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node-red/nodes/storage/50-file.js

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2013-09-05 16:02:48 +02:00
/**
* 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("../../red/red");
var fs = require("fs");
function FileNode(n) {
RED.nodes.createNode(this,n);
this.filename = n.filename;
this.appendNewline = n.appendNewline;
this.overwriteFile = n.overwriteFile;
var node = this;
this.on("input",function(msg) {
var data = msg.payload;
if (this.appendNewline) {
data += "\n";
}
if (this.overwriteFile) {
fs.writeFile(this.filename, data, function (err) {
if (err) node.warn('Failed to write to file : '+err);
//console.log('Message written to file',this.filename);
});
}
else {
fs.appendFile(this.filename, data, function (err) {
if (err) node.warn('Failed to append to file : '+err);
//console.log('Message appended to file',this.filename);
});
}
});
}
RED.nodes.registerType("file",FileNode);