|
@@ -0,0 +1,67 @@
|
|
|
|
+/**
|
|
|
|
+ * @author sg5506844 [sg5506844@gmail.com]
|
|
|
|
+ * @copyright Crown Copyright 2021
|
|
|
|
+ * @license Apache-2.0
|
|
|
|
+ */
|
|
|
|
+
|
|
|
|
+import { base92Chr } from "../lib/Base92.mjs";
|
|
|
|
+import Operation from "../Operation.mjs";
|
|
|
|
+
|
|
|
|
+/**
|
|
|
|
+ * To Base92 operation
|
|
|
|
+ */
|
|
|
|
+class ToBase92 extends Operation {
|
|
|
|
+ /**
|
|
|
|
+ * ToBase92 constructor
|
|
|
|
+ */
|
|
|
|
+ constructor() {
|
|
|
|
+ super();
|
|
|
|
+
|
|
|
|
+ this.name = "To Base92";
|
|
|
|
+ this.module = "Default";
|
|
|
|
+ this.description = "Base92 is a notation for encoding arbitrary byte data using a restricted set of symbols that can be conveniently used by humans and processed by computers.";
|
|
|
|
+ this.infoURL = "https://wikipedia.org/wiki/List_of_numeral_systems";
|
|
|
|
+ this.inputType = "string";
|
|
|
|
+ this.outputType = "byteArray";
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * @param {string} input
|
|
|
|
+ * @param {Object[]} args
|
|
|
|
+ * @returns {byteArray}
|
|
|
|
+ */
|
|
|
|
+ run(input, args) {
|
|
|
|
+ const res = [];
|
|
|
|
+ let bitString = "";
|
|
|
|
+
|
|
|
|
+ while (input.length > 0) {
|
|
|
|
+ while (bitString.length < 13 && input.length > 0) {
|
|
|
|
+ bitString += input[0].charCodeAt(0).toString(2).padStart(8, "0");
|
|
|
|
+ input = input.slice(1);
|
|
|
|
+ }
|
|
|
|
+ if (bitString.length < 13)
|
|
|
|
+ break;
|
|
|
|
+ const i = parseInt(bitString.slice(0, 13), 2);
|
|
|
|
+ res.push(base92Chr(Math.floor(i / 91)));
|
|
|
|
+ res.push(base92Chr(i % 91));
|
|
|
|
+ bitString = bitString.slice(13);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (bitString.length > 0) {
|
|
|
|
+ if (bitString.length < 7) {
|
|
|
|
+ bitString = bitString.padEnd(6, "0");
|
|
|
|
+ res.push(base92Chr(parseInt(bitString, 2)));
|
|
|
|
+ } else {
|
|
|
|
+ bitString = bitString.padEnd(13, "0");
|
|
|
|
+ const i = parseInt(bitString.slice(0, 13), 2);
|
|
|
|
+ res.push(base92Chr(Math.floor(i / 91)));
|
|
|
|
+ res.push(base92Chr(i % 91));
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return res;
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+export default ToBase92;
|