nyx_server/core/utils/Watch.js

Node内容发布

var chokidar = require('chokidar');
var EventEmitter = require('events').EventEmitter;
var anymatch = require('anymatch');
var _ = require("lodash");
var Watch = function () {
  this.files = {};
};

Watch.prototype = {

  createWatch : function(){
    var self = this;
    if(!this.watch){
        this.watch = chokidar.watch([], {ignoreInitial: true}).on('all', function(event , path) {
           self.emit(event , path);
        })
    }
  },

  addPath: function () {
    this.createWatch();
    if(arguments.length < 2){
        return;
    }
    var arr = [].slice.call(arguments, 0);
    var callback = arr.splice(arr.length-1 , 1)[0];
    for (var i = 0; i < arr.length; i++) {
        var file = arguments[i];
        if(_.isArray(file)){
            file.push(callback);
            this.addPath.apply(this , file);
            continue;
        }else{
            this.watch.add(file);
        }
        var callbacks = this.files[file];
        if(!callbacks){
            callbacks = [];
            this.files[file] = callbacks;
        }
        if(callbacks.indexOf(callback) < 0){
            callbacks.push(callback);
        }
    }
  },

  emit: function (event, path) {
     var keys = Object.keys(this.files);
     for(var i=0 ; i<keys.length; i++){
        var key = keys[i];
        if (anymatch(key, path)) {
            var cbs = this.files[key];
            if(cbs && cbs.length>0){
                cbs.forEach(function(cb){
                    cb(event , path);
                })
            }
        }
     }
  }
};

module.exports =  Watch;


if(!module.parent){
   var watch = new Watch();
   watch.addPath("/Users/qinfuji/study/nxy_gitclient_test/**/*.*" , function(event , path){
       console.log("watch change file : " , path);
   });
}