Converted the core to ES modules

src/core/operations/legacy/HTTP.js

@@ -0,0 +1,158 @@
+import UAParser from "ua-parser-js";
+
+
+/**
+ * HTTP operations.
+ *
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2016
+ * @license Apache-2.0
+ *
+ * @namespace
+ */
+const HTTP = {
+
+    /**
+     * @constant
+     * @default
+     */
+    METHODS: [
+        "GET", "POST", "HEAD",
+        "PUT", "PATCH", "DELETE",
+        "CONNECT", "TRACE", "OPTIONS"
+    ],
+
+
+    /**
+     * Strip HTTP headers operation.
+     *
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    runStripHeaders: function(input, args) {
+        let headerEnd = input.indexOf("\r\n\r\n");
+        headerEnd = (headerEnd < 0) ? input.indexOf("\n\n") + 2 : headerEnd + 4;
+
+        return (headerEnd < 2) ? input : input.slice(headerEnd, input.length);
+    },
+
+
+    /**
+     * Parse User Agent operation.
+     *
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    runParseUserAgent: function(input, args) {
+        const ua = UAParser(input);
+        return `Browser
+    Name: ${ua.browser.name || "unknown"}
+    Version: ${ua.browser.version || "unknown"}
+Device
+    Model: ${ua.device.model || "unknown"}
+    Type: ${ua.device.type || "unknown"}
+    Vendor: ${ua.device.vendor || "unknown"}
+Engine
+    Name: ${ua.engine.name || "unknown"}
+    Version: ${ua.engine.version || "unknown"}
+OS
+    Name: ${ua.os.name || "unknown"}
+    Version: ${ua.os.version || "unknown"}
+CPU
+    Architecture: ${ua.cpu.architecture || "unknown"}`;
+    },
+
+
+    /**
+     * @constant
+     * @default
+     */
+    MODE: [
+        "Cross-Origin Resource Sharing",
+        "No CORS (limited to HEAD, GET or POST)",
+    ],
+
+    /**
+     * Lookup table for HTTP modes
+     *
+     * @private
+     * @constant
+     */
+    _modeLookup: {
+        "Cross-Origin Resource Sharing": "cors",
+        "No CORS (limited to HEAD, GET or POST)": "no-cors",
+    },
+
+    /**
+     * HTTP request operation.
+     *
+     * @author tlwr [toby@toby.codes]
+     * @author n1474335 [n1474335@gmail.com]
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    runHTTPRequest(input, args) {
+        const method = args[0],
+            url = args[1],
+            headersText = args[2],
+            mode = args[3],
+            showResponseMetadata = args[4];
+
+        if (url.length === 0) return "";
+
+        let headers = new Headers();
+        headersText.split(/\r?\n/).forEach(line => {
+            line = line.trim();
+
+            if (line.length === 0) return;
+
+            let split = line.split(":");
+            if (split.length !== 2) throw `Could not parse header in line: ${line}`;
+
+            headers.set(split[0].trim(), split[1].trim());
+        });
+
+        let config = {
+            method: method,
+            headers: headers,
+            mode: HTTP._modeLookup[mode],
+            cache: "no-cache",
+        };
+
+        if (method !== "GET" && method !== "HEAD") {
+            config.body = input;
+        }
+
+        return fetch(url, config)
+            .then(r => {
+                if (r.status === 0 && r.type === "opaque") {
+                    return "Error: Null response. Try setting the connection mode to CORS.";
+                }
+
+                if (showResponseMetadata) {
+                    let headers = "";
+                    for (let pair of r.headers.entries()) {
+                        headers += "    " + pair[0] + ": " + pair[1] + "\n";
+                    }
+                    return r.text().then(b => {
+                        return "####\n  Status: " + r.status + " " + r.statusText +
+                            "\n  Exposed headers:\n" + headers + "####\n\n" + b;
+                    });
+                }
+                return r.text();
+            })
+            .catch(e => {
+                return e.toString() +
+                    "\n\nThis error could be caused by one of the following:\n" +
+                    " - An invalid URL\n" +
+                    " - Making a request to an insecure resource (HTTP) from a secure source (HTTPS)\n" +
+                    " - Making a cross-origin request to a server which does not support CORS\n";
+            });
+    },
+
+};
+
+export default HTTP;