st-bundle
Version:
CLI for watching and bundling SpringType projects.
1,672 lines (1,422 loc) • 45.8 kB
JavaScript
if (FuseBox.isServer) {
module.exports = global.require("buffer");
} else {
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
/* eslint-disable no-proto */
("use strict");
var base64 = require("base64-js");
var ieee754 = require("ieee754");
exports.Buffer = Buffer;
exports.FuseShim = true;
exports.SlowBuffer = SlowBuffer;
exports.INSPECT_MAX_BYTES = 50;
var K_MAX_LENGTH = 0x7fffffff;
exports.kMaxLength = K_MAX_LENGTH;
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Print warning and recommend using `buffer` v4.x which has an Object
* implementation (most compatible, even IE6)
*
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
* Opera 11.6+, iOS 4.2+.
*
* We report that the browser does not support typed arrays if the are not subclassable
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
* for __proto__ and has a buggy typed array implementation.
*/
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport();
if (!Buffer.TYPED_ARRAY_SUPPORT) {
console.error(
"This browser lacks typed array (Uint8Array) support which is required by " + "`buffer` v5.x. Use `buffer` v4.x if you require old browser support."
);
}
function typedArraySupport() {
// Can typed array instances can be augmented?
try {
var arr = new Uint8Array(1);
arr.__proto__ = {
__proto__: Uint8Array.prototype,
foo: function() {
return 42;
}
};
return arr.foo() === 42;
} catch (e) {
return false;
}
}
function createBuffer(length) {
if (length > K_MAX_LENGTH) {
throw new RangeError("Invalid typed array length");
}
// Return an augmented `Uint8Array` instance
var buf = new Uint8Array(length);
buf.__proto__ = Buffer.prototype;
return buf;
}
/**
* The Buffer constructor returns instances of `Uint8Array` that have their
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
* returns a single octet.
*
* The `Uint8Array` prototype remains unmodified.
*/
function Buffer(arg, encodingOrOffset, length) {
// Common case.
if (typeof arg === "number") {
if (typeof encodingOrOffset === "string") {
throw new Error("If encoding is specified then the first argument must be a string");
}
return allocUnsafe(arg);
}
return from(arg, encodingOrOffset, length);
}
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== "undefined" && Symbol.species && Buffer[Symbol.species] === Buffer) {
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true,
enumerable: false,
writable: false
});
}
Buffer.poolSize = 8192; // not used by this implementation
function from(value, encodingOrOffset, length) {
if (typeof value === "number") {
throw new TypeError('"value" argument must not be a number');
}
if (typeof ArrayBuffer !== "undefined" && value instanceof ArrayBuffer) {
return fromArrayBuffer(value, encodingOrOffset, length);
}
if (typeof value === "string") {
return fromString(value, encodingOrOffset);
}
return fromObject(value);
}
/**
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
* if value is a number.
* Buffer.from(str[, encoding])
* Buffer.from(array)
* Buffer.from(buffer)
* Buffer.from(arrayBuffer[, byteOffset[, length]])
**/
Buffer.from = function(value, encodingOrOffset, length) {
return from(value, encodingOrOffset, length);
};
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype;
Buffer.__proto__ = Uint8Array;
function assertSize(size) {
if (typeof size !== "number") {
throw new TypeError('"size" argument must be a number');
} else if (size < 0) {
throw new RangeError('"size" argument must not be negative');
}
}
function alloc(size, fill, encoding) {
assertSize(size);
if (size <= 0) {
return createBuffer(size);
}
if (fill !== undefined) {
// Only pay attention to encoding if it's a string. This
// prevents accidentally sending in a number that would
// be interpretted as a start offset.
return typeof encoding === "string" ? createBuffer(size).fill(fill, encoding) : createBuffer(size).fill(fill);
}
return createBuffer(size);
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function(size, fill, encoding) {
return alloc(size, fill, encoding);
};
function allocUnsafe(size) {
assertSize(size);
return createBuffer(size < 0 ? 0 : checked(size) | 0);
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function(size) {
return allocUnsafe(size);
};
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function(size) {
return allocUnsafe(size);
};
function fromString(string, encoding) {
if (typeof encoding !== "string" || encoding === "") {
encoding = "utf8";
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('"encoding" must be a valid string encoding');
}
var length = byteLength(string, encoding) | 0;
var buf = createBuffer(length);
var actual = buf.write(string, encoding);
if (actual !== length) {
// Writing a hex string, for example, that contains invalid characters will
// cause everything after the first invalid character to be ignored. (e.g.
// 'abxxcd' will be treated as 'ab')
buf = buf.slice(0, actual);
}
return buf;
}
function fromArrayLike(array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0;
var buf = createBuffer(length);
for (var i = 0; i < length; i += 1) {
buf[i] = array[i] & 255;
}
return buf;
}
function fromArrayBuffer(array, byteOffset, length) {
array.byteLength; // this throws if `array` is not a valid ArrayBuffer
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError("'offset' is out of bounds");
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError("'length' is out of bounds");
}
var buf;
if (byteOffset === undefined && length === undefined) {
buf = new Uint8Array(array);
} else if (length === undefined) {
buf = new Uint8Array(array, byteOffset);
} else {
buf = new Uint8Array(array, byteOffset, length);
}
// Return an augmented `Uint8Array` instance
buf.__proto__ = Buffer.prototype;
return buf;
}
function fromObject(obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0;
var buf = createBuffer(len);
if (buf.length === 0) {
return buf;
}
obj.copy(buf, 0, 0, len);
return buf;
}
if (obj) {
if ((typeof ArrayBuffer !== "undefined" && obj.buffer instanceof ArrayBuffer) || "length" in obj) {
if (typeof obj.length !== "number" || isnan(obj.length)) {
return createBuffer(0);
}
return fromArrayLike(obj);
}
if (obj.type === "Buffer" && Array.isArray(obj.data)) {
return fromArrayLike(obj.data);
}
}
throw new TypeError("First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.");
}
function checked(length) {
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= K_MAX_LENGTH) {
throw new RangeError("Attempt to allocate Buffer larger than maximum " + "size: 0x" + K_MAX_LENGTH.toString(16) + " bytes");
}
return length | 0;
}
function SlowBuffer(length) {
if (+length != length) {
// eslint-disable-line eqeqeq
length = 0;
}
return Buffer.alloc(+length);
}
Buffer.isBuffer = function isBuffer(b) {
return !!(b != null && b._isBuffer);
};
Buffer.compare = function compare(a, b) {
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError("Arguments must be Buffers");
}
if (a === b) return 0;
var x = a.length;
var y = b.length;
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i];
y = b[i];
break;
}
}
if (x < y) return -1;
if (y < x) return 1;
return 0;
};
Buffer.isEncoding = function isEncoding(encoding) {
switch (String(encoding).toLowerCase()) {
case "hex":
case "utf8":
case "utf-8":
case "ascii":
case "latin1":
case "binary":
case "base64":
case "ucs2":
case "ucs-2":
case "utf16le":
case "utf-16le":
return true;
default:
return false;
}
};
Buffer.concat = function concat(list, length) {
if (!Array.isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers');
}
if (list.length === 0) {
return Buffer.alloc(0);
}
var i;
if (length === undefined) {
length = 0;
for (i = 0; i < list.length; ++i) {
length += list[i].length;
}
}
var buffer = Buffer.allocUnsafe(length);
var pos = 0;
for (i = 0; i < list.length; ++i) {
var buf = list[i];
if (!Buffer.isBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers');
}
buf.copy(buffer, pos);
pos += buf.length;
}
return buffer;
};
function byteLength(string, encoding) {
if (Buffer.isBuffer(string)) {
return string.length;
}
if (typeof ArrayBuffer !== "undefined" && typeof ArrayBuffer.isView === "function" && (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
return string.byteLength;
}
if (typeof string !== "string") {
string = "" + string;
}
var len = string.length;
if (len === 0) return 0;
// Use a for loop to avoid recursion
var loweredCase = false;
for (;;) {
switch (encoding) {
case "ascii":
case "latin1":
case "binary":
return len;
case "utf8":
case "utf-8":
case undefined:
return utf8ToBytes(string).length;
case "ucs2":
case "ucs-2":
case "utf16le":
case "utf-16le":
return len * 2;
case "hex":
return len >>> 1;
case "base64":
return base64ToBytes(string).length;
default:
if (loweredCase) return utf8ToBytes(string).length; // assume utf8
encoding = ("" + encoding).toLowerCase();
loweredCase = true;
}
}
}
Buffer.byteLength = byteLength;
function slowToString(encoding, start, end) {
var loweredCase = false;
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
// property of a typed array.
// This behaves neither like String nor Uint8Array in that we set start/end
// to their upper/lower bounds if the value passed is out of range.
// undefined is handled specially as per ECMA-262 6th Edition,
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
if (start === undefined || start < 0) {
start = 0;
}
// Return early if start > this.length. Done here to prevent potential uint32
// coercion fail below.
if (start > this.length) {
return "";
}
if (end === undefined || end > this.length) {
end = this.length;
}
if (end <= 0) {
return "";
}
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
end >>>= 0;
start >>>= 0;
if (end <= start) {
return "";
}
if (!encoding) encoding = "utf8";
while (true) {
switch (encoding) {
case "hex":
return hexSlice(this, start, end);
case "utf8":
case "utf-8":
return utf8Slice(this, start, end);
case "ascii":
return asciiSlice(this, start, end);
case "latin1":
case "binary":
return latin1Slice(this, start, end);
case "base64":
return base64Slice(this, start, end);
case "ucs2":
case "ucs-2":
case "utf16le":
case "utf-16le":
return utf16leSlice(this, start, end);
default:
if (loweredCase) throw new TypeError("Unknown encoding: " + encoding);
encoding = (encoding + "").toLowerCase();
loweredCase = true;
}
}
}
// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
// Buffer instances.
Buffer.prototype._isBuffer = true;
function swap(b, n, m) {
var i = b[n];
b[n] = b[m];
b[m] = i;
}
Buffer.prototype.swap16 = function swap16() {
var len = this.length;
if (len % 2 !== 0) {
throw new RangeError("Buffer size must be a multiple of 16-bits");
}
for (var i = 0; i < len; i += 2) {
swap(this, i, i + 1);
}
return this;
};
Buffer.prototype.swap32 = function swap32() {
var len = this.length;
if (len % 4 !== 0) {
throw new RangeError("Buffer size must be a multiple of 32-bits");
}
for (var i = 0; i < len; i += 4) {
swap(this, i, i + 3);
swap(this, i + 1, i + 2);
}
return this;
};
Buffer.prototype.swap64 = function swap64() {
var len = this.length;
if (len % 8 !== 0) {
throw new RangeError("Buffer size must be a multiple of 64-bits");
}
for (var i = 0; i < len; i += 8) {
swap(this, i, i + 7);
swap(this, i + 1, i + 6);
swap(this, i + 2, i + 5);
swap(this, i + 3, i + 4);
}
return this;
};
Buffer.prototype.toString = function toString() {
var length = this.length;
if (length === 0) return "";
if (arguments.length === 0) return utf8Slice(this, 0, length);
return slowToString.apply(this, arguments);
};
Buffer.prototype.equals = function equals(b) {
if (!Buffer.isBuffer(b)) throw new TypeError("Argument must be a Buffer");
if (this === b) return true;
return Buffer.compare(this, b) === 0;
};
Buffer.prototype.inspect = function inspect() {
var str = "";
var max = exports.INSPECT_MAX_BYTES;
if (this.length > 0) {
str = this.toString("hex", 0, max)
.match(/.{2}/g)
.join(" ");
if (this.length > max) str += " ... ";
}
return "<Buffer " + str + ">";
};
Buffer.prototype.compare = function compare(target, start, end, thisStart, thisEnd) {
if (!Buffer.isBuffer(target)) {
throw new TypeError("Argument must be a Buffer");
}
if (start === undefined) {
start = 0;
}
if (end === undefined) {
end = target ? target.length : 0;
}
if (thisStart === undefined) {
thisStart = 0;
}
if (thisEnd === undefined) {
thisEnd = this.length;
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError("out of range index");
}
if (thisStart >= thisEnd && start >= end) {
return 0;
}
if (thisStart >= thisEnd) {
return -1;
}
if (start >= end) {
return 1;
}
start >>>= 0;
end >>>= 0;
thisStart >>>= 0;
thisEnd >>>= 0;
if (this === target) return 0;
var x = thisEnd - thisStart;
var y = end - start;
var len = Math.min(x, y);
var thisCopy = this.slice(thisStart, thisEnd);
var targetCopy = target.slice(start, end);
for (var i = 0; i < len; ++i) {
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i];
y = targetCopy[i];
break;
}
}
if (x < y) return -1;
if (y < x) return 1;
return 0;
};
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf(buffer, val, byteOffset, encoding, dir) {
// Empty buffer means no match
if (buffer.length === 0) return -1;
// Normalize byteOffset
if (typeof byteOffset === "string") {
encoding = byteOffset;
byteOffset = 0;
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff;
} else if (byteOffset < -0x80000000) {
byteOffset = -0x80000000;
}
byteOffset = +byteOffset; // Coerce to Number.
if (isNaN(byteOffset)) {
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
byteOffset = dir ? 0 : buffer.length - 1;
}
// Normalize byteOffset: negative offsets start from the end of the buffer
if (byteOffset < 0) byteOffset = buffer.length + byteOffset;
if (byteOffset >= buffer.length) {
if (dir) return -1;
else byteOffset = buffer.length - 1;
} else if (byteOffset < 0) {
if (dir) byteOffset = 0;
else return -1;
}
// Normalize val
if (typeof val === "string") {
val = Buffer.from(val, encoding);
}
// Finally, search either indexOf (if dir is true) or lastIndexOf
if (Buffer.isBuffer(val)) {
// Special case: looking for empty string/buffer always fails
if (val.length === 0) {
return -1;
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir);
} else if (typeof val === "number") {
val = val & 0xff; // Search for a byte value [0-255]
if (typeof Uint8Array.prototype.indexOf === "function") {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset);
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset);
}
}
return arrayIndexOf(buffer, [val], byteOffset, encoding, dir);
}
throw new TypeError("val must be string, number or Buffer");
}
function arrayIndexOf(arr, val, byteOffset, encoding, dir) {
var indexSize = 1;
var arrLength = arr.length;
var valLength = val.length;
if (encoding !== undefined) {
encoding = String(encoding).toLowerCase();
if (encoding === "ucs2" || encoding === "ucs-2" || encoding === "utf16le" || encoding === "utf-16le") {
if (arr.length < 2 || val.length < 2) {
return -1;
}
indexSize = 2;
arrLength /= 2;
valLength /= 2;
byteOffset /= 2;
}
}
function read(buf, i) {
if (indexSize === 1) {
return buf[i];
} else {
return buf.readUInt16BE(i * indexSize);
}
}
var i;
if (dir) {
var foundIndex = -1;
for (i = byteOffset; i < arrLength; i++) {
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i;
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize;
} else {
if (foundIndex !== -1) i -= i - foundIndex;
foundIndex = -1;
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength;
for (i = byteOffset; i >= 0; i--) {
var found = true;
for (var j = 0; j < valLength; j++) {
if (read(arr, i + j) !== read(val, j)) {
found = false;
break;
}
}
if (found) return i;
}
}
return -1;
}
Buffer.prototype.includes = function includes(val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1;
};
Buffer.prototype.indexOf = function indexOf(val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true);
};
Buffer.prototype.lastIndexOf = function lastIndexOf(val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false);
};
function hexWrite(buf, string, offset, length) {
offset = Number(offset) || 0;
var remaining = buf.length - offset;
if (!length) {
length = remaining;
} else {
length = Number(length);
if (length > remaining) {
length = remaining;
}
}
// must be an even number of digits
var strLen = string.length;
if (strLen % 2 !== 0) throw new TypeError("Invalid hex string");
if (length > strLen / 2) {
length = strLen / 2;
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16);
if (isNaN(parsed)) return i;
buf[offset + i] = parsed;
}
return i;
}
function utf8Write(buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length);
}
function asciiWrite(buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length);
}
function latin1Write(buf, string, offset, length) {
return asciiWrite(buf, string, offset, length);
}
function base64Write(buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length);
}
function ucs2Write(buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length);
}
Buffer.prototype.write = function write(string, offset, length, encoding) {
// Buffer#write(string)
if (offset === undefined) {
encoding = "utf8";
length = this.length;
offset = 0;
// Buffer#write(string, encoding)
} else if (length === undefined && typeof offset === "string") {
encoding = offset;
length = this.length;
offset = 0;
// Buffer#write(string, offset[, length][, encoding])
} else if (isFinite(offset)) {
offset = offset >>> 0;
if (isFinite(length)) {
length = length >>> 0;
if (encoding === undefined) encoding = "utf8";
} else {
encoding = length;
length = undefined;
}
// legacy write(string, encoding, offset, length) - remove in v0.13
} else {
throw new Error("Buffer.write(string, encoding, offset[, length]) is no longer supported");
}
var remaining = this.length - offset;
if (length === undefined || length > remaining) length = remaining;
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
throw new RangeError("Attempt to write outside buffer bounds");
}
if (!encoding) encoding = "utf8";
var loweredCase = false;
for (;;) {
switch (encoding) {
case "hex":
return hexWrite(this, string, offset, length);
case "utf8":
case "utf-8":
return utf8Write(this, string, offset, length);
case "ascii":
return asciiWrite(this, string, offset, length);
case "latin1":
case "binary":
return latin1Write(this, string, offset, length);
case "base64":
// Warning: maxLength not taken into account in base64Write
return base64Write(this, string, offset, length);
case "ucs2":
case "ucs-2":
case "utf16le":
case "utf-16le":
return ucs2Write(this, string, offset, length);
default:
if (loweredCase) throw new TypeError("Unknown encoding: " + encoding);
encoding = ("" + encoding).toLowerCase();
loweredCase = true;
}
}
};
Buffer.prototype.toJSON = function toJSON() {
return {
type: "Buffer",
data: Array.prototype.slice.call(this._arr || this, 0)
};
};
function base64Slice(buf, start, end) {
if (start === 0 && end === buf.length) {
return base64.fromByteArray(buf);
} else {
return base64.fromByteArray(buf.slice(start, end));
}
}
function utf8Slice(buf, start, end) {
end = Math.min(buf.length, end);
var res = [];
var i = start;
while (i < end) {
var firstByte = buf[i];
var codePoint = null;
var bytesPerSequence = firstByte > 0xef ? 4 : firstByte > 0xdf ? 3 : firstByte > 0xbf ? 2 : 1;
if (i + bytesPerSequence <= end) {
var secondByte, thirdByte, fourthByte, tempCodePoint;
switch (bytesPerSequence) {
case 1:
if (firstByte < 0x80) {
codePoint = firstByte;
}
break;
case 2:
secondByte = buf[i + 1];
if ((secondByte & 0xc0) === 0x80) {
tempCodePoint = ((firstByte & 0x1f) << 0x6) | (secondByte & 0x3f);
if (tempCodePoint > 0x7f) {
codePoint = tempCodePoint;
}
}
break;
case 3:
secondByte = buf[i + 1];
thirdByte = buf[i + 2];
if ((secondByte & 0xc0) === 0x80 && (thirdByte & 0xc0) === 0x80) {
tempCodePoint = ((firstByte & 0xf) << 0xc) | ((secondByte & 0x3f) << 0x6) | (thirdByte & 0x3f);
if (tempCodePoint > 0x7ff && (tempCodePoint < 0xd800 || tempCodePoint > 0xdfff)) {
codePoint = tempCodePoint;
}
}
break;
case 4:
secondByte = buf[i + 1];
thirdByte = buf[i + 2];
fourthByte = buf[i + 3];
if ((secondByte & 0xc0) === 0x80 && (thirdByte & 0xc0) === 0x80 && (fourthByte & 0xc0) === 0x80) {
tempCodePoint = ((firstByte & 0xf) << 0x12) | ((secondByte & 0x3f) << 0xc) | ((thirdByte & 0x3f) << 0x6) | (fourthByte & 0x3f);
if (tempCodePoint > 0xffff && tempCodePoint < 0x110000) {
codePoint = tempCodePoint;
}
}
}
}
if (codePoint === null) {
// we did not generate a valid codePoint so insert a
// replacement char (U+FFFD) and advance only 1 byte
codePoint = 0xfffd;
bytesPerSequence = 1;
} else if (codePoint > 0xffff) {
// encode to utf16 (surrogate pair dance)
codePoint -= 0x10000;
res.push(((codePoint >>> 10) & 0x3ff) | 0xd800);
codePoint = 0xdc00 | (codePoint & 0x3ff);
}
res.push(codePoint);
i += bytesPerSequence;
}
return decodeCodePointsArray(res);
}
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000;
function decodeCodePointsArray(codePoints) {
var len = codePoints.length;
if (len <= MAX_ARGUMENTS_LENGTH) {
return String.fromCharCode.apply(String, codePoints); // avoid extra slice()
}
// Decode in chunks to avoid "call stack size exceeded".
var res = "";
var i = 0;
while (i < len) {
res += String.fromCharCode.apply(String, codePoints.slice(i, (i += MAX_ARGUMENTS_LENGTH)));
}
return res;
}
function asciiSlice(buf, start, end) {
var ret = "";
end = Math.min(buf.length, end);
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i] & 0x7f);
}
return ret;
}
function latin1Slice(buf, start, end) {
var ret = "";
end = Math.min(buf.length, end);
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i]);
}
return ret;
}
function hexSlice(buf, start, end) {
var len = buf.length;
if (!start || start < 0) start = 0;
if (!end || end < 0 || end > len) end = len;
var out = "";
for (var i = start; i < end; ++i) {
out += toHex(buf[i]);
}
return out;
}
function utf16leSlice(buf, start, end) {
var bytes = buf.slice(start, end);
var res = "";
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256);
}
return res;
}
Buffer.prototype.slice = function slice(start, end) {
var len = this.length;
start = ~~start;
end = end === undefined ? len : ~~end;
if (start < 0) {
start += len;
if (start < 0) start = 0;
} else if (start > len) {
start = len;
}
if (end < 0) {
end += len;
if (end < 0) end = 0;
} else if (end > len) {
end = len;
}
if (end < start) end = start;
var newBuf = this.subarray(start, end);
// Return an augmented `Uint8Array` instance
newBuf.__proto__ = Buffer.prototype;
return newBuf;
};
/*
* Need to make sure that buffer isn't trying to write out of bounds.
*/
function checkOffset(offset, ext, length) {
if (offset % 1 !== 0 || offset < 0) throw new RangeError("offset is not uint");
if (offset + ext > length) throw new RangeError("Trying to access beyond buffer length");
}
Buffer.prototype.readUIntLE = function readUIntLE(offset, byteLength, noAssert) {
offset = offset >>> 0;
byteLength = byteLength >>> 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var val = this[offset];
var mul = 1;
var i = 0;
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul;
}
return val;
};
Buffer.prototype.readUIntBE = function readUIntBE(offset, byteLength, noAssert) {
offset = offset >>> 0;
byteLength = byteLength >>> 0;
if (!noAssert) {
checkOffset(offset, byteLength, this.length);
}
var val = this[offset + --byteLength];
var mul = 1;
while (byteLength > 0 && (mul *= 0x100)) {
val += this[offset + --byteLength] * mul;
}
return val;
};
Buffer.prototype.readUInt8 = function readUInt8(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 1, this.length);
return this[offset];
};
Buffer.prototype.readUInt16LE = function readUInt16LE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 2, this.length);
return this[offset] | (this[offset + 1] << 8);
};
Buffer.prototype.readUInt16BE = function readUInt16BE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 2, this.length);
return (this[offset] << 8) | this[offset + 1];
};
Buffer.prototype.readUInt32LE = function readUInt32LE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 4, this.length);
return (this[offset] | (this[offset + 1] << 8) | (this[offset + 2] << 16)) + this[offset + 3] * 0x1000000;
};
Buffer.prototype.readUInt32BE = function readUInt32BE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 4, this.length);
return this[offset] * 0x1000000 + ((this[offset + 1] << 16) | (this[offset + 2] << 8) | this[offset + 3]);
};
Buffer.prototype.readIntLE = function readIntLE(offset, byteLength, noAssert) {
offset = offset >>> 0;
byteLength = byteLength >>> 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var val = this[offset];
var mul = 1;
var i = 0;
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul;
}
mul *= 0x80;
if (val >= mul) val -= Math.pow(2, 8 * byteLength);
return val;
};
Buffer.prototype.readIntBE = function readIntBE(offset, byteLength, noAssert) {
offset = offset >>> 0;
byteLength = byteLength >>> 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var i = byteLength;
var mul = 1;
var val = this[offset + --i];
while (i > 0 && (mul *= 0x100)) {
val += this[offset + --i] * mul;
}
mul *= 0x80;
if (val >= mul) val -= Math.pow(2, 8 * byteLength);
return val;
};
Buffer.prototype.readInt8 = function readInt8(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 1, this.length);
if (!(this[offset] & 0x80)) return this[offset];
return (0xff - this[offset] + 1) * -1;
};
Buffer.prototype.readInt16LE = function readInt16LE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 2, this.length);
var val = this[offset] | (this[offset + 1] << 8);
return val & 0x8000 ? val | 0xffff0000 : val;
};
Buffer.prototype.readInt16BE = function readInt16BE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 2, this.length);
var val = this[offset + 1] | (this[offset] << 8);
return val & 0x8000 ? val | 0xffff0000 : val;
};
Buffer.prototype.readInt32LE = function readInt32LE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 4, this.length);
return this[offset] | (this[offset + 1] << 8) | (this[offset + 2] << 16) | (this[offset + 3] << 24);
};
Buffer.prototype.readInt32BE = function readInt32BE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 4, this.length);
return (this[offset] << 24) | (this[offset + 1] << 16) | (this[offset + 2] << 8) | this[offset + 3];
};
Buffer.prototype.readFloatLE = function readFloatLE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 4, this.length);
return ieee754.read(this, offset, true, 23, 4);
};
Buffer.prototype.readFloatBE = function readFloatBE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 4, this.length);
return ieee754.read(this, offset, false, 23, 4);
};
Buffer.prototype.readDoubleLE = function readDoubleLE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 8, this.length);
return ieee754.read(this, offset, true, 52, 8);
};
Buffer.prototype.readDoubleBE = function readDoubleBE(offset, noAssert) {
offset = offset >>> 0;
if (!noAssert) checkOffset(offset, 8, this.length);
return ieee754.read(this, offset, false, 52, 8);
};
function checkInt(buf, value, offset, ext, max, min) {
if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance');
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds');
if (offset + ext > buf.length) throw new RangeError("Index out of range");
}
Buffer.prototype.writeUIntLE = function writeUIntLE(value, offset, byteLength, noAssert) {
value = +value;
offset = offset >>> 0;
byteLength = byteLength >>> 0;
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1;
checkInt(this, value, offset, byteLength, maxBytes, 0);
}
var mul = 1;
var i = 0;
this[offset] = value & 0xff;
while (++i < byteLength && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xff;
}
return offset + byteLength;
};
Buffer.prototype.writeUIntBE = function writeUIntBE(value, offset, byteLength, noAssert) {
value = +value;
offset = offset >>> 0;
byteLength = byteLength >>> 0;
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1;
checkInt(this, value, offset, byteLength, maxBytes, 0);
}
var i = byteLength - 1;
var mul = 1;
this[offset + i] = value & 0xff;
while (--i >= 0 && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xff;
}
return offset + byteLength;
};
Buffer.prototype.writeUInt8 = function writeUInt8(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0);
this[offset] = value & 0xff;
return offset + 1;
};
Buffer.prototype.writeUInt16LE = function writeUInt16LE(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
this[offset] = value & 0xff;
this[offset + 1] = value >>> 8;
return offset + 2;
};
Buffer.prototype.writeUInt16BE = function writeUInt16BE(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
this[offset] = value >>> 8;
this[offset + 1] = value & 0xff;
return offset + 2;
};
Buffer.prototype.writeUInt32LE = function writeUInt32LE(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
this[offset + 3] = value >>> 24;
this[offset + 2] = value >>> 16;
this[offset + 1] = value >>> 8;
this[offset] = value & 0xff;
return offset + 4;
};
Buffer.prototype.writeUInt32BE = function writeUInt32BE(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
this[offset] = value >>> 24;
this[offset + 1] = value >>> 16;
this[offset + 2] = value >>> 8;
this[offset + 3] = value & 0xff;
return offset + 4;
};
Buffer.prototype.writeIntLE = function writeIntLE(value, offset, byteLength, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) {
var limit = Math.pow(2, 8 * byteLength - 1);
checkInt(this, value, offset, byteLength, limit - 1, -limit);
}
var i = 0;
var mul = 1;
var sub = 0;
this[offset] = value & 0xff;
while (++i < byteLength && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
sub = 1;
}
this[offset + i] = (((value / mul) >> 0) - sub) & 0xff;
}
return offset + byteLength;
};
Buffer.prototype.writeIntBE = function writeIntBE(value, offset, byteLength, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) {
var limit = Math.pow(2, 8 * byteLength - 1);
checkInt(this, value, offset, byteLength, limit - 1, -limit);
}
var i = byteLength - 1;
var mul = 1;
var sub = 0;
this[offset + i] = value & 0xff;
while (--i >= 0 && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
sub = 1;
}
this[offset + i] = (((value / mul) >> 0) - sub) & 0xff;
}
return offset + byteLength;
};
Buffer.prototype.writeInt8 = function writeInt8(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80);
if (value < 0) value = 0xff + value + 1;
this[offset] = value & 0xff;
return offset + 1;
};
Buffer.prototype.writeInt16LE = function writeInt16LE(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
this[offset] = value & 0xff;
this[offset + 1] = value >>> 8;
return offset + 2;
};
Buffer.prototype.writeInt16BE = function writeInt16BE(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
this[offset] = value >>> 8;
this[offset + 1] = value & 0xff;
return offset + 2;
};
Buffer.prototype.writeInt32LE = function writeInt32LE(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
this[offset] = value & 0xff;
this[offset + 1] = value >>> 8;
this[offset + 2] = value >>> 16;
this[offset + 3] = value >>> 24;
return offset + 4;
};
Buffer.prototype.writeInt32BE = function writeInt32BE(value, offset, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
if (value < 0) value = 0xffffffff + value + 1;
this[offset] = value >>> 24;
this[offset + 1] = value >>> 16;
this[offset + 2] = value >>> 8;
this[offset + 3] = value & 0xff;
return offset + 4;
};
function checkIEEE754(buf, value, offset, ext, max, min) {
if (offset + ext > buf.length) throw new RangeError("Index out of range");
if (offset < 0) throw new RangeError("Index out of range");
}
function writeFloat(buf, value, offset, littleEndian, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) {
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e38, -3.4028234663852886e38);
}
ieee754.write(buf, value, offset, littleEndian, 23, 4);
return offset + 4;
}
Buffer.prototype.writeFloatLE = function writeFloatLE(value, offset, noAssert) {
return writeFloat(this, value, offset, true, noAssert);
};
Buffer.prototype.writeFloatBE = function writeFloatBE(value, offset, noAssert) {
return writeFloat(this, value, offset, false, noAssert);
};
function writeDouble(buf, value, offset, littleEndian, noAssert) {
value = +value;
offset = offset >>> 0;
if (!noAssert) {
checkIEEE754(buf, value, offset, 8, 1.7976931348623157e308, -1.7976931348623157e308);
}
ieee754.write(buf, value, offset, littleEndian, 52, 8);
return offset + 8;
}
Buffer.prototype.writeDoubleLE = function writeDoubleLE(value, offset, noAssert) {
return writeDouble(this, value, offset, true, noAssert);
};
Buffer.prototype.writeDoubleBE = function writeDoubleBE(value, offset, noAssert) {
return writeDouble(this, value, offset, false, noAssert);
};
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy(target, targetStart, start, end) {
if (!start) start = 0;
if (!end && end !== 0) end = this.length;
if (targetStart >= target.length) targetStart = target.length;
if (!targetStart) targetStart = 0;
if (end > 0 && end < start) end = start;
// Copy 0 bytes; we're done
if (end === start) return 0;
if (target.length === 0 || this.length === 0) return 0;
// Fatal error conditions
if (targetStart < 0) {
throw new RangeError("targetStart out of bounds");
}
if (start < 0 || start >= this.length) throw new RangeError("sourceStart out of bounds");
if (end < 0) throw new RangeError("sourceEnd out of bounds");
// Are we oob?
if (end > this.length) end = this.length;
if (target.length - targetStart < end - start) {
end = target.length - targetStart + start;
}
var len = end - start;
var i;
if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start];
}
} else if (len < 1000) {
// ascending copy from start
for (i = 0; i < len; ++i) {
target[i + targetStart] = this[i + start];
}
} else {
Uint8Array.prototype.set.call(target, this.subarray(start, start + len), targetStart);
}
return len;
};
// Usage:
// buffer.fill(number[, offset[, end]])
// buffer.fill(buffer[, offset[, end]])
// buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill(val, start, end, encoding) {
// Handle string cases:
if (typeof val === "string") {
if (typeof start === "string") {
encoding = start;
start = 0;
end = this.length;
} else if (typeof end === "string") {
encoding = end;
end = this.length;
}
if (val.length === 1) {
var code = val.charCodeAt(0);
if (code < 256) {
val = code;
}
}
if (encoding !== undefined && typeof encoding !== "string") {
throw new TypeError("encoding must be a string");
}
if (typeof encoding === "string" && !Buffer.isEncoding(encoding)) {
throw new TypeError("Unknown encoding: " + encoding);
}
} else if (typeof val === "number") {
val = val & 255;
}
// Invalid ranges are not set to a default, so can range check early.
if (start < 0 || this.length < start || this.length < end) {
throw new RangeError("Out of range index");
}
if (end <= start) {
return this;
}
start = start >>> 0;
end = end === undefined ? this.length : end >>> 0;
if (!val) val = 0;
var i;
if (typeof val === "number") {
for (i = start; i < end; ++i) {
this[i] = val;
}
} else {
var bytes = Buffer.isBuffer(val) ? val : new Buffer(val, encoding);
var len = bytes.length;
for (i = 0; i < end - start; ++i) {
this[i + start] = bytes[i % len];
}
}
return this;
};
// HELPER FUNCTIONS
// ================
var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g;
function base64clean(str) {
// Node strips out invalid characters like \n and \t from the string, base64-js does not
str = 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;
}
function isnan(val) {
return val !== val; // eslint-disable-line no-self-compare
}
}