forked from enviPath/enviPy
6279 lines
181 KiB
JavaScript
6279 lines
181 KiB
JavaScript
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.SVGPathData = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
|
|
|
|
},{}],2:[function(require,module,exports){
|
|
(function (global){
|
|
/*!
|
|
* The buffer module from node.js, for the browser.
|
|
*
|
|
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
|
|
* @license MIT
|
|
*/
|
|
/* eslint-disable no-proto */
|
|
|
|
var base64 = require('base64-js')
|
|
var ieee754 = require('ieee754')
|
|
var isArray = require('is-array')
|
|
|
|
exports.Buffer = Buffer
|
|
exports.SlowBuffer = SlowBuffer
|
|
exports.INSPECT_MAX_BYTES = 50
|
|
Buffer.poolSize = 8192 // not used by this implementation
|
|
|
|
var rootParent = {}
|
|
|
|
/**
|
|
* If `Buffer.TYPED_ARRAY_SUPPORT`:
|
|
* === true Use Uint8Array implementation (fastest)
|
|
* === false Use 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+.
|
|
*
|
|
* Due to various browser bugs, sometimes the Object implementation will be used even
|
|
* when the browser supports typed arrays.
|
|
*
|
|
* Note:
|
|
*
|
|
* - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
|
|
* See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
|
|
*
|
|
* - Safari 5-7 lacks support for changing the `Object.prototype.constructor` property
|
|
* on objects.
|
|
*
|
|
* - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
|
|
*
|
|
* - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
|
|
* incorrect length in some situations.
|
|
|
|
* We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
|
|
* get the Object implementation, which is slower but behaves correctly.
|
|
*/
|
|
Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
|
|
? global.TYPED_ARRAY_SUPPORT
|
|
: typedArraySupport()
|
|
|
|
function typedArraySupport () {
|
|
function Bar () {}
|
|
try {
|
|
var arr = new Uint8Array(1)
|
|
arr.foo = function () { return 42 }
|
|
arr.constructor = Bar
|
|
return arr.foo() === 42 && // typed array instances can be augmented
|
|
arr.constructor === Bar && // constructor can be set
|
|
typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
|
|
arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
|
|
} catch (e) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
function kMaxLength () {
|
|
return Buffer.TYPED_ARRAY_SUPPORT
|
|
? 0x7fffffff
|
|
: 0x3fffffff
|
|
}
|
|
|
|
/**
|
|
* Class: Buffer
|
|
* =============
|
|
*
|
|
* The Buffer constructor returns instances of `Uint8Array` that are augmented
|
|
* with function properties for all the node `Buffer` API functions. We use
|
|
* `Uint8Array` so that square bracket notation works as expected -- it returns
|
|
* a single octet.
|
|
*
|
|
* By augmenting the instances, we can avoid modifying the `Uint8Array`
|
|
* prototype.
|
|
*/
|
|
function Buffer (arg) {
|
|
if (!(this instanceof Buffer)) {
|
|
// Avoid going through an ArgumentsAdaptorTrampoline in the common case.
|
|
if (arguments.length > 1) return new Buffer(arg, arguments[1])
|
|
return new Buffer(arg)
|
|
}
|
|
|
|
this.length = 0
|
|
this.parent = undefined
|
|
|
|
// Common case.
|
|
if (typeof arg === 'number') {
|
|
return fromNumber(this, arg)
|
|
}
|
|
|
|
// Slightly less common case.
|
|
if (typeof arg === 'string') {
|
|
return fromString(this, arg, arguments.length > 1 ? arguments[1] : 'utf8')
|
|
}
|
|
|
|
// Unusual.
|
|
return fromObject(this, arg)
|
|
}
|
|
|
|
function fromNumber (that, length) {
|
|
that = allocate(that, length < 0 ? 0 : checked(length) | 0)
|
|
if (!Buffer.TYPED_ARRAY_SUPPORT) {
|
|
for (var i = 0; i < length; i++) {
|
|
that[i] = 0
|
|
}
|
|
}
|
|
return that
|
|
}
|
|
|
|
function fromString (that, string, encoding) {
|
|
if (typeof encoding !== 'string' || encoding === '') encoding = 'utf8'
|
|
|
|
// Assumption: byteLength() return value is always < kMaxLength.
|
|
var length = byteLength(string, encoding) | 0
|
|
that = allocate(that, length)
|
|
|
|
that.write(string, encoding)
|
|
return that
|
|
}
|
|
|
|
function fromObject (that, object) {
|
|
if (Buffer.isBuffer(object)) return fromBuffer(that, object)
|
|
|
|
if (isArray(object)) return fromArray(that, object)
|
|
|
|
if (object == null) {
|
|
throw new TypeError('must start with number, buffer, array or string')
|
|
}
|
|
|
|
if (typeof ArrayBuffer !== 'undefined') {
|
|
if (object.buffer instanceof ArrayBuffer) {
|
|
return fromTypedArray(that, object)
|
|
}
|
|
if (object instanceof ArrayBuffer) {
|
|
return fromArrayBuffer(that, object)
|
|
}
|
|
}
|
|
|
|
if (object.length) return fromArrayLike(that, object)
|
|
|
|
return fromJsonObject(that, object)
|
|
}
|
|
|
|
function fromBuffer (that, buffer) {
|
|
var length = checked(buffer.length) | 0
|
|
that = allocate(that, length)
|
|
buffer.copy(that, 0, 0, length)
|
|
return that
|
|
}
|
|
|
|
function fromArray (that, array) {
|
|
var length = checked(array.length) | 0
|
|
that = allocate(that, length)
|
|
for (var i = 0; i < length; i += 1) {
|
|
that[i] = array[i] & 255
|
|
}
|
|
return that
|
|
}
|
|
|
|
// Duplicate of fromArray() to keep fromArray() monomorphic.
|
|
function fromTypedArray (that, array) {
|
|
var length = checked(array.length) | 0
|
|
that = allocate(that, length)
|
|
// Truncating the elements is probably not what people expect from typed
|
|
// arrays with BYTES_PER_ELEMENT > 1 but it's compatible with the behavior
|
|
// of the old Buffer constructor.
|
|
for (var i = 0; i < length; i += 1) {
|
|
that[i] = array[i] & 255
|
|
}
|
|
return that
|
|
}
|
|
|
|
function fromArrayBuffer (that, array) {
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
// Return an augmented `Uint8Array` instance, for best performance
|
|
array.byteLength
|
|
that = Buffer._augment(new Uint8Array(array))
|
|
} else {
|
|
// Fallback: Return an object instance of the Buffer class
|
|
that = fromTypedArray(that, new Uint8Array(array))
|
|
}
|
|
return that
|
|
}
|
|
|
|
function fromArrayLike (that, array) {
|
|
var length = checked(array.length) | 0
|
|
that = allocate(that, length)
|
|
for (var i = 0; i < length; i += 1) {
|
|
that[i] = array[i] & 255
|
|
}
|
|
return that
|
|
}
|
|
|
|
// Deserialize { type: 'Buffer', data: [1,2,3,...] } into a Buffer object.
|
|
// Returns a zero-length buffer for inputs that don't conform to the spec.
|
|
function fromJsonObject (that, object) {
|
|
var array
|
|
var length = 0
|
|
|
|
if (object.type === 'Buffer' && isArray(object.data)) {
|
|
array = object.data
|
|
length = checked(array.length) | 0
|
|
}
|
|
that = allocate(that, length)
|
|
|
|
for (var i = 0; i < length; i += 1) {
|
|
that[i] = array[i] & 255
|
|
}
|
|
return that
|
|
}
|
|
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
Buffer.prototype.__proto__ = Uint8Array.prototype
|
|
Buffer.__proto__ = Uint8Array
|
|
}
|
|
|
|
function allocate (that, length) {
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
// Return an augmented `Uint8Array` instance, for best performance
|
|
that = Buffer._augment(new Uint8Array(length))
|
|
that.__proto__ = Buffer.prototype
|
|
} else {
|
|
// Fallback: Return an object instance of the Buffer class
|
|
that.length = length
|
|
that._isBuffer = true
|
|
}
|
|
|
|
var fromPool = length !== 0 && length <= Buffer.poolSize >>> 1
|
|
if (fromPool) that.parent = rootParent
|
|
|
|
return that
|
|
}
|
|
|
|
function checked (length) {
|
|
// Note: cannot use `length < kMaxLength` here because that fails when
|
|
// length is NaN (which is otherwise coerced to zero.)
|
|
if (length >= kMaxLength()) {
|
|
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
|
|
'size: 0x' + kMaxLength().toString(16) + ' bytes')
|
|
}
|
|
return length | 0
|
|
}
|
|
|
|
function SlowBuffer (subject, encoding) {
|
|
if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)
|
|
|
|
var buf = new Buffer(subject, encoding)
|
|
delete buf.parent
|
|
return buf
|
|
}
|
|
|
|
Buffer.isBuffer = function isBuffer (b) {
|
|
return !!(b != null && b._isBuffer)
|
|
}
|
|
|
|
Buffer.compare = function compare (a, b) {
|
|
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
|
|
throw new TypeError('Arguments must be Buffers')
|
|
}
|
|
|
|
if (a === b) return 0
|
|
|
|
var x = a.length
|
|
var y = b.length
|
|
|
|
var i = 0
|
|
var len = Math.min(x, y)
|
|
while (i < len) {
|
|
if (a[i] !== b[i]) break
|
|
|
|
++i
|
|
}
|
|
|
|
if (i !== len) {
|
|
x = a[i]
|
|
y = b[i]
|
|
}
|
|
|
|
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 'binary':
|
|
case 'base64':
|
|
case 'raw':
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
Buffer.concat = function concat (list, length) {
|
|
if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')
|
|
|
|
if (list.length === 0) {
|
|
return new Buffer(0)
|
|
}
|
|
|
|
var i
|
|
if (length === undefined) {
|
|
length = 0
|
|
for (i = 0; i < list.length; i++) {
|
|
length += list[i].length
|
|
}
|
|
}
|
|
|
|
var buf = new Buffer(length)
|
|
var pos = 0
|
|
for (i = 0; i < list.length; i++) {
|
|
var item = list[i]
|
|
item.copy(buf, pos)
|
|
pos += item.length
|
|
}
|
|
return buf
|
|
}
|
|
|
|
function byteLength (string, encoding) {
|
|
if (typeof string !== 'string') string = '' + string
|
|
|
|
var len = string.length
|
|
if (len === 0) return 0
|
|
|
|
// Use a for loop to avoid recursion
|
|
var loweredCase = false
|
|
for (;;) {
|
|
switch (encoding) {
|
|
case 'ascii':
|
|
case 'binary':
|
|
// Deprecated
|
|
case 'raw':
|
|
case 'raws':
|
|
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 utf8ToBytes(string).length // assume utf8
|
|
encoding = ('' + encoding).toLowerCase()
|
|
loweredCase = true
|
|
}
|
|
}
|
|
}
|
|
Buffer.byteLength = byteLength
|
|
|
|
// pre-set for values that may exist in the future
|
|
Buffer.prototype.length = undefined
|
|
Buffer.prototype.parent = undefined
|
|
|
|
function slowToString (encoding, start, end) {
|
|
var loweredCase = false
|
|
|
|
start = start | 0
|
|
end = end === undefined || end === Infinity ? this.length : end | 0
|
|
|
|
if (!encoding) encoding = 'utf8'
|
|
if (start < 0) start = 0
|
|
if (end > this.length) end = this.length
|
|
if (end <= start) return ''
|
|
|
|
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 'binary':
|
|
return binarySlice(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
|
|
}
|
|
}
|
|
}
|
|
|
|
Buffer.prototype.toString = function toString () {
|
|
var length = this.length | 0
|
|
if (length === 0) return ''
|
|
if (arguments.length === 0) return utf8Slice(this, 0, length)
|
|
return slowToString.apply(this, arguments)
|
|
}
|
|
|
|
Buffer.prototype.equals = function equals (b) {
|
|
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
|
|
if (this === b) return true
|
|
return Buffer.compare(this, b) === 0
|
|
}
|
|
|
|
Buffer.prototype.inspect = function inspect () {
|
|
var str = ''
|
|
var max = exports.INSPECT_MAX_BYTES
|
|
if (this.length > 0) {
|
|
str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
|
|
if (this.length > max) str += ' ... '
|
|
}
|
|
return '<Buffer ' + str + '>'
|
|
}
|
|
|
|
Buffer.prototype.compare = function compare (b) {
|
|
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
|
|
if (this === b) return 0
|
|
return Buffer.compare(this, b)
|
|
}
|
|
|
|
Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
|
|
if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
|
|
else if (byteOffset < -0x80000000) byteOffset = -0x80000000
|
|
byteOffset >>= 0
|
|
|
|
if (this.length === 0) return -1
|
|
if (byteOffset >= this.length) return -1
|
|
|
|
// Negative offsets start from the end of the buffer
|
|
if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)
|
|
|
|
if (typeof val === 'string') {
|
|
if (val.length === 0) return -1 // special case: looking for empty string always fails
|
|
return String.prototype.indexOf.call(this, val, byteOffset)
|
|
}
|
|
if (Buffer.isBuffer(val)) {
|
|
return arrayIndexOf(this, val, byteOffset)
|
|
}
|
|
if (typeof val === 'number') {
|
|
if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
|
|
return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
|
|
}
|
|
return arrayIndexOf(this, [ val ], byteOffset)
|
|
}
|
|
|
|
function arrayIndexOf (arr, val, byteOffset) {
|
|
var foundIndex = -1
|
|
for (var i = 0; byteOffset + i < arr.length; i++) {
|
|
if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
|
|
if (foundIndex === -1) foundIndex = i
|
|
if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
|
|
} else {
|
|
foundIndex = -1
|
|
}
|
|
}
|
|
return -1
|
|
}
|
|
|
|
throw new TypeError('val must be string, number or Buffer')
|
|
}
|
|
|
|
// `get` is deprecated
|
|
Buffer.prototype.get = function get (offset) {
|
|
console.log('.get() is deprecated. Access using array indexes instead.')
|
|
return this.readUInt8(offset)
|
|
}
|
|
|
|
// `set` is deprecated
|
|
Buffer.prototype.set = function set (v, offset) {
|
|
console.log('.set() is deprecated. Access using array indexes instead.')
|
|
return this.writeUInt8(v, offset)
|
|
}
|
|
|
|
function hexWrite (buf, string, offset, length) {
|
|
offset = Number(offset) || 0
|
|
var remaining = buf.length - offset
|
|
if (!length) {
|
|
length = remaining
|
|
} else {
|
|
length = Number(length)
|
|
if (length > remaining) {
|
|
length = remaining
|
|
}
|
|
}
|
|
|
|
// must be an even number of digits
|
|
var strLen = string.length
|
|
if (strLen % 2 !== 0) throw new Error('Invalid hex string')
|
|
|
|
if (length > strLen / 2) {
|
|
length = strLen / 2
|
|
}
|
|
for (var i = 0; i < length; i++) {
|
|
var parsed = parseInt(string.substr(i * 2, 2), 16)
|
|
if (isNaN(parsed)) throw new Error('Invalid hex string')
|
|
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 binaryWrite (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
|
|
}
|
|
// legacy write(string, encoding, offset, length) - remove in v0.13
|
|
} else {
|
|
var swap = encoding
|
|
encoding = offset
|
|
offset = length | 0
|
|
length = swap
|
|
}
|
|
|
|
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 'binary':
|
|
return binaryWrite(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 binarySlice (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
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
newBuf = Buffer._augment(this.subarray(start, end))
|
|
} else {
|
|
var sliceLen = end - start
|
|
newBuf = new Buffer(sliceLen, undefined)
|
|
for (var i = 0; i < sliceLen; i++) {
|
|
newBuf[i] = this[i + start]
|
|
}
|
|
}
|
|
|
|
if (newBuf.length) newBuf.parent = this.parent || this
|
|
|
|
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) {
|
|
if (!noAssert) checkOffset(offset, 1, this.length)
|
|
return this[offset]
|
|
}
|
|
|
|
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
return this[offset] | (this[offset + 1] << 8)
|
|
}
|
|
|
|
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
return (this[offset] << 8) | this[offset + 1]
|
|
}
|
|
|
|
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
return ieee754.read(this, offset, true, 23, 4)
|
|
}
|
|
|
|
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
return ieee754.read(this, offset, false, 23, 4)
|
|
}
|
|
|
|
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
|
|
if (!noAssert) checkOffset(offset, 8, this.length)
|
|
return ieee754.read(this, offset, true, 52, 8)
|
|
}
|
|
|
|
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
|
|
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 must be a Buffer instance')
|
|
if (value > max || value < min) throw new RangeError('value 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) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 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) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 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)
|
|
if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
|
|
this[offset] = (value & 0xff)
|
|
return offset + 1
|
|
}
|
|
|
|
function objectWriteUInt16 (buf, value, offset, littleEndian) {
|
|
if (value < 0) value = 0xffff + value + 1
|
|
for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
|
|
buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
|
|
(littleEndian ? i : 1 - i) * 8
|
|
}
|
|
}
|
|
|
|
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset | 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
} else {
|
|
objectWriteUInt16(this, value, offset, true)
|
|
}
|
|
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)
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
this[offset] = (value >>> 8)
|
|
this[offset + 1] = (value & 0xff)
|
|
} else {
|
|
objectWriteUInt16(this, value, offset, false)
|
|
}
|
|
return offset + 2
|
|
}
|
|
|
|
function objectWriteUInt32 (buf, value, offset, littleEndian) {
|
|
if (value < 0) value = 0xffffffff + value + 1
|
|
for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
|
|
buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
|
|
}
|
|
}
|
|
|
|
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset | 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
this[offset + 3] = (value >>> 24)
|
|
this[offset + 2] = (value >>> 16)
|
|
this[offset + 1] = (value >>> 8)
|
|
this[offset] = (value & 0xff)
|
|
} else {
|
|
objectWriteUInt32(this, value, offset, true)
|
|
}
|
|
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)
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
this[offset] = (value >>> 24)
|
|
this[offset + 1] = (value >>> 16)
|
|
this[offset + 2] = (value >>> 8)
|
|
this[offset + 3] = (value & 0xff)
|
|
} else {
|
|
objectWriteUInt32(this, value, offset, false)
|
|
}
|
|
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 = value < 0 ? 1 : 0
|
|
this[offset] = value & 0xFF
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
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 = value < 0 ? 1 : 0
|
|
this[offset + i] = value & 0xFF
|
|
while (--i >= 0 && (mul *= 0x100)) {
|
|
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 (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
|
|
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)
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
} else {
|
|
objectWriteUInt16(this, value, offset, true)
|
|
}
|
|
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)
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
this[offset] = (value >>> 8)
|
|
this[offset + 1] = (value & 0xff)
|
|
} else {
|
|
objectWriteUInt16(this, value, offset, false)
|
|
}
|
|
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)
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
this[offset + 2] = (value >>> 16)
|
|
this[offset + 3] = (value >>> 24)
|
|
} else {
|
|
objectWriteUInt32(this, value, offset, true)
|
|
}
|
|
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
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
this[offset] = (value >>> 24)
|
|
this[offset + 1] = (value >>> 16)
|
|
this[offset + 2] = (value >>> 8)
|
|
this[offset + 3] = (value & 0xff)
|
|
} else {
|
|
objectWriteUInt32(this, value, offset, false)
|
|
}
|
|
return offset + 4
|
|
}
|
|
|
|
function checkIEEE754 (buf, value, offset, ext, max, min) {
|
|
if (value > max || value < min) throw new RangeError('value is out of bounds')
|
|
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) {
|
|
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) {
|
|
if (!noAssert) {
|
|
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
|
|
}
|
|
ieee754.write(buf, value, offset, littleEndian, 52, 8)
|
|
return offset + 8
|
|
}
|
|
|
|
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
|
|
return writeDouble(this, value, offset, true, noAssert)
|
|
}
|
|
|
|
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
|
|
return writeDouble(this, value, offset, false, noAssert)
|
|
}
|
|
|
|
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
|
|
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
|
|
if (!start) start = 0
|
|
if (!end && end !== 0) end = this.length
|
|
if (targetStart >= target.length) targetStart = target.length
|
|
if (!targetStart) targetStart = 0
|
|
if (end > 0 && end < start) end = start
|
|
|
|
// Copy 0 bytes; we're done
|
|
if (end === start) return 0
|
|
if (target.length === 0 || this.length === 0) return 0
|
|
|
|
// Fatal error conditions
|
|
if (targetStart < 0) {
|
|
throw new RangeError('targetStart out of bounds')
|
|
}
|
|
if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
|
|
if (end < 0) throw new RangeError('sourceEnd out of bounds')
|
|
|
|
// Are we oob?
|
|
if (end > this.length) end = this.length
|
|
if (target.length - targetStart < end - start) {
|
|
end = target.length - targetStart + start
|
|
}
|
|
|
|
var len = end - start
|
|
var i
|
|
|
|
if (this === target && start < targetStart && targetStart < end) {
|
|
// descending copy from end
|
|
for (i = len - 1; i >= 0; i--) {
|
|
target[i + targetStart] = this[i + start]
|
|
}
|
|
} else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
|
|
// ascending copy from start
|
|
for (i = 0; i < len; i++) {
|
|
target[i + targetStart] = this[i + start]
|
|
}
|
|
} else {
|
|
target._set(this.subarray(start, start + len), targetStart)
|
|
}
|
|
|
|
return len
|
|
}
|
|
|
|
// fill(value, start=0, end=buffer.length)
|
|
Buffer.prototype.fill = function fill (value, start, end) {
|
|
if (!value) value = 0
|
|
if (!start) start = 0
|
|
if (!end) end = this.length
|
|
|
|
if (end < start) throw new RangeError('end < start')
|
|
|
|
// Fill 0 bytes; we're done
|
|
if (end === start) return
|
|
if (this.length === 0) return
|
|
|
|
if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
|
|
if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
|
|
|
|
var i
|
|
if (typeof value === 'number') {
|
|
for (i = start; i < end; i++) {
|
|
this[i] = value
|
|
}
|
|
} else {
|
|
var bytes = utf8ToBytes(value.toString())
|
|
var len = bytes.length
|
|
for (i = start; i < end; i++) {
|
|
this[i] = bytes[i % len]
|
|
}
|
|
}
|
|
|
|
return this
|
|
}
|
|
|
|
/**
|
|
* Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
|
|
* Added in Node 0.12. Only available in browsers that support ArrayBuffer.
|
|
*/
|
|
Buffer.prototype.toArrayBuffer = function toArrayBuffer () {
|
|
if (typeof Uint8Array !== 'undefined') {
|
|
if (Buffer.TYPED_ARRAY_SUPPORT) {
|
|
return (new Buffer(this)).buffer
|
|
} else {
|
|
var buf = new Uint8Array(this.length)
|
|
for (var i = 0, len = buf.length; i < len; i += 1) {
|
|
buf[i] = this[i]
|
|
}
|
|
return buf.buffer
|
|
}
|
|
} else {
|
|
throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
|
|
}
|
|
}
|
|
|
|
// HELPER FUNCTIONS
|
|
// ================
|
|
|
|
var BP = Buffer.prototype
|
|
|
|
/**
|
|
* Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
|
|
*/
|
|
Buffer._augment = function _augment (arr) {
|
|
arr.constructor = Buffer
|
|
arr._isBuffer = true
|
|
|
|
// save reference to original Uint8Array set method before overwriting
|
|
arr._set = arr.set
|
|
|
|
// deprecated
|
|
arr.get = BP.get
|
|
arr.set = BP.set
|
|
|
|
arr.write = BP.write
|
|
arr.toString = BP.toString
|
|
arr.toLocaleString = BP.toString
|
|
arr.toJSON = BP.toJSON
|
|
arr.equals = BP.equals
|
|
arr.compare = BP.compare
|
|
arr.indexOf = BP.indexOf
|
|
arr.copy = BP.copy
|
|
arr.slice = BP.slice
|
|
arr.readUIntLE = BP.readUIntLE
|
|
arr.readUIntBE = BP.readUIntBE
|
|
arr.readUInt8 = BP.readUInt8
|
|
arr.readUInt16LE = BP.readUInt16LE
|
|
arr.readUInt16BE = BP.readUInt16BE
|
|
arr.readUInt32LE = BP.readUInt32LE
|
|
arr.readUInt32BE = BP.readUInt32BE
|
|
arr.readIntLE = BP.readIntLE
|
|
arr.readIntBE = BP.readIntBE
|
|
arr.readInt8 = BP.readInt8
|
|
arr.readInt16LE = BP.readInt16LE
|
|
arr.readInt16BE = BP.readInt16BE
|
|
arr.readInt32LE = BP.readInt32LE
|
|
arr.readInt32BE = BP.readInt32BE
|
|
arr.readFloatLE = BP.readFloatLE
|
|
arr.readFloatBE = BP.readFloatBE
|
|
arr.readDoubleLE = BP.readDoubleLE
|
|
arr.readDoubleBE = BP.readDoubleBE
|
|
arr.writeUInt8 = BP.writeUInt8
|
|
arr.writeUIntLE = BP.writeUIntLE
|
|
arr.writeUIntBE = BP.writeUIntBE
|
|
arr.writeUInt16LE = BP.writeUInt16LE
|
|
arr.writeUInt16BE = BP.writeUInt16BE
|
|
arr.writeUInt32LE = BP.writeUInt32LE
|
|
arr.writeUInt32BE = BP.writeUInt32BE
|
|
arr.writeIntLE = BP.writeIntLE
|
|
arr.writeIntBE = BP.writeIntBE
|
|
arr.writeInt8 = BP.writeInt8
|
|
arr.writeInt16LE = BP.writeInt16LE
|
|
arr.writeInt16BE = BP.writeInt16BE
|
|
arr.writeInt32LE = BP.writeInt32LE
|
|
arr.writeInt32BE = BP.writeInt32BE
|
|
arr.writeFloatLE = BP.writeFloatLE
|
|
arr.writeFloatBE = BP.writeFloatBE
|
|
arr.writeDoubleLE = BP.writeDoubleLE
|
|
arr.writeDoubleBE = BP.writeDoubleBE
|
|
arr.fill = BP.fill
|
|
arr.inspect = BP.inspect
|
|
arr.toArrayBuffer = BP.toArrayBuffer
|
|
|
|
return arr
|
|
}
|
|
|
|
var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
|
|
|
|
function base64clean (str) {
|
|
// Node strips out invalid characters like \n and \t from the string, base64-js does not
|
|
str = stringtrim(str).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 stringtrim (str) {
|
|
if (str.trim) return str.trim()
|
|
return str.replace(/^\s+|\s+$/g, '')
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
|
},{"base64-js":3,"ieee754":4,"is-array":5}],3:[function(require,module,exports){
|
|
var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
|
|
|
|
;(function (exports) {
|
|
'use strict';
|
|
|
|
var Arr = (typeof Uint8Array !== 'undefined')
|
|
? Uint8Array
|
|
: Array
|
|
|
|
var PLUS = '+'.charCodeAt(0)
|
|
var SLASH = '/'.charCodeAt(0)
|
|
var NUMBER = '0'.charCodeAt(0)
|
|
var LOWER = 'a'.charCodeAt(0)
|
|
var UPPER = 'A'.charCodeAt(0)
|
|
var PLUS_URL_SAFE = '-'.charCodeAt(0)
|
|
var SLASH_URL_SAFE = '_'.charCodeAt(0)
|
|
|
|
function decode (elt) {
|
|
var code = elt.charCodeAt(0)
|
|
if (code === PLUS ||
|
|
code === PLUS_URL_SAFE)
|
|
return 62 // '+'
|
|
if (code === SLASH ||
|
|
code === SLASH_URL_SAFE)
|
|
return 63 // '/'
|
|
if (code < NUMBER)
|
|
return -1 //no match
|
|
if (code < NUMBER + 10)
|
|
return code - NUMBER + 26 + 26
|
|
if (code < UPPER + 26)
|
|
return code - UPPER
|
|
if (code < LOWER + 26)
|
|
return code - LOWER + 26
|
|
}
|
|
|
|
function b64ToByteArray (b64) {
|
|
var i, j, l, tmp, placeHolders, arr
|
|
|
|
if (b64.length % 4 > 0) {
|
|
throw new Error('Invalid string. Length must be a multiple of 4')
|
|
}
|
|
|
|
// the number of equal signs (place holders)
|
|
// if there are two placeholders, than the two characters before it
|
|
// represent one byte
|
|
// if there is only one, then the three characters before it represent 2 bytes
|
|
// this is just a cheap hack to not do indexOf twice
|
|
var len = b64.length
|
|
placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0
|
|
|
|
// base64 is 4/3 + up to two characters of the original data
|
|
arr = new Arr(b64.length * 3 / 4 - placeHolders)
|
|
|
|
// if there are placeholders, only get up to the last complete 4 chars
|
|
l = placeHolders > 0 ? b64.length - 4 : b64.length
|
|
|
|
var L = 0
|
|
|
|
function push (v) {
|
|
arr[L++] = v
|
|
}
|
|
|
|
for (i = 0, j = 0; i < l; i += 4, j += 3) {
|
|
tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
|
|
push((tmp & 0xFF0000) >> 16)
|
|
push((tmp & 0xFF00) >> 8)
|
|
push(tmp & 0xFF)
|
|
}
|
|
|
|
if (placeHolders === 2) {
|
|
tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
|
|
push(tmp & 0xFF)
|
|
} else if (placeHolders === 1) {
|
|
tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
|
|
push((tmp >> 8) & 0xFF)
|
|
push(tmp & 0xFF)
|
|
}
|
|
|
|
return arr
|
|
}
|
|
|
|
function uint8ToBase64 (uint8) {
|
|
var i,
|
|
extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
|
|
output = "",
|
|
temp, length
|
|
|
|
function encode (num) {
|
|
return lookup.charAt(num)
|
|
}
|
|
|
|
function tripletToBase64 (num) {
|
|
return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
|
|
}
|
|
|
|
// go through the array every three bytes, we'll deal with trailing stuff later
|
|
for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
|
|
temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
|
|
output += tripletToBase64(temp)
|
|
}
|
|
|
|
// pad the end with zeros, but make sure to not forget the extra bytes
|
|
switch (extraBytes) {
|
|
case 1:
|
|
temp = uint8[uint8.length - 1]
|
|
output += encode(temp >> 2)
|
|
output += encode((temp << 4) & 0x3F)
|
|
output += '=='
|
|
break
|
|
case 2:
|
|
temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
|
|
output += encode(temp >> 10)
|
|
output += encode((temp >> 4) & 0x3F)
|
|
output += encode((temp << 2) & 0x3F)
|
|
output += '='
|
|
break
|
|
}
|
|
|
|
return output
|
|
}
|
|
|
|
exports.toByteArray = b64ToByteArray
|
|
exports.fromByteArray = uint8ToBase64
|
|
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
|
|
|
|
},{}],4:[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
|
|
}
|
|
|
|
},{}],5:[function(require,module,exports){
|
|
|
|
/**
|
|
* isArray
|
|
*/
|
|
|
|
var isArray = Array.isArray;
|
|
|
|
/**
|
|
* toString
|
|
*/
|
|
|
|
var str = Object.prototype.toString;
|
|
|
|
/**
|
|
* Whether or not the given `val`
|
|
* is an array.
|
|
*
|
|
* example:
|
|
*
|
|
* isArray([]);
|
|
* // > true
|
|
* isArray(arguments);
|
|
* // > false
|
|
* isArray('');
|
|
* // > false
|
|
*
|
|
* @param {mixed} val
|
|
* @return {bool}
|
|
*/
|
|
|
|
module.exports = isArray || function (val) {
|
|
return !! val && '[object Array]' == str.call(val);
|
|
};
|
|
|
|
},{}],6:[function(require,module,exports){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a
|
|
// copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to permit
|
|
// persons to whom the Software is furnished to do so, subject to the
|
|
// following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included
|
|
// in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
|
|
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
|
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
// USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
function EventEmitter() {
|
|
this._events = this._events || {};
|
|
this._maxListeners = this._maxListeners || undefined;
|
|
}
|
|
module.exports = EventEmitter;
|
|
|
|
// Backwards-compat with node 0.10.x
|
|
EventEmitter.EventEmitter = EventEmitter;
|
|
|
|
EventEmitter.prototype._events = undefined;
|
|
EventEmitter.prototype._maxListeners = undefined;
|
|
|
|
// By default EventEmitters will print a warning if more than 10 listeners are
|
|
// added to it. This is a useful default which helps finding memory leaks.
|
|
EventEmitter.defaultMaxListeners = 10;
|
|
|
|
// Obviously not all Emitters should be limited to 10. This function allows
|
|
// that to be increased. Set to zero for unlimited.
|
|
EventEmitter.prototype.setMaxListeners = function(n) {
|
|
if (!isNumber(n) || n < 0 || isNaN(n))
|
|
throw TypeError('n must be a positive number');
|
|
this._maxListeners = n;
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.emit = function(type) {
|
|
var er, handler, len, args, i, listeners;
|
|
|
|
if (!this._events)
|
|
this._events = {};
|
|
|
|
// If there is no 'error' event listener then throw.
|
|
if (type === 'error') {
|
|
if (!this._events.error ||
|
|
(isObject(this._events.error) && !this._events.error.length)) {
|
|
er = arguments[1];
|
|
if (er instanceof Error) {
|
|
throw er; // Unhandled 'error' event
|
|
}
|
|
throw TypeError('Uncaught, unspecified "error" event.');
|
|
}
|
|
}
|
|
|
|
handler = this._events[type];
|
|
|
|
if (isUndefined(handler))
|
|
return false;
|
|
|
|
if (isFunction(handler)) {
|
|
switch (arguments.length) {
|
|
// fast cases
|
|
case 1:
|
|
handler.call(this);
|
|
break;
|
|
case 2:
|
|
handler.call(this, arguments[1]);
|
|
break;
|
|
case 3:
|
|
handler.call(this, arguments[1], arguments[2]);
|
|
break;
|
|
// slower
|
|
default:
|
|
len = arguments.length;
|
|
args = new Array(len - 1);
|
|
for (i = 1; i < len; i++)
|
|
args[i - 1] = arguments[i];
|
|
handler.apply(this, args);
|
|
}
|
|
} else if (isObject(handler)) {
|
|
len = arguments.length;
|
|
args = new Array(len - 1);
|
|
for (i = 1; i < len; i++)
|
|
args[i - 1] = arguments[i];
|
|
|
|
listeners = handler.slice();
|
|
len = listeners.length;
|
|
for (i = 0; i < len; i++)
|
|
listeners[i].apply(this, args);
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
EventEmitter.prototype.addListener = function(type, listener) {
|
|
var m;
|
|
|
|
if (!isFunction(listener))
|
|
throw TypeError('listener must be a function');
|
|
|
|
if (!this._events)
|
|
this._events = {};
|
|
|
|
// To avoid recursion in the case that type === "newListener"! Before
|
|
// adding it to the listeners, first emit "newListener".
|
|
if (this._events.newListener)
|
|
this.emit('newListener', type,
|
|
isFunction(listener.listener) ?
|
|
listener.listener : listener);
|
|
|
|
if (!this._events[type])
|
|
// Optimize the case of one listener. Don't need the extra array object.
|
|
this._events[type] = listener;
|
|
else if (isObject(this._events[type]))
|
|
// If we've already got an array, just append.
|
|
this._events[type].push(listener);
|
|
else
|
|
// Adding the second element, need to change to array.
|
|
this._events[type] = [this._events[type], listener];
|
|
|
|
// Check for listener leak
|
|
if (isObject(this._events[type]) && !this._events[type].warned) {
|
|
var m;
|
|
if (!isUndefined(this._maxListeners)) {
|
|
m = this._maxListeners;
|
|
} else {
|
|
m = EventEmitter.defaultMaxListeners;
|
|
}
|
|
|
|
if (m && m > 0 && this._events[type].length > m) {
|
|
this._events[type].warned = true;
|
|
console.error('(node) warning: possible EventEmitter memory ' +
|
|
'leak detected. %d listeners added. ' +
|
|
'Use emitter.setMaxListeners() to increase limit.',
|
|
this._events[type].length);
|
|
if (typeof console.trace === 'function') {
|
|
// not supported in IE 10
|
|
console.trace();
|
|
}
|
|
}
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
|
|
|
|
EventEmitter.prototype.once = function(type, listener) {
|
|
if (!isFunction(listener))
|
|
throw TypeError('listener must be a function');
|
|
|
|
var fired = false;
|
|
|
|
function g() {
|
|
this.removeListener(type, g);
|
|
|
|
if (!fired) {
|
|
fired = true;
|
|
listener.apply(this, arguments);
|
|
}
|
|
}
|
|
|
|
g.listener = listener;
|
|
this.on(type, g);
|
|
|
|
return this;
|
|
};
|
|
|
|
// emits a 'removeListener' event iff the listener was removed
|
|
EventEmitter.prototype.removeListener = function(type, listener) {
|
|
var list, position, length, i;
|
|
|
|
if (!isFunction(listener))
|
|
throw TypeError('listener must be a function');
|
|
|
|
if (!this._events || !this._events[type])
|
|
return this;
|
|
|
|
list = this._events[type];
|
|
length = list.length;
|
|
position = -1;
|
|
|
|
if (list === listener ||
|
|
(isFunction(list.listener) && list.listener === listener)) {
|
|
delete this._events[type];
|
|
if (this._events.removeListener)
|
|
this.emit('removeListener', type, listener);
|
|
|
|
} else if (isObject(list)) {
|
|
for (i = length; i-- > 0;) {
|
|
if (list[i] === listener ||
|
|
(list[i].listener && list[i].listener === listener)) {
|
|
position = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (position < 0)
|
|
return this;
|
|
|
|
if (list.length === 1) {
|
|
list.length = 0;
|
|
delete this._events[type];
|
|
} else {
|
|
list.splice(position, 1);
|
|
}
|
|
|
|
if (this._events.removeListener)
|
|
this.emit('removeListener', type, listener);
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.removeAllListeners = function(type) {
|
|
var key, listeners;
|
|
|
|
if (!this._events)
|
|
return this;
|
|
|
|
// not listening for removeListener, no need to emit
|
|
if (!this._events.removeListener) {
|
|
if (arguments.length === 0)
|
|
this._events = {};
|
|
else if (this._events[type])
|
|
delete this._events[type];
|
|
return this;
|
|
}
|
|
|
|
// emit removeListener for all listeners on all events
|
|
if (arguments.length === 0) {
|
|
for (key in this._events) {
|
|
if (key === 'removeListener') continue;
|
|
this.removeAllListeners(key);
|
|
}
|
|
this.removeAllListeners('removeListener');
|
|
this._events = {};
|
|
return this;
|
|
}
|
|
|
|
listeners = this._events[type];
|
|
|
|
if (isFunction(listeners)) {
|
|
this.removeListener(type, listeners);
|
|
} else {
|
|
// LIFO order
|
|
while (listeners.length)
|
|
this.removeListener(type, listeners[listeners.length - 1]);
|
|
}
|
|
delete this._events[type];
|
|
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.listeners = function(type) {
|
|
var ret;
|
|
if (!this._events || !this._events[type])
|
|
ret = [];
|
|
else if (isFunction(this._events[type]))
|
|
ret = [this._events[type]];
|
|
else
|
|
ret = this._events[type].slice();
|
|
return ret;
|
|
};
|
|
|
|
EventEmitter.listenerCount = function(emitter, type) {
|
|
var ret;
|
|
if (!emitter._events || !emitter._events[type])
|
|
ret = 0;
|
|
else if (isFunction(emitter._events[type]))
|
|
ret = 1;
|
|
else
|
|
ret = emitter._events[type].length;
|
|
return ret;
|
|
};
|
|
|
|
function isFunction(arg) {
|
|
return typeof arg === 'function';
|
|
}
|
|
|
|
function isNumber(arg) {
|
|
return typeof arg === 'number';
|
|
}
|
|
|
|
function isObject(arg) {
|
|
return typeof arg === 'object' && arg !== null;
|
|
}
|
|
|
|
function isUndefined(arg) {
|
|
return arg === void 0;
|
|
}
|
|
|
|
},{}],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 Buffer
|
|
*
|
|
* Author: Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
|
|
* License: MIT
|
|
*
|
|
* `npm install is-buffer`
|
|
*/
|
|
|
|
module.exports = function (obj) {
|
|
return !!(obj != null &&
|
|
(obj._isBuffer || // For Safari 5-7 (missing Object.prototype.constructor)
|
|
(obj.constructor &&
|
|
typeof obj.constructor.isBuffer === 'function' &&
|
|
obj.constructor.isBuffer(obj))
|
|
))
|
|
}
|
|
|
|
},{}],9:[function(require,module,exports){
|
|
// shim for using process in browser
|
|
|
|
var process = module.exports = {};
|
|
var queue = [];
|
|
var draining = false;
|
|
var currentQueue;
|
|
var queueIndex = -1;
|
|
|
|
function cleanUpNextTick() {
|
|
draining = false;
|
|
if (currentQueue.length) {
|
|
queue = currentQueue.concat(queue);
|
|
} else {
|
|
queueIndex = -1;
|
|
}
|
|
if (queue.length) {
|
|
drainQueue();
|
|
}
|
|
}
|
|
|
|
function drainQueue() {
|
|
if (draining) {
|
|
return;
|
|
}
|
|
var timeout = setTimeout(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;
|
|
clearTimeout(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) {
|
|
setTimeout(drainQueue, 0);
|
|
}
|
|
};
|
|
|
|
// 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.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; };
|
|
|
|
},{}],10:[function(require,module,exports){
|
|
module.exports = function isBuffer(arg) {
|
|
return arg && typeof arg === 'object'
|
|
&& typeof arg.copy === 'function'
|
|
&& typeof arg.fill === 'function'
|
|
&& typeof arg.readUInt8 === 'function';
|
|
}
|
|
},{}],11:[function(require,module,exports){
|
|
(function (process,global){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a
|
|
// copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to permit
|
|
// persons to whom the Software is furnished to do so, subject to the
|
|
// following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included
|
|
// in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
|
|
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
|
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
// USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
var formatRegExp = /%[sdj%]/g;
|
|
exports.format = function(f) {
|
|
if (!isString(f)) {
|
|
var objects = [];
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
objects.push(inspect(arguments[i]));
|
|
}
|
|
return objects.join(' ');
|
|
}
|
|
|
|
var i = 1;
|
|
var args = arguments;
|
|
var len = args.length;
|
|
var str = String(f).replace(formatRegExp, function(x) {
|
|
if (x === '%%') return '%';
|
|
if (i >= len) return x;
|
|
switch (x) {
|
|
case '%s': return String(args[i++]);
|
|
case '%d': return Number(args[i++]);
|
|
case '%j':
|
|
try {
|
|
return JSON.stringify(args[i++]);
|
|
} catch (_) {
|
|
return '[Circular]';
|
|
}
|
|
default:
|
|
return x;
|
|
}
|
|
});
|
|
for (var x = args[i]; i < len; x = args[++i]) {
|
|
if (isNull(x) || !isObject(x)) {
|
|
str += ' ' + x;
|
|
} else {
|
|
str += ' ' + inspect(x);
|
|
}
|
|
}
|
|
return str;
|
|
};
|
|
|
|
|
|
// Mark that a method should not be used.
|
|
// Returns a modified function which warns once by default.
|
|
// If --no-deprecation is set, then it is a no-op.
|
|
exports.deprecate = function(fn, msg) {
|
|
// Allow for deprecating things in the process of starting up.
|
|
if (isUndefined(global.process)) {
|
|
return function() {
|
|
return exports.deprecate(fn, msg).apply(this, arguments);
|
|
};
|
|
}
|
|
|
|
if (process.noDeprecation === true) {
|
|
return fn;
|
|
}
|
|
|
|
var warned = false;
|
|
function deprecated() {
|
|
if (!warned) {
|
|
if (process.throwDeprecation) {
|
|
throw new Error(msg);
|
|
} else if (process.traceDeprecation) {
|
|
console.trace(msg);
|
|
} else {
|
|
console.error(msg);
|
|
}
|
|
warned = true;
|
|
}
|
|
return fn.apply(this, arguments);
|
|
}
|
|
|
|
return deprecated;
|
|
};
|
|
|
|
|
|
var debugs = {};
|
|
var debugEnviron;
|
|
exports.debuglog = function(set) {
|
|
if (isUndefined(debugEnviron))
|
|
debugEnviron = process.env.NODE_DEBUG || '';
|
|
set = set.toUpperCase();
|
|
if (!debugs[set]) {
|
|
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
|
|
var pid = process.pid;
|
|
debugs[set] = function() {
|
|
var msg = exports.format.apply(exports, arguments);
|
|
console.error('%s %d: %s', set, pid, msg);
|
|
};
|
|
} else {
|
|
debugs[set] = function() {};
|
|
}
|
|
}
|
|
return debugs[set];
|
|
};
|
|
|
|
|
|
/**
|
|
* Echos the value of a value. Trys to print the value out
|
|
* in the best way possible given the different types.
|
|
*
|
|
* @param {Object} obj The object to print out.
|
|
* @param {Object} opts Optional options object that alters the output.
|
|
*/
|
|
/* legacy: obj, showHidden, depth, colors*/
|
|
function inspect(obj, opts) {
|
|
// default options
|
|
var ctx = {
|
|
seen: [],
|
|
stylize: stylizeNoColor
|
|
};
|
|
// legacy...
|
|
if (arguments.length >= 3) ctx.depth = arguments[2];
|
|
if (arguments.length >= 4) ctx.colors = arguments[3];
|
|
if (isBoolean(opts)) {
|
|
// legacy...
|
|
ctx.showHidden = opts;
|
|
} else if (opts) {
|
|
// got an "options" object
|
|
exports._extend(ctx, opts);
|
|
}
|
|
// set default options
|
|
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
|
|
if (isUndefined(ctx.depth)) ctx.depth = 2;
|
|
if (isUndefined(ctx.colors)) ctx.colors = false;
|
|
if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
|
|
if (ctx.colors) ctx.stylize = stylizeWithColor;
|
|
return formatValue(ctx, obj, ctx.depth);
|
|
}
|
|
exports.inspect = inspect;
|
|
|
|
|
|
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
|
|
inspect.colors = {
|
|
'bold' : [1, 22],
|
|
'italic' : [3, 23],
|
|
'underline' : [4, 24],
|
|
'inverse' : [7, 27],
|
|
'white' : [37, 39],
|
|
'grey' : [90, 39],
|
|
'black' : [30, 39],
|
|
'blue' : [34, 39],
|
|
'cyan' : [36, 39],
|
|
'green' : [32, 39],
|
|
'magenta' : [35, 39],
|
|
'red' : [31, 39],
|
|
'yellow' : [33, 39]
|
|
};
|
|
|
|
// Don't use 'blue' not visible on cmd.exe
|
|
inspect.styles = {
|
|
'special': 'cyan',
|
|
'number': 'yellow',
|
|
'boolean': 'yellow',
|
|
'undefined': 'grey',
|
|
'null': 'bold',
|
|
'string': 'green',
|
|
'date': 'magenta',
|
|
// "name": intentionally not styling
|
|
'regexp': 'red'
|
|
};
|
|
|
|
|
|
function stylizeWithColor(str, styleType) {
|
|
var style = inspect.styles[styleType];
|
|
|
|
if (style) {
|
|
return '\u001b[' + inspect.colors[style][0] + 'm' + str +
|
|
'\u001b[' + inspect.colors[style][1] + 'm';
|
|
} else {
|
|
return str;
|
|
}
|
|
}
|
|
|
|
|
|
function stylizeNoColor(str, styleType) {
|
|
return str;
|
|
}
|
|
|
|
|
|
function arrayToHash(array) {
|
|
var hash = {};
|
|
|
|
array.forEach(function(val, idx) {
|
|
hash[val] = true;
|
|
});
|
|
|
|
return hash;
|
|
}
|
|
|
|
|
|
function formatValue(ctx, value, recurseTimes) {
|
|
// Provide a hook for user-specified inspect functions.
|
|
// Check that value is an object with an inspect function on it
|
|
if (ctx.customInspect &&
|
|
value &&
|
|
isFunction(value.inspect) &&
|
|
// Filter out the util module, it's inspect function is special
|
|
value.inspect !== exports.inspect &&
|
|
// Also filter out any prototype objects using the circular check.
|
|
!(value.constructor && value.constructor.prototype === value)) {
|
|
var ret = value.inspect(recurseTimes, ctx);
|
|
if (!isString(ret)) {
|
|
ret = formatValue(ctx, ret, recurseTimes);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
// Primitive types cannot have properties
|
|
var primitive = formatPrimitive(ctx, value);
|
|
if (primitive) {
|
|
return primitive;
|
|
}
|
|
|
|
// Look up the keys of the object.
|
|
var keys = Object.keys(value);
|
|
var visibleKeys = arrayToHash(keys);
|
|
|
|
if (ctx.showHidden) {
|
|
keys = Object.getOwnPropertyNames(value);
|
|
}
|
|
|
|
// IE doesn't make error fields non-enumerable
|
|
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
|
|
if (isError(value)
|
|
&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
|
|
return formatError(value);
|
|
}
|
|
|
|
// Some type of object without properties can be shortcutted.
|
|
if (keys.length === 0) {
|
|
if (isFunction(value)) {
|
|
var name = value.name ? ': ' + value.name : '';
|
|
return ctx.stylize('[Function' + name + ']', 'special');
|
|
}
|
|
if (isRegExp(value)) {
|
|
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
|
|
}
|
|
if (isDate(value)) {
|
|
return ctx.stylize(Date.prototype.toString.call(value), 'date');
|
|
}
|
|
if (isError(value)) {
|
|
return formatError(value);
|
|
}
|
|
}
|
|
|
|
var base = '', array = false, braces = ['{', '}'];
|
|
|
|
// Make Array say that they are Array
|
|
if (isArray(value)) {
|
|
array = true;
|
|
braces = ['[', ']'];
|
|
}
|
|
|
|
// Make functions say that they are functions
|
|
if (isFunction(value)) {
|
|
var n = value.name ? ': ' + value.name : '';
|
|
base = ' [Function' + n + ']';
|
|
}
|
|
|
|
// Make RegExps say that they are RegExps
|
|
if (isRegExp(value)) {
|
|
base = ' ' + RegExp.prototype.toString.call(value);
|
|
}
|
|
|
|
// Make dates with properties first say the date
|
|
if (isDate(value)) {
|
|
base = ' ' + Date.prototype.toUTCString.call(value);
|
|
}
|
|
|
|
// Make error with message first say the error
|
|
if (isError(value)) {
|
|
base = ' ' + formatError(value);
|
|
}
|
|
|
|
if (keys.length === 0 && (!array || value.length == 0)) {
|
|
return braces[0] + base + braces[1];
|
|
}
|
|
|
|
if (recurseTimes < 0) {
|
|
if (isRegExp(value)) {
|
|
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
|
|
} else {
|
|
return ctx.stylize('[Object]', 'special');
|
|
}
|
|
}
|
|
|
|
ctx.seen.push(value);
|
|
|
|
var output;
|
|
if (array) {
|
|
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
|
|
} else {
|
|
output = keys.map(function(key) {
|
|
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
|
|
});
|
|
}
|
|
|
|
ctx.seen.pop();
|
|
|
|
return reduceToSingleString(output, base, braces);
|
|
}
|
|
|
|
|
|
function formatPrimitive(ctx, value) {
|
|
if (isUndefined(value))
|
|
return ctx.stylize('undefined', 'undefined');
|
|
if (isString(value)) {
|
|
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
|
|
.replace(/'/g, "\\'")
|
|
.replace(/\\"/g, '"') + '\'';
|
|
return ctx.stylize(simple, 'string');
|
|
}
|
|
if (isNumber(value))
|
|
return ctx.stylize('' + value, 'number');
|
|
if (isBoolean(value))
|
|
return ctx.stylize('' + value, 'boolean');
|
|
// For some reason typeof null is "object", so special case here.
|
|
if (isNull(value))
|
|
return ctx.stylize('null', 'null');
|
|
}
|
|
|
|
|
|
function formatError(value) {
|
|
return '[' + Error.prototype.toString.call(value) + ']';
|
|
}
|
|
|
|
|
|
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
|
|
var output = [];
|
|
for (var i = 0, l = value.length; i < l; ++i) {
|
|
if (hasOwnProperty(value, String(i))) {
|
|
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
|
|
String(i), true));
|
|
} else {
|
|
output.push('');
|
|
}
|
|
}
|
|
keys.forEach(function(key) {
|
|
if (!key.match(/^\d+$/)) {
|
|
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
|
|
key, true));
|
|
}
|
|
});
|
|
return output;
|
|
}
|
|
|
|
|
|
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
|
|
var name, str, desc;
|
|
desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
|
|
if (desc.get) {
|
|
if (desc.set) {
|
|
str = ctx.stylize('[Getter/Setter]', 'special');
|
|
} else {
|
|
str = ctx.stylize('[Getter]', 'special');
|
|
}
|
|
} else {
|
|
if (desc.set) {
|
|
str = ctx.stylize('[Setter]', 'special');
|
|
}
|
|
}
|
|
if (!hasOwnProperty(visibleKeys, key)) {
|
|
name = '[' + key + ']';
|
|
}
|
|
if (!str) {
|
|
if (ctx.seen.indexOf(desc.value) < 0) {
|
|
if (isNull(recurseTimes)) {
|
|
str = formatValue(ctx, desc.value, null);
|
|
} else {
|
|
str = formatValue(ctx, desc.value, recurseTimes - 1);
|
|
}
|
|
if (str.indexOf('\n') > -1) {
|
|
if (array) {
|
|
str = str.split('\n').map(function(line) {
|
|
return ' ' + line;
|
|
}).join('\n').substr(2);
|
|
} else {
|
|
str = '\n' + str.split('\n').map(function(line) {
|
|
return ' ' + line;
|
|
}).join('\n');
|
|
}
|
|
}
|
|
} else {
|
|
str = ctx.stylize('[Circular]', 'special');
|
|
}
|
|
}
|
|
if (isUndefined(name)) {
|
|
if (array && key.match(/^\d+$/)) {
|
|
return str;
|
|
}
|
|
name = JSON.stringify('' + key);
|
|
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
|
|
name = name.substr(1, name.length - 2);
|
|
name = ctx.stylize(name, 'name');
|
|
} else {
|
|
name = name.replace(/'/g, "\\'")
|
|
.replace(/\\"/g, '"')
|
|
.replace(/(^"|"$)/g, "'");
|
|
name = ctx.stylize(name, 'string');
|
|
}
|
|
}
|
|
|
|
return name + ': ' + str;
|
|
}
|
|
|
|
|
|
function reduceToSingleString(output, base, braces) {
|
|
var numLinesEst = 0;
|
|
var length = output.reduce(function(prev, cur) {
|
|
numLinesEst++;
|
|
if (cur.indexOf('\n') >= 0) numLinesEst++;
|
|
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
|
|
}, 0);
|
|
|
|
if (length > 60) {
|
|
return braces[0] +
|
|
(base === '' ? '' : base + '\n ') +
|
|
' ' +
|
|
output.join(',\n ') +
|
|
' ' +
|
|
braces[1];
|
|
}
|
|
|
|
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
|
|
}
|
|
|
|
|
|
// NOTE: These type checking functions intentionally don't use `instanceof`
|
|
// because it is fragile and can be easily faked with `Object.create()`.
|
|
function isArray(ar) {
|
|
return Array.isArray(ar);
|
|
}
|
|
exports.isArray = isArray;
|
|
|
|
function isBoolean(arg) {
|
|
return typeof arg === 'boolean';
|
|
}
|
|
exports.isBoolean = isBoolean;
|
|
|
|
function isNull(arg) {
|
|
return arg === null;
|
|
}
|
|
exports.isNull = isNull;
|
|
|
|
function isNullOrUndefined(arg) {
|
|
return arg == null;
|
|
}
|
|
exports.isNullOrUndefined = isNullOrUndefined;
|
|
|
|
function isNumber(arg) {
|
|
return typeof arg === 'number';
|
|
}
|
|
exports.isNumber = isNumber;
|
|
|
|
function isString(arg) {
|
|
return typeof arg === 'string';
|
|
}
|
|
exports.isString = isString;
|
|
|
|
function isSymbol(arg) {
|
|
return typeof arg === 'symbol';
|
|
}
|
|
exports.isSymbol = isSymbol;
|
|
|
|
function isUndefined(arg) {
|
|
return arg === void 0;
|
|
}
|
|
exports.isUndefined = isUndefined;
|
|
|
|
function isRegExp(re) {
|
|
return isObject(re) && objectToString(re) === '[object RegExp]';
|
|
}
|
|
exports.isRegExp = isRegExp;
|
|
|
|
function isObject(arg) {
|
|
return typeof arg === 'object' && arg !== null;
|
|
}
|
|
exports.isObject = isObject;
|
|
|
|
function isDate(d) {
|
|
return isObject(d) && objectToString(d) === '[object Date]';
|
|
}
|
|
exports.isDate = isDate;
|
|
|
|
function isError(e) {
|
|
return isObject(e) &&
|
|
(objectToString(e) === '[object Error]' || e instanceof Error);
|
|
}
|
|
exports.isError = isError;
|
|
|
|
function isFunction(arg) {
|
|
return typeof arg === 'function';
|
|
}
|
|
exports.isFunction = isFunction;
|
|
|
|
function isPrimitive(arg) {
|
|
return arg === null ||
|
|
typeof arg === 'boolean' ||
|
|
typeof arg === 'number' ||
|
|
typeof arg === 'string' ||
|
|
typeof arg === 'symbol' || // ES6 symbol
|
|
typeof arg === 'undefined';
|
|
}
|
|
exports.isPrimitive = isPrimitive;
|
|
|
|
exports.isBuffer = require('./support/isBuffer');
|
|
|
|
function objectToString(o) {
|
|
return Object.prototype.toString.call(o);
|
|
}
|
|
|
|
|
|
function pad(n) {
|
|
return n < 10 ? '0' + n.toString(10) : n.toString(10);
|
|
}
|
|
|
|
|
|
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
|
|
'Oct', 'Nov', 'Dec'];
|
|
|
|
// 26 Feb 16:19:34
|
|
function timestamp() {
|
|
var d = new Date();
|
|
var time = [pad(d.getHours()),
|
|
pad(d.getMinutes()),
|
|
pad(d.getSeconds())].join(':');
|
|
return [d.getDate(), months[d.getMonth()], time].join(' ');
|
|
}
|
|
|
|
|
|
// log is just a thin wrapper to console.log that prepends a timestamp
|
|
exports.log = function() {
|
|
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
|
|
};
|
|
|
|
|
|
/**
|
|
* Inherit the prototype methods from one constructor into another.
|
|
*
|
|
* The Function.prototype.inherits from lang.js rewritten as a standalone
|
|
* function (not on Function.prototype). NOTE: If this file is to be loaded
|
|
* during bootstrapping this function needs to be rewritten using some native
|
|
* functions as prototype setup using normal JavaScript does not work as
|
|
* expected during bootstrapping (see mirror.js in r114903).
|
|
*
|
|
* @param {function} ctor Constructor function which needs to inherit the
|
|
* prototype.
|
|
* @param {function} superCtor Constructor function to inherit prototype from.
|
|
*/
|
|
exports.inherits = require('inherits');
|
|
|
|
exports._extend = function(origin, add) {
|
|
// Don't do anything if add isn't an object
|
|
if (!add || !isObject(add)) return origin;
|
|
|
|
var keys = Object.keys(add);
|
|
var i = keys.length;
|
|
while (i--) {
|
|
origin[keys[i]] = add[keys[i]];
|
|
}
|
|
return origin;
|
|
};
|
|
|
|
function hasOwnProperty(obj, prop) {
|
|
return Object.prototype.hasOwnProperty.call(obj, prop);
|
|
}
|
|
|
|
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
|
},{"./support/isBuffer":10,"_process":9,"inherits":7}],12:[function(require,module,exports){
|
|
// a duplex stream is just a stream that is both readable and writable.
|
|
// Since JS doesn't have multiple prototypal inheritance, this class
|
|
// prototypally inherits from Readable, and then parasitically from
|
|
// Writable.
|
|
|
|
'use strict';
|
|
|
|
/*<replacement>*/
|
|
var objectKeys = Object.keys || function (obj) {
|
|
var keys = [];
|
|
for (var key in obj) keys.push(key);
|
|
return keys;
|
|
}
|
|
/*</replacement>*/
|
|
|
|
|
|
module.exports = Duplex;
|
|
|
|
/*<replacement>*/
|
|
var processNextTick = require('process-nextick-args');
|
|
/*</replacement>*/
|
|
|
|
|
|
|
|
/*<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);
|
|
|
|
var keys = objectKeys(Writable.prototype);
|
|
for (var v = 0; v < keys.length; v++) {
|
|
var method = keys[v];
|
|
if (!Duplex.prototype[method])
|
|
Duplex.prototype[method] = Writable.prototype[method];
|
|
}
|
|
|
|
function Duplex(options) {
|
|
if (!(this instanceof Duplex))
|
|
return new Duplex(options);
|
|
|
|
Readable.call(this, options);
|
|
Writable.call(this, options);
|
|
|
|
if (options && options.readable === false)
|
|
this.readable = false;
|
|
|
|
if (options && options.writable === false)
|
|
this.writable = false;
|
|
|
|
this.allowHalfOpen = true;
|
|
if (options && options.allowHalfOpen === false)
|
|
this.allowHalfOpen = false;
|
|
|
|
this.once('end', onend);
|
|
}
|
|
|
|
// the no-half-open enforcer
|
|
function onend() {
|
|
// if we allow half-open state, or if the writable side ended,
|
|
// then we're ok.
|
|
if (this.allowHalfOpen || this._writableState.ended)
|
|
return;
|
|
|
|
// no more data can be written.
|
|
// But allow more writes to happen in this tick.
|
|
processNextTick(onEndNT, this);
|
|
}
|
|
|
|
function onEndNT(self) {
|
|
self.end();
|
|
}
|
|
|
|
function forEach (xs, f) {
|
|
for (var i = 0, l = xs.length; i < l; i++) {
|
|
f(xs[i], i);
|
|
}
|
|
}
|
|
|
|
},{"./_stream_readable":14,"./_stream_writable":16,"core-util-is":17,"inherits":18,"process-nextick-args":20}],13:[function(require,module,exports){
|
|
// 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":15,"core-util-is":17,"inherits":18}],14:[function(require,module,exports){
|
|
(function (process){
|
|
'use strict';
|
|
|
|
module.exports = Readable;
|
|
|
|
/*<replacement>*/
|
|
var processNextTick = require('process-nextick-args');
|
|
/*</replacement>*/
|
|
|
|
|
|
/*<replacement>*/
|
|
var isArray = require('isarray');
|
|
/*</replacement>*/
|
|
|
|
|
|
/*<replacement>*/
|
|
var Buffer = require('buffer').Buffer;
|
|
/*</replacement>*/
|
|
|
|
Readable.ReadableState = ReadableState;
|
|
|
|
var EE = require('events').EventEmitter;
|
|
|
|
/*<replacement>*/
|
|
if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
|
|
return emitter.listeners(type).length;
|
|
};
|
|
/*</replacement>*/
|
|
|
|
|
|
|
|
/*<replacement>*/
|
|
var Stream;
|
|
(function (){try{
|
|
Stream = require('st' + 'ream');
|
|
}catch(_){Stream = require('events').EventEmitter;}}())
|
|
/*</replacement>*/
|
|
|
|
var Buffer = require('buffer').Buffer;
|
|
|
|
/*<replacement>*/
|
|
var util = require('core-util-is');
|
|
util.inherits = require('inherits');
|
|
/*</replacement>*/
|
|
|
|
|
|
|
|
/*<replacement>*/
|
|
var debug = require('util');
|
|
if (debug && debug.debuglog) {
|
|
debug = debug.debuglog('stream');
|
|
} else {
|
|
debug = function () {};
|
|
}
|
|
/*</replacement>*/
|
|
|
|
var StringDecoder;
|
|
|
|
util.inherits(Readable, Stream);
|
|
|
|
function ReadableState(options, stream) {
|
|
var Duplex = require('./_stream_duplex');
|
|
|
|
options = options || {};
|
|
|
|
// object stream flag. Used to make read(n) ignore n and to
|
|
// make all the buffer merging and length checks go away
|
|
this.objectMode = !!options.objectMode;
|
|
|
|
if (stream instanceof Duplex)
|
|
this.objectMode = this.objectMode || !!options.readableObjectMode;
|
|
|
|
// the point at which it stops calling _read() to fill the buffer
|
|
// Note: 0 is a valid value, means "don't call _read preemptively ever"
|
|
var hwm = options.highWaterMark;
|
|
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
|
|
this.highWaterMark = (hwm || hwm === 0) ? hwm : defaultHwm;
|
|
|
|
// cast to ints.
|
|
this.highWaterMark = ~~this.highWaterMark;
|
|
|
|
this.buffer = [];
|
|
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 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;
|
|
|
|
// 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;
|
|
|
|
// 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';
|
|
|
|
// when piping, we only care about 'readable' events that happen
|
|
// after read()ing all the bytes and not getting any pushback.
|
|
this.ranOut = false;
|
|
|
|
// 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) {
|
|
var Duplex = require('./_stream_duplex');
|
|
|
|
if (!(this instanceof Readable))
|
|
return new Readable(options);
|
|
|
|
this._readableState = new ReadableState(options, this);
|
|
|
|
// legacy
|
|
this.readable = true;
|
|
|
|
if (options && typeof options.read === 'function')
|
|
this._read = options.read;
|
|
|
|
Stream.call(this);
|
|
}
|
|
|
|
// 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;
|
|
|
|
if (!state.objectMode && typeof chunk === 'string') {
|
|
encoding = encoding || state.defaultEncoding;
|
|
if (encoding !== state.encoding) {
|
|
chunk = new Buffer(chunk, encoding);
|
|
encoding = '';
|
|
}
|
|
}
|
|
|
|
return readableAddChunk(this, state, chunk, encoding, false);
|
|
};
|
|
|
|
// Unshift should *always* be something directly out of read()
|
|
Readable.prototype.unshift = function(chunk) {
|
|
var state = this._readableState;
|
|
return readableAddChunk(this, state, chunk, '', true);
|
|
};
|
|
|
|
Readable.prototype.isPaused = function() {
|
|
return this._readableState.flowing === false;
|
|
};
|
|
|
|
function readableAddChunk(stream, state, chunk, encoding, addToFront) {
|
|
var er = chunkInvalid(state, chunk);
|
|
if (er) {
|
|
stream.emit('error', er);
|
|
} else if (chunk === null) {
|
|
state.reading = false;
|
|
onEofChunk(stream, state);
|
|
} else if (state.objectMode || chunk && chunk.length > 0) {
|
|
if (state.ended && !addToFront) {
|
|
var e = new Error('stream.push() after EOF');
|
|
stream.emit('error', e);
|
|
} else if (state.endEmitted && addToFront) {
|
|
var e = new Error('stream.unshift() after end event');
|
|
stream.emit('error', e);
|
|
} else {
|
|
if (state.decoder && !addToFront && !encoding)
|
|
chunk = state.decoder.write(chunk);
|
|
|
|
if (!addToFront)
|
|
state.reading = false;
|
|
|
|
// if we want the data now, just emit it.
|
|
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);
|
|
}
|
|
} else if (!addToFront) {
|
|
state.reading = false;
|
|
}
|
|
|
|
return needMoreData(state);
|
|
}
|
|
|
|
|
|
|
|
// 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);
|
|
}
|
|
|
|
// 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 > 128MB
|
|
var MAX_HWM = 0x800000;
|
|
function roundUpToNextPowerOf2(n) {
|
|
if (n >= MAX_HWM) {
|
|
n = MAX_HWM;
|
|
} else {
|
|
// Get the next highest power of 2
|
|
n--;
|
|
for (var p = 1; p < 32; p <<= 1) n |= n >> p;
|
|
n++;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
function howMuchToRead(n, state) {
|
|
if (state.length === 0 && state.ended)
|
|
return 0;
|
|
|
|
if (state.objectMode)
|
|
return n === 0 ? 0 : 1;
|
|
|
|
if (n === null || isNaN(n)) {
|
|
// only flow one buffer at a time
|
|
if (state.flowing && state.buffer.length)
|
|
return state.buffer[0].length;
|
|
else
|
|
return state.length;
|
|
}
|
|
|
|
if (n <= 0)
|
|
return 0;
|
|
|
|
// If we're asking for more than the target buffer level,
|
|
// then raise the water mark. Bump up to the next highest
|
|
// power of 2, to prevent increasing it excessively in tiny
|
|
// amounts.
|
|
if (n > state.highWaterMark)
|
|
state.highWaterMark = roundUpToNextPowerOf2(n);
|
|
|
|
// don't have that much. return null, unless we've ended.
|
|
if (n > state.length) {
|
|
if (!state.ended) {
|
|
state.needReadable = true;
|
|
return 0;
|
|
} else {
|
|
return state.length;
|
|
}
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
// you can override either this method, or the async _read(n) below.
|
|
Readable.prototype.read = function(n) {
|
|
debug('read', n);
|
|
var state = this._readableState;
|
|
var nOrig = n;
|
|
|
|
if (typeof n !== 'number' || 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);
|
|
}
|
|
|
|
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 (doRead && !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;
|
|
}
|
|
|
|
state.length -= n;
|
|
|
|
// If we have nothing in the buffer, then we want to know
|
|
// as soon as we *do* get something into the buffer.
|
|
if (state.length === 0 && !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 && state.length === 0)
|
|
endReadable(this);
|
|
|
|
if (ret !== null)
|
|
this.emit('data', ret);
|
|
|
|
return ret;
|
|
};
|
|
|
|
function chunkInvalid(state, chunk) {
|
|
var er = null;
|
|
if (!(Buffer.isBuffer(chunk)) &&
|
|
typeof chunk !== 'string' &&
|
|
chunk !== null &&
|
|
chunk !== undefined &&
|
|
!state.objectMode) {
|
|
er = new TypeError('Invalid non-string/buffer chunk');
|
|
}
|
|
return er;
|
|
}
|
|
|
|
|
|
function onEofChunk(stream, state) {
|
|
if (state.ended) return;
|
|
if (state.decoder) {
|
|
var chunk = state.decoder.end();
|
|
if (chunk && chunk.length) {
|
|
state.buffer.push(chunk);
|
|
state.length += state.objectMode ? 1 : chunk.length;
|
|
}
|
|
}
|
|
state.ended = true;
|
|
|
|
// emit 'readable' now to make sure it gets picked up.
|
|
emitReadable(stream);
|
|
}
|
|
|
|
// Don't emit readable right away in sync mode, because this can trigger
|
|
// another read() call => stack overflow. This way, it might trigger
|
|
// a nextTick recursion warning, but that's not so bad.
|
|
function emitReadable(stream) {
|
|
var state = stream._readableState;
|
|
state.needReadable = false;
|
|
if (!state.emittedReadable) {
|
|
debug('emitReadable', state.flowing);
|
|
state.emittedReadable = true;
|
|
if (state.sync)
|
|
processNextTick(emitReadable_, stream);
|
|
else
|
|
emitReadable_(stream);
|
|
}
|
|
}
|
|
|
|
function emitReadable_(stream) {
|
|
debug('emit readable');
|
|
stream.emit('readable');
|
|
flow(stream);
|
|
}
|
|
|
|
|
|
// at this point, the user has presumably seen the 'readable' event,
|
|
// and called read() to consume some data. that may have triggered
|
|
// in turn another _read(n) call, in which case reading = true if
|
|
// it's in progress.
|
|
// However, if we're not ended, or reading, and the length < hwm,
|
|
// then go ahead and try to read some more preemptively.
|
|
function maybeReadMore(stream, state) {
|
|
if (!state.readingMore) {
|
|
state.readingMore = true;
|
|
processNextTick(maybeReadMore_, stream, state);
|
|
}
|
|
}
|
|
|
|
function maybeReadMore_(stream, state) {
|
|
var len = state.length;
|
|
while (!state.reading && !state.flowing && !state.ended &&
|
|
state.length < state.highWaterMark) {
|
|
debug('maybeReadMore read 0');
|
|
stream.read(0);
|
|
if (len === state.length)
|
|
// didn't get any data, stop spinning.
|
|
break;
|
|
else
|
|
len = state.length;
|
|
}
|
|
state.readingMore = false;
|
|
}
|
|
|
|
// abstract method. to be overridden in specific implementation classes.
|
|
// call cb(er, data) where data is <= n in length.
|
|
// for virtual (non-string, non-buffer) streams, "length" is somewhat
|
|
// arbitrary, and perhaps not very meaningful.
|
|
Readable.prototype._read = function(n) {
|
|
this.emit('error', new Error('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 : cleanup;
|
|
if (state.endEmitted)
|
|
processNextTick(endFn);
|
|
else
|
|
src.once('end', endFn);
|
|
|
|
dest.on('unpipe', onunpipe);
|
|
function onunpipe(readable) {
|
|
debug('onunpipe');
|
|
if (readable === src) {
|
|
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);
|
|
|
|
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', cleanup);
|
|
src.removeListener('data', ondata);
|
|
|
|
// if the reader is waiting for a drain event from this
|
|
// specific writer, then it would cause it to never start
|
|
// flowing again.
|
|
// So, if this is awaiting a drain, then we just call it now.
|
|
// If we don't know, then assume that we are waiting for one.
|
|
if (state.awaitDrain &&
|
|
(!dest._writableState || dest._writableState.needDrain))
|
|
ondrain();
|
|
}
|
|
|
|
src.on('data', ondata);
|
|
function ondata(chunk) {
|
|
debug('ondata');
|
|
var ret = dest.write(chunk);
|
|
if (false === ret) {
|
|
debug('false write response, pause',
|
|
src._readableState.awaitDrain);
|
|
src._readableState.awaitDrain++;
|
|
src.pause();
|
|
}
|
|
}
|
|
|
|
// if the dest has an error, then stop piping into it.
|
|
// however, don't suppress the throwing behavior for this.
|
|
function onerror(er) {
|
|
debug('onerror', er);
|
|
unpipe();
|
|
dest.removeListener('error', onerror);
|
|
if (EE.listenerCount(dest, 'error') === 0)
|
|
dest.emit('error', er);
|
|
}
|
|
// This is a brutally ugly hack to make sure that our error handler
|
|
// is attached before any userland ones. NEVER DO THIS.
|
|
if (!dest._events || !dest._events.error)
|
|
dest.on('error', onerror);
|
|
else if (isArray(dest._events.error))
|
|
dest._events.error.unshift(onerror);
|
|
else
|
|
dest._events.error = [onerror, dest._events.error];
|
|
|
|
|
|
|
|
// 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 && EE.listenerCount(src, 'data')) {
|
|
state.flowing = true;
|
|
flow(src);
|
|
}
|
|
};
|
|
}
|
|
|
|
|
|
Readable.prototype.unpipe = function(dest) {
|
|
var state = this._readableState;
|
|
|
|
// 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);
|
|
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);
|
|
return this;
|
|
}
|
|
|
|
// try to find the right one.
|
|
var i = indexOf(state.pipes, dest);
|
|
if (i === -1)
|
|
return this;
|
|
|
|
state.pipes.splice(i, 1);
|
|
state.pipesCount -= 1;
|
|
if (state.pipesCount === 1)
|
|
state.pipes = state.pipes[0];
|
|
|
|
dest.emit('unpipe', this);
|
|
|
|
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 listening to data, and it has not explicitly been paused,
|
|
// then call resume to start the flow of data on the next tick.
|
|
if (ev === 'data' && false !== this._readableState.flowing) {
|
|
this.resume();
|
|
}
|
|
|
|
if (ev === 'readable' && this.readable) {
|
|
var state = this._readableState;
|
|
if (!state.readableListening) {
|
|
state.readableListening = true;
|
|
state.emittedReadable = false;
|
|
state.needReadable = true;
|
|
if (!state.reading) {
|
|
processNextTick(nReadingNextTick, this);
|
|
} else if (state.length) {
|
|
emitReadable(this, state);
|
|
}
|
|
}
|
|
}
|
|
|
|
return res;
|
|
};
|
|
Readable.prototype.addListener = Readable.prototype.on;
|
|
|
|
function nReadingNextTick(self) {
|
|
debug('readable nexttick read 0');
|
|
self.read(0);
|
|
}
|
|
|
|
// pause() and resume() are remnants of the legacy readable stream API
|
|
// If the user uses them, then switch into old mode.
|
|
Readable.prototype.resume = function() {
|
|
var state = this._readableState;
|
|
if (!state.flowing) {
|
|
debug('resume');
|
|
state.flowing = true;
|
|
resume(this, state);
|
|
}
|
|
return this;
|
|
};
|
|
|
|
function resume(stream, state) {
|
|
if (!state.resumeScheduled) {
|
|
state.resumeScheduled = true;
|
|
processNextTick(resume_, stream, state);
|
|
}
|
|
}
|
|
|
|
function resume_(stream, state) {
|
|
if (!state.reading) {
|
|
debug('resume read 0');
|
|
stream.read(0);
|
|
}
|
|
|
|
state.resumeScheduled = false;
|
|
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);
|
|
if (state.flowing) {
|
|
do {
|
|
var chunk = stream.read();
|
|
} while (null !== chunk && state.flowing);
|
|
}
|
|
}
|
|
|
|
// wrap an old-style stream as the async data source.
|
|
// This is *not* part of the readable stream interface.
|
|
// It is an ugly unfortunate mess of history.
|
|
Readable.prototype.wrap = function(stream) {
|
|
var state = this._readableState;
|
|
var paused = false;
|
|
|
|
var self = this;
|
|
stream.on('end', function() {
|
|
debug('wrapped end');
|
|
if (state.decoder && !state.ended) {
|
|
var chunk = state.decoder.end();
|
|
if (chunk && chunk.length)
|
|
self.push(chunk);
|
|
}
|
|
|
|
self.push(null);
|
|
});
|
|
|
|
stream.on('data', function(chunk) {
|
|
debug('wrapped data');
|
|
if (state.decoder)
|
|
chunk = state.decoder.write(chunk);
|
|
|
|
// don't skip over falsy values in objectMode
|
|
if (state.objectMode && (chunk === null || chunk === undefined))
|
|
return;
|
|
else if (!state.objectMode && (!chunk || !chunk.length))
|
|
return;
|
|
|
|
var ret = self.push(chunk);
|
|
if (!ret) {
|
|
paused = true;
|
|
stream.pause();
|
|
}
|
|
});
|
|
|
|
// proxy all the other methods.
|
|
// important when wrapping filters and duplexes.
|
|
for (var i in stream) {
|
|
if (this[i] === undefined && typeof stream[i] === 'function') {
|
|
this[i] = function(method) { return function() {
|
|
return stream[method].apply(stream, arguments);
|
|
}; }(i);
|
|
}
|
|
}
|
|
|
|
// proxy certain important events.
|
|
var events = ['error', 'close', 'destroy', 'pause', 'resume'];
|
|
forEach(events, function(ev) {
|
|
stream.on(ev, self.emit.bind(self, ev));
|
|
});
|
|
|
|
// when we try to consume some more bytes, simply unpause the
|
|
// underlying stream.
|
|
self._read = function(n) {
|
|
debug('wrapped _read', n);
|
|
if (paused) {
|
|
paused = false;
|
|
stream.resume();
|
|
}
|
|
};
|
|
|
|
return self;
|
|
};
|
|
|
|
|
|
|
|
// exposed for testing purposes only.
|
|
Readable._fromList = fromList;
|
|
|
|
// Pluck off n bytes from an array of buffers.
|
|
// Length is the combined lengths of all the buffers in the list.
|
|
function fromList(n, state) {
|
|
var list = state.buffer;
|
|
var length = state.length;
|
|
var stringMode = !!state.decoder;
|
|
var objectMode = !!state.objectMode;
|
|
var ret;
|
|
|
|
// nothing in the list, definitely empty.
|
|
if (list.length === 0)
|
|
return null;
|
|
|
|
if (length === 0)
|
|
ret = null;
|
|
else if (objectMode)
|
|
ret = list.shift();
|
|
else if (!n || n >= length) {
|
|
// read it all, truncate the array.
|
|
if (stringMode)
|
|
ret = list.join('');
|
|
else
|
|
ret = Buffer.concat(list, length);
|
|
list.length = 0;
|
|
} else {
|
|
// read just some of it.
|
|
if (n < list[0].length) {
|
|
// just take a part of the first list item.
|
|
// slice is the same for buffers and strings.
|
|
var buf = list[0];
|
|
ret = buf.slice(0, n);
|
|
list[0] = buf.slice(n);
|
|
} else if (n === list[0].length) {
|
|
// first list is a perfect match
|
|
ret = list.shift();
|
|
} else {
|
|
// complex case.
|
|
// we have enough to cover it, but it spans past the first buffer.
|
|
if (stringMode)
|
|
ret = '';
|
|
else
|
|
ret = new Buffer(n);
|
|
|
|
var c = 0;
|
|
for (var i = 0, l = list.length; i < l && c < n; i++) {
|
|
var buf = list[0];
|
|
var cpy = Math.min(n - c, buf.length);
|
|
|
|
if (stringMode)
|
|
ret += buf.slice(0, cpy);
|
|
else
|
|
buf.copy(ret, c, 0, cpy);
|
|
|
|
if (cpy < buf.length)
|
|
list[0] = buf.slice(cpy);
|
|
else
|
|
list.shift();
|
|
|
|
c += cpy;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
function endReadable(stream) {
|
|
var state = stream._readableState;
|
|
|
|
// If we get here before consuming all the bytes, then that is a
|
|
// bug in node. Should never happen.
|
|
if (state.length > 0)
|
|
throw new Error('endReadable called on non-empty stream');
|
|
|
|
if (!state.endEmitted) {
|
|
state.ended = true;
|
|
processNextTick(endReadableNT, state, stream);
|
|
}
|
|
}
|
|
|
|
function endReadableNT(state, stream) {
|
|
// Check that we didn't get one last unshift.
|
|
if (!state.endEmitted && state.length === 0) {
|
|
state.endEmitted = true;
|
|
stream.readable = false;
|
|
stream.emit('end');
|
|
}
|
|
}
|
|
|
|
function forEach (xs, f) {
|
|
for (var i = 0, l = xs.length; i < l; i++) {
|
|
f(xs[i], i);
|
|
}
|
|
}
|
|
|
|
function indexOf (xs, x) {
|
|
for (var i = 0, l = xs.length; i < l; i++) {
|
|
if (xs[i] === x) return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
}).call(this,require('_process'))
|
|
},{"./_stream_duplex":12,"_process":9,"buffer":2,"core-util-is":17,"events":6,"inherits":18,"isarray":19,"process-nextick-args":20,"string_decoder/":21,"util":1}],15:[function(require,module,exports){
|
|
// 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 TransformState(stream) {
|
|
this.afterTransform = function(er, data) {
|
|
return afterTransform(stream, er, data);
|
|
};
|
|
|
|
this.needTransform = false;
|
|
this.transforming = false;
|
|
this.writecb = null;
|
|
this.writechunk = null;
|
|
}
|
|
|
|
function afterTransform(stream, er, data) {
|
|
var ts = stream._transformState;
|
|
ts.transforming = false;
|
|
|
|
var cb = ts.writecb;
|
|
|
|
if (!cb)
|
|
return stream.emit('error', new Error('no writecb in Transform class'));
|
|
|
|
ts.writechunk = null;
|
|
ts.writecb = null;
|
|
|
|
if (data !== null && data !== undefined)
|
|
stream.push(data);
|
|
|
|
if (cb)
|
|
cb(er);
|
|
|
|
var rs = stream._readableState;
|
|
rs.reading = false;
|
|
if (rs.needReadable || rs.length < rs.highWaterMark) {
|
|
stream._read(rs.highWaterMark);
|
|
}
|
|
}
|
|
|
|
|
|
function Transform(options) {
|
|
if (!(this instanceof Transform))
|
|
return new Transform(options);
|
|
|
|
Duplex.call(this, options);
|
|
|
|
this._transformState = new TransformState(this);
|
|
|
|
// when the writable side finishes, then flush out anything remaining.
|
|
var stream = this;
|
|
|
|
// start out asking for a readable event once data is transformed.
|
|
this._readableState.needReadable = true;
|
|
|
|
// we have implemented the _read method, and done the other things
|
|
// that Readable wants before the first _read call, so unset the
|
|
// sync guard flag.
|
|
this._readableState.sync = false;
|
|
|
|
if (options) {
|
|
if (typeof options.transform === 'function')
|
|
this._transform = options.transform;
|
|
|
|
if (typeof options.flush === 'function')
|
|
this._flush = options.flush;
|
|
}
|
|
|
|
this.once('prefinish', function() {
|
|
if (typeof this._flush === 'function')
|
|
this._flush(function(er) {
|
|
done(stream, er);
|
|
});
|
|
else
|
|
done(stream);
|
|
});
|
|
}
|
|
|
|
Transform.prototype.push = function(chunk, encoding) {
|
|
this._transformState.needTransform = false;
|
|
return Duplex.prototype.push.call(this, chunk, encoding);
|
|
};
|
|
|
|
// This is the part where you do stuff!
|
|
// override this function in implementation classes.
|
|
// 'chunk' is an input chunk.
|
|
//
|
|
// Call `push(newChunk)` to pass along transformed output
|
|
// to the readable side. You may call 'push' zero or more times.
|
|
//
|
|
// Call `cb(err)` when you are done with this chunk. If you pass
|
|
// an error, then that'll put the hurt on the whole operation. If you
|
|
// never call cb(), then you'll never get another chunk.
|
|
Transform.prototype._transform = function(chunk, encoding, cb) {
|
|
throw new Error('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;
|
|
}
|
|
};
|
|
|
|
|
|
function done(stream, er) {
|
|
if (er)
|
|
return stream.emit('error', er);
|
|
|
|
// if there's nothing in the write buffer, then that means
|
|
// that nothing more will ever be provided
|
|
var ws = stream._writableState;
|
|
var ts = stream._transformState;
|
|
|
|
if (ws.length)
|
|
throw new Error('calling transform done when ws.length != 0');
|
|
|
|
if (ts.transforming)
|
|
throw new Error('calling transform done when still transforming');
|
|
|
|
return stream.push(null);
|
|
}
|
|
|
|
},{"./_stream_duplex":12,"core-util-is":17,"inherits":18}],16:[function(require,module,exports){
|
|
// A bit simpler than readable streams.
|
|
// Implement an async ._write(chunk, cb), and it'll handle all
|
|
// the drain event emission and buffering.
|
|
|
|
'use strict';
|
|
|
|
module.exports = Writable;
|
|
|
|
/*<replacement>*/
|
|
var processNextTick = require('process-nextick-args');
|
|
/*</replacement>*/
|
|
|
|
|
|
/*<replacement>*/
|
|
var Buffer = require('buffer').Buffer;
|
|
/*</replacement>*/
|
|
|
|
Writable.WritableState = WritableState;
|
|
|
|
|
|
/*<replacement>*/
|
|
var util = require('core-util-is');
|
|
util.inherits = require('inherits');
|
|
/*</replacement>*/
|
|
|
|
|
|
|
|
/*<replacement>*/
|
|
var Stream;
|
|
(function (){try{
|
|
Stream = require('st' + 'ream');
|
|
}catch(_){Stream = require('events').EventEmitter;}}())
|
|
/*</replacement>*/
|
|
|
|
var Buffer = require('buffer').Buffer;
|
|
|
|
util.inherits(Writable, Stream);
|
|
|
|
function nop() {}
|
|
|
|
function WriteReq(chunk, encoding, cb) {
|
|
this.chunk = chunk;
|
|
this.encoding = encoding;
|
|
this.callback = cb;
|
|
this.next = null;
|
|
}
|
|
|
|
function WritableState(options, stream) {
|
|
var Duplex = require('./_stream_duplex');
|
|
|
|
options = options || {};
|
|
|
|
// object stream flag to indicate whether or not this stream
|
|
// contains buffers or objects.
|
|
this.objectMode = !!options.objectMode;
|
|
|
|
if (stream instanceof Duplex)
|
|
this.objectMode = this.objectMode || !!options.writableObjectMode;
|
|
|
|
// the point at which write() starts returning false
|
|
// Note: 0 is a valid value, means that we always return false if
|
|
// the entire buffer is not flushed immediately on write()
|
|
var hwm = options.highWaterMark;
|
|
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
|
|
this.highWaterMark = (hwm || hwm === 0) ? hwm : defaultHwm;
|
|
|
|
// cast to ints.
|
|
this.highWaterMark = ~~this.highWaterMark;
|
|
|
|
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;
|
|
|
|
// 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;
|
|
}
|
|
|
|
WritableState.prototype.getBuffer = function writableStateGetBuffer() {
|
|
var current = this.bufferedRequest;
|
|
var out = [];
|
|
while (current) {
|
|
out.push(current);
|
|
current = current.next;
|
|
}
|
|
return out;
|
|
};
|
|
|
|
(function (){try {
|
|
Object.defineProperty(WritableState.prototype, 'buffer', {
|
|
get: require('util-deprecate')(function() {
|
|
return this.getBuffer();
|
|
}, '_writableState.buffer is deprecated. Use ' +
|
|
'_writableState.getBuffer() instead.')
|
|
});
|
|
}catch(_){}}());
|
|
|
|
|
|
function Writable(options) {
|
|
var Duplex = require('./_stream_duplex');
|
|
|
|
// Writable ctor is applied to Duplexes, though they're not
|
|
// instanceof Writable, they're instanceof Readable.
|
|
if (!(this instanceof Writable) && !(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;
|
|
}
|
|
|
|
Stream.call(this);
|
|
}
|
|
|
|
// Otherwise people can pipe Writable streams, which is just wrong.
|
|
Writable.prototype.pipe = function() {
|
|
this.emit('error', new Error('Cannot pipe. Not readable.'));
|
|
};
|
|
|
|
|
|
function writeAfterEnd(stream, cb) {
|
|
var er = new Error('write after end');
|
|
// TODO: defer error events consistently everywhere, not just the cb
|
|
stream.emit('error', er);
|
|
processNextTick(cb, er);
|
|
}
|
|
|
|
// If we get something that is not a buffer, string, null, or undefined,
|
|
// and we're not in objectMode, then that's an error.
|
|
// Otherwise stream chunks are all considered to be of length=1, and the
|
|
// watermarks determine how many objects to keep in the buffer, rather than
|
|
// how many bytes or characters.
|
|
function validChunk(stream, state, chunk, cb) {
|
|
var valid = true;
|
|
|
|
if (!(Buffer.isBuffer(chunk)) &&
|
|
typeof chunk !== 'string' &&
|
|
chunk !== null &&
|
|
chunk !== undefined &&
|
|
!state.objectMode) {
|
|
var er = new TypeError('Invalid non-string/buffer chunk');
|
|
stream.emit('error', er);
|
|
processNextTick(cb, er);
|
|
valid = false;
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
Writable.prototype.write = function(chunk, encoding, cb) {
|
|
var state = this._writableState;
|
|
var ret = false;
|
|
|
|
if (typeof encoding === 'function') {
|
|
cb = encoding;
|
|
encoding = null;
|
|
}
|
|
|
|
if (Buffer.isBuffer(chunk))
|
|
encoding = 'buffer';
|
|
else if (!encoding)
|
|
encoding = state.defaultEncoding;
|
|
|
|
if (typeof cb !== 'function')
|
|
cb = nop;
|
|
|
|
if (state.ended)
|
|
writeAfterEnd(this, cb);
|
|
else if (validChunk(this, state, chunk, cb)) {
|
|
state.pendingcb++;
|
|
ret = writeOrBuffer(this, state, 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;
|
|
};
|
|
|
|
function decodeChunk(state, chunk, encoding) {
|
|
if (!state.objectMode &&
|
|
state.decodeStrings !== false &&
|
|
typeof chunk === 'string') {
|
|
chunk = new Buffer(chunk, encoding);
|
|
}
|
|
return chunk;
|
|
}
|
|
|
|
// if we're already writing something, then just put this
|
|
// in the queue, and wait our turn. Otherwise, call _write
|
|
// If we return false, then we need a drain event, so set that flag.
|
|
function writeOrBuffer(stream, state, chunk, encoding, cb) {
|
|
chunk = decodeChunk(state, chunk, encoding);
|
|
|
|
if (Buffer.isBuffer(chunk))
|
|
encoding = 'buffer';
|
|
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 = new WriteReq(chunk, encoding, cb);
|
|
if (last) {
|
|
last.next = state.lastBufferedRequest;
|
|
} else {
|
|
state.bufferedRequest = state.lastBufferedRequest;
|
|
}
|
|
} 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)
|
|
processNextTick(cb, er);
|
|
else
|
|
cb(er);
|
|
|
|
stream._writableState.errorEmitted = true;
|
|
stream.emit('error', er);
|
|
}
|
|
|
|
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) {
|
|
processNextTick(afterWrite, stream, state, finished, cb);
|
|
} else {
|
|
afterWrite(stream, state, finished, cb);
|
|
}
|
|
}
|
|
}
|
|
|
|
function afterWrite(stream, state, finished, cb) {
|
|
if (!finished)
|
|
onwriteDrain(stream, state);
|
|
state.pendingcb--;
|
|
cb();
|
|
finishMaybe(stream, state);
|
|
}
|
|
|
|
// Must force callback to be called on nextTick, so that we don't
|
|
// emit 'drain' before the write() consumer gets the 'false' return
|
|
// value, and has a chance to attach a 'drain' listener.
|
|
function onwriteDrain(stream, state) {
|
|
if (state.length === 0 && state.needDrain) {
|
|
state.needDrain = false;
|
|
stream.emit('drain');
|
|
}
|
|
}
|
|
|
|
|
|
// if there's something in the buffer waiting, then process it
|
|
function clearBuffer(stream, state) {
|
|
state.bufferProcessing = true;
|
|
var entry = state.bufferedRequest;
|
|
|
|
if (stream._writev && entry && entry.next) {
|
|
// Fast case, write everything using _writev()
|
|
var buffer = [];
|
|
var cbs = [];
|
|
while (entry) {
|
|
cbs.push(entry.callback);
|
|
buffer.push(entry);
|
|
entry = entry.next;
|
|
}
|
|
|
|
// count the one we are adding, as well.
|
|
// TODO(isaacs) clean this up
|
|
state.pendingcb++;
|
|
state.lastBufferedRequest = null;
|
|
doWrite(stream, state, true, state.length, buffer, '', function(err) {
|
|
for (var i = 0; i < cbs.length; i++) {
|
|
state.pendingcb--;
|
|
cbs[i](err);
|
|
}
|
|
});
|
|
|
|
// Clear buffer
|
|
} else {
|
|
// Slow case, write chunks one-by-one
|
|
while (entry) {
|
|
var chunk = entry.chunk;
|
|
var encoding = entry.encoding;
|
|
var cb = entry.callback;
|
|
var len = state.objectMode ? 1 : chunk.length;
|
|
|
|
doWrite(stream, state, false, len, chunk, encoding, cb);
|
|
entry = entry.next;
|
|
// if we didn't call the onwrite immediately, then
|
|
// it means that we need to wait until it does.
|
|
// also, that means that the chunk and cb are currently
|
|
// being processed, so move the buffer counter past them.
|
|
if (state.writing) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (entry === null)
|
|
state.lastBufferedRequest = null;
|
|
}
|
|
state.bufferedRequest = entry;
|
|
state.bufferProcessing = false;
|
|
}
|
|
|
|
Writable.prototype._write = function(chunk, encoding, cb) {
|
|
cb(new Error('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 prefinish(stream, state) {
|
|
if (!state.prefinished) {
|
|
state.prefinished = true;
|
|
stream.emit('prefinish');
|
|
}
|
|
}
|
|
|
|
function finishMaybe(stream, state) {
|
|
var need = needFinish(state);
|
|
if (need) {
|
|
if (state.pendingcb === 0) {
|
|
prefinish(stream, state);
|
|
state.finished = true;
|
|
stream.emit('finish');
|
|
} else {
|
|
prefinish(stream, state);
|
|
}
|
|
}
|
|
return need;
|
|
}
|
|
|
|
function endWritable(stream, state, cb) {
|
|
state.ending = true;
|
|
finishMaybe(stream, state);
|
|
if (cb) {
|
|
if (state.finished)
|
|
processNextTick(cb);
|
|
else
|
|
stream.once('finish', cb);
|
|
}
|
|
state.ended = true;
|
|
}
|
|
|
|
},{"./_stream_duplex":12,"buffer":2,"core-util-is":17,"events":6,"inherits":18,"process-nextick-args":20,"util-deprecate":22}],17:[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(ar) {
|
|
return Array.isArray(ar);
|
|
}
|
|
exports.isArray = isArray;
|
|
|
|
function isBoolean(arg) {
|
|
return typeof arg === 'boolean';
|
|
}
|
|
exports.isBoolean = isBoolean;
|
|
|
|
function isNull(arg) {
|
|
return arg === null;
|
|
}
|
|
exports.isNull = isNull;
|
|
|
|
function isNullOrUndefined(arg) {
|
|
return arg == null;
|
|
}
|
|
exports.isNullOrUndefined = isNullOrUndefined;
|
|
|
|
function isNumber(arg) {
|
|
return typeof arg === 'number';
|
|
}
|
|
exports.isNumber = isNumber;
|
|
|
|
function isString(arg) {
|
|
return typeof arg === 'string';
|
|
}
|
|
exports.isString = isString;
|
|
|
|
function isSymbol(arg) {
|
|
return typeof arg === 'symbol';
|
|
}
|
|
exports.isSymbol = isSymbol;
|
|
|
|
function isUndefined(arg) {
|
|
return arg === void 0;
|
|
}
|
|
exports.isUndefined = isUndefined;
|
|
|
|
function isRegExp(re) {
|
|
return isObject(re) && objectToString(re) === '[object RegExp]';
|
|
}
|
|
exports.isRegExp = isRegExp;
|
|
|
|
function isObject(arg) {
|
|
return typeof arg === 'object' && arg !== null;
|
|
}
|
|
exports.isObject = isObject;
|
|
|
|
function isDate(d) {
|
|
return isObject(d) && objectToString(d) === '[object Date]';
|
|
}
|
|
exports.isDate = isDate;
|
|
|
|
function isError(e) {
|
|
return isObject(e) &&
|
|
(objectToString(e) === '[object Error]' || e instanceof Error);
|
|
}
|
|
exports.isError = isError;
|
|
|
|
function isFunction(arg) {
|
|
return typeof arg === 'function';
|
|
}
|
|
exports.isFunction = isFunction;
|
|
|
|
function isPrimitive(arg) {
|
|
return arg === null ||
|
|
typeof arg === 'boolean' ||
|
|
typeof arg === 'number' ||
|
|
typeof arg === 'string' ||
|
|
typeof arg === 'symbol' || // ES6 symbol
|
|
typeof arg === 'undefined';
|
|
}
|
|
exports.isPrimitive = isPrimitive;
|
|
|
|
function isBuffer(arg) {
|
|
return Buffer.isBuffer(arg);
|
|
}
|
|
exports.isBuffer = isBuffer;
|
|
|
|
function objectToString(o) {
|
|
return Object.prototype.toString.call(o);
|
|
}
|
|
}).call(this,{"isBuffer":require("/home/nfroidure/projects/SVGPathData/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js")})
|
|
},{"/home/nfroidure/projects/SVGPathData/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js":8}],18:[function(require,module,exports){
|
|
arguments[4][7][0].apply(exports,arguments)
|
|
},{"dup":7}],19:[function(require,module,exports){
|
|
module.exports = Array.isArray || function (arr) {
|
|
return Object.prototype.toString.call(arr) == '[object Array]';
|
|
};
|
|
|
|
},{}],20:[function(require,module,exports){
|
|
(function (process){
|
|
'use strict';
|
|
module.exports = nextTick;
|
|
|
|
function nextTick(fn) {
|
|
var args = new Array(arguments.length - 1);
|
|
var i = 0;
|
|
while (i < arguments.length) {
|
|
args[i++] = arguments[i];
|
|
}
|
|
process.nextTick(function afterTick() {
|
|
fn.apply(null, args);
|
|
});
|
|
}
|
|
|
|
}).call(this,require('_process'))
|
|
},{"_process":9}],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.
|
|
|
|
var Buffer = require('buffer').Buffer;
|
|
|
|
var isBufferEncoding = Buffer.isEncoding
|
|
|| function(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 assertEncoding(encoding) {
|
|
if (encoding && !isBufferEncoding(encoding)) {
|
|
throw new Error('Unknown encoding: ' + encoding);
|
|
}
|
|
}
|
|
|
|
// StringDecoder provides an interface for efficiently splitting a series of
|
|
// buffers into a series of JS strings without breaking apart multi-byte
|
|
// characters. CESU-8 is handled as part of the UTF-8 encoding.
|
|
//
|
|
// @TODO Handling all encodings inside a single object makes it very difficult
|
|
// to reason about this code, so it should be split up in the future.
|
|
// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
|
|
// points as used by CESU-8.
|
|
var StringDecoder = exports.StringDecoder = function(encoding) {
|
|
this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
|
|
assertEncoding(encoding);
|
|
switch (this.encoding) {
|
|
case 'utf8':
|
|
// CESU-8 represents each of Surrogate Pair by 3-bytes
|
|
this.surrogateSize = 3;
|
|
break;
|
|
case 'ucs2':
|
|
case 'utf16le':
|
|
// UTF-16 represents each of Surrogate Pair by 2-bytes
|
|
this.surrogateSize = 2;
|
|
this.detectIncompleteChar = utf16DetectIncompleteChar;
|
|
break;
|
|
case 'base64':
|
|
// Base-64 stores 3 bytes in 4 chars, and pads the remainder.
|
|
this.surrogateSize = 3;
|
|
this.detectIncompleteChar = base64DetectIncompleteChar;
|
|
break;
|
|
default:
|
|
this.write = passThroughWrite;
|
|
return;
|
|
}
|
|
|
|
// Enough space to store all bytes of a single character. UTF-8 needs 4
|
|
// bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
|
|
this.charBuffer = new Buffer(6);
|
|
// Number of bytes received for the current incomplete multi-byte character.
|
|
this.charReceived = 0;
|
|
// Number of bytes expected for the current incomplete multi-byte character.
|
|
this.charLength = 0;
|
|
};
|
|
|
|
|
|
// write decodes the given buffer and returns it as JS string that is
|
|
// guaranteed to not contain any partial multi-byte characters. Any partial
|
|
// character found at the end of the buffer is buffered up, and will be
|
|
// returned when calling write again with the remaining bytes.
|
|
//
|
|
// Note: Converting a Buffer containing an orphan surrogate to a String
|
|
// currently works, but converting a String to a Buffer (via `new Buffer`, or
|
|
// Buffer#write) will replace incomplete surrogates with the unicode
|
|
// replacement character. See https://codereview.chromium.org/121173009/ .
|
|
StringDecoder.prototype.write = function(buffer) {
|
|
var charStr = '';
|
|
// if our last write ended with an incomplete multibyte character
|
|
while (this.charLength) {
|
|
// determine how many remaining bytes this buffer has to offer for this char
|
|
var available = (buffer.length >= this.charLength - this.charReceived) ?
|
|
this.charLength - this.charReceived :
|
|
buffer.length;
|
|
|
|
// add the new bytes to the char buffer
|
|
buffer.copy(this.charBuffer, this.charReceived, 0, available);
|
|
this.charReceived += available;
|
|
|
|
if (this.charReceived < this.charLength) {
|
|
// still not enough chars in this buffer? wait for more ...
|
|
return '';
|
|
}
|
|
|
|
// remove bytes belonging to the current character from the buffer
|
|
buffer = buffer.slice(available, buffer.length);
|
|
|
|
// get the character that was split
|
|
charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
|
|
|
|
// CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
|
|
var charCode = charStr.charCodeAt(charStr.length - 1);
|
|
if (charCode >= 0xD800 && charCode <= 0xDBFF) {
|
|
this.charLength += this.surrogateSize;
|
|
charStr = '';
|
|
continue;
|
|
}
|
|
this.charReceived = this.charLength = 0;
|
|
|
|
// if there are no more bytes in this buffer, just emit our char
|
|
if (buffer.length === 0) {
|
|
return charStr;
|
|
}
|
|
break;
|
|
}
|
|
|
|
// determine and set charLength / charReceived
|
|
this.detectIncompleteChar(buffer);
|
|
|
|
var end = buffer.length;
|
|
if (this.charLength) {
|
|
// buffer the incomplete character bytes we got
|
|
buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
|
|
end -= this.charReceived;
|
|
}
|
|
|
|
charStr += buffer.toString(this.encoding, 0, end);
|
|
|
|
var end = charStr.length - 1;
|
|
var charCode = charStr.charCodeAt(end);
|
|
// CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
|
|
if (charCode >= 0xD800 && charCode <= 0xDBFF) {
|
|
var size = this.surrogateSize;
|
|
this.charLength += size;
|
|
this.charReceived += size;
|
|
this.charBuffer.copy(this.charBuffer, size, 0, size);
|
|
buffer.copy(this.charBuffer, 0, 0, size);
|
|
return charStr.substring(0, end);
|
|
}
|
|
|
|
// or just emit the charStr
|
|
return charStr;
|
|
};
|
|
|
|
// detectIncompleteChar determines if there is an incomplete UTF-8 character at
|
|
// the end of the given buffer. If so, it sets this.charLength to the byte
|
|
// length that character, and sets this.charReceived to the number of bytes
|
|
// that are available for this character.
|
|
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
|
|
// determine how many bytes we have to check at the end of this buffer
|
|
var i = (buffer.length >= 3) ? 3 : buffer.length;
|
|
|
|
// Figure out if one of the last i bytes of our buffer announces an
|
|
// incomplete char.
|
|
for (; i > 0; i--) {
|
|
var c = buffer[buffer.length - i];
|
|
|
|
// See http://en.wikipedia.org/wiki/UTF-8#Description
|
|
|
|
// 110XXXXX
|
|
if (i == 1 && c >> 5 == 0x06) {
|
|
this.charLength = 2;
|
|
break;
|
|
}
|
|
|
|
// 1110XXXX
|
|
if (i <= 2 && c >> 4 == 0x0E) {
|
|
this.charLength = 3;
|
|
break;
|
|
}
|
|
|
|
// 11110XXX
|
|
if (i <= 3 && c >> 3 == 0x1E) {
|
|
this.charLength = 4;
|
|
break;
|
|
}
|
|
}
|
|
this.charReceived = i;
|
|
};
|
|
|
|
StringDecoder.prototype.end = function(buffer) {
|
|
var res = '';
|
|
if (buffer && buffer.length)
|
|
res = this.write(buffer);
|
|
|
|
if (this.charReceived) {
|
|
var cr = this.charReceived;
|
|
var buf = this.charBuffer;
|
|
var enc = this.encoding;
|
|
res += buf.slice(0, cr).toString(enc);
|
|
}
|
|
|
|
return res;
|
|
};
|
|
|
|
function passThroughWrite(buffer) {
|
|
return buffer.toString(this.encoding);
|
|
}
|
|
|
|
function utf16DetectIncompleteChar(buffer) {
|
|
this.charReceived = buffer.length % 2;
|
|
this.charLength = this.charReceived ? 2 : 0;
|
|
}
|
|
|
|
function base64DetectIncompleteChar(buffer) {
|
|
this.charReceived = buffer.length % 3;
|
|
this.charLength = this.charReceived ? 3 : 0;
|
|
}
|
|
|
|
},{"buffer":2}],22:[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) {
|
|
if (!global.localStorage) 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 : {})
|
|
},{}],23:[function(require,module,exports){
|
|
var Stream = (function (){
|
|
try {
|
|
return require('st' + 'ream'); // hack to fix a circular dependency issue when used with browserify
|
|
} catch(_){}
|
|
}());
|
|
exports = module.exports = require('./lib/_stream_readable.js');
|
|
exports.Stream = 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":12,"./lib/_stream_passthrough.js":13,"./lib/_stream_readable.js":14,"./lib/_stream_transform.js":15,"./lib/_stream_writable.js":16}],24:[function(require,module,exports){
|
|
function SVGPathData(content) {
|
|
this.commands = SVGPathData.parse(content);
|
|
}
|
|
|
|
SVGPathData.prototype.encode = function() {
|
|
return SVGPathData.encode(this.commands);
|
|
};
|
|
|
|
SVGPathData.prototype.round = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.ROUND].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.toAbs = function() {
|
|
return this.transform(SVGPathData.Transformer.TO_ABS);
|
|
};
|
|
|
|
SVGPathData.prototype.toRel = function() {
|
|
return this.transform(SVGPathData.Transformer.TO_REL);
|
|
};
|
|
|
|
SVGPathData.prototype.translate = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.TRANSLATE].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.scale = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.SCALE].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.rotate = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.ROTATE].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.matrix = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.MATRIX].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.skewX = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.SKEW_X].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.skewY = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.SKEW_Y].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.xSymetry = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.X_AXIS_SIMETRY].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.ySymetry = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.Y_AXIS_SIMETRY].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.aToC = function() {
|
|
return this.transform.apply(this, [SVGPathData.Transformer.A_TO_C].concat(
|
|
[].slice.call(arguments, 0)));
|
|
};
|
|
|
|
SVGPathData.prototype.transform = function(transformFunction) {
|
|
var newCommands = []
|
|
, transformFunction = transformFunction.apply(null, [].slice.call(arguments, 1))
|
|
, curCommands = []
|
|
, commands = this.commands;
|
|
for(var i=0, ii=commands.length; i<ii; i++) {
|
|
curCommands = transformFunction(commands[i]);
|
|
if(curCommands instanceof Array) {
|
|
newCommands = newCommands.concat(curCommands);
|
|
} else {
|
|
newCommands.push(curCommands);
|
|
}
|
|
}
|
|
this.commands = newCommands;
|
|
return this;
|
|
};
|
|
|
|
// Static methods
|
|
SVGPathData.encode = function(commands) {
|
|
var content = '', encoder = new SVGPathData.Encoder();
|
|
encoder.on('readable', function () {
|
|
var str;
|
|
do {
|
|
str = encoder.read();
|
|
if(str !== null) {
|
|
content += str;
|
|
}
|
|
} while(str !== null);
|
|
});
|
|
encoder.write(commands);
|
|
encoder.end();
|
|
return content;
|
|
};
|
|
|
|
SVGPathData.parse = function(content) {
|
|
var commands = [], parser = new SVGPathData.Parser();
|
|
parser.on('readable', function () {
|
|
var command;
|
|
do {
|
|
command = parser.read();
|
|
if(command !== null) {
|
|
commands.push(command);
|
|
}
|
|
} while(command !== null);
|
|
});
|
|
parser.write(content);
|
|
parser.end();
|
|
return commands;
|
|
};
|
|
|
|
// Commands static vars
|
|
SVGPathData.CLOSE_PATH = 1;
|
|
SVGPathData.MOVE_TO = 2;
|
|
SVGPathData.HORIZ_LINE_TO = 4;
|
|
SVGPathData.VERT_LINE_TO = 8;
|
|
SVGPathData.LINE_TO = 16;
|
|
SVGPathData.CURVE_TO = 32;
|
|
SVGPathData.SMOOTH_CURVE_TO = 64;
|
|
SVGPathData.QUAD_TO = 128;
|
|
SVGPathData.SMOOTH_QUAD_TO = 256;
|
|
SVGPathData.ARC = 512;
|
|
SVGPathData.DRAWING_COMMANDS =
|
|
SVGPathData.HORIZ_LINE_TO | SVGPathData.VERT_LINE_TO | SVGPathData.LINE_TO |
|
|
SVGPathData.CURVE_TO | SVGPathData.SMOOTH_CURVE_TO | SVGPathData.QUAD_TO |
|
|
SVGPathData.SMOOTH_QUAD_TO | SVGPathData.ARC;
|
|
|
|
// Export the main contructor first (tests are failing otherwise)
|
|
module.exports = SVGPathData;
|
|
|
|
// Expose the internal constructors
|
|
SVGPathData.Parser = require('./SVGPathDataParser.js');
|
|
SVGPathData.Encoder = require('./SVGPathDataEncoder.js');
|
|
SVGPathData.Transformer = require('./SVGPathDataTransformer.js');
|
|
|
|
|
|
},{"./SVGPathDataEncoder.js":25,"./SVGPathDataParser.js":26,"./SVGPathDataTransformer.js":27}],25:[function(require,module,exports){
|
|
(function (Buffer){
|
|
// Encode SVG PathData
|
|
// http://www.w3.org/TR/SVG/paths.html#PathDataBNF
|
|
|
|
// Access to SVGPathData constructor
|
|
var SVGPathData = require('./SVGPathData.js');
|
|
|
|
// TransformStream inherance required modules
|
|
var TransformStream = require('readable-stream').Transform;
|
|
var util = require('util');
|
|
|
|
// Private consts : Char groups
|
|
var WSP = ' ';
|
|
|
|
// Inherit of writeable stream
|
|
util.inherits(SVGPathDataEncoder, TransformStream);
|
|
|
|
// Constructor
|
|
function SVGPathDataEncoder(options) {
|
|
|
|
// Ensure new were used
|
|
if(!(this instanceof SVGPathDataEncoder)) {
|
|
return new SVGPathDataEncoder(options);
|
|
}
|
|
|
|
// Parent constructor
|
|
TransformStream.call(this, {
|
|
objectMode: true
|
|
});
|
|
|
|
// Setting objectMode separately
|
|
this._writableState.objectMode = true;
|
|
this._readableState.objectMode = false;
|
|
|
|
}
|
|
|
|
|
|
// Read method
|
|
SVGPathDataEncoder.prototype._transform = function(commands, encoding, done) {
|
|
var str = '';
|
|
if(!(commands instanceof Array)) {
|
|
commands = [commands];
|
|
}
|
|
for(var i=0, j=commands.length; i<j; i++) {
|
|
// Horizontal move to command
|
|
if(commands[i].type === SVGPathData.CLOSE_PATH) {
|
|
str += 'z';
|
|
continue;
|
|
// Horizontal move to command
|
|
} else if(commands[i].type === SVGPathData.HORIZ_LINE_TO) {
|
|
str += (commands[i].relative?'h':'H') +
|
|
commands[i].x;
|
|
// Vertical move to command
|
|
} else if(commands[i].type === SVGPathData.VERT_LINE_TO) {
|
|
str += (commands[i].relative?'v':'V') +
|
|
commands[i].y;
|
|
// Move to command
|
|
} else if(commands[i].type === SVGPathData.MOVE_TO) {
|
|
str += (commands[i].relative?'m':'M') +
|
|
commands[i].x + WSP + commands[i].y;
|
|
// Line to command
|
|
} else if(commands[i].type === SVGPathData.LINE_TO) {
|
|
str += (commands[i].relative?'l':'L') +
|
|
commands[i].x + WSP + commands[i].y;
|
|
// Curve to command
|
|
} else if(commands[i].type === SVGPathData.CURVE_TO) {
|
|
str += (commands[i].relative?'c':'C') +
|
|
commands[i].x2 + WSP + commands[i].y2 +
|
|
WSP + commands[i].x1 + WSP + commands[i].y1 +
|
|
WSP + commands[i].x + WSP + commands[i].y;
|
|
// Smooth curve to command
|
|
} else if(commands[i].type === SVGPathData.SMOOTH_CURVE_TO) {
|
|
str += (commands[i].relative?'s':'S') +
|
|
commands[i].x2 + WSP + commands[i].y2 +
|
|
WSP + commands[i].x + WSP + commands[i].y;
|
|
// Quadratic bezier curve to command
|
|
} else if(commands[i].type === SVGPathData.QUAD_TO) {
|
|
str += (commands[i].relative?'q':'Q') +
|
|
commands[i].x1 + WSP + commands[i].y1 +
|
|
WSP + commands[i].x + WSP + commands[i].y;
|
|
// Smooth quadratic bezier curve to command
|
|
} else if(commands[i].type === SVGPathData.SMOOTH_QUAD_TO) {
|
|
str += (commands[i].relative?'t':'T') +
|
|
commands[i].x + WSP + commands[i].y;
|
|
// Elliptic arc command
|
|
} else if(commands[i].type === SVGPathData.ARC) {
|
|
str += (commands[i].relative?'a':'A') +
|
|
commands[i].rX + WSP + commands[i].rY +
|
|
WSP + commands[i].xRot +
|
|
WSP + commands[i].lArcFlag + WSP + commands[i].sweepFlag +
|
|
WSP + commands[i].x + WSP + commands[i].y;
|
|
// Unkown command
|
|
} else {
|
|
this.emit('error', new Error('Unexpected command type "' +
|
|
commands[i].type + '" at index ' + i + '.'));
|
|
}
|
|
}
|
|
this.push(new Buffer(str, 'utf8'));
|
|
done();
|
|
};
|
|
|
|
module.exports = SVGPathDataEncoder;
|
|
|
|
|
|
}).call(this,require("buffer").Buffer)
|
|
},{"./SVGPathData.js":24,"buffer":2,"readable-stream":23,"util":11}],26:[function(require,module,exports){
|
|
(function (Buffer){
|
|
// Parse SVG PathData
|
|
// http://www.w3.org/TR/SVG/paths.html#PathDataBNF
|
|
|
|
// Access to SVGPathData constructor
|
|
var SVGPathData = require('./SVGPathData.js');
|
|
|
|
// TransformStream inherance required modules
|
|
var TransformStream = require('readable-stream').Transform;
|
|
var util = require('util');
|
|
|
|
// Private consts : Char groups
|
|
var WSP = [' ', '\t', '\r', '\n'];
|
|
var DIGITS = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
|
|
var SIGNS = ['-', '+'];
|
|
var EXPONENTS = ['e', 'E'];
|
|
var DECPOINT = ['.'];
|
|
var FLAGS = ['0', '1'];
|
|
var COMMA = [','];
|
|
var COMMANDS = [
|
|
'm', 'M', 'z', 'Z', 'l', 'L', 'h', 'H', 'v', 'V', 'c', 'C',
|
|
's', 'S', 'q', 'Q', 't', 'T', 'a', 'A'
|
|
];
|
|
|
|
// Inherit of transform stream
|
|
util.inherits(SVGPathDataParser, TransformStream);
|
|
|
|
// Constructor
|
|
function SVGPathDataParser(options) {
|
|
|
|
// Ensure new were used
|
|
if(!(this instanceof SVGPathDataParser)) {
|
|
return new SVGPathDataParser(options);
|
|
}
|
|
|
|
// Parent constructor
|
|
TransformStream.call(this, {
|
|
objectMode: true
|
|
});
|
|
|
|
// Setting objectMode separately
|
|
this._writableState.objectMode = false;
|
|
this._readableState.objectMode = true;
|
|
|
|
// Parsing vars
|
|
this.state = SVGPathDataParser.STATE_COMMAS_WSPS;
|
|
this.curNumber = '';
|
|
this.curCommand = null;
|
|
this._flush = function(callback) {
|
|
this._transform(new Buffer(' '), 'utf-8', function() {});
|
|
// Adding residual command
|
|
if(null !== this.curCommand) {
|
|
if(this.curCommand.invalid) {
|
|
this.emit('error',
|
|
new SyntaxError('Unterminated command at the path end.'));
|
|
}
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
this.state ^= this.state&SVGPathDataParser.STATE_COMMANDS_MASK;
|
|
}
|
|
callback();
|
|
};
|
|
this._transform = function(chunk, encoding, callback) {
|
|
var str = chunk.toString(encoding !== 'buffer' ? encoding : 'utf8');
|
|
for(var i=0, j=str.length; i<j; i++) {
|
|
// White spaces parsing
|
|
if(this.state&SVGPathDataParser.STATE_WSP ||
|
|
this.state&SVGPathDataParser.STATE_WSPS) {
|
|
if(-1 !== WSP.indexOf(str[i])) {
|
|
this.state ^= this.state&SVGPathDataParser.STATE_WSP;
|
|
// any space stops current number parsing
|
|
if('' !== this.curNumber) {
|
|
this.state ^= this.state&SVGPathDataParser.STATE_NUMBER_MASK;
|
|
} else {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
// Commas parsing
|
|
if(this.state&SVGPathDataParser.STATE_COMMA ||
|
|
this.state&SVGPathDataParser.STATE_COMMAS) {
|
|
if(-1 !== COMMA.indexOf(str[i])) {
|
|
this.state ^= this.state&SVGPathDataParser.STATE_COMMA;
|
|
// any comma stops current number parsing
|
|
if('' !== this.curNumber) {
|
|
this.state ^= this.state&SVGPathDataParser.STATE_NUMBER_MASK;
|
|
} else {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
// Numbers parsing : -125.25e-125
|
|
if(this.state&SVGPathDataParser.STATE_NUMBER) {
|
|
// Reading the sign
|
|
if((this.state&SVGPathDataParser.STATE_NUMBER_MASK) ===
|
|
SVGPathDataParser.STATE_NUMBER) {
|
|
this.state |= SVGPathDataParser.STATE_NUMBER_INT |
|
|
SVGPathDataParser.STATE_NUMBER_DIGITS;
|
|
if(-1 !== SIGNS.indexOf(str[i])) {
|
|
this.curNumber += str[i];
|
|
continue;
|
|
}
|
|
}
|
|
// Reading the exponent sign
|
|
if(this.state&SVGPathDataParser.STATE_NUMBER_EXPSIGN) {
|
|
this.state ^= SVGPathDataParser.STATE_NUMBER_EXPSIGN;
|
|
this.state |= SVGPathDataParser.STATE_NUMBER_DIGITS;
|
|
if(-1 !== SIGNS.indexOf(str[i])) {
|
|
this.curNumber += str[i];
|
|
continue;
|
|
}
|
|
}
|
|
// Reading digits
|
|
if(this.state&SVGPathDataParser.STATE_NUMBER_DIGITS) {
|
|
if(-1 !== DIGITS.indexOf(str[i])) {
|
|
this.curNumber += str[i];
|
|
continue;
|
|
}
|
|
this.state ^= SVGPathDataParser.STATE_NUMBER_DIGITS;
|
|
}
|
|
// Ended reading left side digits
|
|
if(this.state&SVGPathDataParser.STATE_NUMBER_INT) {
|
|
this.state ^= SVGPathDataParser.STATE_NUMBER_INT;
|
|
// if got a point, reading right side digits
|
|
if(-1 !== DECPOINT.indexOf(str[i])) {
|
|
this.curNumber += str[i];
|
|
this.state |= SVGPathDataParser.STATE_NUMBER_FLOAT |
|
|
SVGPathDataParser.STATE_NUMBER_DIGITS;
|
|
continue;
|
|
// if got e/E, reading the exponent
|
|
} else if(-1 !== EXPONENTS.indexOf(str[i])) {
|
|
this.curNumber += str[i];
|
|
this.state |= SVGPathDataParser.STATE_NUMBER_EXP |
|
|
SVGPathDataParser.STATE_NUMBER_EXPSIGN;
|
|
continue;
|
|
}
|
|
// else we're done with that number
|
|
this.state ^= this.state&SVGPathDataParser.STATE_NUMBER_MASK;
|
|
}
|
|
// Ended reading decimal digits
|
|
if(this.state&SVGPathDataParser.STATE_NUMBER_FLOAT) {
|
|
this.state ^= SVGPathDataParser.STATE_NUMBER_FLOAT;
|
|
// if got e/E, reading the exponent
|
|
if(-1 !== EXPONENTS.indexOf(str[i])) {
|
|
this.curNumber += str[i];
|
|
this.state |= SVGPathDataParser.STATE_NUMBER_EXP |
|
|
SVGPathDataParser.STATE_NUMBER_EXPSIGN;
|
|
continue;
|
|
}
|
|
// else we're done with that number
|
|
this.state ^= this.state&SVGPathDataParser.STATE_NUMBER_MASK;
|
|
}
|
|
// Ended reading exponent digits
|
|
if(this.state&SVGPathDataParser.STATE_NUMBER_EXP) {
|
|
// we're done with that number
|
|
this.state ^= this.state&SVGPathDataParser.STATE_NUMBER_MASK;
|
|
}
|
|
}
|
|
// New number
|
|
if(this.curNumber) {
|
|
// Horizontal move to command (x)
|
|
if(this.state&SVGPathDataParser.STATE_HORIZ_LINE_TO) {
|
|
if(null === this.curCommand) {
|
|
this.push({
|
|
type: SVGPathData.HORIZ_LINE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
x: Number(this.curNumber)
|
|
});
|
|
} else {
|
|
this.curCommand.x = Number(this.curNumber);
|
|
delete this.curCommand.invalid;
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
}
|
|
this.state |= SVGPathDataParser.STATE_NUMBER;
|
|
// Vertical move to command (y)
|
|
} else if(this.state&SVGPathDataParser.STATE_VERT_LINE_TO) {
|
|
if(null === this.curCommand) {
|
|
this.push({
|
|
type: SVGPathData.VERT_LINE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
y: Number(this.curNumber)
|
|
});
|
|
} else {
|
|
this.curCommand.y = Number(this.curNumber);
|
|
delete this.curCommand.invalid;
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
}
|
|
this.state |= SVGPathDataParser.STATE_NUMBER;
|
|
// Move to / line to / smooth quadratic curve to commands (x, y)
|
|
} else if(this.state&SVGPathDataParser.STATE_MOVE_TO ||
|
|
this.state&SVGPathDataParser.STATE_LINE_TO ||
|
|
this.state&SVGPathDataParser.STATE_SMOOTH_QUAD_TO) {
|
|
if(null === this.curCommand) {
|
|
this.curCommand = {
|
|
type: (this.state&SVGPathDataParser.STATE_MOVE_TO ?
|
|
SVGPathData.MOVE_TO :
|
|
(this.state&SVGPathDataParser.STATE_LINE_TO ?
|
|
SVGPathData.LINE_TO : SVGPathData.SMOOTH_QUAD_TO
|
|
)
|
|
),
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
x: Number(this.curNumber)
|
|
};
|
|
} else if('undefined' === typeof this.curCommand.x) {
|
|
this.curCommand.x = Number(this.curNumber);
|
|
} else {
|
|
delete this.curCommand.invalid;
|
|
this.curCommand.y = Number(this.curNumber);
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
// Switch to line to state
|
|
if(this.state&SVGPathDataParser.STATE_MOVE_TO) {
|
|
this.state ^= SVGPathDataParser.STATE_MOVE_TO;
|
|
this.state |= SVGPathDataParser.STATE_LINE_TO;
|
|
}
|
|
}
|
|
this.state |= SVGPathDataParser.STATE_NUMBER;
|
|
// Curve to commands (x1, y1, x2, y2, x, y)
|
|
} else if(this.state&SVGPathDataParser.STATE_CURVE_TO) {
|
|
if(null === this.curCommand) {
|
|
this.curCommand = {
|
|
type: SVGPathData.CURVE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true,
|
|
x2: Number(this.curNumber)
|
|
};
|
|
} else if('undefined' === typeof this.curCommand.x2) {
|
|
this.curCommand.x2 = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.y2) {
|
|
this.curCommand.y2 = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.x1) {
|
|
this.curCommand.x1 = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.y1) {
|
|
this.curCommand.y1 = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.x) {
|
|
this.curCommand.x = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.y) {
|
|
this.curCommand.y = Number(this.curNumber);
|
|
delete this.curCommand.invalid;
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
}
|
|
this.state |= SVGPathDataParser.STATE_NUMBER;
|
|
// Smooth curve to commands (x1, y1, x, y)
|
|
} else if(this.state&SVGPathDataParser.STATE_SMOOTH_CURVE_TO) {
|
|
if(null === this.curCommand) {
|
|
this.curCommand = {
|
|
type: SVGPathData.SMOOTH_CURVE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true,
|
|
x2: Number(this.curNumber)
|
|
};
|
|
} else if('undefined' === typeof this.curCommand.x2) {
|
|
this.curCommand.x2 = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.y2) {
|
|
this.curCommand.y2 = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.x) {
|
|
this.curCommand.x = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.y) {
|
|
this.curCommand.y = Number(this.curNumber);
|
|
delete this.curCommand.invalid;
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
}
|
|
this.state |= SVGPathDataParser.STATE_NUMBER;
|
|
// Quadratic bezier curve to commands (x1, y1, x, y)
|
|
} else if(this.state&SVGPathDataParser.STATE_QUAD_TO) {
|
|
if(null === this.curCommand) {
|
|
this.curCommand = {
|
|
type: SVGPathData.QUAD_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true,
|
|
x1: Number(this.curNumber)
|
|
};
|
|
} else if('undefined' === typeof this.curCommand.x1) {
|
|
this.curCommand.x1 = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.y1) {
|
|
this.curCommand.y1 = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.x) {
|
|
this.curCommand.x = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.y) {
|
|
this.curCommand.y = Number(this.curNumber);
|
|
delete this.curCommand.invalid;
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
}
|
|
this.state |= SVGPathDataParser.STATE_NUMBER;
|
|
// Elliptic arc commands (rX, rY, xRot, lArcFlag, sweepFlag, x, y)
|
|
} else if(this.state&SVGPathDataParser.STATE_ARC) {
|
|
if(null === this.curCommand) {
|
|
this.curCommand = {
|
|
type: SVGPathData.ARC,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true,
|
|
rX: Number(this.curNumber)
|
|
};
|
|
} else if('undefined' === typeof this.curCommand.rX) {
|
|
if(Number(this.curNumber) < 0) {
|
|
this.emit('error', new SyntaxError('Expected positive number,' +
|
|
' got "' + this.curNumber + '" at index "' + i + '"'));
|
|
}
|
|
this.curCommand.rX = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.rY) {
|
|
if(Number(this.curNumber) < 0) {
|
|
this.emit('error', new SyntaxError('Expected positive number,' +
|
|
' got "' + this.curNumber + '" at index "' + i + '"'));
|
|
}
|
|
this.curCommand.rY = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.xRot) {
|
|
this.curCommand.xRot = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.lArcFlag) {
|
|
if('0' !== this.curNumber && '1' !== this.curNumber) {
|
|
this.emit('error', new SyntaxError('Expected a flag, got "' +
|
|
this.curNumber + '" at index "' + i + '"'));
|
|
}
|
|
this.curCommand.lArcFlag = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.sweepFlag) {
|
|
if('0' !== this.curNumber && '1' !== this.curNumber) {
|
|
this.emit('error', new SyntaxError('Expected a flag, got "' +
|
|
this.curNumber +'" at index "' + i + '"'));
|
|
}
|
|
this.curCommand.sweepFlag = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.x) {
|
|
this.curCommand.x = Number(this.curNumber);
|
|
} else if('undefined' === typeof this.curCommand.y) {
|
|
this.curCommand.y = Number(this.curNumber);
|
|
delete this.curCommand.invalid;
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
}
|
|
this.state |= SVGPathDataParser.STATE_NUMBER;
|
|
}
|
|
this.curNumber = '';
|
|
// Continue if a white space or a comma was detected
|
|
if(-1 !== WSP.indexOf(str[i]) || -1 !== COMMA.indexOf(str[i])) {
|
|
continue;
|
|
}
|
|
// if a sign is detected, then parse the new number
|
|
if(-1 !== SIGNS.indexOf(str[i])) {
|
|
this.curNumber = str[i];
|
|
this.state |= SVGPathDataParser.STATE_NUMBER_INT |
|
|
SVGPathDataParser.STATE_NUMBER_DIGITS;
|
|
continue;
|
|
}
|
|
// if the decpoint is detected, then parse the new number
|
|
if(-1 !== DECPOINT.indexOf(str[i])) {
|
|
this.curNumber = str[i];
|
|
this.state |= SVGPathDataParser.STATE_NUMBER_FLOAT |
|
|
SVGPathDataParser.STATE_NUMBER_DIGITS;
|
|
continue;
|
|
}
|
|
}
|
|
// End of a command
|
|
if(-1 !== COMMANDS.indexOf(str[i])) {
|
|
// Adding residual command
|
|
if(null !== this.curCommand) {
|
|
if(this.curCommand.invalid) {
|
|
this.emit('error',
|
|
new SyntaxError('Unterminated command at index ' + i + '.'));
|
|
}
|
|
this.push(this.curCommand);
|
|
this.curCommand = null;
|
|
this.state ^= this.state&SVGPathDataParser.STATE_COMMANDS_MASK;
|
|
}
|
|
}
|
|
// Detecting the next command
|
|
this.state ^= this.state&SVGPathDataParser.STATE_COMMANDS_MASK;
|
|
// Is the command relative
|
|
if(str[i]===str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_RELATIVE;
|
|
} else {
|
|
this.state ^= this.state&SVGPathDataParser.STATE_RELATIVE;
|
|
}
|
|
// Horizontal move to command
|
|
if('z' === str[i].toLowerCase()) {
|
|
this.push({
|
|
type: SVGPathData.CLOSE_PATH
|
|
});
|
|
this.state = SVGPathDataParser.STATE_COMMAS_WSPS;
|
|
continue;
|
|
// Horizontal move to command
|
|
} else if('h' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_HORIZ_LINE_TO;
|
|
this.curCommand = {
|
|
type: SVGPathData.HORIZ_LINE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Vertical move to command
|
|
} else if('v' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_VERT_LINE_TO;
|
|
this.curCommand = {
|
|
type: SVGPathData.VERT_LINE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Move to command
|
|
} else if('m' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_MOVE_TO;
|
|
this.curCommand = {
|
|
type: SVGPathData.MOVE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Line to command
|
|
} else if('l' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_LINE_TO;
|
|
this.curCommand = {
|
|
type: SVGPathData.LINE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Curve to command
|
|
} else if('c' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_CURVE_TO;
|
|
this.curCommand = {
|
|
type: SVGPathData.CURVE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Smooth curve to command
|
|
} else if('s' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_SMOOTH_CURVE_TO;
|
|
this.curCommand = {
|
|
type: SVGPathData.SMOOTH_CURVE_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Quadratic bezier curve to command
|
|
} else if('q' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_QUAD_TO;
|
|
this.curCommand = {
|
|
type: SVGPathData.QUAD_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Smooth quadratic bezier curve to command
|
|
} else if('t' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_SMOOTH_QUAD_TO;
|
|
this.curCommand = {
|
|
type: SVGPathData.SMOOTH_QUAD_TO,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Elliptic arc command
|
|
} else if('a' === str[i].toLowerCase()) {
|
|
this.state |= SVGPathDataParser.STATE_ARC;
|
|
this.curCommand = {
|
|
type: SVGPathData.ARC,
|
|
relative: !!(this.state&SVGPathDataParser.STATE_RELATIVE),
|
|
invalid: true
|
|
};
|
|
// Unkown command
|
|
} else {
|
|
this.emit('error', new SyntaxError('Unexpected character "' + str[i] +
|
|
'" at index ' + i + '.'));
|
|
}
|
|
// White spaces can follow a command
|
|
this.state |= SVGPathDataParser.STATE_COMMAS_WSPS |
|
|
SVGPathDataParser.STATE_NUMBER;
|
|
}
|
|
callback();
|
|
};
|
|
}
|
|
|
|
// Static consts
|
|
// Parsing states
|
|
SVGPathDataParser.STATE_WSP = 1;
|
|
SVGPathDataParser.STATE_WSPS = 2;
|
|
SVGPathDataParser.STATE_COMMA = 4;
|
|
SVGPathDataParser.STATE_COMMAS = 8;
|
|
SVGPathDataParser.STATE_COMMAS_WSPS =
|
|
SVGPathDataParser.STATE_WSP | SVGPathDataParser.STATE_WSPS |
|
|
SVGPathDataParser.STATE_COMMA | SVGPathDataParser.STATE_COMMAS;
|
|
SVGPathDataParser.STATE_NUMBER = 16;
|
|
SVGPathDataParser.STATE_NUMBER_DIGITS = 32;
|
|
SVGPathDataParser.STATE_NUMBER_INT = 64;
|
|
SVGPathDataParser.STATE_NUMBER_FLOAT = 128;
|
|
SVGPathDataParser.STATE_NUMBER_EXP = 256;
|
|
SVGPathDataParser.STATE_NUMBER_EXPSIGN = 512;
|
|
SVGPathDataParser.STATE_NUMBER_MASK = SVGPathDataParser.STATE_NUMBER |
|
|
SVGPathDataParser.STATE_NUMBER_DIGITS | SVGPathDataParser.STATE_NUMBER_INT |
|
|
SVGPathDataParser.STATE_NUMBER_EXP | SVGPathDataParser.STATE_NUMBER_FLOAT;
|
|
SVGPathDataParser.STATE_RELATIVE = 1024;
|
|
SVGPathDataParser.STATE_CLOSE_PATH = 2048; // Close path command (z/Z)
|
|
SVGPathDataParser.STATE_MOVE_TO = 4096; // Move to command (m/M)
|
|
SVGPathDataParser.STATE_LINE_TO = 8192; // Line to command (l/L=)
|
|
SVGPathDataParser.STATE_HORIZ_LINE_TO = 16384; // Horizontal line to command (h/H)
|
|
SVGPathDataParser.STATE_VERT_LINE_TO = 32768; // Vertical line to command (v/V)
|
|
SVGPathDataParser.STATE_CURVE_TO = 65536; // Curve to command (c/C)
|
|
SVGPathDataParser.STATE_SMOOTH_CURVE_TO = 131072; // Smooth curve to command (s/S)
|
|
SVGPathDataParser.STATE_QUAD_TO = 262144; // Quadratic bezier curve to command (q/Q)
|
|
SVGPathDataParser.STATE_SMOOTH_QUAD_TO = 524288; // Smooth quadratic bezier curve to command (t/T)
|
|
SVGPathDataParser.STATE_ARC = 1048576; // Elliptic arc command (a/A)
|
|
SVGPathDataParser.STATE_COMMANDS_MASK =
|
|
SVGPathDataParser.STATE_CLOSE_PATH | SVGPathDataParser.STATE_MOVE_TO |
|
|
SVGPathDataParser.STATE_LINE_TO | SVGPathDataParser.STATE_HORIZ_LINE_TO |
|
|
SVGPathDataParser.STATE_VERT_LINE_TO | SVGPathDataParser.STATE_CURVE_TO |
|
|
SVGPathDataParser.STATE_SMOOTH_CURVE_TO | SVGPathDataParser.STATE_QUAD_TO |
|
|
SVGPathDataParser.STATE_SMOOTH_QUAD_TO | SVGPathDataParser.STATE_ARC;
|
|
|
|
module.exports = SVGPathDataParser;
|
|
|
|
|
|
}).call(this,require("buffer").Buffer)
|
|
},{"./SVGPathData.js":24,"buffer":2,"readable-stream":23,"util":11}],27:[function(require,module,exports){
|
|
// Transform SVG PathData
|
|
// http://www.w3.org/TR/SVG/paths.html#PathDataBNF
|
|
|
|
// a2c utility
|
|
var a2c = require('./a2c.js');
|
|
|
|
// Access to SVGPathData constructor
|
|
var SVGPathData = require('./SVGPathData.js');
|
|
|
|
// TransformStream inherance required modules
|
|
var TransformStream = require('readable-stream').Transform;
|
|
var util = require('util');
|
|
|
|
// Inherit of transform stream
|
|
util.inherits(SVGPathDataTransformer, TransformStream);
|
|
|
|
function SVGPathDataTransformer(transformFunction) {
|
|
// Ensure new were used
|
|
if(!(this instanceof SVGPathDataTransformer)) {
|
|
return new (SVGPathDataTransformer.bind.apply(SVGPathDataTransformer,
|
|
[SVGPathDataTransformer].concat([].slice.call(arguments, 0))));
|
|
}
|
|
|
|
// Transform function needed
|
|
if('function' !== typeof transformFunction) {
|
|
throw new Error('Please provide a transform callback to receive commands.');
|
|
}
|
|
this._transformer = transformFunction.apply(null, [].slice.call(arguments, 1));
|
|
if('function' !== typeof this._transformer) {
|
|
throw new Error('Please provide a valid transform (returning a function).');
|
|
}
|
|
|
|
// Parent constructor
|
|
TransformStream.call(this, {
|
|
objectMode: true
|
|
});
|
|
}
|
|
|
|
SVGPathDataTransformer.prototype._transform = function(commands, encoding, done) {
|
|
if(!(commands instanceof Array)) {
|
|
commands = [commands];
|
|
}
|
|
for(var i=0, j=commands.length; i<j; i++) {
|
|
this.push(this._transformer(commands[i]));
|
|
}
|
|
done();
|
|
};
|
|
|
|
// Predefined transforming functions
|
|
// Rounds commands values
|
|
SVGPathDataTransformer.ROUND = function roundGenerator(roundVal) {
|
|
roundVal = roundVal || 10e12;
|
|
return function round(command) {
|
|
// x1/y1 values
|
|
if('undefined' !== typeof command.x1) {
|
|
command.x1 = Math.round(command.x1*roundVal)/roundVal;
|
|
}
|
|
if('undefined' !== typeof command.y1) {
|
|
command.y1 = Math.round(command.y1*roundVal)/roundVal;
|
|
}
|
|
// x2/y2 values
|
|
if('undefined' !== typeof command.x2) {
|
|
command.x2 = Math.round(command.x2*roundVal)/roundVal;
|
|
}
|
|
if('undefined' !== typeof command.y2) {
|
|
command.y2 = Math.round(command.y2*roundVal)/roundVal;
|
|
}
|
|
// Finally x/y values
|
|
if('undefined' !== typeof command.x) {
|
|
command.x = Math.round(command.x*roundVal,12)/roundVal;
|
|
}
|
|
if('undefined' !== typeof command.y) {
|
|
command.y = Math.round(command.y*roundVal,12)/roundVal;
|
|
}
|
|
return command;
|
|
};
|
|
};
|
|
|
|
// Relative to absolute commands
|
|
SVGPathDataTransformer.TO_ABS = function toAbsGenerator() {
|
|
var prevX = 0, prevY = 0, pathStartX = NaN, pathStartY = NaN;
|
|
return function toAbs(command) {
|
|
if(isNaN(pathStartX) && (command.type&SVGPathData.DRAWING_COMMANDS)) {
|
|
pathStartX = prevX;
|
|
pathStartY = prevY;
|
|
}
|
|
if((command.type&SVGPathData.CLOSE_PATH) && !isNaN(pathStartX)) {
|
|
prevX = isNaN(pathStartX) ? 0 : pathStartX;
|
|
prevY = isNaN(pathStartY) ? 0 : pathStartY;
|
|
pathStartX = NaN;
|
|
pathStartY = NaN;
|
|
}
|
|
if(command.relative) {
|
|
// x1/y1 values
|
|
if('undefined' !== typeof command.x1) {
|
|
command.x1 = prevX + command.x1;
|
|
}
|
|
if('undefined' !== typeof command.y1) {
|
|
command.y1 = prevY + command.y1;
|
|
}
|
|
// x2/y2 values
|
|
if('undefined' !== typeof command.x2) {
|
|
command.x2 = prevX + command.x2;
|
|
}
|
|
if('undefined' !== typeof command.y2) {
|
|
command.y2 = prevY + command.y2;
|
|
}
|
|
// Finally x/y values
|
|
if('undefined' !== typeof command.x) {
|
|
command.x = prevX + command.x;
|
|
}
|
|
if('undefined' !== typeof command.y) {
|
|
command.y = prevY + command.y;
|
|
}
|
|
command.relative = false;
|
|
}
|
|
prevX = ('undefined' !== typeof command.x ? command.x : prevX);
|
|
prevY = ('undefined' !== typeof command.y ? command.y : prevY);
|
|
return command;
|
|
};
|
|
};
|
|
|
|
// Absolute to relative commands
|
|
SVGPathDataTransformer.TO_REL = function toRelGenerator() {
|
|
var prevX = 0, prevY = 0;
|
|
return function toRel(command) {
|
|
if(!command.relative) {
|
|
// x1/y1 values
|
|
if('undefined' !== typeof command.x1) {
|
|
command.x1 = command.x1 - prevX;
|
|
}
|
|
if('undefined' !== typeof command.y1) {
|
|
command.y1 = command.y1 - prevY;
|
|
}
|
|
// x2/y2 values
|
|
if('undefined' !== typeof command.x2) {
|
|
command.x2 = command.x2 - prevX;
|
|
}
|
|
if('undefined' !== typeof command.y2) {
|
|
command.y2 = command.y2 - prevY;
|
|
}
|
|
// Finally x/y values
|
|
if('undefined' !== typeof command.x) {
|
|
command.x = command.x - prevX;
|
|
}
|
|
if('undefined' !== typeof command.y) {
|
|
command.y = command.y - prevY;
|
|
}
|
|
command.relative = true;
|
|
}
|
|
prevX = ('undefined' !== typeof command.x ? prevX + command.x : prevX);
|
|
prevY = ('undefined' !== typeof command.y ? prevY + command.y : prevY);
|
|
return command;
|
|
};
|
|
};
|
|
|
|
// SVG Transforms : http://www.w3.org/TR/SVGTiny12/coords.html#TransformList
|
|
// Matrix : http://apike.ca/prog_svg_transform.html
|
|
SVGPathDataTransformer.MATRIX = function matrixGenerator(a, b, c, d, e, f) {
|
|
var prevX, prevY;
|
|
if('number' !== typeof a, 'number' !== typeof b,
|
|
'number' !== typeof c, 'number' !== typeof d,
|
|
'number' !== typeof e, 'number' !== typeof f) {
|
|
throw new Error('A matrix transformation requires parameters' +
|
|
' [a,b,c,d,e,f] to be set and to be numbers.');
|
|
}
|
|
return function matrix(command) {
|
|
var origX = command.x;
|
|
var origX1 = command.x1;
|
|
var origX2 = command.x2;
|
|
var origRX = command.rX;
|
|
|
|
if('undefined' !== typeof command.x) {
|
|
command.x = command.x * a +
|
|
('undefined' !== typeof command.y ?
|
|
command.y : (command.relative ? 0 : prevY || 0)
|
|
) * c +
|
|
(command.relative && 'undefined' !== typeof prevX ? 0 : e);
|
|
}
|
|
if('undefined' !== typeof command.y) {
|
|
command.y = ('undefined' !== typeof origX ?
|
|
origX : (command.relative ? 0 : prevX || 0)
|
|
) * b +
|
|
command.y * d +
|
|
(command.relative && 'undefined' !== typeof prevY ? 0 : f);
|
|
}
|
|
if('undefined' !== typeof command.x1) {
|
|
command.x1 = command.x1 * a + command.y1 * c +
|
|
(command.relative && 'undefined' !== typeof prevX ? 0 : e);
|
|
}
|
|
if('undefined' !== typeof command.y1) {
|
|
command.y1 = origX1 * b + command.y1 * d +
|
|
(command.relative && 'undefined' !== typeof prevY ? 0 : f);
|
|
}
|
|
if('undefined' !== typeof command.x2) {
|
|
command.x2 = command.x2 * a + command.y2 * c +
|
|
(command.relative && 'undefined' !== typeof prevX ? 0 : e);
|
|
}
|
|
if('undefined' !== typeof command.y2) {
|
|
command.y2 = origX2 * b + command.y2 * d +
|
|
(command.relative && 'undefined' !== typeof prevY ? 0 : f);
|
|
}
|
|
// sweepFlag needs to be inverted when mirroring shapes
|
|
// see http://www.itk.ilstu.edu/faculty/javila/SVG/SVG_drawing1/elliptical_curve.htm
|
|
// m 65,10 a 50,25 0 1 0 50,25
|
|
// M 65,60 A 50,25 0 1 1 115,35
|
|
if('undefined' !== typeof command.sweepFlag) {
|
|
command.sweepFlag = (command.sweepFlag + (d >= 0 ? 0 : 1)) % 2 ;
|
|
}
|
|
|
|
prevX = ('undefined' !== typeof command.x ?
|
|
(command.relative ? (prevX || 0) + command.x : command.x) :
|
|
prevX || 0);
|
|
prevY = ('undefined' !== typeof command.y ?
|
|
(command.relative ? (prevY || 0) + command.y : command.y) :
|
|
prevY || 0);
|
|
return command;
|
|
};
|
|
};
|
|
|
|
// Rotation
|
|
SVGPathDataTransformer.ROTATE = function rotateGenerator(a, x, y) {
|
|
if('number' !== typeof a) {
|
|
throw new Error('A rotate transformation requires the parameter a' +
|
|
' to be set and to be a number.');
|
|
}
|
|
return (function(toOrigin, doRotate, fromOrigin) {
|
|
return function rotate(command) {
|
|
return fromOrigin(doRotate(toOrigin(command)));
|
|
};
|
|
})(SVGPathDataTransformer.TRANSLATE(-(x || 0), -(y || 0)),
|
|
SVGPathDataTransformer.MATRIX(Math.cos(a), Math.sin(a),
|
|
-Math.sin(a), Math.cos(a), 0, 0),
|
|
SVGPathDataTransformer.TRANSLATE(x || 0, y || 0)
|
|
);
|
|
};
|
|
|
|
// Translation
|
|
SVGPathDataTransformer.TRANSLATE = function translateGenerator(dX, dY) {
|
|
if('number' !== typeof dX) {
|
|
throw new Error('A translate transformation requires the parameter dX' +
|
|
' to be set and to be a number.');
|
|
}
|
|
return SVGPathDataTransformer.MATRIX(1, 0, 0, 1, dX, dY || 0);
|
|
};
|
|
|
|
// Scaling
|
|
SVGPathDataTransformer.SCALE = function scaleGenerator(dX, dY) {
|
|
if('number' !== typeof dX) {
|
|
throw new Error('A scale transformation requires the parameter dX' +
|
|
' to be set and to be a number.');
|
|
}
|
|
return SVGPathDataTransformer.MATRIX(dX, 0, 0, dY || dX, 0, 0);
|
|
};
|
|
|
|
// Skew
|
|
SVGPathDataTransformer.SKEW_X = function skewXGenerator(a) {
|
|
if('number' !== typeof a) {
|
|
throw new Error('A skewX transformation requires the parameter x' +
|
|
' to be set and to be a number.');
|
|
}
|
|
return SVGPathDataTransformer.MATRIX(1, 0, Math.atan(a), 1, 0, 0);
|
|
};
|
|
SVGPathDataTransformer.SKEW_Y = function skewYGenerator(a) {
|
|
if('number' !== typeof a) {
|
|
throw new Error('A skewY transformation requires the parameter y' +
|
|
' to be set and to be a number.');
|
|
}
|
|
return SVGPathDataTransformer.MATRIX(1, Math.atan(a), 0, 1, 0, 0);
|
|
};
|
|
|
|
// Symetry througth the X axis
|
|
SVGPathDataTransformer.X_AXIS_SIMETRY = function xSymetryGenerator(xDecal) {
|
|
return (function(toAbs, scale, translate) {
|
|
return function xSymetry(command) {
|
|
return translate(scale(toAbs(command)));
|
|
};
|
|
})(SVGPathDataTransformer.TO_ABS(),
|
|
SVGPathDataTransformer.SCALE(-1, 1),
|
|
SVGPathDataTransformer.TRANSLATE(xDecal || 0, 0)
|
|
);
|
|
};
|
|
|
|
// Symetry througth the Y axis
|
|
SVGPathDataTransformer.Y_AXIS_SIMETRY = function ySymetryGenerator(yDecal) {
|
|
return (function(toAbs, scale, translate) {
|
|
return function ySymetry(command) {
|
|
return translate(scale(toAbs(command)));
|
|
};
|
|
})(SVGPathDataTransformer.TO_ABS(),
|
|
SVGPathDataTransformer.SCALE(1, -1),
|
|
SVGPathDataTransformer.TRANSLATE(0, yDecal || 0)
|
|
);
|
|
};
|
|
|
|
// Convert arc commands to curve commands
|
|
SVGPathDataTransformer.A_TO_C = function a2CGenerator() {
|
|
var prevX = 0, prevY = 0, args;
|
|
return (function(toAbs) {
|
|
return function a2C(command) {
|
|
var commands = [];
|
|
command = toAbs(command);
|
|
if(command.type === SVGPathData.ARC) {
|
|
args = a2c(prevX, prevY, command.rX, command.rX, command.xRot,
|
|
command.lArcFlag, command.sweepFlag, command.x, command.y);
|
|
prevX = command.x; prevY = command.y;
|
|
for(var i=0, ii=args.length; i<ii; i+=6) {
|
|
commands.push({
|
|
type: SVGPathData.CURVE_TO,
|
|
relative: false,
|
|
x2: args[i],
|
|
y2: args[i+1],
|
|
x1: args[i+2],
|
|
y1: args[i+3],
|
|
x: args[i+4],
|
|
y: args[i+5]
|
|
});
|
|
}
|
|
return commands;
|
|
} else {
|
|
prevX = command.x; prevY = command.y;
|
|
return command;
|
|
}
|
|
};
|
|
})(SVGPathDataTransformer.TO_ABS());
|
|
};
|
|
|
|
module.exports = SVGPathDataTransformer;
|
|
|
|
},{"./SVGPathData.js":24,"./a2c.js":28,"readable-stream":23,"util":11}],28:[function(require,module,exports){
|
|
// Borrowed from https://github.com/PPvG/svg-path/blob/master/lib/Path.js#L208
|
|
// that were borrowed from https://github.com/DmitryBaranovskiy/raphael/blob/4d97d4ff5350bb949b88e6d78b877f76ea8b5e24/raphael.js#L2216-L2304
|
|
// (MIT licensed; http://raphaeljs.com/license.html).
|
|
|
|
module.exports = a2c;
|
|
|
|
// LOL
|
|
var PI = Math.PI;
|
|
var math = Math;
|
|
var abs = Math.abs;
|
|
var split = "split";
|
|
var concat = "concat";
|
|
var apply = "apply";
|
|
var has = "hasOwnProperty";
|
|
|
|
function a2c(x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {
|
|
// for more information of where this math came from visit:
|
|
// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
|
|
var _120 = PI * 120 / 180,
|
|
rad = PI / 180 * (+angle || 0),
|
|
res = [],
|
|
xy,
|
|
rotate = cacher(function (x, y, rad) {
|
|
var X = x * math.cos(rad) - y * math.sin(rad),
|
|
Y = x * math.sin(rad) + y * math.cos(rad);
|
|
return {x: X, y: Y};
|
|
});
|
|
if (!recursive) {
|
|
xy = rotate(x1, y1, -rad);
|
|
x1 = xy.x;
|
|
y1 = xy.y;
|
|
xy = rotate(x2, y2, -rad);
|
|
x2 = xy.x;
|
|
y2 = xy.y;
|
|
var cos = math.cos(PI / 180 * angle),
|
|
sin = math.sin(PI / 180 * angle),
|
|
x = (x1 - x2) / 2,
|
|
y = (y1 - y2) / 2;
|
|
var h = (x * x) / (rx * rx) + (y * y) / (ry * ry);
|
|
if (h > 1) {
|
|
h = math.sqrt(h);
|
|
rx = h * rx;
|
|
ry = h * ry;
|
|
}
|
|
var rx2 = rx * rx,
|
|
ry2 = ry * ry,
|
|
k = (large_arc_flag == sweep_flag ? -1 : 1) *
|
|
math.sqrt(abs((rx2 * ry2 - rx2 * y * y - ry2 * x * x) / (rx2 * y * y + ry2 * x * x))),
|
|
cx = k * rx * y / ry + (x1 + x2) / 2,
|
|
cy = k * -ry * x / rx + (y1 + y2) / 2,
|
|
f1 = math.asin(((y1 - cy) / ry).toFixed(9)),
|
|
f2 = math.asin(((y2 - cy) / ry).toFixed(9));
|
|
|
|
f1 = x1 < cx ? PI - f1 : f1;
|
|
f2 = x2 < cx ? PI - f2 : f2;
|
|
f1 < 0 && (f1 = PI * 2 + f1);
|
|
f2 < 0 && (f2 = PI * 2 + f2);
|
|
if (sweep_flag && f1 > f2) {
|
|
f1 = f1 - PI * 2;
|
|
}
|
|
if (!sweep_flag && f2 > f1) {
|
|
f2 = f2 - PI * 2;
|
|
}
|
|
} else {
|
|
f1 = recursive[0];
|
|
f2 = recursive[1];
|
|
cx = recursive[2];
|
|
cy = recursive[3];
|
|
}
|
|
var df = f2 - f1;
|
|
if (abs(df) > _120) {
|
|
var f2old = f2,
|
|
x2old = x2,
|
|
y2old = y2;
|
|
f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1);
|
|
x2 = cx + rx * math.cos(f2);
|
|
y2 = cy + ry * math.sin(f2);
|
|
res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [f2, f2old, cx, cy]);
|
|
}
|
|
df = f2 - f1;
|
|
var c1 = math.cos(f1),
|
|
s1 = math.sin(f1),
|
|
c2 = math.cos(f2),
|
|
s2 = math.sin(f2),
|
|
t = math.tan(df / 4),
|
|
hx = 4 / 3 * rx * t,
|
|
hy = 4 / 3 * ry * t,
|
|
m1 = [x1, y1],
|
|
m2 = [x1 + hx * s1, y1 - hy * c1],
|
|
m3 = [x2 + hx * s2, y2 - hy * c2],
|
|
m4 = [x2, y2];
|
|
m2[0] = 2 * m1[0] - m2[0];
|
|
m2[1] = 2 * m1[1] - m2[1];
|
|
if (recursive) {
|
|
return [m2, m3, m4][concat](res);
|
|
} else {
|
|
res = [m2, m3, m4][concat](res).join()[split](",");
|
|
var newres = [];
|
|
for (var i = 0, ii = res.length; i < ii; i++) {
|
|
newres[i] = i % 2 ? rotate(res[i - 1], res[i], rad).y : rotate(res[i], res[i + 1], rad).x;
|
|
}
|
|
return newres;
|
|
}
|
|
}
|
|
function cacher(f, scope, postprocessor) {
|
|
function newf() {
|
|
var arg = Array.prototype.slice.call(arguments, 0),
|
|
args = arg.join("\u2400"),
|
|
cache = newf.cache = newf.cache || {},
|
|
count = newf.count = newf.count || [];
|
|
if (cache[has](args)) {
|
|
repush(count, args);
|
|
return postprocessor ? postprocessor(cache[args]) : cache[args];
|
|
}
|
|
count.length >= 1e3 && delete cache[count.shift()];
|
|
count.push(args);
|
|
cache[args] = f[apply](scope, arg);
|
|
return postprocessor ? postprocessor(cache[args]) : cache[args];
|
|
}
|
|
return newf;
|
|
}
|
|
|
|
function repush(array, item) {
|
|
for (var i = 0, ii = array.length; i < ii; i++) if (array[i] === item) {
|
|
return array.push(array.splice(i, 1)[0]);
|
|
}
|
|
}
|
|
|
|
},{}]},{},[24])(24)
|
|
}); |