tera/Source/SITE/SignLib/sign-lib.js
progr76@gmail.com 3029d69c0e 0.884
2019-02-10 22:53:54 +03:00

9482 lines
261 KiB
JavaScript

(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){
'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
for (var 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('')
}
},{}],2:[function(require,module,exports){
},{}],3:[function(require,module,exports){
/*!
* 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
}
},{"base64-js":1,"ieee754":6}],4:[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":8}],5:[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);
};
}
},{}],6:[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
}
},{}],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){
/*!
* 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))
}
},{}],9:[function(require,module,exports){
var toString = {}.toString;
module.exports = Array.isArray || function (arr) {
return toString.call(arr) == '[object Array]';
};
},{}],10:[function(require,module,exports){
(function (process){
'use strict';
if (!process.version ||
process.version.indexOf('v0.') === 0 ||
process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
module.exports = { nextTick: 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":11}],11:[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; };
},{}],12:[function(require,module,exports){
module.exports = require('./lib/_stream_duplex.js');
},{"./lib/_stream_duplex.js":13}],13:[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 = 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":15,"./_stream_writable":17,"core-util-is":4,"inherits":7,"process-nextick-args":10}],14:[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 = 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":16,"core-util-is":4,"inherits":7}],15:[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 = 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":13,"./internal/streams/BufferList":18,"./internal/streams/destroy":19,"./internal/streams/stream":20,"_process":11,"core-util-is":4,"events":5,"inherits":7,"isarray":9,"process-nextick-args":10,"safe-buffer":26,"string_decoder/":21,"util":2}],16:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// 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 = 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":13,"core-util-is":4,"inherits":7}],17:[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 = 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":13,"./internal/streams/destroy":19,"./internal/streams/stream":20,"_process":11,"core-util-is":4,"inherits":7,"process-nextick-args":10,"safe-buffer":26,"timers":29,"util-deprecate":30}],18:[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":26,"util":2}],19:[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":10}],20:[function(require,module,exports){
module.exports = require('events').EventEmitter;
},{"events":5}],21:[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":26}],22:[function(require,module,exports){
module.exports = require('./readable').PassThrough
},{"./readable":23}],23:[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":13,"./lib/_stream_passthrough.js":14,"./lib/_stream_readable.js":15,"./lib/_stream_transform.js":16,"./lib/_stream_writable.js":17}],24:[function(require,module,exports){
module.exports = require('./readable').Transform
},{"./readable":23}],25:[function(require,module,exports){
module.exports = require('./lib/_stream_writable.js');
},{"./lib/_stream_writable.js":17}],26:[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":3}],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.
module.exports = Stream;
var EE = require('events').EventEmitter;
var inherits = require('inherits');
inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');
// Backwards-compat with node 0.4.x
Stream.Stream = Stream;
// old-style streams. Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.
function Stream() {
EE.call(this);
}
Stream.prototype.pipe = function(dest, options) {
var source = this;
function ondata(chunk) {
if (dest.writable) {
if (false === dest.write(chunk) && source.pause) {
source.pause();
}
}
}
source.on('data', ondata);
function ondrain() {
if (source.readable && source.resume) {
source.resume();
}
}
dest.on('drain', ondrain);
// If the 'end' option is not supplied, dest.end() will be called when
// source gets the 'end' or 'close' events. Only dest.end() once.
if (!dest._isStdio && (!options || options.end !== false)) {
source.on('end', onend);
source.on('close', onclose);
}
var didOnEnd = false;
function onend() {
if (didOnEnd) return;
didOnEnd = true;
dest.end();
}
function onclose() {
if (didOnEnd) return;
didOnEnd = true;
if (typeof dest.destroy === 'function') dest.destroy();
}
// don't leave dangling pipes when there are errors.
function onerror(er) {
cleanup();
if (EE.listenerCount(this, 'error') === 0) {
throw er; // Unhandled stream error in pipe.
}
}
source.on('error', onerror);
dest.on('error', onerror);
// remove all the event listeners that were added.
function cleanup() {
source.removeListener('data', ondata);
dest.removeListener('drain', ondrain);
source.removeListener('end', onend);
source.removeListener('close', onclose);
source.removeListener('error', onerror);
dest.removeListener('error', onerror);
source.removeListener('end', cleanup);
source.removeListener('close', cleanup);
dest.removeListener('close', cleanup);
}
source.on('end', cleanup);
source.on('close', cleanup);
dest.on('close', cleanup);
dest.emit('pipe', source);
// Allow for unix-like usage: A.pipe(B).pipe(C)
return dest;
};
},{"events":5,"inherits":7,"readable-stream/duplex.js":12,"readable-stream/passthrough.js":22,"readable-stream/readable.js":23,"readable-stream/transform.js":24,"readable-stream/writable.js":25}],28:[function(require,module,exports){
arguments[4][21][0].apply(exports,arguments)
},{"dup":21,"safe-buffer":26}],29:[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":11,"timers":29}],30:[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 : {})
},{}],31:[function(require,module,exports){
window.SignLib = require('secp256k1/lib/js')
window.Buffer = require('safe-buffer').Buffer
// var hash0=[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1];
//
//
// var PrivKey0=sha3("secret");
// var PrivKey=Buffer.from(PrivKey0);
// var hash=Buffer.from(hash0);
// var PubKey=SignLib.publicKeyCreate(PrivKey,1);
//
//
// console.log("PrivKey="+GetHexFromArr(PrivKey));
// console.log("PubKey="+GetHexFromArr(PubKey));
//
//
//
//
// var Str=GetHexFromArr(SignLib.sign(hash, PrivKey,null,null).signature)
// console.log("Str="+Str)
//
//
//
},{"safe-buffer":43,"secp256k1/lib/js":49}],32:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var Transform = require('stream').Transform
var StringDecoder = require('string_decoder').StringDecoder
var inherits = require('inherits')
function CipherBase (hashMode) {
Transform.call(this)
this.hashMode = typeof hashMode === 'string'
if (this.hashMode) {
this[hashMode] = this._finalOrDigest
} else {
this.final = this._finalOrDigest
}
if (this._final) {
this.__final = this._final
this._final = null
}
this._decoder = null
this._encoding = null
}
inherits(CipherBase, Transform)
CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
if (typeof data === 'string') {
data = Buffer.from(data, inputEnc)
}
var outData = this._update(data)
if (this.hashMode) return this
if (outputEnc) {
outData = this._toString(outData, outputEnc)
}
return outData
}
CipherBase.prototype.setAutoPadding = function () {}
CipherBase.prototype.getAuthTag = function () {
throw new Error('trying to get auth tag in unsupported state')
}
CipherBase.prototype.setAuthTag = function () {
throw new Error('trying to set auth tag in unsupported state')
}
CipherBase.prototype.setAAD = function () {
throw new Error('trying to set aad in unsupported state')
}
CipherBase.prototype._transform = function (data, _, next) {
var err
try {
if (this.hashMode) {
this._update(data)
} else {
this.push(this._update(data))
}
} catch (e) {
err = e
} finally {
next(err)
}
}
CipherBase.prototype._flush = function (done) {
var err
try {
this.push(this.__final())
} catch (e) {
err = e
}
done(err)
}
CipherBase.prototype._finalOrDigest = function (outputEnc) {
var outData = this.__final() || Buffer.alloc(0)
if (outputEnc) {
outData = this._toString(outData, outputEnc, true)
}
return outData
}
CipherBase.prototype._toString = function (value, enc, fin) {
if (!this._decoder) {
this._decoder = new StringDecoder(enc)
this._encoding = enc
}
if (this._encoding !== enc) throw new Error('can\'t switch encodings')
var out = this._decoder.write(value)
if (fin) {
out += this._decoder.end()
}
return out
}
module.exports = CipherBase
},{"inherits":40,"safe-buffer":43,"stream":27,"string_decoder":28}],33:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var MD5 = require('md5.js')
var RIPEMD160 = require('ripemd160')
var sha = require('sha.js')
var Base = require('cipher-base')
function Hash (hash) {
Base.call(this, 'digest')
this._hash = hash
}
inherits(Hash, Base)
Hash.prototype._update = function (data) {
this._hash.update(data)
}
Hash.prototype._final = function () {
return this._hash.digest()
}
module.exports = function createHash (alg) {
alg = alg.toLowerCase()
if (alg === 'md5') return new MD5()
if (alg === 'rmd160' || alg === 'ripemd160') return new RIPEMD160()
return new Hash(sha(alg))
}
},{"cipher-base":32,"inherits":40,"md5.js":41,"ripemd160":42,"sha.js":52}],34:[function(require,module,exports){
var MD5 = require('md5.js')
module.exports = function (buffer) {
return new MD5().update(buffer).digest()
}
},{"md5.js":41}],35:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var Legacy = require('./legacy')
var Base = require('cipher-base')
var Buffer = require('safe-buffer').Buffer
var md5 = require('create-hash/md5')
var RIPEMD160 = require('ripemd160')
var sha = require('sha.js')
var ZEROS = Buffer.alloc(128)
function Hmac (alg, key) {
Base.call(this, 'digest')
if (typeof key === 'string') {
key = Buffer.from(key)
}
var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64
this._alg = alg
this._key = key
if (key.length > blocksize) {
var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
key = hash.update(key).digest()
} else if (key.length < blocksize) {
key = Buffer.concat([key, ZEROS], blocksize)
}
var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
var opad = this._opad = Buffer.allocUnsafe(blocksize)
for (var i = 0; i < blocksize; i++) {
ipad[i] = key[i] ^ 0x36
opad[i] = key[i] ^ 0x5C
}
this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
this._hash.update(ipad)
}
inherits(Hmac, Base)
Hmac.prototype._update = function (data) {
this._hash.update(data)
}
Hmac.prototype._final = function () {
var h = this._hash.digest()
var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
return hash.update(this._opad).update(h).digest()
}
module.exports = function createHmac (alg, key) {
alg = alg.toLowerCase()
if (alg === 'rmd160' || alg === 'ripemd160') {
return new Hmac('rmd160', key)
}
if (alg === 'md5') {
return new Legacy(md5, key)
}
return new Hmac(alg, key)
}
},{"./legacy":36,"cipher-base":32,"create-hash/md5":34,"inherits":40,"ripemd160":42,"safe-buffer":43,"sha.js":52}],36:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var Buffer = require('safe-buffer').Buffer
var Base = require('cipher-base')
var ZEROS = Buffer.alloc(128)
var blocksize = 64
function Hmac (alg, key) {
Base.call(this, 'digest')
if (typeof key === 'string') {
key = Buffer.from(key)
}
this._alg = alg
this._key = key
if (key.length > blocksize) {
key = alg(key)
} else if (key.length < blocksize) {
key = Buffer.concat([key, ZEROS], blocksize)
}
var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
var opad = this._opad = Buffer.allocUnsafe(blocksize)
for (var i = 0; i < blocksize; i++) {
ipad[i] = key[i] ^ 0x36
opad[i] = key[i] ^ 0x5C
}
this._hash = [ipad]
}
inherits(Hmac, Base)
Hmac.prototype._update = function (data) {
this._hash.push(data)
}
Hmac.prototype._final = function () {
var h = this._alg(Buffer.concat(this._hash))
return this._alg(Buffer.concat([this._opad, h]))
}
module.exports = Hmac
},{"cipher-base":32,"inherits":40,"safe-buffer":43}],37:[function(require,module,exports){
(function (Buffer){
'use strict'
var createHmac = require('create-hmac')
var hashInfo = require('./lib/hash-info.json')
var ebuf = new Buffer(0)
var b0x00 = new Buffer([ 0x00 ])
var b0x01 = new Buffer([ 0x01 ])
function HmacDRBG (algo, entropy, nonce, pers) {
var info = hashInfo[algo]
if (info === undefined) throw new Error('hash ' + algo + ' is not supported')
this._algo = algo
this._securityStrength = info.securityStrength / 8
this._outlen = info.outlen / 8
this._reseedInterval = 0x1000000000000 // 2**48
this._init(entropy, nonce, pers)
}
HmacDRBG.prototype._update = function (seed) {
var kmac = createHmac(this._algo, this._K).update(this._V).update(b0x00)
if (seed) kmac.update(seed)
this._K = kmac.digest()
this._V = createHmac(this._algo, this._K).update(this._V).digest()
if (!seed) return
this._K = createHmac(this._algo, this._K).update(this._V).update(b0x01).update(seed).digest()
this._V = createHmac(this._algo, this._K).update(this._V).digest()
}
HmacDRBG.prototype._init = function (entropy, nonce, pers) {
if (entropy.length < this._securityStrength) throw new Error('Not enough entropy')
this._K = new Buffer(this._outlen)
this._V = new Buffer(this._outlen)
for (var i = 0; i < this._K.length; ++i) {
this._K[i] = 0x00
this._V[i] = 0x01
}
this._update(Buffer.concat([ entropy, nonce, pers || ebuf ]))
this._reseed = 1
}
HmacDRBG.prototype.reseed = function (entropy, add) {
if (entropy.length < this._securityStrength) throw new Error('Not enough entropy')
this._update(Buffer.concat([ entropy, add || ebuf ]))
this._reseed = 1
}
HmacDRBG.prototype.generate = function (len, add) {
if (this._reseed > this._reseedInterval) throw new Error('Reseed is required')
if (add && add.length === 0) add = undefined
if (add) this._update(add)
var temp = new Buffer(0)
while (temp.length < len) {
this._V = createHmac(this._algo, this._K).update(this._V).digest()
temp = Buffer.concat([ temp, this._V ])
}
this._update(add)
this._reseed += 1
return temp.slice(0, len)
}
module.exports = HmacDRBG
}).call(this,require("buffer").Buffer)
},{"./lib/hash-info.json":38,"buffer":3,"create-hmac":35}],38:[function(require,module,exports){
module.exports={
"sha1": {
"securityStrength": 128,
"outlen": 160,
"seedlen": 440
},
"sha224": {
"securityStrength": 192,
"outlen": 224,
"seedlen": 440
},
"sha256": {
"securityStrength": 256,
"outlen": 256,
"seedlen": 440
},
"sha384": {
"securityStrength": 256,
"outlen": 384,
"seedlen": 888
},
"sha512": {
"securityStrength": 256,
"outlen": 512,
"seedlen": 888
}
}
},{}],39:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var Transform = require('stream').Transform
var inherits = require('inherits')
function throwIfNotStringOrBuffer (val, prefix) {
if (!Buffer.isBuffer(val) && typeof val !== 'string') {
throw new TypeError(prefix + ' must be a string or a buffer')
}
}
function HashBase (blockSize) {
Transform.call(this)
this._block = Buffer.allocUnsafe(blockSize)
this._blockSize = blockSize
this._blockOffset = 0
this._length = [0, 0, 0, 0]
this._finalized = false
}
inherits(HashBase, Transform)
HashBase.prototype._transform = function (chunk, encoding, callback) {
var error = null
try {
this.update(chunk, encoding)
} catch (err) {
error = err
}
callback(error)
}
HashBase.prototype._flush = function (callback) {
var error = null
try {
this.push(this.digest())
} catch (err) {
error = err
}
callback(error)
}
HashBase.prototype.update = function (data, encoding) {
throwIfNotStringOrBuffer(data, 'Data')
if (this._finalized) throw new Error('Digest already called')
if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)
// consume data
var block = this._block
var offset = 0
while (this._blockOffset + data.length - offset >= this._blockSize) {
for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
this._update()
this._blockOffset = 0
}
while (offset < data.length) block[this._blockOffset++] = data[offset++]
// update length
for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
this._length[j] += carry
carry = (this._length[j] / 0x0100000000) | 0
if (carry > 0) this._length[j] -= 0x0100000000 * carry
}
return this
}
HashBase.prototype._update = function () {
throw new Error('_update is not implemented')
}
HashBase.prototype.digest = function (encoding) {
if (this._finalized) throw new Error('Digest already called')
this._finalized = true
var digest = this._digest()
if (encoding !== undefined) digest = digest.toString(encoding)
// reset state
this._block.fill(0)
this._blockOffset = 0
for (var i = 0; i < 4; ++i) this._length[i] = 0
return digest
}
HashBase.prototype._digest = function () {
throw new Error('_digest is not implemented')
}
module.exports = HashBase
},{"inherits":40,"safe-buffer":43,"stream":27}],40:[function(require,module,exports){
arguments[4][7][0].apply(exports,arguments)
},{"dup":7}],41:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var HashBase = require('hash-base')
var Buffer = require('safe-buffer').Buffer
var ARRAY16 = new Array(16)
function MD5 () {
HashBase.call(this, 64)
// state
this._a = 0x67452301
this._b = 0xefcdab89
this._c = 0x98badcfe
this._d = 0x10325476
}
inherits(MD5, HashBase)
MD5.prototype._update = function () {
var M = ARRAY16
for (var i = 0; i < 16; ++i) M[i] = this._block.readInt32LE(i * 4)
var a = this._a
var b = this._b
var c = this._c
var d = this._d
a = fnF(a, b, c, d, M[0], 0xd76aa478, 7)
d = fnF(d, a, b, c, M[1], 0xe8c7b756, 12)
c = fnF(c, d, a, b, M[2], 0x242070db, 17)
b = fnF(b, c, d, a, M[3], 0xc1bdceee, 22)
a = fnF(a, b, c, d, M[4], 0xf57c0faf, 7)
d = fnF(d, a, b, c, M[5], 0x4787c62a, 12)
c = fnF(c, d, a, b, M[6], 0xa8304613, 17)
b = fnF(b, c, d, a, M[7], 0xfd469501, 22)
a = fnF(a, b, c, d, M[8], 0x698098d8, 7)
d = fnF(d, a, b, c, M[9], 0x8b44f7af, 12)
c = fnF(c, d, a, b, M[10], 0xffff5bb1, 17)
b = fnF(b, c, d, a, M[11], 0x895cd7be, 22)
a = fnF(a, b, c, d, M[12], 0x6b901122, 7)
d = fnF(d, a, b, c, M[13], 0xfd987193, 12)
c = fnF(c, d, a, b, M[14], 0xa679438e, 17)
b = fnF(b, c, d, a, M[15], 0x49b40821, 22)
a = fnG(a, b, c, d, M[1], 0xf61e2562, 5)
d = fnG(d, a, b, c, M[6], 0xc040b340, 9)
c = fnG(c, d, a, b, M[11], 0x265e5a51, 14)
b = fnG(b, c, d, a, M[0], 0xe9b6c7aa, 20)
a = fnG(a, b, c, d, M[5], 0xd62f105d, 5)
d = fnG(d, a, b, c, M[10], 0x02441453, 9)
c = fnG(c, d, a, b, M[15], 0xd8a1e681, 14)
b = fnG(b, c, d, a, M[4], 0xe7d3fbc8, 20)
a = fnG(a, b, c, d, M[9], 0x21e1cde6, 5)
d = fnG(d, a, b, c, M[14], 0xc33707d6, 9)
c = fnG(c, d, a, b, M[3], 0xf4d50d87, 14)
b = fnG(b, c, d, a, M[8], 0x455a14ed, 20)
a = fnG(a, b, c, d, M[13], 0xa9e3e905, 5)
d = fnG(d, a, b, c, M[2], 0xfcefa3f8, 9)
c = fnG(c, d, a, b, M[7], 0x676f02d9, 14)
b = fnG(b, c, d, a, M[12], 0x8d2a4c8a, 20)
a = fnH(a, b, c, d, M[5], 0xfffa3942, 4)
d = fnH(d, a, b, c, M[8], 0x8771f681, 11)
c = fnH(c, d, a, b, M[11], 0x6d9d6122, 16)
b = fnH(b, c, d, a, M[14], 0xfde5380c, 23)
a = fnH(a, b, c, d, M[1], 0xa4beea44, 4)
d = fnH(d, a, b, c, M[4], 0x4bdecfa9, 11)
c = fnH(c, d, a, b, M[7], 0xf6bb4b60, 16)
b = fnH(b, c, d, a, M[10], 0xbebfbc70, 23)
a = fnH(a, b, c, d, M[13], 0x289b7ec6, 4)
d = fnH(d, a, b, c, M[0], 0xeaa127fa, 11)
c = fnH(c, d, a, b, M[3], 0xd4ef3085, 16)
b = fnH(b, c, d, a, M[6], 0x04881d05, 23)
a = fnH(a, b, c, d, M[9], 0xd9d4d039, 4)
d = fnH(d, a, b, c, M[12], 0xe6db99e5, 11)
c = fnH(c, d, a, b, M[15], 0x1fa27cf8, 16)
b = fnH(b, c, d, a, M[2], 0xc4ac5665, 23)
a = fnI(a, b, c, d, M[0], 0xf4292244, 6)
d = fnI(d, a, b, c, M[7], 0x432aff97, 10)
c = fnI(c, d, a, b, M[14], 0xab9423a7, 15)
b = fnI(b, c, d, a, M[5], 0xfc93a039, 21)
a = fnI(a, b, c, d, M[12], 0x655b59c3, 6)
d = fnI(d, a, b, c, M[3], 0x8f0ccc92, 10)
c = fnI(c, d, a, b, M[10], 0xffeff47d, 15)
b = fnI(b, c, d, a, M[1], 0x85845dd1, 21)
a = fnI(a, b, c, d, M[8], 0x6fa87e4f, 6)
d = fnI(d, a, b, c, M[15], 0xfe2ce6e0, 10)
c = fnI(c, d, a, b, M[6], 0xa3014314, 15)
b = fnI(b, c, d, a, M[13], 0x4e0811a1, 21)
a = fnI(a, b, c, d, M[4], 0xf7537e82, 6)
d = fnI(d, a, b, c, M[11], 0xbd3af235, 10)
c = fnI(c, d, a, b, M[2], 0x2ad7d2bb, 15)
b = fnI(b, c, d, a, M[9], 0xeb86d391, 21)
this._a = (this._a + a) | 0
this._b = (this._b + b) | 0
this._c = (this._c + c) | 0
this._d = (this._d + d) | 0
}
MD5.prototype._digest = function () {
// create padding and handle blocks
this._block[this._blockOffset++] = 0x80
if (this._blockOffset > 56) {
this._block.fill(0, this._blockOffset, 64)
this._update()
this._blockOffset = 0
}
this._block.fill(0, this._blockOffset, 56)
this._block.writeUInt32LE(this._length[0], 56)
this._block.writeUInt32LE(this._length[1], 60)
this._update()
// produce result
var buffer = Buffer.allocUnsafe(16)
buffer.writeInt32LE(this._a, 0)
buffer.writeInt32LE(this._b, 4)
buffer.writeInt32LE(this._c, 8)
buffer.writeInt32LE(this._d, 12)
return buffer
}
function rotl (x, n) {
return (x << n) | (x >>> (32 - n))
}
function fnF (a, b, c, d, m, k, s) {
return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + b) | 0
}
function fnG (a, b, c, d, m, k, s) {
return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + b) | 0
}
function fnH (a, b, c, d, m, k, s) {
return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + b) | 0
}
function fnI (a, b, c, d, m, k, s) {
return (rotl((a + ((c ^ (b | (~d)))) + m + k) | 0, s) + b) | 0
}
module.exports = MD5
},{"hash-base":39,"inherits":40,"safe-buffer":43}],42:[function(require,module,exports){
'use strict'
var Buffer = require('buffer').Buffer
var inherits = require('inherits')
var HashBase = require('hash-base')
var ARRAY16 = new Array(16)
var zl = [
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
]
var zr = [
5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
]
var sl = [
11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
]
var sr = [
8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
]
var hl = [0x00000000, 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e]
var hr = [0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9, 0x00000000]
function RIPEMD160 () {
HashBase.call(this, 64)
// state
this._a = 0x67452301
this._b = 0xefcdab89
this._c = 0x98badcfe
this._d = 0x10325476
this._e = 0xc3d2e1f0
}
inherits(RIPEMD160, HashBase)
RIPEMD160.prototype._update = function () {
var words = ARRAY16
for (var j = 0; j < 16; ++j) words[j] = this._block.readInt32LE(j * 4)
var al = this._a | 0
var bl = this._b | 0
var cl = this._c | 0
var dl = this._d | 0
var el = this._e | 0
var ar = this._a | 0
var br = this._b | 0
var cr = this._c | 0
var dr = this._d | 0
var er = this._e | 0
// computation
for (var i = 0; i < 80; i += 1) {
var tl
var tr
if (i < 16) {
tl = fn1(al, bl, cl, dl, el, words[zl[i]], hl[0], sl[i])
tr = fn5(ar, br, cr, dr, er, words[zr[i]], hr[0], sr[i])
} else if (i < 32) {
tl = fn2(al, bl, cl, dl, el, words[zl[i]], hl[1], sl[i])
tr = fn4(ar, br, cr, dr, er, words[zr[i]], hr[1], sr[i])
} else if (i < 48) {
tl = fn3(al, bl, cl, dl, el, words[zl[i]], hl[2], sl[i])
tr = fn3(ar, br, cr, dr, er, words[zr[i]], hr[2], sr[i])
} else if (i < 64) {
tl = fn4(al, bl, cl, dl, el, words[zl[i]], hl[3], sl[i])
tr = fn2(ar, br, cr, dr, er, words[zr[i]], hr[3], sr[i])
} else { // if (i<80) {
tl = fn5(al, bl, cl, dl, el, words[zl[i]], hl[4], sl[i])
tr = fn1(ar, br, cr, dr, er, words[zr[i]], hr[4], sr[i])
}
al = el
el = dl
dl = rotl(cl, 10)
cl = bl
bl = tl
ar = er
er = dr
dr = rotl(cr, 10)
cr = br
br = tr
}
// update state
var t = (this._b + cl + dr) | 0
this._b = (this._c + dl + er) | 0
this._c = (this._d + el + ar) | 0
this._d = (this._e + al + br) | 0
this._e = (this._a + bl + cr) | 0
this._a = t
}
RIPEMD160.prototype._digest = function () {
// create padding and handle blocks
this._block[this._blockOffset++] = 0x80
if (this._blockOffset > 56) {
this._block.fill(0, this._blockOffset, 64)
this._update()
this._blockOffset = 0
}
this._block.fill(0, this._blockOffset, 56)
this._block.writeUInt32LE(this._length[0], 56)
this._block.writeUInt32LE(this._length[1], 60)
this._update()
// produce result
var buffer = Buffer.alloc ? Buffer.alloc(20) : new Buffer(20)
buffer.writeInt32LE(this._a, 0)
buffer.writeInt32LE(this._b, 4)
buffer.writeInt32LE(this._c, 8)
buffer.writeInt32LE(this._d, 12)
buffer.writeInt32LE(this._e, 16)
return buffer
}
function rotl (x, n) {
return (x << n) | (x >>> (32 - n))
}
function fn1 (a, b, c, d, e, m, k, s) {
return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0
}
function fn2 (a, b, c, d, e, m, k, s) {
return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0
}
function fn3 (a, b, c, d, e, m, k, s) {
return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0
}
function fn4 (a, b, c, d, e, m, k, s) {
return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0
}
function fn5 (a, b, c, d, e, m, k, s) {
return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0
}
module.exports = RIPEMD160
},{"buffer":3,"hash-base":39,"inherits":40}],43:[function(require,module,exports){
arguments[4][26][0].apply(exports,arguments)
},{"buffer":3,"dup":26}],44:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var optimized = require('./optimized')
function BN () {
this.negative = 0
this.words = null
this.length = 0
}
BN.fromNumber = function (n) {
var bn = new BN()
bn.words = [n & 0x03ffffff]
bn.length = 1
return bn
}
BN.fromBuffer = function (b32) {
var bn = new BN()
bn.words = new Array(10)
bn.words[0] = (b32[28] & 0x03) << 24 | b32[29] << 16 | b32[30] << 8 | b32[31]
bn.words[1] = (b32[25] & 0x0F) << 22 | b32[26] << 14 | b32[27] << 6 | b32[28] >>> 2
bn.words[2] = (b32[22] & 0x3F) << 20 | b32[23] << 12 | b32[24] << 4 | b32[25] >>> 4
bn.words[3] = (b32[19] & 0xFF) << 18 | b32[20] << 10 | b32[21] << 2 | b32[22] >>> 6
bn.words[4] = (b32[15] & 0x03) << 24 | b32[16] << 16 | b32[17] << 8 | b32[18]
bn.words[5] = (b32[12] & 0x0F) << 22 | b32[13] << 14 | b32[14] << 6 | b32[15] >>> 2
bn.words[6] = (b32[9] & 0x3F) << 20 | b32[10] << 12 | b32[11] << 4 | b32[12] >>> 4
bn.words[7] = (b32[6] & 0xFF) << 18 | b32[7] << 10 | b32[8] << 2 | b32[9] >>> 6
bn.words[8] = (b32[2] & 0x03) << 24 | b32[3] << 16 | b32[4] << 8 | b32[5]
bn.words[9] = b32[0] << 14 | b32[1] << 6 | b32[2] >>> 2
bn.length = 10
return bn.strip()
}
BN.prototype.toBuffer = function () {
var w = this.words
for (var i = this.length; i < 10; ++i) w[i] = 0
return Buffer.from([
(w[9] >>> 14) & 0xFF, (w[9] >>> 6) & 0xFF, (w[9] & 0x3F) << 2 | ((w[8] >>> 24) & 0x03), // 0, 1, 2
(w[8] >>> 16) & 0xFF, (w[8] >>> 8) & 0xFF, w[8] & 0xFF, // 3, 4, 5
(w[7] >>> 18) & 0xFF, (w[7] >>> 10) & 0xFF, (w[7] >>> 2) & 0xFF, // 6, 7, 8
((w[7] & 0x03) << 6) | ((w[6] >>> 20) & 0x3F), (w[6] >>> 12) & 0xFF, (w[6] >>> 4) & 0xFF, // 9, 10, 11
((w[6] & 0x0F) << 4) | ((w[5] >>> 22) & 0x0F), (w[5] >>> 14) & 0xFF, (w[5] >>> 6) & 0xFF, // 12, 13, 14
((w[5] & 0x3F) << 2) | ((w[4] >>> 24) & 0x03), (w[4] >>> 16) & 0xFF, (w[4] >>> 8) & 0xFF, w[4] & 0xFF, // 15, 16, 17, 18
(w[3] >>> 18) & 0xFF, (w[3] >>> 10) & 0xFF, (w[3] >>> 2) & 0xFF, // 19, 20, 21
((w[3] & 0x03) << 6) | ((w[2] >>> 20) & 0x3F), (w[2] >>> 12) & 0xFF, (w[2] >>> 4) & 0xFF, // 22, 23, 24
((w[2] & 0x0F) << 4) | ((w[1] >>> 22) & 0x0F), (w[1] >>> 14) & 0xFF, (w[1] >>> 6) & 0xFF, // 25, 26, 27
((w[1] & 0x3F) << 2) | ((w[0] >>> 24) & 0x03), (w[0] >>> 16) & 0xFF, (w[0] >>> 8) & 0xFF, w[0] & 0xFF // 28, 29, 30, 31
])
}
BN.prototype.clone = function () {
var r = new BN()
r.words = new Array(this.length)
for (var i = 0; i < this.length; i++) r.words[i] = this.words[i]
r.length = this.length
r.negative = this.negative
return r
}
BN.prototype.strip = function () {
while (this.length > 1 && (this.words[this.length - 1] | 0) === 0) this.length--
return this
}
BN.prototype.normSign = function () {
// -0 = 0
if (this.length === 1 && this.words[0] === 0) this.negative = 0
return this
}
BN.prototype.isEven = function () {
return (this.words[0] & 1) === 0
}
BN.prototype.isOdd = function () {
return (this.words[0] & 1) === 1
}
BN.prototype.isZero = function () {
return this.length === 1 && this.words[0] === 0
}
BN.prototype.ucmp = function (num) {
if (this.length !== num.length) return this.length > num.length ? 1 : -1
for (var i = this.length - 1; i >= 0; --i) {
if (this.words[i] !== num.words[i]) return this.words[i] > num.words[i] ? 1 : -1
}
return 0
}
BN.prototype.gtOne = function () {
return this.length > 1 || this.words[0] > 1
}
BN.prototype.isOverflow = function () {
return this.ucmp(BN.n) >= 0
}
BN.prototype.isHigh = function () {
return this.ucmp(BN.nh) === 1
}
BN.prototype.bitLengthGT256 = function () {
return this.length > 10 || (this.length === 10 && this.words[9] > 0x003fffff)
}
BN.prototype.iuaddn = function (num) {
this.words[0] += num
for (var i = 0; this.words[i] > 0x03ffffff && i < this.length; ++i) {
this.words[i] -= 0x04000000
this.words[i + 1] += 1
}
if (i === this.length) {
this.words[i] = 1
this.length += 1
}
return this
}
BN.prototype.iadd = function (num) {
// (-this) + num -> -(this - num)
// this + (-num) -> this - num
if (this.negative !== num.negative) {
if (this.negative !== 0) {
this.negative = 0
this.isub(num)
this.negative ^= 1
} else {
num.negative = 0
this.isub(num)
num.negative = 1
}
return this.normSign()
}
// a.length > b.length
var a
var b
if (this.length > num.length) {
a = this
b = num
} else {
a = num
b = this
}
for (var i = 0, carry = 0; i < b.length; ++i) {
var word = a.words[i] + b.words[i] + carry
this.words[i] = word & 0x03ffffff
carry = word >>> 26
}
for (; carry !== 0 && i < a.length; ++i) {
word = a.words[i] + carry
this.words[i] = word & 0x03ffffff
carry = word >>> 26
}
this.length = a.length
if (carry !== 0) {
this.words[this.length++] = carry
} else if (a !== this) {
for (; i < a.length; ++i) {
this.words[i] = a.words[i]
}
}
return this
}
BN.prototype.add = function (num) {
return this.clone().iadd(num)
}
BN.prototype.isub = function (num) {
// (-this) - num -> -(this + num)
// this - (-num) -> this + num
if (this.negative !== num.negative) {
if (this.negative !== 0) {
this.negative = 0
this.iadd(num)
this.negative = 1
} else {
num.negative = 0
this.iadd(num)
num.negative = 1
}
return this.normSign()
}
var cmp = this.ucmp(num)
if (cmp === 0) {
this.negative = 0
this.words[0] = 0
this.length = 1
return this
}
// a > b
var a
var b
if (cmp > 0) {
a = this
b = num
} else {
a = num
b = this
}
for (var i = 0, carry = 0; i < b.length; ++i) {
var word = a.words[i] - b.words[i] + carry
carry = word >> 26
this.words[i] = word & 0x03ffffff
}
for (; carry !== 0 && i < a.length; ++i) {
word = a.words[i] + carry
carry = word >> 26
this.words[i] = word & 0x03ffffff
}
if (carry === 0 && i < a.length && a !== this) {
for (; i < a.length; ++i) this.words[i] = a.words[i]
}
this.length = Math.max(this.length, i)
if (a !== this) this.negative ^= 1
return this.strip().normSign()
}
BN.prototype.sub = function (num) {
return this.clone().isub(num)
}
BN.umulTo = function (num1, num2, out) {
out.length = num1.length + num2.length - 1
var a1 = num1.words[0]
var b1 = num2.words[0]
var r1 = a1 * b1
var carry = (r1 / 0x04000000) | 0
out.words[0] = r1 & 0x03ffffff
for (var k = 1, maxK = out.length; k < maxK; k++) {
var ncarry = carry >>> 26
var rword = carry & 0x03ffffff
for (var j = Math.max(0, k - num1.length + 1), maxJ = Math.min(k, num2.length - 1); j <= maxJ; j++) {
var i = k - j
var a = num1.words[i]
var b = num2.words[j]
var r = a * b + rword
ncarry += (r / 0x04000000) | 0
rword = r & 0x03ffffff
}
out.words[k] = rword
carry = ncarry
}
if (carry !== 0) out.words[out.length++] = carry
return out.strip()
}
BN.umulTo10x10 = Math.imul ? optimized.umulTo10x10 : BN.umulTo
BN.umulnTo = function (num, k, out) {
if (k === 0) {
out.words = [0]
out.length = 1
return out
}
for (var i = 0, carry = 0; i < num.length; ++i) {
var r = num.words[i] * k + carry
out.words[i] = r & 0x03ffffff
carry = (r / 0x04000000) | 0
}
if (carry > 0) {
out.words[i] = carry
out.length = num.length + 1
} else {
out.length = num.length
}
return out
}
BN.prototype.umul = function (num) {
var out = new BN()
out.words = new Array(this.length + num.length)
if (this.length === 10 && num.length === 10) {
return BN.umulTo10x10(this, num, out)
} else if (this.length === 1) {
return BN.umulnTo(num, this.words[0], out)
} else if (num.length === 1) {
return BN.umulnTo(this, num.words[0], out)
} else {
return BN.umulTo(this, num, out)
}
}
BN.prototype.isplit = function (output) {
output.length = Math.min(this.length, 9)
for (var i = 0; i < output.length; ++i) output.words[i] = this.words[i]
if (this.length <= 9) {
this.words[0] = 0
this.length = 1
return this
}
// Shift by 9 limbs
var prev = this.words[9]
output.words[output.length++] = prev & 0x003fffff
for (i = 10; i < this.length; ++i) {
var word = this.words[i]
this.words[i - 10] = ((word & 0x003fffff) << 4) | (prev >>> 22)
prev = word
}
prev >>>= 22
this.words[i - 10] = prev
if (prev === 0 && this.length > 10) {
this.length -= 10
} else {
this.length -= 9
}
return this
}
BN.prototype.fireduce = function () {
if (this.isOverflow()) this.isub(BN.n)
return this
}
BN.prototype.ureduce = function () {
var num = this.clone().isplit(BN.tmp).umul(BN.nc).iadd(BN.tmp)
if (num.bitLengthGT256()) {
num = num.isplit(BN.tmp).umul(BN.nc).iadd(BN.tmp)
if (num.bitLengthGT256()) num = num.isplit(BN.tmp).umul(BN.nc).iadd(BN.tmp)
}
return num.fireduce()
}
BN.prototype.ishrn = function (n) {
var mask = (1 << n) - 1
var m = 26 - n
for (var i = this.length - 1, carry = 0; i >= 0; --i) {
var word = this.words[i]
this.words[i] = (carry << m) | (word >>> n)
carry = word & mask
}
if (this.length > 1 && this.words[this.length - 1] === 0) this.length -= 1
return this
}
BN.prototype.uinvm = function () {
var x = this.clone()
var y = BN.n.clone()
// A * x + B * y = x
var A = BN.fromNumber(1)
var B = BN.fromNumber(0)
// C * x + D * y = y
var C = BN.fromNumber(0)
var D = BN.fromNumber(1)
while (x.isEven() && y.isEven()) {
for (var k = 1, m = 1; (x.words[0] & m) === 0 && (y.words[0] & m) === 0 && k < 26; ++k, m <<= 1);
x.ishrn(k)
y.ishrn(k)
}
var yp = y.clone()
var xp = x.clone()
while (!x.isZero()) {
for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
if (i > 0) {
x.ishrn(i)
while (i-- > 0) {
if (A.isOdd() || B.isOdd()) {
A.iadd(yp)
B.isub(xp)
}
A.ishrn(1)
B.ishrn(1)
}
}
for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
if (j > 0) {
y.ishrn(j)
while (j-- > 0) {
if (C.isOdd() || D.isOdd()) {
C.iadd(yp)
D.isub(xp)
}
C.ishrn(1)
D.ishrn(1)
}
}
if (x.ucmp(y) >= 0) {
x.isub(y)
A.isub(C)
B.isub(D)
} else {
y.isub(x)
C.isub(A)
D.isub(B)
}
}
if (C.negative === 1) {
C.negative = 0
var result = C.ureduce()
result.negative ^= 1
return result.normSign().iadd(BN.n)
} else {
return C.ureduce()
}
}
BN.prototype.imulK = function () {
this.words[this.length] = 0
this.words[this.length + 1] = 0
this.length += 2
for (var i = 0, lo = 0; i < this.length; ++i) {
var w = this.words[i] | 0
lo += w * 0x3d1
this.words[i] = lo & 0x03ffffff
lo = w * 0x40 + ((lo / 0x04000000) | 0)
}
if (this.words[this.length - 1] === 0) {
this.length -= 1
if (this.words[this.length - 1] === 0) this.length -= 1
}
return this
}
BN.prototype.redIReduce = function () {
this.isplit(BN.tmp).imulK().iadd(BN.tmp)
if (this.bitLengthGT256()) this.isplit(BN.tmp).imulK().iadd(BN.tmp)
var cmp = this.ucmp(BN.p)
if (cmp === 0) {
this.words[0] = 0
this.length = 1
} else if (cmp > 0) {
this.isub(BN.p)
} else {
this.strip()
}
return this
}
BN.prototype.redNeg = function () {
if (this.isZero()) return BN.fromNumber(0)
return BN.p.sub(this)
}
BN.prototype.redAdd = function (num) {
return this.clone().redIAdd(num)
}
BN.prototype.redIAdd = function (num) {
this.iadd(num)
if (this.ucmp(BN.p) >= 0) this.isub(BN.p)
return this
}
BN.prototype.redIAdd7 = function () {
this.iuaddn(7)
if (this.ucmp(BN.p) >= 0) this.isub(BN.p)
return this
}
BN.prototype.redSub = function (num) {
return this.clone().redISub(num)
}
BN.prototype.redISub = function (num) {
this.isub(num)
if (this.negative !== 0) this.iadd(BN.p)
return this
}
BN.prototype.redMul = function (num) {
return this.umul(num).redIReduce()
}
BN.prototype.redSqr = function () {
return this.umul(this).redIReduce()
}
BN.prototype.redSqrt = function () {
if (this.isZero()) return this.clone()
var wv2 = this.redSqr()
var wv4 = wv2.redSqr()
var wv12 = wv4.redSqr().redMul(wv4)
var wv14 = wv12.redMul(wv2)
var wv15 = wv14.redMul(this)
var out = wv15
for (var i = 0; i < 54; ++i) out = out.redSqr().redSqr().redSqr().redSqr().redMul(wv15)
out = out.redSqr().redSqr().redSqr().redSqr().redMul(wv14)
for (i = 0; i < 5; ++i) out = out.redSqr().redSqr().redSqr().redSqr().redMul(wv15)
out = out.redSqr().redSqr().redSqr().redSqr().redMul(wv12)
out = out.redSqr().redSqr().redSqr().redSqr().redSqr().redSqr().redMul(wv12)
if (out.redSqr().ucmp(this) === 0) {
return out
} else {
return null
}
}
BN.prototype.redInvm = function () {
var a = this.clone()
var b = BN.p.clone()
var x1 = BN.fromNumber(1)
var x2 = BN.fromNumber(0)
while (a.gtOne() && b.gtOne()) {
for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
if (i > 0) {
a.ishrn(i)
while (i-- > 0) {
if (x1.isOdd()) x1.iadd(BN.p)
x1.ishrn(1)
}
}
for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
if (j > 0) {
b.ishrn(j)
while (j-- > 0) {
if (x2.isOdd()) x2.iadd(BN.p)
x2.ishrn(1)
}
}
if (a.ucmp(b) >= 0) {
a.isub(b)
x1.isub(x2)
} else {
b.isub(a)
x2.isub(x1)
}
}
var res
if (a.length === 1 && a.words[0] === 1) {
res = x1
} else {
res = x2
}
if (res.negative !== 0) res.iadd(BN.p)
if (res.negative !== 0) {
res.negative = 0
return res.redIReduce().redNeg()
} else {
return res.redIReduce()
}
}
BN.prototype.getNAF = function (w) {
var naf = []
var ws = 1 << (w + 1)
var wsm1 = ws - 1
var ws2 = ws >> 1
var k = this.clone()
while (!k.isZero()) {
for (var i = 0, m = 1; (k.words[0] & m) === 0 && i < 26; ++i, m <<= 1) naf.push(0)
if (i !== 0) {
k.ishrn(i)
} else {
var mod = k.words[0] & wsm1
if (mod >= ws2) {
naf.push(ws2 - mod)
k.iuaddn(mod - ws2).ishrn(1)
} else {
naf.push(mod)
k.words[0] -= mod
if (!k.isZero()) {
for (i = w - 1; i > 0; --i) naf.push(0)
k.ishrn(w)
}
}
}
}
return naf
}
BN.prototype.inspect = function () {
if (this.isZero()) return '0'
var buffer = this.toBuffer().toString('hex')
for (var i = 0; buffer[i] === '0'; ++i);
return buffer.slice(i)
}
BN.n = BN.fromBuffer(Buffer.from('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141', 'hex'))
BN.nh = BN.n.clone().ishrn(1)
BN.nc = BN.fromBuffer(Buffer.from('000000000000000000000000000000014551231950B75FC4402DA1732FC9BEBF', 'hex'))
BN.p = BN.fromBuffer(Buffer.from('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F', 'hex'))
BN.psn = BN.p.sub(BN.n)
BN.tmp = new BN()
BN.tmp.words = new Array(10)
// WTF?! it speed-up benchmark on ~20%
;(function () {
var x = BN.fromNumber(1)
x.words[3] = 0
})()
module.exports = BN
},{"./optimized":45,"safe-buffer":43}],45:[function(require,module,exports){
'use strict'
exports.umulTo10x10 = function (num1, num2, out) {
var a = num1.words
var b = num2.words
var o = out.words
var c = 0
var lo
var mid
var hi
var a0 = a[0] | 0
var al0 = a0 & 0x1fff
var ah0 = a0 >>> 13
var a1 = a[1] | 0
var al1 = a1 & 0x1fff
var ah1 = a1 >>> 13
var a2 = a[2] | 0
var al2 = a2 & 0x1fff
var ah2 = a2 >>> 13
var a3 = a[3] | 0
var al3 = a3 & 0x1fff
var ah3 = a3 >>> 13
var a4 = a[4] | 0
var al4 = a4 & 0x1fff
var ah4 = a4 >>> 13
var a5 = a[5] | 0
var al5 = a5 & 0x1fff
var ah5 = a5 >>> 13
var a6 = a[6] | 0
var al6 = a6 & 0x1fff
var ah6 = a6 >>> 13
var a7 = a[7] | 0
var al7 = a7 & 0x1fff
var ah7 = a7 >>> 13
var a8 = a[8] | 0
var al8 = a8 & 0x1fff
var ah8 = a8 >>> 13
var a9 = a[9] | 0
var al9 = a9 & 0x1fff
var ah9 = a9 >>> 13
var b0 = b[0] | 0
var bl0 = b0 & 0x1fff
var bh0 = b0 >>> 13
var b1 = b[1] | 0
var bl1 = b1 & 0x1fff
var bh1 = b1 >>> 13
var b2 = b[2] | 0
var bl2 = b2 & 0x1fff
var bh2 = b2 >>> 13
var b3 = b[3] | 0
var bl3 = b3 & 0x1fff
var bh3 = b3 >>> 13
var b4 = b[4] | 0
var bl4 = b4 & 0x1fff
var bh4 = b4 >>> 13
var b5 = b[5] | 0
var bl5 = b5 & 0x1fff
var bh5 = b5 >>> 13
var b6 = b[6] | 0
var bl6 = b6 & 0x1fff
var bh6 = b6 >>> 13
var b7 = b[7] | 0
var bl7 = b7 & 0x1fff
var bh7 = b7 >>> 13
var b8 = b[8] | 0
var bl8 = b8 & 0x1fff
var bh8 = b8 >>> 13
var b9 = b[9] | 0
var bl9 = b9 & 0x1fff
var bh9 = b9 >>> 13
out.length = 19
/* k = 0 */
lo = Math.imul(al0, bl0)
mid = Math.imul(al0, bh0)
mid += Math.imul(ah0, bl0)
hi = Math.imul(ah0, bh0)
var w0 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w0 >>> 26)
w0 &= 0x3ffffff
/* k = 1 */
lo = Math.imul(al1, bl0)
mid = Math.imul(al1, bh0)
mid += Math.imul(ah1, bl0)
hi = Math.imul(ah1, bh0)
lo += Math.imul(al0, bl1)
mid += Math.imul(al0, bh1)
mid += Math.imul(ah0, bl1)
hi += Math.imul(ah0, bh1)
var w1 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w1 >>> 26)
w1 &= 0x3ffffff
/* k = 2 */
lo = Math.imul(al2, bl0)
mid = Math.imul(al2, bh0)
mid += Math.imul(ah2, bl0)
hi = Math.imul(ah2, bh0)
lo += Math.imul(al1, bl1)
mid += Math.imul(al1, bh1)
mid += Math.imul(ah1, bl1)
hi += Math.imul(ah1, bh1)
lo += Math.imul(al0, bl2)
mid += Math.imul(al0, bh2)
mid += Math.imul(ah0, bl2)
hi += Math.imul(ah0, bh2)
var w2 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w2 >>> 26)
w2 &= 0x3ffffff
/* k = 3 */
lo = Math.imul(al3, bl0)
mid = Math.imul(al3, bh0)
mid += Math.imul(ah3, bl0)
hi = Math.imul(ah3, bh0)
lo += Math.imul(al2, bl1)
mid += Math.imul(al2, bh1)
mid += Math.imul(ah2, bl1)
hi += Math.imul(ah2, bh1)
lo += Math.imul(al1, bl2)
mid += Math.imul(al1, bh2)
mid += Math.imul(ah1, bl2)
hi += Math.imul(ah1, bh2)
lo += Math.imul(al0, bl3)
mid += Math.imul(al0, bh3)
mid += Math.imul(ah0, bl3)
hi += Math.imul(ah0, bh3)
var w3 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w3 >>> 26)
w3 &= 0x3ffffff
/* k = 4 */
lo = Math.imul(al4, bl0)
mid = Math.imul(al4, bh0)
mid += Math.imul(ah4, bl0)
hi = Math.imul(ah4, bh0)
lo += Math.imul(al3, bl1)
mid += Math.imul(al3, bh1)
mid += Math.imul(ah3, bl1)
hi += Math.imul(ah3, bh1)
lo += Math.imul(al2, bl2)
mid += Math.imul(al2, bh2)
mid += Math.imul(ah2, bl2)
hi += Math.imul(ah2, bh2)
lo += Math.imul(al1, bl3)
mid += Math.imul(al1, bh3)
mid += Math.imul(ah1, bl3)
hi += Math.imul(ah1, bh3)
lo += Math.imul(al0, bl4)
mid += Math.imul(al0, bh4)
mid += Math.imul(ah0, bl4)
hi += Math.imul(ah0, bh4)
var w4 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w4 >>> 26)
w4 &= 0x3ffffff
/* k = 5 */
lo = Math.imul(al5, bl0)
mid = Math.imul(al5, bh0)
mid += Math.imul(ah5, bl0)
hi = Math.imul(ah5, bh0)
lo += Math.imul(al4, bl1)
mid += Math.imul(al4, bh1)
mid += Math.imul(ah4, bl1)
hi += Math.imul(ah4, bh1)
lo += Math.imul(al3, bl2)
mid += Math.imul(al3, bh2)
mid += Math.imul(ah3, bl2)
hi += Math.imul(ah3, bh2)
lo += Math.imul(al2, bl3)
mid += Math.imul(al2, bh3)
mid += Math.imul(ah2, bl3)
hi += Math.imul(ah2, bh3)
lo += Math.imul(al1, bl4)
mid += Math.imul(al1, bh4)
mid += Math.imul(ah1, bl4)
hi += Math.imul(ah1, bh4)
lo += Math.imul(al0, bl5)
mid += Math.imul(al0, bh5)
mid += Math.imul(ah0, bl5)
hi += Math.imul(ah0, bh5)
var w5 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w5 >>> 26)
w5 &= 0x3ffffff
/* k = 6 */
lo = Math.imul(al6, bl0)
mid = Math.imul(al6, bh0)
mid += Math.imul(ah6, bl0)
hi = Math.imul(ah6, bh0)
lo += Math.imul(al5, bl1)
mid += Math.imul(al5, bh1)
mid += Math.imul(ah5, bl1)
hi += Math.imul(ah5, bh1)
lo += Math.imul(al4, bl2)
mid += Math.imul(al4, bh2)
mid += Math.imul(ah4, bl2)
hi += Math.imul(ah4, bh2)
lo += Math.imul(al3, bl3)
mid += Math.imul(al3, bh3)
mid += Math.imul(ah3, bl3)
hi += Math.imul(ah3, bh3)
lo += Math.imul(al2, bl4)
mid += Math.imul(al2, bh4)
mid += Math.imul(ah2, bl4)
hi += Math.imul(ah2, bh4)
lo += Math.imul(al1, bl5)
mid += Math.imul(al1, bh5)
mid += Math.imul(ah1, bl5)
hi += Math.imul(ah1, bh5)
lo += Math.imul(al0, bl6)
mid += Math.imul(al0, bh6)
mid += Math.imul(ah0, bl6)
hi += Math.imul(ah0, bh6)
var w6 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w6 >>> 26)
w6 &= 0x3ffffff
/* k = 7 */
lo = Math.imul(al7, bl0)
mid = Math.imul(al7, bh0)
mid += Math.imul(ah7, bl0)
hi = Math.imul(ah7, bh0)
lo += Math.imul(al6, bl1)
mid += Math.imul(al6, bh1)
mid += Math.imul(ah6, bl1)
hi += Math.imul(ah6, bh1)
lo += Math.imul(al5, bl2)
mid += Math.imul(al5, bh2)
mid += Math.imul(ah5, bl2)
hi += Math.imul(ah5, bh2)
lo += Math.imul(al4, bl3)
mid += Math.imul(al4, bh3)
mid += Math.imul(ah4, bl3)
hi += Math.imul(ah4, bh3)
lo += Math.imul(al3, bl4)
mid += Math.imul(al3, bh4)
mid += Math.imul(ah3, bl4)
hi += Math.imul(ah3, bh4)
lo += Math.imul(al2, bl5)
mid += Math.imul(al2, bh5)
mid += Math.imul(ah2, bl5)
hi += Math.imul(ah2, bh5)
lo += Math.imul(al1, bl6)
mid += Math.imul(al1, bh6)
mid += Math.imul(ah1, bl6)
hi += Math.imul(ah1, bh6)
lo += Math.imul(al0, bl7)
mid += Math.imul(al0, bh7)
mid += Math.imul(ah0, bl7)
hi += Math.imul(ah0, bh7)
var w7 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w7 >>> 26)
w7 &= 0x3ffffff
/* k = 8 */
lo = Math.imul(al8, bl0)
mid = Math.imul(al8, bh0)
mid += Math.imul(ah8, bl0)
hi = Math.imul(ah8, bh0)
lo += Math.imul(al7, bl1)
mid += Math.imul(al7, bh1)
mid += Math.imul(ah7, bl1)
hi += Math.imul(ah7, bh1)
lo += Math.imul(al6, bl2)
mid += Math.imul(al6, bh2)
mid += Math.imul(ah6, bl2)
hi += Math.imul(ah6, bh2)
lo += Math.imul(al5, bl3)
mid += Math.imul(al5, bh3)
mid += Math.imul(ah5, bl3)
hi += Math.imul(ah5, bh3)
lo += Math.imul(al4, bl4)
mid += Math.imul(al4, bh4)
mid += Math.imul(ah4, bl4)
hi += Math.imul(ah4, bh4)
lo += Math.imul(al3, bl5)
mid += Math.imul(al3, bh5)
mid += Math.imul(ah3, bl5)
hi += Math.imul(ah3, bh5)
lo += Math.imul(al2, bl6)
mid += Math.imul(al2, bh6)
mid += Math.imul(ah2, bl6)
hi += Math.imul(ah2, bh6)
lo += Math.imul(al1, bl7)
mid += Math.imul(al1, bh7)
mid += Math.imul(ah1, bl7)
hi += Math.imul(ah1, bh7)
lo += Math.imul(al0, bl8)
mid += Math.imul(al0, bh8)
mid += Math.imul(ah0, bl8)
hi += Math.imul(ah0, bh8)
var w8 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w8 >>> 26)
w8 &= 0x3ffffff
/* k = 9 */
lo = Math.imul(al9, bl0)
mid = Math.imul(al9, bh0)
mid += Math.imul(ah9, bl0)
hi = Math.imul(ah9, bh0)
lo += Math.imul(al8, bl1)
mid += Math.imul(al8, bh1)
mid += Math.imul(ah8, bl1)
hi += Math.imul(ah8, bh1)
lo += Math.imul(al7, bl2)
mid += Math.imul(al7, bh2)
mid += Math.imul(ah7, bl2)
hi += Math.imul(ah7, bh2)
lo += Math.imul(al6, bl3)
mid += Math.imul(al6, bh3)
mid += Math.imul(ah6, bl3)
hi += Math.imul(ah6, bh3)
lo += Math.imul(al5, bl4)
mid += Math.imul(al5, bh4)
mid += Math.imul(ah5, bl4)
hi += Math.imul(ah5, bh4)
lo += Math.imul(al4, bl5)
mid += Math.imul(al4, bh5)
mid += Math.imul(ah4, bl5)
hi += Math.imul(ah4, bh5)
lo += Math.imul(al3, bl6)
mid += Math.imul(al3, bh6)
mid += Math.imul(ah3, bl6)
hi += Math.imul(ah3, bh6)
lo += Math.imul(al2, bl7)
mid += Math.imul(al2, bh7)
mid += Math.imul(ah2, bl7)
hi += Math.imul(ah2, bh7)
lo += Math.imul(al1, bl8)
mid += Math.imul(al1, bh8)
mid += Math.imul(ah1, bl8)
hi += Math.imul(ah1, bh8)
lo += Math.imul(al0, bl9)
mid += Math.imul(al0, bh9)
mid += Math.imul(ah0, bl9)
hi += Math.imul(ah0, bh9)
var w9 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w9 >>> 26)
w9 &= 0x3ffffff
/* k = 10 */
lo = Math.imul(al9, bl1)
mid = Math.imul(al9, bh1)
mid += Math.imul(ah9, bl1)
hi = Math.imul(ah9, bh1)
lo += Math.imul(al8, bl2)
mid += Math.imul(al8, bh2)
mid += Math.imul(ah8, bl2)
hi += Math.imul(ah8, bh2)
lo += Math.imul(al7, bl3)
mid += Math.imul(al7, bh3)
mid += Math.imul(ah7, bl3)
hi += Math.imul(ah7, bh3)
lo += Math.imul(al6, bl4)
mid += Math.imul(al6, bh4)
mid += Math.imul(ah6, bl4)
hi += Math.imul(ah6, bh4)
lo += Math.imul(al5, bl5)
mid += Math.imul(al5, bh5)
mid += Math.imul(ah5, bl5)
hi += Math.imul(ah5, bh5)
lo += Math.imul(al4, bl6)
mid += Math.imul(al4, bh6)
mid += Math.imul(ah4, bl6)
hi += Math.imul(ah4, bh6)
lo += Math.imul(al3, bl7)
mid += Math.imul(al3, bh7)
mid += Math.imul(ah3, bl7)
hi += Math.imul(ah3, bh7)
lo += Math.imul(al2, bl8)
mid += Math.imul(al2, bh8)
mid += Math.imul(ah2, bl8)
hi += Math.imul(ah2, bh8)
lo += Math.imul(al1, bl9)
mid += Math.imul(al1, bh9)
mid += Math.imul(ah1, bl9)
hi += Math.imul(ah1, bh9)
var w10 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w10 >>> 26)
w10 &= 0x3ffffff
/* k = 11 */
lo = Math.imul(al9, bl2)
mid = Math.imul(al9, bh2)
mid += Math.imul(ah9, bl2)
hi = Math.imul(ah9, bh2)
lo += Math.imul(al8, bl3)
mid += Math.imul(al8, bh3)
mid += Math.imul(ah8, bl3)
hi += Math.imul(ah8, bh3)
lo += Math.imul(al7, bl4)
mid += Math.imul(al7, bh4)
mid += Math.imul(ah7, bl4)
hi += Math.imul(ah7, bh4)
lo += Math.imul(al6, bl5)
mid += Math.imul(al6, bh5)
mid += Math.imul(ah6, bl5)
hi += Math.imul(ah6, bh5)
lo += Math.imul(al5, bl6)
mid += Math.imul(al5, bh6)
mid += Math.imul(ah5, bl6)
hi += Math.imul(ah5, bh6)
lo += Math.imul(al4, bl7)
mid += Math.imul(al4, bh7)
mid += Math.imul(ah4, bl7)
hi += Math.imul(ah4, bh7)
lo += Math.imul(al3, bl8)
mid += Math.imul(al3, bh8)
mid += Math.imul(ah3, bl8)
hi += Math.imul(ah3, bh8)
lo += Math.imul(al2, bl9)
mid += Math.imul(al2, bh9)
mid += Math.imul(ah2, bl9)
hi += Math.imul(ah2, bh9)
var w11 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w11 >>> 26)
w11 &= 0x3ffffff
/* k = 12 */
lo = Math.imul(al9, bl3)
mid = Math.imul(al9, bh3)
mid += Math.imul(ah9, bl3)
hi = Math.imul(ah9, bh3)
lo += Math.imul(al8, bl4)
mid += Math.imul(al8, bh4)
mid += Math.imul(ah8, bl4)
hi += Math.imul(ah8, bh4)
lo += Math.imul(al7, bl5)
mid += Math.imul(al7, bh5)
mid += Math.imul(ah7, bl5)
hi += Math.imul(ah7, bh5)
lo += Math.imul(al6, bl6)
mid += Math.imul(al6, bh6)
mid += Math.imul(ah6, bl6)
hi += Math.imul(ah6, bh6)
lo += Math.imul(al5, bl7)
mid += Math.imul(al5, bh7)
mid += Math.imul(ah5, bl7)
hi += Math.imul(ah5, bh7)
lo += Math.imul(al4, bl8)
mid += Math.imul(al4, bh8)
mid += Math.imul(ah4, bl8)
hi += Math.imul(ah4, bh8)
lo += Math.imul(al3, bl9)
mid += Math.imul(al3, bh9)
mid += Math.imul(ah3, bl9)
hi += Math.imul(ah3, bh9)
var w12 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w12 >>> 26)
w12 &= 0x3ffffff
/* k = 13 */
lo = Math.imul(al9, bl4)
mid = Math.imul(al9, bh4)
mid += Math.imul(ah9, bl4)
hi = Math.imul(ah9, bh4)
lo += Math.imul(al8, bl5)
mid += Math.imul(al8, bh5)
mid += Math.imul(ah8, bl5)
hi += Math.imul(ah8, bh5)
lo += Math.imul(al7, bl6)
mid += Math.imul(al7, bh6)
mid += Math.imul(ah7, bl6)
hi += Math.imul(ah7, bh6)
lo += Math.imul(al6, bl7)
mid += Math.imul(al6, bh7)
mid += Math.imul(ah6, bl7)
hi += Math.imul(ah6, bh7)
lo += Math.imul(al5, bl8)
mid += Math.imul(al5, bh8)
mid += Math.imul(ah5, bl8)
hi += Math.imul(ah5, bh8)
lo += Math.imul(al4, bl9)
mid += Math.imul(al4, bh9)
mid += Math.imul(ah4, bl9)
hi += Math.imul(ah4, bh9)
var w13 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w13 >>> 26)
w13 &= 0x3ffffff
/* k = 14 */
lo = Math.imul(al9, bl5)
mid = Math.imul(al9, bh5)
mid += Math.imul(ah9, bl5)
hi = Math.imul(ah9, bh5)
lo += Math.imul(al8, bl6)
mid += Math.imul(al8, bh6)
mid += Math.imul(ah8, bl6)
hi += Math.imul(ah8, bh6)
lo += Math.imul(al7, bl7)
mid += Math.imul(al7, bh7)
mid += Math.imul(ah7, bl7)
hi += Math.imul(ah7, bh7)
lo += Math.imul(al6, bl8)
mid += Math.imul(al6, bh8)
mid += Math.imul(ah6, bl8)
hi += Math.imul(ah6, bh8)
lo += Math.imul(al5, bl9)
mid += Math.imul(al5, bh9)
mid += Math.imul(ah5, bl9)
hi += Math.imul(ah5, bh9)
var w14 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w14 >>> 26)
w14 &= 0x3ffffff
/* k = 15 */
lo = Math.imul(al9, bl6)
mid = Math.imul(al9, bh6)
mid += Math.imul(ah9, bl6)
hi = Math.imul(ah9, bh6)
lo += Math.imul(al8, bl7)
mid += Math.imul(al8, bh7)
mid += Math.imul(ah8, bl7)
hi += Math.imul(ah8, bh7)
lo += Math.imul(al7, bl8)
mid += Math.imul(al7, bh8)
mid += Math.imul(ah7, bl8)
hi += Math.imul(ah7, bh8)
lo += Math.imul(al6, bl9)
mid += Math.imul(al6, bh9)
mid += Math.imul(ah6, bl9)
hi += Math.imul(ah6, bh9)
var w15 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w15 >>> 26)
w15 &= 0x3ffffff
/* k = 16 */
lo = Math.imul(al9, bl7)
mid = Math.imul(al9, bh7)
mid += Math.imul(ah9, bl7)
hi = Math.imul(ah9, bh7)
lo += Math.imul(al8, bl8)
mid += Math.imul(al8, bh8)
mid += Math.imul(ah8, bl8)
hi += Math.imul(ah8, bh8)
lo += Math.imul(al7, bl9)
mid += Math.imul(al7, bh9)
mid += Math.imul(ah7, bl9)
hi += Math.imul(ah7, bh9)
var w16 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w16 >>> 26)
w16 &= 0x3ffffff
/* k = 17 */
lo = Math.imul(al9, bl8)
mid = Math.imul(al9, bh8)
mid += Math.imul(ah9, bl8)
hi = Math.imul(ah9, bh8)
lo += Math.imul(al8, bl9)
mid += Math.imul(al8, bh9)
mid += Math.imul(ah8, bl9)
hi += Math.imul(ah8, bh9)
var w17 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w17 >>> 26)
w17 &= 0x3ffffff
/* k = 18 */
lo = Math.imul(al9, bl9)
mid = Math.imul(al9, bh9)
mid += Math.imul(ah9, bl9)
hi = Math.imul(ah9, bh9)
var w18 = c + lo + ((mid & 0x1fff) << 13)
c = hi + (mid >>> 13) + (w18 >>> 26)
w18 &= 0x3ffffff
o[0] = w0
o[1] = w1
o[2] = w2
o[3] = w3
o[4] = w4
o[5] = w5
o[6] = w6
o[7] = w7
o[8] = w8
o[9] = w9
o[10] = w10
o[11] = w11
o[12] = w12
o[13] = w13
o[14] = w14
o[15] = w15
o[16] = w16
o[17] = w17
o[18] = w18
if (c !== 0) {
o[19] = c
out.length++
}
return out
}
},{}],46:[function(require,module,exports){
'use strict'
var BN = require('./bn')
function ECJPoint (x, y, z) {
if (x === null && y === null && z === null) {
this.x = ECJPoint.one
this.y = ECJPoint.one
this.z = ECJPoint.zero
} else {
this.x = x
this.y = y
this.z = z
}
this.zOne = this.z === ECJPoint.one
}
ECJPoint.zero = BN.fromNumber(0)
ECJPoint.one = BN.fromNumber(1)
ECJPoint.prototype.neg = function () {
if (this.inf) return this
return new ECJPoint(this.x, this.y.redNeg(), this.z)
}
ECJPoint.prototype.add = function (p) {
// O + P = P
if (this.inf) return p
// P + O = P
if (p.inf) return this
// http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#addition-add-1998-cmo-2
// 12M + 4S + 7A
var pz2 = p.z.redSqr()
var z2 = this.z.redSqr()
var u1 = this.x.redMul(pz2)
var u2 = p.x.redMul(z2)
var s1 = this.y.redMul(pz2).redMul(p.z)
var s2 = p.y.redMul(z2).redMul(this.z)
var h = u1.redSub(u2)
var r = s1.redSub(s2)
if (h.isZero()) {
if (r.isZero()) return this.dbl()
return new ECJPoint(null, null, null)
}
var h2 = h.redSqr()
var v = u1.redMul(h2)
var h3 = h2.redMul(h)
var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v)
var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3))
var nz = this.z.redMul(p.z).redMul(h)
return new ECJPoint(nx, ny, nz)
}
ECJPoint.prototype.mixedAdd = function (p) {
// O + P = P
if (this.inf) return p.toECJPoint()
// P + O = P
if (p.inf) return this
// http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#addition-add-1998-cmo-2
// with p.z = 1
// 8M + 3S + 7A
var z2 = this.z.redSqr()
var u1 = this.x
var u2 = p.x.redMul(z2)
var s1 = this.y
var s2 = p.y.redMul(z2).redMul(this.z)
var h = u1.redSub(u2)
var r = s1.redSub(s2)
if (h.isZero()) {
if (r.isZero()) return this.dbl()
return new ECJPoint(null, null, null)
}
var h2 = h.redSqr()
var v = u1.redMul(h2)
var h3 = h2.redMul(h)
var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v)
var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3))
var nz = this.z.redMul(h)
return new ECJPoint(nx, ny, nz)
}
ECJPoint.prototype.dbl = function () {
if (this.inf) return this
var nx
var ny
var nz
// Z = 1
if (this.zOne) {
// http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#doubling-mdbl-2007-bl
// 1M + 5S + 6A + 3*2 + 1*3 + 1*8
// XX = X1^2
var xx = this.x.redSqr()
// YY = Y1^2
var yy = this.y.redSqr()
// YYYY = YY^2
var yyyy = yy.redSqr()
// S = 2 * ((X1 + YY)^2 - XX - YYYY)
var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy)
s = s.redIAdd(s)
// M = 3 * XX
var m = xx.redAdd(xx).redIAdd(xx)
// T = M ^ 2 - 2*S
var t = m.redSqr().redISub(s).redISub(s)
// 8 * YYYY
var yyyy8 = yyyy.redIAdd(yyyy).redIAdd(yyyy).redIAdd(yyyy)
// X3 = T
nx = t
// Y3 = M * (S - T) - 8 * YYYY
ny = m.redMul(s.redISub(t)).redISub(yyyy8)
// Z3 = 2*Y1
nz = this.y.redAdd(this.y)
} else {
// http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#doubling-dbl-2009-l
// 2M + 5S + 6A + 3*2 + 1*3 + 1*8
// A = X1^2
var a = this.x.redSqr()
// B = Y1^2
var b = this.y.redSqr()
// C = B^2
var c = b.redSqr()
// D = 2 * ((X1 + B)^2 - A - C)
var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c)
d = d.redIAdd(d)
// E = 3 * A
var e = a.redAdd(a).redIAdd(a)
// F = E^2
var f = e.redSqr()
// 8 * C
var c8 = c.redIAdd(c).redIAdd(c).redIAdd(c)
// X3 = F - 2 * D
nx = f.redISub(d).redISub(d)
// Y3 = E * (D - X3) - 8 * C
ny = e.redMul(d.redISub(nx)).redISub(c8)
// Z3 = 2 * Y1 * Z1
nz = this.y.redMul(this.z)
nz = nz.redIAdd(nz)
}
return new ECJPoint(nx, ny, nz)
}
ECJPoint.prototype.dblp = function (pow) {
if (pow === 0 || this.inf) return this
var point = this
for (var i = 0; i < pow; i++) point = point.dbl()
return point
}
Object.defineProperty(ECJPoint.prototype, 'inf', {
enumerable: true,
get: function () {
return this.z.isZero()
}
})
module.exports = ECJPoint
},{"./bn":44}],47:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var BN = require('./bn')
var ECJPoint = require('./ecjpoint')
function ECPoint (x, y) {
if (x === null && y === null) {
this.x = this.y = null
this.inf = true
} else {
this.x = x
this.y = y
this.inf = false
}
}
ECPoint.fromPublicKey = function (publicKey) {
var first = publicKey[0]
var x
var y
if (publicKey.length === 33 && (first === 0x02 || first === 0x03)) {
x = BN.fromBuffer(publicKey.slice(1, 33))
// overflow
if (x.ucmp(BN.p) >= 0) return null
// create from X
y = x.redSqr().redMul(x).redIAdd7().redSqrt()
if (y === null) return null
if ((first === 0x03) !== y.isOdd()) y = y.redNeg()
return new ECPoint(x, y)
}
if (publicKey.length === 65 && (first === 0x04 || first === 0x06 || first === 0x07)) {
x = BN.fromBuffer(publicKey.slice(1, 33))
y = BN.fromBuffer(publicKey.slice(33, 65))
// overflow
if (x.ucmp(BN.p) >= 0 || y.ucmp(BN.p) >= 0) return null
// is odd flag
if ((first === 0x06 || first === 0x07) && y.isOdd() !== (first === 0x07)) return null
// x*x*x + 7 = y*y
if (x.redSqr().redMul(x).redIAdd7().ucmp(y.redSqr()) !== 0) return null
return new ECPoint(x, y)
}
return null
}
ECPoint.prototype.toPublicKey = function (compressed) {
var x = this.x
var y = this.y
var publicKey
if (compressed) {
publicKey = Buffer.alloc(33)
publicKey[0] = y.isOdd() ? 0x03 : 0x02
x.toBuffer().copy(publicKey, 1)
} else {
publicKey = Buffer.alloc(65)
publicKey[0] = 0x04
x.toBuffer().copy(publicKey, 1)
y.toBuffer().copy(publicKey, 33)
}
return publicKey
}
ECPoint.fromECJPoint = function (p) {
if (p.inf) return new ECPoint(null, null)
var zinv = p.z.redInvm()
var zinv2 = zinv.redSqr()
var ax = p.x.redMul(zinv2)
var ay = p.y.redMul(zinv2).redMul(zinv)
return new ECPoint(ax, ay)
}
ECPoint.prototype.toECJPoint = function () {
if (this.inf) return new ECJPoint(null, null, null)
return new ECJPoint(this.x, this.y, ECJPoint.one)
}
ECPoint.prototype.neg = function () {
if (this.inf) return this
return new ECPoint(this.x, this.y.redNeg())
}
ECPoint.prototype.add = function (p) {
// O + P = P
if (this.inf) return p
// P + O = P
if (p.inf) return this
if (this.x.ucmp(p.x) === 0) {
// P + P = 2P
if (this.y.ucmp(p.y) === 0) return this.dbl()
// P + (-P) = O
return new ECPoint(null, null)
}
// s = (y - yp) / (x - xp)
// nx = s^2 - x - xp
// ny = s * (x - nx) - y
var s = this.y.redSub(p.y)
if (!s.isZero()) s = s.redMul(this.x.redSub(p.x).redInvm())
var nx = s.redSqr().redISub(this.x).redISub(p.x)
var ny = s.redMul(this.x.redSub(nx)).redISub(this.y)
return new ECPoint(nx, ny)
}
ECPoint.prototype.dbl = function () {
if (this.inf) return this
// 2P = O
var yy = this.y.redAdd(this.y)
if (yy.isZero()) return new ECPoint(null, null)
// s = (3 * x^2) / (2 * y)
// nx = s^2 - 2*x
// ny = s * (x - nx) - y
var x2 = this.x.redSqr()
var s = x2.redAdd(x2).redIAdd(x2).redMul(yy.redInvm())
var nx = s.redSqr().redISub(this.x.redAdd(this.x))
var ny = s.redMul(this.x.redSub(nx)).redISub(this.y)
return new ECPoint(nx, ny)
}
ECPoint.prototype.mul = function (num) {
// Algorithm 3.36 Window NAF method for point multiplication
var nafPoints = this._getNAFPoints(4)
var points = nafPoints.points
// Get NAF form
var naf = num.getNAF(nafPoints.wnd)
// Add `this`*(N+1) for every w-NAF index
var acc = new ECJPoint(null, null, null)
for (var i = naf.length - 1; i >= 0; i--) {
// Count zeroes
for (var k = 0; i >= 0 && naf[i] === 0; i--, ++k);
if (i >= 0) k += 1
acc = acc.dblp(k)
if (i < 0) break
// J +- P
var z = naf[i]
if (z > 0) {
acc = acc.mixedAdd(points[(z - 1) >> 1])
} else {
acc = acc.mixedAdd(points[(-z - 1) >> 1].neg())
}
}
return ECPoint.fromECJPoint(acc)
}
ECPoint.prototype._getNAFPoints1 = function () {
return { wnd: 1, points: [this] }
}
ECPoint.prototype._getNAFPoints = function (wnd) {
var points = new Array((1 << wnd) - 1)
points[0] = this
var dbl = this.dbl()
for (var i = 1; i < points.length; ++i) points[i] = points[i - 1].add(dbl)
return { wnd: wnd, points: points }
}
module.exports = ECPoint
},{"./bn":44,"./ecjpoint":46,"safe-buffer":43}],48:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var BN = require('./bn')
var ECPoint = require('./ecpoint')
var ECJPoint = require('./ecjpoint')
function ECPointG () {
this.x = BN.fromBuffer(Buffer.from('79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798', 'hex'))
this.y = BN.fromBuffer(Buffer.from('483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8', 'hex'))
this.inf = false
this._precompute()
}
ECPointG.prototype._precompute = function () {
var ecpoint = new ECPoint(this.x, this.y)
var dstep = 4
var points = new Array(1 + Math.ceil(257 / dstep))
var acc = points[0] = ecpoint
for (var i = 1; i < points.length; ++i) {
for (var j = 0; j < dstep; j++) acc = acc.dbl()
points[i] = acc
}
this.precomputed = {
naf: ecpoint._getNAFPoints(7),
doubles: {
step: dstep,
points: points,
negpoints: points.map(function (p) { return p.neg() })
}
}
}
ECPointG.prototype.mul = function (num) {
// Algorithm 3.42 Fixed-base NAF windowing method for point multiplication
var step = this.precomputed.doubles.step
var points = this.precomputed.doubles.points
var negpoints = this.precomputed.doubles.negpoints
var naf = num.getNAF(1)
var I = ((1 << (step + 1)) - (step % 2 === 0 ? 2 : 1)) / 3
// Translate into more windowed form
var repr = []
for (var j = 0; j < naf.length; j += step) {
var nafW = 0
for (var k = j + step - 1; k >= j; k--) nafW = (nafW << 1) + naf[k]
repr.push(nafW)
}
var a = new ECJPoint(null, null, null)
var b = new ECJPoint(null, null, null)
for (var i = I; i > 0; i--) {
for (var jj = 0; jj < repr.length; jj++) {
if (repr[jj] === i) {
b = b.mixedAdd(points[jj])
} else if (repr[jj] === -i) {
b = b.mixedAdd(negpoints[jj])
}
}
a = a.add(b)
}
return ECPoint.fromECJPoint(a)
}
ECPointG.prototype.mulAdd = function (k1, p2, k2) {
var nafPointsP1 = this.precomputed.naf
var nafPointsP2 = p2._getNAFPoints1()
var wnd = [nafPointsP1.points, nafPointsP2.points]
var naf = [k1.getNAF(nafPointsP1.wnd), k2.getNAF(nafPointsP2.wnd)]
var acc = new ECJPoint(null, null, null)
var tmp = [null, null]
for (var i = Math.max(naf[0].length, naf[1].length); i >= 0; i--) {
var k = 0
for (; i >= 0; ++k, --i) {
tmp[0] = naf[0][i] | 0
tmp[1] = naf[1][i] | 0
if (tmp[0] !== 0 || tmp[1] !== 0) break
}
if (i >= 0) k += 1
acc = acc.dblp(k)
if (i < 0) break
for (var jj = 0; jj < 2; jj++) {
var z = tmp[jj]
var p
if (z === 0) {
continue
} else if (z > 0) {
p = wnd[jj][z >> 1]
} else if (z < 0) {
p = wnd[jj][-z >> 1].neg()
}
// hack: ECPoint detection
if (p.z === undefined) {
acc = acc.mixedAdd(p)
} else {
acc = acc.add(p)
}
}
}
return acc
}
module.exports = new ECPointG()
},{"./bn":44,"./ecjpoint":46,"./ecpoint":47,"safe-buffer":43}],49:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var createHash = require('create-hash')
var HmacDRBG = require('drbg.js/hmac')
var messages = require('../messages.json')
var BN = require('./bn')
var ECPoint = require('./ecpoint')
var g = require('./ecpointg')
exports.privateKeyVerify = function (privateKey) {
var bn = BN.fromBuffer(privateKey)
return !(bn.isOverflow() || bn.isZero())
}
exports.privateKeyExport = function (privateKey, compressed) {
var d = BN.fromBuffer(privateKey)
if (d.isOverflow() || d.isZero()) throw new Error(messages.EC_PRIVATE_KEY_EXPORT_DER_FAIL)
return g.mul(d).toPublicKey(compressed)
}
exports.privateKeyNegate = function (privateKey) {
var bn = BN.fromBuffer(privateKey)
if (bn.isZero()) return Buffer.alloc(32)
if (bn.ucmp(BN.n) > 0) bn.isub(BN.n)
return BN.n.sub(bn).toBuffer()
}
exports.privateKeyModInverse = function (privateKey) {
var bn = BN.fromBuffer(privateKey)
if (bn.isOverflow() || bn.isZero()) throw new Error(messages.EC_PRIVATE_KEY_RANGE_INVALID)
return bn.uinvm().toBuffer()
}
exports.privateKeyTweakAdd = function (privateKey, tweak) {
var bn = BN.fromBuffer(tweak)
if (bn.isOverflow()) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_ADD_FAIL)
bn.iadd(BN.fromBuffer(privateKey))
if (bn.isOverflow()) bn.isub(BN.n)
if (bn.isZero()) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_ADD_FAIL)
return bn.toBuffer()
}
exports.privateKeyTweakMul = function (privateKey, tweak) {
var bn = BN.fromBuffer(tweak)
if (bn.isOverflow() || bn.isZero()) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_MUL_FAIL)
var d = BN.fromBuffer(privateKey)
return bn.umul(d).ureduce().toBuffer()
}
exports.publicKeyCreate = function (privateKey, compressed) {
var d = BN.fromBuffer(privateKey)
if (d.isOverflow() || d.isZero()) throw new Error(messages.EC_PUBLIC_KEY_CREATE_FAIL)
return g.mul(d).toPublicKey(compressed)
}
exports.publicKeyConvert = function (publicKey, compressed) {
var point = ECPoint.fromPublicKey(publicKey)
if (point === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
return point.toPublicKey(compressed)
}
exports.publicKeyVerify = function (publicKey) {
return ECPoint.fromPublicKey(publicKey) !== null
}
exports.publicKeyTweakAdd = function (publicKey, tweak, compressed) {
var point = ECPoint.fromPublicKey(publicKey)
if (point === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
tweak = BN.fromBuffer(tweak)
if (tweak.isOverflow()) throw new Error(messages.EC_PUBLIC_KEY_TWEAK_ADD_FAIL)
return g.mul(tweak).add(point).toPublicKey(compressed)
}
exports.publicKeyTweakMul = function (publicKey, tweak, compressed) {
var point = ECPoint.fromPublicKey(publicKey)
if (point === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
tweak = BN.fromBuffer(tweak)
if (tweak.isOverflow() || tweak.isZero()) throw new Error(messages.EC_PUBLIC_KEY_TWEAK_MUL_FAIL)
return point.mul(tweak).toPublicKey(compressed)
}
exports.publicKeyCombine = function (publicKeys, compressed) {
var points = new Array(publicKeys.length)
for (var i = 0; i < publicKeys.length; ++i) {
points[i] = ECPoint.fromPublicKey(publicKeys[i])
if (points[i] === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
}
var point = points[0]
for (var j = 1; j < points.length; ++j) point = point.add(points[j])
if (point.inf) throw new Error(messages.EC_PUBLIC_KEY_COMBINE_FAIL)
return point.toPublicKey(compressed)
}
exports.signatureNormalize = function (signature) {
var r = BN.fromBuffer(signature.slice(0, 32))
var s = BN.fromBuffer(signature.slice(32, 64))
if (r.isOverflow() || s.isOverflow()) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
var result = Buffer.from(signature)
if (s.isHigh()) BN.n.sub(s).toBuffer().copy(result, 32)
return result
}
exports.signatureExport = function (signature) {
var r = signature.slice(0, 32)
var s = signature.slice(32, 64)
if (BN.fromBuffer(r).isOverflow() || BN.fromBuffer(s).isOverflow()) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
return { r: r, s: s }
}
exports.signatureImport = function (sigObj) {
var r = BN.fromBuffer(sigObj.r)
if (r.isOverflow()) r = BN.fromNumber(0)
var s = BN.fromBuffer(sigObj.s)
if (s.isOverflow()) s = BN.fromNumber(0)
return Buffer.concat([r.toBuffer(), s.toBuffer()])
}
exports.sign = function (message, privateKey, noncefn, data) {
var d = BN.fromBuffer(privateKey)
if (d.isOverflow() || d.isZero()) throw new Error(messages.ECDSA_SIGN_FAIL)
if (noncefn === null) {
var drbg = new HmacDRBG('sha256', privateKey, message, data)
noncefn = function () { return drbg.generate(32) }
}
var bnMessage = BN.fromBuffer(message)
for (var count = 0; ; ++count) {
var nonce = noncefn(message, privateKey, null, data, count)
if (!Buffer.isBuffer(nonce) || nonce.length !== 32) throw new Error(messages.ECDSA_SIGN_FAIL)
var k = BN.fromBuffer(nonce)
if (k.isOverflow() || k.isZero()) continue
var kp = g.mul(k)
var r = kp.x.fireduce()
if (r.isZero()) continue
var s = k.uinvm().umul(r.umul(d).ureduce().iadd(bnMessage).fireduce()).ureduce()
if (s.isZero()) continue
var recovery = (kp.x.ucmp(r) !== 0 ? 2 : 0) | (kp.y.isOdd() ? 1 : 0)
if (s.isHigh()) {
s = BN.n.sub(s)
recovery ^= 1
}
return {
signature: Buffer.concat([r.toBuffer(), s.toBuffer()]),
recovery: recovery
}
}
}
exports.verify = function (message, signature, publicKey) {
var sigr = BN.fromBuffer(signature.slice(0, 32))
var sigs = BN.fromBuffer(signature.slice(32, 64))
if (sigr.isOverflow() || sigs.isOverflow()) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
if (sigs.isHigh() || sigr.isZero() || sigs.isZero()) return false
var pub = ECPoint.fromPublicKey(publicKey)
if (pub === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
var sinv = sigs.uinvm()
var u1 = sinv.umul(BN.fromBuffer(message)).ureduce()
var u2 = sinv.umul(sigr).ureduce()
var point = g.mulAdd(u1, pub, u2)
if (point.inf) return false
// return ECPoint.fromECJPoint(point).x.fireduce().ucmp(sigr) === 0
// Inversion-free
var z2 = point.z.redSqr()
if (sigr.redMul(z2).ucmp(point.x) === 0) return true
if (sigr.ucmp(BN.psn) >= 0) return false
return sigr.iadd(BN.psn).redMul(z2).ucmp(point.x) === 0
}
exports.recover = function (message, signature, recovery, compressed) {
var sigr = BN.fromBuffer(signature.slice(0, 32))
var sigs = BN.fromBuffer(signature.slice(32, 64))
if (sigr.isOverflow() || sigs.isOverflow()) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
do {
if (sigr.isZero() || sigs.isZero()) break
var kpx = sigr
if (recovery >> 1) {
if (kpx.ucmp(BN.psn) >= 0) break
kpx = sigr.add(BN.n)
}
var kpPublicKey = Buffer.concat([Buffer.from([0x02 + (recovery & 0x01)]), kpx.toBuffer()])
var kp = ECPoint.fromPublicKey(kpPublicKey)
if (kp === null) break
var rInv = sigr.uinvm()
var s1 = BN.n.sub(BN.fromBuffer(message)).umul(rInv).ureduce()
var s2 = sigs.umul(rInv).ureduce()
var point = ECPoint.fromECJPoint(g.mulAdd(s1, kp, s2))
return point.toPublicKey(compressed)
} while (false)
throw new Error(messages.ECDSA_RECOVER_FAIL)
}
exports.ecdh = function (publicKey, privateKey) {
var shared = exports.ecdhUnsafe(publicKey, privateKey, true)
return createHash('sha256').update(shared).digest()
}
exports.ecdhUnsafe = function (publicKey, privateKey, compressed) {
var point = ECPoint.fromPublicKey(publicKey)
if (point === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
var scalar = BN.fromBuffer(privateKey)
if (scalar.isOverflow() || scalar.isZero()) throw new Error(messages.ECDH_FAIL)
return point.mul(scalar).toPublicKey(compressed)
}
},{"../messages.json":50,"./bn":44,"./ecpoint":47,"./ecpointg":48,"create-hash":33,"drbg.js/hmac":37,"safe-buffer":43}],50:[function(require,module,exports){
module.exports={
"COMPRESSED_TYPE_INVALID": "compressed should be a boolean",
"EC_PRIVATE_KEY_TYPE_INVALID": "private key should be a Buffer",
"EC_PRIVATE_KEY_LENGTH_INVALID": "private key length is invalid",
"EC_PRIVATE_KEY_RANGE_INVALID": "private key range is invalid",
"EC_PRIVATE_KEY_TWEAK_ADD_FAIL": "tweak out of range or resulting private key is invalid",
"EC_PRIVATE_KEY_TWEAK_MUL_FAIL": "tweak out of range",
"EC_PRIVATE_KEY_EXPORT_DER_FAIL": "couldn't export to DER format",
"EC_PRIVATE_KEY_IMPORT_DER_FAIL": "couldn't import from DER format",
"EC_PUBLIC_KEYS_TYPE_INVALID": "public keys should be an Array",
"EC_PUBLIC_KEYS_LENGTH_INVALID": "public keys Array should have at least 1 element",
"EC_PUBLIC_KEY_TYPE_INVALID": "public key should be a Buffer",
"EC_PUBLIC_KEY_LENGTH_INVALID": "public key length is invalid",
"EC_PUBLIC_KEY_PARSE_FAIL": "the public key could not be parsed or is invalid",
"EC_PUBLIC_KEY_CREATE_FAIL": "private was invalid, try again",
"EC_PUBLIC_KEY_TWEAK_ADD_FAIL": "tweak out of range or resulting public key is invalid",
"EC_PUBLIC_KEY_TWEAK_MUL_FAIL": "tweak out of range",
"EC_PUBLIC_KEY_COMBINE_FAIL": "the sum of the public keys is not valid",
"ECDH_FAIL": "scalar was invalid (zero or overflow)",
"ECDSA_SIGNATURE_TYPE_INVALID": "signature should be a Buffer",
"ECDSA_SIGNATURE_LENGTH_INVALID": "signature length is invalid",
"ECDSA_SIGNATURE_PARSE_FAIL": "couldn't parse signature",
"ECDSA_SIGNATURE_PARSE_DER_FAIL": "couldn't parse DER signature",
"ECDSA_SIGNATURE_SERIALIZE_DER_FAIL": "couldn't serialize signature to DER format",
"ECDSA_SIGN_FAIL": "nonce generation function failed or private key is invalid",
"ECDSA_RECOVER_FAIL": "couldn't recover public key from signature",
"MSG32_TYPE_INVALID": "message should be a Buffer",
"MSG32_LENGTH_INVALID": "message length is invalid",
"OPTIONS_TYPE_INVALID": "options should be an Object",
"OPTIONS_DATA_TYPE_INVALID": "options.data should be a Buffer",
"OPTIONS_DATA_LENGTH_INVALID": "options.data length is invalid",
"OPTIONS_NONCEFN_TYPE_INVALID": "options.noncefn should be a Function",
"RECOVERY_ID_TYPE_INVALID": "recovery should be a Number",
"RECOVERY_ID_VALUE_INVALID": "recovery should have value between -1 and 4",
"TWEAK_TYPE_INVALID": "tweak should be a Buffer",
"TWEAK_LENGTH_INVALID": "tweak length is invalid"
}
},{}],51:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
// prototype class for hash functions
function Hash (blockSize, finalSize) {
this._block = Buffer.alloc(blockSize)
this._finalSize = finalSize
this._blockSize = blockSize
this._len = 0
}
Hash.prototype.update = function (data, enc) {
if (typeof data === 'string') {
enc = enc || 'utf8'
data = Buffer.from(data, enc)
}
var block = this._block
var blockSize = this._blockSize
var length = data.length
var accum = this._len
for (var offset = 0; offset < length;) {
var assigned = accum % blockSize
var remainder = Math.min(length - offset, blockSize - assigned)
for (var i = 0; i < remainder; i++) {
block[assigned + i] = data[offset + i]
}
accum += remainder
offset += remainder
if ((accum % blockSize) === 0) {
this._update(block)
}
}
this._len += length
return this
}
Hash.prototype.digest = function (enc) {
var rem = this._len % this._blockSize
this._block[rem] = 0x80
// zero (rem + 1) trailing bits, where (rem + 1) is the smallest
// non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize
this._block.fill(0, rem + 1)
if (rem >= this._finalSize) {
this._update(this._block)
this._block.fill(0)
}
var bits = this._len * 8
// uint32
if (bits <= 0xffffffff) {
this._block.writeUInt32BE(bits, this._blockSize - 4)
// uint64
} else {
var lowBits = (bits & 0xffffffff) >>> 0
var highBits = (bits - lowBits) / 0x100000000
this._block.writeUInt32BE(highBits, this._blockSize - 8)
this._block.writeUInt32BE(lowBits, this._blockSize - 4)
}
this._update(this._block)
var hash = this._hash()
return enc ? hash.toString(enc) : hash
}
Hash.prototype._update = function () {
throw new Error('_update must be implemented by subclass')
}
module.exports = Hash
},{"safe-buffer":43}],52:[function(require,module,exports){
var exports = module.exports = function SHA (algorithm) {
algorithm = algorithm.toLowerCase()
var Algorithm = exports[algorithm]
if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')
return new Algorithm()
}
exports.sha = require('./sha')
exports.sha1 = require('./sha1')
exports.sha224 = require('./sha224')
exports.sha256 = require('./sha256')
exports.sha384 = require('./sha384')
exports.sha512 = require('./sha512')
},{"./sha":53,"./sha1":54,"./sha224":55,"./sha256":56,"./sha384":57,"./sha512":58}],53:[function(require,module,exports){
/*
* A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
* in FIPS PUB 180-1
* This source code is derived from sha1.js of the same repository.
* The difference between SHA-0 and SHA-1 is just a bitwise rotate left
* operation was added.
*/
var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer
var K = [
0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
]
var W = new Array(80)
function Sha () {
this.init()
this._w = W
Hash.call(this, 64, 56)
}
inherits(Sha, Hash)
Sha.prototype.init = function () {
this._a = 0x67452301
this._b = 0xefcdab89
this._c = 0x98badcfe
this._d = 0x10325476
this._e = 0xc3d2e1f0
return this
}
function rotl5 (num) {
return (num << 5) | (num >>> 27)
}
function rotl30 (num) {
return (num << 30) | (num >>> 2)
}
function ft (s, b, c, d) {
if (s === 0) return (b & c) | ((~b) & d)
if (s === 2) return (b & c) | (b & d) | (c & d)
return b ^ c ^ d
}
Sha.prototype._update = function (M) {
var W = this._w
var a = this._a | 0
var b = this._b | 0
var c = this._c | 0
var d = this._d | 0
var e = this._e | 0
for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]
for (var j = 0; j < 80; ++j) {
var s = ~~(j / 20)
var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
e = d
d = c
c = rotl30(b)
b = a
a = t
}
this._a = (a + this._a) | 0
this._b = (b + this._b) | 0
this._c = (c + this._c) | 0
this._d = (d + this._d) | 0
this._e = (e + this._e) | 0
}
Sha.prototype._hash = function () {
var H = Buffer.allocUnsafe(20)
H.writeInt32BE(this._a | 0, 0)
H.writeInt32BE(this._b | 0, 4)
H.writeInt32BE(this._c | 0, 8)
H.writeInt32BE(this._d | 0, 12)
H.writeInt32BE(this._e | 0, 16)
return H
}
module.exports = Sha
},{"./hash":51,"inherits":40,"safe-buffer":43}],54:[function(require,module,exports){
/*
* A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
* in FIPS PUB 180-1
* Version 2.1a Copyright Paul Johnston 2000 - 2002.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
* Distributed under the BSD License
* See http://pajhome.org.uk/crypt/md5 for details.
*/
var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer
var K = [
0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
]
var W = new Array(80)
function Sha1 () {
this.init()
this._w = W
Hash.call(this, 64, 56)
}
inherits(Sha1, Hash)
Sha1.prototype.init = function () {
this._a = 0x67452301
this._b = 0xefcdab89
this._c = 0x98badcfe
this._d = 0x10325476
this._e = 0xc3d2e1f0
return this
}
function rotl1 (num) {
return (num << 1) | (num >>> 31)
}
function rotl5 (num) {
return (num << 5) | (num >>> 27)
}
function rotl30 (num) {
return (num << 30) | (num >>> 2)
}
function ft (s, b, c, d) {
if (s === 0) return (b & c) | ((~b) & d)
if (s === 2) return (b & c) | (b & d) | (c & d)
return b ^ c ^ d
}
Sha1.prototype._update = function (M) {
var W = this._w
var a = this._a | 0
var b = this._b | 0
var c = this._c | 0
var d = this._d | 0
var e = this._e | 0
for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16])
for (var j = 0; j < 80; ++j) {
var s = ~~(j / 20)
var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
e = d
d = c
c = rotl30(b)
b = a
a = t
}
this._a = (a + this._a) | 0
this._b = (b + this._b) | 0
this._c = (c + this._c) | 0
this._d = (d + this._d) | 0
this._e = (e + this._e) | 0
}
Sha1.prototype._hash = function () {
var H = Buffer.allocUnsafe(20)
H.writeInt32BE(this._a | 0, 0)
H.writeInt32BE(this._b | 0, 4)
H.writeInt32BE(this._c | 0, 8)
H.writeInt32BE(this._d | 0, 12)
H.writeInt32BE(this._e | 0, 16)
return H
}
module.exports = Sha1
},{"./hash":51,"inherits":40,"safe-buffer":43}],55:[function(require,module,exports){
/**
* A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
* in FIPS 180-2
* Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
*
*/
var inherits = require('inherits')
var Sha256 = require('./sha256')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer
var W = new Array(64)
function Sha224 () {
this.init()
this._w = W // new Array(64)
Hash.call(this, 64, 56)
}
inherits(Sha224, Sha256)
Sha224.prototype.init = function () {
this._a = 0xc1059ed8
this._b = 0x367cd507
this._c = 0x3070dd17
this._d = 0xf70e5939
this._e = 0xffc00b31
this._f = 0x68581511
this._g = 0x64f98fa7
this._h = 0xbefa4fa4
return this
}
Sha224.prototype._hash = function () {
var H = Buffer.allocUnsafe(28)
H.writeInt32BE(this._a, 0)
H.writeInt32BE(this._b, 4)
H.writeInt32BE(this._c, 8)
H.writeInt32BE(this._d, 12)
H.writeInt32BE(this._e, 16)
H.writeInt32BE(this._f, 20)
H.writeInt32BE(this._g, 24)
return H
}
module.exports = Sha224
},{"./hash":51,"./sha256":56,"inherits":40,"safe-buffer":43}],56:[function(require,module,exports){
/**
* A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
* in FIPS 180-2
* Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
*
*/
var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer
var K = [
0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
]
var W = new Array(64)
function Sha256 () {
this.init()
this._w = W // new Array(64)
Hash.call(this, 64, 56)
}
inherits(Sha256, Hash)
Sha256.prototype.init = function () {
this._a = 0x6a09e667
this._b = 0xbb67ae85
this._c = 0x3c6ef372
this._d = 0xa54ff53a
this._e = 0x510e527f
this._f = 0x9b05688c
this._g = 0x1f83d9ab
this._h = 0x5be0cd19
return this
}
function ch (x, y, z) {
return z ^ (x & (y ^ z))
}
function maj (x, y, z) {
return (x & y) | (z & (x | y))
}
function sigma0 (x) {
return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
}
function sigma1 (x) {
return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
}
function gamma0 (x) {
return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
}
function gamma1 (x) {
return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
}
Sha256.prototype._update = function (M) {
var W = this._w
var a = this._a | 0
var b = this._b | 0
var c = this._c | 0
var d = this._d | 0
var e = this._e | 0
var f = this._f | 0
var g = this._g | 0
var h = this._h | 0
for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0
for (var j = 0; j < 64; ++j) {
var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0
var T2 = (sigma0(a) + maj(a, b, c)) | 0
h = g
g = f
f = e
e = (d + T1) | 0
d = c
c = b
b = a
a = (T1 + T2) | 0
}
this._a = (a + this._a) | 0
this._b = (b + this._b) | 0
this._c = (c + this._c) | 0
this._d = (d + this._d) | 0
this._e = (e + this._e) | 0
this._f = (f + this._f) | 0
this._g = (g + this._g) | 0
this._h = (h + this._h) | 0
}
Sha256.prototype._hash = function () {
var H = Buffer.allocUnsafe(32)
H.writeInt32BE(this._a, 0)
H.writeInt32BE(this._b, 4)
H.writeInt32BE(this._c, 8)
H.writeInt32BE(this._d, 12)
H.writeInt32BE(this._e, 16)
H.writeInt32BE(this._f, 20)
H.writeInt32BE(this._g, 24)
H.writeInt32BE(this._h, 28)
return H
}
module.exports = Sha256
},{"./hash":51,"inherits":40,"safe-buffer":43}],57:[function(require,module,exports){
var inherits = require('inherits')
var SHA512 = require('./sha512')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer
var W = new Array(160)
function Sha384 () {
this.init()
this._w = W
Hash.call(this, 128, 112)
}
inherits(Sha384, SHA512)
Sha384.prototype.init = function () {
this._ah = 0xcbbb9d5d
this._bh = 0x629a292a
this._ch = 0x9159015a
this._dh = 0x152fecd8
this._eh = 0x67332667
this._fh = 0x8eb44a87
this._gh = 0xdb0c2e0d
this._hh = 0x47b5481d
this._al = 0xc1059ed8
this._bl = 0x367cd507
this._cl = 0x3070dd17
this._dl = 0xf70e5939
this._el = 0xffc00b31
this._fl = 0x68581511
this._gl = 0x64f98fa7
this._hl = 0xbefa4fa4
return this
}
Sha384.prototype._hash = function () {
var H = Buffer.allocUnsafe(48)
function writeInt64BE (h, l, offset) {
H.writeInt32BE(h, offset)
H.writeInt32BE(l, offset + 4)
}
writeInt64BE(this._ah, this._al, 0)
writeInt64BE(this._bh, this._bl, 8)
writeInt64BE(this._ch, this._cl, 16)
writeInt64BE(this._dh, this._dl, 24)
writeInt64BE(this._eh, this._el, 32)
writeInt64BE(this._fh, this._fl, 40)
return H
}
module.exports = Sha384
},{"./hash":51,"./sha512":58,"inherits":40,"safe-buffer":43}],58:[function(require,module,exports){
var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer
var K = [
0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
]
var W = new Array(160)
function Sha512 () {
this.init()
this._w = W
Hash.call(this, 128, 112)
}
inherits(Sha512, Hash)
Sha512.prototype.init = function () {
this._ah = 0x6a09e667
this._bh = 0xbb67ae85
this._ch = 0x3c6ef372
this._dh = 0xa54ff53a
this._eh = 0x510e527f
this._fh = 0x9b05688c
this._gh = 0x1f83d9ab
this._hh = 0x5be0cd19
this._al = 0xf3bcc908
this._bl = 0x84caa73b
this._cl = 0xfe94f82b
this._dl = 0x5f1d36f1
this._el = 0xade682d1
this._fl = 0x2b3e6c1f
this._gl = 0xfb41bd6b
this._hl = 0x137e2179
return this
}
function Ch (x, y, z) {
return z ^ (x & (y ^ z))
}
function maj (x, y, z) {
return (x & y) | (z & (x | y))
}
function sigma0 (x, xl) {
return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
}
function sigma1 (x, xl) {
return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
}
function Gamma0 (x, xl) {
return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
}
function Gamma0l (x, xl) {
return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
}
function Gamma1 (x, xl) {
return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
}
function Gamma1l (x, xl) {
return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
}
function getCarry (a, b) {
return (a >>> 0) < (b >>> 0) ? 1 : 0
}
Sha512.prototype._update = function (M) {
var W = this._w
var ah = this._ah | 0
var bh = this._bh | 0
var ch = this._ch | 0
var dh = this._dh | 0
var eh = this._eh | 0
var fh = this._fh | 0
var gh = this._gh | 0
var hh = this._hh | 0
var al = this._al | 0
var bl = this._bl | 0
var cl = this._cl | 0
var dl = this._dl | 0
var el = this._el | 0
var fl = this._fl | 0
var gl = this._gl | 0
var hl = this._hl | 0
for (var i = 0; i < 32; i += 2) {
W[i] = M.readInt32BE(i * 4)
W[i + 1] = M.readInt32BE(i * 4 + 4)
}
for (; i < 160; i += 2) {
var xh = W[i - 15 * 2]
var xl = W[i - 15 * 2 + 1]
var gamma0 = Gamma0(xh, xl)
var gamma0l = Gamma0l(xl, xh)
xh = W[i - 2 * 2]
xl = W[i - 2 * 2 + 1]
var gamma1 = Gamma1(xh, xl)
var gamma1l = Gamma1l(xl, xh)
// W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
var Wi7h = W[i - 7 * 2]
var Wi7l = W[i - 7 * 2 + 1]
var Wi16h = W[i - 16 * 2]
var Wi16l = W[i - 16 * 2 + 1]
var Wil = (gamma0l + Wi7l) | 0
var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
Wil = (Wil + gamma1l) | 0
Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
Wil = (Wil + Wi16l) | 0
Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0
W[i] = Wih
W[i + 1] = Wil
}
for (var j = 0; j < 160; j += 2) {
Wih = W[j]
Wil = W[j + 1]
var majh = maj(ah, bh, ch)
var majl = maj(al, bl, cl)
var sigma0h = sigma0(ah, al)
var sigma0l = sigma0(al, ah)
var sigma1h = sigma1(eh, el)
var sigma1l = sigma1(el, eh)
// t1 = h + sigma1 + ch + K[j] + W[j]
var Kih = K[j]
var Kil = K[j + 1]
var chh = Ch(eh, fh, gh)
var chl = Ch(el, fl, gl)
var t1l = (hl + sigma1l) | 0
var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
t1l = (t1l + chl) | 0
t1h = (t1h + chh + getCarry(t1l, chl)) | 0
t1l = (t1l + Kil) | 0
t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
t1l = (t1l + Wil) | 0
t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0
// t2 = sigma0 + maj
var t2l = (sigma0l + majl) | 0
var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0
hh = gh
hl = gl
gh = fh
gl = fl
fh = eh
fl = el
el = (dl + t1l) | 0
eh = (dh + t1h + getCarry(el, dl)) | 0
dh = ch
dl = cl
ch = bh
cl = bl
bh = ah
bl = al
al = (t1l + t2l) | 0
ah = (t1h + t2h + getCarry(al, t1l)) | 0
}
this._al = (this._al + al) | 0
this._bl = (this._bl + bl) | 0
this._cl = (this._cl + cl) | 0
this._dl = (this._dl + dl) | 0
this._el = (this._el + el) | 0
this._fl = (this._fl + fl) | 0
this._gl = (this._gl + gl) | 0
this._hl = (this._hl + hl) | 0
this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
}
Sha512.prototype._hash = function () {
var H = Buffer.allocUnsafe(64)
function writeInt64BE (h, l, offset) {
H.writeInt32BE(h, offset)
H.writeInt32BE(l, offset + 4)
}
writeInt64BE(this._ah, this._al, 0)
writeInt64BE(this._bh, this._bl, 8)
writeInt64BE(this._ch, this._cl, 16)
writeInt64BE(this._dh, this._dl, 24)
writeInt64BE(this._eh, this._el, 32)
writeInt64BE(this._fh, this._fl, 40)
writeInt64BE(this._gh, this._gl, 48)
writeInt64BE(this._hh, this._hl, 56)
return H
}
module.exports = Sha512
},{"./hash":51,"inherits":40,"safe-buffer":43}]},{},[31]);