mirror of https://github.com/gchq/CyberChef.git
63 lines
1.5 KiB
JavaScript
63 lines
1.5 KiB
JavaScript
/**
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* @author Matthieu [m@tthieu.xyz]
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* @copyright Crown Copyright 2019
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* @license Apache-2.0
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*/
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import Operation from "../Operation.mjs";
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import OperationError from "../errors/OperationError.mjs";
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import {UNICODE_NORMALISATION_FORMS} from "../lib/ChrEnc.mjs";
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import unorm from "unorm";
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/**
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* Normalise Unicode operation
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*/
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class NormaliseUnicode extends Operation {
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/**
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* NormaliseUnicode constructor
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*/
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constructor() {
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super();
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this.name = "Normalise Unicode";
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this.module = "Encodings";
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this.description = "Transform Unicode characters to one of the Normalisation Forms";
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this.infoURL = "https://wikipedia.org/wiki/Unicode_equivalence#Normal_forms";
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this.inputType = "string";
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this.outputType = "string";
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this.args = [
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{
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name: "Normal Form",
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type: "option",
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value: UNICODE_NORMALISATION_FORMS
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}
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];
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}
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/**
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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run(input, args) {
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const [normalForm] = args;
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switch (normalForm) {
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case "NFD":
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return unorm.nfd(input);
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case "NFC":
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return unorm.nfc(input);
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case "NFKD":
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return unorm.nfkd(input);
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case "NFKC":
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return unorm.nfkc(input);
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default:
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throw new OperationError("Unknown Normalisation Form");
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}
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}
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}
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export default NormaliseUnicode;
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