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msgpack backup
Detta skript bör inte installeras direkt. Det är ett bibliotek för andra skript att inkludera med meta-direktivet // @require https://update.greasyfork.org/scripts/423602/1005014/msgpack.js
// ==UserScript==
// @name msgpack
// @description msgpack backup
// @author msgpack authors
// @license MIT
// ==/UserScript==
(function() {
'use strict';
function serialize(data) {
const pow32 = 0x100000000;
let floatBuffer, floatView;
let array = new Uint8Array(128);
let length = 0;
append(data);
return array.subarray(0, length);
function append(data) {
switch (typeof data) {
case "undefined":
appendNull(data);
break;
case "boolean":
appendBoolean(data);
break;
case "number":
appendNumber(data);
break;
case "string":
appendString(data);
break;
case "object":
if (data === null) {
appendNull(data);
} else if (data instanceof Date) {
appendDate(data);
} else if (Array.isArray(data)) {
appendArray(data);
} else if (data instanceof Uint8Array || data instanceof Uint8ClampedArray) {
appendBinArray(data);
} else if (data instanceof Int8Array || data instanceof Int16Array || data instanceof Uint16Array ||
data instanceof Int32Array || data instanceof Uint32Array ||
data instanceof Float32Array || data instanceof Float64Array) {
appendArray(data);
} else {
appendObject(data);
}
break;
}
}
function appendNull(data) {
appendByte(0xc0);
}
function appendBoolean(data) {
appendByte(data ? 0xc3 : 0xc2);
}
function appendNumber(data) {
if (isFinite(data) && Math.floor(data) === data) {
if (data >= 0 && data <= 0x7f) {
appendByte(data);
} else if (data < 0 && data >= -0x20) {
appendByte(data);
} else if (data > 0 && data <= 0xff) { // uint8
appendBytes([0xcc, data]);
} else if (data >= -0x80 && data <= 0x7f) { // int8
appendBytes([0xd0, data]);
} else if (data > 0 && data <= 0xffff) { // uint16
appendBytes([0xcd, data >>> 8, data]);
} else if (data >= -0x8000 && data <= 0x7fff) { // int16
appendBytes([0xd1, data >>> 8, data]);
} else if (data > 0 && data <= 0xffffffff) { // uint32
appendBytes([0xce, data >>> 24, data >>> 16, data >>> 8, data]);
} else if (data >= -0x80000000 && data <= 0x7fffffff) { // int32
appendBytes([0xd2, data >>> 24, data >>> 16, data >>> 8, data]);
} else if (data > 0 && data <= 0xffffffffffffffff) { // uint64
let hi = data / pow32;
let lo = data % pow32;
appendBytes([0xd3, hi >>> 24, hi >>> 16, hi >>> 8, hi, lo >>> 24, lo >>> 16, lo >>> 8, lo]);
} else if (data >= -0x8000000000000000 && data <= 0x7fffffffffffffff) { // int64
appendByte(0xd3);
appendInt64(data);
} else if (data < 0) { // below int64
appendBytes([0xd3, 0x80, 0, 0, 0, 0, 0, 0, 0]);
} else { // above uint64
appendBytes([0xcf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff]);
}
} else {
if (!floatView) {
floatBuffer = new ArrayBuffer(8);
floatView = new DataView(floatBuffer);
}
floatView.setFloat64(0, data);
appendByte(0xcb);
appendBytes(new Uint8Array(floatBuffer));
}
}
function appendString(data) {
let bytes = encodeUtf8(data);
let length = bytes.length;
if (length <= 0x1f) {
appendByte(0xa0 + length);
} else if (length <= 0xff) {
appendBytes([0xd9, length]);
} else if (length <= 0xffff) {
appendBytes([0xda, length >>> 8, length]);
} else {
appendBytes([0xdb, length >>> 24, length >>> 16, length >>> 8, length]);
}
appendBytes(bytes);
}
function appendArray(data) {
let length = data.length;
if (length <= 0xf) {
appendByte(0x90 + length);
} else if (length <= 0xffff) {
appendBytes([0xdc, length >>> 8, length]);
} else {
appendBytes([0xdd, length >>> 24, length >>> 16, length >>> 8, length]);
}
for (let index = 0; index < length; index++) {
append(data[index]);
}
}
function appendBinArray(data) {
let length = data.length;
if (length <= 0xf) {
appendBytes([0xc4, length]);
} else if (length <= 0xffff) {
appendBytes([0xc5, length >>> 8, length]);
} else {
appendBytes([0xc6, length >>> 24, length >>> 16, length >>> 8, length]);
}
appendBytes(data);
}
function appendObject(data) {
let length = 0;
for (let key in data) length++;
if (length <= 0xf) {
appendByte(0x80 + length);
} else if (length <= 0xffff) {
appendBytes([0xde, length >>> 8, length]);
} else {
appendBytes([0xdf, length >>> 24, length >>> 16, length >>> 8, length]);
}
for (let key in data) {
append(key);
append(data[key]);
}
}
function appendDate(data) {
let sec = data.getTime() / 1000;
if (data.getMilliseconds() === 0 && sec >= 0 && sec < 0x100000000) { // 32 bit seconds
appendBytes([0xd6, 0xff, sec >>> 24, sec >>> 16, sec >>> 8, sec]);
}
else if (sec >= 0 && sec < 0x400000000) { // 30 bit nanoseconds, 34 bit seconds
let ns = data.getMilliseconds() * 1000000;
appendBytes([0xd7, 0xff, ns >>> 22, ns >>> 14, ns >>> 6, ((ns << 2) >>> 0) | (sec / pow32), sec >>> 24, sec >>> 16, sec >>> 8, sec]);
}
else { // 32 bit nanoseconds, 64 bit seconds, negative values allowed
let ns = data.getMilliseconds() * 1000000;
appendBytes([0xc7, 12, 0xff, ns >>> 24, ns >>> 16, ns >>> 8, ns]);
appendInt64(sec);
}
}
function appendByte(byte) {
if (array.length < length + 1) {
let newLength = array.length * 2;
while (newLength < length + 1)
newLength *= 2;
let newArray = new Uint8Array(newLength);
newArray.set(array);
array = newArray;
}
array[length] = byte;
length++;
}
function appendBytes(bytes) {
if (array.length < length + bytes.length) {
let newLength = array.length * 2;
while (newLength < length + bytes.length)
newLength *= 2;
let newArray = new Uint8Array(newLength);
newArray.set(array);
array = newArray;
}
array.set(bytes, length);
length += bytes.length;
}
function appendInt64(value) {
let hi, lo;
if (value >= 0) {
hi = value / pow32;
lo = value % pow32;
}
else {
value++;
hi = Math.abs(value) / pow32;
lo = Math.abs(value) % pow32;
hi = ~hi;
lo = ~lo;
}
appendBytes([hi >>> 24, hi >>> 16, hi >>> 8, hi, lo >>> 24, lo >>> 16, lo >>> 8, lo]);
}
}
function deserialize(array) {
const pow32 = 0x100000000; // 2^32
let pos = 0;
if (array instanceof ArrayBuffer) {
array = new Uint8Array(array);
}
if (typeof array !== "object" || typeof array.length === "undefined") {
throw new Error("Invalid argument type: Expected a byte array (Array or Uint8Array) to deserialize.");
}
if (!array.length) {
throw new Error("Invalid argument: The byte array to deserialize is empty.");
}
if (!(array instanceof Uint8Array)) {
array = new Uint8Array(array);
}
let data = read();
if (pos < array.length) {
}
return data;
function read() {
const byte = array[pos++];
if (byte >= 0x00 && byte <= 0x7f) return byte; // positive fixint
if (byte >= 0x80 && byte <= 0x8f) return readMap(byte - 0x80); // fixmap
if (byte >= 0x90 && byte <= 0x9f) return readArray(byte - 0x90); // fixarray
if (byte >= 0xa0 && byte <= 0xbf) return readStr(byte - 0xa0); // fixstr
if (byte === 0xc0) return null; // nil
if (byte === 0xc1) throw new Error("Invalid byte code 0xc1 found."); // never used
if (byte === 0xc2) return false // false
if (byte === 0xc3) return true; // true
if (byte === 0xc4) return readBin(-1, 1); // bin 8
if (byte === 0xc5) return readBin(-1, 2); // bin 16
if (byte === 0xc6) return readBin(-1, 4); // bin 32
if (byte === 0xc7) return readExt(-1, 1); // ext 8
if (byte === 0xc8) return readExt(-1, 2); // ext 16
if (byte === 0xc9) return readExt(-1, 4) // ext 32
if (byte === 0xca) return readFloat(4); // float 32
if (byte === 0xcb) return readFloat(8); // float 64
if (byte === 0xcc) return readUInt(1); // uint 8
if (byte === 0xcd) return readUInt(2); // uint 16
if (byte === 0xce) return readUInt(4); // uint 32
if (byte === 0xcf) return readUInt(8) // uint 64
if (byte === 0xd0) return readInt(1); // int 8
if (byte === 0xd1) return readInt(2); // int 16
if (byte === 0xd2) return readInt(4); // int 32
if (byte === 0xd3) return readInt(8); // int 64
if (byte === 0xd4) return readExt(1); // fixext 1
if (byte === 0xd5) return readExt(2); // fixext 2
if (byte === 0xd6) return readExt(4); // fixext 4
if (byte === 0xd7) return readExt(8); // fixext 8
if (byte === 0xd8) return readExt(16); // fixext 16
if (byte === 0xd9) return readStr(-1, 1); // str 8
if (byte === 0xda) return readStr(-1, 2); // str 16
if (byte === 0xdb) return readStr(-1, 4); // str 32
if (byte === 0xdc) return readArray(-1, 2); // array 16
if (byte === 0xdd) return readArray(-1, 4); // array 32
if (byte === 0xde) return readMap(-1, 2); // map 16
if (byte === 0xdf) return readMap(-1, 4); // map 32
if (byte >= 0xe0 && byte <= 0xff) return byte - 256; // negative fixint
console.debug("msgpack array:", array);
throw new Error("Invalid byte value '" + byte + "' at index " + (pos - 1) + " in the MessagePack binary data (length " + array.length + "): Expecting a range of 0 to 255. This is not a byte array.");
}
function readInt(size) {
let value = 0;
let first = true;
while (size-- > 0) {
if (first) {
let byte = array[pos++];
value += byte & 0x7f;
if (byte & 0x80) {
value -= 0x80;
}
first = false;
}
else {
value *= 256;
value += array[pos++];
}
}
return value;
}
function readUInt(size) {
let value = 0;
while (size-- > 0) {
value *= 256;
value += array[pos++];
}
return value;
}
function readFloat(size) {
let view = new DataView(array.buffer, pos, size);
pos += size;
if (size === 4) {
return view.getFloat32(0, false);
}
if (size === 8) {
return view.getFloat64(0, false);
}
}
function readBin(size, lengthSize) {
if (size < 0) size = readUInt(lengthSize);
let data = array.subarray(pos, pos + size);
pos += size;
return data;
}
function readMap(size, lengthSize) {
if (size < 0) size = readUInt(lengthSize);
let data = {};
while (size-- > 0) {
let key = read();
data[key] = read();
}
return data;
}
function readArray(size, lengthSize) {
if (size < 0) size = readUInt(lengthSize);
let data = [];
while (size-- > 0) {
data.push(read());
}
return data;
}
function readStr(size, lengthSize) {
if (size < 0) size = readUInt(lengthSize);
let start = pos;
pos += size;
return decodeUtf8(array, start, size);
}
function readExt(size, lengthSize) {
if (size < 0) size = readUInt(lengthSize);
let type = readUInt(1);
let data = readBin(size);
switch (type) {
case 255:
return readExtDate(data);
}
return { type: type, data: data };
}
function readExtDate(data) {
if (data.length === 4) {
let sec = ((data[0] << 24) >>> 0) +
((data[1] << 16) >>> 0) +
((data[2] << 8) >>> 0) +
data[3];
return new Date(sec * 1000);
}
if (data.length === 8) {
let ns = ((data[0] << 22) >>> 0) +
((data[1] << 14) >>> 0) +
((data[2] << 6) >>> 0) +
(data[3] >>> 2);
let sec = ((data[3] & 0x3) * pow32) +
((data[4] << 24) >>> 0) +
((data[5] << 16) >>> 0) +
((data[6] << 8) >>> 0) +
data[7];
return new Date(sec * 1000 + ns / 1000000);
}
if (data.length === 12) {
let ns = ((data[0] << 24) >>> 0) +
((data[1] << 16) >>> 0) +
((data[2] << 8) >>> 0) +
data[3];
pos -= 8;
let sec = readInt(8);
return new Date(sec * 1000 + ns / 1000000);
}
throw new Error("Invalid data length for a date value.");
}
}
function encodeUtf8(str) {
let ascii = true, length = str.length;
for (let x = 0; x < length; x++) {
if (str.charCodeAt(x) > 127) {
ascii = false;
break;
}
}
let i = 0, bytes = new Uint8Array(str.length * (ascii ? 1 : 4));
for (let ci = 0; ci !== length; ci++) {
let c = str.charCodeAt(ci);
if (c < 128) {
bytes[i++] = c;
continue;
}
if (c < 2048) {
bytes[i++] = c >> 6 | 192;
}
else {
if (c > 0xd7ff && c < 0xdc00) {
if (++ci >= length)
throw new Error("UTF-8 encode: incomplete surrogate pair");
let c2 = str.charCodeAt(ci);
if (c2 < 0xdc00 || c2 > 0xdfff)
throw new Error("UTF-8 encode: second surrogate character 0x" + c2.toString(16) + " at index " + ci + " out of range");
c = 0x10000 + ((c & 0x03ff) << 10) + (c2 & 0x03ff);
bytes[i++] = c >> 18 | 240;
bytes[i++] = c >> 12 & 63 | 128;
}
else bytes[i++] = c >> 12 | 224;
bytes[i++] = c >> 6 & 63 | 128;
}
bytes[i++] = c & 63 | 128;
}
return ascii ? bytes : bytes.subarray(0, i);
}
function decodeUtf8(bytes, start, length) {
let i = start, str = "";
length += start;
while (i < length) {
let c = bytes[i++];
if (c > 127) {
if (c > 191 && c < 224) {
if (i >= length)
throw new Error("UTF-8 decode: incomplete 2-byte sequence");
c = (c & 31) << 6 | bytes[i++] & 63;
}
else if (c > 223 && c < 240) {
if (i + 1 >= length)
throw new Error("UTF-8 decode: incomplete 3-byte sequence");
c = (c & 15) << 12 | (bytes[i++] & 63) << 6 | bytes[i++] & 63;
}
else if (c > 239 && c < 248) {
if (i + 2 >= length)
throw new Error("UTF-8 decode: incomplete 4-byte sequence");
c = (c & 7) << 18 | (bytes[i++] & 63) << 12 | (bytes[i++] & 63) << 6 | bytes[i++] & 63;
}
else throw new Error("UTF-8 decode: unknown multibyte start 0x" + c.toString(16) + " at index " + (i - 1));
}
if (c <= 0xffff) str += String.fromCharCode(c);
else if (c <= 0x10ffff) {
c -= 0x10000;
str += String.fromCharCode(c >> 10 | 0xd800)
str += String.fromCharCode(c & 0x3FF | 0xdc00)
}
else throw new Error("UTF-8 decode: code point 0x" + c.toString(16) + " exceeds UTF-16 reach");
}
return str;
}
let msgpack = {
serialize: serialize,
deserialize: deserialize,
encode: serialize,
decode: deserialize
};
if (typeof module === "object" && module && typeof module.exports === "object") {
module.exports = msgpack;
}
else {
window[window.msgpackJsName || "msgpack"] = msgpack;
}
})();