Merge branch 'n1073645-EPOCH'

src/core/config/Categories.json

@@ -267,6 +267,7 @@
             "Windows Filetime to UNIX Timestamp",
             "UNIX Timestamp to Windows Filetime",
             "Extract dates",
+            "Get Time",
             "Sleep"
         ]
     },

src/core/operations/GetTime.mjs

@@ -0,0 +1,62 @@
+/**
+ * @author n1073645 [n1073645@gmail.com]
+ * @copyright Crown Copyright 2020
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+import {UNITS} from "../lib/DateTime.mjs";
+
+/**
+ * Get Time operation
+ */
+class GetTime extends Operation {
+
+    /**
+     * GetTime constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Get Time";
+        this.module = "Default";
+        this.description = "Generates a timestamp showing the amount of time since the UNIX epoch (1970-01-01 00:00:00 UTC). Uses the W3C High Resolution Time API.";
+        this.infoURL = "https://wikipedia.org/wiki/Unix_time";
+        this.inputType = "string";
+        this.outputType = "number";
+        this.args = [
+            {
+                name: "Granularity",
+                type: "option",
+                value: UNITS
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {number}
+     */
+    run(input, args) {
+        const nowMs = (performance.timeOrigin + performance.now()),
+            granularity = args[0];
+
+        switch (granularity) {
+            case "Nanoseconds (ns)":
+                return Math.round(nowMs * 1000 * 1000);
+            case "Microseconds (μs)":
+                return Math.round(nowMs * 1000);
+            case "Milliseconds (ms)":
+                return Math.round(nowMs);
+            case "Seconds (s)":
+                return Math.round(nowMs / 1000);
+            default:
+                throw new OperationError("Unknown granularity value: " + granularity);
+        }
+    }
+
+}
+
+export default GetTime;