Casing Variations

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;