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/**
* Copyright 2013, 2014 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";
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 filename = msg.filename || this.filename;
if (filename === "") {
node.warn('No filename specified');
} else if (msg.hasOwnProperty('delete')) {
fs.unlink(filename, function (err) {
if (err) { node.warn('Failed to delete file : '+err); }
//console.log('Deleted file",filename);
});
} else if (typeof msg.payload != "undefined") {
var data = msg.payload;
if (typeof data === "object") {
if (!Buffer.isBuffer(data)) {
data = JSON.stringify(data);
}
}
if (typeof data === "boolean") { data = data.toString(); }
if ((this.appendNewline)&&(!Buffer.isBuffer(data))) { data += "\n"; }
if (this.overwriteFile) {
// using "binary" not {encoding:"binary"} to be 0.8 compatible for a while
fs.writeFile(filename, data, "binary", function (err) {
if (err) { node.warn('Failed to write to file : '+err); }
//console.log('Message written to file',filename);
});
}
else {
// using "binary" not {encoding:"binary"} to be 0.8 compatible for a while
fs.appendFile(filename, data, "binary", function (err) {
if (err) { node.warn('Failed to append to file : '+err); }
//console.log('Message appended to file',filename);
});
}
}
});
}
RED.nodes.registerType("file",FileNode);
function FileInNode(n) {
RED.nodes.createNode(this,n);
this.filename = n.filename || "";
this.format = n.format;
var node = this;
var options = {};
if (this.format) {
options['encoding'] = this.format;
}
this.on("input",function(msg) {
var filename = msg.filename || this.filename;
if (filename === "") {
node.warn('No filename specified');
} else {
fs.readFile(filename,options,function(err,data) {
if (err) {
node.warn(err);
msg.error = err;
} else {
msg.filename = filename;
msg.payload = data;
}
node.send(msg);
});
}
});
}
RED.nodes.registerType("file in",FileInNode);
}
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