mirror of https://github.com/node-red/node-red.git
92 lines
3.2 KiB
JavaScript
92 lines
3.2 KiB
JavaScript
/**
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* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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module.exports = function(RED) {
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"use strict";
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var Notify = require("fs.notify");
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var fs = require("fs");
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var path = require("path");
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var getAllDirs = function (dir, filelist) {
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filelist = filelist || [];
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fs.readdirSync(dir).forEach(file => {
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if (fs.statSync(path.join(dir, file)).isDirectory() ) {
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filelist.push(path.join(dir, file));
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getAllDirs(path.join(dir, file), filelist);
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}
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});
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return filelist;
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}
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function WatchNode(n) {
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RED.nodes.createNode(this,n);
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this.recursive = n.recursive || false;
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this.files = (n.files || "").split(",");
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for (var f=0; f < this.files.length; f++) {
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this.files[f] = this.files[f].trim();
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}
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this.p = (this.files.length === 1) ? this.files[0] : JSON.stringify(this.files);
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var node = this;
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if (node.recursive) {
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for (var fi in node.files) {
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if (node.files.hasOwnProperty(fi)) {
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node.files = node.files.concat(getAllDirs( node.files[fi]));
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}
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}
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}
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var notifications = new Notify(node.files);
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notifications.on('change', function (file, event, fpath) {
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var stat;
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try {
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if (fs.statSync(fpath).isDirectory()) { fpath = path.join(fpath,file); }
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stat = fs.statSync(fpath);
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} catch(e) { }
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var type = "none";
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var msg = { payload:fpath, topic:node.p, file:file, filename:fpath };
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if (stat) {
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if (stat.isFile()) { type = "file"; msg.size = stat.size; }
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else if (stat.isBlockDevice()) { type = "blockdevice"; }
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else if (stat.isCharacterDevice()) { type = "characterdevice"; }
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else if (stat.isSocket()) { type = "socket"; }
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else if (stat.isFIFO()) { type = "fifo"; }
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else if (stat.isDirectory()) {
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type = "directory";
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if (node.recursive) {
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notifications.add([fpath]);
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notifications.add(getAllDirs(fpath));
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}
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}
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else { type = "n/a"; }
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}
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msg.type = type;
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node.send(msg);
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});
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notifications.on('error', function (error, fpath) {
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var msg = { payload:fpath };
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node.error(error,msg);
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});
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this.close = function() {
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notifications.close();
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}
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}
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RED.nodes.registerType("watch",WatchNode);
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}
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