Add LZMA Compress operation

src/core/config/Categories.json

@@ -331,7 +331,8 @@
             "Tar",
             "Untar",
             "LZString Compress",
-            "LZString Decompress"
+            "LZString Decompress",
+            "LZMA Compress"
         ]
     },
     {

src/core/operations/LZMACompress.mjs

@@ -0,0 +1,62 @@
+/**
+ * @author Matt C [me@mitt.dev]
+ * @copyright Crown Copyright 2022
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+
+import { compress } from "@blu3r4y/lzma";
+
+/**
+ * LZMA Compress operation
+ */
+class LZMACompress extends Operation {
+
+    /**
+     * LZMACompress constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "LZMA Compress";
+        this.module = "Compression";
+        this.description = "Compresses data using the Lempel\u2013Ziv\u2013Markov chain algorithm. Compression mode determines the speed and effectiveness of the compression: 1 is fastest and less effective, 9 is slowest and most effective";
+        this.infoURL = "https://wikipedia.org/wiki/Lempel%E2%80%93Ziv%E2%80%93Markov_chain_algorithm";
+        this.inputType = "ArrayBuffer";
+        this.outputType = "ArrayBuffer";
+        this.args = [
+            {
+                name: "Compression Mode",
+                type: "option",
+                value: [
+                    "1", "2", "3", "4", "5", "6", "7", "8", "9"
+                ],
+                "defaultIndex": 6
+            }
+        ];
+    }
+
+    /**
+     * @param {ArrayBuffer} input
+     * @param {Object[]} args
+     * @returns {ArrayBuffer}
+     */
+    run(input, args) {
+        return new Promise((resolve, reject) => {
+            compress(new Uint8Array(input), Number(args[0]), (result, error) => {
+                if (error) {
+                    reject(new OperationError(`Failed to compress input: ${error.message}`));
+                }
+                // The compression returns as an Int8Array, but we can just get the unsigned data from the buffer
+                resolve(new Int8Array(result).buffer);
+            }, (percent) => {
+                self.sendStatusMessage(`Compressing input: ${(percent*100).toFixed(2)}%`);
+            });
+        });
+    }
+
+}
+
+export default LZMACompress;