ESM: Port Extract.js module

src/core/operations/ExtractURLs.mjs

@@ -0,0 +1,55 @@
+/**
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2016
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import { search } from "../lib/Extract";
+
+/**
+ * Extract URLs operation
+ */
+class ExtractURLs extends Operation {
+
+    /**
+     * ExtractURLs constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Extract URLs";
+        this.module = "Regex";
+        this.description = "Extracts Uniform Resource Locators (URLs) from the input. The protocol (http, ftp etc.) is required otherwise there will be far too many false positives.";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [
+            {
+                "name": "Display total",
+                "type": "boolean",
+                "value": false
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        const displayTotal = args[0],
+            protocol = "[A-Z]+://",
+            hostname = "[-\\w]+(?:\\.\\w[-\\w]*)+",
+            port = ":\\d+";
+        let path = "/[^.!,?\"<>\\[\\]{}\\s\\x7F-\\xFF]*";
+
+        path += "(?:[.!,?]+[^.!,?\"<>\\[\\]{}\\s\\x7F-\\xFF]+)*";
+        const regex = new RegExp(protocol + hostname + "(?:" + port +
+            ")?(?:" + path + ")?", "ig");
+        return search(input, regex, null, displayTotal);
+    }
+
+}
+
+export default ExtractURLs;