bot18
Version:
A high-frequency cryptocurrency trading bot by Zenbot creator @carlos8f
1,788 lines (1,526 loc) • 732 kB
HTML
<!doctype html><html><head><meta charset="utf-8"></head><body><pre id="__testling_output"></pre><script>(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
(function (process){var xws = require('xhr-write-stream');
var Stream = require('stream');
var json = typeof JSON === 'object' ? JSON : require('jsonify');
var inspect = require('object-inspect');
process.on = function () {};
var ws = xws('/__testling/sock');
ws.write(window.location.hash + '\n');
function createChannel (writeListen) {
var c = new Stream;
c.writable = true;
c.write = function (buf) {
if (writeListen) writeListen(buf);
return ws.write(String(buf));
};
c.destroy = function () {};
c.end = function (buf) {
c.emit('close');
};
return c;
}
var lastTestId = 0;
process.stdout = createChannel(function (buf) {
var m = /^(?:not )? ok (\d+)/.exec(String(buf));
if (m) lastTestId = m[1];
});
process.stderr = createChannel();
process.stdout.on('close', function () { ws.end() });
process.exit = function () { ws.end() };
var oldError = window.onerror;
window.onerror = function (err, url, lineNum) {
var type = err && err.name || 'Error';
process.stdout.write(
'not ok ' + (lastTestId + 1) + ' ' + type + ': '
+ (err && err.message || String(err))
+ (lineNum ? ' on line ' + lineNum : '')
+ '\n'
);
if (err && err.stack) {
var lines = String(err.stack).split('\n');
var xs = [];
for (var i = 0; i < lines.length; i++) {
xs.push(' ' + lines[i]);
}
process.stdout.write([
' ---',
' stack:',
xs.join('\n'),
' ...'
].join('\n') + '\n');
}
ws.end();
if (typeof oldError === 'function') {
return oldError.apply(this, arguments);
}
};
window.__testlingErrorHandler = onerror;
if (typeof console === 'undefined') {
console = {};
}
var params = (function () {
var unesc = typeof decodeURIComponent !== 'undefined'
? decodeURIComponent : unescape
;
var parts = (window.location.search || '').replace(/^\?/, '').split('&');
var opts = {};
for (var i = 0; i < parts.length; i++) {
var x = parts[i].split('=');
opts[unesc(x[0])] = unesc(x[1]);
}
return opts;
})();
var originalLog = console.log;
console.log = function (msg) {
var index = 1;
var args = arguments;
if (typeof msg === 'string') {
msg = msg.replace(/(^|[^%])%[sd]/g, function (_, s) {
return s + args[index++];
});
}
else msg = inspect(msg);
for (var i = index; i < args.length; i++) {
msg += ' ' + inspect(args[i]);
}
if (params.show === undefined || parseBoolean(params.show)) {
var elem = document.getElementById('__testling_output');
if (elem) {
var txt = document.createTextNode(msg + '\n');
elem.appendChild(txt);
}
}
process.stdout.write(msg + '\n');
if (typeof originalLog === 'function') {
return originalLog.apply(this, arguments);
}
else if (originalLog) return originalLog(arguments[0]);
};
window.__testlingConsole = console;
function parseBoolean (x) {
if (x === 'false' || x === '0') return false;
return true;
}
}).call(this,require("/home/substack/projects/testling/node_modules/browserify/node_modules/insert-module-globals/node_modules/process/browser.js"))
},{"/home/substack/projects/testling/node_modules/browserify/node_modules/insert-module-globals/node_modules/process/browser.js":8,"jsonify":27,"object-inspect":30,"stream":17,"xhr-write-stream":31}],2:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
function EventEmitter() {
this._events = this._events || {};
this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;
// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
if (!isNumber(n) || n < 0 || isNaN(n))
throw TypeError('n must be a positive number');
this._maxListeners = n;
return this;
};
EventEmitter.prototype.emit = function(type) {
var er, handler, len, args, i, listeners;
if (!this._events)
this._events = {};
// If there is no 'error' event listener then throw.
if (type === 'error') {
if (!this._events.error ||
(isObject(this._events.error) && !this._events.error.length)) {
er = arguments[1];
if (er instanceof Error) {
throw er; // Unhandled 'error' event
} else {
throw TypeError('Uncaught, unspecified "error" event.');
}
return false;
}
}
handler = this._events[type];
if (isUndefined(handler))
return false;
if (isFunction(handler)) {
switch (arguments.length) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
default:
len = arguments.length;
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
handler.apply(this, args);
}
} else if (isObject(handler)) {
len = arguments.length;
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
listeners = handler.slice();
len = listeners.length;
for (i = 0; i < len; i++)
listeners[i].apply(this, args);
}
return true;
};
EventEmitter.prototype.addListener = function(type, listener) {
var m;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events)
this._events = {};
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (this._events.newListener)
this.emit('newListener', type,
isFunction(listener.listener) ?
listener.listener : listener);
if (!this._events[type])
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
else if (isObject(this._events[type]))
// If we've already got an array, just append.
this._events[type].push(listener);
else
// Adding the second element, need to change to array.
this._events[type] = [this._events[type], listener];
// Check for listener leak
if (isObject(this._events[type]) && !this._events[type].warned) {
var m;
if (!isUndefined(this._maxListeners)) {
m = this._maxListeners;
} else {
m = EventEmitter.defaultMaxListeners;
}
if (m && m > 0 && this._events[type].length > m) {
this._events[type].warned = true;
console.error('(node) warning: possible EventEmitter memory ' +
'leak detected. %d listeners added. ' +
'Use emitter.setMaxListeners() to increase limit.',
this._events[type].length);
console.trace();
}
}
return this;
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function(type, listener) {
if (!isFunction(listener))
throw TypeError('listener must be a function');
var fired = false;
function g() {
this.removeListener(type, g);
if (!fired) {
fired = true;
listener.apply(this, arguments);
}
}
g.listener = listener;
this.on(type, g);
return this;
};
// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
var list, position, length, i;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events || !this._events[type])
return this;
list = this._events[type];
length = list.length;
position = -1;
if (list === listener ||
(isFunction(list.listener) && list.listener === listener)) {
delete this._events[type];
if (this._events.removeListener)
this.emit('removeListener', type, listener);
} else if (isObject(list)) {
for (i = length; i-- > 0;) {
if (list[i] === listener ||
(list[i].listener && list[i].listener === listener)) {
position = i;
break;
}
}
if (position < 0)
return this;
if (list.length === 1) {
list.length = 0;
delete this._events[type];
} else {
list.splice(position, 1);
}
if (this._events.removeListener)
this.emit('removeListener', type, listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners = function(type) {
var key, listeners;
if (!this._events)
return this;
// not listening for removeListener, no need to emit
if (!this._events.removeListener) {
if (arguments.length === 0)
this._events = {};
else if (this._events[type])
delete this._events[type];
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
for (key in this._events) {
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = {};
return this;
}
listeners = this._events[type];
if (isFunction(listeners)) {
this.removeListener(type, listeners);
} else {
// LIFO order
while (listeners.length)
this.removeListener(type, listeners[listeners.length - 1]);
}
delete this._events[type];
return this;
};
EventEmitter.prototype.listeners = function(type) {
var ret;
if (!this._events || !this._events[type])
ret = [];
else if (isFunction(this._events[type]))
ret = [this._events[type]];
else
ret = this._events[type].slice();
return ret;
};
EventEmitter.listenerCount = function(emitter, type) {
var ret;
if (!emitter._events || !emitter._events[type])
ret = 0;
else if (isFunction(emitter._events[type]))
ret = 1;
else
ret = emitter._events[type].length;
return ret;
};
function isFunction(arg) {
return typeof arg === 'function';
}
function isNumber(arg) {
return typeof arg === 'number';
}
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
function isUndefined(arg) {
return arg === void 0;
}
},{}],3:[function(require,module,exports){
var http = module.exports;
var EventEmitter = require('events').EventEmitter;
var Request = require('./lib/request');
var url = require('url')
http.request = function (params, cb) {
if (typeof params === 'string') {
params = url.parse(params)
}
if (!params) params = {};
if (!params.host && !params.port) {
params.port = parseInt(window.location.port, 10);
}
if (!params.host && params.hostname) {
params.host = params.hostname;
}
if (!params.scheme) params.scheme = window.location.protocol.split(':')[0];
if (!params.host) {
params.host = window.location.hostname || window.location.host;
}
if (/:/.test(params.host)) {
if (!params.port) {
params.port = params.host.split(':')[1];
}
params.host = params.host.split(':')[0];
}
if (!params.port) params.port = params.scheme == 'https' ? 443 : 80;
var req = new Request(new xhrHttp, params);
if (cb) req.on('response', cb);
return req;
};
http.get = function (params, cb) {
params.method = 'GET';
var req = http.request(params, cb);
req.end();
return req;
};
http.Agent = function () {};
http.Agent.defaultMaxSockets = 4;
var xhrHttp = (function () {
if (typeof window === 'undefined') {
throw new Error('no window object present');
}
else if (window.XMLHttpRequest) {
return window.XMLHttpRequest;
}
else if (window.ActiveXObject) {
var axs = [
'Msxml2.XMLHTTP.6.0',
'Msxml2.XMLHTTP.3.0',
'Microsoft.XMLHTTP'
];
for (var i = 0; i < axs.length; i++) {
try {
var ax = new(window.ActiveXObject)(axs[i]);
return function () {
if (ax) {
var ax_ = ax;
ax = null;
return ax_;
}
else {
return new(window.ActiveXObject)(axs[i]);
}
};
}
catch (e) {}
}
throw new Error('ajax not supported in this browser')
}
else {
throw new Error('ajax not supported in this browser');
}
})();
},{"./lib/request":4,"events":2,"url":24}],4:[function(require,module,exports){
var Stream = require('stream');
var Response = require('./response');
var Base64 = require('Base64');
var inherits = require('inherits');
var Request = module.exports = function (xhr, params) {
var self = this;
self.writable = true;
self.xhr = xhr;
self.body = [];
self.uri = (params.scheme || 'http') + '://'
+ params.host
+ (params.port ? ':' + params.port : '')
+ (params.path || '/')
;
try { xhr.withCredentials = true }
catch (e) {}
xhr.open(
params.method || 'GET',
self.uri,
true
);
if (params.headers) {
var keys = objectKeys(params.headers);
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
if (!self.isSafeRequestHeader(key)) continue;
var value = params.headers[key];
if (isArray(value)) {
for (var j = 0; j < value.length; j++) {
xhr.setRequestHeader(key, value[j]);
}
}
else xhr.setRequestHeader(key, value)
}
}
if (params.auth) {
//basic auth
this.setHeader('Authorization', 'Basic ' + Base64.btoa(params.auth));
}
var res = new Response;
res.on('close', function () {
self.emit('close');
});
res.on('ready', function () {
self.emit('response', res);
});
xhr.onreadystatechange = function () {
res.handle(xhr);
};
};
inherits(Request, Stream);
Request.prototype.setHeader = function (key, value) {
if (isArray(value)) {
for (var i = 0; i < value.length; i++) {
this.xhr.setRequestHeader(key, value[i]);
}
}
else {
this.xhr.setRequestHeader(key, value);
}
};
Request.prototype.write = function (s) {
this.body.push(s);
};
Request.prototype.destroy = function (s) {
this.xhr.abort();
this.emit('close');
};
Request.prototype.end = function (s) {
if (s !== undefined) this.body.push(s);
if (this.body.length === 0) {
this.xhr.send('');
}
else if (typeof this.body[0] === 'string') {
this.xhr.send(this.body.join(''));
}
else if (isArray(this.body[0])) {
var body = [];
for (var i = 0; i < this.body.length; i++) {
body.push.apply(body, this.body[i]);
}
this.xhr.send(body);
}
else if (/Array/.test(Object.prototype.toString.call(this.body[0]))) {
var len = 0;
for (var i = 0; i < this.body.length; i++) {
len += this.body[i].length;
}
var body = new(this.body[0].constructor)(len);
var k = 0;
for (var i = 0; i < this.body.length; i++) {
var b = this.body[i];
for (var j = 0; j < b.length; j++) {
body[k++] = b[j];
}
}
this.xhr.send(body);
}
else {
var body = '';
for (var i = 0; i < this.body.length; i++) {
body += this.body[i].toString();
}
this.xhr.send(body);
}
};
// Taken from http://dxr.mozilla.org/mozilla/mozilla-central/content/base/src/nsXMLHttpRequest.cpp.html
Request.unsafeHeaders = [
"accept-charset",
"accept-encoding",
"access-control-request-headers",
"access-control-request-method",
"connection",
"content-length",
"cookie",
"cookie2",
"content-transfer-encoding",
"date",
"expect",
"host",
"keep-alive",
"origin",
"referer",
"te",
"trailer",
"transfer-encoding",
"upgrade",
"user-agent",
"via"
];
Request.prototype.isSafeRequestHeader = function (headerName) {
if (!headerName) return false;
return indexOf(Request.unsafeHeaders, headerName.toLowerCase()) === -1;
};
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) keys.push(key);
return keys;
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
var indexOf = function (xs, x) {
if (xs.indexOf) return xs.indexOf(x);
for (var i = 0; i < xs.length; i++) {
if (xs[i] === x) return i;
}
return -1;
};
},{"./response":5,"Base64":6,"inherits":7,"stream":17}],5:[function(require,module,exports){
var Stream = require('stream');
var util = require('util');
var Response = module.exports = function (res) {
this.offset = 0;
this.readable = true;
};
util.inherits(Response, Stream);
var capable = {
streaming : true,
status2 : true
};
function parseHeaders (res) {
var lines = res.getAllResponseHeaders().split(/\r?\n/);
var headers = {};
for (var i = 0; i < lines.length; i++) {
var line = lines[i];
if (line === '') continue;
var m = line.match(/^([^:]+):\s*(.*)/);
if (m) {
var key = m[1].toLowerCase(), value = m[2];
if (headers[key] !== undefined) {
if (isArray(headers[key])) {
headers[key].push(value);
}
else {
headers[key] = [ headers[key], value ];
}
}
else {
headers[key] = value;
}
}
else {
headers[line] = true;
}
}
return headers;
}
Response.prototype.getResponse = function (xhr) {
var respType = String(xhr.responseType).toLowerCase();
if (respType === 'blob') return xhr.responseBlob || xhr.response;
if (respType === 'arraybuffer') return xhr.response;
return xhr.responseText;
}
Response.prototype.getHeader = function (key) {
return this.headers[key.toLowerCase()];
};
Response.prototype.handle = function (res) {
if (res.readyState === 2 && capable.status2) {
try {
this.statusCode = res.status;
this.headers = parseHeaders(res);
}
catch (err) {
capable.status2 = false;
}
if (capable.status2) {
this.emit('ready');
}
}
else if (capable.streaming && res.readyState === 3) {
try {
if (!this.statusCode) {
this.statusCode = res.status;
this.headers = parseHeaders(res);
this.emit('ready');
}
}
catch (err) {}
try {
this._emitData(res);
}
catch (err) {
capable.streaming = false;
}
}
else if (res.readyState === 4) {
if (!this.statusCode) {
this.statusCode = res.status;
this.emit('ready');
}
this._emitData(res);
if (res.error) {
this.emit('error', this.getResponse(res));
}
else this.emit('end');
this.emit('close');
}
};
Response.prototype._emitData = function (res) {
var respBody = this.getResponse(res);
if (respBody.toString().match(/ArrayBuffer/)) {
this.emit('data', new Uint8Array(respBody, this.offset));
this.offset = respBody.byteLength;
return;
}
if (respBody.length > this.offset) {
this.emit('data', respBody.slice(this.offset));
this.offset = respBody.length;
}
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
},{"stream":17,"util":26}],6:[function(require,module,exports){
;(function () {
var object = typeof exports != 'undefined' ? exports : this; // #8: web workers
var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
function InvalidCharacterError(message) {
this.message = message;
}
InvalidCharacterError.prototype = new Error;
InvalidCharacterError.prototype.name = 'InvalidCharacterError';
// encoder
// [https://gist.github.com/999166] by [https://github.com/nignag]
object.btoa || (
object.btoa = function (input) {
for (
// initialize result and counter
var block, charCode, idx = 0, map = chars, output = '';
// if the next input index does not exist:
// change the mapping table to "="
// check if d has no fractional digits
input.charAt(idx | 0) || (map = '=', idx % 1);
// "8 - idx % 1 * 8" generates the sequence 2, 4, 6, 8
output += map.charAt(63 & block >> 8 - idx % 1 * 8)
) {
charCode = input.charCodeAt(idx += 3/4);
if (charCode > 0xFF) {
throw new InvalidCharacterError("'btoa' failed: The string to be encoded contains characters outside of the Latin1 range.");
}
block = block << 8 | charCode;
}
return output;
});
// decoder
// [https://gist.github.com/1020396] by [https://github.com/atk]
object.atob || (
object.atob = function (input) {
input = input.replace(/=+$/, '')
if (input.length % 4 == 1) {
throw new InvalidCharacterError("'atob' failed: The string to be decoded is not correctly encoded.");
}
for (
// initialize result and counters
var bc = 0, bs, buffer, idx = 0, output = '';
// get next character
buffer = input.charAt(idx++);
// character found in table? initialize bit storage and add its ascii value;
~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer,
// and if not first of each 4 characters,
// convert the first 8 bits to one ascii character
bc++ % 4) ? output += String.fromCharCode(255 & bs >> (-2 * bc & 6)) : 0
) {
// try to find character in table (0-63, not found => -1)
buffer = chars.indexOf(buffer);
}
return output;
});
}());
},{}],7:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
},{}],8:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
process.nextTick = (function () {
var canSetImmediate = typeof window !== 'undefined'
&& window.setImmediate;
var canPost = typeof window !== 'undefined'
&& window.postMessage && window.addEventListener
;
if (canSetImmediate) {
return function (f) { return window.setImmediate(f) };
}
if (canPost) {
var queue = [];
window.addEventListener('message', function (ev) {
var source = ev.source;
if ((source === window || source === null) && ev.data === 'process-tick') {
ev.stopPropagation();
if (queue.length > 0) {
var fn = queue.shift();
fn();
}
}
}, true);
return function nextTick(fn) {
queue.push(fn);
window.postMessage('process-tick', '*');
};
}
return function nextTick(fn) {
setTimeout(fn, 0);
};
})();
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.binding = function (name) {
throw new Error('process.binding is not supported');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],9:[function(require,module,exports){
var base64 = require('base64-js')
var ieee754 = require('ieee754')
exports.Buffer = Buffer
exports.SlowBuffer = Buffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192
/**
* If `Buffer._useTypedArrays`:
* === true Use Uint8Array implementation (fastest)
* === false Use Object implementation (compatible down to IE6)
*/
Buffer._useTypedArrays = (function () {
// Detect if browser supports Typed Arrays. Supported browsers are IE 10+,
// Firefox 4+, Chrome 7+, Safari 5.1+, Opera 11.6+, iOS 4.2+.
if (typeof Uint8Array === 'undefined' || typeof ArrayBuffer === 'undefined')
return false
// Does the browser support adding properties to `Uint8Array` instances? If
// not, then that's the same as no `Uint8Array` support. We need to be able to
// add all the node Buffer API methods.
// Relevant Firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=695438
try {
var arr = new Uint8Array(0)
arr.foo = function () { return 42 }
return 42 === arr.foo() &&
typeof arr.subarray === 'function' // Chrome 9-10 lack `subarray`
} catch (e) {
return false
}
})()
/**
* Class: Buffer
* =============
*
* The Buffer constructor returns instances of `Uint8Array` that are augmented
* with function properties for all the node `Buffer` API functions. We use
* `Uint8Array` so that square bracket notation works as expected -- it returns
* a single octet.
*
* By augmenting the instances, we can avoid modifying the `Uint8Array`
* prototype.
*/
function Buffer (subject, encoding, noZero) {
if (!(this instanceof Buffer))
return new Buffer(subject, encoding, noZero)
var type = typeof subject
// Workaround: node's base64 implementation allows for non-padded strings
// while base64-js does not.
if (encoding === 'base64' && type === 'string') {
subject = stringtrim(subject)
while (subject.length % 4 !== 0) {
subject = subject + '='
}
}
// Find the length
var length
if (type === 'number')
length = coerce(subject)
else if (type === 'string')
length = Buffer.byteLength(subject, encoding)
else if (type === 'object')
length = coerce(subject.length) // Assume object is an array
else
throw new Error('First argument needs to be a number, array or string.')
var buf
if (Buffer._useTypedArrays) {
// Preferred: Return an augmented `Uint8Array` instance for best performance
buf = augment(new Uint8Array(length))
} else {
// Fallback: Return THIS instance of Buffer (created by `new`)
buf = this
buf.length = length
buf._isBuffer = true
}
var i
if (Buffer._useTypedArrays && typeof Uint8Array === 'function' &&
subject instanceof Uint8Array) {
// Speed optimization -- use set if we're copying from a Uint8Array
buf._set(subject)
} else if (isArrayish(subject)) {
// Treat array-ish objects as a byte array
for (i = 0; i < length; i++) {
if (Buffer.isBuffer(subject))
buf[i] = subject.readUInt8(i)
else
buf[i] = subject[i]
}
} else if (type === 'string') {
buf.write(subject, 0, encoding)
} else if (type === 'number' && !Buffer._useTypedArrays && !noZero) {
for (i = 0; i < length; i++) {
buf[i] = 0
}
}
return buf
}
// STATIC METHODS
// ==============
Buffer.isEncoding = function (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'binary':
case 'base64':
case 'raw':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.isBuffer = function (b) {
return !!(b !== null && b !== undefined && b._isBuffer)
}
Buffer.byteLength = function (str, encoding) {
var ret
str = str + ''
switch (encoding || 'utf8') {
case 'hex':
ret = str.length / 2
break
case 'utf8':
case 'utf-8':
ret = utf8ToBytes(str).length
break
case 'ascii':
case 'binary':
case 'raw':
ret = str.length
break
case 'base64':
ret = base64ToBytes(str).length
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = str.length * 2
break
default:
throw new Error('Unknown encoding')
}
return ret
}
Buffer.concat = function (list, totalLength) {
assert(isArray(list), 'Usage: Buffer.concat(list, [totalLength])\n' +
'list should be an Array.')
if (list.length === 0) {
return new Buffer(0)
} else if (list.length === 1) {
return list[0]
}
var i
if (typeof totalLength !== 'number') {
totalLength = 0
for (i = 0; i < list.length; i++) {
totalLength += list[i].length
}
}
var buf = new Buffer(totalLength)
var pos = 0
for (i = 0; i < list.length; i++) {
var item = list[i]
item.copy(buf, pos)
pos += item.length
}
return buf
}
// BUFFER INSTANCE METHODS
// =======================
function _hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0
var remaining = buf.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
// must be an even number of digits
var strLen = string.length
assert(strLen % 2 === 0, 'Invalid hex string')
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; i++) {
var byte = parseInt(string.substr(i * 2, 2), 16)
assert(!isNaN(byte), 'Invalid hex string')
buf[offset + i] = byte
}
Buffer._charsWritten = i * 2
return i
}
function _utf8Write (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(utf8ToBytes(string), buf, offset, length)
return charsWritten
}
function _asciiWrite (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(asciiToBytes(string), buf, offset, length)
return charsWritten
}
function _binaryWrite (buf, string, offset, length) {
return _asciiWrite(buf, string, offset, length)
}
function _base64Write (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(base64ToBytes(string), buf, offset, length)
return charsWritten
}
Buffer.prototype.write = function (string, offset, length, encoding) {
// Support both (string, offset, length, encoding)
// and the legacy (string, encoding, offset, length)
if (isFinite(offset)) {
if (!isFinite(length)) {
encoding = length
length = undefined
}
} else { // legacy
var swap = encoding
encoding = offset
offset = length
length = swap
}
offset = Number(offset) || 0
var remaining = this.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
encoding = String(encoding || 'utf8').toLowerCase()
switch (encoding) {
case 'hex':
return _hexWrite(this, string, offset, length)
case 'utf8':
case 'utf-8':
case 'ucs2': // TODO: No support for ucs2 or utf16le encodings yet
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return _utf8Write(this, string, offset, length)
case 'ascii':
return _asciiWrite(this, string, offset, length)
case 'binary':
return _binaryWrite(this, string, offset, length)
case 'base64':
return _base64Write(this, string, offset, length)
default:
throw new Error('Unknown encoding')
}
}
Buffer.prototype.toString = function (encoding, start, end) {
var self = this
encoding = String(encoding || 'utf8').toLowerCase()
start = Number(start) || 0
end = (end !== undefined)
? Number(end)
: end = self.length
// Fastpath empty strings
if (end === start)
return ''
switch (encoding) {
case 'hex':
return _hexSlice(self, start, end)
case 'utf8':
case 'utf-8':
case 'ucs2': // TODO: No support for ucs2 or utf16le encodings yet
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return _utf8Slice(self, start, end)
case 'ascii':
return _asciiSlice(self, start, end)
case 'binary':
return _binarySlice(self, start, end)
case 'base64':
return _base64Slice(self, start, end)
default:
throw new Error('Unknown encoding')
}
}
Buffer.prototype.toJSON = function () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function (target, target_start, start, end) {
var source = this
if (!start) start = 0
if (!end && end !== 0) end = this.length
if (!target_start) target_start = 0
// Copy 0 bytes; we're done
if (end === start) return
if (target.length === 0 || source.length === 0) return
// Fatal error conditions
assert(end >= start, 'sourceEnd < sourceStart')
assert(target_start >= 0 && target_start < target.length,
'targetStart out of bounds')
assert(start >= 0 && start < source.length, 'sourceStart out of bounds')
assert(end >= 0 && end <= source.length, 'sourceEnd out of bounds')
// Are we oob?
if (end > this.length)
end = this.length
if (target.length - target_start < end - start)
end = target.length - target_start + start
// copy!
for (var i = 0; i < end - start; i++)
target[i + target_start] = this[i + start]
}
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) {
var res = ''
var tmp = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; i++) {
if (buf[i] <= 0x7F) {
res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
tmp = ''
} else {
tmp += '%' + buf[i].toString(16)
}
}
return res + decodeUtf8Char(tmp)
}
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])
return ret
}
function _binarySlice (buf, start, end) {
return _asciiSlice(buf, start, end)
}
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
}
// http://nodejs.org/api/buffer.html#buffer_buf_slice_start_end
Buffer.prototype.slice = function (start, end) {
var len = this.length
start = clamp(start, len, 0)
end = clamp(end, len, len)
if (Buffer._useTypedArrays) {
return augment(this.subarray(start, end))
} else {
var sliceLen = end - start
var newBuf = new Buffer(sliceLen, undefined, true)
for (var i = 0; i < sliceLen; i++) {
newBuf[i] = this[i + start]
}
return newBuf
}
}
// `get` will be removed in Node 0.13+
Buffer.prototype.get = function (offset) {
console.log('.get() is deprecated. Access using array indexes instead.')
return this.readUInt8(offset)
}
// `set` will be removed in Node 0.13+
Buffer.prototype.set = function (v, offset) {
console.log('.set() is deprecated. Access using array indexes instead.')
return this.writeUInt8(v, offset)
}
Buffer.prototype.readUInt8 = function (offset, noAssert) {
if (!noAssert) {
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'Trying to read beyond buffer length')
}
if (offset >= this.length)
return
return this[offset]
}
function _readUInt16 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val
if (littleEndian) {
val = buf[offset]
if (offset + 1 < len)
val |= buf[offset + 1] << 8
} else {
val = buf[offset] << 8
if (offset + 1 < len)
val |= buf[offset + 1]
}
return val
}
Buffer.prototype.readUInt16LE = function (offset, noAssert) {
return _readUInt16(this, offset, true, noAssert)
}
Buffer.prototype.readUInt16BE = function (offset, noAssert) {
return _readUInt16(this, offset, false, noAssert)
}
function _readUInt32 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val
if (littleEndian) {
if (offset + 2 < len)
val = buf[offset + 2] << 16
if (offset + 1 < len)
val |= buf[offset + 1] << 8
val |= buf[offset]
if (offset + 3 < len)
val = val + (buf[offset + 3] << 24 >>> 0)
} else {
if (offset + 1 < len)
val = buf[offset + 1] << 16
if (offset + 2 < len)
val |= buf[offset + 2] << 8
if (offset + 3 < len)
val |= buf[offset + 3]
val = val + (buf[offset] << 24 >>> 0)
}
return val
}
Buffer.prototype.readUInt32LE = function (offset, noAssert) {
return _readUInt32(this, offset, true, noAssert)
}
Buffer.prototype.readUInt32BE = function (offset, noAssert) {
return _readUInt32(this, offset, false, noAssert)
}
Buffer.prototype.readInt8 = function (offset, noAssert) {
if (!noAssert) {
assert(offset !== undefined && offset !== null,
'missing offset')
assert(offset < this.length, 'Trying to read beyond buffer length')
}
if (offset >= this.length)
return
var neg = this[offset] & 0x80
if (neg)
return (0xff - this[offset] + 1) * -1
else
return this[offset]
}
function _readInt16 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val = _readUInt16(buf, offset, littleEndian, true)
var neg = val & 0x8000
if (neg)
return (0xffff - val + 1) * -1
else
return val
}
Buffer.prototype.readInt16LE = function (offset, noAssert) {
return _readInt16(this, offset, true, noAssert)
}
Buffer.prototype.readInt16BE = function (offset, noAssert) {
return _readInt16(this, offset, false, noAssert)
}
function _readInt32 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val = _readUInt32(buf, offset, littleEndian, true)
var neg = val & 0x80000000
if (neg)
return (0xffffffff - val + 1) * -1
else
return val
}
Buffer.prototype.readInt32LE = function (offset, noAssert) {
return _readInt32(this, offset, true, noAssert)
}
Buffer.prototype.readInt32BE = function (offset, noAssert) {
return _readInt32(this, offset, false, noAssert)
}
function _readFloat (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
return ieee754.read(buf, offset, littleEndian, 23, 4)
}
Buffer.prototype.readFloatLE = function (offset, noAssert) {
return _readFloat(this, offset, true, noAssert)
}
Buffer.prototype.readFloatBE = function (offset, noAssert) {
return _readFloat(this, offset, false, noAssert)
}
function _readDouble (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset + 7 < buf.length, 'Trying to read beyond buffer length')
}
return ieee754.read(buf, offset, littleEndian, 52, 8)
}
Buffer.prototype.readDoubleLE = function (offset, noAssert) {
return _readDouble(this, offset, true, noAssert)
}
Buffer.prototype.readDoubleBE = function (offset, noAssert) {
return _readDouble(this, offset, false, noAssert)
}
Buffer.prototype.writeUInt8 = function (value, offset, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'trying to write beyond buffer length')
verifuint(value, 0xff)
}
if (offset >= this.length) return
this[offset] = value
}
function _writeUInt16 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'trying to write beyond buffer length')
verifuint(value, 0xffff)
}
var len = buf.length
if (offset >= len)
return
for (var i = 0, j = Math.min(len - offset, 2); i < j; i++) {
buf[offset + i] =
(value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
(littleEndian ? i : 1 - i) * 8
}
}
Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
_writeUInt16(this, value, offset, true, noAssert)
}
Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
_writeUInt16(this, value, offset, false, noAssert)
}
function _writeUInt32 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'trying to write beyond buffer length')
verifuint(value, 0xffffffff)
}
var len = buf.length
if (offset >= len)
return
for (var i = 0, j = Math.min(len - offset, 4); i < j; i++) {
buf[offset + i] =
(value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
}
}
Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
_writeUInt32(this, value, offset, true, noAssert)
}
Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
_writeUInt32(this, value, offset, false, noAssert)
}
Buffer.prototype.writeInt8 = function (value, offset, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7f, -0x80)
}
if (offset >= this.length)
return
if (value >= 0)
this.writeUInt8(value, offset, noAssert)
else
this.writeUInt8(0xff + value + 1, offset, noAssert)
}
function _writeInt16 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7fff, -0x8000)
}
var len = buf.length
if (offset >= len)
return
if (value >= 0)
_writeUInt16(buf, value, offset, littleEndian, noAssert)
else
_writeUInt16(buf, 0xffff + value + 1, offset, littleEndian, noAssert)
}
Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
_writeInt16(this, value, offset, true, noAssert)
}
Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
_writeInt16(this, value, offset, false, noAssert)
}
function _writeInt32 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7fffffff, -0x80000000)
}
var len = buf.length
if (offset >= len)
return
if (value >= 0)
_writeUInt32(buf, value, offset, littleEndian, noAssert)
else
_writeUInt32(buf, 0xffffffff + value + 1, offset, littleEndian, noAssert)
}
Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
_writeInt32(this, value, offset, true, noAssert)
}
Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
_writeInt32(this, value, offset, false, noAssert)
}
function _writeFloat (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to write beyond buffer length')
verifIEEE754(value, 3.4028234663852886e+38, -3.4028234663852886e+38)
}
var len = buf.length
if (offset >= len)
return
ieee754.write(buf, value, offset, littleEndian, 23, 4)
}
Buffer.prototype.writeFloatLE = function (value, offset, noAssert) {
_writeFloat(this, value, offset, true, noAssert)
}
Buffer.prototype.writeFloatBE = function (value, offset, noAssert) {
_writeFloat(this, value, offset, false, noAssert)
}
function _writeDouble (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 7 < buf.length,
'Trying to write beyond buffer length')
verifIEEE754(value, 1.7976931348623157E+308, -1.7976931348623157E+308)
}
var len = buf.length
if (offset >= len)
return
ieee754.write(buf, value, offset, littleEndian, 52, 8)
}
Buffer.prototype.writeDoubleLE = function (value, offset, noAssert) {
_writeDouble(this, value, offset, true, noAssert)
}
Buffer.prototype.writeDoubleBE = function (value, offset, noAssert) {
_writeDouble(this, value, offset, false, noAssert)
}
// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function (value, start, end) {
if (!value) value = 0
if (!start) start = 0
if (!end) end = this.length
if (typeof value === 'string') {
value = value.charCodeAt(0)
}
assert(typeof value === 'number' && !isNaN(value), 'value is not a number')
assert(end >= start, 'end < start')
// Fill 0 bytes; we're done
if (end === start) return
if (this.length === 0) return
assert(start >= 0 && start < this.length, 'start out of bounds')
assert(end >= 0 && end <= this.length, 'end out of bounds')
for (var i = start; i < end; i++) {
this[i] = value
}
}
Buffer.prototype.inspect = function () {
var out = []