hx_watch/lib/old.js

none

/**
 * @description: 文件监听，执行cmd命令小工具
 * @author 王鸿兴
 * @version 1.0.1
 */

var childProcess = require('child_process');
var fs = require('fs');

var folder,cmd;

try {
	var config = fs.readFileSync('config.wh').toString();
	
	var array = config.match(/[a-z]*="[^\n";]*"(?=;)/g);
	var configObj = {}
	array.forEach(function(a){
		configObj[a.split('=')[0]] = trim(a.split('=')[1].replace(/(^")|("$)/g , '')) 
	})
	
	if(('folder' in configObj)&&('cmd' in configObj)){
		folder = configObj.folder;
		cmd = configObj.cmd;
		
		console.log('监听文件：'+folder)
		console.log('cmd命令：'+cmd)
		watchHandle()
	}else {
		throw new Error("配置文件错误")
	}
} catch (e) {
	console.log("请输入:文件夹名|命令(例：html|grunt build-html 回车)");
	getInput(function(result) {
		var data = result.split('|');
		if (data.length == 2) {
			folder = data[0].replace(/[\r\n]/g,'');
			cmd = data[1].replace(/[\r\n]/g,'');
			
			fs.writeFile('config.wh' , 'folder="'+folder+'";\r\ncmd="'+cmd+'";',function(){
				watchHandle()
			})
		} else {
			console.log("格式输入有误，请重试")
			fileListen()
		}
	})
}

var paths = [];
function watchHandle() {
	console.log("开始监听");
	//对改目录下文件进行遍历，监听;
	var changing = false;

	execCmd();

	paths = getAllFolderPath(folder);
	paths.forEach(function(path) {
		wathPath(path)
	});

	function wathPath(path){
		fs.watch(path, function(event, filename) {
			if (changing) return;

			if(event=="rename")check();

			changing = true;

			execCmd();

			setTimeout(function() {
				changing = false;
			}, 1000)
		}).on("error",function(){
			check();
		})
	}

	function check(){
		var npath = getAllFolderPath(folder);
		var newwatcher = [];
		npath.forEach(function(path){
			if(paths.indexOf(path)==-1){
				newwatcher.push(path);
			}
		});

		newwatcher.forEach(function(path){
			wathPath(path)
		});

		paths = npath.slice(0,npath.length);
	}
}

function execCmd(){
	console.log('执行' + cmd);
	childProcess.exec(cmd, function(err, stdout, stderr) {
		console.log(stdout)
	})
}

function trim(msg){
	return msg.replace(/(^\s*)|(\s*$)/g , "")
}

//进入输入状态
function getInput(callback) {
	process.stdin.resume();
	process.stdin.setEncoding('utf8');

	process.stdin.on('data', function(chunk) {
		process.stdin.pause();
		callback(chunk);
	});
}

//遍历文件夹的目录，获取所有文件夹目录
function getAllFolderPath(folderName) {
	var folderPath = [folderName + "/"];
	readFilePath(folderName)
	return folderPath;

	function readFilePath(fn) {
		fn += fn.charAt(fn.length - 1) == '/' ? '' : '/';

		try {
			var files = fs.readdirSync(fn);

			for (var i = 0; i < files.length; i++) {
				var stat = fs.lstatSync(fn + files[i])

				if (stat.isDirectory()) {
					folderPath.push(fn + files[i] + '/')
					readFilePath(fn + files[i])
				}
			}
		} catch (e) {
			console.log(e)
		}
	}
}