mirror of https://github.com/node-red/node-red.git
79 lines
3.5 KiB
JavaScript
79 lines
3.5 KiB
JavaScript
/**
|
|
* Copyright 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) {
|
|
function CSVNode(n) {
|
|
RED.nodes.createNode(this,n);
|
|
this.template = n.temp.split(",");
|
|
this.sep = n.sep || ',';
|
|
this.sep = this.sep.replace("\\n","\n").replace("\\r","\r").replace("\\t","\t");
|
|
this.quo = '"';
|
|
var node = this;
|
|
this.on("input", function(msg) {
|
|
if (msg.hasOwnProperty("payload")) {
|
|
if (typeof msg.payload == "object") { // convert to csv
|
|
try {
|
|
var o = "";
|
|
for (var i in node.template) {
|
|
if (msg.payload.hasOwnProperty(node.template[i])) {
|
|
if (msg.payload[node.template[i]].indexOf(node.sep) != -1) {
|
|
o += node.quo + msg.payload[node.template[i]] + node.quo + node.sep;
|
|
}
|
|
else if (msg.payload[node.template[i]].indexOf(node.quo) != -1) {
|
|
msg.payload[node.template[i]] = msg.payload[node.template[i]].replace(/"/g, '""');
|
|
o += node.quo + msg.payload[node.template[i]] + node.quo + node.sep;
|
|
}
|
|
else { o += msg.payload[node.template[i]] + node.sep; }
|
|
}
|
|
}
|
|
msg.payload = o.slice(0,-1);
|
|
node.send(msg);
|
|
}
|
|
catch(e) { node.log(e); }
|
|
}
|
|
else if (typeof msg.payload == "string") { // convert to object
|
|
try {
|
|
var f = true;
|
|
var j = 0;
|
|
var k = [""];
|
|
var o = {};
|
|
for (var i = 0; i < msg.payload.length; i++) {
|
|
if (msg.payload[i] === node.quo) {
|
|
f = !f;
|
|
if (msg.payload[i-1] === node.quo) { k[j] += '\"'; }
|
|
}
|
|
else if ((msg.payload[i] === node.sep) && f) {
|
|
if ( node.template[j] && (node.template[j] != "") ) { o[node.template[j]] = k[j]; }
|
|
j += 1;
|
|
k[j] = "";
|
|
}
|
|
else {
|
|
k[j] += msg.payload[i];
|
|
}
|
|
}
|
|
if ( node.template[j] && (node.template[j] != "") ) { o[node.template[j]] = k[j]; }
|
|
msg.payload = o;
|
|
node.send(msg);
|
|
}
|
|
catch(e) { node.log(e); }
|
|
}
|
|
else { node.log("This node only handles csv strings or js objects."); }
|
|
}
|
|
});
|
|
}
|
|
RED.nodes.registerType("csv",CSVNode);
|
|
}
|