Merge pull request #1897 from sw5678/master

Author: a3957273

src/core/config/Categories.json

@@ -294,6 +294,7 @@
             "To Upper case",
             "To Lower case",
             "Swap case",
+            "Alternating Caps",
             "To Case Insensitive Regex",
             "From Case Insensitive Regex",
             "Add line numbers",

src/core/operations/AlternatingCaps.mjs

@@ -0,0 +1,53 @@
+/**
+ * @author sw5678
+ * @copyright Crown Copyright 2023
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+
+/**
+ * Alternating caps operation
+ */
+class AlternatingCaps extends Operation {
+
+    /**
+     * AlternatingCaps constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Alternating Caps";
+        this.module = "Default";
+        this.description = "Alternating caps, also known as studly caps, sticky caps, or spongecase is a form of text notation in which the capitalization of letters varies by some pattern, or arbitrarily. An example of this would be spelling 'alternative caps' as 'aLtErNaTiNg CaPs'.";
+        this.infoURL = "https://en.wikipedia.org/wiki/Alternating_caps";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args= [];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        let output = "";
+        let previousCaps = true;
+        for (let i = 0; i < input.length; i++) {
+            // Check if the element is a letter
+            if (!RegExp(/^\p{L}/, "u").test(input[i])) {
+                output += input[i];
+            } else if (previousCaps) {
+                output += input[i].toLowerCase();
+                previousCaps = false;
+            } else {
+                output += input[i].toUpperCase();
+                previousCaps = true;
+            }
+        }
+        return output;
+    }
+}
+
+export default AlternatingCaps;

tests/operations/index.mjs

@@ -15,6 +15,7 @@ import { setLongTestFailure, logTestReport } from "../lib/utils.mjs";
 
 import TestRegister from "../lib/TestRegister.mjs";
 import "./tests/AESKeyWrap.mjs";
+import "./tests/AlternatingCaps.mjs";
 import "./tests/AvroToJSON.mjs";
 import "./tests/BaconCipher.mjs";
 import "./tests/Base32.mjs";

tests/operations/tests/AlternatingCaps.mjs

@@ -0,0 +1,19 @@
+/* @author sw5678
+ * @copyright Crown Copyright 2024
+ * @license Apache-2.0
+ */
+import TestRegister from "../../lib/TestRegister.mjs";
+
+TestRegister.addTests([
+    {
+        "name": "AlternatingCaps: Basic Example",
+        "input": "Hello, world!",
+        "expectedOutput": "hElLo, WoRlD!",
+        "recipeConfig": [
+            {
+                "op": "Alternating Caps",
+                "args": []
+            },
+        ],
+    }
+]);