55 lines
1.2 KiB
JavaScript
55 lines
1.2 KiB
JavaScript
|
/**
|
||
|
|
* @author tcode2k16 [tcode2k16@gmail.com]
|
||
|
|
* @copyright Crown Copyright 2018
|
||
|
|
* @license Apache-2.0
|
||
|
|
*/
|
||
|
|
|
||
|
|
import Operation from "../Operation";
|
||
|
|
import BigNumber from "bignumber.js";
|
||
|
|
import Utils from "../Utils";
|
||
|
|
import {toHexFast} from "../lib/Hex";
|
||
|
|
|
||
|
|
/**
|
||
|
|
* To Base62 operation
|
||
|
|
*/
|
||
|
|
class ToBase62 extends Operation {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ToBase62 constructor
|
||
|
|
*/
|
||
|
|
constructor() {
|
||
|
|
super();
|
||
|
|
|
||
|
|
this.name = "To Base62";
|
||
|
|
this.module = "Default";
|
||
|
|
this.description = "encode string to base62";
|
||
|
|
this.infoURL = "https://en.wikipedia.org/wiki/List_of_numeral_systems";
|
||
|
|
this.inputType = "string";
|
||
|
|
this.outputType = "string";
|
||
|
|
this.args = [];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {string} input
|
||
|
|
* @param {Object[]} args
|
||
|
|
* @returns {string}
|
||
|
|
*/
|
||
|
|
run(input, args) {
|
||
|
|
if (input.length < 1) return "";
|
||
|
|
|
||
|
|
const ALPHABET = Utils.expandAlphRange("0-9A-Za-z").join("");
|
||
|
|
const BN = BigNumber.clone({ ALPHABET });
|
||
|
|
|
||
|
|
input = Utils.strToByteArray(input);
|
||
|
|
input = toHexFast(input);
|
||
|
|
input = input.toUpperCase();
|
||
|
|
|
||
|
|
const number = new BN(input, 16);
|
||
|
|
|
||
|
|
return number.toString(62);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
export default ToBase62;
|