cocos-nodejs-io-game/test.js
2022-12-04 22:10:30 +08:00

31 lines
848 B
JavaScript

const msg = JSON.stringify({
a: 123,
b: true,
c: "456"
})
const strencode = (str) => {
let byteArray = [];
for (let i = 0; i < str.length; i++) {
let charCode = str.charCodeAt(i);
if (charCode <= 0x7f) {
byteArray.push(charCode);
} else if (charCode <= 0x7ff) {
byteArray.push(0xc0 | (charCode >> 6), 0x80 | (charCode & 0x3f));
} else if (charCode <= 0xffff) {
byteArray.push(0xe0 | (charCode >> 12), 0x80 | ((charCode & 0xfc0) >> 6), 0x80 | (charCode & 0x3f));
} else {
byteArray.push(0xf0 | (charCode >> 18), 0x80 | ((charCode & 0x3f000) >> 12), 0x80 | ((charCode & 0xfc0) >> 6), 0x80 | (charCode & 0x3f));
}
}
return byteArray;
}
var arr = strencode(msg)
var buffer = Buffer.from(msg)
console.log(buffer)
for (let i = 0; i < arr.length; i++) {
console.log(buffer[i], arr[i]);
}