mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
Adding exception handling to the change node to prevent node-RED from crashing on invalid regular expressions eg. “*kW” (missing escape before the asterix)
71 lines
2.3 KiB
JavaScript
71 lines
2.3 KiB
JavaScript
/**
|
|
* 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.
|
|
**/
|
|
|
|
var RED = require(process.env.NODE_RED_HOME + "/red/red");
|
|
|
|
function ChangeNode(n) {
|
|
RED.nodes.createNode(this, n);
|
|
this.action = n.action;
|
|
this.property = n.property || "";
|
|
this.from = n.from || " ";
|
|
this.to = n.to || " ";
|
|
var node = this;
|
|
|
|
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");
|
|
if (typeof msg[node.property] === "string") {
|
|
msg[node.property] = (msg[node.property]).replace(node.re, node.to);
|
|
}
|
|
} catch(err) {
|
|
this.error(err.message);
|
|
}
|
|
}
|
|
//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);
|