mirror of https://github.com/gchq/CyberChef.git
95 lines
2.5 KiB
JavaScript
95 lines
2.5 KiB
JavaScript
/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2018
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* @license Apache-2.0
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*/
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import Operation from "../Operation";
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import Utils from "../Utils";
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import XRegExp from "xregexp";
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/**
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* Find / Replace operation
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*/
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class FindReplace extends Operation {
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/**
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* FindReplace constructor
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*/
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constructor() {
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super();
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this.name = "Find / Replace";
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this.module = "Regex";
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this.description = "Replaces all occurrences of the first string with the second.<br><br>Includes support for regular expressions (regex), simple strings and extended strings (which support \\n, \\r, \\t, \\b, \\f and escaped hex bytes using \\x notation, e.g. \\x00 for a null byte).";
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this.infoURL = "https://wikipedia.org/wiki/Regular_expression";
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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": "Find",
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"type": "toggleString",
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"value": "",
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"toggleValues": ["Regex", "Extended (\\n, \\t, \\x...)", "Simple string"]
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},
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{
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"name": "Replace",
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"type": "binaryString",
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"value": ""
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},
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{
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"name": "Global match",
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"type": "boolean",
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"value": true
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},
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{
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"name": "Case insensitive",
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"type": "boolean",
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"value": false
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},
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{
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"name": "Multiline matching",
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"type": "boolean",
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"value": true
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},
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{
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"name": "Dot matches all",
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"type": "boolean",
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"value": false
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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 [{option: type}, replace, g, i, m, s] = args;
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let find = args[0].string,
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modifiers = "";
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if (g) modifiers += "g";
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if (i) modifiers += "i";
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if (m) modifiers += "m";
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if (s) modifiers += "s";
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if (type === "Regex") {
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find = new XRegExp(find, modifiers);
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return input.replace(find, replace);
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}
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if (type.indexOf("Extended") === 0) {
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find = Utils.parseEscapedChars(find);
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}
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find = new XRegExp(Utils.escapeRegex(find), modifiers);
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return input.replace(find, replace);
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}
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}
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export default FindReplace;
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