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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(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
(function (process,global){
'use strict'
/**
* Module dependencies
*/
var EventEmitter = require('events').EventEmitter
var Store = require('./store')
var mqttPacket = require('mqtt-packet')
var Writable = require('readable-stream').Writable
var inherits = require('inherits')
var reInterval = require('reinterval')
var validations = require('./validations')
var xtend = require('xtend')
var debug = require('debug')('mqttjs:client')
var nextTick = process ? process.nextTick : function (callback) { setTimeout(callback, 0) }
var setImmediate = global.setImmediate || function (callback) {
// works in node v0.8
nextTick(callback)
}
var defaultConnectOptions = {
keepalive: 60,
reschedulePings: true,
protocolId: 'MQTT',
protocolVersion: 4,
reconnectPeriod: 1000,
connectTimeout: 30 * 1000,
clean: true,
resubscribe: true
}
var socketErrors = [
'ECONNREFUSED',
'EADDRINUSE',
'ECONNRESET',
'ENOTFOUND'
]
// Other Socket Errors: EADDRINUSE, ECONNRESET, ENOTFOUND.
var errors = {
0: '',
1: 'Unacceptable protocol version',
2: 'Identifier rejected',
3: 'Server unavailable',
4: 'Bad username or password',
5: 'Not authorized',
16: 'No matching subscribers',
17: 'No subscription existed',
128: 'Unspecified error',
129: 'Malformed Packet',
130: 'Protocol Error',
131: 'Implementation specific error',
132: 'Unsupported Protocol Version',
133: 'Client Identifier not valid',
134: 'Bad User Name or Password',
135: 'Not authorized',
136: 'Server unavailable',
137: 'Server busy',
138: 'Banned',
139: 'Server shutting down',
140: 'Bad authentication method',
141: 'Keep Alive timeout',
142: 'Session taken over',
143: 'Topic Filter invalid',
144: 'Topic Name invalid',
145: 'Packet identifier in use',
146: 'Packet Identifier not found',
147: 'Receive Maximum exceeded',
148: 'Topic Alias invalid',
149: 'Packet too large',
150: 'Message rate too high',
151: 'Quota exceeded',
152: 'Administrative action',
153: 'Payload format invalid',
154: 'Retain not supported',
155: 'QoS not supported',
156: 'Use another server',
157: 'Server moved',
158: 'Shared Subscriptions not supported',
159: 'Connection rate exceeded',
160: 'Maximum connect time',
161: 'Subscription Identifiers not supported',
162: 'Wildcard Subscriptions not supported'
}
function defaultId () {
return 'mqttjs_' + Math.random().toString(16).substr(2, 8)
}
function sendPacket (client, packet, cb) {
debug('sendPacket :: packet: %O', packet)
debug('sendPacket :: emitting `packetsend`')
client.emit('packetsend', packet)
debug('sendPacket :: writing to stream')
var result = mqttPacket.writeToStream(packet, client.stream, client.options)
debug('sendPacket :: writeToStream result %s', result)
if (!result && cb) {
debug('sendPacket :: handle events on `drain` once through callback.')
client.stream.once('drain', cb)
} else if (cb) {
debug('sendPacket :: invoking cb')
cb()
}
}
function flush (queue) {
if (queue) {
debug('flush: queue exists? %b', !!(queue))
Object.keys(queue).forEach(function (messageId) {
if (typeof queue[messageId].cb === 'function') {
queue[messageId].cb(new Error('Connection closed'))
delete queue[messageId]
}
})
}
}
function flushVolatile (queue) {
if (queue) {
debug('flushVolatile :: deleting volatile messages from the queue and setting their callbacks as error function')
Object.keys(queue).forEach(function (messageId) {
if (queue[messageId].volatile && typeof queue[messageId].cb === 'function') {
queue[messageId].cb(new Error('Connection closed'))
delete queue[messageId]
}
})
}
}
function storeAndSend (client, packet, cb, cbStorePut) {
debug('storeAndSend :: store packet with cmd %s to outgoingStore', packet.cmd)
client.outgoingStore.put(packet, function storedPacket (err) {
if (err) {
return cb && cb(err)
}
cbStorePut()
sendPacket(client, packet, cb)
})
}
function nop (error) {
debug('nop ::', error)
}
/**
* MqttClient constructor
*
* @param {Stream} stream - stream
* @param {Object} [options] - connection options
* (see Connection#connect)
*/
function MqttClient (streamBuilder, options) {
var k
var that = this
if (!(this instanceof MqttClient)) {
return new MqttClient(streamBuilder, options)
}
this.options = options || {}
// Defaults
for (k in defaultConnectOptions) {
if (typeof this.options[k] === 'undefined') {
this.options[k] = defaultConnectOptions[k]
} else {
this.options[k] = options[k]
}
}
debug('MqttClient :: options.protocol', options.protocol)
debug('MqttClient :: options.protocolVersion', options.protocolVersion)
debug('MqttClient :: options.username', options.username)
debug('MqttClient :: options.keepalive', options.keepalive)
debug('MqttClient :: options.reconnectPeriod', options.reconnectPeriod)
debug('MqttClient :: options.rejectUnauthorized', options.rejectUnauthorized)
this.options.clientId = (typeof options.clientId === 'string') ? options.clientId : defaultId()
debug('MqttClient :: clientId', this.options.clientId)
this.options.customHandleAcks = (options.protocolVersion === 5 && options.customHandleAcks) ? options.customHandleAcks : function () { arguments[3](0) }
this.streamBuilder = streamBuilder
// Inflight message storages
this.outgoingStore = options.outgoingStore || new Store()
this.incomingStore = options.incomingStore || new Store()
// Should QoS zero messages be queued when the connection is broken?
this.queueQoSZero = options.queueQoSZero === undefined ? true : options.queueQoSZero
// map of subscribed topics to support reconnection
this._resubscribeTopics = {}
// map of a subscribe messageId and a topic
this.messageIdToTopic = {}
// Ping timer, setup in _setupPingTimer
this.pingTimer = null
// Is the client connected?
this.connected = false
// Are we disconnecting?
this.disconnecting = false
// Packet queue
this.queue = []
// connack timer
this.connackTimer = null
// Reconnect timer
this.reconnectTimer = null
// Is processing store?
this._storeProcessing = false
// Packet Ids are put into the store during store processing
this._packetIdsDuringStoreProcessing = {}
/**
* MessageIDs starting with 1
* ensure that nextId is min. 1, see https://github.com/mqttjs/MQTT.js/issues/810
*/
this.nextId = Math.max(1, Math.floor(Math.random() * 65535))
// Inflight callbacks
this.outgoing = {}
// True if connection is first time.
this._firstConnection = true
// Send queued packets
this.on('connect', function () {
var queue = this.queue
function deliver () {
var entry = queue.shift()
debug('deliver :: entry %o', entry)
var packet = null
if (!entry) {
return
}
packet = entry.packet
debug('deliver :: call _sendPacket for %o', packet)
that._sendPacket(
packet,
function (err) {
if (entry.cb) {
entry.cb(err)
}
deliver()
}
)
}
debug('connect :: sending queued packets')
deliver()
})
this.on('close', function () {
debug('close :: connected set to `false`')
this.connected = false
debug('close :: clearing connackTimer')
clearTimeout(this.connackTimer)
debug('close :: clearing ping timer')
if (that.pingTimer !== null) {
that.pingTimer.clear()
that.pingTimer = null
}
debug('close :: calling _setupReconnect')
this._setupReconnect()
})
EventEmitter.call(this)
debug('MqttClient :: setting up stream')
this._setupStream()
}
inherits(MqttClient, 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 = []
debug('_setupStream :: calling method to clear reconnect')
this._clearReconnect()
debug('_setupStream :: using streamBuilder provided to client to create stream')
this.stream = this.streamBuilder(this)
parser.on('packet', function (packet) {
debug('parser :: on packet push to packets array.')
packets.push(packet)
})
function nextTickWork () {
if (packets.length) {
nextTick(work)
} else {
var done = completeParse
completeParse = null
done()
}
}
function work () {
debug('work :: getting next packet in queue')
var packet = packets.shift()
if (packet) {
debug('work :: packet pulled from queue')
that._handlePacket(packet, nextTickWork)
} else {
debug('work :: no packets in queue')
var done = completeParse
completeParse = null
debug('work :: done flag is %s', !!(done))
if (done) done()
}
}
writable._write = function (buf, enc, done) {
completeParse = done
debug('writable stream :: parsing buffer')
parser.parse(buf)
work()
}
function streamErrorHandler (error) {
debug('streamErrorHandler :: error', error.message)
if (socketErrors.includes(error.code)) {
// handle error
debug('streamErrorHandler :: emitting error')
that.emit('error', error)
} else {
nop(error)
}
}
debug('_setupStream :: pipe stream to writable stream')
this.stream.pipe(writable)
// Suppress connection errors
this.stream.on('error', streamErrorHandler)
// Echo stream close
this.stream.on('close', function () {
debug('(%s)stream :: on close', that.options.clientId)
flushVolatile(that.outgoing)
debug('stream: emit close to MqttClient')
that.emit('close')
})
// Send a connect packet
debug('_setupStream: sending packet `connect`')
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'))
// auth
if (this.options.properties) {
if (!this.options.properties.authenticationMethod && this.options.properties.authenticationData) {
that.end(() =>
this.emit('error', new Error('Packet has no Authentication Method')
))
return this
}
if (this.options.properties.authenticationMethod && this.options.authPacket && typeof this.options.authPacket === 'object') {
var authPacket = xtend({cmd: 'auth', reasonCode: 0}, this.options.authPacket)
sendPacket(this, authPacket)
}
}
// 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 () {
debug('!!connectTimeout hit!! Calling _cleanUp with force `true`')
that._cleanUp(true)
}, this.options.connectTimeout)
}
MqttClient.prototype._handlePacket = function (packet, done) {
var options = this.options
if (options.protocolVersion === 5 && options.properties && options.properties.maximumPacketSize && options.properties.maximumPacketSize < packet.length) {
this.emit('error', new Error('exceeding packets size ' + packet.cmd))
this.end({reasonCode: 149, properties: { reasonString: 'Maximum packet size was exceeded' }})
return this
}
debug('_handlePacket :: emitting packetreceive')
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
case 'disconnect':
this._handleDisconnect(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 <message> to <topic>
*
* @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
* {Function} cbStorePut - function(){} called when message is put into `outgoingStore`
* @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) {
debug('publish :: message `%s` to topic `%s`', message, topic)
var packet
var options = this.options
// .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
}
if (options.protocolVersion === 5) {
packet.properties = opts.properties
if ((!options.properties && packet.properties && packet.properties.topicAlias) || ((opts.properties && options.properties) &&
((opts.properties.topicAlias && options.properties.topicAliasMaximum && opts.properties.topicAlias > options.properties.topicAliasMaximum) ||
(!options.properties.topicAliasMaximum && opts.properties.topicAlias)))) {
/*
if we are don`t setup topic alias or
topic alias maximum less than topic alias or
server don`t give topic alias maximum,
we are removing topic alias from packet
*/
delete packet.properties.topicAlias
}
}
debug('publish :: qos', opts.qos)
switch (opts.qos) {
case 1:
case 2:
// Add to callbacks
this.outgoing[packet.messageId] = {
volatile: false,
cb: callback || nop
}
if (this._storeProcessing) {
debug('_storeProcessing enabled')
this._packetIdsDuringStoreProcessing[packet.messageId] = false
this._storePacket(packet, undefined, opts.cbStorePut)
} else {
debug('MqttClient:publish: packet cmd: %s', packet.cmd)
this._sendPacket(packet, undefined, opts.cbStorePut)
}
break
default:
if (this._storeProcessing) {
debug('_storeProcessing enabled')
this._storePacket(packet, callback, opts.cbStorePut)
} else {
debug('MqttClient:publish: packet cmd: %s', packet.cmd)
this._sendPacket(packet, callback, opts.cbStorePut)
}
break
}
return this
}
/**
* subscribe - subscribe to <topic>
*
* @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': {qos: 0}, 'topic2': {qos: 1}}, console.log);
* @example client.subscribe('topic', console.log);
*/
MqttClient.prototype.subscribe = function () {
var packet
var args = new Array(arguments.length)
for (var i = 0; i < arguments.length; i++) {
args[i] = arguments[i]
}
var subs = []
var obj = args.shift()
var resubscribe = obj.resubscribe
var callback = args.pop() || nop
var opts = args.pop()
var invalidTopic
var that = this
var version = this.options.protocolVersion
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)) {
debug('subscribe: discconecting true')
return this
}
var defaultOpts = {
qos: 0
}
if (version === 5) {
defaultOpts.nl = false
defaultOpts.rap = false
defaultOpts.rh = 0
}
opts = xtend(defaultOpts, opts)
if (Array.isArray(obj)) {
obj.forEach(function (topic) {
debug('subscribe: array topic %s', topic)
if (!that._resubscribeTopics.hasOwnProperty(topic) ||
that._resubscribeTopics[topic].qos < opts.qos ||
resubscribe) {
var currentOpts = {
topic: topic,
qos: opts.qos
}
if (version === 5) {
currentOpts.nl = opts.nl
currentOpts.rap = opts.rap
currentOpts.rh = opts.rh
currentOpts.properties = opts.properties
}
debug('subscribe: pushing topic `%s` and qos `%s` to subs list', currentOpts.topic, currentOpts.qos)
subs.push(currentOpts)
}
})
} else {
Object
.keys(obj)
.forEach(function (k) {
debug('subscribe: object topic %s', k)
if (!that._resubscribeTopics.hasOwnProperty(k) ||
that._resubscribeTopics[k].qos < obj[k].qos ||
resubscribe) {
var currentOpts = {
topic: k,
qos: obj[k].qos
}
if (version === 5) {
currentOpts.nl = obj[k].nl
currentOpts.rap = obj[k].rap
currentOpts.rh = obj[k].rh
currentOpts.properties = opts.properties
}
debug('subscribe: pushing `%s` to subs list', currentOpts)
subs.push(currentOpts)
}
})
}
packet = {
cmd: 'subscribe',
subscriptions: subs,
qos: 1,
retain: false,
dup: false,
messageId: this._nextId()
}
if (opts.properties) {
packet.properties = opts.properties
}
if (!subs.length) {
callback(null, [])
return
}
// subscriptions to resubscribe to in case of disconnect
if (this.options.resubscribe) {
debug('subscribe :: resubscribe true')
var topics = []
subs.forEach(function (sub) {
if (that.options.reconnectPeriod > 0) {
var topic = { qos: sub.qos }
if (version === 5) {
topic.nl = sub.nl || false
topic.rap = sub.rap || false
topic.rh = sub.rh || 0
topic.properties = sub.properties
}
that._resubscribeTopics[sub.topic] = topic
topics.push(sub.topic)
}
})
that.messageIdToTopic[packet.messageId] = topics
}
this.outgoing[packet.messageId] = {
volatile: true,
cb: 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)
}
}
debug('subscribe :: call _sendPacket')
this._sendPacket(packet)
return this
}
/**
* unsubscribe - unsubscribe from topic(s)
*
* @param {String, Array} topic - topics to unsubscribe from
* @param {Object} [opts] - optional subscription options, includes:
* {Object} properties - properties of unsubscribe packet
* @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 () {
var packet = {
cmd: 'unsubscribe',
qos: 1,
messageId: this._nextId()
}
var that = this
var args = new Array(arguments.length)
for (var i = 0; i < arguments.length; i++) {
args[i] = arguments[i]
}
var topic = args.shift()
var callback = args.pop() || nop
var opts = args.pop()
if (typeof topic === 'string') {
topic = [topic]
}
if (typeof callback !== 'function') {
opts = callback
callback = nop
}
if (this._checkDisconnecting(callback)) {
return this
}
if (typeof topic === 'string') {
packet.unsubscriptions = [topic]
} else if (Array.isArray(topic)) {
packet.unsubscriptions = topic
}
if (this.options.resubscribe) {
packet.unsubscriptions.forEach(function (topic) {
delete that._resubscribeTopics[topic]
})
}
if (typeof opts === 'object' && opts.properties) {
packet.properties = opts.properties
}
this.outgoing[packet.messageId] = {
volatile: true,
cb: callback
}
debug('unsubscribe: call _sendPacket')
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 {Object} opts - added to the disconnect packet
* @param {Function} cb - called when the client has been closed
*
* @api public
*/
MqttClient.prototype.end = function (force, opts, cb) {
var that = this
debug('end :: (%s)', this.options.clientId)
if (force == null || typeof force !== 'boolean') {
cb = opts || nop
opts = force
force = false
if (typeof opts !== 'object') {
cb = opts
opts = null
if (typeof cb !== 'function') {
cb = nop
}
}
}
if (typeof opts !== 'object') {
cb = opts
opts = null
}
debug('end :: cb? %s', !!cb)
cb = cb || nop
function closeStores () {
debug('end :: closeStores: closing incoming and outgoing stores')
that.disconnected = true
that.incomingStore.close(function (e1) {
that.outgoingStore.close(function (e2) {
debug('end :: closeStores: emitting end')
that.emit('end')
if (cb) {
let err = e1 || e2
debug('end :: closeStores: invoking callback with args')
cb(err)
}
})
})
if (that._deferredReconnect) {
that._deferredReconnect()
}
}
function finish () {
// defer closesStores of an I/O cycle,
// just to make sure things are
// ok for websockets
debug('end :: (%s) :: finish :: calling _cleanUp with force %s', that.options.clientId, force)
that._cleanUp(force, () => {
debug('end :: finish :: calling process.nextTick on closeStores')
// var boundProcess = nextTick.bind(null, closeStores)
nextTick(closeStores.bind(that))
}, opts)
}
if (this.disconnecting) {
cb()
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
debug('end :: (%s) :: calling finish in 10ms once outgoing is empty', that.options.clientId)
this.once('outgoingEmpty', setTimeout.bind(null, finish, 10))
} else {
debug('end :: (%s) :: immediately calling finish', that.options.clientId)
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} messageId - messageId to remove message
* @returns {MqttClient} this - for chaining
* @api public
*
* @example client.removeOutgoingMessage(client.getLastMessageId());
*/
MqttClient.prototype.removeOutgoingMessage = function (messageId) {
var cb = this.outgoing[messageId] ? this.outgoing[messageId].cb : null
delete this.outgoing[messageId]
this.outgoingStore.del({messageId: messageId}, 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) {
debug('client reconnect')
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 () {
debug('_reconnect: emitting reconnect to client')
this.emit('reconnect')
if (this.connected) {
this.end(() => { this._setupStream() })
debug('client already connected. disconnecting first.')
} else {
debug('_reconnect: calling _setupStream')
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) {
debug('_setupReconnect :: emit `offline` state')
this.emit('offline')
debug('_setupReconnect :: set `reconnecting` to `true`')
this.reconnecting = true
}
debug('_setupReconnect :: setting reconnectTimer for %d ms', that.options.reconnectPeriod)
that.reconnectTimer = setInterval(function () {
debug('reconnectTimer :: reconnect triggered!')
that._reconnect()
}, that.options.reconnectPeriod)
} else {
debug('_setupReconnect :: doing nothing...')
}
}
/**
* _clearReconnect - clear the reconnect timer
*/
MqttClient.prototype._clearReconnect = function () {
debug('_clearReconnect : clearing reconnect timer')
if (this.reconnectTimer) {
clearInterval(this.reconnectTimer)
this.reconnectTimer = null
}
}
/**
* _cleanUp - clean up on connection end
* @api private
*/
MqttClient.prototype._cleanUp = function (forced, done) {
var opts = arguments[2]
if (done) {
debug('_cleanUp :: done callback provided for on stream close')
this.stream.on('close', done)
}
debug('_cleanUp :: forced? %s', forced)
if (forced) {
if ((this.options.reconnectPeriod === 0) && this.options.clean) {
flush(this.outgoing)
}
debug('_cleanUp :: (%s) :: destroying stream', this.options.clientId)
this.stream.destroy()
} else {
var packet = xtend({ cmd: 'disconnect' }, opts)
debug('_cleanUp :: (%s) :: call _sendPacket with disconnect packet', this.options.clientId)
this._sendPacket(
packet,
setImmediate.bind(
null,
this.stream.end.bind(this.stream)
)
)
}
if (!this.disconnecting) {
debug('_cleanUp :: client not disconnecting. Clearing and resetting reconnect.')
this._clearReconnect()
this._setupReconnect()
}
if (this.pingTimer !== null) {
debug('_cleanUp :: clearing pingTimer')
this.pingTimer.clear()
this.pingTimer = null
}
if (done && !this.connected) {
debug('_cleanUp :: (%s) :: removing stream `done` callback `close` listener', this.options.clientId)
this.stream.removeListener('close', done)
done()
}
}
/**
* _sendPacket - send or queue a packet
* @param {Object} packet - packet options
* @param {Function} cb - callback when the packet is sent
* @param {Function} cbStorePut - called when message is put into outgoingStore
* @api private
*/
MqttClient.prototype._sendPacket = function (packet, cb, cbStorePut) {
debug('_sendPacket :: (%s) :: start', this.options.clientId)
cbStorePut = cbStorePut || nop
if (!this.connected) {
debug('_sendPacket :: client not connected. Storing packet offline.')
this._storePacket(packet, cb, cbStorePut)
return
}
// When sending a packet, reschedule the ping timer
this._shiftPingInterval()
switch (packet.cmd) {
case 'publish':
break
case 'pubrel':
storeAndSend(this, packet, cb, cbStorePut)
return
default:
sendPacket(this, packet, cb)
return
}
switch (packet.qos) {
case 2:
case 1:
storeAndSend(this, packet, cb, cbStorePut)
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
}
debug('_sendPacket :: (%s) :: end', this.options.clientId)
}
/**
* _storePacket - queue a packet
* @param {Object} packet - packet options
* @param {Function} cb - callback when the packet is sent
* @param {Function} cbStorePut - called when message is put into outgoingStore
* @api private
*/
MqttClient.prototype._storePacket = function (packet, cb, cbStorePut) {
debug('_storePacket :: packet: %o', packet)
debug('_storePacket :: cb? %s', !!cb)
cbStorePut = cbStorePut || nop
// check that the packet is not a qos of 0, or that the command is not a publish
if (((packet.qos || 0) === 0 && this.queueQoSZero) || packet.cmd !== 'publish') {
this.queue.push({ packet: packet, cb: cb })
} else if (packet.qos > 0) {
cb = this.outgoing[packet.messageId] ? this.outgoing[packet.messageId].cb : null
this.outgoingStore.put(packet, function (err) {
if (err) {
return cb && cb(err)
}
cbStorePut()
})
} else if (cb) {
cb(new Error('No connection to broker'))
}
}
/**
* _setupPingTimer - setup the ping timer
*
* @api private
*/
MqttClient.prototype._setupPingTimer = function () {
debug('_setupPingTimer :: keepalive %d (seconds)', this.options.keepalive)
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 () {
debug('_checkPing :: checking ping...')
if (this.pingResp) {
debug('_checkPing :: ping response received. Clearing flag and sending `pingreq`')
this.pingResp = false
this._sendPacket({ cmd: 'pingreq' })
} else {
// do a forced cleanup since socket will be in bad shape
debug('_checkPing :: calling _cleanUp with force true')
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) {
debug('_handleConnack')
var options = this.options
var version = options.protocolVersion
var rc = version === 5 ? packet.reasonCode : packet.returnCode
clearTimeout(this.connackTimer)
if (packet.properties) {
if (packet.properties.topicAliasMaximum) {
if (!options.properties) { options.properties = {} }
options.properties.topicAliasMaximum = packet.properties.topicAliasMaximum
}
if (packet.properties.serverKeepAlive && options.keepalive) {
options.keepalive = packet.properties.serverKeepAlive
this._shiftPingInterval()
}
if (packet.properties.maximumPacketSize) {
if (!options.properties) { options.properties = {} }
options.properties.maximumPacketSize = packet.properties.maximumPacketSize
}
}
if (rc === 0) {
this.reconnecting = false
this._onConnect(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: messageId
});
}
// 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) {
debug('_handlePublish: packet %o', packet)
done = typeof done !== 'undefined' ? done : nop
var topic = packet.topic.toString()
var message = packet.payload
var qos = packet.qos
var messageId = packet.messageId
var that = this
var options = this.options
var validReasonCodes = [0, 16, 128, 131, 135, 144, 145, 151, 153]
debug('_handlePublish: qos %d', qos)
switch (qos) {
case 2: {
options.customHandleAcks(topic, message, packet, function (error, code) {
if (!(error instanceof Error)) {
code = error
error = null
}
if (error) { return that.emit('error', error) }
if (validReasonCodes.indexOf(code) === -1) { return that.emit('error', new Error('Wrong reason code for pubrec')) }
if (code) {
that._sendPacket({cmd: 'pubrec', messageId: messageId, reasonCode: code}, done)
} else {
that.incomingStore.put(packet, function () {
that._sendPacket({cmd: 'pubrec', messageId: messageId}, done)
})
}
})
break
}
case 1: {
// emit the message event
options.customHandleAcks(topic, message, packet, function (error, code) {
if (!(error instanceof Error)) {
code = error
error = null
}
if (error) { return that.emit('error', error) }
if (validReasonCodes.indexOf(code) === -1) { return that.emit('error', new Error('Wrong reason code for puback')) }
if (!code) { that.emit('message', topic, message, packet) }
that.handleMessage(packet, function (err) {
if (err) {
return done && done(err)
}
that._sendPacket({cmd: 'puback', messageId: messageId, reasonCode: code}, done)
})
})
break
}
case 0:
// emit the message event
this.emit('message', topic, message, packet)
this.handleMessage(packet, done)
break
default:
// do nothing
debug('_handlePublish: unknown QoS. Doing 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 messageId = packet.messageId
var type = packet.cmd
var response = null
var cb = this.outgoing[messageId] ? this.outgoing[messageId].cb : null
var that = this
var err
if (!cb) {
debug('_handleAck :: Server sent an ack in error. Ignoring.')
// Server sent an ack in error, ignore it.
return
}
// Process
debug('_handleAck :: packet type', type)
switch (type) {
case 'pubcomp':
// same thing as puback for QoS 2
case 'puback':
var pubackRC = packet.reasonCode
// Callback - we're done
if (pubackRC && pubackRC > 0 && pubackRC !== 16) {
err = new Error('Publish error: ' + errors[pubackRC])
err.code = pubackRC
cb(err, packet)
}
delete this.outgoing[messageId]
this.outgoingStore.del(packet, cb)
break
case 'pubrec':
response = {
cmd: 'pubrel',
qos: 2,
messageId: messageId
}
var pubrecRC = packet.reasonCode
if (pubrecRC && pubrecRC > 0 && pubrecRC !== 16) {
err = new Error('Publish error: ' + errors[pubrecRC])
err.code = pubrecRC
cb(err, packet)
} else {
this._sendPacket(response)
}
break
case 'suback':
delete this.outgoing[messageId]
for (var grantedI = 0; grantedI < packet.granted.length; grantedI++) {
if ((packet.granted[grantedI] & 0x80) !== 0) {
// suback with Failure status
var topics = this.messageIdToTopic[messageId]
if (topics) {
topics.forEach(function (topic) {
delete that._resubscribeTopics[topic]
})
}
}
}
cb(null, packet)
break
case 'unsuback':
delete this.outgoing[messageId]
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) {
debug('handling pubrel packet')
callback = typeof callback !== 'undefined' ? callback : nop
var messageId = packet.messageId
var that = this
var comp = {cmd: 'pubcomp', messageId: messageId}
that.incomingStore.get(packet, function (err, pub) {
if (!err) {
that.emit('message', pub.topic, pub.payload, pub)
that.handleMessage(pub, function (err) {
if (err) {
return callback(err)
}
that.incomingStore.del(pub, nop)
that._sendPacket(comp, callback)
})
} else {
that._sendPacket(comp, callback)
}
})
}
/**
* _handleDisconnect
*
* @param {Object} packet
* @api private
*/
MqttClient.prototype._handleDisconnect = function (packet) {
this.emit('disconnect', packet)
}
/**
* _nextId
* @return unsigned int
*/
MqttClient.prototype._nextId = function () {
// id becomes current state of this.nextId and increments afterwards
var id = this.nextId++
// Ensure 16 bit unsigned int (max 65535, nextId got one higher)
if (this.nextId === 65536) {
this.nextId = 1
}
return id
}
/**
* getLastMessageId
* @return unsigned int
*/
MqttClient.prototype.getLastMessageId = function () {
return (this.nextId === 1) ? 65535 : (this.nextId - 1)
}
/**
* _resubscribe
* @api private
*/
MqttClient.prototype._resubscribe = function (connack) {
debug('_resubscribe')
var _resubscribeTopicsKeys = Object.keys(this._resubscribeTopics)
if (!this._firstConnection &&
(this.options.clean || (this.options.protocolVersion === 5 && !connack.sessionPresent)) &&
_resubscribeTopicsKeys.length > 0) {
if (this.options.resubscribe) {
if (this.options.protocolVersion === 5) {
debug('_resubscribe: protocolVersion 5')
for (var topicI = 0; topicI < _resubscribeTopicsKeys.length; topicI++) {
var resubscribeTopic = {}
resubscribeTopic[_resubscribeTopicsKeys[topicI]] = this._resubscribeTopics[_resubscribeTopicsKeys[topicI]]
resubscribeTopic.resubscribe = true
this.subscribe(resubscribeTopic, {properties: resubscribeTopic[_resubscribeTopicsKeys[topicI]].properties})
}
} else {
this._resubscribeTopics.resubscribe = true
this.subscribe(this._resubscribeTopics)
}
} else {
this._resubscribeTopics = {}
}
}
this._firstConnection = false
}
/**
* _onConnect
*
* @api private
*/
MqttClient.prototype._onConnect = function (packet) {
if (this.disconnected) {
this.emit('connect', packet)
return
}
var that = this
this._setupPingTimer()
this._resubscribe(packet)
this.connected = true
function startStreamProcess () {
var outStore = that.outgoingStore.createStream()
function clearStoreProcessing () {
that._storeProcessing = false
that._packetIdsDuringStoreProcessing = {}
}
that.once('close', remove)
outStore.on('error', function (err) {
clearStoreProcessing()
that.removeListener('close', remove)
that.emit('error', err)
})
function remove () {
outStore.destroy()
outStore = null
clearStoreProcessing()
}
function storeDeliver () {
// edge case, we wrapped this twice
if (!outStore) {
return
}
that._storeProcessing = true
var packet = outStore.read(1)
var cb
if (!packet) {
// read when data is available in the future
outStore.once('readable', storeDeliver)
return
}
// Skip already processed store packets
if (that._packetIdsDuringStoreProcessing[packet.messageId]) {
storeDeliver()
return
}
// Avoid unnecessary stream read operations when disconnected
if (!that.disconnecting && !that.reconnectTimer) {
cb = that.outgoing[packet.messageId] ? that.outgoing[packet.messageId].cb : null
that.outgoing[packet.messageId] = {
volatile: false,
cb: function (err, status) {
// Ensure that the original callback passed in to publish gets invoked
if (cb) {
cb(err, status)
}
storeDeliver()
}
}
that._packetIdsDuringStoreProcessing[packet.messageId] = true
that._sendPacket(packet)
} else if (outStore.destroy) {
outStore.destroy()
}
}
outStore.on('end', function () {
var allProcessed = true
for (var id in that._packetIdsDuringStoreProcessing) {
if (!that._packetIdsDuringStoreProcessing[id]) {
allProcessed = false
break
}
}
if (allProcessed) {
clearStoreProcessing()
that.removeListener('close', remove)
that.emit('connect', packet)
} else {
startStreamProcess()
}
})
storeDeliver()
}
// start flowing
startStreamProcess()
}
module.exports = MqttClient
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./store":7,"./validations":8,"_process":44,"debug":14,"events":27,"inherits":29,"mqtt-packet":34,"readable-stream":63,"reinterval":64,"xtend":74}],2:[function(require,module,exports){
(function (Buffer){
'use strict'
var Transform = require('readable-stream').Transform
var duplexify = require('duplexify')
/* global FileReader */
var my
var proxy
var stream
var isInitialized = false
function buildProxy () {
var proxy = new Transform()
proxy._write = function (chunk, encoding, next) {
my.sendSocketMessage({
data: chunk.buffer,
success: function () {
next()
},
fail: function () {
next(new Error())
}
})
}
proxy._flush = function socketEnd (done) {
my.closeSocket({
success: function () {
done()
}
})
}
return proxy
}
function setDefaultOpts (opts) {
if (!opts.hostname) {
opts.hostname = 'localhost'
}
if (!opts.path) {
opts.path = '/'
}
if (!opts.wsOptions) {
opts.wsOptions = {}
}
}
function buildUrl (opts, client) {
var protocol = opts.protocol === 'alis' ? 'wss' : 'ws'
var url = protocol + '://' + opts.hostname + opts.path
if (opts.port && opts.port !== 80 && opts.port !== 443) {
url = protocol + '://' + opts.hostname + ':' + opts.port + opts.path
}
if (typeof (opts.transformWsUrl) === 'function') {
url = opts.transformWsUrl(url, opts, client)
}
return url
}
function bindEventHandler () {
if (isInitialized) return
isInitialized = true
my.onSocketOpen(function () {
stream.setReadable(proxy)
stream.setWritable(proxy)
stream.emit('connect')
})
my.onSocketMessage(function (res) {
if (typeof res.data === 'string') {
var buffer = Buffer.from(res.data, 'base64')
proxy.push(buffer)
} else {
var reader = new FileReader()
reader.addEventListener('load', function () {
var data = reader.result
if (data instanceof ArrayBuffer) data = Buffer.from(data)
else data = Buffer.from(data, 'utf8')
proxy.push(data)
})
reader.readAsArrayBuffer(res.data)
}
})
my.onSocketClose(function () {
stream.end()
stream.destroy()
})
my.onSocketError(function (res) {
stream.destroy(res)
})
}
function buildStream (client, opts) {
opts.hostname = opts.hostname || opts.host
if (!opts.hostname) {
throw new Error('Could not determine host. Specify host manually.')
}
var websocketSubProtocol =
(opts.protocolId === 'MQIsdp') && (opts.protocolVersion === 3)
? 'mqttv3.1'
: 'mqtt'
setDefaultOpts(opts)
var url = buildUrl(opts, client)
my = opts.my
my.connectSocket({
url: url,
protocols: websocketSubProtocol
})
proxy = buildProxy()
stream = duplexify.obj()
bindEventHandler()
return stream
}
module.exports = buildStream
}).call(this,require("buffer").Buffer)
},{"buffer":12,"duplexify":16,"readable-stream":63}],3:[function(require,module,exports){
'use strict'
var net = require('net')
var debug = require('debug')('mqttjs:tcp')
/*
variables port and host can be removed since
you have all required information in opts object
*/
function streamBuilder (client, opts) {
var port, host
opts.port = opts.port || 1883
opts.hostname = opts.hostname || opts.host || 'localhost'
port = opts.port
host = opts.hostname
debug('port %d and host %s', port, host)
return net.createConnection(port, host)
}
module.exports = streamBuilder
},{"debug":14,"net":11}],4:[function(require,module,exports){
'use strict'
var tls = require('tls')
var debug = require('debug')('mqttjs:tls')
function buildBuilder (mqttClient, opts) {
var connection
opts.port = opts.port || 8883
opts.host = opts.hostname || opts.host || 'localhost'
opts.servername = opts.host
opts.rejectUnauthorized = opts.rejectUnauthorized !== false
delete opts.path
debug('port %d host %s rejectUnauthorized %b', opts.port, opts.host, opts.rejectUnauthorized)
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
},{"debug":14,"tls":11}],5:[function(require,module,exports){
(function (process,Buffer){
'use strict'
const WS = require('ws')
const debug = require('debug')('mqttjs:ws')
const duplexify = require('duplexify')
const Transform = require('readable-stream').Transform
let WSS_OPTIONS = [
'rejectUnauthorized',
'ca',
'cert',
'key',
'pfx',
'passphrase'
]
// eslint-disable-next-line camelcase
const IS_BROWSER = (typeof process !== 'undefined' && process.title === 'browser') || typeof __webpack_require__ === 'function'
function buildUrl (opts, client) {
let 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) {
let options = opts
if (!opts.hostname) {
options.hostname = 'localhost'
}
if (!opts.port) {
if (opts.protocol === 'wss') {
options.port = 443
} else {
options.port = 80
}
}
if (!opts.path) {
options.path = '/'
}
if (!opts.wsOptions) {
options.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)) {
options.wsOptions[prop] = opts[prop]
}
})
}
return options
}
function setDefaultBrowserOpts (opts) {
let options = setDefaultOpts(opts)
if (!options.hostname) {
options.hostname = options.host
}
if (!options.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.')
}
const parsed = new URL(document.URL)
options.hostname = parsed.hostname
if (!options.port) {
options.port = parsed.port
}
}
// objectMode should be defined for logic
if (options.objectMode === undefined) {
options.objectMode = !(options.binary === true || options.binary === undefined)
}
return options
}
function createWebSocket (client, url, opts) {
debug('createWebSocket')
debug('protocol: ' + opts.protocolId + ' ' + opts.protocolVersion)
const websocketSubProtocol =
(opts.protocolId === 'MQIsdp') && (opts.protocolVersion === 3)
? 'mqttv3.1'
: 'mqtt'
debug('creating new Websocket for url: ' + url + ' and protocol: ' + websocketSubProtocol)
let socket = new WS(url, [websocketSubProtocol], opts.wsOptions)
return socket
}
function createBrowserWebSocket (client, opts) {
const websocketSubProtocol =
(opts.protocolId === 'MQIsdp') && (opts.protocolVersion === 3)
? 'mqttv3.1'
: 'mqtt'
let url = buildUrl(opts, client)
/* global WebSocket */
let socket = new WebSocket(url, [websocketSubProtocol])
socket.binaryType = 'arraybuffer'
return socket
}
function streamBuilder (client, opts) {
debug('streamBuilder')
let options = setDefaultOpts(opts)
const url = buildUrl(options, client)
let socket = createWebSocket(client, url, options)
let webSocketStream = WS.createWebSocketStream(socket, options.wsOptions)
webSocketStream.url = url
return webSocketStream
}
function browserStreamBuilder (client, opts) {
debug('browserStreamBuilder')
let stream
let options = setDefaultBrowserOpts(opts)
// sets the maximum socket buffer size before throttling
const bufferSize = options.browserBufferSize || 1024 * 512
const bufferTimeout = opts.browserBufferTimeout || 1000
const coerceToBuffer = !opts.objectMode
let socket = createBrowserWebSocket(client, opts)
let proxy = buildProxy(opts, socketWriteBrowser, socketEndBrowser)
if (!opts.objectMode) {
proxy._writev = writev
}
proxy.on('close', () => { socket.close() })
const eventListenerSupport = (typeof socket.addEventListener === 'undefined')
// was already open when passed in
if (socket.readyState === socket.OPEN) {
stream = proxy
} else {
stream = stream = duplexify(undefined, undefined, opts)
if (!opts.objectMode) {
stream._writev = writev
}
if (eventListenerSupport) {
socket.addEventListener('open', onopen)
} else {
socket.onopen = onopen
}
}
stream.socket = socket
if (eventListenerSupport) {
socket.addEventListener('close', onclose)
socket.addEventListener('error', onerror)
socket.addEventListener('message', onmessage)
} else {
socket.onclose = onclose
socket.onerror = onerror
socket.onmessage = onmessage
}
// methods for browserStreamBuilder
function buildProxy (options, socketWrite, socketEnd) {
let proxy = new Transform({
objectModeMode: options.objectMode
})
proxy._write = socketWrite
proxy._flush = socketEnd
return proxy
}
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) {
let data = event.data
if (data instanceof ArrayBuffer) data = Buffer.from(data)
else data = Buffer.from(data, 'utf8')
proxy.push(data)
}
// this is to be enabled only if objectMode is false
function writev (chunks, cb) {
const buffers = new Array(chunks.length)
for (let 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)
}
function socketWriteBrowser (chunk, enc, next) {
if (socket.bufferedAmount > bufferSize) {
// throttle data until buffered amount is reduced.
setTimeout(socketWriteBrowser, bufferTimeout, chunk, enc, next)
}
if (coerceToBuffer && typeof chunk === 'string') {
chunk = Buffer.from(chunk, 'utf8')
}
try {
socket.send(chunk)
} catch (err) {
return next(err)
}
next()
}
function socketEndBrowser (done) {
socket.close()
done()
}
// end methods for browserStreamBuilder
return stream
}
if (IS_BROWSER) {
module.exports = browserStreamBuilder
} else {
module.exports = streamBuilder
}
}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":44,"buffer":12,"debug":14,"duplexify":16,"readable-stream":63,"ws":73}],6:[function(require,module,exports){
(function (Buffer){
'use strict'
var Transform = require('readable-stream').Transform
var duplexify = require('duplexify')
/* global wx */
var socketTask
var proxy
var stream
function buildProxy () {
var proxy = new Transform()
proxy._write = function (chunk, encoding, next) {
socketTask.send({
data: chunk.buffer,
success: function () {
next()
},
fail: function (errMsg) {
next(new Error(errMsg))
}
})
}
proxy._flush = function socketEnd (done) {
socketTask.close({
success: function () {
done()
}
})
}
return proxy
}
function setDefaultOpts (opts) {
if (!opts.hostname) {
opts.hostname = 'localhost'
}
if (!opts.path) {
opts.path = '/'
}
if (!opts.wsOptions) {
opts.wsOptions = {}
}
}
function buildUrl (opts, client) {
var protocol = opts.protocol === 'wxs' ? 'wss' : 'ws'
var url = protocol + '://' + opts.hostname + opts.path
if (opts.port && opts.port !== 80 && opts.port !== 443) {
url = protocol + '://' + opts.hostname + ':' + opts.port + opts.path
}
if (typeof (opts.transformWsUrl) === 'function') {
url = opts.transformWsUrl(url, opts, client)
}
return url
}
function bindEventHandler () {
socketTask.onOpen(function () {
stream.setReadable(proxy)
stream.setWritable(proxy)
stream.emit('connect')
})
socketTask.onMessage(function (res) {
var data = res.data
if (data instanceof ArrayBuffer) data = Buffer.from(data)
else data = Buffer.from(data, 'utf8')
proxy.push(data)
})
socketTask.onClose(function () {
stream.end()
stream.destroy()
})
socketTask.onError(function (res) {
stream.destroy(new Error(res.errMsg))
})
}
function buildStream (client, opts) {
opts.hostname = opts.hostname || opts.host
if (!opts.hostname) {
throw new Error('Could not determine host. Specify host manually.')
}
var websocketSubProtocol =
(opts.protocolId === 'MQIsdp') && (opts.protocolVersion === 3)
? 'mqttv3.1'
: 'mqtt'
setDefaultOpts(opts)
var url = buildUrl(opts, client)
socketTask = wx.connectSocket({
url: url,
protocols: [websocketSubProtocol]
})
proxy = buildProxy()
stream = duplexify.obj()
stream._destroy = function (err, cb) {
socketTask.close({
success: function () {
cb && cb(err)
}
})
}
var destroyRef = stream.destroy
stream.destroy = function () {
stream.destroy = destroyRef
var self = this
setTimeout(function () {
socketTask.close({
fail: function () {
self._destroy(new Error())
}
})
}, 0)
}.bind(stream)
bindEventHandler()
return stream
}
module.exports = buildStream
}).call(this,require("buffer").Buffer)
},{"buffer":12,"duplexify":16,"readable-stream":63}],7:[function(require,module,exports){
'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 = new Map()
}
/**
* Adds a packet to the store, a packet is
* anything that has a messageId property.
*
*/
Store.prototype.put = function (packet, cb) {
this._inflights.set(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 destroyed = false
var values = []
var i = 0
this._inflights.forEach(function (value, key) {
values.push(value)
})
stream._read = function () {
if (!destroyed && i < values.length) {
this.push(values[i++])
} else {
this.push(null)
}
}
stream.destroy = function () {
if (destroyed) {
return
}
var self = this
destroyed = true
setTimeout(function () {
self.emit('close')
}, 0)
}
return stream
}
/**
* deletes a packet from the store.
*/
Store.prototype.del = function (packet, cb) {
packet = this._inflights.get(packet.messageId)
if (packet) {
this._inflights.delete(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.get(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
},{"readable-stream":63,"xtend":74}],8:[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
}
},{}],9:[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 debug = require('debug')('mqttjs')
var protocols = {}
// eslint-disable-next-line camelcase
if ((typeof process !== 'undefined' && process.title !== 'browser') || typeof __webpack_require__ !== 'function') {
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.ali = require('./ali')
protocols.alis = require('./ali')
}
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(/^(.+):(.+)$/)
if (matches) {
opts.username = matches[1]
opts.password = matches[2]
} else {
opts.username = opts.auth
}
}
}
/**
* connect - connect to an MQTT broker.
*
* @param {String} [brokerUrl] - url of the broker, optional
* @param {Object} opts - see MqttClient#constructor
*/
function connect (brokerUrl, opts) {
debug('connecting to an MQTT broker...')
if ((typeof brokerUrl === 'object') && !opts) {
opts = brokerUrl
brokerUrl = null
}
opts = opts || {}
if (brokerUrl) {
var parsed = url.parse(brokerUrl, true)
if (parsed.port != null) {
parsed.port = Number(parsed.port)
}
opts = xtend(parsed, opts)
if (opts.protocol === null) {
throw new Error('Missing protocol')
}
opts.protocol = opts.protocol.replace(/:$/, '')
}
// 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', 'alis'].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
case 'ali':
opts.protocol = 'alis'
break
default:
throw new Error('Unknown protocol for secure connection: "' + opts.protocol + '"!')
}
}
} else {
// A cert and key was provided, however no protocol was specified, so we will throw an error.
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',
'ali',
'alis'
].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')
}
if (opts.protocol) {
opts.defaultProtocol = opts.protocol
}
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.protocol = (!opts.servers[client._reconnectCount].protocol ? opts.defaultProtocol : opts.servers[client._reconnectCount].protocol)
opts.hostname = opts.host
client._reconnectCount++
}
debug('calling streambuilder for', opts.protocol)
return protocols[opts.protocol](client, opts)
}
var client = new MqttClient(wrapper, opts)
client.on('error', function () { /* Automatically set up client error handling */ })
return client
}
module.exports = connect
module.exports.connect = connect
module.exports.MqttClient = MqttClient
module.exports.Store = Store
}).call(this,require('_process'))
},{"../client":1,"../store":7,"./ali":2,"./tcp":3,"./tls":4,"./ws":5,"./wx":6,"_process":44,"debug":14,"url":69,"xtend":74}],10:[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
}
// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63
function getLens (b64) {
var len = b64.length
if (len % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// Trim off extra bytes after placeholder bytes are found
// See: https://github.com/beatgammit/base64-js/issues/42
var validLen = b64.indexOf('=')
if (validLen === -1) validLen = len
var placeHoldersLen = validLen === len
? 0
: 4 - (validLen % 4)
return [validLen, placeHoldersLen]
}
// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
var lens = getLens(b64)
var validLen = lens[0]
var placeHoldersLen = lens[1]
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}
function _byteLength (b64, validLen, placeHoldersLen) {
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}
function toByteArray (b64) {
var tmp
var lens = getLens(b64)
var validLen = lens[0]
var placeHoldersLen = lens[1]
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
var curByte = 0
// if there are placeholders, only get up to the last complete 4 chars
var len = placeHoldersLen > 0
? validLen - 4
: validLen
var i
for (i = 0; i < len; 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[curByte++] = (tmp >> 16) & 0xFF
arr[curByte++] = (tmp >> 8) & 0xFF
arr[curByte++] = tmp & 0xFF
}
if (placeHoldersLen === 2) {
tmp =
(revLookup[b64.charCodeAt(i)] << 2) |
(revLookup[b64.charCodeAt(i + 1)] >> 4)
arr[curByte++] = tmp & 0xFF
}
if (placeHoldersLen === 1) {
tmp =
(revLookup[b64.charCodeAt(i)] << 10) |
(revLookup[b64.charCodeAt(i + 1)] << 4) |
(revLookup[b64.charCodeAt(i + 2)] >> 2)
arr[curByte++] = (tmp >> 8) & 0xFF
arr[curByte++] = 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) & 0xFF0000) +
((uint8[i + 1] << 8) & 0xFF00) +
(uint8[i + 2] & 0xFF)
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 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]
parts.push(
lookup[tmp >> 2] +
lookup[(tmp << 4) & 0x3F] +
'=='
)
} else if (extraBytes === 2) {
tmp = (uint8[len - 2] << 8) + uint8[len - 1]
parts.push(
lookup[tmp >> 10] +
lookup[(tmp >> 4) & 0x3F] +
lookup[(tmp << 2) & 0x3F] +
'='
)
}
return parts.join('')
}
},{}],11:[function(require,module,exports){
},{}],12:[function(require,module,exports){
(function (Buffer){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <https://feross.org>
* @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
}
}
Object.defineProperty(Buffer.prototype, 'parent', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.buffer
}
})
Object.defineProperty(Buffer.prototype, 'offset', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.byteOffset
}
})
function createBuffer (length) {
if (length > K_MAX_LENGTH) {
throw new RangeError('The value "' + length + '" is invalid for option "size"')
}
// 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 TypeError(
'The "string" argument must be of type string. Received type number'
)
}
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 != null &&
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 === 'string') {
return fromString(value, encodingOrOffset)
}
if (ArrayBuffer.isView(value)) {
return fromArrayLike(value)
}
if (value == null) {
throw TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof value)
)
}
if (isInstance(value, ArrayBuffer) ||
(value && isInstance(value.buffer, ArrayBuffer))) {
return fromArrayBuffer(value, encodingOrOffset, length)
}
if (typeof value === 'number') {
throw new TypeError(
'The "value" argument must not be of type number. Received type number'
)
}
var valueOf = value.valueOf && value.valueOf()
if (valueOf != null && valueOf !== value) {
return Buffer.from(valueOf, encodingOrOffset, length)
}
var b = fromObject(value)
if (b) return b
if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
typeof value[Symbol.toPrimitive] === 'function') {
return Buffer.from(
value[Symbol.toPrimitive]('string'), encodingOrOffset, length
)
}
throw new TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof 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 of type number')
} else if (size < 0) {
throw new RangeError('The value "' + size + '" is invalid for option "size"')
}
}
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('Unknown encoding: ' + 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 outside of buffer bounds')
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('"length" is outside of buffer 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.length !== undefined) {
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)
}
}
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 &&
b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}
Buffer.compare = function compare (a, b) {
if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError(
'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
)
}
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 (isInstance(buf, Uint8Array)) {
buf = Buffer.from(buf)
}
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 (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
return string.byteLength
}
if (typeof string !== 'string') {
throw new TypeError(
'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
'Received type ' + typeof string
)
}
var len = string.length
var mustMatch = (arguments.length > 2 && arguments[2] === true)
if (!mustMatch && 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':
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 mustMatch ? -1 : 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.toLocaleString = Buffer.prototype.toString
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
str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
if (this.length > max) str += ' ... '
return '<Buffer ' + str + '>'
}
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
if (isInstance(target, Uint8Array)) {
target = Buffer.from(target, target.offset, target.byteLength)
}
if (!Buffer.isBuffer(target)) {
throw new TypeError(
'The "target" argument must be one of type Buffer or Uint8Array. ' +
'Received type ' + (typeof target)
)
}
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
}
}
var strLen = string.length
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 (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
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('Index out of range')
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
if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
// Use built-in when available, missing from IE11
this.copyWithin(targetStart, start, end)
} else if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (var i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start]
}
} else {
Uint8Array.prototype.set.call(
target,
this.subarray(start, end),
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 (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)
}
if (val.length === 1) {
var code = val.charCodeAt(0)
if ((encoding === 'utf8' && code < 128) ||
encoding === 'latin1') {
// Fast path: If `val` fits into a single byte, use that numeric value.
val = code
}
}
} 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
: Buffer.from(val, encoding)
var len = bytes.length
if (len === 0) {
throw new TypeError('The value "' + val +
'" is invalid for argument "value"')
}
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 takes equal signs as end of the Base64 encoding
str = str.split('=')[0]
// 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
}
// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
return obj instanceof type ||
(obj != null && obj.constructor != null && obj.constructor.name != null &&
obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
// For IE11 support
return obj !== obj // eslint-disable-line no-self-compare
}
}).call(this,require("buffer").Buffer)
},{"base64-js":10,"buffer":12,"ieee754":28}],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":30}],14:[function(require,module,exports){
(function (process){
/* eslint-env browser */
/**
* This is the web browser implementation of `debug()`.
*/
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = localstorage();
/**
* Colors.
*/
exports.colors = [
'#0000CC',
'#0000FF',
'#0033CC',
'#0033FF',
'#0066CC',
'#0066FF',
'#0099CC',
'#0099FF',
'#00CC00',
'#00CC33',
'#00CC66',
'#00CC99',
'#00CCCC',
'#00CCFF',
'#3300CC',
'#3300FF',
'#3333CC',
'#3333FF',
'#3366CC',
'#3366FF',
'#3399CC',
'#3399FF',
'#33CC00',
'#33CC33',
'#33CC66',
'#33CC99',
'#33CCCC',
'#33CCFF',
'#6600CC',
'#6600FF',
'#6633CC',
'#6633FF',
'#66CC00',
'#66CC33',
'#9900CC',
'#9900FF',
'#9933CC',
'#9933FF',
'#99CC00',
'#99CC33',
'#CC0000',
'#CC0033',
'#CC0066',
'#CC0099',
'#CC00CC',
'#CC00FF',
'#CC3300',
'#CC3333',
'#CC3366',
'#CC3399',
'#CC33CC',
'#CC33FF',
'#CC6600',
'#CC6633',
'#CC9900',
'#CC9933',
'#CCCC00',
'#CCCC33',
'#FF0000',
'#FF0033',
'#FF0066',
'#FF0099',
'#FF00CC',
'#FF00FF',
'#FF3300',
'#FF3333',
'#FF3366',
'#FF3399',
'#FF33CC',
'#FF33FF',
'#FF6600',
'#FF6633',
'#FF9900',
'#FF9933',
'#FFCC00',
'#FFCC33'
];
/**
* Currently only WebKit-based Web Inspectors, Firefox >= v31,
* and the Firebug extension (any Firefox version) are known
* to support "%c" CSS customizations.
*
* TODO: add a `localStorage` variable to explicitly enable/disable colors
*/
// eslint-disable-next-line complexity
function useColors() {
// NB: In an Electron preload script, document will be defined but not fully
// initialized. Since we know we're in Chrome, we'll just detect this case
// explicitly
if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
return true;
}
// Internet Explorer and Edge do not support colors.
if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
return false;
}
// Is webkit? http://stackoverflow.com/a/16459606/376773
// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||
// Is firebug? http://stackoverflow.com/a/398120/376773
(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||
// Is firefox >= v31?
// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||
// Double check webkit in userAgent just in case we are in a worker
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/));
}
/**
* Colorize log arguments if enabled.
*
* @api public
*/
function formatArgs(args) {
args[0] = (this.useColors ? '%c' : '') +
this.namespace +
(this.useColors ? ' %c' : ' ') +
args[0] +
(this.useColors ? '%c ' : ' ') +
'+' + module.exports.humanize(this.diff);
if (!this.useColors) {
return;
}
const c = 'color: ' + this.color;
args.splice(1, 0, c, 'color: inherit');
// The final "%c" is somewhat tricky, because there could be other
// arguments passed either before or after the %c, so we need to
// figure out the correct index to insert the CSS into
let index = 0;
let lastC = 0;
args[0].replace(/%[a-zA-Z%]/g, match => {
if (match === '%%') {
return;
}
index++;
if (match === '%c') {
// We only are interested in the *last* %c
// (the user may have provided their own)
lastC = index;
}
});
args.splice(lastC, 0, c);
}
/**
* Invokes `console.log()` when available.
* No-op when `console.log` is not a "function".
*
* @api public
*/
function log(...args) {
// This hackery is required for IE8/9, where
// the `console.log` function doesn't have 'apply'
return typeof console === 'object' &&
console.log &&
console.log(...args);
}
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
try {
if (namespaces) {
exports.storage.setItem('debug', namespaces);
} else {
exports.storage.removeItem('debug');
}
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
let r;
try {
r = exports.storage.getItem('debug');
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
// If debug isn't set in LS, and we're in Electron, try to load $DEBUG
if (!r && typeof process !== 'undefined' && 'env' in process) {
r = process.env.DEBUG;
}
return r;
}
/**
* Localstorage attempts to return the localstorage.
*
* This is necessary because safari throws
* when a user disables cookies/localstorage
* and you attempt to access it.
*
* @return {LocalStorage}
* @api private
*/
function localstorage() {
try {
// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
// The Browser also has localStorage in the global context.
return localStorage;
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
}
module.exports = require('./common')(exports);
const {formatters} = module.exports;
/**
* Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
*/
formatters.j = function (v) {
try {
return JSON.stringify(v);
} catch (error) {
return '[UnexpectedJSONParseError]: ' + error.message;
}
};
}).call(this,require('_process'))
},{"./common":15,"_process":44}],15:[function(require,module,exports){
/**
* This is the common logic for both the Node.js and web browser
* implementations of `debug()`.
*/
function setup(env) {
createDebug.debug = createDebug;
createDebug.default = createDebug;
createDebug.coerce = coerce;
createDebug.disable = disable;
createDebug.enable = enable;
createDebug.enabled = enabled;
createDebug.humanize = require('ms');
Object.keys(env).forEach(key => {
createDebug[key] = env[key];
});
/**
* Active `debug` instances.
*/
createDebug.instances = [];
/**
* The currently active debug mode names, and names to skip.
*/
createDebug.names = [];
createDebug.skips = [];
/**
* Map of special "%n" handling functions, for the debug "format" argument.
*
* Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
*/
createDebug.formatters = {};
/**
* Selects a color for a debug namespace
* @param {String} namespace The namespace string for the for the debug instance to be colored
* @return {Number|String} An ANSI color code for the given namespace
* @api private
*/
function selectColor(namespace) {
let hash = 0;
for (let i = 0; i < namespace.length; i++) {
hash = ((hash << 5) - hash) + namespace.charCodeAt(i);
hash |= 0; // Convert to 32bit integer
}
return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
}
createDebug.selectColor = selectColor;
/**
* Create a debugger with the given `namespace`.
*
* @param {String} namespace
* @return {Function}
* @api public
*/
function createDebug(namespace) {
let prevTime;
function debug(...args) {
// Disabled?
if (!debug.enabled) {
return;
}
const self = debug;
// Set `diff` timestamp
const curr = Number(new Date());
const ms = curr - (prevTime || curr);
self.diff = ms;
self.prev = prevTime;
self.curr = curr;
prevTime = curr;
args[0] = createDebug.coerce(args[0]);
if (typeof args[0] !== 'string') {
// Anything else let's inspect with %O
args.unshift('%O');
}
// Apply any `formatters` transformations
let index = 0;
args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {
// If we encounter an escaped % then don't increase the array index
if (match === '%%') {
return match;
}
index++;
const formatter = createDebug.formatters[format];
if (typeof formatter === 'function') {
const val = args[index];
match = formatter.call(self, val);
// Now we need to remove `args[index]` since it's inlined in the `format`
args.splice(index, 1);
index--;
}
return match;
});
// Apply env-specific formatting (colors, etc.)
createDebug.formatArgs.call(self, args);
const logFn = self.log || createDebug.log;
logFn.apply(self, args);
}
debug.namespace = namespace;
debug.enabled = createDebug.enabled(namespace);
debug.useColors = createDebug.useColors();
debug.color = selectColor(namespace);
debug.destroy = destroy;
debug.extend = extend;
// Debug.formatArgs = formatArgs;
// debug.rawLog = rawLog;
// env-specific initialization logic for debug instances
if (typeof createDebug.init === 'function') {
createDebug.init(debug);
}
createDebug.instances.push(debug);
return debug;
}
function destroy() {
const index = createDebug.instances.indexOf(this);
if (index !== -1) {
createDebug.instances.splice(index, 1);
return true;
}
return false;
}
function extend(namespace, delimiter) {
const newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
newDebug.log = this.log;
return newDebug;
}
/**
* Enables a debug mode by namespaces. This can include modes
* separated by a colon and wildcards.
*
* @param {String} namespaces
* @api public
*/
function enable(namespaces) {
createDebug.save(namespaces);
createDebug.names = [];
createDebug.skips = [];
let i;
const split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
const len = split.length;
for (i = 0; i < len; i++) {
if (!split[i]) {
// ignore empty strings
continue;
}
namespaces = split[i].replace(/\*/g, '.*?');
if (namespaces[0] === '-') {
createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
} else {
createDebug.names.push(new RegExp('^' + namespaces + '$'));
}
}
for (i = 0; i < createDebug.instances.length; i++) {
const instance = createDebug.instances[i];
instance.enabled = createDebug.enabled(instance.namespace);
}
}
/**
* Disable debug output.
*
* @return {String} namespaces
* @api public
*/
function disable() {
const namespaces = [
...createDebug.names.map(toNamespace),
...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)
].join(',');
createDebug.enable('');
return namespaces;
}
/**
* Returns true if the given mode name is enabled, false otherwise.
*
* @param {String} name
* @return {Boolean}
* @api public
*/
function enabled(name) {
if (name[name.length - 1] === '*') {
return true;
}
let i;
let len;
for (i = 0, len = createDebug.skips.length; i < len; i++) {
if (createDebug.skips[i].test(name)) {
return false;
}
}
for (i = 0, len = createDebug.names.length; i < len; i++) {
if (createDebug.names[i].test(name)) {
return true;
}
}
return false;
}
/**
* Convert regexp to namespace
*
* @param {RegExp} regxep
* @return {String} namespace
* @api private
*/
function toNamespace(regexp) {
return regexp.toString()
.substring(2, regexp.toString().length - 2)
.replace(/\.\*\?$/, '*');
}
/**
* Coerce `val`.
*
* @param {Mixed} val
* @return {Mixed}
* @api private
*/
function coerce(val) {
if (val instanceof Error) {
return val.stack || val.message;
}
return val;
}
createDebug.enable(createDebug.load());
return createDebug;
}
module.exports = setup;
},{"ms":41}],16:[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 = (Buffer.from && Buffer.from !== Uint8Array.from)
? Buffer.from([0])
: new Buffer([0])
var onuncork = function(self, fn) {
if (self._corked) self.once('uncork', fn)
else fn()
}
var autoDestroy = function (self, err) {
if (self._autoDestroy) self.destroy(err)
}
var destroyer = function(self, end) {
return function(err) {
if (err) autoDestroy(self, 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._autoDestroy = !opts || opts.autoDestroy !== false
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":44,"buffer":12,"end-of-stream":26,"inherits":29,"readable-stream":25,"stream-shift":66}],17:[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';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
keys.push(key);
}return keys;
};
/*</replacement>*/
module.exports = Duplex;
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');
util.inherits(Duplex, Readable);
{
// avoid scope creep, the keys array can then be collected
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);
}
Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._writableState.highWaterMark;
}
});
// 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.
pna.nextTick(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();
pna.nextTick(cb, err);
};
},{"./_stream_readable":19,"./_stream_writable":21,"core-util-is":13,"inherits":29,"process-nextick-args":43}],18:[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');
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
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":20,"core-util-is":13,"inherits":29}],19:[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';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
module.exports = Readable;
/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/
/*<replacement>*/
var Duplex;
/*</replacement>*/
Readable.ReadableState = ReadableState;
/*<replacement>*/
var EE = require('events').EventEmitter;
var EElistenerCount = function (emitter, type) {
return emitter.listeners(type).length;
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
/*<replacement>*/
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;
}
/*</replacement>*/
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
debug = debugUtil.debuglog('stream');
} else {
debug = function () {};
}
/*</replacement>*/
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);
// 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 || {};
// Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream.
// These options can be provided separately as readableXXX and writableXXX.
var isDuplex = stream instanceof Duplex;
// 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 (isDuplex) 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 readableHwm = options.readableHighWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = 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) pna.nextTick(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;
pna.nextTick(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) pna.nextTick(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) {
pna.nextTick(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;
pna.nextTick(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 _this = this;
var state = this._readableState;
var paused = false;
stream.on('end', function () {
debug('wrapped end');
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length) _this.push(chunk);
}
_this.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 = _this.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], this.emit.bind(this, kProxyEvents[n]));
}
// when we try to consume some more bytes, simply unpause the
// underlying stream.
this._read = function (n) {
debug('wrapped _read', n);
if (paused) {
paused = false;
stream.resume();
}
};
return this;
};
Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._readableState.highWaterMark;
}
});
// 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;
pna.nextTick(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 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":17,"./internal/streams/BufferList":22,"./internal/streams/destroy":23,"./internal/streams/stream":24,"_process":44,"core-util-is":13,"events":27,"inherits":29,"isarray":31,"process-nextick-args":43,"safe-buffer":65,"string_decoder/":67,"util":11}],20:[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');
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
util.inherits(Transform, Duplex);
function afterTransform(er, data) {
var ts = this._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (!cb) {
return this.emit('error', new Error('write callback called multiple times'));
}
ts.writechunk = null;
ts.writecb = null;
if (data != null) // single equals check for both `null` and `undefined`
this.push(data);
cb(er);
var rs = this._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
this._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform)) return new Transform(options);
Duplex.call(this, options);
this._transformState = {
afterTransform: afterTransform.bind(this),
needTransform: false,
transforming: false,
writecb: null,
writechunk: null,
writeencoding: null
};
// 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.on('prefinish', prefinish);
}
function prefinish() {
var _this = this;
if (typeof this._flush === 'function') {
this._flush(function (er, data) {
done(_this, er, data);
});
} else {
done(this, null, null);
}
}
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 _this2 = this;
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
_this2.emit('close');
});
};
function done(stream, er, data) {
if (er) return stream.emit('error', er);
if (data != null) // single equals check for both `null` and `undefined`
stream.push(data);
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');
if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');
return stream.push(null);
}
},{"./_stream_duplex":17,"core-util-is":13,"inherits":29}],21:[function(require,module,exports){
(function (process,global,setImmediate){
// 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';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
module.exports = Writable;
/* <replacement> */
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);
};
}
/* </replacement> */
/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/
/*<replacement>*/
var Duplex;
/*</replacement>*/
Writable.WritableState = WritableState;
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
/*<replacement>*/
var internalUtil = {
deprecate: require('util-deprecate')
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
/*<replacement>*/
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;
}
/*</replacement>*/
var destroyImpl = require('./internal/streams/destroy');
util.inherits(Writable, Stream);
function nop() {}
function WritableState(options, stream) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {};
// Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream.
// These options can be provided separately as readableXXX and writableXXX.
var isDuplex = stream instanceof Duplex;
// object stream flag to indicate whether or not this stream
// contains buffers or objects.
this.objectMode = !!options.objectMode;
if (isDuplex) 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 writableHwm = options.writableHighWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = 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;
if (this !== Writable) return false;
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);
pna.nextTick(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);
pna.nextTick(cb, er);
valid = false;
}
return valid;
}
Writable.prototype.write = function (chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
var isBuf = !state.objectMode && _isUint8Array(chunk);
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;
}
Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._writableState.highWaterMark;
}
});
// 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
pna.nextTick(cb, er);
// this can emit finish, and it will always happen
// after error
pna.nextTick(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) {
/*<replacement>*/
asyncWrite(afterWrite, stream, state, finished, cb);
/*</replacement>*/
} 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);
}
state.bufferedRequestCount = 0;
} 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;
state.bufferedRequestCount--;
// 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.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;
pna.nextTick(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) pna.nextTick(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 : {},require("timers").setImmediate)
},{"./_stream_duplex":17,"./internal/streams/destroy":23,"./internal/streams/stream":24,"_process":44,"core-util-is":13,"inherits":29,"process-nextick-args":43,"safe-buffer":65,"timers":68,"util-deprecate":71}],22:[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;
var util = require('util');
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;
}();
if (util && util.inspect && util.inspect.custom) {
module.exports.prototype[util.inspect.custom] = function () {
var obj = util.inspect({ length: this.length });
return this.constructor.name + ' ' + obj;
};
}
},{"safe-buffer":65,"util":11}],23:[function(require,module,exports){
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
// 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)) {
pna.nextTick(emitErrorNT, this, err);
}
return this;
}
// 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) {
pna.nextTick(emitErrorNT, _this, err);
if (_this._writableState) {
_this._writableState.errorEmitted = true;
}
} else if (cb) {
cb(err);
}
});
return this;
}
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":43}],24:[function(require,module,exports){
module.exports = require('events').EventEmitter;
},{"events":27}],25:[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":17,"./lib/_stream_passthrough.js":18,"./lib/_stream_readable.js":19,"./lib/_stream_transform.js":20,"./lib/_stream_writable.js":21}],26:[function(require,module,exports){
(function (process){
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 cancelled = false;
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 onerror = function(err) {
callback.call(stream, err);
};
var onclose = function() {
process.nextTick(onclosenexttick);
};
var onclosenexttick = function() {
if (cancelled) return;
if (readable && !(rs && (rs.ended && !rs.destroyed))) return callback.call(stream, new Error('premature close'));
if (writable && !(ws && (ws.ended && !ws.destroyed))) 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', onerror);
stream.on('close', onclose);
return function() {
cancelled = true;
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', onerror);
stream.removeListener('close', onclose);
};
};
module.exports = eos;
}).call(this,require('_process'))
},{"_process":44,"once":42}],27:[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.
var objectCreate = Object.create || objectCreatePolyfill
var objectKeys = Object.keys || objectKeysPolyfill
var bind = Function.prototype.bind || functionBindPolyfill
function EventEmitter() {
if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {
this._events = objectCreate(null);
this._eventsCount = 0;
}
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.
var defaultMaxListeners = 10;
var hasDefineProperty;
try {
var o = {};
if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });
hasDefineProperty = o.x === 0;
} catch (err) { hasDefineProperty = false }
if (hasDefineProperty) {
Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
enumerable: true,
get: function() {
return defaultMaxListeners;
},
set: function(arg) {
// check whether the input is a positive number (whose value is zero or
// greater and not a NaN).
if (typeof arg !== 'number' || arg < 0 || arg !== arg)
throw new TypeError('"defaultMaxListeners" must be a positive number');
defaultMaxListeners = arg;
}
});
} else {
EventEmitter.defaultMaxListeners = defaultMaxListeners;
}
// 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 setMaxListeners(n) {
if (typeof n !== 'number' || n < 0 || isNaN(n))
throw new TypeError('"n" argument must be a positive number');
this._maxListeners = n;
return this;
};
function $getMaxListeners(that) {
if (that._maxListeners === undefined)
return EventEmitter.defaultMaxListeners;
return that._maxListeners;
}
EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
return $getMaxListeners(this);
};
// These standalone emit* functions are used to optimize calling of event
// handlers for fast cases because emit() itself often has a variable number of
// arguments and can be deoptimized because of that. These functions always have
// the same number of arguments and thus do not get deoptimized, so the code
// inside them can execute faster.
function emitNone(handler, isFn, self) {
if (isFn)
handler.call(self);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self);
}
}
function emitOne(handler, isFn, self, arg1) {
if (isFn)
handler.call(self, arg1);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1);
}
}
function emitTwo(handler, isFn, self, arg1, arg2) {
if (isFn)
handler.call(self, arg1, arg2);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1, arg2);
}
}
function emitThree(handler, isFn, self, arg1, arg2, arg3) {
if (isFn)
handler.call(self, arg1, arg2, arg3);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1, arg2, arg3);
}
}
function emitMany(handler, isFn, self, args) {
if (isFn)
handler.apply(self, args);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].apply(self, args);
}
}
EventEmitter.prototype.emit = function emit(type) {
var er, handler, len, args, i, events;
var doError = (type === 'error');
events = this._events;
if (events)
doError = (doError && events.error == null);
else if (!doError)
return false;
// If there is no 'error' event listener then throw.
if (doError) {
if (arguments.length > 1)
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('Unhandled "error" event. (' + er + ')');
err.context = er;
throw err;
}
return false;
}
handler = events[type];
if (!handler)
return false;
var isFn = typeof handler === 'function';
len = arguments.length;
switch (len) {
// fast cases
case 1:
emitNone(handler, isFn, this);
break;
case 2:
emitOne(handler, isFn, this, arguments[1]);
break;
case 3:
emitTwo(handler, isFn, this, arguments[1], arguments[2]);
break;
case 4:
emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
break;
// slower
default:
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
emitMany(handler, isFn, this, args);
}
return true;
};
function _addListener(target, type, listener, prepend) {
var m;
var events;
var existing;
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
events = target._events;
if (!events) {
events = target._events = objectCreate(null);
target._eventsCount = 0;
} else {
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (events.newListener) {
target.emit('newListener', type,
listener.listener ? listener.listener : listener);
// Re-assign `events` because a newListener handler could have caused the
// this._events to be assigned to a new object
events = target._events;
}
existing = events[type];
}
if (!existing) {
// Optimize the case of one listener. Don't need the extra array object.
existing = events[type] = listener;
++target._eventsCount;
} else {
if (typeof existing === 'function') {
// Adding the second element, need to change to array.
existing = events[type] =
prepend ? [listener, existing] : [existing, listener];
} else {
// If we've already got an array, just append.
if (prepend) {
existing.unshift(listener);
} else {
existing.push(listener);
}
}
// Check for listener leak
if (!existing.warned) {
m = $getMaxListeners(target);
if (m && m > 0 && existing.length > m) {
existing.warned = true;
var w = new Error('Possible EventEmitter memory leak detected. ' +
existing.length + ' "' + String(type) + '" listeners ' +
'added. Use emitter.setMaxListeners() to ' +
'increase limit.');
w.name = 'MaxListenersExceededWarning';
w.emitter = target;
w.type = type;
w.count = existing.length;
if (typeof console === 'object' && console.warn) {
console.warn('%s: %s', w.name, w.message);
}
}
}
}
return target;
}
EventEmitter.prototype.addListener = function addListener(type, listener) {
return _addListener(this, type, listener, false);
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.prependListener =
function prependListener(type, listener) {
return _addListener(this, type, listener, true);
};
function onceWrapper() {
if (!this.fired) {
this.target.removeListener(this.type, this.wrapFn);
this.fired = true;
switch (arguments.length) {
case 0:
return this.listener.call(this.target);
case 1:
return this.listener.call(this.target, arguments[0]);
case 2:
return this.listener.call(this.target, arguments[0], arguments[1]);
case 3:
return this.listener.call(this.target, arguments[0], arguments[1],
arguments[2]);
default:
var args = new Array(arguments.length);
for (var i = 0; i < args.length; ++i)
args[i] = arguments[i];
this.listener.apply(this.target, args);
}
}
}
function _onceWrap(target, type, listener) {
var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
var wrapped = bind.call(onceWrapper, state);
wrapped.listener = listener;
state.wrapFn = wrapped;
return wrapped;
}
EventEmitter.prototype.once = function once(type, listener) {
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
this.on(type, _onceWrap(this, type, listener));
return this;
};
EventEmitter.prototype.prependOnceListener =
function prependOnceListener(type, listener) {
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
this.prependListener(type, _onceWrap(this, type, listener));
return this;
};
// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
function removeListener(type, listener) {
var list, events, position, i, originalListener;
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
events = this._events;
if (!events)
return this;
list = events[type];
if (!list)
return this;
if (list === listener || list.listener === listener) {
if (--this._eventsCount === 0)
this._events = objectCreate(null);
else {
delete events[type];
if (events.removeListener)
this.emit('removeListener', type, list.listener || listener);
}
} else if (typeof list !== 'function') {
position = -1;
for (i = list.length - 1; i >= 0; i--) {
if (list[i] === listener || list[i].listener === listener) {
originalListener = list[i].listener;
position = i;
break;
}
}
if (position < 0)
return this;
if (position === 0)
list.shift();
else
spliceOne(list, position);
if (list.length === 1)
events[type] = list[0];
if (events.removeListener)
this.emit('removeListener', type, originalListener || listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners =
function removeAllListeners(type) {
var listeners, events, i;
events = this._events;
if (!events)
return this;
// not listening for removeListener, no need to emit
if (!events.removeListener) {
if (arguments.length === 0) {
this._events = objectCreate(null);
this._eventsCount = 0;
} else if (events[type]) {
if (--this._eventsCount === 0)
this._events = objectCreate(null);
else
delete events[type];
}
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
var keys = objectKeys(events);
var key;
for (i = 0; i < keys.length; ++i) {
key = keys[i];
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = objectCreate(null);
this._eventsCount = 0;
return this;
}
listeners = events[type];
if (typeof listeners === 'function') {
this.removeListener(type, listeners);
} else if (listeners) {
// LIFO order
for (i = listeners.length - 1; i >= 0; i--) {
this.removeListener(type, listeners[i]);
}
}
return this;
};
function _listeners(target, type, unwrap) {
var events = target._events;
if (!events)
return [];
var evlistener = events[type];
if (!evlistener)
return [];
if (typeof evlistener === 'function')
return unwrap ? [evlistener.listener || evlistener] : [evlistener];
return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}
EventEmitter.prototype.listeners = function listeners(type) {
return _listeners(this, type, true);
};
EventEmitter.prototype.rawListeners = function rawListeners(type) {
return _listeners(this, type, false);
};
EventEmitter.listenerCount = function(emitter, type) {
if (typeof emitter.listenerCount === 'function') {
return emitter.listenerCount(type);
} else {
return listenerCount.call(emitter, type);
}
};
EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
var events = this._events;
if (events) {
var evlistener = events[type];
if (typeof evlistener === 'function') {
return 1;
} else if (evlistener) {
return evlistener.length;
}
}
return 0;
}
EventEmitter.prototype.eventNames = function eventNames() {
return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
};
// About 1.5x faster than the two-arg version of Array#splice().
function spliceOne(list, index) {
for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
list[i] = list[k];
list.pop();
}
function arrayClone(arr, n) {
var copy = new Array(n);
for (var i = 0; i < n; ++i)
copy[i] = arr[i];
return copy;
}
function unwrapListeners(arr) {
var ret = new Array(arr.length);
for (var i = 0; i < ret.length; ++i) {
ret[i] = arr[i].listener || arr[i];
}
return ret;
}
function objectCreatePolyfill(proto) {
var F = function() {};
F.prototype = proto;
return new F;
}
function objectKeysPolyfill(obj) {
var keys = [];
for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {
keys.push(k);
}
return k;
}
function functionBindPolyfill(context) {
var fn = this;
return function () {
return fn.apply(context, arguments);
};
}
},{}],28:[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
}
},{}],29:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
if (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) {
if (superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
}
},{}],30:[function(require,module,exports){
/*!
* Determine if an object is a Buffer
*
* @author Feross Aboukhadijeh <https://feross.org>
* @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))
}
},{}],31:[function(require,module,exports){
var toString = {}.toString;
module.exports = Array.isArray || function (arr) {
return toString.call(arr) == '[object Array]';
};
},{}],32:[function(require,module,exports){
(function (Buffer){
/* Protocol - protocol constants */
const 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: 'auth'
}
/* Mnemonic => Command code */
protocol.codes = {}
for (const k in protocol.types) {
const 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.VARBYTEINT_MASK = 0x7F
protocol.VARBYTEINT_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])
/* Properties */
protocol.properties = {
sessionExpiryInterval: 17,
willDelayInterval: 24,
receiveMaximum: 33,
maximumPacketSize: 39,
topicAliasMaximum: 34,
requestResponseInformation: 25,
requestProblemInformation: 23,
userProperties: 38,
authenticationMethod: 21,
authenticationData: 22,
payloadFormatIndicator: 1,
messageExpiryInterval: 2,
contentType: 3,
responseTopic: 8,
correlationData: 9,
maximumQoS: 36,
retainAvailable: 37,
assignedClientIdentifier: 18,
reasonString: 31,
wildcardSubscriptionAvailable: 40,
subscriptionIdentifiersAvailable: 41,
sharedSubscriptionAvailable: 42,
serverKeepAlive: 19,
responseInformation: 26,
serverReference: 28,
topicAlias: 35,
subscriptionIdentifier: 11
}
protocol.propertiesCodes = {}
for (const prop in protocol.properties) {
const id = protocol.properties[prop]
protocol.propertiesCodes[id] = prop
}
protocol.propertiesTypes = {
sessionExpiryInterval: 'int32',
willDelayInterval: 'int32',
receiveMaximum: 'int16',
maximumPacketSize: 'int32',
topicAliasMaximum: 'int16',
requestResponseInformation: 'byte',
requestProblemInformation: 'byte',
userProperties: 'pair',
authenticationMethod: 'string',
authenticationData: 'binary',
payloadFormatIndicator: 'byte',
messageExpiryInterval: 'int32',
contentType: 'string',
responseTopic: 'string',
correlationData: 'binary',
maximumQoS: 'int8',
retainAvailable: 'byte',
assignedClientIdentifier: 'string',
reasonString: 'string',
wildcardSubscriptionAvailable: 'byte',
subscriptionIdentifiersAvailable: 'byte',
sharedSubscriptionAvailable: 'byte',
serverKeepAlive: 'int16',
responseInformation: 'string',
serverReference: 'string',
topicAlias: 'int16',
subscriptionIdentifier: 'var'
}
function genHeader (type) {
return [0, 1, 2].map(qos => {
return [0, 1].map(dup => {
return [0, 1].map(retain => {
const buf = Buffer.alloc(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')
protocol.SUBSCRIBE_OPTIONS_QOS_MASK = 0x03
protocol.SUBSCRIBE_OPTIONS_NL_MASK = 0x01
protocol.SUBSCRIBE_OPTIONS_NL_SHIFT = 2
protocol.SUBSCRIBE_OPTIONS_RAP_MASK = 0x01
protocol.SUBSCRIBE_OPTIONS_RAP_SHIFT = 3
protocol.SUBSCRIBE_OPTIONS_RH_MASK = 0x03
protocol.SUBSCRIBE_OPTIONS_RH_SHIFT = 4
protocol.SUBSCRIBE_OPTIONS_RH = [0x00, 0x10, 0x20]
protocol.SUBSCRIBE_OPTIONS_NL = 0x04
protocol.SUBSCRIBE_OPTIONS_RAP = 0x08
protocol.SUBSCRIBE_OPTIONS_QOS = [0x00, 0x01, 0x02]
/* 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])
protocol.VERSION5 = Buffer.from([5])
/* QoS */
protocol.QOS = [0, 1, 2].map(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])
}
}).call(this,require("buffer").Buffer)
},{"buffer":12}],33:[function(require,module,exports){
(function (Buffer){
const writeToStream = require('./writeToStream')
const EventEmitter = require('events')
function generate (packet, opts) {
const stream = new Accumulator()
writeToStream(packet, stream, opts)
return stream.concat()
}
class Accumulator extends EventEmitter {
constructor () {
super()
this._array = new Array(20)
this._i = 0
}
write (chunk) {
this._array[this._i++] = chunk
return true
}
concat () {
let length = 0
const lengths = new Array(this._array.length)
const list = this._array
let pos = 0
let i
for (i = 0; i < list.length && list[i] !== undefined; i++) {
if (typeof list[i] !== 'string') lengths[i] = list[i].length
else lengths[i] = Buffer.byteLength(list[i])
length += lengths[i]
}
const result = Buffer.allocUnsafe(length)
for (i = 0; i < list.length && list[i] !== undefined; 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
}).call(this,require("buffer").Buffer)
},{"./writeToStream":40,"buffer":12,"events":27}],34:[function(require,module,exports){
exports.parser = require('./parser').parser
exports.generate = require('./generate')
exports.writeToStream = require('./writeToStream')
},{"./generate":33,"./parser":39,"./writeToStream":40}],35:[function(require,module,exports){
'use strict'
const { Buffer } = require('buffer')
const symbol = Symbol.for('BufferList')
function BufferList (buf) {
if (!(this instanceof BufferList)) {
return new BufferList(buf)
}
BufferList._init.call(this, buf)
}
BufferList._init = function _init (buf) {
Object.defineProperty(this, symbol, { value: true })
this._bufs = []
this.length = 0
if (buf) {
this.append(buf)
}
}
BufferList.prototype._new = function _new (buf) {
return new BufferList(buf)
}
BufferList.prototype._offset = function _offset (offset) {
if (offset === 0) {
return [0, 0]
}
let tot = 0
for (let i = 0; i < this._bufs.length; i++) {
const _t = tot + this._bufs[i].length
if (offset < _t || i === this._bufs.length - 1) {
return [i, offset - tot]
}
tot = _t
}
}
BufferList.prototype._reverseOffset = function (blOffset) {
const bufferId = blOffset[0]
let offset = blOffset[1]
for (let i = 0; i < bufferId; i++) {
offset += this._bufs[i].length
}
return offset
}
BufferList.prototype.get = function get (index) {
if (index > this.length || index < 0) {
return undefined
}
const offset = this._offset(index)
return this._bufs[offset[0]][offset[1]]
}
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 || Buffer.alloc(0)
}
if (srcEnd <= 0) {
return dst || Buffer.alloc(0)
}
const copy = !!dst
const off = this._offset(srcStart)
const len = srcEnd - srcStart
let bytes = len
let bufoff = (copy && dstStart) || 0
let start = off[1]
// 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 (let 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 = Buffer.allocUnsafe(len)
}
for (let i = off[0]; i < this._bufs.length; i++) {
const l = this._bufs[i].length - start
if (bytes > l) {
this._bufs[i].copy(dst, bufoff, start)
bufoff += l
} else {
this._bufs[i].copy(dst, bufoff, start, start + bytes)
bufoff += l
break
}
bytes -= l
if (start) {
start = 0
}
}
// safeguard so that we don't return uninitialized memory
if (dst.length > bufoff) return dst.slice(0, bufoff)
return dst
}
BufferList.prototype.shallowSlice = function shallowSlice (start, end) {
start = start || 0
end = typeof end !== 'number' ? this.length : end
if (start < 0) {
start += this.length
}
if (end < 0) {
end += this.length
}
if (start === end) {
return this._new()
}
const startOffset = this._offset(start)
const endOffset = this._offset(end)
const 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 this._new(buffers)
}
BufferList.prototype.toString = function toString (encoding, start, end) {
return this.slice(start, end).toString(encoding)
}
BufferList.prototype.consume = function consume (bytes) {
// first, normalize the argument, in accordance with how Buffer does it
bytes = Math.trunc(bytes)
// do nothing if not a positive number
if (Number.isNaN(bytes) || bytes <= 0) return this
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 () {
const copy = this._new()
for (let i = 0; i < this._bufs.length; i++) {
copy.append(this._bufs[i])
}
return copy
}
BufferList.prototype.append = function append (buf) {
if (buf == null) {
return this
}
if (buf.buffer) {
// append a view of the underlying ArrayBuffer
this._appendBuffer(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength))
} else if (Array.isArray(buf)) {
for (let i = 0; i < buf.length; i++) {
this.append(buf[i])
}
} else if (this._isBufferList(buf)) {
// unwrap argument into individual BufferLists
for (let i = 0; i < buf._bufs.length; i++) {
this.append(buf._bufs[i])
}
} else {
// coerce number arguments to strings, since Buffer(number) does
// uninitialized memory allocation
if (typeof buf === 'number') {
buf = buf.toString()
}
this._appendBuffer(Buffer.from(buf))
}
return this
}
BufferList.prototype._appendBuffer = function appendBuffer (buf) {
this._bufs.push(buf)
this.length += buf.length
}
BufferList.prototype.indexOf = function (search, offset, encoding) {
if (encoding === undefined && typeof offset === 'string') {
encoding = offset
offset = undefined
}
if (typeof search === 'function' || Array.isArray(search)) {
throw new TypeError('The "value" argument must be one of type string, Buffer, BufferList, or Uint8Array.')
} else if (typeof search === 'number') {
search = Buffer.from([search])
} else if (typeof search === 'string') {
search = Buffer.from(search, encoding)
} else if (this._isBufferList(search)) {
search = search.slice()
} else if (Array.isArray(search.buffer)) {
search = Buffer.from(search.buffer, search.byteOffset, search.byteLength)
} else if (!Buffer.isBuffer(search)) {
search = Buffer.from(search)
}
offset = Number(offset || 0)
if (isNaN(offset)) {
offset = 0
}
if (offset < 0) {
offset = this.length + offset
}
if (offset < 0) {
offset = 0
}
if (search.length === 0) {
return offset > this.length ? this.length : offset
}
const blOffset = this._offset(offset)
let blIndex = blOffset[0] // index of which internal buffer we're working on
let buffOffset = blOffset[1] // offset of the internal buffer we're working on
// scan over each buffer
for (; blIndex < this._bufs.length; blIndex++) {
const buff = this._bufs[blIndex]
while (buffOffset < buff.length) {
const availableWindow = buff.length - buffOffset
if (availableWindow >= search.length) {
const nativeSearchResult = buff.indexOf(search, buffOffset)
if (nativeSearchResult !== -1) {
return this._reverseOffset([blIndex, nativeSearchResult])
}
buffOffset = buff.length - search.length + 1 // end of native search window
} else {
const revOffset = this._reverseOffset([blIndex, buffOffset])
if (this._match(revOffset, search)) {
return revOffset
}
buffOffset++
}
}
buffOffset = 0
}
return -1
}
BufferList.prototype._match = function (offset, search) {
if (this.length - offset < search.length) {
return false
}
for (let searchOffset = 0; searchOffset < search.length; searchOffset++) {
if (this.get(offset + searchOffset) !== search[searchOffset]) {
return false
}
}
return true
}
;(function () {
const 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,
readIntBE: null,
readIntLE: null,
readUIntBE: null,
readUIntLE: null
}
for (const m in methods) {
(function (m) {
if (methods[m] === null) {
BufferList.prototype[m] = function (offset, byteLength) {
return this.slice(offset, offset + byteLength)[m](0, byteLength)
}
} else {
BufferList.prototype[m] = function (offset) {
return this.slice(offset, offset + methods[m])[m](0)
}
}
}(m))
}
}())
// Used internally by the class and also as an indicator of this object being
// a `BufferList`. It's not possible to use `instanceof BufferList` in a browser
// environment because there could be multiple different copies of the
// BufferList class and some `BufferList`s might be `BufferList`s.
BufferList.prototype._isBufferList = function _isBufferList (b) {
return b instanceof BufferList || BufferList.isBufferList(b)
}
BufferList.isBufferList = function isBufferList (b) {
return b != null && b[symbol]
}
module.exports = BufferList
},{"buffer":12}],36:[function(require,module,exports){
'use strict'
const DuplexStream = require('readable-stream').Duplex
const inherits = require('inherits')
const BufferList = require('./BufferList')
function BufferListStream (callback) {
if (!(this instanceof BufferListStream)) {
return new BufferListStream(callback)
}
if (typeof callback === 'function') {
this._callback = callback
const 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)
})
callback = null
}
BufferList._init.call(this, callback)
DuplexStream.call(this)
}
inherits(BufferListStream, DuplexStream)
Object.assign(BufferListStream.prototype, BufferList.prototype)
BufferListStream.prototype._new = function _new (callback) {
return new BufferListStream(callback)
}
BufferListStream.prototype._write = function _write (buf, encoding, callback) {
this._appendBuffer(buf)
if (typeof callback === 'function') {
callback()
}
}
BufferListStream.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)
}
BufferListStream.prototype.end = function end (chunk) {
DuplexStream.prototype.end.call(this, chunk)
if (this._callback) {
this._callback(null, this.slice())
this._callback = null
}
}
BufferListStream.prototype._destroy = function _destroy (err, cb) {
this._bufs.length = 0
this.length = 0
cb(err)
}
BufferListStream.prototype._isBufferList = function _isBufferList (b) {
return b instanceof BufferListStream || b instanceof BufferList || BufferListStream.isBufferList(b)
}
BufferListStream.isBufferList = BufferList.isBufferList
module.exports = BufferListStream
module.exports.BufferListStream = BufferListStream
module.exports.BufferList = BufferList
},{"./BufferList":35,"inherits":29,"readable-stream":63}],37:[function(require,module,exports){
(function (Buffer){
const max = 65536
const cache = {}
// in node 6 Buffer.subarray returns a Uint8Array instead of a Buffer
// later versions return a Buffer
// alternative is Buffer.slice but that creates a new buffer
// creating new buffers takes time
// SubOk is only false on node < 8
const SubOk = Buffer.isBuffer(Buffer.from([1, 2]).subarray(0, 1))
function generateBuffer (i) {
const buffer = Buffer.allocUnsafe(2)
buffer.writeUInt8(i >> 8, 0)
buffer.writeUInt8(i & 0x00FF, 0 + 1)
return buffer
}
function generateCache () {
for (let i = 0; i < max; i++) {
cache[i] = generateBuffer(i)
}
}
function genBufVariableByteInt (num) {
const maxLength = 4 // max 4 bytes
let digit = 0
let pos = 0
const buffer = Buffer.allocUnsafe(maxLength)
do {
digit = num % 128 | 0
num = num / 128 | 0
if (num > 0) digit = digit | 0x80
buffer.writeUInt8(digit, pos++)
} while (num > 0 && pos < maxLength)
if (num > 0) {
pos = 0
}
return SubOk ? buffer.subarray(0, pos) : buffer.slice(0, pos)
}
function generate4ByteBuffer (num) {
const buffer = Buffer.allocUnsafe(4)
buffer.writeUInt32BE(num, 0)
return buffer
}
module.exports = {
cache,
generateCache,
generateNumber: generateBuffer,
genBufVariableByteInt,
generate4ByteBuffer
}
}).call(this,require("buffer").Buffer)
},{"buffer":12}],38:[function(require,module,exports){
class Packet {
constructor () {
this.cmd = null
this.retain = false
this.qos = 0
this.dup = false
this.length = -1
this.topic = null
this.payload = null
}
}
module.exports = Packet
},{}],39:[function(require,module,exports){
const bl = require('bl')
const EventEmitter = require('events')
const Packet = require('./packet')
const constants = require('./constants')
const debug = require('debug')('mqtt-packet:parser')
class Parser extends EventEmitter {
constructor () {
super()
this.parser = this.constructor.parser
}
static parser (opt) {
if (!(this instanceof Parser)) return (new Parser()).parser(opt)
this.settings = opt || {}
this._states = [
'_parseHeader',
'_parseLength',
'_parsePayload',
'_newPacket'
]
this._resetState()
return this
}
_resetState () {
debug('_resetState: resetting packet, error, _list, and _stateCounter')
this.packet = new Packet()
this.error = null
this._list = bl()
this._stateCounter = 0
}
parse (buf) {
if (this.error) this._resetState()
this._list.append(buf)
debug('parse: current state: %s', this._states[this._stateCounter])
while ((this.packet.length !== -1 || this._list.length > 0) &&
this[this._states[this._stateCounter]]() &&
!this.error) {
this._stateCounter++
debug('parse: state complete. _stateCounter is now: %d', this._stateCounter)
debug('parse: packet.length: %d, buffer list length: %d', this.packet.length, this._list.length)
if (this._stateCounter >= this._states.length) this._stateCounter = 0
}
debug('parse: exited while loop. packet: %d, buffer list length: %d', this.packet.length, this._list.length)
return this._list.length
}
_parseHeader () {
// There is at least one byte in the buffer
const 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
debug('_parseHeader: packet: %o', this.packet)
this._list.consume(1)
return true
}
_parseLength () {
// There is at least one byte in the list
const result = this._parseVarByteNum(true)
if (result) {
this.packet.length = result.value
this._list.consume(result.bytes)
} else {
this._emitError(new Error('Invalid length'))
}
debug('_parseLength %d', result.value)
return !!result
}
_parsePayload () {
debug('_parsePayload: payload %O', this._list)
let 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._parseConfirmation()
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':
// These are empty, nothing to do
break
case 'disconnect':
this._parseDisconnect()
break
case 'auth':
this._parseAuth()
break
default:
this._emitError(new Error('Not supported'))
}
result = true
}
debug('_parsePayload complete result: %s', result)
return result
}
_parseConnect () {
debug('_parseConnect')
let topic // Will topic
let payload // Will payload
let password // Password
let username // Username
const flags = {}
const packet = this.packet
// Parse protocolId
const 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 && packet.protocolVersion !== 5) {
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 properties
if (packet.protocolVersion === 5) {
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
}
// Parse clientId
const clientId = this._parseString()
if (clientId === null) return this._emitError(new Error('Packet too short'))
packet.clientId = clientId
debug('_parseConnect: packet.clientId: %s', packet.clientId)
if (flags.will) {
if (packet.protocolVersion === 5) {
const willProperties = this._parseProperties()
if (Object.getOwnPropertyNames(willProperties).length) {
packet.will.properties = willProperties
}
}
// Parse will topic
topic = this._parseString()
if (topic === null) return this._emitError(new Error('Cannot parse will topic'))
packet.will.topic = topic
debug('_parseConnect: packet.will.topic: %s', packet.will.topic)
// Parse will payload
payload = this._parseBuffer()
if (payload === null) return this._emitError(new Error('Cannot parse will payload'))
packet.will.payload = payload
debug('_parseConnect: packet.will.paylaod: %s', packet.will.payload)
}
// Parse username
if (flags.username) {
username = this._parseString()
if (username === null) return this._emitError(new Error('Cannot parse username'))
packet.username = username
debug('_parseConnect: packet.username: %s', packet.username)
}
// Parse password
if (flags.password) {
password = this._parseBuffer()
if (password === null) return this._emitError(new Error('Cannot parse password'))
packet.password = password
}
// need for right parse auth packet and self set up
this.settings = packet
debug('_parseConnect: complete')
return packet
}
_parseConnack () {
debug('_parseConnack')
const packet = this.packet
if (this._list.length < 2) return null
packet.sessionPresent = !!(this._list.readUInt8(this._pos++) & constants.SESSIONPRESENT_MASK)
if (this.settings.protocolVersion === 5) {
packet.reasonCode = this._list.readUInt8(this._pos++)
} else {
packet.returnCode = this._list.readUInt8(this._pos++)
}
if (packet.returnCode === -1 || packet.reasonCode === -1) return this._emitError(new Error('Cannot parse return code'))
// mqtt 5 properties
if (this.settings.protocolVersion === 5) {
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
}
debug('_parseConnack: complete')
}
_parsePublish () {
debug('_parsePublish')
const 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 }
// Properties mqtt 5
if (this.settings.protocolVersion === 5) {
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
}
packet.payload = this._list.slice(this._pos, packet.length)
debug('_parsePublish: payload from buffer list: %o', packet.payload)
}
_parseSubscribe () {
debug('_parseSubscribe')
const packet = this.packet
let topic
let options
let qos
let rh
let rap
let nl
let subscription
if (packet.qos !== 1) {
return this._emitError(new Error('Wrong subscribe header'))
}
packet.subscriptions = []
if (!this._parseMessageId()) { return }
// Properties mqtt 5
if (this.settings.protocolVersion === 5) {
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
}
while (this._pos < packet.length) {
// Parse topic
topic = this._parseString()
if (topic === null) return this._emitError(new Error('Cannot parse topic'))
if (this._pos >= packet.length) return this._emitError(new Error('Malformed Subscribe Payload'))
options = this._parseByte()
qos = options & constants.SUBSCRIBE_OPTIONS_QOS_MASK
nl = ((options >> constants.SUBSCRIBE_OPTIONS_NL_SHIFT) & constants.SUBSCRIBE_OPTIONS_NL_MASK) !== 0
rap = ((options >> constants.SUBSCRIBE_OPTIONS_RAP_SHIFT) & constants.SUBSCRIBE_OPTIONS_RAP_MASK) !== 0
rh = (options >> constants.SUBSCRIBE_OPTIONS_RH_SHIFT) & constants.SUBSCRIBE_OPTIONS_RH_MASK
subscription = { topic, qos }
// mqtt 5 options
if (this.settings.protocolVersion === 5) {
subscription.nl = nl
subscription.rap = rap
subscription.rh = rh
}
// Push pair to subscriptions
debug('_parseSubscribe: push subscription `%s` to subscription', subscription)
packet.subscriptions.push(subscription)
}
}
_parseSuback () {
debug('_parseSuback')
const packet = this.packet
this.packet.granted = []
if (!this._parseMessageId()) { return }
// Properties mqtt 5
if (this.settings.protocolVersion === 5) {
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
}
// Parse granted QoSes
while (this._pos < this.packet.length) {
this.packet.granted.push(this._list.readUInt8(this._pos++))
}
}
_parseUnsubscribe () {
debug('_parseUnsubscribe')
const packet = this.packet
packet.unsubscriptions = []
// Parse messageId
if (!this._parseMessageId()) { return }
// Properties mqtt 5
if (this.settings.protocolVersion === 5) {
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
}
while (this._pos < packet.length) {
// Parse topic
const topic = this._parseString()
if (topic === null) return this._emitError(new Error('Cannot parse topic'))
// Push topic to unsubscriptions
debug('_parseUnsubscribe: push topic `%s` to unsubscriptions', topic)
packet.unsubscriptions.push(topic)
}
}
_parseUnsuback () {
debug('_parseUnsuback')
const packet = this.packet
if (!this._parseMessageId()) return this._emitError(new Error('Cannot parse messageId'))
// Properties mqtt 5
if (this.settings.protocolVersion === 5) {
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
// Parse granted QoSes
packet.granted = []
while (this._pos < this.packet.length) {
this.packet.granted.push(this._list.readUInt8(this._pos++))
}
}
}
// parse packets like puback, pubrec, pubrel, pubcomp
_parseConfirmation () {
debug('_parseConfirmation: packet.cmd: `%s`', this.packet.cmd)
const packet = this.packet
this._parseMessageId()
if (this.settings.protocolVersion === 5) {
if (packet.length > 2) {
// response code
packet.reasonCode = this._parseByte()
debug('_parseConfirmation: packet.reasonCode `%d`', packet.reasonCode)
}
if (packet.length > 3) {
// properies mqtt 5
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
}
}
return true
}
// parse disconnect packet
_parseDisconnect () {
const packet = this.packet
debug('_parseDisconnect')
if (this.settings.protocolVersion === 5) {
// response code
packet.reasonCode = this._parseByte()
// properies mqtt 5
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
}
debug('_parseDisconnect result: true')
return true
}
// parse auth packet
_parseAuth () {
debug('_parseAuth')
const packet = this.packet
if (this.settings.protocolVersion !== 5) {
return this._emitError(new Error('Not supported auth packet for this version MQTT'))
}
// response code
packet.reasonCode = this._parseByte()
// properies mqtt 5
const properties = this._parseProperties()
if (Object.getOwnPropertyNames(properties).length) {
packet.properties = properties
}
debug('_parseAuth: result: true')
return true
}
_parseMessageId () {
const packet = this.packet
packet.messageId = this._parseNum()
if (packet.messageId === null) {
this._emitError(new Error('Cannot parse messageId'))
return false
}
debug('_parseMessageId: packet.messageId %d', packet.messageId)
return true
}
_parseString (maybeBuffer) {
const length = this._parseNum()
const end = length + this._pos
if (length === -1 || end > this._list.length || end > this.packet.length) return null
const result = this._list.toString('utf8', this._pos, end)
this._pos += length
debug('_parseString: result: %s', result)
return result
}
_parseStringPair () {
debug('_parseStringPair')
return {
name: this._parseString(),
value: this._parseString()
}
}
_parseBuffer () {
const length = this._parseNum()
const end = length + this._pos
if (length === -1 || end > this._list.length || end > this.packet.length) return null
const result = this._list.slice(this._pos, end)
this._pos += length
debug('_parseBuffer: result: %o', result)
return result
}
_parseNum () {
if (this._list.length - this._pos < 2) return -1
const result = this._list.readUInt16BE(this._pos)
this._pos += 2
debug('_parseNum: result: %s', result)
return result
}
_parse4ByteNum () {
if (this._list.length - this._pos < 4) return -1
const result = this._list.readUInt32BE(this._pos)
this._pos += 4
debug('_parse4ByteNum: result: %s', result)
return result
}
_parseVarByteNum (fullInfoFlag) {
debug('_parseVarByteNum')
let bytes = 0
let mul = 1
let value = 0
let result = false
let current
const padding = this._pos ? this._pos : 0
while (bytes < 5) {
current = this._list.readUInt8(padding + bytes++)
value += mul * (current & constants.VARBYTEINT_MASK)
mul *= 0x80
if ((current & constants.VARBYTEINT_FIN_MASK) === 0) {
result = true
break
}
if (this._list.length <= bytes) {
break
}
}
if (padding) {
this._pos += bytes
}
result = result
? fullInfoFlag ? {
bytes,
value
} : value
: false
debug('_parseVarByteNum: result: %o', result)
return result
}
_parseByte () {
const result = this._list.readUInt8(this._pos)
this._pos++
debug('_parseByte: result: %o', result)
return result
}
_parseByType (type) {
debug('_parseByType: type: %s', type)
switch (type) {
case 'byte': {
return this._parseByte() !== 0
}
case 'int8': {
return this._parseByte()
}
case 'int16': {
return this._parseNum()
}
case 'int32': {
return this._parse4ByteNum()
}
case 'var': {
return this._parseVarByteNum()
}
case 'string': {
return this._parseString()
}
case 'pair': {
return this._parseStringPair()
}
case 'binary': {
return this._parseBuffer()
}
}
}
_parseProperties () {
debug('_parseProperties')
const length = this._parseVarByteNum()
const start = this._pos
const end = start + length
const result = {}
while (this._pos < end) {
const type = this._parseByte()
const name = constants.propertiesCodes[type]
if (!name) {
this._emitError(new Error('Unknown property'))
return false
}
// user properties process
if (name === 'userProperties') {
if (!result[name]) {
result[name] = Object.create(null)
}
const currentUserProperty = this._parseByType(constants.propertiesTypes[name])
if (result[name][currentUserProperty.name]) {
if (Array.isArray(result[name][currentUserProperty.name])) {
result[name][currentUserProperty.name].push(currentUserProperty.value)
} else {
const currentValue = result[name][currentUserProperty.name]
result[name][currentUserProperty.name] = [currentValue]
result[name][currentUserProperty.name].push(currentUserProperty.value)
}
} else {
result[name][currentUserProperty.name] = currentUserProperty.value
}
continue
}
if (result[name]) {
if (Array.isArray(result[name])) {
result[name].push(this._parseByType(constants.propertiesTypes[name]))
} else {
result[name] = [result[name]]
result[name].push(this._parseByType(constants.propertiesTypes[name]))
}
} else {
result[name] = this._parseByType(constants.propertiesTypes[name])
}
}
return result
}
_newPacket () {
debug('_newPacket')
if (this.packet) {
this._list.consume(this.packet.length)
debug('_newPacket: parser emit packet: packet.cmd: %s, packet.payload: %s, packet.length: %d', this.packet.cmd, this.packet.payload, this.packet.length)
this.emit('packet', this.packet)
}
debug('_newPacket: new packet')
this.packet = new Packet()
this._pos = 0
return true
}
_emitError (err) {
debug('_emitError')
this.error = err
this.emit('error', err)
}
}
module.exports = Parser
},{"./constants":32,"./packet":38,"bl":36,"debug":14,"events":27}],40:[function(require,module,exports){
(function (Buffer){
const protocol = require('./constants')
const empty = Buffer.allocUnsafe(0)
const zeroBuf = Buffer.from([0])
const numbers = require('./numbers')
const nextTick = require('process-nextick-args').nextTick
const debug = require('debug')('mqtt-packet:writeToStream')
const numCache = numbers.cache
const generateNumber = numbers.generateNumber
const generateCache = numbers.generateCache
const genBufVariableByteInt = numbers.genBufVariableByteInt
const generate4ByteBuffer = numbers.generate4ByteBuffer
let writeNumber = writeNumberCached
let toGenerate = true
function generate (packet, stream, opts) {
debug('generate called')
if (stream.cork) {
stream.cork()
nextTick(uncork, stream)
}
if (toGenerate) {
toGenerate = false
generateCache()
}
debug('generate: packet.cmd: %s', packet.cmd)
switch (packet.cmd) {
case 'connect':
return connect(packet, stream, opts)
case 'connack':
return connack(packet, stream, opts)
case 'publish':
return publish(packet, stream, opts)
case 'puback':
case 'pubrec':
case 'pubrel':
case 'pubcomp':
return confirmation(packet, stream, opts)
case 'subscribe':
return subscribe(packet, stream, opts)
case 'suback':
return suback(packet, stream, opts)
case 'unsubscribe':
return unsubscribe(packet, stream, opts)
case 'unsuback':
return unsuback(packet, stream, opts)
case 'pingreq':
case 'pingresp':
return emptyPacket(packet, stream, opts)
case 'disconnect':
return disconnect(packet, stream, opts)
case 'auth':
return auth(packet, stream, opts)
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 () {
return writeNumber === writeNumberCached
},
set (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 (packet, stream, opts) {
const settings = packet || {}
const protocolId = settings.protocolId || 'MQTT'
const protocolVersion = settings.protocolVersion || 4
const will = settings.will
let clean = settings.clean
const keepalive = settings.keepalive || 0
const clientId = settings.clientId || ''
const username = settings.username
const password = settings.password
/* mqtt5 new oprions */
const properties = settings.properties
if (clean === undefined) clean = true
let 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 or 5
if (protocolVersion !== 3 && protocolVersion !== 4 && protocolVersion !== 5) {
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
// Properties
if (protocolVersion === 5) {
var propertiesData = getProperties(stream, properties)
if (!propertiesData) { return false }
length += propertiesData.length
}
// 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
length += 2 // payload length
if (will.payload) {
if (will.payload.length >= 0) {
if (typeof will.payload === 'string') {
length += Buffer.byteLength(will.payload)
} else {
length += will.payload.length
}
} else {
stream.emit('error', new Error('Invalid will payload'))
return false
}
}
// will properties
var willProperties = {}
if (protocolVersion === 5) {
willProperties = getProperties(stream, will.properties)
if (!willProperties) { return false }
length += willProperties.length
}
}
// Username
let providedUsername = false
if (username != null) {
if (isStringOrBuffer(username)) {
providedUsername = true
length += Buffer.byteLength(username) + 2
} else {
stream.emit('error', new Error('Invalid username'))
return false
}
}
// Password
if (password != null) {
if (!providedUsername) {
stream.emit('error', new Error('Username is required to use password'))
return false
}
if (isStringOrBuffer(password)) {
length += byteLength(password) + 2
} else {
stream.emit('error', new Error('Invalid password'))
return false
}
}
// Generate header
stream.write(protocol.CONNECT_HEADER)
// Generate length
writeVarByteInt(stream, length)
// Generate protocol ID
writeStringOrBuffer(stream, protocolId)
stream.write(
protocolVersion === 4
? protocol.VERSION4
: protocolVersion === 5
? protocol.VERSION5
: protocol.VERSION3
)
// Connect flags
let flags = 0
flags |= (username != null) ? protocol.USERNAME_MASK : 0
flags |= (password != null) ? 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)
// Properties
if (protocolVersion === 5) {
propertiesData.write()
}
// Client ID
writeStringOrBuffer(stream, clientId)
// Will
if (will) {
if (protocolVersion === 5) {
willProperties.write()
}
writeString(stream, will.topic)
writeStringOrBuffer(stream, will.payload)
}
// Username and password
if (username != null) {
writeStringOrBuffer(stream, username)
}
if (password != null) {
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 (packet, stream, opts) {
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const rc = version === 5 ? settings.reasonCode : settings.returnCode
const properties = settings.properties
let length = 2 // length of rc and sessionHeader
// Check return code
if (typeof rc !== 'number') {
stream.emit('error', new Error('Invalid return code'))
return false
}
// mqtt5 properties
let propertiesData = null
if (version === 5) {
propertiesData = getProperties(stream, properties)
if (!propertiesData) { return false }
length += propertiesData.length
}
stream.write(protocol.CONNACK_HEADER)
// length
writeVarByteInt(stream, length)
stream.write(settings.sessionPresent ? protocol.SESSIONPRESENT_HEADER : zeroBuf)
stream.write(Buffer.from([rc]))
if (propertiesData != null) {
propertiesData.write()
}
return true
}
function publish (packet, stream, opts) {
debug('publish: packet: %o', packet)
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const qos = settings.qos || 0
const retain = settings.retain ? protocol.RETAIN_MASK : 0
const topic = settings.topic
const payload = settings.payload || empty
const id = settings.messageId
const properties = settings.properties
let 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
// mqtt5 properties
let propertiesData = null
if (version === 5) {
propertiesData = getProperties(stream, properties)
if (!propertiesData) { return false }
length += propertiesData.length
}
// Header
stream.write(protocol.PUBLISH_HEADER[qos][settings.dup ? 1 : 0][retain ? 1 : 0])
// Remaining length
writeVarByteInt(stream, length)
// Topic
writeNumber(stream, byteLength(topic))
stream.write(topic)
// Message ID
if (qos > 0) writeNumber(stream, id)
// Properties
if (propertiesData != null) {
propertiesData.write()
}
// Payload
debug('publish: payload: %o', payload)
return stream.write(payload)
}
/* Puback, pubrec, pubrel and pubcomp */
function confirmation (packet, stream, opts) {
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const type = settings.cmd || 'puback'
const id = settings.messageId
const dup = (settings.dup && type === 'pubrel') ? protocol.DUP_MASK : 0
let qos = 0
const reasonCode = settings.reasonCode
const properties = settings.properties
let length = version === 5 ? 3 : 2
if (type === 'pubrel') qos = 1
// Check message ID
if (typeof id !== 'number') {
stream.emit('error', new Error('Invalid messageId'))
return false
}
// properies mqtt 5
let propertiesData = null
if (version === 5) {
// Confirm should not add empty property length with no properties (rfc 3.4.2.2.1)
if (typeof properties === 'object') {
propertiesData = getPropertiesByMaximumPacketSize(stream, properties, opts, length)
if (!propertiesData) { return false }
length += propertiesData.length
}
}
// Header
stream.write(protocol.ACKS[type][qos][dup][0])
// Length
writeVarByteInt(stream, length)
// Message ID
writeNumber(stream, id)
// reason code in header
if (version === 5) {
stream.write(Buffer.from([reasonCode]))
}
// properies mqtt 5
if (propertiesData !== null) {
propertiesData.write()
}
return true
}
function subscribe (packet, stream, opts) {
debug('subscribe: packet: ')
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const dup = settings.dup ? protocol.DUP_MASK : 0
const id = settings.messageId
const subs = settings.subscriptions
const properties = settings.properties
let length = 0
// Check message ID
if (typeof id !== 'number') {
stream.emit('error', new Error('Invalid messageId'))
return false
} else length += 2
// properies mqtt 5
let propertiesData = null
if (version === 5) {
propertiesData = getProperties(stream, properties)
if (!propertiesData) { return false }
length += propertiesData.length
}
// Check subscriptions
if (typeof subs === 'object' && subs.length) {
for (let i = 0; i < subs.length; i += 1) {
const itopic = subs[i].topic
const 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
}
if (version === 5) {
const nl = subs[i].nl || false
if (typeof nl !== 'boolean') {
stream.emit('error', new Error('Invalid subscriptions - invalid No Local'))
return false
}
const rap = subs[i].rap || false
if (typeof rap !== 'boolean') {
stream.emit('error', new Error('Invalid subscriptions - invalid Retain as Published'))
return false
}
const rh = subs[i].rh || 0
if (typeof rh !== 'number' || rh > 2) {
stream.emit('error', new Error('Invalid subscriptions - invalid Retain Handling'))
return false
}
}
length += Buffer.byteLength(itopic) + 2 + 1
}
} else {
stream.emit('error', new Error('Invalid subscriptions'))
return false
}
// Generate header
debug('subscribe: writing to stream: %o', protocol.SUBSCRIBE_HEADER)
stream.write(protocol.SUBSCRIBE_HEADER[1][dup ? 1 : 0][0])
// Generate length
writeVarByteInt(stream, length)
// Generate message ID
writeNumber(stream, id)
// properies mqtt 5
if (propertiesData !== null) {
propertiesData.write()
}
let result = true
// Generate subs
for (const sub of subs) {
const jtopic = sub.topic
const jqos = sub.qos
const jnl = +sub.nl
const jrap = +sub.rap
const jrh = sub.rh
let joptions
// Write topic string
writeString(stream, jtopic)
// options process
joptions = protocol.SUBSCRIBE_OPTIONS_QOS[jqos]
if (version === 5) {
joptions |= jnl ? protocol.SUBSCRIBE_OPTIONS_NL : 0
joptions |= jrap ? protocol.SUBSCRIBE_OPTIONS_RAP : 0
joptions |= jrh ? protocol.SUBSCRIBE_OPTIONS_RH[jrh] : 0
}
// Write options
result = stream.write(Buffer.from([joptions]))
}
return result
}
function suback (packet, stream, opts) {
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const id = settings.messageId
const granted = settings.granted
const properties = settings.properties
let 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 (let 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
}
// properies mqtt 5
let propertiesData = null
if (version === 5) {
propertiesData = getPropertiesByMaximumPacketSize(stream, properties, opts, length)
if (!propertiesData) { return false }
length += propertiesData.length
}
// header
stream.write(protocol.SUBACK_HEADER)
// Length
writeVarByteInt(stream, length)
// Message ID
writeNumber(stream, id)
// properies mqtt 5
if (propertiesData !== null) {
propertiesData.write()
}
return stream.write(Buffer.from(granted))
}
function unsubscribe (packet, stream, opts) {
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const id = settings.messageId
const dup = settings.dup ? protocol.DUP_MASK : 0
const unsubs = settings.unsubscriptions
const properties = settings.properties
let 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 (let 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
}
// properies mqtt 5
let propertiesData = null
if (version === 5) {
propertiesData = getProperties(stream, properties)
if (!propertiesData) { return false }
length += propertiesData.length
}
// Header
stream.write(protocol.UNSUBSCRIBE_HEADER[1][dup ? 1 : 0][0])
// Length
writeVarByteInt(stream, length)
// Message ID
writeNumber(stream, id)
// properies mqtt 5
if (propertiesData !== null) {
propertiesData.write()
}
// Unsubs
let result = true
for (let j = 0; j < unsubs.length; j++) {
result = writeString(stream, unsubs[j])
}
return result
}
function unsuback (packet, stream, opts) {
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const id = settings.messageId
const dup = settings.dup ? protocol.DUP_MASK : 0
const granted = settings.granted
const properties = settings.properties
const type = settings.cmd
const qos = 0
let length = 2
// Check message ID
if (typeof id !== 'number') {
stream.emit('error', new Error('Invalid messageId'))
return false
}
// Check granted
if (version === 5) {
if (typeof granted === 'object' && granted.length) {
for (let 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
}
}
// properies mqtt 5
let propertiesData = null
if (version === 5) {
propertiesData = getPropertiesByMaximumPacketSize(stream, properties, opts, length)
if (!propertiesData) { return false }
length += propertiesData.length
}
// Header
stream.write(protocol.ACKS[type][qos][dup][0])
// Length
writeVarByteInt(stream, length)
// Message ID
writeNumber(stream, id)
// properies mqtt 5
if (propertiesData !== null) {
propertiesData.write()
}
// payload
if (version === 5) {
stream.write(Buffer.from(granted))
}
return true
}
function emptyPacket (packet, stream, opts) {
return stream.write(protocol.EMPTY[packet.cmd])
}
function disconnect (packet, stream, opts) {
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const reasonCode = settings.reasonCode
const properties = settings.properties
let length = version === 5 ? 1 : 0
// properies mqtt 5
let propertiesData = null
if (version === 5) {
propertiesData = getPropertiesByMaximumPacketSize(stream, properties, opts, length)
if (!propertiesData) { return false }
length += propertiesData.length
}
// Header
stream.write(Buffer.from([protocol.codes.disconnect << 4]))
// Length
writeVarByteInt(stream, length)
// reason code in header
if (version === 5) {
stream.write(Buffer.from([reasonCode]))
}
// properies mqtt 5
if (propertiesData !== null) {
propertiesData.write()
}
return true
}
function auth (packet, stream, opts) {
const version = opts ? opts.protocolVersion : 4
const settings = packet || {}
const reasonCode = settings.reasonCode
const properties = settings.properties
let length = version === 5 ? 1 : 0
if (version !== 5) stream.emit('error', new Error('Invalid mqtt version for auth packet'))
// properies mqtt 5
const propertiesData = getPropertiesByMaximumPacketSize(stream, properties, opts, length)
if (!propertiesData) { return false }
length += propertiesData.length
// Header
stream.write(Buffer.from([protocol.codes.auth << 4]))
// Length
writeVarByteInt(stream, length)
// reason code in header
stream.write(Buffer.from([reasonCode]))
// properies mqtt 5
if (propertiesData !== null) {
propertiesData.write()
}
return true
}
/**
* writeVarByteInt - write an MQTT style variable byte integer to the buffer
*
* @param <Buffer> buffer - destination
* @param <Number> pos - offset
* @param <Number> length - length (>0)
* @returns <Number> number of bytes written
*
* @api private
*/
const varByteIntCache = {}
function writeVarByteInt (stream, num) {
let buffer = varByteIntCache[num]
if (!buffer) {
buffer = genBufVariableByteInt(num)
if (num < 16384) varByteIntCache[num] = buffer
}
debug('writeVarByteInt: writing to stream: %o', buffer)
stream.write(buffer)
}
/**
* writeString - write a utf8 string to the buffer
*
* @param <Buffer> buffer - destination
* @param <Number> pos - offset
* @param <String> string - string to write
* @return <Number> number of bytes written
*
* @api private
*/
function writeString (stream, string) {
const strlen = Buffer.byteLength(string)
writeNumber(stream, strlen)
debug('writeString: %s', string)
return stream.write(string, 'utf8')
}
/**
* writeStringPair - write a utf8 string pairs to the buffer
*
* @param <Buffer> buffer - destination
* @param <String> name - string name to write
* @param <String> value - string value to write
* @return <Number> number of bytes written
*
* @api private
*/
function writeStringPair (stream, name, value) {
writeString(stream, name)
writeString(stream, value)
}
/**
* writeNumber - write a two byte number to the buffer
*
* @param <Buffer> buffer - destination
* @param <Number> pos - offset
* @param <String> number - number to write
* @return <Number> number of bytes written
*
* @api private
*/
function writeNumberCached (stream, number) {
debug('writeNumberCached: number: %d', number)
debug('writeNumberCached: %o', numCache[number])
return stream.write(numCache[number])
}
function writeNumberGenerated (stream, number) {
const generatedNumber = generateNumber(number)
debug('writeNumberGenerated: %o', generatedNumber)
return stream.write(generatedNumber)
}
function write4ByteNumber (stream, number) {
const generated4ByteBuffer = generate4ByteBuffer(number)
debug('write4ByteNumber: %o', generated4ByteBuffer)
return stream.write(generated4ByteBuffer)
}
/**
* writeStringOrBuffer - write a String or Buffer with the its length prefix
*
* @param <Buffer> buffer - destination
* @param <Number> pos - offset
* @param <String> toWrite - String or Buffer
* @return <Number> number of bytes written
*/
function writeStringOrBuffer (stream, toWrite) {
if (typeof toWrite === 'string') {
writeString(stream, toWrite)
} else if (toWrite) {
writeNumber(stream, toWrite.length)
stream.write(toWrite)
} else writeNumber(stream, 0)
}
function getProperties (stream, properties) {
/* connect properties */
if (typeof properties !== 'object' || properties.length != null) {
return {
length: 1,
write () {
writeProperties(stream, {}, 0)
}
}
}
let propertiesLength = 0
function getLengthProperty (name, value) {
const type = protocol.propertiesTypes[name]
let length = 0
switch (type) {
case 'byte': {
if (typeof value !== 'boolean') {
stream.emit('error', new Error(`Invalid ${name}: ${value}`))
return false
}
length += 1 + 1
break
}
case 'int8': {
if (typeof value !== 'number' || value < 0 || value > 0xff) {
stream.emit('error', new Error(`Invalid ${name}: ${value}`))
return false
}
length += 1 + 1
break
}
case 'binary': {
if (value && value === null) {
stream.emit('error', new Error(`Invalid ${name}: ${value}`))
return false
}
length += 1 + Buffer.byteLength(value) + 2
break
}
case 'int16': {
if (typeof value !== 'number' || value < 0 || value > 0xffff) {
stream.emit('error', new Error(`Invalid ${name}: ${value}`))
return false
}
length += 1 + 2
break
}
case 'int32': {
if (typeof value !== 'number' || value < 0 || value > 0xffffffff) {
stream.emit('error', new Error(`Invalid ${name}: ${value}`))
return false
}
length += 1 + 4
break
}
case 'var': {
// var byte integer is max 24 bits packed in 32 bits
if (typeof value !== 'number' || value < 0 || value > 0x0fffffff) {
stream.emit('error', new Error(`Invalid ${name}: ${value}`))
return false
}
length += 1 + Buffer.byteLength(genBufVariableByteInt(value))
break
}
case 'string': {
if (typeof value !== 'string') {
stream.emit('error', new Error(`Invalid ${name}: ${value}`))
return false
}
length += 1 + 2 + Buffer.byteLength(value.toString())
break
}
case 'pair': {
if (typeof value !== 'object') {
stream.emit('error', new Error(`Invalid ${name}: ${value}`))
return false
}
length += Object.getOwnPropertyNames(value).reduce((result, name) => {
const currentValue = value[name]
if (Array.isArray(currentValue)) {
result += currentValue.reduce((currentLength, value) => {
currentLength += 1 + 2 + Buffer.byteLength(name.toString()) + 2 + Buffer.byteLength(value.toString())
return currentLength
}, 0)
} else {
result += 1 + 2 + Buffer.byteLength(name.toString()) + 2 + Buffer.byteLength(value[name].toString())
}
return result
}, 0)
break
}
default: {
stream.emit('error', new Error(`Invalid property ${name}: ${value}`))
return false
}
}
return length
}
if (properties) {
for (const propName in properties) {
let propLength = 0
let propValueLength = 0
const propValue = properties[propName]
if (Array.isArray(propValue)) {
for (let valueIndex = 0; valueIndex < propValue.length; valueIndex++) {
propValueLength = getLengthProperty(propName, propValue[valueIndex])
if (!propValueLength) { return false }
propLength += propValueLength
}
} else {
propValueLength = getLengthProperty(propName, propValue)
if (!propValueLength) { return false }
propLength = propValueLength
}
if (!propLength) return false
propertiesLength += propLength
}
}
const propertiesLengthLength = Buffer.byteLength(genBufVariableByteInt(propertiesLength))
return {
length: propertiesLengthLength + propertiesLength,
write () {
writeProperties(stream, properties, propertiesLength)
}
}
}
function getPropertiesByMaximumPacketSize (stream, properties, opts, length) {
const mayEmptyProps = ['reasonString', 'userProperties']
const maximumPacketSize = opts && opts.properties && opts.properties.maximumPacketSize ? opts.properties.maximumPacketSize : 0
let propertiesData = getProperties(stream, properties)
if (maximumPacketSize) {
while (length + propertiesData.length > maximumPacketSize) {
const currentMayEmptyProp = mayEmptyProps.shift()
if (currentMayEmptyProp && properties[currentMayEmptyProp]) {
delete properties[currentMayEmptyProp]
propertiesData = getProperties(stream, properties)
} else {
return false
}
}
}
return propertiesData
}
function writeProperty (stream, propName, value) {
const type = protocol.propertiesTypes[propName]
switch (type) {
case 'byte': {
stream.write(Buffer.from([protocol.properties[propName]]))
stream.write(Buffer.from([+value]))
break
}
case 'int8': {
stream.write(Buffer.from([protocol.properties[propName]]))
stream.write(Buffer.from([value]))
break
}
case 'binary': {
stream.write(Buffer.from([protocol.properties[propName]]))
writeStringOrBuffer(stream, value)
break
}
case 'int16': {
stream.write(Buffer.from([protocol.properties[propName]]))
writeNumber(stream, value)
break
}
case 'int32': {
stream.write(Buffer.from([protocol.properties[propName]]))
write4ByteNumber(stream, value)
break
}
case 'var': {
stream.write(Buffer.from([protocol.properties[propName]]))
writeVarByteInt(stream, value)
break
}
case 'string': {
stream.write(Buffer.from([protocol.properties[propName]]))
writeString(stream, value)
break
}
case 'pair': {
Object.getOwnPropertyNames(value).forEach(name => {
const currentValue = value[name]
if (Array.isArray(currentValue)) {
currentValue.forEach(value => {
stream.write(Buffer.from([protocol.properties[propName]]))
writeStringPair(stream, name.toString(), value.toString())
})
} else {
stream.write(Buffer.from([protocol.properties[propName]]))
writeStringPair(stream, name.toString(), currentValue.toString())
}
})
break
}
default: {
stream.emit('error', new Error(`Invalid property ${propName} value: ${value}`))
return false
}
}
}
function writeProperties (stream, properties, propertiesLength) {
/* write properties to stream */
writeVarByteInt(stream, propertiesLength)
for (const propName in properties) {
if (Object.prototype.hasOwnProperty.call(properties, propName) && properties[propName] !== null) {
const value = properties[propName]
if (Array.isArray(value)) {
for (let valueIndex = 0; valueIndex < value.length; valueIndex++) {
writeProperty(stream, propName, value[valueIndex])
}
} else {
writeProperty(stream, propName, value)
}
}
}
}
function byteLength (bufOrString) {
if (!bufOrString) return 0
else if (bufOrString instanceof Buffer) return bufOrString.length
else return Buffer.byteLength(bufOrString)
}
function isStringOrBuffer (field) {
return typeof field === 'string' || field instanceof Buffer
}
module.exports = generate
}).call(this,require("buffer").Buffer)
},{"./constants":32,"./numbers":37,"buffer":12,"debug":14,"process-nextick-args":43}],41:[function(require,module,exports){
/**
* Helpers.
*/
var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var w = d * 7;
var y = d * 365.25;
/**
* Parse or format the given `val`.
*
* Options:
*
* - `long` verbose formatting [false]
*
* @param {String|Number} val
* @param {Object} [options]
* @throws {Error} throw an error if val is not a non-empty string or a number
* @return {String|Number}
* @api public
*/
module.exports = function(val, options) {
options = options || {};
var type = typeof val;
if (type === 'string' && val.length > 0) {
return parse(val);
} else if (type === 'number' && isFinite(val)) {
return options.long ? fmtLong(val) : fmtShort(val);
}
throw new Error(
'val is not a non-empty string or a valid number. val=' +
JSON.stringify(val)
);
};
/**
* Parse the given `str` and return milliseconds.
*
* @param {String} str
* @return {Number}
* @api private
*/
function parse(str) {
str = String(str);
if (str.length > 100) {
return;
}
var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(
str
);
if (!match) {
return;
}
var n = parseFloat(match[1]);
var type = (match[2] || 'ms').toLowerCase();
switch (type) {
case 'years':
case 'year':
case 'yrs':
case 'yr':
case 'y':
return n * y;
case 'weeks':
case 'week':
case 'w':
return n * w;
case 'days':
case 'day':
case 'd':
return n * d;
case 'hours':
case 'hour':
case 'hrs':
case 'hr':
case 'h':
return n * h;
case 'minutes':
case 'minute':
case 'mins':
case 'min':
case 'm':
return n * m;
case 'seconds':
case 'second':
case 'secs':
case 'sec':
case 's':
return n * s;
case 'milliseconds':
case 'millisecond':
case 'msecs':
case 'msec':
case 'ms':
return n;
default:
return undefined;
}
}
/**
* Short format for `ms`.
*
* @param {Number} ms
* @return {String}
* @api private
*/
function fmtShort(ms) {
var msAbs = Math.abs(ms);
if (msAbs >= d) {
return Math.round(ms / d) + 'd';
}
if (msAbs >= h) {
return Math.round(ms / h) + 'h';
}
if (msAbs >= m) {
return Math.round(ms / m) + 'm';
}
if (msAbs >= s) {
return Math.round(ms / s) + 's';
}
return ms + 'ms';
}
/**
* Long format for `ms`.
*
* @param {Number} ms
* @return {String}
* @api private
*/
function fmtLong(ms) {
var msAbs = Math.abs(ms);
if (msAbs >= d) {
return plural(ms, msAbs, d, 'day');
}
if (msAbs >= h) {
return plural(ms, msAbs, h, 'hour');
}
if (msAbs >= m) {
return plural(ms, msAbs, m, 'minute');
}
if (msAbs >= s) {
return plural(ms, msAbs, s, 'second');
}
return ms + ' ms';
}
/**
* Pluralization helper.
*/
function plural(ms, msAbs, n, name) {
var isPlural = msAbs >= n * 1.5;
return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
}
},{}],42:[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":72}],43:[function(require,module,exports){
(function (process){
'use strict';
if (typeof process === 'undefined' ||
!process.version ||
process.version.indexOf('v0.') === 0 ||
process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
module.exports = { nextTick: nextTick };
} else {
module.exports = process
}
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":44}],44:[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; };
},{}],45:[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 <https://mathiasbynens.be/notes/javascript-encoding>
* @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 <n,i> state to <m,0>,
// 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 <https://mathiasbynens.be/notes/javascript-encoding>
* @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 : {})
},{}],46:[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]';
};
},{}],47:[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;
};
},{}],48:[function(require,module,exports){
'use strict';
exports.decode = exports.parse = require('./decode');
exports.encode = exports.stringify = require('./encode');
},{"./decode":46,"./encode":47}],49:[function(require,module,exports){
'use strict';
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
var codes = {};
function createErrorType(code, message, Base) {
if (!Base) {
Base = Error;
}
function getMessage(arg1, arg2, arg3) {
if (typeof message === 'string') {
return message;
} else {
return message(arg1, arg2, arg3);
}
}
var NodeError =
/*#__PURE__*/
function (_Base) {
_inheritsLoose(NodeError, _Base);
function NodeError(arg1, arg2, arg3) {
return _Base.call(this, getMessage(arg1, arg2, arg3)) || this;
}
return NodeError;
}(Base);
NodeError.prototype.name = Base.name;
NodeError.prototype.code = code;
codes[code] = NodeError;
} // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js
function oneOf(expected, thing) {
if (Array.isArray(expected)) {
var len = expected.length;
expected = expected.map(function (i) {
return String(i);
});
if (len > 2) {
return "one of ".concat(thing, " ").concat(expected.slice(0, len - 1).join(', '), ", or ") + expected[len - 1];
} else if (len === 2) {
return "one of ".concat(thing, " ").concat(expected[0], " or ").concat(expected[1]);
} else {
return "of ".concat(thing, " ").concat(expected[0]);
}
} else {
return "of ".concat(thing, " ").concat(String(expected));
}
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
function startsWith(str, search, pos) {
return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
function endsWith(str, search, this_len) {
if (this_len === undefined || this_len > str.length) {
this_len = str.length;
}
return str.substring(this_len - search.length, this_len) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
function includes(str, search, start) {
if (typeof start !== 'number') {
start = 0;
}
if (start + search.length > str.length) {
return false;
} else {
return str.indexOf(search, start) !== -1;
}
}
createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
return 'The value "' + value + '" is invalid for option "' + name + '"';
}, TypeError);
createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
// determiner: 'must be' or 'must not be'
var determiner;
if (typeof expected === 'string' && startsWith(expected, 'not ')) {
determiner = 'must not be';
expected = expected.replace(/^not /, '');
} else {
determiner = 'must be';
}
var msg;
if (endsWith(name, ' argument')) {
// For cases like 'first argument'
msg = "The ".concat(name, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
} else {
var type = includes(name, '.') ? 'property' : 'argument';
msg = "The \"".concat(name, "\" ").concat(type, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
}
msg += ". Received type ".concat(typeof actual);
return msg;
}, TypeError);
createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
return 'The ' + name + ' method is not implemented';
});
createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
createErrorType('ERR_STREAM_DESTROYED', function (name) {
return 'Cannot call ' + name + ' after a stream was destroyed';
});
createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
return 'Unknown encoding: ' + arg;
}, TypeError);
createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
module.exports.codes = codes;
},{}],50:[function(require,module,exports){
(function (process){
// 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';
/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
keys.push(key);
}
return keys;
};
/*</replacement>*/
module.exports = Duplex;
var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');
require('inherits')(Duplex, Readable);
{
// Allow the keys array to be GC'ed.
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);
this.allowHalfOpen = true;
if (options) {
if (options.readable === false) this.readable = false;
if (options.writable === false) this.writable = false;
if (options.allowHalfOpen === false) {
this.allowHalfOpen = false;
this.once('end', onend);
}
}
}
Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState.highWaterMark;
}
});
Object.defineProperty(Duplex.prototype, 'writableBuffer', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState && this._writableState.getBuffer();
}
});
Object.defineProperty(Duplex.prototype, 'writableLength', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState.length;
}
}); // the no-half-open enforcer
function onend() {
// If the writable side ended, then we're ok.
if (this._writableState.ended) return; // no more data can be written.
// But allow more writes to happen in this tick.
process.nextTick(onEndNT, this);
}
function onEndNT(self) {
self.end();
}
Object.defineProperty(Duplex.prototype, 'destroyed', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
if (this._readableState === undefined || this._writableState === undefined) {
return false;
}
return this._readableState.destroyed && this._writableState.destroyed;
},
set: function set(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;
}
});
}).call(this,require('_process'))
},{"./_stream_readable":52,"./_stream_writable":54,"_process":44,"inherits":29}],51:[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');
require('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":53,"inherits":29}],52:[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';
module.exports = Readable;
/*<replacement>*/
var Duplex;
/*</replacement>*/
Readable.ReadableState = ReadableState;
/*<replacement>*/
var EE = require('events').EventEmitter;
var EElistenerCount = function EElistenerCount(emitter, type) {
return emitter.listeners(type).length;
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
var Buffer = require('buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/*<replacement>*/
var debugUtil = require('util');
var debug;
if (debugUtil && debugUtil.debuglog) {
debug = debugUtil.debuglog('stream');
} else {
debug = function debug() {};
}
/*</replacement>*/
var BufferList = require('./internal/streams/buffer_list');
var destroyImpl = require('./internal/streams/destroy');
var _require = require('./internal/streams/state'),
getHighWaterMark = _require.getHighWaterMark;
var _require$codes = require('../errors').codes,
ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
ERR_STREAM_PUSH_AFTER_EOF = _require$codes.ERR_STREAM_PUSH_AFTER_EOF,
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
ERR_STREAM_UNSHIFT_AFTER_END_EVENT = _require$codes.ERR_STREAM_UNSHIFT_AFTER_END_EVENT; // Lazy loaded to improve the startup performance.
var StringDecoder;
var createReadableStreamAsyncIterator;
var from;
require('inherits')(Readable, Stream);
var errorOrDestroy = destroyImpl.errorOrDestroy;
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); // 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 (Array.isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}
function ReadableState(options, stream, isDuplex) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {}; // Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream.
// These options can be provided separately as readableXXX and writableXXX.
if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // 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 (isDuplex) 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"
this.highWaterMark = getHighWaterMark(this, options, 'readableHighWaterMark', isDuplex); // 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;
this.paused = true; // Should close be emitted on destroy. Defaults to true.
this.emitClose = options.emitClose !== false; // Should .destroy() be called after 'end' (and potentially 'finish')
this.autoDestroy = !!options.autoDestroy; // 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); // Checking for a Stream.Duplex instance is faster here instead of inside
// the ReadableState constructor, at least with V8 6.5
var isDuplex = this instanceof Duplex;
this._readableState = new ReadableState(options, this, isDuplex); // 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', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
if (this._readableState === undefined) {
return false;
}
return this._readableState.destroyed;
},
set: function set(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) {
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) {
debug('readableAddChunk', chunk);
var state = stream._readableState;
if (chunk === null) {
state.reading = false;
onEofChunk(stream, state);
} else {
var er;
if (!skipChunkCheck) er = chunkInvalid(state, chunk);
if (er) {
errorOrDestroy(stream, 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) errorOrDestroy(stream, new ERR_STREAM_UNSHIFT_AFTER_END_EVENT());else addChunk(stream, state, chunk, true);
} else if (state.ended) {
errorOrDestroy(stream, new ERR_STREAM_PUSH_AFTER_EOF());
} else if (state.destroyed) {
return false;
} 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;
maybeReadMore(stream, state);
}
} // We can push more data if we are below the highWaterMark.
// 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.
return !state.ended && (state.length < state.highWaterMark || state.length === 0);
}
function addChunk(stream, state, chunk, addToFront) {
if (state.flowing && state.length === 0 && !state.sync) {
state.awaitDrain = 0;
stream.emit('data', chunk);
} 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 ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer', 'Uint8Array'], chunk);
}
return er;
}
Readable.prototype.isPaused = function () {
return this._readableState.flowing === false;
}; // backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
var decoder = new StringDecoder(enc);
this._readableState.decoder = decoder; // If setEncoding(null), decoder.encoding equals utf8
this._readableState.encoding = this._readableState.decoder.encoding; // Iterate over current buffer to convert already stored Buffers:
var p = this._readableState.buffer.head;
var content = '';
while (p !== null) {
content += decoder.write(p.data);
p = p.next;
}
this._readableState.buffer.clear();
if (content !== '') this._readableState.buffer.push(content);
this._readableState.length = content.length;
return this;
}; // Don't raise the hwm > 1GB
var MAX_HWM = 0x40000000;
function computeNewHighWaterMark(n) {
if (n >= MAX_HWM) {
// TODO(ronag): Throw ERR_VALUE_OUT_OF_RANGE.
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.highWaterMark !== 0 ? state.length >= state.highWaterMark : state.length > 0) || 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 = state.length <= state.highWaterMark;
n = 0;
} else {
state.length -= n;
state.awaitDrain = 0;
}
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) {
debug('onEofChunk');
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;
if (state.sync) {
// if we are sync, wait until next tick to emit the data.
// Otherwise we risk emitting data in the flow()
// the readable code triggers during a read() call
emitReadable(stream);
} else {
// emit 'readable' now to make sure it gets picked up.
state.needReadable = false;
if (!state.emittedReadable) {
state.emittedReadable = true;
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;
debug('emitReadable', state.needReadable, state.emittedReadable);
state.needReadable = false;
if (!state.emittedReadable) {
debug('emitReadable', state.flowing);
state.emittedReadable = true;
process.nextTick(emitReadable_, stream);
}
}
function emitReadable_(stream) {
var state = stream._readableState;
debug('emitReadable_', state.destroyed, state.length, state.ended);
if (!state.destroyed && (state.length || state.ended)) {
stream.emit('readable');
state.emittedReadable = false;
} // The stream needs another readable event if
// 1. It is not flowing, as the flow mechanism will take
// care of it.
// 2. It is not ended.
// 3. It is below the highWaterMark, so we can schedule
// another readable later.
state.needReadable = !state.flowing && !state.ended && state.length <= state.highWaterMark;
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;
process.nextTick(maybeReadMore_, stream, state);
}
}
function maybeReadMore_(stream, state) {
// Attempt to read more data if we should.
//
// The conditions for reading more data are (one of):
// - Not enough data buffered (state.length < state.highWaterMark). The loop
// is responsible for filling the buffer with enough data if such data
// is available. If highWaterMark is 0 and we are not in the flowing mode
// we should _not_ attempt to buffer any extra data. We'll get more data
// when the stream consumer calls read() instead.
// - No data in the buffer, and the stream is in flowing mode. In this mode
// the loop below is responsible for ensuring read() is called. Failing to
// call read here would abort the flow and there's no other mechanism for
// continuing the flow if the stream consumer has just subscribed to the
// 'data' event.
//
// In addition to the above conditions to keep reading data, the following
// conditions prevent the data from being read:
// - The stream has ended (state.ended).
// - There is already a pending 'read' operation (state.reading). This is a
// case where the the stream has called the implementation defined _read()
// method, but they are processing the call asynchronously and have _not_
// called push() with new data. In this case we skip performing more
// read()s. The execution ends in this method again after the _read() ends
// up calling push() with more data.
while (!state.reading && !state.ended && (state.length < state.highWaterMark || state.flowing && state.length === 0)) {
var len = state.length;
debug('maybeReadMore read 0');
stream.read(0);
if (len === state.length) // didn't get any data, stop spinning.
break;
}
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) {
errorOrDestroy(this, new ERR_METHOD_NOT_IMPLEMENTED('_read()'));
};
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) process.nextTick(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();
}
src.on('data', ondata);
function ondata(chunk) {
debug('ondata');
var ret = dest.write(chunk);
debug('dest.write', ret);
if (ret === false) {
// 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', state.awaitDrain);
state.awaitDrain++;
}
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) errorOrDestroy(dest, 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 pipeOnDrainFunctionResult() {
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, {
hasUnpiped: false
});
}
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);
var state = this._readableState;
if (ev === 'data') {
// update readableListening so that resume() may be a no-op
// a few lines down. This is needed to support once('readable').
state.readableListening = this.listenerCount('readable') > 0; // Try start flowing on next tick if stream isn't explicitly paused
if (state.flowing !== false) this.resume();
} else if (ev === 'readable') {
if (!state.endEmitted && !state.readableListening) {
state.readableListening = state.needReadable = true;
state.flowing = false;
state.emittedReadable = false;
debug('on readable', state.length, state.reading);
if (state.length) {
emitReadable(this);
} else if (!state.reading) {
process.nextTick(nReadingNextTick, this);
}
}
}
return res;
};
Readable.prototype.addListener = Readable.prototype.on;
Readable.prototype.removeListener = function (ev, fn) {
var res = Stream.prototype.removeListener.call(this, ev, fn);
if (ev === 'readable') {
// We need to check if there is someone still listening to
// readable and reset the state. However this needs to happen
// after readable has been emitted but before I/O (nextTick) to
// support once('readable', fn) cycles. This means that calling
// resume within the same tick will have no
// effect.
process.nextTick(updateReadableListening, this);
}
return res;
};
Readable.prototype.removeAllListeners = function (ev) {
var res = Stream.prototype.removeAllListeners.apply(this, arguments);
if (ev === 'readable' || ev === undefined) {
// We need to check if there is someone still listening to
// readable and reset the state. However this needs to happen
// after readable has been emitted but before I/O (nextTick) to
// support once('readable', fn) cycles. This means that calling
// resume within the same tick will have no
// effect.
process.nextTick(updateReadableListening, this);
}
return res;
};
function updateReadableListening(self) {
var state = self._readableState;
state.readableListening = self.listenerCount('readable') > 0;
if (state.resumeScheduled && !state.paused) {
// flowing needs to be set to true now, otherwise
// the upcoming resume will not flow.
state.flowing = true; // crude way to check if we should resume
} else if (self.listenerCount('data') > 0) {
self.resume();
}
}
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'); // we flow only if there is no one listening
// for readable, but we still have to call
// resume()
state.flowing = !state.readableListening;
resume(this, state);
}
state.paused = false;
return this;
};
function resume(stream, state) {
if (!state.resumeScheduled) {
state.resumeScheduled = true;
process.nextTick(resume_, stream, state);
}
}
function resume_(stream, state) {
debug('resume', state.reading);
if (!state.reading) {
stream.read(0);
}
state.resumeScheduled = false;
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 (this._readableState.flowing !== false) {
debug('pause');
this._readableState.flowing = false;
this.emit('pause');
}
this._readableState.paused = true;
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 _this = this;
var state = this._readableState;
var paused = false;
stream.on('end', function () {
debug('wrapped end');
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length) _this.push(chunk);
}
_this.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 = _this.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 methodWrap(method) {
return function methodWrapReturnFunction() {
return stream[method].apply(stream, arguments);
};
}(i);
}
} // proxy certain important events.
for (var n = 0; n < kProxyEvents.length; n++) {
stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
} // when we try to consume some more bytes, simply unpause the
// underlying stream.
this._read = function (n) {
debug('wrapped _read', n);
if (paused) {
paused = false;
stream.resume();
}
};
return this;
};
if (typeof Symbol === 'function') {
Readable.prototype[Symbol.asyncIterator] = function () {
if (createReadableStreamAsyncIterator === undefined) {
createReadableStreamAsyncIterator = require('./internal/streams/async_iterator');
}
return createReadableStreamAsyncIterator(this);
};
}
Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._readableState.highWaterMark;
}
});
Object.defineProperty(Readable.prototype, 'readableBuffer', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._readableState && this._readableState.buffer;
}
});
Object.defineProperty(Readable.prototype, 'readableFlowing', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._readableState.flowing;
},
set: function set(state) {
if (this._readableState) {
this._readableState.flowing = state;
}
}
}); // exposed for testing purposes only.
Readable._fromList = fromList;
Object.defineProperty(Readable.prototype, 'readableLength', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._readableState.length;
}
}); // 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.first();else ret = state.buffer.concat(state.length);
state.buffer.clear();
} else {
// read part of list
ret = state.buffer.consume(n, state.decoder);
}
return ret;
}
function endReadable(stream) {
var state = stream._readableState;
debug('endReadable', state.endEmitted);
if (!state.endEmitted) {
state.ended = true;
process.nextTick(endReadableNT, state, stream);
}
}
function endReadableNT(state, stream) {
debug('endReadableNT', state.endEmitted, state.length); // Check that we didn't get one last unshift.
if (!state.endEmitted && state.length === 0) {
state.endEmitted = true;
stream.readable = false;
stream.emit('end');
if (state.autoDestroy) {
// In case of duplex streams we need a way to detect
// if the writable side is ready for autoDestroy as well
var wState = stream._writableState;
if (!wState || wState.autoDestroy && wState.finished) {
stream.destroy();
}
}
}
}
if (typeof Symbol === 'function') {
Readable.from = function (iterable, opts) {
if (from === undefined) {
from = require('./internal/streams/from');
}
return from(Readable, iterable, opts);
};
}
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 : {})
},{"../errors":49,"./_stream_duplex":50,"./internal/streams/async_iterator":55,"./internal/streams/buffer_list":56,"./internal/streams/destroy":57,"./internal/streams/from":59,"./internal/streams/state":61,"./internal/streams/stream":62,"_process":44,"buffer":12,"events":27,"inherits":29,"string_decoder/":67,"util":11}],53:[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 _require$codes = require('../errors').codes,
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
ERR_TRANSFORM_ALREADY_TRANSFORMING = _require$codes.ERR_TRANSFORM_ALREADY_TRANSFORMING,
ERR_TRANSFORM_WITH_LENGTH_0 = _require$codes.ERR_TRANSFORM_WITH_LENGTH_0;
var Duplex = require('./_stream_duplex');
require('inherits')(Transform, Duplex);
function afterTransform(er, data) {
var ts = this._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (cb === null) {
return this.emit('error', new ERR_MULTIPLE_CALLBACK());
}
ts.writechunk = null;
ts.writecb = null;
if (data != null) // single equals check for both `null` and `undefined`
this.push(data);
cb(er);
var rs = this._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
this._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform)) return new Transform(options);
Duplex.call(this, options);
this._transformState = {
afterTransform: afterTransform.bind(this),
needTransform: false,
transforming: false,
writecb: null,
writechunk: null,
writeencoding: null
}; // 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.on('prefinish', prefinish);
}
function prefinish() {
var _this = this;
if (typeof this._flush === 'function' && !this._readableState.destroyed) {
this._flush(function (er, data) {
done(_this, er, data);
});
} else {
done(this, null, null);
}
}
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) {
cb(new ERR_METHOD_NOT_IMPLEMENTED('_transform()'));
};
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.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) {
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
});
};
function done(stream, er, data) {
if (er) return stream.emit('error', er);
if (data != null) // single equals check for both `null` and `undefined`
stream.push(data); // TODO(BridgeAR): Write a test for these two error cases
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
if (stream._writableState.length) throw new ERR_TRANSFORM_WITH_LENGTH_0();
if (stream._transformState.transforming) throw new ERR_TRANSFORM_ALREADY_TRANSFORMING();
return stream.push(null);
}
},{"../errors":49,"./_stream_duplex":50,"inherits":29}],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.
// 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';
module.exports = Writable;
/* <replacement> */
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);
};
}
/* </replacement> */
/*<replacement>*/
var Duplex;
/*</replacement>*/
Writable.WritableState = WritableState;
/*<replacement>*/
var internalUtil = {
deprecate: require('util-deprecate')
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
var Buffer = require('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');
var _require = require('./internal/streams/state'),
getHighWaterMark = _require.getHighWaterMark;
var _require$codes = require('../errors').codes,
ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
ERR_STREAM_CANNOT_PIPE = _require$codes.ERR_STREAM_CANNOT_PIPE,
ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED,
ERR_STREAM_NULL_VALUES = _require$codes.ERR_STREAM_NULL_VALUES,
ERR_STREAM_WRITE_AFTER_END = _require$codes.ERR_STREAM_WRITE_AFTER_END,
ERR_UNKNOWN_ENCODING = _require$codes.ERR_UNKNOWN_ENCODING;
var errorOrDestroy = destroyImpl.errorOrDestroy;
require('inherits')(Writable, Stream);
function nop() {}
function WritableState(options, stream, isDuplex) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {}; // Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream,
// e.g. options.readableObjectMode vs. options.writableObjectMode, etc.
if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag to indicate whether or not this stream
// contains buffers or objects.
this.objectMode = !!options.objectMode;
if (isDuplex) 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()
this.highWaterMark = getHighWaterMark(this, options, 'writableHighWaterMark', isDuplex); // 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; // Should close be emitted on destroy. Defaults to true.
this.emitClose = options.emitClose !== false; // Should .destroy() be called after 'finish' (and potentially 'end')
this.autoDestroy = !!options.autoDestroy; // 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 writableStateBufferGetter() {
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 value(object) {
if (realHasInstance.call(this, object)) return true;
if (this !== Writable) return false;
return object && object._writableState instanceof WritableState;
}
});
} else {
realHasInstance = function realHasInstance(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.
// Checking for a Stream.Duplex instance is faster here instead of inside
// the WritableState constructor, at least with V8 6.5
var isDuplex = this instanceof Duplex;
if (!isDuplex && !realHasInstance.call(Writable, this)) return new Writable(options);
this._writableState = new WritableState(options, this, isDuplex); // 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 () {
errorOrDestroy(this, new ERR_STREAM_CANNOT_PIPE());
};
function writeAfterEnd(stream, cb) {
var er = new ERR_STREAM_WRITE_AFTER_END(); // TODO: defer error events consistently everywhere, not just the cb
errorOrDestroy(stream, er);
process.nextTick(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 er;
if (chunk === null) {
er = new ERR_STREAM_NULL_VALUES();
} else if (typeof chunk !== 'string' && !state.objectMode) {
er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer'], chunk);
}
if (er) {
errorOrDestroy(stream, er);
process.nextTick(cb, er);
return false;
}
return true;
}
Writable.prototype.write = function (chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
var isBuf = !state.objectMode && _isUint8Array(chunk);
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.ending) 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 () {
this._writableState.corked++;
};
Writable.prototype.uncork = function () {
var state = this._writableState;
if (state.corked) {
state.corked--;
if (!state.writing && !state.corked && !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 ERR_UNKNOWN_ENCODING(encoding);
this._writableState.defaultEncoding = encoding;
return this;
};
Object.defineProperty(Writable.prototype, 'writableBuffer', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState && this._writableState.getBuffer();
}
});
function decodeChunk(state, chunk, encoding) {
if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
chunk = Buffer.from(chunk, encoding);
}
return chunk;
}
Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState.highWaterMark;
}
}); // 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 (state.destroyed) state.onwrite(new ERR_STREAM_DESTROYED('write'));else 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
process.nextTick(cb, er); // this can emit finish, and it will always happen
// after error
process.nextTick(finishMaybe, stream, state);
stream._writableState.errorEmitted = true;
errorOrDestroy(stream, er);
} else {
// the caller expect this to happen before if
// it is async
cb(er);
stream._writableState.errorEmitted = true;
errorOrDestroy(stream, 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;
if (typeof cb !== 'function') throw new ERR_MULTIPLE_CALLBACK();
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) || stream.destroyed;
if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
clearBuffer(stream, state);
}
if (sync) {
process.nextTick(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);
}
state.bufferedRequestCount = 0;
} 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;
state.bufferedRequestCount--; // 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.bufferedRequest = entry;
state.bufferProcessing = false;
}
Writable.prototype._write = function (chunk, encoding, cb) {
cb(new ERR_METHOD_NOT_IMPLEMENTED('_write()'));
};
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) endWritable(this, state, cb);
return this;
};
Object.defineProperty(Writable.prototype, 'writableLength', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState.length;
}
});
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) {
errorOrDestroy(stream, 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.destroyed) {
state.pendingcb++;
state.finalCalled = true;
process.nextTick(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');
if (state.autoDestroy) {
// In case of duplex streams we need a way to detect
// if the readable side is ready for autoDestroy as well
var rState = stream._readableState;
if (!rState || rState.autoDestroy && rState.endEmitted) {
stream.destroy();
}
}
}
}
return need;
}
function endWritable(stream, state, cb) {
state.ending = true;
finishMaybe(stream, state);
if (cb) {
if (state.finished) process.nextTick(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;
} // reuse the free corkReq.
state.corkedRequestsFree.next = corkReq;
}
Object.defineProperty(Writable.prototype, 'destroyed', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
if (this._writableState === undefined) {
return false;
}
return this._writableState.destroyed;
},
set: function set(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) {
cb(err);
};
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../errors":49,"./_stream_duplex":50,"./internal/streams/destroy":57,"./internal/streams/state":61,"./internal/streams/stream":62,"_process":44,"buffer":12,"inherits":29,"util-deprecate":71}],55:[function(require,module,exports){
(function (process){
'use strict';
var _Object$setPrototypeO;
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
var finished = require('./end-of-stream');
var kLastResolve = Symbol('lastResolve');
var kLastReject = Symbol('lastReject');
var kError = Symbol('error');
var kEnded = Symbol('ended');
var kLastPromise = Symbol('lastPromise');
var kHandlePromise = Symbol('handlePromise');
var kStream = Symbol('stream');
function createIterResult(value, done) {
return {
value: value,
done: done
};
}
function readAndResolve(iter) {
var resolve = iter[kLastResolve];
if (resolve !== null) {
var data = iter[kStream].read(); // we defer if data is null
// we can be expecting either 'end' or
// 'error'
if (data !== null) {
iter[kLastPromise] = null;
iter[kLastResolve] = null;
iter[kLastReject] = null;
resolve(createIterResult(data, false));
}
}
}
function onReadable(iter) {
// we wait for the next tick, because it might
// emit an error with process.nextTick
process.nextTick(readAndResolve, iter);
}
function wrapForNext(lastPromise, iter) {
return function (resolve, reject) {
lastPromise.then(function () {
if (iter[kEnded]) {
resolve(createIterResult(undefined, true));
return;
}
iter[kHandlePromise](resolve, reject);
}, reject);
};
}
var AsyncIteratorPrototype = Object.getPrototypeOf(function () {});
var ReadableStreamAsyncIteratorPrototype = Object.setPrototypeOf((_Object$setPrototypeO = {
get stream() {
return this[kStream];
},
next: function next() {
var _this = this;
// if we have detected an error in the meanwhile
// reject straight away
var error = this[kError];
if (error !== null) {
return Promise.reject(error);
}
if (this[kEnded]) {
return Promise.resolve(createIterResult(undefined, true));
}
if (this[kStream].destroyed) {
// We need to defer via nextTick because if .destroy(err) is
// called, the error will be emitted via nextTick, and
// we cannot guarantee that there is no error lingering around
// waiting to be emitted.
return new Promise(function (resolve, reject) {
process.nextTick(function () {
if (_this[kError]) {
reject(_this[kError]);
} else {
resolve(createIterResult(undefined, true));
}
});
});
} // if we have multiple next() calls
// we will wait for the previous Promise to finish
// this logic is optimized to support for await loops,
// where next() is only called once at a time
var lastPromise = this[kLastPromise];
var promise;
if (lastPromise) {
promise = new Promise(wrapForNext(lastPromise, this));
} else {
// fast path needed to support multiple this.push()
// without triggering the next() queue
var data = this[kStream].read();
if (data !== null) {
return Promise.resolve(createIterResult(data, false));
}
promise = new Promise(this[kHandlePromise]);
}
this[kLastPromise] = promise;
return promise;
}
}, _defineProperty(_Object$setPrototypeO, Symbol.asyncIterator, function () {
return this;
}), _defineProperty(_Object$setPrototypeO, "return", function _return() {
var _this2 = this;
// destroy(err, cb) is a private API
// we can guarantee we have that here, because we control the
// Readable class this is attached to
return new Promise(function (resolve, reject) {
_this2[kStream].destroy(null, function (err) {
if (err) {
reject(err);
return;
}
resolve(createIterResult(undefined, true));
});
});
}), _Object$setPrototypeO), AsyncIteratorPrototype);
var createReadableStreamAsyncIterator = function createReadableStreamAsyncIterator(stream) {
var _Object$create;
var iterator = Object.create(ReadableStreamAsyncIteratorPrototype, (_Object$create = {}, _defineProperty(_Object$create, kStream, {
value: stream,
writable: true
}), _defineProperty(_Object$create, kLastResolve, {
value: null,
writable: true
}), _defineProperty(_Object$create, kLastReject, {
value: null,
writable: true
}), _defineProperty(_Object$create, kError, {
value: null,
writable: true
}), _defineProperty(_Object$create, kEnded, {
value: stream._readableState.endEmitted,
writable: true
}), _defineProperty(_Object$create, kHandlePromise, {
value: function value(resolve, reject) {
var data = iterator[kStream].read();
if (data) {
iterator[kLastPromise] = null;
iterator[kLastResolve] = null;
iterator[kLastReject] = null;
resolve(createIterResult(data, false));
} else {
iterator[kLastResolve] = resolve;
iterator[kLastReject] = reject;
}
},
writable: true
}), _Object$create));
iterator[kLastPromise] = null;
finished(stream, function (err) {
if (err && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {
var reject = iterator[kLastReject]; // reject if we are waiting for data in the Promise
// returned by next() and store the error
if (reject !== null) {
iterator[kLastPromise] = null;
iterator[kLastResolve] = null;
iterator[kLastReject] = null;
reject(err);
}
iterator[kError] = err;
return;
}
var resolve = iterator[kLastResolve];
if (resolve !== null) {
iterator[kLastPromise] = null;
iterator[kLastResolve] = null;
iterator[kLastReject] = null;
resolve(createIterResult(undefined, true));
}
iterator[kEnded] = true;
});
stream.on('readable', onReadable.bind(null, iterator));
return iterator;
};
module.exports = createReadableStreamAsyncIterator;
}).call(this,require('_process'))
},{"./end-of-stream":58,"_process":44}],56:[function(require,module,exports){
'use strict';
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
var _require = require('buffer'),
Buffer = _require.Buffer;
var _require2 = require('util'),
inspect = _require2.inspect;
var custom = inspect && inspect.custom || 'inspect';
function copyBuffer(src, target, offset) {
Buffer.prototype.copy.call(src, target, offset);
}
module.exports =
/*#__PURE__*/
function () {
function BufferList() {
_classCallCheck(this, BufferList);
this.head = null;
this.tail = null;
this.length = 0;
}
_createClass(BufferList, [{
key: "push",
value: 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;
}
}, {
key: "unshift",
value: function unshift(v) {
var entry = {
data: v,
next: this.head
};
if (this.length === 0) this.tail = entry;
this.head = entry;
++this.length;
}
}, {
key: "shift",
value: 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;
}
}, {
key: "clear",
value: function clear() {
this.head = this.tail = null;
this.length = 0;
}
}, {
key: "join",
value: 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;
}
}, {
key: "concat",
value: function concat(n) {
if (this.length === 0) return Buffer.alloc(0);
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;
} // Consumes a specified amount of bytes or characters from the buffered data.
}, {
key: "consume",
value: function consume(n, hasStrings) {
var ret;
if (n < this.head.data.length) {
// `slice` is the same for buffers and strings.
ret = this.head.data.slice(0, n);
this.head.data = this.head.data.slice(n);
} else if (n === this.head.data.length) {
// First chunk is a perfect match.
ret = this.shift();
} else {
// Result spans more than one buffer.
ret = hasStrings ? this._getString(n) : this._getBuffer(n);
}
return ret;
}
}, {
key: "first",
value: function first() {
return this.head.data;
} // Consumes a specified amount of characters from the buffered data.
}, {
key: "_getString",
value: function _getString(n) {
var p = this.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) this.head = p.next;else this.head = this.tail = null;
} else {
this.head = p;
p.data = str.slice(nb);
}
break;
}
++c;
}
this.length -= c;
return ret;
} // Consumes a specified amount of bytes from the buffered data.
}, {
key: "_getBuffer",
value: function _getBuffer(n) {
var ret = Buffer.allocUnsafe(n);
var p = this.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) this.head = p.next;else this.head = this.tail = null;
} else {
this.head = p;
p.data = buf.slice(nb);
}
break;
}
++c;
}
this.length -= c;
return ret;
} // Make sure the linked list only shows the minimal necessary information.
}, {
key: custom,
value: function value(_, options) {
return inspect(this, _objectSpread({}, options, {
// Only inspect one level.
depth: 0,
// It should not recurse.
customInspect: false
}));
}
}]);
return BufferList;
}();
},{"buffer":12,"util":11}],57:[function(require,module,exports){
(function (process){
'use strict'; // 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) {
if (!this._writableState) {
process.nextTick(emitErrorNT, this, err);
} else if (!this._writableState.errorEmitted) {
this._writableState.errorEmitted = true;
process.nextTick(emitErrorNT, this, err);
}
}
return this;
} // 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) {
if (!_this._writableState) {
process.nextTick(emitErrorAndCloseNT, _this, err);
} else if (!_this._writableState.errorEmitted) {
_this._writableState.errorEmitted = true;
process.nextTick(emitErrorAndCloseNT, _this, err);
} else {
process.nextTick(emitCloseNT, _this);
}
} else if (cb) {
process.nextTick(emitCloseNT, _this);
cb(err);
} else {
process.nextTick(emitCloseNT, _this);
}
});
return this;
}
function emitErrorAndCloseNT(self, err) {
emitErrorNT(self, err);
emitCloseNT(self);
}
function emitCloseNT(self) {
if (self._writableState && !self._writableState.emitClose) return;
if (self._readableState && !self._readableState.emitClose) return;
self.emit('close');
}
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.finalCalled = false;
this._writableState.prefinished = false;
this._writableState.finished = false;
this._writableState.errorEmitted = false;
}
}
function emitErrorNT(self, err) {
self.emit('error', err);
}
function errorOrDestroy(stream, err) {
// We have tests that rely on errors being emitted
// in the same tick, so changing this is semver major.
// For now when you opt-in to autoDestroy we allow
// the error to be emitted nextTick. In a future
// semver major update we should change the default to this.
var rState = stream._readableState;
var wState = stream._writableState;
if (rState && rState.autoDestroy || wState && wState.autoDestroy) stream.destroy(err);else stream.emit('error', err);
}
module.exports = {
destroy: destroy,
undestroy: undestroy,
errorOrDestroy: errorOrDestroy
};
}).call(this,require('_process'))
},{"_process":44}],58:[function(require,module,exports){
// Ported from https://github.com/mafintosh/end-of-stream with
// permission from the author, Mathias Buus (@mafintosh).
'use strict';
var ERR_STREAM_PREMATURE_CLOSE = require('../../../errors').codes.ERR_STREAM_PREMATURE_CLOSE;
function once(callback) {
var called = false;
return function () {
if (called) return;
called = true;
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
callback.apply(this, args);
};
}
function noop() {}
function isRequest(stream) {
return stream.setHeader && typeof stream.abort === 'function';
}
function eos(stream, opts, callback) {
if (typeof opts === 'function') return eos(stream, null, opts);
if (!opts) opts = {};
callback = once(callback || noop);
var readable = opts.readable || opts.readable !== false && stream.readable;
var writable = opts.writable || opts.writable !== false && stream.writable;
var onlegacyfinish = function onlegacyfinish() {
if (!stream.writable) onfinish();
};
var writableEnded = stream._writableState && stream._writableState.finished;
var onfinish = function onfinish() {
writable = false;
writableEnded = true;
if (!readable) callback.call(stream);
};
var readableEnded = stream._readableState && stream._readableState.endEmitted;
var onend = function onend() {
readable = false;
readableEnded = true;
if (!writable) callback.call(stream);
};
var onerror = function onerror(err) {
callback.call(stream, err);
};
var onclose = function onclose() {
var err;
if (readable && !readableEnded) {
if (!stream._readableState || !stream._readableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
return callback.call(stream, err);
}
if (writable && !writableEnded) {
if (!stream._writableState || !stream._writableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
return callback.call(stream, err);
}
};
var onrequest = function onrequest() {
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 && !stream._writableState) {
// legacy streams
stream.on('end', onlegacyfinish);
stream.on('close', onlegacyfinish);
}
stream.on('end', onend);
stream.on('finish', onfinish);
if (opts.error !== false) stream.on('error', onerror);
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('end', onend);
stream.removeListener('error', onerror);
stream.removeListener('close', onclose);
};
}
module.exports = eos;
},{"../../../errors":49}],59:[function(require,module,exports){
module.exports = function () {
throw new Error('Readable.from is not available in the browser')
};
},{}],60:[function(require,module,exports){
// Ported from https://github.com/mafintosh/pump with
// permission from the author, Mathias Buus (@mafintosh).
'use strict';
var eos;
function once(callback) {
var called = false;
return function () {
if (called) return;
called = true;
callback.apply(void 0, arguments);
};
}
var _require$codes = require('../../../errors').codes,
ERR_MISSING_ARGS = _require$codes.ERR_MISSING_ARGS,
ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED;
function noop(err) {
// Rethrow the error if it exists to avoid swallowing it
if (err) throw err;
}
function isRequest(stream) {
return stream.setHeader && typeof stream.abort === 'function';
}
function destroyer(stream, reading, writing, callback) {
callback = once(callback);
var closed = false;
stream.on('close', function () {
closed = true;
});
if (eos === undefined) eos = require('./end-of-stream');
eos(stream, {
readable: reading,
writable: writing
}, function (err) {
if (err) return callback(err);
closed = true;
callback();
});
var destroyed = false;
return function (err) {
if (closed) return;
if (destroyed) return;
destroyed = true; // request.destroy just do .end - .abort is what we want
if (isRequest(stream)) return stream.abort();
if (typeof stream.destroy === 'function') return stream.destroy();
callback(err || new ERR_STREAM_DESTROYED('pipe'));
};
}
function call(fn) {
fn();
}
function pipe(from, to) {
return from.pipe(to);
}
function popCallback(streams) {
if (!streams.length) return noop;
if (typeof streams[streams.length - 1] !== 'function') return noop;
return streams.pop();
}
function pipeline() {
for (var _len = arguments.length, streams = new Array(_len), _key = 0; _key < _len; _key++) {
streams[_key] = arguments[_key];
}
var callback = popCallback(streams);
if (Array.isArray(streams[0])) streams = streams[0];
if (streams.length < 2) {
throw new ERR_MISSING_ARGS('streams');
}
var error;
var destroys = streams.map(function (stream, i) {
var reading = i < streams.length - 1;
var writing = i > 0;
return destroyer(stream, reading, writing, function (err) {
if (!error) error = err;
if (err) destroys.forEach(call);
if (reading) return;
destroys.forEach(call);
callback(error);
});
});
return streams.reduce(pipe);
}
module.exports = pipeline;
},{"../../../errors":49,"./end-of-stream":58}],61:[function(require,module,exports){
'use strict';
var ERR_INVALID_OPT_VALUE = require('../../../errors').codes.ERR_INVALID_OPT_VALUE;
function highWaterMarkFrom(options, isDuplex, duplexKey) {
return options.highWaterMark != null ? options.highWaterMark : isDuplex ? options[duplexKey] : null;
}
function getHighWaterMark(state, options, duplexKey, isDuplex) {
var hwm = highWaterMarkFrom(options, isDuplex, duplexKey);
if (hwm != null) {
if (!(isFinite(hwm) && Math.floor(hwm) === hwm) || hwm < 0) {
var name = isDuplex ? duplexKey : 'highWaterMark';
throw new ERR_INVALID_OPT_VALUE(name, hwm);
}
return Math.floor(hwm);
} // Default value
return state.objectMode ? 16 : 16 * 1024;
}
module.exports = {
getHighWaterMark: getHighWaterMark
};
},{"../../../errors":49}],62:[function(require,module,exports){
arguments[4][24][0].apply(exports,arguments)
},{"dup":24,"events":27}],63:[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');
exports.finished = require('./lib/internal/streams/end-of-stream.js');
exports.pipeline = require('./lib/internal/streams/pipeline.js');
},{"./lib/_stream_duplex.js":50,"./lib/_stream_passthrough.js":51,"./lib/_stream_readable.js":52,"./lib/_stream_transform.js":53,"./lib/_stream_writable.js":54,"./lib/internal/streams/end-of-stream.js":58,"./lib/internal/streams/pipeline.js":60}],64:[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;
},{}],65:[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}],66:[function(require,module,exports){
module.exports = shift
function shift (stream) {
var rs = stream._readableState
if (!rs) return null
return (rs.objectMode || typeof stream._duplexState === 'number') ? 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
}
},{}],67:[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';
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/
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. If an invalid byte is detected, -2 is returned.
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 byte >> 6 === 0x02 ? -1 : -2;
}
// 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 || nb === -2) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 2;
return nb;
}
if (--j < i || nb === -2) 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
// a single UTF-8 replacement character ('\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';
}
if (self.lastNeed > 1 && buf.length > 1) {
if ((buf[1] & 0xC0) !== 0x80) {
self.lastNeed = 1;
return '\ufffd';
}
if (self.lastNeed > 2 && buf.length > 2) {
if ((buf[2] & 0xC0) !== 0x80) {
self.lastNeed = 2;
return '\ufffd';
}
}
}
}
// 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 is added when ending on a partial
// character.
function utf8End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + '\ufffd';
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":65}],68:[function(require,module,exports){
(function (setImmediate,clearImmediate){
var nextTick = require('process/browser.js').nextTick;
var apply = Function.prototype.apply;
var slice = Array.prototype.slice;
var immediateIds = {};
var nextImmediateId = 0;
// DOM APIs, for completeness
exports.setTimeout = function() {
return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
};
exports.setInterval = function() {
return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) { timeout.close(); };
function Timeout(id, clearFn) {
this._id = id;
this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
this._clearFn.call(window, this._id);
};
// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
clearTimeout(item._idleTimeoutId);
item._idleTimeout = msecs;
};
exports.unenroll = function(item) {
clearTimeout(item._idleTimeoutId);
item._idleTimeout = -1;
};
exports._unrefActive = exports.active = function(item) {
clearTimeout(item._idleTimeoutId);
var msecs = item._idleTimeout;
if (msecs >= 0) {
item._idleTimeoutId = setTimeout(function onTimeout() {
if (item._onTimeout)
item._onTimeout();
}, msecs);
}
};
// That's not how node.js implements it but the exposed api is the same.
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
var id = nextImmediateId++;
var args = arguments.length < 2 ? false : slice.call(arguments, 1);
immediateIds[id] = true;
nextTick(function onNextTick() {
if (immediateIds[id]) {
// fn.call() is faster so we optimize for the common use-case
// @see http://jsperf.com/call-apply-segu
if (args) {
fn.apply(null, args);
} else {
fn.call(null);
}
// Prevent ids from leaking
exports.clearImmediate(id);
}
});
return id;
};
exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
delete immediateIds[id];
};
}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
},{"process/browser.js":44,"timers":68}],69:[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":70,"punycode":45,"querystring":48}],70:[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;
}
};
},{}],71:[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 : {})
},{}],72:[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
}
}
},{}],73:[function(require,module,exports){
'use strict';
module.exports = function () {
throw new Error(
'ws does not work in the browser. Browser clients must use the native ' +
'WebSocket object'
);
};
},{}],74:[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
}
},{}]},{},[9])(9)
});
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