f2e-node-server/hosts.js

a nodejs based file-system-server with easy-template-engine and several F2E-utils

"use strict";
var CONF = require("./nodeLib/config/conf"),
    fs = require('fs'),
    os = require('os'),
    _ = require('underscore');
//hosts写入
var hostsString = '127.0.0.1 ' + _.keys(CONF).join('\n127.0.0.1 '),
    hostsPath = os.type().match(/Windows/) ? 'C:\\Windows\\System32\\drivers\\etc\\hosts' : '/etc/hosts';
if( process.argv[2] === 'reset' ){
    fs.rename( hostsPath + '.bak', hostsPath, function(err){
        if(err){
            console.log( err );
        }else{
            console.log( 'reset hosts successfully' );
        }
    });
}else{
    fs.stat(hostsPath + '.bak', function(error, stat){
        if( stat && stat.isFile && stat.isFile() ){
            console.log( '\nhosts.bak is existed.  run: ' );
            console.warn( '  "node hosts reset"' );
        }else{
            var hostsBak = fs.readFileSync( hostsPath ).toString().replace(/[\n\r]?127\.0\.0\.1[\s\S]+/g, '');
            fs.rename(hostsPath, hostsPath + '.bak', function(err){
                if( err ){
                    console.log( err );
                }else{
                    fs.writeFile(hostsPath, hostsBak + '\n' + hostsString, function(err1){
                        if(err1){
                            console.log(err1);
                        }else{
                            console.log( '  hosts backup in hosts.bak and Instead of new local-hosts config' );
                        }
                    });
                }
            });
        }
    });
}