All Case Variations Of String

src/core/config/Categories.json

@@ -217,6 +217,7 @@
             "From Case Insensitive Regex",
             "Add line numbers",
             "Remove line numbers",
+            "Get All Casings",
             "To Table",
             "Reverse",
             "Sort",

src/core/operations/GetAllCasings.mjs

@@ -0,0 +1,53 @@
+/**
+ * @author n1073645 [n1073645@gmail.com]
+ * @copyright Crown Copyright 2020
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+
+/**
+ * Permutate String operation
+ */
+class GetAllCasings extends Operation {
+
+    /**
+     * GetAllCasings constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Get All Casings";
+        this.module = "Default";
+        this.description = "Outputs all possible casing variations of a string.";
+        this.infoURL = "";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        const length = input.length;
+        const max = 1 << length;
+        input = input.toLowerCase();
+        let result = "";
+
+        for (let i = 0; i < max; i++) {
+            const temp = input.split("");
+            for (let j = 0; j < length; j++) {
+                if (((i >> j) & 1) === 1) {
+                    temp[j] = temp[j].toUpperCase();
+                }
+            }
+            result += temp.join("") + "\n";
+        }
+        return result;
+    }
+}
+
+export default GetAllCasings;

tests/operations/index.mjs

@@ -101,7 +101,7 @@ import "./tests/LuhnChecksum.mjs";
 import "./tests/CipherSaber2.mjs";
 import "./tests/Colossus.mjs";
 import "./tests/ParseObjectIDTimestamp.mjs";
-
+import "./tests/GetAllCasings.mjs";
 
 // Cannot test operations that use the File type yet
 // import "./tests/SplitColourChannels.mjs";

tests/operations/tests/GetAllCasings.mjs

@@ -0,0 +1,44 @@
+/**
+ * GetAllCasings tests.
+ *
+ * @author n1073645 [n1073645@gmail.com]
+ * @copyright Crown Copyright 2020
+ * @license Apache-2.0
+ */
+import TestRegister from "../../lib/TestRegister.mjs";
+
+TestRegister.addTests([
+    {
+        name: "All casings of test",
+        input: "test",
+        expectedOutput: "test\nTest\ntEst\nTEst\nteSt\nTeSt\ntESt\nTESt\ntesT\nTesT\ntEsT\nTEsT\nteST\nTeST\ntEST\nTEST\n",
+        recipeConfig: [
+            {
+                "op": "Get All Casings",
+                "args": []
+            }
+        ]
+    },
+    {
+        name: "All casings of t",
+        input: "t",
+        expectedOutput: "t\nT\n",
+        recipeConfig: [
+            {
+                "op": "Get All Casings",
+                "args": []
+            }
+        ]
+    },
+    {
+        name: "All casings of null",
+        input: "",
+        expectedOutput: "\n",
+        recipeConfig: [
+            {
+                "op": "Get All Casings",
+                "args": []
+            }
+        ]
+    }
+]);