CyberChef/src/core/operations/FindReplace.mjs

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2018-05-28 01:39:03 +02:00
/**
* @author n1474335 [n1474335@gmail.com]
* @copyright Crown Copyright 2018
* @license Apache-2.0
*/
import Operation from "../Operation";
import Utils from "../Utils";
import XRegExp from "xregexp";
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/**
* Find / Replace operation
*/
class FindReplace extends Operation {
/**
* FindReplace constructor
*/
constructor() {
super();
this.name = "Find / Replace";
this.module = "Regex";
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).";
this.infoURL = "https://wikipedia.org/wiki/Regular_expression";
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this.inputType = "string";
this.outputType = "string";
this.args = [
{
"name": "Find",
"type": "toggleString",
"value": "",
"toggleValues": ["Regex", "Extended (\\n, \\t, \\x...)", "Simple string"]
},
{
"name": "Replace",
"type": "binaryString",
"value": ""
},
{
"name": "Global match",
"type": "boolean",
"value": true
},
{
"name": "Case insensitive",
"type": "boolean",
"value": false
},
{
"name": "Multiline matching",
"type": "boolean",
"value": true
},
{
"name": "Dot matches all",
"type": "boolean",
"value": false
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}
];
}
/**
* @param {string} input
* @param {Object[]} args
* @returns {string}
*/
run(input, args) {
const [{option: type}, replace, g, i, m, s] = args;
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let find = args[0].string,
modifiers = "";
if (g) modifiers += "g";
if (i) modifiers += "i";
if (m) modifiers += "m";
if (s) modifiers += "s";
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if (type === "Regex") {
find = new XRegExp(find, modifiers);
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return input.replace(find, replace);
}
if (type.indexOf("Extended") === 0) {
find = Utils.parseEscapedChars(find);
}
find = new XRegExp(Utils.escapeRegex(find), modifiers);
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return input.replace(find, replace);
}
}
export default FindReplace;