node-red/nodes/core/analysis/72-sentiment.js

37 lines
1.2 KiB
JavaScript

/**
* Copyright JS Foundation and other contributors, http://js.foundation
*
* 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";
var sentiment = require('sentiment');
function SentimentNode(n) {
RED.nodes.createNode(this,n);
var node = this;
this.on("input", function(msg) {
if (msg.hasOwnProperty("payload")) {
sentiment(msg.payload, msg.overrides || null, function (err, result) {
msg.sentiment = result;
node.send(msg);
});
}
else { node.send(msg); } // If no payload - just pass it on.
});
}
RED.nodes.registerType("sentiment",SentimentNode);
}