Add env.get to Function node

nodes/core/core/80-function.html

@@ -53,12 +53,14 @@
     <p>The Catch node can also be used to handle errors. To invoke a Catch node,
     pass <code>msg</code> as a second argument to <code>node.error</code>:</p>
     <pre>node.error("Error",msg);</pre>
-    <h4>Referring Node Information</h4>
+    <h4>Accessing Node Information</h4>
     <p>In the function block, id and name of the node can be referenced using the following properties:</p>
     <ul>
         <li><code>node.id</code> - id of the node</li>
         <li><code>node.name</code> - name of the node</li>
     </ul>
+    <h4>Using environment variables</h4>
+    <p>Environment variables can be accessed using <code>env.get("MY_ENV_VAR")</code>.</p>
 </script>
 
 <script type="text/javascript">

nodes/core/core/80-function.js

@@ -156,6 +156,13 @@ module.exports = function(RED) {
                     return node.context().global.keys.apply(node,arguments);
                 }
             },
+            env: {
+                get: function(envVar) {
+                    // For now, just return the env var. This will eventually
+                    // also return project settings and subflow instance properties
+                    return process.env[envVar]
+                }
+            },
             setTimeout: function () {
                 var func = arguments[0];
                 var timerId;