Adding operation to insert a delimiter at a given interval

src/core/config/Categories.json

@@ -320,7 +320,8 @@
             "Unescape string",
             "Pseudo-Random Number Generator",
             "Sleep",
-            "File Tree"
+            "File Tree",
+            "Insert Delimiter"
         ]
     },
     {

src/core/operations/InsertDelimiter.mjs

@@ -0,0 +1,54 @@
+/**
+ * @author 0xff1ce [github.com/0xff1ce]
+ * @copyright Crown Copyright 2024
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+
+/**
+ * InsertDelimiter operation
+ */
+class InsertDelimiter extends Operation {
+
+    /**
+     * InsertDelimiter constructor
+     */
+    constructor() {
+        super();
+        this.name = "Insert Delimiter";
+        this.module = "Default";
+        this.description = "Inserts a given delimiter at regular intervals within the input string.";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [
+            {
+                "name": "Interval",
+                "type": "number",
+                "value": 8,  // Default interval is 8
+            },
+            {
+                "name": "Delimiter",
+                "type": "string",
+                "value": " ",  // Default delimiter is a space
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        if (!input) return ""
+
+        if (isNaN(args[0]) || args[0] <= 0) {
+            return "Invalid interval: must be a positive integer.";
+        }
+
+        return input.match(new RegExp(`.{1,${parseInt(args[0])}}`, 'g')).join(args[1]);
+    }
+}
+
+export default InsertDelimiter;

tests/operations/index.mjs

@@ -83,6 +83,7 @@ import "./tests/Hexdump.mjs";
 import "./tests/HKDF.mjs";
 import "./tests/Image.mjs";
 import "./tests/IndexOfCoincidence.mjs";
+import "./tests/InsertDelimiter.mjs";
 import "./tests/JA3Fingerprint.mjs";
 import "./tests/JA4.mjs";
 import "./tests/JA3SFingerprint.mjs";

tests/operations/tests/InsertDelimiter.mjs

@@ -0,0 +1,65 @@
+/**
+ * @author 0xff1ce [github.com/0xff1ce]
+ * @copyright Crown Copyright 2024
+ * @license Apache-2.0
+ */
+
+import TestRegister from "../../lib/TestRegister.mjs";
+
+TestRegister.addTests([
+    {
+        name: "Insert space every 8 characters",
+        input: "010010000110010101101100011011000110111100100000010101110110111101110010011011000110010000100001",
+        expectedOutput: "01001000 01100101 01101100 01101100 01101111 00100000 01010111 01101111 01110010 01101100 01100100 00100001",
+        recipeConfig: [
+            {
+                "op": "Insert Delimiter",
+                "args": [8, " "]
+            },
+        ],
+    },
+    {
+        name: "Insert newline every 4 characters",
+        input: "ABCDEFGHIJKL",
+        expectedOutput: "ABCD\nEFGH\nIJKL",
+        recipeConfig: [
+            {
+                "op": "Insert Delimiter",
+                "args": [4, "\n"]
+            },
+        ],
+    },
+    {
+        name: "Insert hyphen every 3 characters",
+        input: "1234567890",
+        expectedOutput: "123-456-789-0",
+        recipeConfig: [
+            {
+                "op": "Insert Delimiter",
+                "args": [3, "-"]
+            },
+        ],
+    },
+    {
+        name: "Use a float as delimiter",
+        input: "1234567890",
+        expectedOutput: "123-456-789-0",
+        recipeConfig: [
+            {
+                "op": "Insert Delimiter",
+                "args": [3.4, "-"]
+            },
+        ],
+    },
+    {
+        name: "Handle empty input gracefully",
+        input: "",
+        expectedOutput: "",
+        recipeConfig: [
+            {
+                "op": "Insert Delimiter",
+                "args": [8, " "]
+            },
+        ],
+    }
+]);