Converted the core to ES modules

src/core/operations/FromBase64.mjs

@@ -0,0 +1,84 @@
+/**
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2016
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import Utils from "../Utils";
+import {ALPHABET, ALPHABET_OPTIONS} from "../lib/Base64";
+
+/**
+ * From Base64 operation
+ */
+class FromBase64 extends Operation {
+
+    /**
+     * ToBase64 constructor
+     */
+    constructor() {
+        super();
+
+        this.name        = "From Base64";
+        this.module      = "Default";
+        this.description = "Base64 is a notation for encoding arbitrary byte data using a restricted set of symbols that can be conveniently used by humans and processed by computers.<br><br>This operation decodes data from an ASCII Base64 string back into its raw format.<br><br>e.g. <code>aGVsbG8=</code> becomes <code>hello</code>";
+        this.inputType   = "string";
+        this.outputType  = "byteArray";
+        this.args        = [
+            {
+                name: "Alphabet",
+                type: "editableOption",
+                value: ALPHABET_OPTIONS
+            },
+            {
+                name: "Remove non-alphabet chars",
+                type: "boolean",
+                value: true
+            }
+        ];
+    }
+
+    /**
+     * @param {ArrayBuffer} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        let alphabet = args[0] || ALPHABET,
+            removeNonAlphChars = args[1];
+
+        return Utils.fromBase64(input, alphabet, "byteArray", removeNonAlphChars);
+    }
+
+    /**
+     * Highlight to Base64
+     *
+     * @param {Object[]} pos
+     * @param {number} pos[].start
+     * @param {number} pos[].end
+     * @param {Object[]} args
+     * @returns {Object[]} pos
+     */
+    highlight(pos, args) {
+        pos[0].start = Math.ceil(pos[0].start / 4 * 3);
+        pos[0].end = Math.floor(pos[0].end / 4 * 3);
+        return pos;
+    }
+
+    /**
+     * Highlight from Base64
+     *
+     * @param {Object[]} pos
+     * @param {number} pos[].start
+     * @param {number} pos[].end
+     * @param {Object[]} args
+     * @returns {Object[]} pos
+     */
+    highlightReverse(pos, args) {
+        pos[0].start = Math.floor(pos[0].start / 3 * 4);
+        pos[0].end = Math.ceil(pos[0].end / 3 * 4);
+        return pos;
+    }
+}
+
+export default FromBase64;