[CCSDK-28] populated the seed code for dgbuilder

[ccsdk/distribution.git] / dgbuilder / core_nodes / logic / 15-change.js

diff --git a/dgbuilder/core_nodes/logic/15-change.js b/dgbuilder/core_nodes/logic/15-change.js
new file mode 100644 (file)
index 0000000..b7ef62e
--- /dev/null
+++ b/dgbuilder/core_nodes/logic/15-change.js
@@ -0,0 +1,74 @@
+/**
+ * Copyright 2013 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+module.exports = function(RED) {
+    "use strict";
+    function ChangeNode(n) {
+        RED.nodes.createNode(this, n);
+        this.action = n.action;
+        this.property = n.property || "";
+        this.from = n.from || " ";
+        this.to = n.to || " ";
+        this.reg = (n.reg === null || n.reg);
+        var node = this;
+        if (node.reg === false) {
+            this.from = this.from.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
+        }
+        var makeNew = function( stem, path, value ) {
+            var lastPart = (arguments.length === 3) ? path.pop() : false;
+            for (var i = 0; i < path.length; i++) {
+                stem = stem[path[i]] = stem[path[i]] || {};
+            }
+            if (lastPart) { stem = stem[lastPart] = value; }
+            return stem;
+        };
+
+        this.on('input', function (msg) {
+            if (node.action == "change") {
+                try {
+                    node.re = new RegExp(this.from, "g");
+                } catch (e) {
+                    node.error(e.message);
+                }
+                if (typeof msg[node.property] === "string") {
+                    msg[node.property] = (msg[node.property]).replace(node.re, node.to);
+                }
+            }
+            //else if (node.action == "replace") {
+                //if (node.to.indexOf("msg.") == 0) {
+                    //msg[node.property] = eval(node.to);
+                //}
+                //else {
+                    //msg[node.property] = node.to;
+                //}
+            //}
+            else if (node.action == "replace") {
+                if (node.to.indexOf("msg.") === 0) {
+                    makeNew( msg, node.property.split("."), eval(node.to) );
+                }
+                else {
+                    makeNew( msg, node.property.split("."), node.to );
+                }
+                //makeNew( msg, node.property.split("."), node.to );
+            }
+            else if (node.action == "delete") {
+                delete(msg[node.property]);
+            }
+            node.send(msg);
+        });
+    }
+    RED.nodes.registerType("change", ChangeNode);
+}