; ++i) {
out += toHex(buf[i])
}
return out
}
function utf16leSlice (buf, start, end) {
var bytes = buf.slice(start, end)
var res = ''
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
}
return res
}
Buffer.prototype.slice = function slice (start, end) {
var len = this.length
start = ~~start
end = end === undefined ? len : ~~end
if (start < 0) {
start += len
if (start < 0) start = 0
} else if (start > len) {
start = len
}
if (end < 0) {
end += len
if (end < 0) end = 0
} else if (end > len) {
end = len
}
if (end < start) end = start
var newBuf = this.subarray(start, end)
// Return an augmented `Uint8Array` instance
newBuf.__proto__ = Buffer.prototype
return newBuf
}
/*
* Need to make sure that buffer isn't trying to write out of bounds.
*/
function checkOffset (offset, ext, length) {
if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}
Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var val = this[offset]
var mul = 1
var i = 0
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul
}
return val
}
Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
checkOffset(offset, byteLength, this.length)
}
var val = this[offset + --byteLength]
var mul = 1
while (byteLength > 0 && (mul *= 0x100)) {
val += this[offset + --byteLength] * mul
}
return val
}
Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
return this[offset]
}
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return this[offset] | (this[offset + 1] << 8)
}
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return (this[offset] << 8) | this[offset + 1]
}
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ((this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16)) +
(this[offset + 3] * 0x1000000)
}
Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset] * 0x1000000) +
((this[offset + 1] << 16) |
(this[offset + 2] << 8) |
this[offset + 3])
}
Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var val = this[offset]
var mul = 1
var i = 0
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul
}
mul *= 0x80
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
return val
}
Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var i = byteLength
var mul = 1
var val = this[offset + --i]
while (i > 0 && (mul *= 0x100)) {
val += this[offset + --i] * mul
}
mul *= 0x80
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
return val
}
Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
if (!(this[offset] & 0x80)) return (this[offset])
return ((0xff - this[offset] + 1) * -1)
}
Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
var val = this[offset] | (this[offset + 1] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
var val = this[offset + 1] | (this[offset] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16) |
(this[offset + 3] << 24)
}
Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset] << 24) |
(this[offset + 1] << 16) |
(this[offset + 2] << 8) |
(this[offset + 3])
}
Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, true, 23, 4)
}
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, false, 23, 4)
}
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, true, 52, 8)
}
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, false, 52, 8)
}
function checkInt (buf, value, offset, ext, max, min) {
if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
if (offset + ext > buf.length) throw new RangeError('Index out of range')
}
Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1
checkInt(this, value, offset, byteLength, maxBytes, 0)
}
var mul = 1
var i = 0
this[offset] = value & 0xFF
while (++i < byteLength && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1
checkInt(this, value, offset, byteLength, maxBytes, 0)
}
var i = byteLength - 1
var mul = 1
this[offset + i] = value & 0xFF
while (--i >= 0 && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
return offset + 2
}
Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset + 3] = (value >>> 24)
this[offset + 2] = (value >>> 16)
this[offset + 1] = (value >>> 8)
this[offset] = (value & 0xff)
return offset + 4
}
Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
return offset + 4
}
Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
var limit = Math.pow(2, (8 * byteLength) - 1)
checkInt(this, value, offset, byteLength, limit - 1, -limit)
}
var i = 0
var mul = 1
var sub = 0
this[offset] = value & 0xFF
while (++i < byteLength && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
sub = 1
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
var limit = Math.pow(2, (8 * byteLength) - 1)
checkInt(this, value, offset, byteLength, limit - 1, -limit)
}
var i = byteLength - 1
var mul = 1
var sub = 0
this[offset + i] = value & 0xFF
while (--i >= 0 && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
sub = 1
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
if (value < 0) value = 0xff + value + 1
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
return offset + 2
}
Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
this[offset + 2] = (value >>> 16)
this[offset + 3] = (value >>> 24)
return offset + 4
}
Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
if (value < 0) value = 0xffffffff + value + 1
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
return offset + 4
}
function checkIEEE754 (buf, value, offset, ext, max, min) {
if (offset + ext > buf.length) throw new RangeError('Index out of range')
if (offset < 0) throw new RangeError('Index out of range')
}
function writeFloat (buf, value, offset, littleEndian, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
}
ieee754.write(buf, value, offset, littleEndian, 23, 4)
return offset + 4
}
Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
return writeFloat(this, value, offset, true, noAssert)
}
Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
return writeFloat(this, value, offset, false, noAssert)
}
function writeDouble (buf, value, offset, littleEndian, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
}
ieee754.write(buf, value, offset, littleEndian, 52, 8)
return offset + 8
}
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
return writeDouble(this, value, offset, true, noAssert)
}
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
return writeDouble(this, value, offset, false, noAssert)
}
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
if (!start) start = 0
if (!end && end !== 0) end = this.length
if (targetStart >= target.length) targetStart = target.length
if (!targetStart) targetStart = 0
if (end > 0 && end < start) end = start
// Copy 0 bytes; we're done
if (end === start) return 0
if (target.length === 0 || this.length === 0) return 0
// Fatal error conditions
if (targetStart < 0) {
throw new RangeError('targetStart out of bounds')
}
if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
if (end < 0) throw new RangeError('sourceEnd out of bounds')
// Are we oob?
if (end > this.length) end = this.length
if (target.length - targetStart < end - start) {
end = target.length - targetStart + start
}
var len = end - start
var i
if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start]
}
} else if (len < 1000) {
// ascending copy from start
for (i = 0; i < len; ++i) {
target[i + targetStart] = this[i + start]
}
} else {
Uint8Array.prototype.set.call(
target,
this.subarray(start, start + len),
targetStart
)
}
return len
}
// Usage:
// buffer.fill(number[, offset[, end]])
// buffer.fill(buffer[, offset[, end]])
// buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
// Handle string cases:
if (typeof val === 'string') {
if (typeof start === 'string') {
encoding = start
start = 0
end = this.length
} else if (typeof end === 'string') {
encoding = end
end = this.length
}
if (val.length === 1) {
var code = val.charCodeAt(0)
if (code < 256) {
val = code
}
}
if (encoding !== undefined && typeof encoding !== 'string') {
throw new TypeError('encoding must be a string')
}
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
} else if (typeof val === 'number') {
val = val & 255
}
// Invalid ranges are not set to a default, so can range check early.
if (start < 0 || this.length < start || this.length < end) {
throw new RangeError('Out of range index')
}
if (end <= start) {
return this
}
start = start >>> 0
end = end === undefined ? this.length : end >>> 0
if (!val) val = 0
var i
if (typeof val === 'number') {
for (i = start; i < end; ++i) {
this[i] = val
}
} else {
var bytes = Buffer.isBuffer(val)
? val
: new Buffer(val, encoding)
var len = bytes.length
for (i = 0; i < end - start; ++i) {
this[i + start] = bytes[i % len]
}
}
return this
}
// HELPER FUNCTIONS
// ================
var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
function base64clean (str) {
// Node strips out invalid characters like \n and \t from the string, base64-js does not
str = str.trim().replace(INVALID_BASE64_RE, '')
// Node converts strings with length < 2 to ''
if (str.length < 2) return ''
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
while (str.length % 4 !== 0) {
str = str + '='
}
return str
}
function toHex (n) {
if (n < 16) return '0' + n.toString(16)
return n.toString(16)
}
function utf8ToBytes (string, units) {
units = units || Infinity
var codePoint
var length = string.length
var leadSurrogate = null
var bytes = []
for (var i = 0; i < length; ++i) {
codePoint = string.charCodeAt(i)
// is surrogate component
if (codePoint > 0xD7FF && codePoint < 0xE000) {
// last char was a lead
if (!leadSurrogate) {
// no lead yet
if (codePoint > 0xDBFF) {
// unexpected trail
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
continue
} else if (i + 1 === length) {
// unpaired lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
continue
}
// valid lead
leadSurrogate = codePoint
continue
}
// 2 leads in a row
if (codePoint < 0xDC00) {
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
leadSurrogate = codePoint
continue
}
// valid surrogate pair
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
} else if (leadSurrogate) {
// valid bmp char, but last char was a lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
}
leadSurrogate = null
// encode utf8
if (codePoint < 0x80) {
if ((units -= 1) < 0) break
bytes.push(codePoint)
} else if (codePoint < 0x800) {
if ((units -= 2) < 0) break
bytes.push(
codePoint >> 0x6 | 0xC0,
codePoint & 0x3F | 0x80
)
} else if (codePoint < 0x10000) {
if ((units -= 3) < 0) break
bytes.push(
codePoint >> 0xC | 0xE0,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
)
} else if (codePoint < 0x110000) {
if ((units -= 4) < 0) break
bytes.push(
codePoint >> 0x12 | 0xF0,
codePoint >> 0xC & 0x3F | 0x80,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
)
} else {
throw new Error('Invalid code point')
}
}
return bytes
}
function asciiToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; ++i) {
// Node's code seems to be doing this and not & 0x7F..
byteArray.push(str.charCodeAt(i) & 0xFF)
}
return byteArray
}
function utf16leToBytes (str, units) {
var c, hi, lo
var byteArray = []
for (var i = 0; i < str.length; ++i) {
if ((units -= 2) < 0) break
c = str.charCodeAt(i)
hi = c >> 8
lo = c % 256
byteArray.push(lo)
byteArray.push(hi)
}
return byteArray
}
function base64ToBytes (str) {
return base64.toByteArray(base64clean(str))
}
function blitBuffer (src, dst, offset, length) {
for (var i = 0; i < length; ++i) {
if ((i + offset >= dst.length) || (i >= src.length)) break
dst[i + offset] = src[i]
}
return i
}
// ArrayBuffers from another context (i.e. an iframe) do not pass the `instanceof` check
// but they should be treated as valid. See: https://github.com/feross/buffer/issues/166
function isArrayBuffer (obj) {
return obj instanceof ArrayBuffer ||
(obj != null && obj.constructor != null && obj.constructor.name === 'ArrayBuffer' &&
typeof obj.byteLength === 'number')
}
// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView`
function isArrayBufferView (obj) {
return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj)
}
function numberIsNaN (obj) {
return obj !== obj // eslint-disable-line no-self-compare
}
},{"base64-js":9,"ieee754":17}],13:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(arg) {
if (Array.isArray) {
return Array.isArray(arg);
}
return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = Buffer.isBuffer;
function objectToString(o) {
return Object.prototype.toString.call(o);
}
}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
},{"../../is-buffer/index.js":19}],14:[function(require,module,exports){
(function (process,Buffer){
var stream = require('readable-stream')
var eos = require('end-of-stream')
var inherits = require('inherits')
var shift = require('stream-shift')
var SIGNAL_FLUSH = new Buffer([0])
var onuncork = function(self, fn) {
if (self._corked) self.once('uncork', fn)
else fn()
}
var destroyer = function(self, end) {
return function(err) {
if (err) self.destroy(err.message === 'premature close' ? null : err)
else if (end && !self._ended) self.end()
}
}
var end = function(ws, fn) {
if (!ws) return fn()
if (ws._writableState && ws._writableState.finished) return fn()
if (ws._writableState) return ws.end(fn)
ws.end()
fn()
}
var toStreams2 = function(rs) {
return new (stream.Readable)({objectMode:true, highWaterMark:16}).wrap(rs)
}
var Duplexify = function(writable, readable, opts) {
if (!(this instanceof Duplexify)) return new Duplexify(writable, readable, opts)
stream.Duplex.call(this, opts)
this._writable = null
this._readable = null
this._readable2 = null
this._forwardDestroy = !opts || opts.destroy !== false
this._forwardEnd = !opts || opts.end !== false
this._corked = 1 // start corked
this._ondrain = null
this._drained = false
this._forwarding = false
this._unwrite = null
this._unread = null
this._ended = false
this.destroyed = false
if (writable) this.setWritable(writable)
if (readable) this.setReadable(readable)
}
inherits(Duplexify, stream.Duplex)
Duplexify.obj = function(writable, readable, opts) {
if (!opts) opts = {}
opts.objectMode = true
opts.highWaterMark = 16
return new Duplexify(writable, readable, opts)
}
Duplexify.prototype.cork = function() {
if (++this._corked === 1) this.emit('cork')
}
Duplexify.prototype.uncork = function() {
if (this._corked && --this._corked === 0) this.emit('uncork')
}
Duplexify.prototype.setWritable = function(writable) {
if (this._unwrite) this._unwrite()
if (this.destroyed) {
if (writable && writable.destroy) writable.destroy()
return
}
if (writable === null || writable === false) {
this.end()
return
}
var self = this
var unend = eos(writable, {writable:true, readable:false}, destroyer(this, this._forwardEnd))
var ondrain = function() {
var ondrain = self._ondrain
self._ondrain = null
if (ondrain) ondrain()
}
var clear = function() {
self._writable.removeListener('drain', ondrain)
unend()
}
if (this._unwrite) process.nextTick(ondrain) // force a drain on stream reset to avoid livelocks
this._writable = writable
this._writable.on('drain', ondrain)
this._unwrite = clear
this.uncork() // always uncork setWritable
}
Duplexify.prototype.setReadable = function(readable) {
if (this._unread) this._unread()
if (this.destroyed) {
if (readable && readable.destroy) readable.destroy()
return
}
if (readable === null || readable === false) {
this.push(null)
this.resume()
return
}
var self = this
var unend = eos(readable, {writable:false, readable:true}, destroyer(this))
var onreadable = function() {
self._forward()
}
var onend = function() {
self.push(null)
}
var clear = function() {
self._readable2.removeListener('readable', onreadable)
self._readable2.removeListener('end', onend)
unend()
}
this._drained = true
this._readable = readable
this._readable2 = readable._readableState ? readable : toStreams2(readable)
this._readable2.on('readable', onreadable)
this._readable2.on('end', onend)
this._unread = clear
this._forward()
}
Duplexify.prototype._read = function() {
this._drained = true
this._forward()
}
Duplexify.prototype._forward = function() {
if (this._forwarding || !this._readable2 || !this._drained) return
this._forwarding = true
var data
while (this._drained && (data = shift(this._readable2)) !== null) {
if (this.destroyed) continue
this._drained = this.push(data)
}
this._forwarding = false
}
Duplexify.prototype.destroy = function(err) {
if (this.destroyed) return
this.destroyed = true
var self = this
process.nextTick(function() {
self._destroy(err)
})
}
Duplexify.prototype._destroy = function(err) {
if (err) {
var ondrain = this._ondrain
this._ondrain = null
if (ondrain) ondrain(err)
else this.emit('error', err)
}
if (this._forwardDestroy) {
if (this._readable && this._readable.destroy) this._readable.destroy()
if (this._writable && this._writable.destroy) this._writable.destroy()
}
this.emit('close')
}
Duplexify.prototype._write = function(data, enc, cb) {
if (this.destroyed) return cb()
if (this._corked) return onuncork(this, this._write.bind(this, data, enc, cb))
if (data === SIGNAL_FLUSH) return this._finish(cb)
if (!this._writable) return cb()
if (this._writable.write(data) === false) this._ondrain = cb
else cb()
}
Duplexify.prototype._finish = function(cb) {
var self = this
this.emit('preend')
onuncork(this, function() {
end(self._forwardEnd && self._writable, function() {
// haxx to not emit prefinish twice
if (self._writableState.prefinished === false) self._writableState.prefinished = true
self.emit('prefinish')
onuncork(self, cb)
})
})
}
Duplexify.prototype.end = function(data, enc, cb) {
if (typeof data === 'function') return this.end(null, null, data)
if (typeof enc === 'function') return this.end(data, null, enc)
this._ended = true
if (data) this.write(data)
if (!this._writableState.ending) this.write(SIGNAL_FLUSH)
return stream.Writable.prototype.end.call(this, cb)
}
module.exports = Duplexify
}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":30,"buffer":12,"end-of-stream":15,"inherits":18,"readable-stream":44,"stream-shift":47}],15:[function(require,module,exports){
var once = require('once');
var noop = function() {};
var isRequest = function(stream) {
return stream.setHeader && typeof stream.abort === 'function';
};
var isChildProcess = function(stream) {
return stream.stdio && Array.isArray(stream.stdio) && stream.stdio.length === 3
};
var eos = function(stream, opts, callback) {
if (typeof opts === 'function') return eos(stream, null, opts);
if (!opts) opts = {};
callback = once(callback || noop);
var ws = stream._writableState;
var rs = stream._readableState;
var readable = opts.readable || (opts.readable !== false && stream.readable);
var writable = opts.writable || (opts.writable !== false && stream.writable);
var onlegacyfinish = function() {
if (!stream.writable) onfinish();
};
var onfinish = function() {
writable = false;
if (!readable) callback.call(stream);
};
var onend = function() {
readable = false;
if (!writable) callback.call(stream);
};
var onexit = function(exitCode) {
callback.call(stream, exitCode ? new Error('exited with error code: ' + exitCode) : null);
};
var onclose = function() {
if (readable && !(rs && rs.ended)) return callback.call(stream, new Error('premature close'));
if (writable && !(ws && ws.ended)) return callback.call(stream, new Error('premature close'));
};
var onrequest = function() {
stream.req.on('finish', onfinish);
};
if (isRequest(stream)) {
stream.on('complete', onfinish);
stream.on('abort', onclose);
if (stream.req) onrequest();
else stream.on('request', onrequest);
} else if (writable && !ws) { // legacy streams
stream.on('end', onlegacyfinish);
stream.on('close', onlegacyfinish);
}
if (isChildProcess(stream)) stream.on('exit', onexit);
stream.on('end', onend);
stream.on('finish', onfinish);
if (opts.error !== false) stream.on('error', callback);
stream.on('close', onclose);
return function() {
stream.removeListener('complete', onfinish);
stream.removeListener('abort', onclose);
stream.removeListener('request', onrequest);
if (stream.req) stream.req.removeListener('finish', onfinish);
stream.removeListener('end', onlegacyfinish);
stream.removeListener('close', onlegacyfinish);
stream.removeListener('finish', onfinish);
stream.removeListener('exit', onexit);
stream.removeListener('end', onend);
stream.removeListener('error', callback);
stream.removeListener('close', onclose);
};
};
module.exports = eos;
},{"once":28}],16:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
function EventEmitter() {
this._events = this._events || {};
this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;
// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
if (!isNumber(n) || n < 0 || isNaN(n))
throw TypeError('n must be a positive number');
this._maxListeners = n;
return this;
};
EventEmitter.prototype.emit = function(type) {
var er, handler, len, args, i, listeners;
if (!this._events)
this._events = {};
// If there is no 'error' event listener then throw.
if (type === 'error') {
if (!this._events.error ||
(isObject(this._events.error) && !this._events.error.length)) {
er = arguments[1];
if (er instanceof Error) {
throw er; // Unhandled 'error' event
} else {
// At least give some kind of context to the user
var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
err.context = er;
throw err;
}
}
}
handler = this._events[type];
if (isUndefined(handler))
return false;
if (isFunction(handler)) {
switch (arguments.length) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
default:
args = Array.prototype.slice.call(arguments, 1);
handler.apply(this, args);
}
} else if (isObject(handler)) {
args = Array.prototype.slice.call(arguments, 1);
listeners = handler.slice();
len = listeners.length;
for (i = 0; i < len; i++)
listeners[i].apply(this, args);
}
return true;
};
EventEmitter.prototype.addListener = function(type, listener) {
var m;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events)
this._events = {};
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (this._events.newListener)
this.emit('newListener', type,
isFunction(listener.listener) ?
listener.listener : listener);
if (!this._events[type])
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
else if (isObject(this._events[type]))
// If we've already got an array, just append.
this._events[type].push(listener);
else
// Adding the second element, need to change to array.
this._events[type] = [this._events[type], listener];
// Check for listener leak
if (isObject(this._events[type]) && !this._events[type].warned) {
if (!isUndefined(this._maxListeners)) {
m = this._maxListeners;
} else {
m = EventEmitter.defaultMaxListeners;
}
if (m && m > 0 && this._events[type].length > m) {
this._events[type].warned = true;
console.error('(node) warning: possible EventEmitter memory ' +
'leak detected. %d listeners added. ' +
'Use emitter.setMaxListeners() to increase limit.',
this._events[type].length);
if (typeof console.trace === 'function') {
// not supported in IE 10
console.trace();
}
}
}
return this;
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function(type, listener) {
if (!isFunction(listener))
throw TypeError('listener must be a function');
var fired = false;
function g() {
this.removeListener(type, g);
if (!fired) {
fired = true;
listener.apply(this, arguments);
}
}
g.listener = listener;
this.on(type, g);
return this;
};
// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
var list, position, length, i;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events || !this._events[type])
return this;
list = this._events[type];
length = list.length;
position = -1;
if (list === listener ||
(isFunction(list.listener) && list.listener === listener)) {
delete this._events[type];
if (this._events.removeListener)
this.emit('removeListener', type, listener);
} else if (isObject(list)) {
for (i = length; i-- > 0;) {
if (list[i] === listener ||
(list[i].listener && list[i].listener === listener)) {
position = i;
break;
}
}
if (position < 0)
return this;
if (list.length === 1) {
list.length = 0;
delete this._events[type];
} else {
list.splice(position, 1);
}
if (this._events.removeListener)
this.emit('removeListener', type, listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners = function(type) {
var key, listeners;
if (!this._events)
return this;
// not listening for removeListener, no need to emit
if (!this._events.removeListener) {
if (arguments.length === 0)
this._events = {};
else if (this._events[type])
delete this._events[type];
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
for (key in this._events) {
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = {};
return this;
}
listeners = this._events[type];
if (isFunction(listeners)) {
this.removeListener(type, listeners);
} else if (listeners) {
// LIFO order
while (listeners.length)
this.removeListener(type, listeners[listeners.length - 1]);
}
delete this._events[type];
return this;
};
EventEmitter.prototype.listeners = function(type) {
var ret;
if (!this._events || !this._events[type])
ret = [];
else if (isFunction(this._events[type]))
ret = [this._events[type]];
else
ret = this._events[type].slice();
return ret;
};
EventEmitter.prototype.listenerCount = function(type) {
if (this._events) {
var evlistener = this._events[type];
if (isFunction(evlistener))
return 1;
else if (evlistener)
return evlistener.length;
}
return 0;
};
EventEmitter.listenerCount = function(emitter, type) {
return emitter.listenerCount(type);
};
function isFunction(arg) {
return typeof arg === 'function';
}
function isNumber(arg) {
return typeof arg === 'number';
}
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
function isUndefined(arg) {
return arg === void 0;
}
},{}],17:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
var e, m
var eLen = nBytes * 8 - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var nBits = -7
var i = isLE ? (nBytes - 1) : 0
var d = isLE ? -1 : 1
var s = buffer[offset + i]
i += d
e = s & ((1 << (-nBits)) - 1)
s >>= (-nBits)
nBits += eLen
for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
m = e & ((1 << (-nBits)) - 1)
e >>= (-nBits)
nBits += mLen
for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
if (e === 0) {
e = 1 - eBias
} else if (e === eMax) {
return m ? NaN : ((s ? -1 : 1) * Infinity)
} else {
m = m + Math.pow(2, mLen)
e = e - eBias
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c
var eLen = nBytes * 8 - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
var i = isLE ? 0 : (nBytes - 1)
var d = isLE ? 1 : -1
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
value = Math.abs(value)
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0
e = eMax
} else {
e = Math.floor(Math.log(value) / Math.LN2)
if (value * (c = Math.pow(2, -e)) < 1) {
e--
c *= 2
}
if (e + eBias >= 1) {
value += rt / c
} else {
value += rt * Math.pow(2, 1 - eBias)
}
if (value * c >= 2) {
e++
c /= 2
}
if (e + eBias >= eMax) {
m = 0
e = eMax
} else if (e + eBias >= 1) {
m = (value * c - 1) * Math.pow(2, mLen)
e = e + eBias
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
e = 0
}
}
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
e = (e << mLen) | m
eLen += mLen
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
buffer[offset + i - d] |= s * 128
}
},{}],18:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
},{}],19:[function(require,module,exports){
/*!
* Determine if an object is a Buffer
*
* @author Feross Aboukhadijeh
* @license MIT
*/
// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}
function isBuffer (obj) {
return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}
// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}
},{}],20:[function(require,module,exports){
var toString = {}.toString;
module.exports = Array.isArray || function (arr) {
return toString.call(arr) == '[object Array]';
};
},{}],21:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
/* Protocol - protocol constants */
var protocol = module.exports
/* Command code => mnemonic */
protocol.types = {
0: 'reserved',
1: 'connect',
2: 'connack',
3: 'publish',
4: 'puback',
5: 'pubrec',
6: 'pubrel',
7: 'pubcomp',
8: 'subscribe',
9: 'suback',
10: 'unsubscribe',
11: 'unsuback',
12: 'pingreq',
13: 'pingresp',
14: 'disconnect',
15: 'reserved'
}
/* Mnemonic => Command code */
protocol.codes = {}
for (var k in protocol.types) {
var v = protocol.types[k]
protocol.codes[v] = k
}
/* Header */
protocol.CMD_SHIFT = 4
protocol.CMD_MASK = 0xF0
protocol.DUP_MASK = 0x08
protocol.QOS_MASK = 0x03
protocol.QOS_SHIFT = 1
protocol.RETAIN_MASK = 0x01
/* Length */
protocol.LENGTH_MASK = 0x7F
protocol.LENGTH_FIN_MASK = 0x80
/* Connack */
protocol.SESSIONPRESENT_MASK = 0x01
protocol.SESSIONPRESENT_HEADER = Buffer.from([protocol.SESSIONPRESENT_MASK])
protocol.CONNACK_HEADER = Buffer.from([protocol.codes['connack'] << protocol.CMD_SHIFT])
/* Connect */
protocol.USERNAME_MASK = 0x80
protocol.PASSWORD_MASK = 0x40
protocol.WILL_RETAIN_MASK = 0x20
protocol.WILL_QOS_MASK = 0x18
protocol.WILL_QOS_SHIFT = 3
protocol.WILL_FLAG_MASK = 0x04
protocol.CLEAN_SESSION_MASK = 0x02
protocol.CONNECT_HEADER = Buffer.from([protocol.codes['connect'] << protocol.CMD_SHIFT])
function genHeader (type) {
return [0, 1, 2].map(function (qos) {
return [0, 1].map(function (dup) {
return [0, 1].map(function (retain) {
var buf = new Buffer(1)
buf.writeUInt8(
protocol.codes[type] << protocol.CMD_SHIFT |
(dup ? protocol.DUP_MASK : 0) |
qos << protocol.QOS_SHIFT | retain, 0, true)
return buf
})
})
})
}
/* Publish */
protocol.PUBLISH_HEADER = genHeader('publish')
/* Subscribe */
protocol.SUBSCRIBE_HEADER = genHeader('subscribe')
/* Unsubscribe */
protocol.UNSUBSCRIBE_HEADER = genHeader('unsubscribe')
/* Confirmations */
protocol.ACKS = {
unsuback: genHeader('unsuback'),
puback: genHeader('puback'),
pubcomp: genHeader('pubcomp'),
pubrel: genHeader('pubrel'),
pubrec: genHeader('pubrec')
}
protocol.SUBACK_HEADER = Buffer.from([protocol.codes['suback'] << protocol.CMD_SHIFT])
/* Protocol versions */
protocol.VERSION3 = Buffer.from([3])
protocol.VERSION4 = Buffer.from([4])
/* QoS */
protocol.QOS = [0, 1, 2].map(function (qos) {
return Buffer.from([qos])
})
/* Empty packets */
protocol.EMPTY = {
pingreq: Buffer.from([protocol.codes['pingreq'] << 4, 0]),
pingresp: Buffer.from([protocol.codes['pingresp'] << 4, 0]),
disconnect: Buffer.from([protocol.codes['disconnect'] << 4, 0])
}
},{"safe-buffer":46}],22:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var writeToStream = require('./writeToStream')
var EE = require('events').EventEmitter
var inherits = require('inherits')
function generate (packet) {
var stream = new Accumulator()
writeToStream(packet, stream)
return stream.concat()
}
function Accumulator () {
this._array = new Array(20)
this._i = 0
}
inherits(Accumulator, EE)
Accumulator.prototype.write = function (chunk) {
this._array[this._i++] = chunk
return true
}
Accumulator.prototype.concat = function () {
var length = 0
var lengths = new Array(this._array.length)
var list = this._array
var pos = 0
var i
var result
for (i = 0; i < list.length && list[i]; i++) {
if (typeof list[i] !== 'string') lengths[i] = list[i].length
else lengths[i] = Buffer.byteLength(list[i])
length += lengths[i]
}
result = Buffer.allocUnsafe(length)
for (i = 0; i < list.length && list[i]; i++) {
if (typeof list[i] !== 'string') {
list[i].copy(result, pos)
pos += lengths[i]
} else {
result.write(list[i], pos)
pos += lengths[i]
}
}
return result
}
module.exports = generate
},{"./writeToStream":27,"events":16,"inherits":18,"safe-buffer":46}],23:[function(require,module,exports){
'use strict'
exports.parser = require('./parser')
exports.generate = require('./generate')
exports.writeToStream = require('./writeToStream')
},{"./generate":22,"./parser":26,"./writeToStream":27}],24:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var max = 65536
var cache = {}
function generateBuffer (i) {
var buffer = Buffer.allocUnsafe(2)
buffer.writeUInt8(i >> 8, 0, true)
buffer.writeUInt8(i & 0x00FF, 0 + 1, true)
return buffer
}
function generateCache () {
for (var i = 0; i < max; i++) {
cache[i] = generateBuffer(i)
}
}
module.exports = {
cache: cache,
generateCache: generateCache,
generateNumber: generateBuffer
}
},{"safe-buffer":46}],25:[function(require,module,exports){
function Packet () {
this.cmd = null
this.retain = false
this.qos = 0
this.dup = false
this.length = -1
this.topic = null
this.payload = null
}
module.exports = Packet
},{}],26:[function(require,module,exports){
'use strict'
var bl = require('bl')
var inherits = require('inherits')
var EE = require('events').EventEmitter
var Packet = require('./packet')
var constants = require('./constants')
function Parser () {
if (!(this instanceof Parser)) return new Parser()
this._states = [
'_parseHeader',
'_parseLength',
'_parsePayload',
'_newPacket'
]
this._resetState()
}
inherits(Parser, EE)
Parser.prototype._resetState = function () {
this.packet = new Packet()
this.error = null
this._list = bl()
this._stateCounter = 0
}
Parser.prototype.parse = function (buf) {
if (this.error) this._resetState()
this._list.append(buf)
while ((this.packet.length !== -1 || this._list.length > 0) &&
this[this._states[this._stateCounter]]() &&
!this.error) {
this._stateCounter++
if (this._stateCounter >= this._states.length) this._stateCounter = 0
}
return this._list.length
}
Parser.prototype._parseHeader = function () {
// There is at least one byte in the buffer
var zero = this._list.readUInt8(0)
this.packet.cmd = constants.types[zero >> constants.CMD_SHIFT]
this.packet.retain = (zero & constants.RETAIN_MASK) !== 0
this.packet.qos = (zero >> constants.QOS_SHIFT) & constants.QOS_MASK
this.packet.dup = (zero & constants.DUP_MASK) !== 0
this._list.consume(1)
return true
}
Parser.prototype._parseLength = function () {
// There is at least one byte in the list
var bytes = 0
var mul = 1
var length = 0
var result = true
var current
while (bytes < 5) {
current = this._list.readUInt8(bytes++)
length += mul * (current & constants.LENGTH_MASK)
mul *= 0x80
if ((current & constants.LENGTH_FIN_MASK) === 0) break
if (this._list.length <= bytes) {
result = false
break
}
}
if (result) {
this.packet.length = length
this._list.consume(bytes)
}
return result
}
Parser.prototype._parsePayload = function () {
var result = false
// Do we have a payload? Do we have enough data to complete the payload?
// PINGs have no payload
if (this.packet.length === 0 || this._list.length >= this.packet.length) {
this._pos = 0
switch (this.packet.cmd) {
case 'connect':
this._parseConnect()
break
case 'connack':
this._parseConnack()
break
case 'publish':
this._parsePublish()
break
case 'puback':
case 'pubrec':
case 'pubrel':
case 'pubcomp':
this._parseMessageId()
break
case 'subscribe':
this._parseSubscribe()
break
case 'suback':
this._parseSuback()
break
case 'unsubscribe':
this._parseUnsubscribe()
break
case 'unsuback':
this._parseUnsuback()
break
case 'pingreq':
case 'pingresp':
case 'disconnect':
// These are empty, nothing to do
break
default:
this._emitError(new Error('Not supported'))
}
result = true
}
return result
}
Parser.prototype._parseConnect = function () {
var protocolId // Protocol ID
var clientId // Client ID
var topic // Will topic
var payload // Will payload
var password // Password
var username // Username
var flags = {}
var packet = this.packet
// Parse protocolId
protocolId = this._parseString()
if (protocolId === null) return this._emitError(new Error('Cannot parse protocolId'))
if (protocolId !== 'MQTT' && protocolId !== 'MQIsdp') {
return this._emitError(new Error('Invalid protocolId'))
}
packet.protocolId = protocolId
// Parse constants version number
if (this._pos >= this._list.length) return this._emitError(new Error('Packet too short'))
packet.protocolVersion = this._list.readUInt8(this._pos)
if (packet.protocolVersion !== 3 && packet.protocolVersion !== 4) {
return this._emitError(new Error('Invalid protocol version'))
}
this._pos++
if (this._pos >= this._list.length) {
return this._emitError(new Error('Packet too short'))
}
// Parse connect flags
flags.username = (this._list.readUInt8(this._pos) & constants.USERNAME_MASK)
flags.password = (this._list.readUInt8(this._pos) & constants.PASSWORD_MASK)
flags.will = (this._list.readUInt8(this._pos) & constants.WILL_FLAG_MASK)
if (flags.will) {
packet.will = {}
packet.will.retain = (this._list.readUInt8(this._pos) & constants.WILL_RETAIN_MASK) !== 0
packet.will.qos = (this._list.readUInt8(this._pos) &
constants.WILL_QOS_MASK) >> constants.WILL_QOS_SHIFT
}
packet.clean = (this._list.readUInt8(this._pos) & constants.CLEAN_SESSION_MASK) !== 0
this._pos++
// Parse keepalive
packet.keepalive = this._parseNum()
if (packet.keepalive === -1) return this._emitError(new Error('Packet too short'))
// Parse clientId
clientId = this._parseString()
if (clientId === null) return this._emitError(new Error('Packet too short'))
packet.clientId = clientId
if (flags.will) {
// Parse will topic
topic = this._parseString()
if (topic === null) return this._emitError(new Error('Cannot parse will topic'))
packet.will.topic = topic
// Parse will payload
payload = this._parseBuffer()
if (payload === null) return this._emitError(new Error('Cannot parse will payload'))
packet.will.payload = payload
}
// Parse username
if (flags.username) {
username = this._parseString()
if (username === null) return this._emitError(new Error('Cannot parse username'))
packet.username = username
}
// Parse password
if (flags.password) {
password = this._parseBuffer()
if (password === null) return this._emitError(new Error('Cannot parse password'))
packet.password = password
}
return packet
}
Parser.prototype._parseConnack = function () {
var packet = this.packet
if (this._list.length < 2) return null
packet.sessionPresent = !!(this._list.readUInt8(this._pos++) & constants.SESSIONPRESENT_MASK)
packet.returnCode = this._list.readUInt8(this._pos)
if (packet.returnCode === -1) return this._emitError(new Error('Cannot parse return code'))
}
Parser.prototype._parsePublish = function () {
var packet = this.packet
packet.topic = this._parseString()
if (packet.topic === null) return this._emitError(new Error('Cannot parse topic'))
// Parse messageId
if (packet.qos > 0) if (!this._parseMessageId()) { return }
packet.payload = this._list.slice(this._pos, packet.length)
}
Parser.prototype._parseSubscribe = function () {
var packet = this.packet
var topic
var qos
if (packet.qos !== 1) {
return this._emitError(new Error('Wrong subscribe header'))
}
packet.subscriptions = []
if (!this._parseMessageId()) { return }
while (this._pos < packet.length) {
// Parse topic
topic = this._parseString()
if (topic === null) return this._emitError(new Error('Cannot parse topic'))
qos = this._list.readUInt8(this._pos++)
// Push pair to subscriptions
packet.subscriptions.push({ topic: topic, qos: qos })
}
}
Parser.prototype._parseSuback = function () {
this.packet.granted = []
if (!this._parseMessageId()) { return }
// Parse granted QoSes
while (this._pos < this.packet.length) {
this.packet.granted.push(this._list.readUInt8(this._pos++))
}
}
Parser.prototype._parseUnsubscribe = function () {
var packet = this.packet
packet.unsubscriptions = []
// Parse messageId
if (!this._parseMessageId()) { return }
while (this._pos < packet.length) {
var topic
// Parse topic
topic = this._parseString()
if (topic === null) return this._emitError(new Error('Cannot parse topic'))
// Push topic to unsubscriptions
packet.unsubscriptions.push(topic)
}
}
Parser.prototype._parseUnsuback = function () {
if (!this._parseMessageId()) return this._emitError(new Error('Cannot parse messageId'))
}
Parser.prototype._parseMessageId = function () {
var packet = this.packet
packet.messageId = this._parseNum()
if (packet.messageId === null) {
this._emitError(new Error('Cannot parse messageId'))
return false
}
return true
}
Parser.prototype._parseString = function (maybeBuffer) {
var length = this._parseNum()
var result
var end = length + this._pos
if (length === -1 || end > this._list.length || end > this.packet.length) return null
result = this._list.toString('utf8', this._pos, end)
this._pos += length
return result
}
Parser.prototype._parseBuffer = function () {
var length = this._parseNum()
var result
var end = length + this._pos
if (length === -1 || end > this._list.length || end > this.packet.length) return null
result = this._list.slice(this._pos, end)
this._pos += length
return result
}
Parser.prototype._parseNum = function () {
if (this._list.length - this._pos < 2) return -1
var result = this._list.readUInt16BE(this._pos)
this._pos += 2
return result
}
Parser.prototype._newPacket = function () {
if (this.packet) {
this._list.consume(this.packet.length)
this.emit('packet', this.packet)
}
this.packet = new Packet()
return true
}
Parser.prototype._emitError = function (err) {
this.error = err
this.emit('error', err)
}
module.exports = Parser
},{"./constants":21,"./packet":25,"bl":10,"events":16,"inherits":18}],27:[function(require,module,exports){
'use strict'
var protocol = require('./constants')
var Buffer = require('safe-buffer').Buffer
var empty = Buffer.allocUnsafe(0)
var zeroBuf = Buffer.from([0])
var numbers = require('./numbers')
var nextTick = require('process-nextick-args')
var numCache = numbers.cache
var generateNumber = numbers.generateNumber
var generateCache = numbers.generateCache
var writeNumber = writeNumberCached
var toGenerate = true
function generate (packet, stream) {
if (stream.cork) {
stream.cork()
nextTick(uncork, stream)
}
if (toGenerate) {
toGenerate = false
generateCache()
}
switch (packet.cmd) {
case 'connect':
return connect(packet, stream)
case 'connack':
return connack(packet, stream)
case 'publish':
return publish(packet, stream)
case 'puback':
case 'pubrec':
case 'pubrel':
case 'pubcomp':
case 'unsuback':
return confirmation(packet, stream)
case 'subscribe':
return subscribe(packet, stream)
case 'suback':
return suback(packet, stream)
case 'unsubscribe':
return unsubscribe(packet, stream)
case 'pingreq':
case 'pingresp':
case 'disconnect':
return emptyPacket(packet, stream)
default:
stream.emit('error', new Error('Unknown command'))
return false
}
}
/**
* Controls numbers cache.
* Set to "false" to allocate buffers on-the-flight instead of pre-generated cache
*/
Object.defineProperty(generate, 'cacheNumbers', {
get: function () {
return writeNumber === writeNumberCached
},
set: function (value) {
if (value) {
if (!numCache || Object.keys(numCache).length === 0) toGenerate = true
writeNumber = writeNumberCached
} else {
toGenerate = false
writeNumber = writeNumberGenerated
}
}
})
function uncork (stream) {
stream.uncork()
}
function connect (opts, stream) {
var settings = opts || {}
var protocolId = settings.protocolId || 'MQTT'
var protocolVersion = settings.protocolVersion || 4
var will = settings.will
var clean = settings.clean
var keepalive = settings.keepalive || 0
var clientId = settings.clientId || ''
var username = settings.username
var password = settings.password
if (clean === undefined) clean = true
var length = 0
// Must be a string and non-falsy
if (!protocolId ||
(typeof protocolId !== 'string' && !Buffer.isBuffer(protocolId))) {
stream.emit('error', new Error('Invalid protocolId'))
return false
} else length += protocolId.length + 2
// Must be 3 or 4
if (protocolVersion !== 3 && protocolVersion !== 4) {
stream.emit('error', new Error('Invalid protocol version'))
return false
} else length += 1
// ClientId might be omitted in 3.1.1, but only if cleanSession is set to 1
if ((typeof clientId === 'string' || Buffer.isBuffer(clientId)) &&
(clientId || protocolVersion === 4) && (clientId || clean)) {
length += clientId.length + 2
} else {
if (protocolVersion < 4) {
stream.emit('error', new Error('clientId must be supplied before 3.1.1'))
return false
}
if ((clean * 1) === 0) {
stream.emit('error', new Error('clientId must be given if cleanSession set to 0'))
return false
}
}
// Must be a two byte number
if (typeof keepalive !== 'number' ||
keepalive < 0 ||
keepalive > 65535 ||
keepalive % 1 !== 0) {
stream.emit('error', new Error('Invalid keepalive'))
return false
} else length += 2
// Connect flags
length += 1
// If will exists...
if (will) {
// It must be an object
if (typeof will !== 'object') {
stream.emit('error', new Error('Invalid will'))
return false
}
// It must have topic typeof string
if (!will.topic || typeof will.topic !== 'string') {
stream.emit('error', new Error('Invalid will topic'))
return false
} else {
length += Buffer.byteLength(will.topic) + 2
}
// Payload
if (will.payload && will.payload) {
if (will.payload.length >= 0) {
if (typeof will.payload === 'string') {
length += Buffer.byteLength(will.payload) + 2
} else {
length += will.payload.length + 2
}
} else {
stream.emit('error', new Error('Invalid will payload'))
return false
}
} else {
length += 2
}
}
// Username
if (username) {
if (username.length) {
length += Buffer.byteLength(username) + 2
} else {
stream.emit('error', new Error('Invalid username'))
return false
}
}
// Password
if (password) {
if (password.length) {
length += byteLength(password) + 2
} else {
stream.emit('error', new Error('Invalid password'))
return false
}
}
// Generate header
stream.write(protocol.CONNECT_HEADER)
// Generate length
writeLength(stream, length)
// Generate protocol ID
writeStringOrBuffer(stream, protocolId)
stream.write(
protocolVersion === 4 ? protocol.VERSION4 : protocol.VERSION3
)
// Connect flags
var flags = 0
flags |= username ? protocol.USERNAME_MASK : 0
flags |= password ? protocol.PASSWORD_MASK : 0
flags |= (will && will.retain) ? protocol.WILL_RETAIN_MASK : 0
flags |= (will && will.qos) ? will.qos << protocol.WILL_QOS_SHIFT : 0
flags |= will ? protocol.WILL_FLAG_MASK : 0
flags |= clean ? protocol.CLEAN_SESSION_MASK : 0
stream.write(Buffer.from([flags]))
// Keepalive
writeNumber(stream, keepalive)
// Client ID
writeStringOrBuffer(stream, clientId)
// Will
if (will) {
writeString(stream, will.topic)
writeStringOrBuffer(stream, will.payload)
}
// Username and password
if (username) writeStringOrBuffer(stream, username)
if (password) writeStringOrBuffer(stream, password)
// This is a small packet that happens only once on a stream
// We assume the stream is always free to receive more data after this
return true
}
function connack (opts, stream) {
var settings = opts || {}
var rc = settings.returnCode
// Check return code
if (typeof rc !== 'number') {
stream.emit('error', new Error('Invalid return code'))
return false
}
stream.write(protocol.CONNACK_HEADER)
writeLength(stream, 2)
stream.write(opts.sessionPresent ? protocol.SESSIONPRESENT_HEADER : zeroBuf)
return stream.write(Buffer.from([rc]))
}
function publish (opts, stream) {
var settings = opts || {}
var qos = settings.qos || 0
var retain = settings.retain ? protocol.RETAIN_MASK : 0
var topic = settings.topic
var payload = settings.payload || empty
var id = settings.messageId
var length = 0
// Topic must be a non-empty string or Buffer
if (typeof topic === 'string') length += Buffer.byteLength(topic) + 2
else if (Buffer.isBuffer(topic)) length += topic.length + 2
else {
stream.emit('error', new Error('Invalid topic'))
return false
}
// Get the payload length
if (!Buffer.isBuffer(payload)) length += Buffer.byteLength(payload)
else length += payload.length
// Message ID must a number if qos > 0
if (qos && typeof id !== 'number') {
stream.emit('error', new Error('Invalid messageId'))
return false
} else if (qos) length += 2
// Header
stream.write(protocol.PUBLISH_HEADER[qos][opts.dup ? 1 : 0][retain ? 1 : 0])
// Remaining length
writeLength(stream, length)
// Topic
writeNumber(stream, byteLength(topic))
stream.write(topic)
// Message ID
if (qos > 0) writeNumber(stream, id)
// Payload
return stream.write(payload)
}
/* Puback, pubrec, pubrel and pubcomp */
function confirmation (opts, stream) {
var settings = opts || {}
var type = settings.cmd || 'puback'
var id = settings.messageId
var dup = (settings.dup && type === 'pubrel') ? protocol.DUP_MASK : 0
var qos = 0
if (type === 'pubrel') qos = 1
// Check message ID
if (typeof id !== 'number') {
stream.emit('error', new Error('Invalid messageId'))
return false
}
// Header
stream.write(protocol.ACKS[type][qos][dup][0])
// Length
writeLength(stream, 2)
// Message ID
return writeNumber(stream, id)
}
function subscribe (opts, stream) {
var settings = opts || {}
var dup = settings.dup ? protocol.DUP_MASK : 0
var id = settings.messageId
var subs = settings.subscriptions
var length = 0
// Check message ID
if (typeof id !== 'number') {
stream.emit('error', new Error('Invalid messageId'))
return false
} else length += 2
// Check subscriptions
if (typeof subs === 'object' && subs.length) {
for (var i = 0; i < subs.length; i += 1) {
var itopic = subs[i].topic
var iqos = subs[i].qos
if (typeof itopic !== 'string') {
stream.emit('error', new Error('Invalid subscriptions - invalid topic'))
return false
}
if (typeof iqos !== 'number') {
stream.emit('error', new Error('Invalid subscriptions - invalid qos'))
return false
}
length += Buffer.byteLength(itopic) + 2 + 1
}
} else {
stream.emit('error', new Error('Invalid subscriptions'))
return false
}
// Generate header
stream.write(protocol.SUBSCRIBE_HEADER[1][dup ? 1 : 0][0])
// Generate length
writeLength(stream, length)
// Generate message ID
writeNumber(stream, id)
var result = true
// Generate subs
for (var j = 0; j < subs.length; j++) {
var sub = subs[j]
var jtopic = sub.topic
var jqos = sub.qos
// Write topic string
writeString(stream, jtopic)
// Write qos
result = stream.write(protocol.QOS[jqos])
}
return result
}
function suback (opts, stream) {
var settings = opts || {}
var id = settings.messageId
var granted = settings.granted
var length = 0
// Check message ID
if (typeof id !== 'number') {
stream.emit('error', new Error('Invalid messageId'))
return false
} else length += 2
// Check granted qos vector
if (typeof granted === 'object' && granted.length) {
for (var i = 0; i < granted.length; i += 1) {
if (typeof granted[i] !== 'number') {
stream.emit('error', new Error('Invalid qos vector'))
return false
}
length += 1
}
} else {
stream.emit('error', new Error('Invalid qos vector'))
return false
}
// header
stream.write(protocol.SUBACK_HEADER)
// Length
writeLength(stream, length)
// Message ID
writeNumber(stream, id)
return stream.write(Buffer.from(granted))
}
function unsubscribe (opts, stream) {
var settings = opts || {}
var id = settings.messageId
var dup = settings.dup ? protocol.DUP_MASK : 0
var unsubs = settings.unsubscriptions
var length = 0
// Check message ID
if (typeof id !== 'number') {
stream.emit('error', new Error('Invalid messageId'))
return false
} else {
length += 2
}
// Check unsubs
if (typeof unsubs === 'object' && unsubs.length) {
for (var i = 0; i < unsubs.length; i += 1) {
if (typeof unsubs[i] !== 'string') {
stream.emit('error', new Error('Invalid unsubscriptions'))
return false
}
length += Buffer.byteLength(unsubs[i]) + 2
}
} else {
stream.emit('error', new Error('Invalid unsubscriptions'))
return false
}
// Header
stream.write(protocol.UNSUBSCRIBE_HEADER[1][dup ? 1 : 0][0])
// Length
writeLength(stream, length)
// Message ID
writeNumber(stream, id)
// Unsubs
var result = true
for (var j = 0; j < unsubs.length; j++) {
result = writeString(stream, unsubs[j])
}
return result
}
function emptyPacket (opts, stream) {
return stream.write(protocol.EMPTY[opts.cmd])
}
/**
* calcLengthLength - calculate the length of the remaining
* length field
*
* @api private
*/
function calcLengthLength (length) {
if (length >= 0 && length < 128) return 1
else if (length >= 128 && length < 16384) return 2
else if (length >= 16384 && length < 2097152) return 3
else if (length >= 2097152 && length < 268435456) return 4
else return 0
}
function genBufLength (length) {
var digit = 0
var pos = 0
var buffer = Buffer.allocUnsafe(calcLengthLength(length))
do {
digit = length % 128 | 0
length = length / 128 | 0
if (length > 0) digit = digit | 0x80
buffer.writeUInt8(digit, pos++, true)
} while (length > 0)
return buffer
}
/**
* writeLength - write an MQTT style length field to the buffer
*
* @param buffer - destination
* @param pos - offset
* @param length - length (>0)
* @returns number of bytes written
*
* @api private
*/
var lengthCache = {}
function writeLength (stream, length) {
var buffer = lengthCache[length]
if (!buffer) {
buffer = genBufLength(length)
if (length < 16384) lengthCache[length] = buffer
}
stream.write(buffer)
}
/**
* writeString - write a utf8 string to the buffer
*
* @param buffer - destination
* @param pos - offset
* @param string - string to write
* @return number of bytes written
*
* @api private
*/
function writeString (stream, string) {
var strlen = Buffer.byteLength(string)
writeNumber(stream, strlen)
stream.write(string, 'utf8')
}
/**
* writeNumber - write a two byte number to the buffer
*
* @param buffer - destination
* @param pos - offset
* @param number - number to write
* @return number of bytes written
*
* @api private
*/
function writeNumberCached (stream, number) {
return stream.write(numCache[number])
}
function writeNumberGenerated (stream, number) {
return stream.write(generateNumber(number))
}
/**
* writeStringOrBuffer - write a String or Buffer with the its length prefix
*
* @param buffer - destination
* @param pos - offset
* @param toWrite - String or Buffer
* @return number of bytes written
*/
function writeStringOrBuffer (stream, toWrite) {
if (toWrite && typeof toWrite === 'string') writeString(stream, toWrite)
else if (toWrite) {
writeNumber(stream, toWrite.length)
stream.write(toWrite)
} else writeNumber(stream, 0)
}
function byteLength (bufOrString) {
if (!bufOrString) return 0
else if (Buffer.isBuffer(bufOrString)) return bufOrString.length
else return Buffer.byteLength(bufOrString)
}
module.exports = generate
},{"./constants":21,"./numbers":24,"process-nextick-args":29,"safe-buffer":46}],28:[function(require,module,exports){
var wrappy = require('wrappy')
module.exports = wrappy(once)
module.exports.strict = wrappy(onceStrict)
once.proto = once(function () {
Object.defineProperty(Function.prototype, 'once', {
value: function () {
return once(this)
},
configurable: true
})
Object.defineProperty(Function.prototype, 'onceStrict', {
value: function () {
return onceStrict(this)
},
configurable: true
})
})
function once (fn) {
var f = function () {
if (f.called) return f.value
f.called = true
return f.value = fn.apply(this, arguments)
}
f.called = false
return f
}
function onceStrict (fn) {
var f = function () {
if (f.called)
throw new Error(f.onceError)
f.called = true
return f.value = fn.apply(this, arguments)
}
var name = fn.name || 'Function wrapped with `once`'
f.onceError = name + " shouldn't be called more than once"
f.called = false
return f
}
},{"wrappy":57}],29:[function(require,module,exports){
(function (process){
'use strict';
if (!process.version ||
process.version.indexOf('v0.') === 0 ||
process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
module.exports = nextTick;
} else {
module.exports = process.nextTick;
}
function nextTick(fn, arg1, arg2, arg3) {
if (typeof fn !== 'function') {
throw new TypeError('"callback" argument must be a function');
}
var len = arguments.length;
var args, i;
switch (len) {
case 0:
case 1:
return process.nextTick(fn);
case 2:
return process.nextTick(function afterTickOne() {
fn.call(null, arg1);
});
case 3:
return process.nextTick(function afterTickTwo() {
fn.call(null, arg1, arg2);
});
case 4:
return process.nextTick(function afterTickThree() {
fn.call(null, arg1, arg2, arg3);
});
default:
args = new Array(len - 1);
i = 0;
while (i < args.length) {
args[i++] = arguments[i];
}
return process.nextTick(function afterTick() {
fn.apply(null, args);
});
}
}
}).call(this,require('_process'))
},{"_process":30}],30:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
// cached from whatever global is present so that test runners that stub it
// don't break things. But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals. It's inside a
// function because try/catches deoptimize in certain engines.
var cachedSetTimeout;
var cachedClearTimeout;
function defaultSetTimout() {
throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
throw new Error('clearTimeout has not been defined');
}
(function () {
try {
if (typeof setTimeout === 'function') {
cachedSetTimeout = setTimeout;
} else {
cachedSetTimeout = defaultSetTimout;
}
} catch (e) {
cachedSetTimeout = defaultSetTimout;
}
try {
if (typeof clearTimeout === 'function') {
cachedClearTimeout = clearTimeout;
} else {
cachedClearTimeout = defaultClearTimeout;
}
} catch (e) {
cachedClearTimeout = defaultClearTimeout;
}
} ())
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
//normal enviroments in sane situations
return setTimeout(fun, 0);
}
// if setTimeout wasn't available but was latter defined
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedSetTimeout(fun, 0);
} catch(e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedSetTimeout.call(null, fun, 0);
} catch(e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
//normal enviroments in sane situations
return clearTimeout(marker);
}
// if clearTimeout wasn't available but was latter defined
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedClearTimeout(marker);
} catch (e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedClearTimeout.call(null, marker);
} catch (e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while(len) {
currentQueue = queue;
queue = [];
while (++queueIndex < len) {
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
process.nextTick = function (fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for (var i = 1; i < arguments.length; i++) {
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
};
// v8 likes predictible objects
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function () {
this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;
process.listeners = function (name) { return [] }
process.binding = function (name) {
throw new Error('process.binding is not supported');
};
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };
},{}],31:[function(require,module,exports){
(function (global){
/*! https://mths.be/punycode v1.4.1 by @mathias */
;(function(root) {
/** Detect free variables */
var freeExports = typeof exports == 'object' && exports &&
!exports.nodeType && exports;
var freeModule = typeof module == 'object' && module &&
!module.nodeType && module;
var freeGlobal = typeof global == 'object' && global;
if (
freeGlobal.global === freeGlobal ||
freeGlobal.window === freeGlobal ||
freeGlobal.self === freeGlobal
) {
root = freeGlobal;
}
/**
* The `punycode` object.
* @name punycode
* @type Object
*/
var punycode,
/** Highest positive signed 32-bit float value */
maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1
/** Bootstring parameters */
base = 36,
tMin = 1,
tMax = 26,
skew = 38,
damp = 700,
initialBias = 72,
initialN = 128, // 0x80
delimiter = '-', // '\x2D'
/** Regular expressions */
regexPunycode = /^xn--/,
regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars
regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators
/** Error messages */
errors = {
'overflow': 'Overflow: input needs wider integers to process',
'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
'invalid-input': 'Invalid input'
},
/** Convenience shortcuts */
baseMinusTMin = base - tMin,
floor = Math.floor,
stringFromCharCode = String.fromCharCode,
/** Temporary variable */
key;
/*--------------------------------------------------------------------------*/
/**
* A generic error utility function.
* @private
* @param {String} type The error type.
* @returns {Error} Throws a `RangeError` with the applicable error message.
*/
function error(type) {
throw new RangeError(errors[type]);
}
/**
* A generic `Array#map` utility function.
* @private
* @param {Array} array The array to iterate over.
* @param {Function} callback The function that gets called for every array
* item.
* @returns {Array} A new array of values returned by the callback function.
*/
function map(array, fn) {
var length = array.length;
var result = [];
while (length--) {
result[length] = fn(array[length]);
}
return result;
}
/**
* A simple `Array#map`-like wrapper to work with domain name strings or email
* addresses.
* @private
* @param {String} domain The domain name or email address.
* @param {Function} callback The function that gets called for every
* character.
* @returns {Array} A new string of characters returned by the callback
* function.
*/
function mapDomain(string, fn) {
var parts = string.split('@');
var result = '';
if (parts.length > 1) {
// In email addresses, only the domain name should be punycoded. Leave
// the local part (i.e. everything up to `@`) intact.
result = parts[0] + '@';
string = parts[1];
}
// Avoid `split(regex)` for IE8 compatibility. See #17.
string = string.replace(regexSeparators, '\x2E');
var labels = string.split('.');
var encoded = map(labels, fn).join('.');
return result + encoded;
}
/**
* Creates an array containing the numeric code points of each Unicode
* character in the string. While JavaScript uses UCS-2 internally,
* this function will convert a pair of surrogate halves (each of which
* UCS-2 exposes as separate characters) into a single code point,
* matching UTF-16.
* @see `punycode.ucs2.encode`
* @see
* @memberOf punycode.ucs2
* @name decode
* @param {String} string The Unicode input string (UCS-2).
* @returns {Array} The new array of code points.
*/
function ucs2decode(string) {
var output = [],
counter = 0,
length = string.length,
value,
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;
}
/**
* Creates a string based on an array of numeric code points.
* @see `punycode.ucs2.decode`
* @memberOf punycode.ucs2
* @name encode
* @param {Array} codePoints The array of numeric code points.
* @returns {String} The new Unicode string (UCS-2).
*/
function ucs2encode(array) {
return map(array, function(value) {
var output = '';
if (value > 0xFFFF) {
value -= 0x10000;
output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
value = 0xDC00 | value & 0x3FF;
}
output += stringFromCharCode(value);
return output;
}).join('');
}
/**
* Converts a basic code point into a digit/integer.
* @see `digitToBasic()`
* @private
* @param {Number} codePoint The basic numeric code point value.
* @returns {Number} The numeric value of a basic code point (for use in
* representing integers) in the range `0` to `base - 1`, or `base` if
* the code point does not represent a value.
*/
function basicToDigit(codePoint) {
if (codePoint - 48 < 10) {
return codePoint - 22;
}
if (codePoint - 65 < 26) {
return codePoint - 65;
}
if (codePoint - 97 < 26) {
return codePoint - 97;
}
return base;
}
/**
* Converts a digit/integer into a basic code point.
* @see `basicToDigit()`
* @private
* @param {Number} digit The numeric value of a basic code point.
* @returns {Number} The basic code point whose value (when used for
* representing integers) is `digit`, which needs to be in the range
* `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
* used; else, the lowercase form is used. The behavior is undefined
* if `flag` is non-zero and `digit` has no uppercase form.
*/
function digitToBasic(digit, flag) {
// 0..25 map to ASCII a..z or A..Z
// 26..35 map to ASCII 0..9
return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
}
/**
* Bias adaptation function as per section 3.4 of RFC 3492.
* https://tools.ietf.org/html/rfc3492#section-3.4
* @private
*/
function adapt(delta, numPoints, firstTime) {
var k = 0;
delta = firstTime ? floor(delta / damp) : delta >> 1;
delta += floor(delta / numPoints);
for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
delta = floor(delta / baseMinusTMin);
}
return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
}
/**
* Converts a Punycode string of ASCII-only symbols to a string of Unicode
* symbols.
* @memberOf punycode
* @param {String} input The Punycode string of ASCII-only symbols.
* @returns {String} The resulting string of Unicode symbols.
*/
function decode(input) {
// Don't use UCS-2
var output = [],
inputLength = input.length,
out,
i = 0,
n = initialN,
bias = initialBias,
basic,
j,
index,
oldi,
w,
k,
digit,
t,
/** Cached calculation results */
baseMinusT;
// Handle the basic code points: let `basic` be the number of input code
// points before the last delimiter, or `0` if there is none, then copy
// the first basic code points to the output.
basic = input.lastIndexOf(delimiter);
if (basic < 0) {
basic = 0;
}
for (j = 0; j < basic; ++j) {
// if it's not a basic code point
if (input.charCodeAt(j) >= 0x80) {
error('not-basic');
}
output.push(input.charCodeAt(j));
}
// Main decoding loop: start just after the last delimiter if any basic code
// points were copied; start at the beginning otherwise.
for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {
// `index` is the index of the next character to be consumed.
// Decode a generalized variable-length integer into `delta`,
// which gets added to `i`. The overflow checking is easier
// if we increase `i` as we go, then subtract off its starting
// value at the end to obtain `delta`.
for (oldi = i, w = 1, k = base; /* no condition */; k += base) {
if (index >= inputLength) {
error('invalid-input');
}
digit = basicToDigit(input.charCodeAt(index++));
if (digit >= base || digit > floor((maxInt - i) / w)) {
error('overflow');
}
i += digit * w;
t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
if (digit < t) {
break;
}
baseMinusT = base - t;
if (w > floor(maxInt / baseMinusT)) {
error('overflow');
}
w *= baseMinusT;
}
out = output.length + 1;
bias = adapt(i - oldi, out, oldi == 0);
// `i` was supposed to wrap around from `out` to `0`,
// incrementing `n` each time, so we'll fix that now:
if (floor(i / out) > maxInt - n) {
error('overflow');
}
n += floor(i / out);
i %= out;
// Insert `n` at position `i` of the output
output.splice(i++, 0, n);
}
return ucs2encode(output);
}
/**
* Converts a string of Unicode symbols (e.g. a domain name label) to a
* Punycode string of ASCII-only symbols.
* @memberOf punycode
* @param {String} input The string of Unicode symbols.
* @returns {String} The resulting Punycode string of ASCII-only symbols.
*/
function encode(input) {
var n,
delta,
handledCPCount,
basicLength,
bias,
j,
m,
q,
k,
t,
currentValue,
output = [],
/** `inputLength` will hold the number of code points in `input`. */
inputLength,
/** Cached calculation results */
handledCPCountPlusOne,
baseMinusT,
qMinusT;
// Convert the input in UCS-2 to Unicode
input = ucs2decode(input);
// Cache the length
inputLength = input.length;
// Initialize the state
n = initialN;
delta = 0;
bias = initialBias;
// Handle the basic code points
for (j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue < 0x80) {
output.push(stringFromCharCode(currentValue));
}
}
handledCPCount = basicLength = output.length;
// `handledCPCount` is the number of code points that have been handled;
// `basicLength` is the number of basic code points.
// Finish the basic string - if it is not empty - with a delimiter
if (basicLength) {
output.push(delimiter);
}
// Main encoding loop:
while (handledCPCount < inputLength) {
// All non-basic code points < n have been handled already. Find the next
// larger one:
for (m = maxInt, j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue >= n && currentValue < m) {
m = currentValue;
}
}
// Increase `delta` enough to advance the decoder's state to ,
// but guard against overflow
handledCPCountPlusOne = handledCPCount + 1;
if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
error('overflow');
}
delta += (m - n) * handledCPCountPlusOne;
n = m;
for (j = 0; j < inputLength; ++j) {
currentValue = input[j];
if (currentValue < n && ++delta > maxInt) {
error('overflow');
}
if (currentValue == n) {
// Represent delta as a generalized variable-length integer
for (q = delta, k = base; /* no condition */; k += base) {
t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
if (q < t) {
break;
}
qMinusT = q - t;
baseMinusT = base - t;
output.push(
stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
);
q = floor(qMinusT / baseMinusT);
}
output.push(stringFromCharCode(digitToBasic(q, 0)));
bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
delta = 0;
++handledCPCount;
}
}
++delta;
++n;
}
return output.join('');
}
/**
* Converts a Punycode string representing a domain name or an email address
* to Unicode. Only the Punycoded parts of the input will be converted, i.e.
* it doesn't matter if you call it on a string that has already been
* converted to Unicode.
* @memberOf punycode
* @param {String} input The Punycoded domain name or email address to
* convert to Unicode.
* @returns {String} The Unicode representation of the given Punycode
* string.
*/
function toUnicode(input) {
return mapDomain(input, function(string) {
return regexPunycode.test(string)
? decode(string.slice(4).toLowerCase())
: string;
});
}
/**
* Converts a Unicode string representing a domain name or an email address to
* Punycode. Only the non-ASCII parts of the domain name will be converted,
* i.e. it doesn't matter if you call it with a domain that's already in
* ASCII.
* @memberOf punycode
* @param {String} input The domain name or email address to convert, as a
* Unicode string.
* @returns {String} The Punycode representation of the given domain name or
* email address.
*/
function toASCII(input) {
return mapDomain(input, function(string) {
return regexNonASCII.test(string)
? 'xn--' + encode(string)
: string;
});
}
/*--------------------------------------------------------------------------*/
/** Define the public API */
punycode = {
/**
* A string representing the current Punycode.js version number.
* @memberOf punycode
* @type String
*/
'version': '1.4.1',
/**
* An object of methods to convert from JavaScript's internal character
* representation (UCS-2) to Unicode code points, and back.
* @see
* @memberOf punycode
* @type Object
*/
'ucs2': {
'decode': ucs2decode,
'encode': ucs2encode
},
'decode': decode,
'encode': encode,
'toASCII': toASCII,
'toUnicode': toUnicode
};
/** Expose `punycode` */
// 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('punycode', function() {
return punycode;
});
} else if (freeExports && freeModule) {
if (module.exports == freeExports) {
// in Node.js, io.js, or RingoJS v0.8.0+
freeModule.exports = punycode;
} else {
// in Narwhal or RingoJS v0.7.0-
for (key in punycode) {
punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
}
}
} else {
// in Rhino or a web browser
root.punycode = punycode;
}
}(this));
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],32:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
// If obj.hasOwnProperty has been overridden, then calling
// obj.hasOwnProperty(prop) will break.
// See: https://github.com/joyent/node/issues/1707
function hasOwnProperty(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
}
module.exports = function(qs, sep, eq, options) {
sep = sep || '&';
eq = eq || '=';
var obj = {};
if (typeof qs !== 'string' || qs.length === 0) {
return obj;
}
var regexp = /\+/g;
qs = qs.split(sep);
var maxKeys = 1000;
if (options && typeof options.maxKeys === 'number') {
maxKeys = options.maxKeys;
}
var len = qs.length;
// maxKeys <= 0 means that we should not limit keys count
if (maxKeys > 0 && len > maxKeys) {
len = maxKeys;
}
for (var i = 0; i < len; ++i) {
var x = qs[i].replace(regexp, '%20'),
idx = x.indexOf(eq),
kstr, vstr, k, v;
if (idx >= 0) {
kstr = x.substr(0, idx);
vstr = x.substr(idx + 1);
} else {
kstr = x;
vstr = '';
}
k = decodeURIComponent(kstr);
v = decodeURIComponent(vstr);
if (!hasOwnProperty(obj, k)) {
obj[k] = v;
} else if (isArray(obj[k])) {
obj[k].push(v);
} else {
obj[k] = [obj[k], v];
}
}
return obj;
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
},{}],33:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
var stringifyPrimitive = function(v) {
switch (typeof v) {
case 'string':
return v;
case 'boolean':
return v ? 'true' : 'false';
case 'number':
return isFinite(v) ? v : '';
default:
return '';
}
};
module.exports = function(obj, sep, eq, name) {
sep = sep || '&';
eq = eq || '=';
if (obj === null) {
obj = undefined;
}
if (typeof obj === 'object') {
return map(objectKeys(obj), function(k) {
var ks = encodeURIComponent(stringifyPrimitive(k)) + eq;
if (isArray(obj[k])) {
return map(obj[k], function(v) {
return ks + encodeURIComponent(stringifyPrimitive(v));
}).join(sep);
} else {
return ks + encodeURIComponent(stringifyPrimitive(obj[k]));
}
}).join(sep);
}
if (!name) return '';
return encodeURIComponent(stringifyPrimitive(name)) + eq +
encodeURIComponent(stringifyPrimitive(obj));
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
function map (xs, f) {
if (xs.map) return xs.map(f);
var res = [];
for (var i = 0; i < xs.length; i++) {
res.push(f(xs[i], i));
}
return res;
}
var objectKeys = Object.keys || function (obj) {
var res = [];
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) res.push(key);
}
return res;
};
},{}],34:[function(require,module,exports){
'use strict';
exports.decode = exports.parse = require('./decode');
exports.encode = exports.stringify = require('./encode');
},{"./decode":32,"./encode":33}],35:[function(require,module,exports){
module.exports = require('./lib/_stream_duplex.js');
},{"./lib/_stream_duplex.js":36}],36:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
'use strict';
/**/
var processNextTick = require('process-nextick-args');
/* */
/**/
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
keys.push(key);
}return keys;
};
/* */
module.exports = Duplex;
/**/
var util = require('core-util-is');
util.inherits = require('inherits');
/* */
var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');
util.inherits(Duplex, Readable);
var keys = objectKeys(Writable.prototype);
for (var v = 0; v < keys.length; v++) {
var method = keys[v];
if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
}
function Duplex(options) {
if (!(this instanceof Duplex)) return new Duplex(options);
Readable.call(this, options);
Writable.call(this, options);
if (options && options.readable === false) this.readable = false;
if (options && options.writable === false) this.writable = false;
this.allowHalfOpen = true;
if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
this.once('end', onend);
}
// the no-half-open enforcer
function onend() {
// if we allow half-open state, or if the writable side ended,
// then we're ok.
if (this.allowHalfOpen || this._writableState.ended) return;
// no more data can be written.
// But allow more writes to happen in this tick.
processNextTick(onEndNT, this);
}
function onEndNT(self) {
self.end();
}
Object.defineProperty(Duplex.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined || this._writableState === undefined) {
return false;
}
return this._readableState.destroyed && this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (this._readableState === undefined || this._writableState === undefined) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
this._writableState.destroyed = value;
}
});
Duplex.prototype._destroy = function (err, cb) {
this.push(null);
this.end();
processNextTick(cb, err);
};
function forEach(xs, f) {
for (var i = 0, l = xs.length; i < l; i++) {
f(xs[i], i);
}
}
},{"./_stream_readable":38,"./_stream_writable":40,"core-util-is":13,"inherits":18,"process-nextick-args":29}],37:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
'use strict';
module.exports = PassThrough;
var Transform = require('./_stream_transform');
/**/
var util = require('core-util-is');
util.inherits = require('inherits');
/* */
util.inherits(PassThrough, Transform);
function PassThrough(options) {
if (!(this instanceof PassThrough)) return new PassThrough(options);
Transform.call(this, options);
}
PassThrough.prototype._transform = function (chunk, encoding, cb) {
cb(null, chunk);
};
},{"./_stream_transform":39,"core-util-is":13,"inherits":18}],38:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
/**/
var processNextTick = require('process-nextick-args');
/* */
module.exports = Readable;
/**/
var isArray = require('isarray');
/* */
/**/
var Duplex;
/* */
Readable.ReadableState = ReadableState;
/**/
var EE = require('events').EventEmitter;
var EElistenerCount = function (emitter, type) {
return emitter.listeners(type).length;
};
/* */
/**/
var Stream = require('./internal/streams/stream');
/* */
// TODO(bmeurer): Change this back to const once hole checks are
// properly optimized away early in Ignition+TurboFan.
/**/
var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/* */
/**/
var util = require('core-util-is');
util.inherits = require('inherits');
/* */
/**/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
debug = debugUtil.debuglog('stream');
} else {
debug = function () {};
}
/* */
var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;
util.inherits(Readable, Stream);
var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
function prependListener(emitter, event, fn) {
// Sadly this is not cacheable as some libraries bundle their own
// event emitter implementation with them.
if (typeof emitter.prependListener === 'function') {
return emitter.prependListener(event, fn);
} else {
// This is a hack to make sure that our error handler is attached before any
// userland ones. NEVER DO THIS. This is here only because this code needs
// to continue to work with older versions of Node.js that do not include
// the prependListener() method. The goal is to eventually remove this hack.
if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}
}
function ReadableState(options, stream) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {};
// object stream flag. Used to make read(n) ignore n and to
// make all the buffer merging and length checks go away
this.objectMode = !!options.objectMode;
if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
// the point at which it stops calling _read() to fill the buffer
// Note: 0 is a valid value, means "don't call _read preemptively ever"
var hwm = options.highWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
// cast to ints.
this.highWaterMark = Math.floor(this.highWaterMark);
// A linked list is used to store data chunks instead of an array because the
// linked list can remove elements from the beginning faster than
// array.shift()
this.buffer = new BufferList();
this.length = 0;
this.pipes = null;
this.pipesCount = 0;
this.flowing = null;
this.ended = false;
this.endEmitted = false;
this.reading = false;
// a flag to be able to tell if the event 'readable'/'data' is emitted
// immediately, or on a later tick. We set this to true at first, because
// any actions that shouldn't happen until "later" should generally also
// not happen before the first read call.
this.sync = true;
// whenever we return null, then we set a flag to say
// that we're awaiting a 'readable' event emission.
this.needReadable = false;
this.emittedReadable = false;
this.readableListening = false;
this.resumeScheduled = false;
// has it been destroyed
this.destroyed = false;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// the number of writers that are awaiting a drain event in .pipe()s
this.awaitDrain = 0;
// if true, a maybeReadMore has been scheduled
this.readingMore = false;
this.decoder = null;
this.encoding = null;
if (options.encoding) {
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
this.decoder = new StringDecoder(options.encoding);
this.encoding = options.encoding;
}
}
function Readable(options) {
Duplex = Duplex || require('./_stream_duplex');
if (!(this instanceof Readable)) return new Readable(options);
this._readableState = new ReadableState(options, this);
// legacy
this.readable = true;
if (options) {
if (typeof options.read === 'function') this._read = options.read;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
}
Stream.call(this);
}
Object.defineProperty(Readable.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined) {
return false;
}
return this._readableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._readableState) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
}
});
Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
this.push(null);
cb(err);
};
// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function (chunk, encoding) {
var state = this._readableState;
var skipChunkCheck;
if (!state.objectMode) {
if (typeof chunk === 'string') {
encoding = encoding || state.defaultEncoding;
if (encoding !== state.encoding) {
chunk = Buffer.from(chunk, encoding);
encoding = '';
}
skipChunkCheck = true;
}
} else {
skipChunkCheck = true;
}
return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};
// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
return readableAddChunk(this, chunk, null, true, false);
};
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
var state = stream._readableState;
if (chunk === null) {
state.reading = false;
onEofChunk(stream, state);
} else {
var er;
if (!skipChunkCheck) er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (addToFront) {
if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
} else if (state.ended) {
stream.emit('error', new Error('stream.push() after EOF'));
} else {
state.reading = false;
if (state.decoder && !encoding) {
chunk = state.decoder.write(chunk);
if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
} else {
addChunk(stream, state, chunk, false);
}
}
} else if (!addToFront) {
state.reading = false;
}
}
return needMoreData(state);
}
function addChunk(stream, state, chunk, addToFront) {
if (state.flowing && state.length === 0 && !state.sync) {
stream.emit('data', chunk);
stream.read(0);
} else {
// update the buffer info.
state.length += state.objectMode ? 1 : chunk.length;
if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
if (state.needReadable) emitReadable(stream);
}
maybeReadMore(stream, state);
}
function chunkInvalid(state, chunk) {
var er;
if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
return er;
}
// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes. This is to work around cases where hwm=0,
// such as the repl. Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
}
Readable.prototype.isPaused = function () {
return this._readableState.flowing === false;
};
// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
this._readableState.decoder = new StringDecoder(enc);
this._readableState.encoding = enc;
return this;
};
// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
if (n >= MAX_HWM) {
n = MAX_HWM;
} else {
// Get the next highest power of 2 to prevent increasing hwm excessively in
// tiny amounts
n--;
n |= n >>> 1;
n |= n >>> 2;
n |= n >>> 4;
n |= n >>> 8;
n |= n >>> 16;
n++;
}
return n;
}
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
if (n <= 0 || state.length === 0 && state.ended) return 0;
if (state.objectMode) return 1;
if (n !== n) {
// Only flow one buffer at a time
if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
}
// If we're asking for more than the current hwm, then raise the hwm.
if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
if (n <= state.length) return n;
// Don't have enough
if (!state.ended) {
state.needReadable = true;
return 0;
}
return state.length;
}
// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
debug('read', n);
n = parseInt(n, 10);
var state = this._readableState;
var nOrig = n;
if (n !== 0) state.emittedReadable = false;
// if we're doing read(0) to trigger a readable event, but we
// already have a bunch of data in the buffer, then just trigger
// the 'readable' event and move on.
if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
debug('read: emitReadable', state.length, state.ended);
if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
return null;
}
n = howMuchToRead(n, state);
// if we've ended, and we're now clear, then finish it up.
if (n === 0 && state.ended) {
if (state.length === 0) endReadable(this);
return null;
}
// All the actual chunk generation logic needs to be
// *below* the call to _read. The reason is that in certain
// synthetic stream cases, such as passthrough streams, _read
// may be a completely synchronous operation which may change
// the state of the read buffer, providing enough data when
// before there was *not* enough.
//
// So, the steps are:
// 1. Figure out what the state of things will be after we do
// a read from the buffer.
//
// 2. If that resulting state will trigger a _read, then call _read.
// Note that this may be asynchronous, or synchronous. Yes, it is
// deeply ugly to write APIs this way, but that still doesn't mean
// that the Readable class should behave improperly, as streams are
// designed to be sync/async agnostic.
// Take note if the _read call is sync or async (ie, if the read call
// has returned yet), so that we know whether or not it's safe to emit
// 'readable' etc.
//
// 3. Actually pull the requested chunks out of the buffer and return.
// if we need a readable event, then we need to do some reading.
var doRead = state.needReadable;
debug('need readable', doRead);
// if we currently have less than the highWaterMark, then also read some
if (state.length === 0 || state.length - n < state.highWaterMark) {
doRead = true;
debug('length less than watermark', doRead);
}
// however, if we've ended, then there's no point, and if we're already
// reading, then it's unnecessary.
if (state.ended || state.reading) {
doRead = false;
debug('reading or ended', doRead);
} else if (doRead) {
debug('do read');
state.reading = true;
state.sync = true;
// if the length is currently zero, then we *need* a readable event.
if (state.length === 0) state.needReadable = true;
// call internal read method
this._read(state.highWaterMark);
state.sync = false;
// If _read pushed data synchronously, then `reading` will be false,
// and we need to re-evaluate how much data we can return to the user.
if (!state.reading) n = howMuchToRead(nOrig, state);
}
var ret;
if (n > 0) ret = fromList(n, state);else ret = null;
if (ret === null) {
state.needReadable = true;
n = 0;
} else {
state.length -= n;
}
if (state.length === 0) {
// If we have nothing in the buffer, then we want to know
// as soon as we *do* get something into the buffer.
if (!state.ended) state.needReadable = true;
// If we tried to read() past the EOF, then emit end on the next tick.
if (nOrig !== n && state.ended) endReadable(this);
}
if (ret !== null) this.emit('data', ret);
return ret;
};
function onEofChunk(stream, state) {
if (state.ended) return;
if (state.decoder) {
var chunk = state.decoder.end();
if (chunk && chunk.length) {
state.buffer.push(chunk);
state.length += state.objectMode ? 1 : chunk.length;
}
}
state.ended = true;
// emit 'readable' now to make sure it gets picked up.
emitReadable(stream);
}
// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow. This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
var state = stream._readableState;
state.needReadable = false;
if (!state.emittedReadable) {
debug('emitReadable', state.flowing);
state.emittedReadable = true;
if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream);
}
}
function emitReadable_(stream) {
debug('emit readable');
stream.emit('readable');
flow(stream);
}
// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data. that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
if (!state.readingMore) {
state.readingMore = true;
processNextTick(maybeReadMore_, stream, state);
}
}
function maybeReadMore_(stream, state) {
var len = state.length;
while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
debug('maybeReadMore read 0');
stream.read(0);
if (len === state.length)
// didn't get any data, stop spinning.
break;else len = state.length;
}
state.readingMore = false;
}
// abstract method. to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
this.emit('error', new Error('_read() is not implemented'));
};
Readable.prototype.pipe = function (dest, pipeOpts) {
var src = this;
var state = this._readableState;
switch (state.pipesCount) {
case 0:
state.pipes = dest;
break;
case 1:
state.pipes = [state.pipes, dest];
break;
default:
state.pipes.push(dest);
break;
}
state.pipesCount += 1;
debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
var endFn = doEnd ? onend : unpipe;
if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn);
dest.on('unpipe', onunpipe);
function onunpipe(readable, unpipeInfo) {
debug('onunpipe');
if (readable === src) {
if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
unpipeInfo.hasUnpiped = true;
cleanup();
}
}
}
function onend() {
debug('onend');
dest.end();
}
// when the dest drains, it reduces the awaitDrain counter
// on the source. This would be more elegant with a .once()
// handler in flow(), but adding and removing repeatedly is
// too slow.
var ondrain = pipeOnDrain(src);
dest.on('drain', ondrain);
var cleanedUp = false;
function cleanup() {
debug('cleanup');
// cleanup event handlers once the pipe is broken
dest.removeListener('close', onclose);
dest.removeListener('finish', onfinish);
dest.removeListener('drain', ondrain);
dest.removeListener('error', onerror);
dest.removeListener('unpipe', onunpipe);
src.removeListener('end', onend);
src.removeListener('end', unpipe);
src.removeListener('data', ondata);
cleanedUp = true;
// if the reader is waiting for a drain event from this
// specific writer, then it would cause it to never start
// flowing again.
// So, if this is awaiting a drain, then we just call it now.
// If we don't know, then assume that we are waiting for one.
if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
}
// If the user pushes more data while we're writing to dest then we'll end up
// in ondata again. However, we only want to increase awaitDrain once because
// dest will only emit one 'drain' event for the multiple writes.
// => Introduce a guard on increasing awaitDrain.
var increasedAwaitDrain = false;
src.on('data', ondata);
function ondata(chunk) {
debug('ondata');
increasedAwaitDrain = false;
var ret = dest.write(chunk);
if (false === ret && !increasedAwaitDrain) {
// If the user unpiped during `dest.write()`, it is possible
// to get stuck in a permanently paused state if that write
// also returned false.
// => Check whether `dest` is still a piping destination.
if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
debug('false write response, pause', src._readableState.awaitDrain);
src._readableState.awaitDrain++;
increasedAwaitDrain = true;
}
src.pause();
}
}
// if the dest has an error, then stop piping into it.
// however, don't suppress the throwing behavior for this.
function onerror(er) {
debug('onerror', er);
unpipe();
dest.removeListener('error', onerror);
if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
}
// Make sure our error handler is attached before userland ones.
prependListener(dest, 'error', onerror);
// Both close and finish should trigger unpipe, but only once.
function onclose() {
dest.removeListener('finish', onfinish);
unpipe();
}
dest.once('close', onclose);
function onfinish() {
debug('onfinish');
dest.removeListener('close', onclose);
unpipe();
}
dest.once('finish', onfinish);
function unpipe() {
debug('unpipe');
src.unpipe(dest);
}
// tell the dest that it's being piped to
dest.emit('pipe', src);
// start the flow if it hasn't been started already.
if (!state.flowing) {
debug('pipe resume');
src.resume();
}
return dest;
};
function pipeOnDrain(src) {
return function () {
var state = src._readableState;
debug('pipeOnDrain', state.awaitDrain);
if (state.awaitDrain) state.awaitDrain--;
if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
state.flowing = true;
flow(src);
}
};
}
Readable.prototype.unpipe = function (dest) {
var state = this._readableState;
var unpipeInfo = { hasUnpiped: false };
// if we're not piping anywhere, then do nothing.
if (state.pipesCount === 0) return this;
// just one destination. most common case.
if (state.pipesCount === 1) {
// passed in one, but it's not the right one.
if (dest && dest !== state.pipes) return this;
if (!dest) dest = state.pipes;
// got a match.
state.pipes = null;
state.pipesCount = 0;
state.flowing = false;
if (dest) dest.emit('unpipe', this, unpipeInfo);
return this;
}
// slow case. multiple pipe destinations.
if (!dest) {
// remove all.
var dests = state.pipes;
var len = state.pipesCount;
state.pipes = null;
state.pipesCount = 0;
state.flowing = false;
for (var i = 0; i < len; i++) {
dests[i].emit('unpipe', this, unpipeInfo);
}return this;
}
// try to find the right one.
var index = indexOf(state.pipes, dest);
if (index === -1) return this;
state.pipes.splice(index, 1);
state.pipesCount -= 1;
if (state.pipesCount === 1) state.pipes = state.pipes[0];
dest.emit('unpipe', this, unpipeInfo);
return this;
};
// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
var res = Stream.prototype.on.call(this, ev, fn);
if (ev === 'data') {
// Start flowing on next tick if stream isn't explicitly paused
if (this._readableState.flowing !== false) this.resume();
} else if (ev === 'readable') {
var state = this._readableState;
if (!state.endEmitted && !state.readableListening) {
state.readableListening = state.needReadable = true;
state.emittedReadable = false;
if (!state.reading) {
processNextTick(nReadingNextTick, this);
} else if (state.length) {
emitReadable(this);
}
}
}
return res;
};
Readable.prototype.addListener = Readable.prototype.on;
function nReadingNextTick(self) {
debug('readable nexttick read 0');
self.read(0);
}
// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
var state = this._readableState;
if (!state.flowing) {
debug('resume');
state.flowing = true;
resume(this, state);
}
return this;
};
function resume(stream, state) {
if (!state.resumeScheduled) {
state.resumeScheduled = true;
processNextTick(resume_, stream, state);
}
}
function resume_(stream, state) {
if (!state.reading) {
debug('resume read 0');
stream.read(0);
}
state.resumeScheduled = false;
state.awaitDrain = 0;
stream.emit('resume');
flow(stream);
if (state.flowing && !state.reading) stream.read(0);
}
Readable.prototype.pause = function () {
debug('call pause flowing=%j', this._readableState.flowing);
if (false !== this._readableState.flowing) {
debug('pause');
this._readableState.flowing = false;
this.emit('pause');
}
return this;
};
function flow(stream) {
var state = stream._readableState;
debug('flow', state.flowing);
while (state.flowing && stream.read() !== null) {}
}
// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
var state = this._readableState;
var paused = false;
var self = this;
stream.on('end', function () {
debug('wrapped end');
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length) self.push(chunk);
}
self.push(null);
});
stream.on('data', function (chunk) {
debug('wrapped data');
if (state.decoder) chunk = state.decoder.write(chunk);
// don't skip over falsy values in objectMode
if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
var ret = self.push(chunk);
if (!ret) {
paused = true;
stream.pause();
}
});
// proxy all the other methods.
// important when wrapping filters and duplexes.
for (var i in stream) {
if (this[i] === undefined && typeof stream[i] === 'function') {
this[i] = function (method) {
return function () {
return stream[method].apply(stream, arguments);
};
}(i);
}
}
// proxy certain important events.
for (var n = 0; n < kProxyEvents.length; n++) {
stream.on(kProxyEvents[n], self.emit.bind(self, kProxyEvents[n]));
}
// when we try to consume some more bytes, simply unpause the
// underlying stream.
self._read = function (n) {
debug('wrapped _read', n);
if (paused) {
paused = false;
stream.resume();
}
};
return self;
};
// exposed for testing purposes only.
Readable._fromList = fromList;
// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
// nothing buffered
if (state.length === 0) return null;
var ret;
if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
// read it all, truncate the list
if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
state.buffer.clear();
} else {
// read part of list
ret = fromListPartial(n, state.buffer, state.decoder);
}
return ret;
}
// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
var ret;
if (n < list.head.data.length) {
// slice is the same for buffers and strings
ret = list.head.data.slice(0, n);
list.head.data = list.head.data.slice(n);
} else if (n === list.head.data.length) {
// first chunk is a perfect match
ret = list.shift();
} else {
// result spans more than one buffer
ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
}
return ret;
}
// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
var p = list.head;
var c = 1;
var ret = p.data;
n -= ret.length;
while (p = p.next) {
var str = p.data;
var nb = n > str.length ? str.length : n;
if (nb === str.length) ret += str;else ret += str.slice(0, n);
n -= nb;
if (n === 0) {
if (nb === str.length) {
++c;
if (p.next) list.head = p.next;else list.head = list.tail = null;
} else {
list.head = p;
p.data = str.slice(nb);
}
break;
}
++c;
}
list.length -= c;
return ret;
}
// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
var ret = Buffer.allocUnsafe(n);
var p = list.head;
var c = 1;
p.data.copy(ret);
n -= p.data.length;
while (p = p.next) {
var buf = p.data;
var nb = n > buf.length ? buf.length : n;
buf.copy(ret, ret.length - n, 0, nb);
n -= nb;
if (n === 0) {
if (nb === buf.length) {
++c;
if (p.next) list.head = p.next;else list.head = list.tail = null;
} else {
list.head = p;
p.data = buf.slice(nb);
}
break;
}
++c;
}
list.length -= c;
return ret;
}
function endReadable(stream) {
var state = stream._readableState;
// If we get here before consuming all the bytes, then that is a
// bug in node. Should never happen.
if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
if (!state.endEmitted) {
state.ended = true;
processNextTick(endReadableNT, state, stream);
}
}
function endReadableNT(state, stream) {
// Check that we didn't get one last unshift.
if (!state.endEmitted && state.length === 0) {
state.endEmitted = true;
stream.readable = false;
stream.emit('end');
}
}
function forEach(xs, f) {
for (var i = 0, l = xs.length; i < l; i++) {
f(xs[i], i);
}
}
function indexOf(xs, x) {
for (var i = 0, l = xs.length; i < l; i++) {
if (xs[i] === x) return i;
}
return -1;
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":36,"./internal/streams/BufferList":41,"./internal/streams/destroy":42,"./internal/streams/stream":43,"_process":30,"core-util-is":13,"events":16,"inherits":18,"isarray":20,"process-nextick-args":29,"safe-buffer":46,"string_decoder/":48,"util":11}],39:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data. Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored. (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation. For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes. When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up. When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer. When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks. If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk. However,
// a pathological inflate type of transform can cause excessive buffering
// here. For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output. In this case, you could write a very small
// amount of input, and end up with a very large amount of output. In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform. A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
'use strict';
module.exports = Transform;
var Duplex = require('./_stream_duplex');
/**/
var util = require('core-util-is');
util.inherits = require('inherits');
/* */
util.inherits(Transform, Duplex);
function TransformState(stream) {
this.afterTransform = function (er, data) {
return afterTransform(stream, er, data);
};
this.needTransform = false;
this.transforming = false;
this.writecb = null;
this.writechunk = null;
this.writeencoding = null;
}
function afterTransform(stream, er, data) {
var ts = stream._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (!cb) {
return stream.emit('error', new Error('write callback called multiple times'));
}
ts.writechunk = null;
ts.writecb = null;
if (data !== null && data !== undefined) stream.push(data);
cb(er);
var rs = stream._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
stream._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform)) return new Transform(options);
Duplex.call(this, options);
this._transformState = new TransformState(this);
var stream = this;
// start out asking for a readable event once data is transformed.
this._readableState.needReadable = true;
// we have implemented the _read method, and done the other things
// that Readable wants before the first _read call, so unset the
// sync guard flag.
this._readableState.sync = false;
if (options) {
if (typeof options.transform === 'function') this._transform = options.transform;
if (typeof options.flush === 'function') this._flush = options.flush;
}
// When the writable side finishes, then flush out anything remaining.
this.once('prefinish', function () {
if (typeof this._flush === 'function') this._flush(function (er, data) {
done(stream, er, data);
});else done(stream);
});
}
Transform.prototype.push = function (chunk, encoding) {
this._transformState.needTransform = false;
return Duplex.prototype.push.call(this, chunk, encoding);
};
// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side. You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk. If you pass
// an error, then that'll put the hurt on the whole operation. If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
throw new Error('_transform() is not implemented');
};
Transform.prototype._write = function (chunk, encoding, cb) {
var ts = this._transformState;
ts.writecb = cb;
ts.writechunk = chunk;
ts.writeencoding = encoding;
if (!ts.transforming) {
var rs = this._readableState;
if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
}
};
// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
var ts = this._transformState;
if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
ts.transforming = true;
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
} else {
// mark that we need a transform, so that any data that comes in
// will get processed, now that we've asked for it.
ts.needTransform = true;
}
};
Transform.prototype._destroy = function (err, cb) {
var _this = this;
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
_this.emit('close');
});
};
function done(stream, er, data) {
if (er) return stream.emit('error', er);
if (data !== null && data !== undefined) stream.push(data);
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
var ws = stream._writableState;
var ts = stream._transformState;
if (ws.length) throw new Error('Calling transform done when ws.length != 0');
if (ts.transforming) throw new Error('Calling transform done when still transforming');
return stream.push(null);
}
},{"./_stream_duplex":36,"core-util-is":13,"inherits":18}],40:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.
'use strict';
/**/
var processNextTick = require('process-nextick-args');
/* */
module.exports = Writable;
/* */
function WriteReq(chunk, encoding, cb) {
this.chunk = chunk;
this.encoding = encoding;
this.callback = cb;
this.next = null;
}
// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
var _this = this;
this.next = null;
this.entry = null;
this.finish = function () {
onCorkedFinish(_this, state);
};
}
/* */
/**/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
/* */
/**/
var Duplex;
/* */
Writable.WritableState = WritableState;
/**/
var util = require('core-util-is');
util.inherits = require('inherits');
/* */
/**/
var internalUtil = {
deprecate: require('util-deprecate')
};
/* */
/**/
var Stream = require('./internal/streams/stream');
/* */
/**/
var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/* */
var destroyImpl = require('./internal/streams/destroy');
util.inherits(Writable, Stream);
function nop() {}
function WritableState(options, stream) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {};
// object stream flag to indicate whether or not this stream
// contains buffers or objects.
this.objectMode = !!options.objectMode;
if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
// the point at which write() starts returning false
// Note: 0 is a valid value, means that we always return false if
// the entire buffer is not flushed immediately on write()
var hwm = options.highWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
// cast to ints.
this.highWaterMark = Math.floor(this.highWaterMark);
// if _final has been called
this.finalCalled = false;
// drain event flag.
this.needDrain = false;
// at the start of calling end()
this.ending = false;
// when end() has been called, and returned
this.ended = false;
// when 'finish' is emitted
this.finished = false;
// has it been destroyed
this.destroyed = false;
// should we decode strings into buffers before passing to _write?
// this is here so that some node-core streams can optimize string
// handling at a lower level.
var noDecode = options.decodeStrings === false;
this.decodeStrings = !noDecode;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// not an actual buffer we keep track of, but a measurement
// of how much we're waiting to get pushed to some underlying
// socket or file.
this.length = 0;
// a flag to see when we're in the middle of a write.
this.writing = false;
// when true all writes will be buffered until .uncork() call
this.corked = 0;
// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, because any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
this.sync = true;
// a flag to know if we're processing previously buffered items, which
// may call the _write() callback in the same tick, so that we don't
// end up in an overlapped onwrite situation.
this.bufferProcessing = false;
// the callback that's passed to _write(chunk,cb)
this.onwrite = function (er) {
onwrite(stream, er);
};
// the callback that the user supplies to write(chunk,encoding,cb)
this.writecb = null;
// the amount that is being written when _write is called.
this.writelen = 0;
this.bufferedRequest = null;
this.lastBufferedRequest = null;
// number of pending user-supplied write callbacks
// this must be 0 before 'finish' can be emitted
this.pendingcb = 0;
// emit prefinish if the only thing we're waiting for is _write cbs
// This is relevant for synchronous Transform streams
this.prefinished = false;
// True if the error was already emitted and should not be thrown again
this.errorEmitted = false;
// count buffered requests
this.bufferedRequestCount = 0;
// allocate the first CorkedRequest, there is always
// one allocated and free to use, and we maintain at most two
this.corkedRequestsFree = new CorkedRequest(this);
}
WritableState.prototype.getBuffer = function getBuffer() {
var current = this.bufferedRequest;
var out = [];
while (current) {
out.push(current);
current = current.next;
}
return out;
};
(function () {
try {
Object.defineProperty(WritableState.prototype, 'buffer', {
get: internalUtil.deprecate(function () {
return this.getBuffer();
}, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
});
} catch (_) {}
})();
// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
realHasInstance = Function.prototype[Symbol.hasInstance];
Object.defineProperty(Writable, Symbol.hasInstance, {
value: function (object) {
if (realHasInstance.call(this, object)) return true;
return object && object._writableState instanceof WritableState;
}
});
} else {
realHasInstance = function (object) {
return object instanceof this;
};
}
function Writable(options) {
Duplex = Duplex || require('./_stream_duplex');
// Writable ctor is applied to Duplexes, too.
// `realHasInstance` is necessary because using plain `instanceof`
// would return false, as no `_writableState` property is attached.
// Trying to use the custom `instanceof` for Writable here will also break the
// Node.js LazyTransform implementation, which has a non-trivial getter for
// `_writableState` that would lead to infinite recursion.
if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
return new Writable(options);
}
this._writableState = new WritableState(options, this);
// legacy.
this.writable = true;
if (options) {
if (typeof options.write === 'function') this._write = options.write;
if (typeof options.writev === 'function') this._writev = options.writev;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
if (typeof options.final === 'function') this._final = options.final;
}
Stream.call(this);
}
// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
this.emit('error', new Error('Cannot pipe, not readable'));
};
function writeAfterEnd(stream, cb) {
var er = new Error('write after end');
// TODO: defer error events consistently everywhere, not just the cb
stream.emit('error', er);
processNextTick(cb, er);
}
// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
var valid = true;
var er = false;
if (chunk === null) {
er = new TypeError('May not write null values to stream');
} else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
if (er) {
stream.emit('error', er);
processNextTick(cb, er);
valid = false;
}
return valid;
}
Writable.prototype.write = function (chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
var isBuf = _isUint8Array(chunk) && !state.objectMode;
if (isBuf && !Buffer.isBuffer(chunk)) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
if (typeof cb !== 'function') cb = nop;
if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
state.pendingcb++;
ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
}
return ret;
};
Writable.prototype.cork = function () {
var state = this._writableState;
state.corked++;
};
Writable.prototype.uncork = function () {
var state = this._writableState;
if (state.corked) {
state.corked--;
if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
}
};
Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
// node::ParseEncoding() requires lower case.
if (typeof encoding === 'string') encoding = encoding.toLowerCase();
if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
this._writableState.defaultEncoding = encoding;
return this;
};
function decodeChunk(state, chunk, encoding) {
if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
chunk = Buffer.from(chunk, encoding);
}
return chunk;
}
// if we're already writing something, then just put this
// in the queue, and wait our turn. Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
if (!isBuf) {
var newChunk = decodeChunk(state, chunk, encoding);
if (chunk !== newChunk) {
isBuf = true;
encoding = 'buffer';
chunk = newChunk;
}
}
var len = state.objectMode ? 1 : chunk.length;
state.length += len;
var ret = state.length < state.highWaterMark;
// we must ensure that previous needDrain will not be reset to false.
if (!ret) state.needDrain = true;
if (state.writing || state.corked) {
var last = state.lastBufferedRequest;
state.lastBufferedRequest = {
chunk: chunk,
encoding: encoding,
isBuf: isBuf,
callback: cb,
next: null
};
if (last) {
last.next = state.lastBufferedRequest;
} else {
state.bufferedRequest = state.lastBufferedRequest;
}
state.bufferedRequestCount += 1;
} else {
doWrite(stream, state, false, len, chunk, encoding, cb);
}
return ret;
}
function doWrite(stream, state, writev, len, chunk, encoding, cb) {
state.writelen = len;
state.writecb = cb;
state.writing = true;
state.sync = true;
if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
state.sync = false;
}
function onwriteError(stream, state, sync, er, cb) {
--state.pendingcb;
if (sync) {
// defer the callback if we are being called synchronously
// to avoid piling up things on the stack
processNextTick(cb, er);
// this can emit finish, and it will always happen
// after error
processNextTick(finishMaybe, stream, state);
stream._writableState.errorEmitted = true;
stream.emit('error', er);
} else {
// the caller expect this to happen before if
// it is async
cb(er);
stream._writableState.errorEmitted = true;
stream.emit('error', er);
// this can emit finish, but finish must
// always follow error
finishMaybe(stream, state);
}
}
function onwriteStateUpdate(state) {
state.writing = false;
state.writecb = null;
state.length -= state.writelen;
state.writelen = 0;
}
function onwrite(stream, er) {
var state = stream._writableState;
var sync = state.sync;
var cb = state.writecb;
onwriteStateUpdate(state);
if (er) onwriteError(stream, state, sync, er, cb);else {
// Check if we're actually ready to finish, but don't emit yet
var finished = needFinish(state);
if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
clearBuffer(stream, state);
}
if (sync) {
/**/
asyncWrite(afterWrite, stream, state, finished, cb);
/* */
} else {
afterWrite(stream, state, finished, cb);
}
}
}
function afterWrite(stream, state, finished, cb) {
if (!finished) onwriteDrain(stream, state);
state.pendingcb--;
cb();
finishMaybe(stream, state);
}
// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
if (state.length === 0 && state.needDrain) {
state.needDrain = false;
stream.emit('drain');
}
}
// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
state.bufferProcessing = true;
var entry = state.bufferedRequest;
if (stream._writev && entry && entry.next) {
// Fast case, write everything using _writev()
var l = state.bufferedRequestCount;
var buffer = new Array(l);
var holder = state.corkedRequestsFree;
holder.entry = entry;
var count = 0;
var allBuffers = true;
while (entry) {
buffer[count] = entry;
if (!entry.isBuf) allBuffers = false;
entry = entry.next;
count += 1;
}
buffer.allBuffers = allBuffers;
doWrite(stream, state, true, state.length, buffer, '', holder.finish);
// doWrite is almost always async, defer these to save a bit of time
// as the hot path ends with doWrite
state.pendingcb++;
state.lastBufferedRequest = null;
if (holder.next) {
state.corkedRequestsFree = holder.next;
holder.next = null;
} else {
state.corkedRequestsFree = new CorkedRequest(state);
}
} else {
// Slow case, write chunks one-by-one
while (entry) {
var chunk = entry.chunk;
var encoding = entry.encoding;
var cb = entry.callback;
var len = state.objectMode ? 1 : chunk.length;
doWrite(stream, state, false, len, chunk, encoding, cb);
entry = entry.next;
// if we didn't call the onwrite immediately, then
// it means that we need to wait until it does.
// also, that means that the chunk and cb are currently
// being processed, so move the buffer counter past them.
if (state.writing) {
break;
}
}
if (entry === null) state.lastBufferedRequest = null;
}
state.bufferedRequestCount = 0;
state.bufferedRequest = entry;
state.bufferProcessing = false;
}
Writable.prototype._write = function (chunk, encoding, cb) {
cb(new Error('_write() is not implemented'));
};
Writable.prototype._writev = null;
Writable.prototype.end = function (chunk, encoding, cb) {
var state = this._writableState;
if (typeof chunk === 'function') {
cb = chunk;
chunk = null;
encoding = null;
} else if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
// .end() fully uncorks
if (state.corked) {
state.corked = 1;
this.uncork();
}
// ignore unnecessary end() calls.
if (!state.ending && !state.finished) endWritable(this, state, cb);
};
function needFinish(state) {
return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}
function callFinal(stream, state) {
stream._final(function (err) {
state.pendingcb--;
if (err) {
stream.emit('error', err);
}
state.prefinished = true;
stream.emit('prefinish');
finishMaybe(stream, state);
});
}
function prefinish(stream, state) {
if (!state.prefinished && !state.finalCalled) {
if (typeof stream._final === 'function') {
state.pendingcb++;
state.finalCalled = true;
processNextTick(callFinal, stream, state);
} else {
state.prefinished = true;
stream.emit('prefinish');
}
}
}
function finishMaybe(stream, state) {
var need = needFinish(state);
if (need) {
prefinish(stream, state);
if (state.pendingcb === 0) {
state.finished = true;
stream.emit('finish');
}
}
return need;
}
function endWritable(stream, state, cb) {
state.ending = true;
finishMaybe(stream, state);
if (cb) {
if (state.finished) processNextTick(cb);else stream.once('finish', cb);
}
state.ended = true;
stream.writable = false;
}
function onCorkedFinish(corkReq, state, err) {
var entry = corkReq.entry;
corkReq.entry = null;
while (entry) {
var cb = entry.callback;
state.pendingcb--;
cb(err);
entry = entry.next;
}
if (state.corkedRequestsFree) {
state.corkedRequestsFree.next = corkReq;
} else {
state.corkedRequestsFree = corkReq;
}
}
Object.defineProperty(Writable.prototype, 'destroyed', {
get: function () {
if (this._writableState === undefined) {
return false;
}
return this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._writableState) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._writableState.destroyed = value;
}
});
Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
this.end();
cb(err);
};
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":36,"./internal/streams/destroy":42,"./internal/streams/stream":43,"_process":30,"core-util-is":13,"inherits":18,"process-nextick-args":29,"safe-buffer":46,"util-deprecate":51}],41:[function(require,module,exports){
'use strict';
/**/
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Buffer = require('safe-buffer').Buffer;
/* */
function copyBuffer(src, target, offset) {
src.copy(target, offset);
}
module.exports = function () {
function BufferList() {
_classCallCheck(this, BufferList);
this.head = null;
this.tail = null;
this.length = 0;
}
BufferList.prototype.push = function push(v) {
var entry = { data: v, next: null };
if (this.length > 0) this.tail.next = entry;else this.head = entry;
this.tail = entry;
++this.length;
};
BufferList.prototype.unshift = function unshift(v) {
var entry = { data: v, next: this.head };
if (this.length === 0) this.tail = entry;
this.head = entry;
++this.length;
};
BufferList.prototype.shift = function shift() {
if (this.length === 0) return;
var ret = this.head.data;
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
--this.length;
return ret;
};
BufferList.prototype.clear = function clear() {
this.head = this.tail = null;
this.length = 0;
};
BufferList.prototype.join = function join(s) {
if (this.length === 0) return '';
var p = this.head;
var ret = '' + p.data;
while (p = p.next) {
ret += s + p.data;
}return ret;
};
BufferList.prototype.concat = function concat(n) {
if (this.length === 0) return Buffer.alloc(0);
if (this.length === 1) return this.head.data;
var ret = Buffer.allocUnsafe(n >>> 0);
var p = this.head;
var i = 0;
while (p) {
copyBuffer(p.data, ret, i);
i += p.data.length;
p = p.next;
}
return ret;
};
return BufferList;
}();
},{"safe-buffer":46}],42:[function(require,module,exports){
'use strict';
/**/
var processNextTick = require('process-nextick-args');
/* */
// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
var _this = this;
var readableDestroyed = this._readableState && this._readableState.destroyed;
var writableDestroyed = this._writableState && this._writableState.destroyed;
if (readableDestroyed || writableDestroyed) {
if (cb) {
cb(err);
} else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
processNextTick(emitErrorNT, this, err);
}
return;
}
// we set destroyed to true before firing error callbacks in order
// to make it re-entrance safe in case destroy() is called within callbacks
if (this._readableState) {
this._readableState.destroyed = true;
}
// if this is a duplex stream mark the writable part as destroyed as well
if (this._writableState) {
this._writableState.destroyed = true;
}
this._destroy(err || null, function (err) {
if (!cb && err) {
processNextTick(emitErrorNT, _this, err);
if (_this._writableState) {
_this._writableState.errorEmitted = true;
}
} else if (cb) {
cb(err);
}
});
}
function undestroy() {
if (this._readableState) {
this._readableState.destroyed = false;
this._readableState.reading = false;
this._readableState.ended = false;
this._readableState.endEmitted = false;
}
if (this._writableState) {
this._writableState.destroyed = false;
this._writableState.ended = false;
this._writableState.ending = false;
this._writableState.finished = false;
this._writableState.errorEmitted = false;
}
}
function emitErrorNT(self, err) {
self.emit('error', err);
}
module.exports = {
destroy: destroy,
undestroy: undestroy
};
},{"process-nextick-args":29}],43:[function(require,module,exports){
module.exports = require('events').EventEmitter;
},{"events":16}],44:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');
},{"./lib/_stream_duplex.js":36,"./lib/_stream_passthrough.js":37,"./lib/_stream_readable.js":38,"./lib/_stream_transform.js":39,"./lib/_stream_writable.js":40}],45:[function(require,module,exports){
'use strict'
function ReInterval (callback, interval, args) {
var self = this;
this._callback = callback;
this._args = args;
this._interval = setInterval(callback, interval, this._args);
this.reschedule = function (interval) {
// if no interval entered, use the interval passed in on creation
if (!interval)
interval = self._interval;
if (self._interval)
clearInterval(self._interval);
self._interval = setInterval(self._callback, interval, self._args);
};
this.clear = function () {
if (self._interval) {
clearInterval(self._interval);
self._interval = undefined;
}
};
this.destroy = function () {
if (self._interval) {
clearInterval(self._interval);
}
self._callback = undefined;
self._interval = undefined;
self._args = undefined;
};
}
function reInterval () {
if (typeof arguments[0] !== 'function')
throw new Error('callback needed');
if (typeof arguments[1] !== 'number')
throw new Error('interval needed');
var args;
if (arguments.length > 0) {
args = new Array(arguments.length - 2);
for (var i = 0; i < args.length; i++) {
args[i] = arguments[i + 2];
}
}
return new ReInterval(arguments[0], arguments[1], args);
}
module.exports = reInterval;
},{}],46:[function(require,module,exports){
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer
// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
for (var key in src) {
dst[key] = src[key]
}
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
module.exports = buffer
} else {
// Copy properties from require('buffer')
copyProps(buffer, exports)
exports.Buffer = SafeBuffer
}
function SafeBuffer (arg, encodingOrOffset, length) {
return Buffer(arg, encodingOrOffset, length)
}
// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)
SafeBuffer.from = function (arg, encodingOrOffset, length) {
if (typeof arg === 'number') {
throw new TypeError('Argument must not be a number')
}
return Buffer(arg, encodingOrOffset, length)
}
SafeBuffer.alloc = function (size, fill, encoding) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
var buf = Buffer(size)
if (fill !== undefined) {
if (typeof encoding === 'string') {
buf.fill(fill, encoding)
} else {
buf.fill(fill)
}
} else {
buf.fill(0)
}
return buf
}
SafeBuffer.allocUnsafe = function (size) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
return Buffer(size)
}
SafeBuffer.allocUnsafeSlow = function (size) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
return buffer.SlowBuffer(size)
}
},{"buffer":12}],47:[function(require,module,exports){
module.exports = shift
function shift (stream) {
var rs = stream._readableState
if (!rs) return null
return rs.objectMode ? stream.read() : stream.read(getStateLength(rs))
}
function getStateLength (state) {
if (state.buffer.length) {
// Since node 6.3.0 state.buffer is a BufferList not an array
if (state.buffer.head) {
return state.buffer.head.data.length
}
return state.buffer[0].length
}
return state.length
}
},{}],48:[function(require,module,exports){
'use strict';
var Buffer = require('safe-buffer').Buffer;
var isEncoding = Buffer.isEncoding || function (encoding) {
encoding = '' + encoding;
switch (encoding && encoding.toLowerCase()) {
case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
return true;
default:
return false;
}
};
function _normalizeEncoding(enc) {
if (!enc) return 'utf8';
var retried;
while (true) {
switch (enc) {
case 'utf8':
case 'utf-8':
return 'utf8';
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return 'utf16le';
case 'latin1':
case 'binary':
return 'latin1';
case 'base64':
case 'ascii':
case 'hex':
return enc;
default:
if (retried) return; // undefined
enc = ('' + enc).toLowerCase();
retried = true;
}
}
};
// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
var nenc = _normalizeEncoding(enc);
if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
return nenc || enc;
}
// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
this.encoding = normalizeEncoding(encoding);
var nb;
switch (this.encoding) {
case 'utf16le':
this.text = utf16Text;
this.end = utf16End;
nb = 4;
break;
case 'utf8':
this.fillLast = utf8FillLast;
nb = 4;
break;
case 'base64':
this.text = base64Text;
this.end = base64End;
nb = 3;
break;
default:
this.write = simpleWrite;
this.end = simpleEnd;
return;
}
this.lastNeed = 0;
this.lastTotal = 0;
this.lastChar = Buffer.allocUnsafe(nb);
}
StringDecoder.prototype.write = function (buf) {
if (buf.length === 0) return '';
var r;
var i;
if (this.lastNeed) {
r = this.fillLast(buf);
if (r === undefined) return '';
i = this.lastNeed;
this.lastNeed = 0;
} else {
i = 0;
}
if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
return r || '';
};
StringDecoder.prototype.end = utf8End;
// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;
// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
if (this.lastNeed <= buf.length) {
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
}
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
this.lastNeed -= buf.length;
};
// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte.
function utf8CheckByte(byte) {
if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
return -1;
}
// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
var j = buf.length - 1;
if (j < i) return 0;
var nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 1;
return nb;
}
if (--j < i) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 2;
return nb;
}
if (--j < i) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) {
if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
}
return nb;
}
return 0;
}
// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// UTF-8 replacement characters ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
if ((buf[0] & 0xC0) !== 0x80) {
self.lastNeed = 0;
return '\ufffd'.repeat(p);
}
if (self.lastNeed > 1 && buf.length > 1) {
if ((buf[1] & 0xC0) !== 0x80) {
self.lastNeed = 1;
return '\ufffd'.repeat(p + 1);
}
if (self.lastNeed > 2 && buf.length > 2) {
if ((buf[2] & 0xC0) !== 0x80) {
self.lastNeed = 2;
return '\ufffd'.repeat(p + 2);
}
}
}
}
// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
var p = this.lastTotal - this.lastNeed;
var r = utf8CheckExtraBytes(this, buf, p);
if (r !== undefined) return r;
if (this.lastNeed <= buf.length) {
buf.copy(this.lastChar, p, 0, this.lastNeed);
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
}
buf.copy(this.lastChar, p, 0, buf.length);
this.lastNeed -= buf.length;
}
// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
var total = utf8CheckIncomplete(this, buf, i);
if (!this.lastNeed) return buf.toString('utf8', i);
this.lastTotal = total;
var end = buf.length - (total - this.lastNeed);
buf.copy(this.lastChar, 0, end);
return buf.toString('utf8', i, end);
}
// For UTF-8, a replacement character for each buffered byte of a (partial)
// character needs to be added to the output.
function utf8End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + '\ufffd'.repeat(this.lastTotal - this.lastNeed);
return r;
}
// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
if ((buf.length - i) % 2 === 0) {
var r = buf.toString('utf16le', i);
if (r) {
var c = r.charCodeAt(r.length - 1);
if (c >= 0xD800 && c <= 0xDBFF) {
this.lastNeed = 2;
this.lastTotal = 4;
this.lastChar[0] = buf[buf.length - 2];
this.lastChar[1] = buf[buf.length - 1];
return r.slice(0, -1);
}
}
return r;
}
this.lastNeed = 1;
this.lastTotal = 2;
this.lastChar[0] = buf[buf.length - 1];
return buf.toString('utf16le', i, buf.length - 1);
}
// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) {
var end = this.lastTotal - this.lastNeed;
return r + this.lastChar.toString('utf16le', 0, end);
}
return r;
}
function base64Text(buf, i) {
var n = (buf.length - i) % 3;
if (n === 0) return buf.toString('base64', i);
this.lastNeed = 3 - n;
this.lastTotal = 3;
if (n === 1) {
this.lastChar[0] = buf[buf.length - 1];
} else {
this.lastChar[0] = buf[buf.length - 2];
this.lastChar[1] = buf[buf.length - 1];
}
return buf.toString('base64', i, buf.length - n);
}
function base64End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
return r;
}
// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
return buf.toString(this.encoding);
}
function simpleEnd(buf) {
return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":46}],49:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
var punycode = require('punycode');
var util = require('./util');
exports.parse = urlParse;
exports.resolve = urlResolve;
exports.resolveObject = urlResolveObject;
exports.format = urlFormat;
exports.Url = Url;
function Url() {
this.protocol = null;
this.slashes = null;
this.auth = null;
this.host = null;
this.port = null;
this.hostname = null;
this.hash = null;
this.search = null;
this.query = null;
this.pathname = null;
this.path = null;
this.href = null;
}
// Reference: RFC 3986, RFC 1808, RFC 2396
// define these here so at least they only have to be
// compiled once on the first module load.
var protocolPattern = /^([a-z0-9.+-]+:)/i,
portPattern = /:[0-9]*$/,
// Special case for a simple path URL
simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/,
// RFC 2396: characters reserved for delimiting URLs.
// We actually just auto-escape these.
delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'],
// RFC 2396: characters not allowed for various reasons.
unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims),
// Allowed by RFCs, but cause of XSS attacks. Always escape these.
autoEscape = ['\''].concat(unwise),
// Characters that are never ever allowed in a hostname.
// Note that any invalid chars are also handled, but these
// are the ones that are *expected* to be seen, so we fast-path
// them.
nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),
hostEndingChars = ['/', '?', '#'],
hostnameMaxLen = 255,
hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/,
hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/,
// protocols that can allow "unsafe" and "unwise" chars.
unsafeProtocol = {
'javascript': true,
'javascript:': true
},
// protocols that never have a hostname.
hostlessProtocol = {
'javascript': true,
'javascript:': true
},
// protocols that always contain a // bit.
slashedProtocol = {
'http': true,
'https': true,
'ftp': true,
'gopher': true,
'file': true,
'http:': true,
'https:': true,
'ftp:': true,
'gopher:': true,
'file:': true
},
querystring = require('querystring');
function urlParse(url, parseQueryString, slashesDenoteHost) {
if (url && util.isObject(url) && url instanceof Url) return url;
var u = new Url;
u.parse(url, parseQueryString, slashesDenoteHost);
return u;
}
Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
if (!util.isString(url)) {
throw new TypeError("Parameter 'url' must be a string, not " + typeof url);
}
// Copy chrome, IE, opera backslash-handling behavior.
// Back slashes before the query string get converted to forward slashes
// See: https://code.google.com/p/chromium/issues/detail?id=25916
var queryIndex = url.indexOf('?'),
splitter =
(queryIndex !== -1 && queryIndex < url.indexOf('#')) ? '?' : '#',
uSplit = url.split(splitter),
slashRegex = /\\/g;
uSplit[0] = uSplit[0].replace(slashRegex, '/');
url = uSplit.join(splitter);
var rest = url;
// trim before proceeding.
// This is to support parse stuff like " http://foo.com \n"
rest = rest.trim();
if (!slashesDenoteHost && url.split('#').length === 1) {
// Try fast path regexp
var simplePath = simplePathPattern.exec(rest);
if (simplePath) {
this.path = rest;
this.href = rest;
this.pathname = simplePath[1];
if (simplePath[2]) {
this.search = simplePath[2];
if (parseQueryString) {
this.query = querystring.parse(this.search.substr(1));
} else {
this.query = this.search.substr(1);
}
} else if (parseQueryString) {
this.search = '';
this.query = {};
}
return this;
}
}
var proto = protocolPattern.exec(rest);
if (proto) {
proto = proto[0];
var lowerProto = proto.toLowerCase();
this.protocol = lowerProto;
rest = rest.substr(proto.length);
}
// figure out if it's got a host
// user@server is *always* interpreted as a hostname, and url
// resolution will treat //foo/bar as host=foo,path=bar because that's
// how the browser resolves relative URLs.
if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
var slashes = rest.substr(0, 2) === '//';
if (slashes && !(proto && hostlessProtocol[proto])) {
rest = rest.substr(2);
this.slashes = true;
}
}
if (!hostlessProtocol[proto] &&
(slashes || (proto && !slashedProtocol[proto]))) {
// there's a hostname.
// the first instance of /, ?, ;, or # ends the host.
//
// If there is an @ in the hostname, then non-host chars *are* allowed
// to the left of the last @ sign, unless some host-ending character
// comes *before* the @-sign.
// URLs are obnoxious.
//
// ex:
// http://a@b@c/ => user:a@b host:c
// http://a@b?@c => user:a host:c path:/?@c
// v0.12 TODO(isaacs): This is not quite how Chrome does things.
// Review our test case against browsers more comprehensively.
// find the first instance of any hostEndingChars
var hostEnd = -1;
for (var i = 0; i < hostEndingChars.length; i++) {
var hec = rest.indexOf(hostEndingChars[i]);
if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
hostEnd = hec;
}
// at this point, either we have an explicit point where the
// auth portion cannot go past, or the last @ char is the decider.
var auth, atSign;
if (hostEnd === -1) {
// atSign can be anywhere.
atSign = rest.lastIndexOf('@');
} else {
// atSign must be in auth portion.
// http://a@b/c@d => host:b auth:a path:/c@d
atSign = rest.lastIndexOf('@', hostEnd);
}
// Now we have a portion which is definitely the auth.
// Pull that off.
if (atSign !== -1) {
auth = rest.slice(0, atSign);
rest = rest.slice(atSign + 1);
this.auth = decodeURIComponent(auth);
}
// the host is the remaining to the left of the first non-host char
hostEnd = -1;
for (var i = 0; i < nonHostChars.length; i++) {
var hec = rest.indexOf(nonHostChars[i]);
if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
hostEnd = hec;
}
// if we still have not hit it, then the entire thing is a host.
if (hostEnd === -1)
hostEnd = rest.length;
this.host = rest.slice(0, hostEnd);
rest = rest.slice(hostEnd);
// pull out port.
this.parseHost();
// we've indicated that there is a hostname,
// so even if it's empty, it has to be present.
this.hostname = this.hostname || '';
// if hostname begins with [ and ends with ]
// assume that it's an IPv6 address.
var ipv6Hostname = this.hostname[0] === '[' &&
this.hostname[this.hostname.length - 1] === ']';
// validate a little.
if (!ipv6Hostname) {
var hostparts = this.hostname.split(/\./);
for (var i = 0, l = hostparts.length; i < l; i++) {
var part = hostparts[i];
if (!part) continue;
if (!part.match(hostnamePartPattern)) {
var newpart = '';
for (var j = 0, k = part.length; j < k; j++) {
if (part.charCodeAt(j) > 127) {
// we replace non-ASCII char with a temporary placeholder
// we need this to make sure size of hostname is not
// broken by replacing non-ASCII by nothing
newpart += 'x';
} else {
newpart += part[j];
}
}
// we test again with ASCII char only
if (!newpart.match(hostnamePartPattern)) {
var validParts = hostparts.slice(0, i);
var notHost = hostparts.slice(i + 1);
var bit = part.match(hostnamePartStart);
if (bit) {
validParts.push(bit[1]);
notHost.unshift(bit[2]);
}
if (notHost.length) {
rest = '/' + notHost.join('.') + rest;
}
this.hostname = validParts.join('.');
break;
}
}
}
}
if (this.hostname.length > hostnameMaxLen) {
this.hostname = '';
} else {
// hostnames are always lower case.
this.hostname = this.hostname.toLowerCase();
}
if (!ipv6Hostname) {
// IDNA Support: Returns a punycoded representation of "domain".
// It only converts parts of the domain name that
// have non-ASCII characters, i.e. it doesn't matter if
// you call it with a domain that already is ASCII-only.
this.hostname = punycode.toASCII(this.hostname);
}
var p = this.port ? ':' + this.port : '';
var h = this.hostname || '';
this.host = h + p;
this.href += this.host;
// strip [ and ] from the hostname
// the host field still retains them, though
if (ipv6Hostname) {
this.hostname = this.hostname.substr(1, this.hostname.length - 2);
if (rest[0] !== '/') {
rest = '/' + rest;
}
}
}
// now rest is set to the post-host stuff.
// chop off any delim chars.
if (!unsafeProtocol[lowerProto]) {
// First, make 100% sure that any "autoEscape" chars get
// escaped, even if encodeURIComponent doesn't think they
// need to be.
for (var i = 0, l = autoEscape.length; i < l; i++) {
var ae = autoEscape[i];
if (rest.indexOf(ae) === -1)
continue;
var esc = encodeURIComponent(ae);
if (esc === ae) {
esc = escape(ae);
}
rest = rest.split(ae).join(esc);
}
}
// chop off from the tail first.
var hash = rest.indexOf('#');
if (hash !== -1) {
// got a fragment string.
this.hash = rest.substr(hash);
rest = rest.slice(0, hash);
}
var qm = rest.indexOf('?');
if (qm !== -1) {
this.search = rest.substr(qm);
this.query = rest.substr(qm + 1);
if (parseQueryString) {
this.query = querystring.parse(this.query);
}
rest = rest.slice(0, qm);
} else if (parseQueryString) {
// no query string, but parseQueryString still requested
this.search = '';
this.query = {};
}
if (rest) this.pathname = rest;
if (slashedProtocol[lowerProto] &&
this.hostname && !this.pathname) {
this.pathname = '/';
}
//to support http.request
if (this.pathname || this.search) {
var p = this.pathname || '';
var s = this.search || '';
this.path = p + s;
}
// finally, reconstruct the href based on what has been validated.
this.href = this.format();
return this;
};
// format a parsed object into a url string
function urlFormat(obj) {
// ensure it's an object, and not a string url.
// If it's an obj, this is a no-op.
// this way, you can call url_format() on strings
// to clean up potentially wonky urls.
if (util.isString(obj)) obj = urlParse(obj);
if (!(obj instanceof Url)) return Url.prototype.format.call(obj);
return obj.format();
}
Url.prototype.format = function() {
var auth = this.auth || '';
if (auth) {
auth = encodeURIComponent(auth);
auth = auth.replace(/%3A/i, ':');
auth += '@';
}
var protocol = this.protocol || '',
pathname = this.pathname || '',
hash = this.hash || '',
host = false,
query = '';
if (this.host) {
host = auth + this.host;
} else if (this.hostname) {
host = auth + (this.hostname.indexOf(':') === -1 ?
this.hostname :
'[' + this.hostname + ']');
if (this.port) {
host += ':' + this.port;
}
}
if (this.query &&
util.isObject(this.query) &&
Object.keys(this.query).length) {
query = querystring.stringify(this.query);
}
var search = this.search || (query && ('?' + query)) || '';
if (protocol && protocol.substr(-1) !== ':') protocol += ':';
// only the slashedProtocols get the //. Not mailto:, xmpp:, etc.
// unless they had them to begin with.
if (this.slashes ||
(!protocol || slashedProtocol[protocol]) && host !== false) {
host = '//' + (host || '');
if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;
} else if (!host) {
host = '';
}
if (hash && hash.charAt(0) !== '#') hash = '#' + hash;
if (search && search.charAt(0) !== '?') search = '?' + search;
pathname = pathname.replace(/[?#]/g, function(match) {
return encodeURIComponent(match);
});
search = search.replace('#', '%23');
return protocol + host + pathname + search + hash;
};
function urlResolve(source, relative) {
return urlParse(source, false, true).resolve(relative);
}
Url.prototype.resolve = function(relative) {
return this.resolveObject(urlParse(relative, false, true)).format();
};
function urlResolveObject(source, relative) {
if (!source) return relative;
return urlParse(source, false, true).resolveObject(relative);
}
Url.prototype.resolveObject = function(relative) {
if (util.isString(relative)) {
var rel = new Url();
rel.parse(relative, false, true);
relative = rel;
}
var result = new Url();
var tkeys = Object.keys(this);
for (var tk = 0; tk < tkeys.length; tk++) {
var tkey = tkeys[tk];
result[tkey] = this[tkey];
}
// hash is always overridden, no matter what.
// even href="" will remove it.
result.hash = relative.hash;
// if the relative url is empty, then there's nothing left to do here.
if (relative.href === '') {
result.href = result.format();
return result;
}
// hrefs like //foo/bar always cut to the protocol.
if (relative.slashes && !relative.protocol) {
// take everything except the protocol from relative
var rkeys = Object.keys(relative);
for (var rk = 0; rk < rkeys.length; rk++) {
var rkey = rkeys[rk];
if (rkey !== 'protocol')
result[rkey] = relative[rkey];
}
//urlParse appends trailing / to urls like http://www.example.com
if (slashedProtocol[result.protocol] &&
result.hostname && !result.pathname) {
result.path = result.pathname = '/';
}
result.href = result.format();
return result;
}
if (relative.protocol && relative.protocol !== result.protocol) {
// if it's a known url protocol, then changing
// the protocol does weird things
// first, if it's not file:, then we MUST have a host,
// and if there was a path
// to begin with, then we MUST have a path.
// if it is file:, then the host is dropped,
// because that's known to be hostless.
// anything else is assumed to be absolute.
if (!slashedProtocol[relative.protocol]) {
var keys = Object.keys(relative);
for (var v = 0; v < keys.length; v++) {
var k = keys[v];
result[k] = relative[k];
}
result.href = result.format();
return result;
}
result.protocol = relative.protocol;
if (!relative.host && !hostlessProtocol[relative.protocol]) {
var relPath = (relative.pathname || '').split('/');
while (relPath.length && !(relative.host = relPath.shift()));
if (!relative.host) relative.host = '';
if (!relative.hostname) relative.hostname = '';
if (relPath[0] !== '') relPath.unshift('');
if (relPath.length < 2) relPath.unshift('');
result.pathname = relPath.join('/');
} else {
result.pathname = relative.pathname;
}
result.search = relative.search;
result.query = relative.query;
result.host = relative.host || '';
result.auth = relative.auth;
result.hostname = relative.hostname || relative.host;
result.port = relative.port;
// to support http.request
if (result.pathname || result.search) {
var p = result.pathname || '';
var s = result.search || '';
result.path = p + s;
}
result.slashes = result.slashes || relative.slashes;
result.href = result.format();
return result;
}
var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'),
isRelAbs = (
relative.host ||
relative.pathname && relative.pathname.charAt(0) === '/'
),
mustEndAbs = (isRelAbs || isSourceAbs ||
(result.host && relative.pathname)),
removeAllDots = mustEndAbs,
srcPath = result.pathname && result.pathname.split('/') || [],
relPath = relative.pathname && relative.pathname.split('/') || [],
psychotic = result.protocol && !slashedProtocol[result.protocol];
// if the url is a non-slashed url, then relative
// links like ../.. should be able
// to crawl up to the hostname, as well. This is strange.
// result.protocol has already been set by now.
// Later on, put the first path part into the host field.
if (psychotic) {
result.hostname = '';
result.port = null;
if (result.host) {
if (srcPath[0] === '') srcPath[0] = result.host;
else srcPath.unshift(result.host);
}
result.host = '';
if (relative.protocol) {
relative.hostname = null;
relative.port = null;
if (relative.host) {
if (relPath[0] === '') relPath[0] = relative.host;
else relPath.unshift(relative.host);
}
relative.host = null;
}
mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');
}
if (isRelAbs) {
// it's absolute.
result.host = (relative.host || relative.host === '') ?
relative.host : result.host;
result.hostname = (relative.hostname || relative.hostname === '') ?
relative.hostname : result.hostname;
result.search = relative.search;
result.query = relative.query;
srcPath = relPath;
// fall through to the dot-handling below.
} else if (relPath.length) {
// it's relative
// throw away the existing file, and take the new path instead.
if (!srcPath) srcPath = [];
srcPath.pop();
srcPath = srcPath.concat(relPath);
result.search = relative.search;
result.query = relative.query;
} else if (!util.isNullOrUndefined(relative.search)) {
// just pull out the search.
// like href='?foo'.
// Put this after the other two cases because it simplifies the booleans
if (psychotic) {
result.hostname = result.host = srcPath.shift();
//occationaly the auth can get stuck only in host
//this especially happens in cases like
//url.resolveObject('mailto:local1@domain1', 'local2@domain2')
var authInHost = result.host && result.host.indexOf('@') > 0 ?
result.host.split('@') : false;
if (authInHost) {
result.auth = authInHost.shift();
result.host = result.hostname = authInHost.shift();
}
}
result.search = relative.search;
result.query = relative.query;
//to support http.request
if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
result.path = (result.pathname ? result.pathname : '') +
(result.search ? result.search : '');
}
result.href = result.format();
return result;
}
if (!srcPath.length) {
// no path at all. easy.
// we've already handled the other stuff above.
result.pathname = null;
//to support http.request
if (result.search) {
result.path = '/' + result.search;
} else {
result.path = null;
}
result.href = result.format();
return result;
}
// if a url ENDs in . or .., then it must get a trailing slash.
// however, if it ends in anything else non-slashy,
// then it must NOT get a trailing slash.
var last = srcPath.slice(-1)[0];
var hasTrailingSlash = (
(result.host || relative.host || srcPath.length > 1) &&
(last === '.' || last === '..') || last === '');
// strip single dots, resolve double dots to parent dir
// if the path tries to go above the root, `up` ends up > 0
var up = 0;
for (var i = srcPath.length; i >= 0; i--) {
last = srcPath[i];
if (last === '.') {
srcPath.splice(i, 1);
} else if (last === '..') {
srcPath.splice(i, 1);
up++;
} else if (up) {
srcPath.splice(i, 1);
up--;
}
}
// if the path is allowed to go above the root, restore leading ..s
if (!mustEndAbs && !removeAllDots) {
for (; up--; up) {
srcPath.unshift('..');
}
}
if (mustEndAbs && srcPath[0] !== '' &&
(!srcPath[0] || srcPath[0].charAt(0) !== '/')) {
srcPath.unshift('');
}
if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) {
srcPath.push('');
}
var isAbsolute = srcPath[0] === '' ||
(srcPath[0] && srcPath[0].charAt(0) === '/');
// put the host back
if (psychotic) {
result.hostname = result.host = isAbsolute ? '' :
srcPath.length ? srcPath.shift() : '';
//occationaly the auth can get stuck only in host
//this especially happens in cases like
//url.resolveObject('mailto:local1@domain1', 'local2@domain2')
var authInHost = result.host && result.host.indexOf('@') > 0 ?
result.host.split('@') : false;
if (authInHost) {
result.auth = authInHost.shift();
result.host = result.hostname = authInHost.shift();
}
}
mustEndAbs = mustEndAbs || (result.host && srcPath.length);
if (mustEndAbs && !isAbsolute) {
srcPath.unshift('');
}
if (!srcPath.length) {
result.pathname = null;
result.path = null;
} else {
result.pathname = srcPath.join('/');
}
//to support request.http
if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
result.path = (result.pathname ? result.pathname : '') +
(result.search ? result.search : '');
}
result.auth = relative.auth || result.auth;
result.slashes = result.slashes || relative.slashes;
result.href = result.format();
return result;
};
Url.prototype.parseHost = function() {
var host = this.host;
var port = portPattern.exec(host);
if (port) {
port = port[0];
if (port !== ':') {
this.port = port.substr(1);
}
host = host.substr(0, host.length - port.length);
}
if (host) this.hostname = host;
};
},{"./util":50,"punycode":31,"querystring":34}],50:[function(require,module,exports){
'use strict';
module.exports = {
isString: function(arg) {
return typeof(arg) === 'string';
},
isObject: function(arg) {
return typeof(arg) === 'object' && arg !== null;
},
isNull: function(arg) {
return arg === null;
},
isNullOrUndefined: function(arg) {
return arg == null;
}
};
},{}],51:[function(require,module,exports){
(function (global){
/**
* Module exports.
*/
module.exports = deprecate;
/**
* Mark that a method should not be used.
* Returns a modified function which warns once by default.
*
* If `localStorage.noDeprecation = true` is set, then it is a no-op.
*
* If `localStorage.throwDeprecation = true` is set, then deprecated functions
* will throw an Error when invoked.
*
* If `localStorage.traceDeprecation = true` is set, then deprecated functions
* will invoke `console.trace()` instead of `console.error()`.
*
* @param {Function} fn - the function to deprecate
* @param {String} msg - the string to print to the console when `fn` is invoked
* @returns {Function} a new "deprecated" version of `fn`
* @api public
*/
function deprecate (fn, msg) {
if (config('noDeprecation')) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (config('throwDeprecation')) {
throw new Error(msg);
} else if (config('traceDeprecation')) {
console.trace(msg);
} else {
console.warn(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
}
/**
* Checks `localStorage` for boolean values for the given `name`.
*
* @param {String} name
* @returns {Boolean}
* @api private
*/
function config (name) {
// accessing global.localStorage can trigger a DOMException in sandboxed iframes
try {
if (!global.localStorage) return false;
} catch (_) {
return false;
}
var val = global.localStorage[name];
if (null == val) return false;
return String(val).toLowerCase() === 'true';
}
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],52:[function(require,module,exports){
arguments[4][18][0].apply(exports,arguments)
},{"dup":18}],53:[function(require,module,exports){
module.exports = function isBuffer(arg) {
return arg && typeof arg === 'object'
&& typeof arg.copy === 'function'
&& typeof arg.fill === 'function'
&& typeof arg.readUInt8 === 'function';
}
},{}],54:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
if (!isString(f)) {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var len = args.length;
var str = String(f).replace(formatRegExp, function(x) {
if (x === '%%') return '%';
if (i >= len) return x;
switch (x) {
case '%s': return String(args[i++]);
case '%d': return Number(args[i++]);
case '%j':
try {
return JSON.stringify(args[i++]);
} catch (_) {
return '[Circular]';
}
default:
return x;
}
});
for (var x = args[i]; i < len; x = args[++i]) {
if (isNull(x) || !isObject(x)) {
str += ' ' + x;
} else {
str += ' ' + inspect(x);
}
}
return str;
};
// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
// Allow for deprecating things in the process of starting up.
if (isUndefined(global.process)) {
return function() {
return exports.deprecate(fn, msg).apply(this, arguments);
};
}
if (process.noDeprecation === true) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (process.throwDeprecation) {
throw new Error(msg);
} else if (process.traceDeprecation) {
console.trace(msg);
} else {
console.error(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
};
var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
if (isUndefined(debugEnviron))
debugEnviron = process.env.NODE_DEBUG || '';
set = set.toUpperCase();
if (!debugs[set]) {
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
var pid = process.pid;
debugs[set] = function() {
var msg = exports.format.apply(exports, arguments);
console.error('%s %d: %s', set, pid, msg);
};
} else {
debugs[set] = function() {};
}
}
return debugs[set];
};
/**
* Echos the value of a value. Trys to print the value out
* in the best way possible given the different types.
*
* @param {Object} obj The object to print out.
* @param {Object} opts Optional options object that alters the output.
*/
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
// default options
var ctx = {
seen: [],
stylize: stylizeNoColor
};
// legacy...
if (arguments.length >= 3) ctx.depth = arguments[2];
if (arguments.length >= 4) ctx.colors = arguments[3];
if (isBoolean(opts)) {
// legacy...
ctx.showHidden = opts;
} else if (opts) {
// got an "options" object
exports._extend(ctx, opts);
}
// set default options
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
if (isUndefined(ctx.depth)) ctx.depth = 2;
if (isUndefined(ctx.colors)) ctx.colors = false;
if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
if (ctx.colors) ctx.stylize = stylizeWithColor;
return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
'bold' : [1, 22],
'italic' : [3, 23],
'underline' : [4, 24],
'inverse' : [7, 27],
'white' : [37, 39],
'grey' : [90, 39],
'black' : [30, 39],
'blue' : [34, 39],
'cyan' : [36, 39],
'green' : [32, 39],
'magenta' : [35, 39],
'red' : [31, 39],
'yellow' : [33, 39]
};
// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
'special': 'cyan',
'number': 'yellow',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'date': 'magenta',
// "name": intentionally not styling
'regexp': 'red'
};
function stylizeWithColor(str, styleType) {
var style = inspect.styles[styleType];
if (style) {
return '\u001b[' + inspect.colors[style][0] + 'm' + str +
'\u001b[' + inspect.colors[style][1] + 'm';
} else {
return str;
}
}
function stylizeNoColor(str, styleType) {
return str;
}
function arrayToHash(array) {
var hash = {};
array.forEach(function(val, idx) {
hash[val] = true;
});
return hash;
}
function formatValue(ctx, value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (ctx.customInspect &&
value &&
isFunction(value.inspect) &&
// Filter out the util module, it's inspect function is special
value.inspect !== exports.inspect &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
var ret = value.inspect(recurseTimes, ctx);
if (!isString(ret)) {
ret = formatValue(ctx, ret, recurseTimes);
}
return ret;
}
// Primitive types cannot have properties
var primitive = formatPrimitive(ctx, value);
if (primitive) {
return primitive;
}
// Look up the keys of the object.
var keys = Object.keys(value);
var visibleKeys = arrayToHash(keys);
if (ctx.showHidden) {
keys = Object.getOwnPropertyNames(value);
}
// IE doesn't make error fields non-enumerable
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
if (isError(value)
&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
return formatError(value);
}
// Some type of object without properties can be shortcutted.
if (keys.length === 0) {
if (isFunction(value)) {
var name = value.name ? ': ' + value.name : '';
return ctx.stylize('[Function' + name + ']', 'special');
}
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
}
if (isDate(value)) {
return ctx.stylize(Date.prototype.toString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
}
var base = '', array = false, braces = ['{', '}'];
// Make Array say that they are Array
if (isArray(value)) {
array = true;
braces = ['[', ']'];
}
// Make functions say that they are functions
if (isFunction(value)) {
var n = value.name ? ': ' + value.name : '';
base = ' [Function' + n + ']';
}
// Make RegExps say that they are RegExps
if (isRegExp(value)) {
base = ' ' + RegExp.prototype.toString.call(value);
}
// Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + Date.prototype.toUTCString.call(value);
}
// Make error with message first say the error
if (isError(value)) {
base = ' ' + formatError(value);
}
if (keys.length === 0 && (!array || value.length == 0)) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
} else {
return ctx.stylize('[Object]', 'special');
}
}
ctx.seen.push(value);
var output;
if (array) {
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
} else {
output = keys.map(function(key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
});
}
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatPrimitive(ctx, value) {
if (isUndefined(value))
return ctx.stylize('undefined', 'undefined');
if (isString(value)) {
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
}
if (isNumber(value))
return ctx.stylize('' + value, 'number');
if (isBoolean(value))
return ctx.stylize('' + value, 'boolean');
// For some reason typeof null is "object", so special case here.
if (isNull(value))
return ctx.stylize('null', 'null');
}
function formatError(value) {
return '[' + Error.prototype.toString.call(value) + ']';
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (hasOwnProperty(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
String(i), true));
} else {
output.push('');
}
}
keys.forEach(function(key) {
if (!key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, true));
}
});
return output;
}
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
var name, str, desc;
desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
if (desc.get) {
if (desc.set) {
str = ctx.stylize('[Getter/Setter]', 'special');
} else {
str = ctx.stylize('[Getter]', 'special');
}
} else {
if (desc.set) {
str = ctx.stylize('[Setter]', 'special');
}
}
if (!hasOwnProperty(visibleKeys, key)) {
name = '[' + key + ']';
}
if (!str) {
if (ctx.seen.indexOf(desc.value) < 0) {
if (isNull(recurseTimes)) {
str = formatValue(ctx, desc.value, null);
} else {
str = formatValue(ctx, desc.value, recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (isUndefined(name)) {
if (array && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = ctx.stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'")
.replace(/\\"/g, '"')
.replace(/(^"|"$)/g, "'");
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var numLinesEst = 0;
var length = output.reduce(function(prev, cur) {
numLinesEst++;
if (cur.indexOf('\n') >= 0) numLinesEst++;
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
}, 0);
if (length > 60) {
return braces[0] +
(base === '' ? '' : base + '\n ') +
' ' +
output.join(',\n ') +
' ' +
braces[1];
}
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
return Array.isArray(ar);
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return isObject(e) &&
(objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = require('./support/isBuffer');
function objectToString(o) {
return Object.prototype.toString.call(o);
}
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
'Oct', 'Nov', 'Dec'];
// 26 Feb 16:19:34
function timestamp() {
var d = new Date();
var time = [pad(d.getHours()),
pad(d.getMinutes()),
pad(d.getSeconds())].join(':');
return [d.getDate(), months[d.getMonth()], time].join(' ');
}
// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};
/**
* Inherit the prototype methods from one constructor into another.
*
* The Function.prototype.inherits from lang.js rewritten as a standalone
* function (not on Function.prototype). NOTE: If this file is to be loaded
* during bootstrapping this function needs to be rewritten using some native
* functions as prototype setup using normal JavaScript does not work as
* expected during bootstrapping (see mirror.js in r114903).
*
* @param {function} ctor Constructor function which needs to inherit the
* prototype.
* @param {function} superCtor Constructor function to inherit prototype from.
*/
exports.inherits = require('inherits');
exports._extend = function(origin, add) {
// Don't do anything if add isn't an object
if (!add || !isObject(add)) return origin;
var keys = Object.keys(add);
var i = keys.length;
while (i--) {
origin[keys[i]] = add[keys[i]];
}
return origin;
};
function hasOwnProperty(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":53,"_process":30,"inherits":52}],55:[function(require,module,exports){
(function (process,global){
'use strict'
var Transform = require('readable-stream').Transform
var duplexify = require('duplexify')
var WS = require('ws')
var Buffer = require('safe-buffer').Buffer
module.exports = WebSocketStream
function buildProxy (options, socketWrite, socketEnd) {
var proxy = new Transform({
objectMode: options.objectMode
})
proxy._write = socketWrite
proxy._flush = socketEnd
proxy._destroy = function(err, cb) {
var self = this
this.push(null)
this.end()
process.nextTick(function() {
cb(err);
self.emit('close')
})
}
return proxy
}
function WebSocketStream(target, protocols, options) {
var stream, socket
var isBrowser = process.title === 'browser'
var isNative = !!global.WebSocket
var socketWrite = isBrowser ? socketWriteBrowser : socketWriteNode
if (protocols && !Array.isArray(protocols) && 'object' === typeof protocols) {
// accept the "options" Object as the 2nd argument
options = protocols
protocols = null
if (typeof options.protocol === 'string' || Array.isArray(options.protocol)) {
protocols = options.protocol;
}
}
if (!options) options = {}
if (options.objectMode === undefined) {
options.objectMode = !(options.binary === true || options.binary === undefined)
}
var proxy = buildProxy(options, socketWrite, socketEnd)
if (!options.objectMode) {
proxy._writev = writev
}
// browser only: sets the maximum socket buffer size before throttling
var bufferSize = options.browserBufferSize || 1024 * 512
// browser only: how long to wait when throttling
var bufferTimeout = options.browserBufferTimeout || 1000
// use existing WebSocket object that was passed in
if (typeof target === 'object') {
socket = target
// otherwise make a new one
} else {
// special constructor treatment for native websockets in browsers, see
// https://github.com/maxogden/websocket-stream/issues/82
if (isNative && isBrowser) {
socket = new WS(target, protocols)
} else {
socket = new WS(target, protocols, options)
}
socket.binaryType = 'arraybuffer'
}
// was already open when passed in
if (socket.readyState === socket.OPEN) {
stream = proxy
} else {
stream = duplexify.obj()
socket.onopen = onopen
}
stream.socket = socket
socket.onclose = onclose
socket.onerror = onerror
socket.onmessage = onmessage
proxy.on('close', destroy)
var coerceToBuffer = !options.objectMode
function socketWriteNode(chunk, enc, next) {
// avoid errors, this never happens unless
// destroy() is called
if (socket.readyState !== socket.OPEN) {
next()
return
}
if (coerceToBuffer && typeof chunk === 'string') {
chunk = new Buffer(chunk, 'utf8')
}
socket.send(chunk, next)
}
function socketWriteBrowser(chunk, enc, next) {
if (socket.bufferedAmount > bufferSize) {
setTimeout(socketWriteBrowser, bufferTimeout, chunk, enc, next)
return
}
if (coerceToBuffer && typeof chunk === 'string') {
chunk = new Buffer(chunk, 'utf8')
}
try {
socket.send(chunk)
} catch(err) {
return next(err)
}
next()
}
function socketEnd(done) {
socket.close()
done()
}
function onopen() {
stream.setReadable(proxy)
stream.setWritable(proxy)
stream.emit('connect')
}
function onclose() {
stream.end()
stream.destroy()
}
function onerror(err) {
stream.destroy(err)
}
function onmessage(event) {
var data = event.data
if (data instanceof ArrayBuffer) data = Buffer.from(data)
else data = Buffer.from(data, 'utf8')
proxy.push(data)
}
function destroy() {
socket.close()
}
// this is to be enabled only if objectMode is false
function writev (chunks, cb) {
var buffers = new Array(chunks.length)
for (var i = 0; i < chunks.length; i++) {
if (typeof chunks[i].chunk === 'string') {
buffers[i] = Buffer.from(chunks[i], 'utf8')
} else {
buffers[i] = chunks[i].chunk
}
}
this._write(Buffer.concat(buffers), 'binary', cb)
}
return stream
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":30,"duplexify":14,"readable-stream":44,"safe-buffer":46,"ws":56}],56:[function(require,module,exports){
var ws = null
if (typeof WebSocket !== 'undefined') {
ws = WebSocket
} else if (typeof MozWebSocket !== 'undefined') {
ws = MozWebSocket
} else if (typeof window !== 'undefined') {
ws = window.WebSocket || window.MozWebSocket
}
module.exports = ws
},{}],57:[function(require,module,exports){
// Returns a wrapper function that returns a wrapped callback
// The wrapper function should do some stuff, and return a
// presumably different callback function.
// This makes sure that own properties are retained, so that
// decorations and such are not lost along the way.
module.exports = wrappy
function wrappy (fn, cb) {
if (fn && cb) return wrappy(fn)(cb)
if (typeof fn !== 'function')
throw new TypeError('need wrapper function')
Object.keys(fn).forEach(function (k) {
wrapper[k] = fn[k]
})
return wrapper
function wrapper() {
var args = new Array(arguments.length)
for (var i = 0; i < args.length; i++) {
args[i] = arguments[i]
}
var ret = fn.apply(this, args)
var cb = args[args.length-1]
if (typeof ret === 'function' && ret !== cb) {
Object.keys(cb).forEach(function (k) {
ret[k] = cb[k]
})
}
return ret
}
}
},{}],58:[function(require,module,exports){
module.exports = extend
var hasOwnProperty = Object.prototype.hasOwnProperty;
function extend() {
var target = {}
for (var i = 0; i < arguments.length; i++) {
var source = arguments[i]
for (var key in source) {
if (hasOwnProperty.call(source, key)) {
target[key] = source[key]
}
}
}
return target
}
},{}]},{},[8])(8)
}); © 2015 - 2025 Weber Informatics LLC | Privacy Policy