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RocketBall Decoder Buffer
当前为
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.icu/scripts/448028/1071234/RBDB.js
// ==UserScript==
// @name RBDB
// @version 1.0
// @author 0vC4
// @description RocketBall Decoder Buffer
// @namespace http://greasyfork.icu/users/670183-exnonull
// @license MIT
// ==/UserScript==
class ReadBuffer {
offset = 0
buffer = []
finish = false
constructor(packet) {
this.buffer = [...packet];
this.offset = 0
}
next(size=1) {
let offset = this.offset;
this.offset += size;
if (this.offset == this.buffer.length) this.finish = true;
return offset;
}
get skip8() {
this.u8;
return this;
}
get skip16() {
this.u16;
return this;
}
get skip32() {
this.u32;
return this;
}
get skip64() {
this.u64;
return this;
}
get skip7() {
this.int7;
return this;
}
get skipString() {
this.string;
return this;
}
get u8() {
return new Uint8Array([this.buffer[this.next()]])[0];
}
get u16() {
return new Uint16Array(new Uint8Array(this.buffer.slice(this.next(2), this.offset)).buffer)[0];
}
get u32() {
return new Uint32Array(new Uint8Array(this.buffer.slice(this.next(4), this.offset)).buffer)[0];
}
get u64() {
return new BigUint64Array(new Uint8Array(this.buffer.slice(this.next(8), this.offset)).buffer)[0];
}
get s8() {
return new Int8Array([this.buffer[this.next()]])[0];
}
get s16() {
let offset = this.offset;
this.offset += 2;
if (this.offset == this.buffer.length) this.finish = true;
return new Int16Array(new Uint8Array(this.buffer.slice(this.next(2), this.offset)).buffer)[0];
}
get s32() {
return new Int32Array(new Uint8Array(this.buffer.slice(this.next(4), this.offset)).buffer)[0];
}
get s64() {
return new BigInt64Array(new Uint8Array(this.buffer.slice(this.next(8), this.offset)).buffer)[0];
}
get f32() {
return new Float32Array(new Uint8Array(this.buffer.slice(this.next(4), this.offset)).buffer)[0];
}
get f64() {
return new Float64Array(new Uint8Array(this.buffer.slice(this.next(8), this.offset)).buffer)[0];
}
get int7() {
let offset = 0;
let num = 0;
while (offset != 0b100011) {
let byte = this.buffer[this.offset + offset/7];
num |= (byte&0x7f)<<offset;
offset += 7;
if ((byte&0x80) == 0) {
this.next(offset/7);
return num;
}
}
this.next(offset/7);
return num;
}
get string() {
return new TextDecoder().decode(this.buffer.slice(this.next(this.int7), this.offset));
}
get array() {
return new Uint8Array(this.buffer.slice(this.next(this.buffer.length-this.offset), this.offset));
}
}
class WriteBuffer {
offset = 0
buffer = []
constructor(buffer) {
this.buffer = [...buffer];
this.offset = buffer.length;
}
u8(...nums) {
for (let byte of new Uint8Array([...nums]))
this.buffer[this.offset++] = byte;
return this;
}
u16(...nums) {
for (let byte of new Uint8Array(new Uint16Array([...nums]).buffer))
this.buffer[this.offset++] = byte;
return this;
}
u32(...nums) {
for (let byte of new Uint8Array(new Uint32Array([...nums]).buffer))
this.buffer[this.offset++] = byte;
return this;
}
u64(...nums) {
for (let byte of new Uint8Array(new BigUint64Array([...nums]).buffer))
this.buffer[this.offset++] = byte;
return this;
}
s8(...nums) {
for (let byte of new Uint8Array([...nums]))
this.buffer[this.offset++] = byte;
return this;
}
s16(...nums) {
for (let byte of new Uint8Array(new Int16Array([...nums]).buffer))
this.buffer[this.offset++] = byte;
return this;
}
s32(...nums) {
for (let byte of new Uint8Array(new Int32Array([...nums]).buffer))
this.buffer[this.offset++] = byte;
return this;
}
s64(...nums) {
for (let byte of new Uint8Array(new BigInt64Array([...nums]).buffer))
this.buffer[this.offset++] = byte;
return this;
}
f32(...nums) {
for (let byte of new Uint8Array(new Float32Array([...nums]).buffer))
this.buffer[this.offset++] = byte;
return this;
}
f64(...nums) {
for (let byte of new Uint8Array(new Float64Array([...nums]).buffer))
this.buffer[this.offset++] = byte;
return this;
}
int7(...nums) {
const bytes = [];
for (let num of nums) {
while(num >= 0x80) {
num >>= 7;
bytes.push((num|0x80)%0x100);
}
bytes.push(num%0x100);
}
for (let byte of bytes)
this.buffer[this.offset++] = byte;
return this;
}
string(...strs) {
for (let str of strs) {
str = new TextEncoder().encode(str);
this.int7(str.length);
for (let byte of new TextEncoder().encode(str))
this.buffer[this.offset++] = new Uint8Array([byte])[0];
}
return this;
}
array(bytes) {
for (let byte of bytes)
this.buffer[this.offset++] = new Uint8Array([byte])[0];
return this;
}
}
// 0vC4#7152