listen 0.0.0.0

.
-i устарела
2023-10-01 14:20:36 +03:00 · 2023-07-31 13:27:08 +03:00 · 2023-07-31 13:24:46 +03:00 · 2023-07-31 12:46:18 +03:00 · 2022-08-09 10:11:53 +08:00 · 2022-08-09 10:09:38 +08:00
135 changed files with 6690 additions and 6430 deletions
--- a/.gitattributes
+++ b/.gitattributes
@ -0,0 +1,3 @@
 static/js/lib/* linguist-vendored
 static/js/overwrite/* linguist-vendored
 *.min.js linguist-vendored
--- a/.gitignore
+++ b/.gitignore
@ -1,8 +1,6 @@
 /wide.exe
 /wide
 /static/user/admin/style.css
 /header
 /header.exe
@ -11,3 +9,4 @@
 /node_modules
 /nbproject
 /workspaces
 .idea
--- a/.header.json
+++ b/.header.json
@ -10,11 +10,12 @@
    ],
    "Excludes": [
        "static/js/lib/*",
-        "static/user/*"
+        "static/user/*",
 	"vendor/**"
    ],
    "UseDefaultExcludes": true,
    "Properties": {
-        "Year": "2014-2016",
+        "Year": "2014-present",
-        "Owner": "b3log.org & hacpai.com"
+        "Owner": "b3log.org"
    }
 }
--- a/.header.txt
+++ b/.header.txt
@ -4,7 +4,7 @@ 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
+    https://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,
--- a/.travis.yml
+++ b/.travis.yml
@ -1,11 +1,4 @@
 language: go
 go:
-  - 1.4
+  - 1.12
 before_install:
  - go get github.com/axw/gocov/gocov
  - go get github.com/mattn/goveralls
  - go get golang.org/x/tools/cmd/cover
 script:
  - ./coverage.sh
  - $HOME/gopath/bin/goveralls -coverprofile=profile.cov -service=travis-ci -repotoken W04Y4p452CDeI9gcsC8t5y217uHnUDFCb
--- a/23
+++ b/23
@ -1,23 +0,0 @@
 FROM golang:cross
 MAINTAINER Liang Ding <dl88250@gmail.com>
 ADD . /wide/gogogo/src/github.com/b3log/wide
 RUN tar zxf /wide/gogogo/src/github.com/b3log/wide/deps/golang.org.tar.gz -C /wide/gogogo/src/
 RUN tar zxf /wide/gogogo/src/github.com/b3log/wide/deps/github.com.tar.gz -C /wide/gogogo/src/
 RUN useradd wide && useradd runner
 ENV GOROOT /usr/src/go
 ENV GOPATH /wide/gogogo
 RUN go build github.com/go-fsnotify/fsnotify 
 RUN go build github.com/gorilla/sessions 
 RUN go build github.com/gorilla/websocket
 RUN go install github.com/visualfc/gotools github.com/nsf/gocode github.com/bradfitz/goimports
 WORKDIR /wide/gogogo/src/github.com/b3log/wide
 RUN go build -v
 EXPOSE 7070
--- a/2
+++ b/2
@ -192,7 +192,7 @@
   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
+       https://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,
--- a/README.md
+++ b/README.md
@ -1,180 +1,18 @@
-# [Wide](https://github.com/b3log/wide) [![Build Status](https://img.shields.io/travis/b3log/wide.svg?style=flat)](https://travis-ci.org/b3log/wide) [![Coverage Status](https://img.shields.io/coveralls/b3log/wide.svg?style=flat)](https://coveralls.io/r/b3log/wide) [![Apache License](http://img.shields.io/badge/license-apache2-orange.svg?style=flat)](http://www.apache.org/licenses/LICENSE-2.0) [![API Documentation](http://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](http://godoc.org/github.com/b3log/wide) [![Download](http://img.shields.io/badge/download-~4.3K-red.svg?style=flat)](http://pan.baidu.com/s/1dD3XwOT)
+* [Wide 用户指南](https://ld246.com/article/1538873544275)
-
+* [Wide 开发指南](https://ld246.com/article/1538876422995)
 _Have a [try](http://wide.b3log.org/signup) first, then [download](http://pan.baidu.com/s/1dD3XwOT) and setup it on your local area network, enjoy yourself!_
 先试试我们搭建好的[在线服务](http://wide.b3log.org/signup)，你可以在这里[下载](http://pan.baidu.com/s/1dD3XwOT)并在本地环境运行，然后邀请小伙伴们来玩吧！
 > * 关于 Wide 的产品定位，请看[这里](http://hacpai.com/article/1438407961481)，并欢迎参与讨论~
 > * 加入[**黑客派**](http://hacpai.com/register)，与其他程序员、设计师共同成长！
 ## Introduction
 A <b>W</b>eb-based <b>IDE</b> for Teams using Go programming language/Golang.
 ![Hello, 世界](https://cloud.githubusercontent.com/assets/873584/4606377/d0ca3c2a-521b-11e4-912c-d955ab05850b.png)
 ## Authors
 [Daniel](https://github.com/88250) and [Vanessa](https://github.com/Vanessa219) are the main authors of Wide, [here](https://github.com/b3log/wide/graphs/contributors) are all contributors.
 Wide 的主要作者是 [Daniel](https://github.com/88250) 与 [Vanessa](https://github.com/Vanessa219)，所有贡献者可以在[这里](https://github.com/b3log/wide/graphs/contributors)看到。
 ## Motivation
 * **Team** IDE:
  * _Safe and reliable_: the project source code stored on the server in real time, the developer's machine crashes without losing any source code 
  * _Unified environment_: server unified development environment configuration, the developer machine without any additional configuration 
  * _Out of the box_: 5 minutes to setup a server then open browser to develop, debug
  * _Version Control_: each developer has its own source code repository, easy sync with the trunk 
 * **Web-based** IDE:
  * Developer needs a browser only
  * Cross-platform, even on mobile devices
  * Easy to extend
  * Easy to integrate with other systems
  * For the geeks
 * A try for commercial-open source: versions customized for enterprises, close to their development work flows respectively
 * Currently more popular Go IDE has some defects or regrets: 
  * Text editor (vim/emacs/sublime/Atom, etc.): For the Go newbie is too complex 
  * Plug-in (goclipse, etc.): the need for the original IDE support, not professional
  * LiteIDE: no modern user interface :p
  * No team development experience 
 * There are a few of GO IDEs, and no one developed by Go itself, this is a nice try
 ## Features
 * [X] Code Highlight, Folding: Go/HTML/JavaScript/Markdown etc.
 * [X] Autocomplete: Go/HTML etc.
 * [X] Format: Go/HTML/JSON etc.
 * [X] Build & Run
 * [X] Multiplayer: a real team development experience
 * [X] Navigation, Jump to declaration, Find usages, File search etc.
 * [X] Shell: run command on the server
 * [X] Web development: HTML/JS/CSS editor with [Emmet](http://emmet.io) integrated
 * [X] Go tool: go get/install/fmt etc.
 * [X] File Import & Export
 * [X] Themes: editor and UI adjust, respectively
 * [X] Cross-Compilation
 * [ ] Debug
 * [ ] Git integration: git command on the web
 ## Screenshots
 * **Overview**
 ![Overview](https://cloud.githubusercontent.com/assets/873584/5450620/1d51831e-8543-11e4-930b-670871902425.png)
 * **Goto File**
 ![Goto File](https://cloud.githubusercontent.com/assets/873584/5450616/1d495da6-8543-11e4-9285-f9d9c60779ac.png)
 * **Autocomplete**
 ![Autocomplete](https://cloud.githubusercontent.com/assets/873584/5450619/1d4d5712-8543-11e4-8fe4-35dbc8348a6e.png)
 * **Theme**
-  ![4](https://cloud.githubusercontent.com/assets/873584/5450617/1d4c0826-8543-11e4-8b86-f79a4e41550a.png)
+![Theme](https://cloud.githubusercontent.com/assets/873584/5450617/1d4c0826-8543-11e4-8b86-f79a4e41550a.png)
 * **Show Expression Info**
 ![Show Expression Info](https://cloud.githubusercontent.com/assets/873584/5450618/1d4cd9f4-8543-11e4-950f-121bd3ff4a39.png)
 * **Build Error Info**
 ![Build Error Info](https://cloud.githubusercontent.com/assets/873584/5450632/3e51cccc-8543-11e4-8ca8-8d2427aa16b8.png)
 * **Git Clone**
  ![Git Clone](https://cloud.githubusercontent.com/assets/873584/6545235/2284f230-c5b7-11e4-985e-7e04367921b1.png)
 * **Cross-Compilation**
 ![Cross-Compilation](https://cloud.githubusercontent.com/assets/873584/10130037/226d75fc-65f7-11e5-94e4-25ee579ca175.png)
 * **Playground**
 ![Playground](https://cloud.githubusercontent.com/assets/873584/21209772/449ecfd2-c2b1-11e6-9aa6-a83477d9f269.gif)
 ## Architecture 
 ### Build & Run
 ![Build & Run](https://cloud.githubusercontent.com/assets/873584/4389219/3642bc62-43f3-11e4-8d1f-06d7aaf22784.png)
 * A browser tab corresponds to a Wide session
 * Execution output push via WebSocket
 Flow: 
 1. Browser sends ````Build```` request
 2. Server executes ````go build```` command via ````os/exec````<br/>
    2.1. Generates a executable file
 3. Browser sends ````Run```` request
 4. Server executes the file via ````os/exec````<br/>
    4.1. A running process<br/>
    4.2. Execution output push via WebSocket channel
 5. Browser renders with callback function ````ws.onmessage````
 ### Code Assist
 ![Code Assist](https://cloud.githubusercontent.com/assets/873584/4399135/3b80c21c-4463-11e4-8e94-7f7e8d12a4df.png)
 * Autocompletion
 * Find Usages/Jump To Declaration/etc.
 Flow: 
 1. Browser sends code assist request
 2. Handler gets user workspace of the request with HTTP session
 3. Server executes ````gocode````/````ide_stub(gotools)````<br/>
    3.1 Sets environment variables (e.g. ${GOPATH})<br/>
    3.2 ````gocode```` with ````lib-path```` parameter
 ## Documents
 * [用户指南](https://www.gitbook.com/book/88250/wide-user-guide)
 * [开发指南](https://www.gitbook.com/book/88250/wide-dev-guide)
 ## Setup
 ### Download Binary
 We have provided OS-specific executable binary as follows: 
 * linux-amd64/386
 * windows-amd64/386
 * darwin-amd64/386
 Download [HERE](http://pan.baidu.com/s/1dD3XwOT)!
 ### Build Wide for yourself
 1. [Download](https://github.com/b3log/wide/archive/master.zip) source or by `git clone https://github.com/b3log/wide`
 2. Get dependencies with 
   * `go get`
   * `go get github.com/visualfc/gotools github.com/nsf/gocode github.com/bradfitz/goimports`
 3. Compile wide with `go build` 
 ### Docker
 1. Get image: `sudo docker pull 88250/wide:latest`
 2. Run: `sudo docker run -p 127.0.0.1:7070:7070 88250/wide:latest ./wide -docker=true -channel=ws://127.0.0.1:7070`
 3. Open browser: http://127.0.0.1:7070
 ## Known Issues
 * [Shell is not available on Windows](https://github.com/b3log/wide/issues/32)
 * [Rename directory](https://github.com/b3log/wide/issues/251)
 ## Terms
 * This software is open sourced under the Apache License 2.0
 * You can not get rid of the "Powered by [B3log](http://b3log.org)" from any page, even which you made
 * If you want to use this software for commercial purpose, please mail to support@liuyun.io for a commercial license request
 * Copyright &copy; b3log.org, all rights reserved
 ## Credits
 Wide is made possible by the following open source projects.
 * [golang](http://golang.org)
 * [CodeMirror](https://github.com/marijnh/CodeMirror)
 * [zTree](https://github.com/zTree/zTree_v3) 
 * [LiteIDE](https://github.com/visualfc/liteide)
 * [gocode](https://github.com/nsf/gocode)
 * [Gorilla](https://github.com/gorilla)
 * [Docker](https://docker.com)
 ----
 <img src="https://cloud.githubusercontent.com/assets/873584/4606328/4e848b96-5219-11e4-8db1-fa12774b57b4.png" width="256px" />
--- a/TERMS.md
+++ b/TERMS.md
@ -1,4 +1,4 @@
 * This software is open sourced under the Apache License 2.0
-* You can not get rid of the "Powered by [B3log](http://b3log.org)" from any pages, even the pages are developed by you 
+* You can not get rid of the "Powered by [B3log](https://b3log.org)" from any pages, even the pages are developed by you
-* If you want to use this software for commercial purpose, please mail to support@liuyun.io for request a commercial license
+* If you want to use this software for commercial purpose, please mail to os@b3log.org for request a commercial license
 * Copyright (c) b3log.org, all rights reserved
--- a/conf/user.go
+++ b/conf/user.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -15,17 +15,13 @@
 package conf
 import (
 	"crypto/md5"
 	"crypto/sha1"
 	"encoding/hex"
 	"encoding/json"
 	"io/ioutil"
 	"os"
 	"path/filepath"
 	"regexp"
 	"strings"
 	"time"
 	"github.com/b3log/wide/util"
 )
 // Panel represents a UI panel.
@ -51,14 +47,15 @@ type LatestSessionContent struct {
 // User configuration.
 type User struct {
 	Id                    string
 	Name                  string
-	Password             string
+	Avatar                string
 	Salt                 string
 	Email                string
 	Gravatar             string // see http://gravatar.com
 	Workspace             string // the GOPATH of this user (maybe contain several paths splitted by os.PathListSeparator)
 	Locale                string
 	GoFormat              string
 	GoBuildArgsForLinux   string
 	GoBuildArgsForWindows string
 	GoBuildArgsForDarwin  string
 	FontFamily            string
 	FontSize              string
 	Theme                 string
@ -79,26 +76,7 @@ type editor struct {
 	TabSize    string
 }
-// NewUser creates a user with the specified username, password, email and workspace.
+// Save saves the user's configurations in conf/users/{userId}.json.
 func NewUser(username, password, email, workspace string) *User {
 	md5hash := md5.New()
 	md5hash.Write([]byte(email))
 	gravatar := hex.EncodeToString(md5hash.Sum(nil))
 	salt := util.Rand.String(16)
 	password = Salt(password, salt)
 	now := time.Now().UnixNano()
 	return &User{Name: username, Password: password, Salt: salt, Email: email, Gravatar: gravatar, Workspace: workspace,
 		Locale: Wide.Locale, GoFormat: "gofmt", FontFamily: "Helvetica", FontSize: "13px", Theme: "default",
 		Keymap:  "wide",
 		Created: now, Updated: now, Lived: now,
 		Editor: &editor{FontFamily: "Consolas, 'Courier New', monospace", FontSize: "inherit", LineHeight: "17px",
 			Theme: "wide", TabSize: "4"}}
 }
 // Save saves the user's configurations in conf/users/{username}.json.
 func (u *User) Save() bool {
 	bytes, err := json.MarshalIndent(u, "", "    ")
@ -109,12 +87,12 @@ func (u *User) Save() bool {
 	}
 	if "" == string(bytes) {
-		logger.Error("Truncated user [" + u.Name + "]")
+		logger.Error("Truncated user [" + u.Id + "]")
 		return false
 	}
-	if err = ioutil.WriteFile("conf/users/"+u.Name+".json", bytes, 0644); nil != err {
+	if err = ioutil.WriteFile(filepath.Join(Wide.Data, "users", u.Id+".json"), bytes, 0644); nil != err {
 		logger.Error(err)
 		return false
@ -123,34 +101,62 @@ func (u *User) Save() bool {
 	return true
 }
-// GetWorkspace gets workspace path of the user.
+// NewUser creates a user with the specified username and workspace.
 func NewUser(id, name, avatar, workspace string) *User {
 	now := time.Now().UnixNano()
 	return &User{Id: id, Name: name, Avatar: avatar, Workspace: workspace,
 		Locale: Wide.Locale, GoFormat: "gofmt",
 		GoBuildArgsForLinux: "", GoBuildArgsForWindows: "", GoBuildArgsForDarwin: "",
 		FontFamily: "Helvetica", FontSize: "13px", Theme: "default",
 		Keymap:  "wide",
 		Created: now, Updated: now, Lived: now,
 		Editor: &editor{FontFamily: "Consolas, 'Courier New', monospace", FontSize: "inherit", LineHeight: "17px",
 			Theme: "wide", TabSize: "4"}}
 }
 // WorkspacePath gets workspace path of the user.
 //
 // Compared to the use of Wide.Workspace, this function will be processed as follows:
 //  1. Replace {WD} variable with the actual directory path
 //  2. Replace ${GOPATH} with enviorment variable GOPATH
 //  3. Replace "/" with "\\" (Windows)
-func (u *User) GetWorkspace() string {
+func (u *User) WorkspacePath() string {
-	w := strings.Replace(u.Workspace, "{WD}", Wide.WD, 1)
+	w := u.Workspace
 	w = strings.Replace(w, "${GOPATH}", os.Getenv("GOPATH"), 1)
 	return filepath.FromSlash(w)
 }
 // BuildArgs get build args with the specified os.
 func (u *User) BuildArgs(os string) []string {
 	var tmp string
 	if os == "windows" {
 		tmp = u.GoBuildArgsForWindows
 	}
 	if os == "linux" {
 		tmp = u.GoBuildArgsForLinux
 	}
 	if os == "darwin" {
 		tmp = u.GoBuildArgsForDarwin
 	}
 	exp := regexp.MustCompile(`[^\s"']+|"([^"]*)"|'([^']*)'`)
 	ret := exp.FindAllString(tmp, -1)
 	for idx := range ret {
 		ret[idx] = strings.Replace(ret[idx], "\"", "", -1)
 	}
 	return ret
 }
 // GetOwner gets the user the specified path belongs to. Returns "" if not found.
 func GetOwner(path string) string {
 	for _, user := range Users {
-		if strings.HasPrefix(path, user.GetWorkspace()) {
+		if strings.HasPrefix(path, user.WorkspacePath()) {
-			return user.Name
+			return user.Id
 		}
 	}
 	return ""
 }
 // Salt salts the specified password with the specified salt.
 func Salt(password, salt string) string {
 	sha1hash := sha1.New()
 	sha1hash.Write([]byte(password + salt))
 	return hex.EncodeToString(sha1hash.Sum(nil))
 }
--- a/conf/users/admin.json
+++ b/conf/users/admin.json
@ -1,50 +0,0 @@
 {
    "Name": "admin",
    "Password": "d1bfca21893c908e64fabda01d71294b1ccdcaa7",
    "Salt": "dnoyeb",
    "Email": "",
    "Gravatar": "d41d8cd98f00b204e9800998ecf8427e",
    "Workspace": "${GOPATH}",
    "Locale": "en_US",
    "GoFormat": "gofmt",
    "FontFamily": "Helvetica",
    "FontSize": "13px",
    "Theme": "default",
    "Keymap": "wide",
    "Created": 1414080000000000000,
    "Updated": 1477750918395543731,
    "Lived": 1477756867409471881,
    "Editor": {
        "FontFamily": "Consolas, 'Courier New', monospace",
        "FontSize": "13px",
        "LineHeight": "17px",
        "Theme": "lesser-dark",
        "TabSize": "4"
    },
    "LatestSessionContent": {
        "fileTree": [
            "/Users/Vanessa/Work/GoGoGo/src",
            "/Users/Vanessa/Work/GoGoGo/src/github.com",
            "/Users/Vanessa/Work/GoGoGo/src/github.com/b3log",
            "/Users/Vanessa/Work/GoGoGo/src/github.com/b3log/wide"
        ],
        "files": [
            "/Users/Vanessa/Work/GoGoGo/src/github.com/b3log/wide/.gitignore"
        ],
        "currentFile": "/Users/Vanessa/Work/GoGoGo/src/github.com/b3log/wide/.gitignore",
        "layout": {
            "side": {
                "state": "normal",
                "size": 200
            },
            "sideRight": {
                "state": "normal",
                "size": 200
            },
            "bottom": {
                "state": "normal",
                "size": 100
            }
        }
    }
 }
--- a/conf/wide.go
+++ b/conf/wide.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -17,19 +17,17 @@ package conf
 import (
 	"encoding/json"
-	"io/ioutil"
+	"html/template"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"sort"
 	"strconv"
 	"strings"
 	"text/template"
 	"time"
-	"github.com/b3log/wide/event"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/log"
+	"github.com/88250/wide/event"
 	"github.com/b3log/wide/util"
 )
 const (
@ -39,43 +37,43 @@ const (
 	PathListSeparator = string(os.PathListSeparator)
 	// WideVersion holds the current Wide's version.
-	WideVersion = "1.5.2"
+	WideVersion = "1.6.0"
 	// CodeMirrorVer holds the current editor version.
 	CodeMirrorVer = "5.1"
 	// UserAgent represents HTTP client user agent.
 	UserAgent = "Wide/" + WideVersion + "; +https://github.com/88250/wide"
 	HelloWorld = `package main
 import "fmt"
 func main() {
-	fmt.Println("Hello, 世界")
+	fmt.Println("欢迎通过《边看边练 Go 系列》来学习 Go 语言 https://ld246.com/article/1437497122181")
 }
 `
 )
 // Configuration.
 type conf struct {
-	IP                    string // server ip, ${ip}
+	Server                string        // server
 	Port                  string // server port
 	Context               string // server context
 	Server                string // server host and port ({IP}:{Port})
 	StaticServer          string // static resources server scheme, host and port (http://{IP}:{Port})
 	LogLevel              string        // logging level: trace/debug/info/warn/error
-	Channel               string // channel (ws://{IP}:{Port})
+	Data                  string        // data directory
 	RuntimeMode           string        // runtime mode (dev/prod)
 	HTTPSessionMaxAge     int           // HTTP session max age (in seciond)
 	StaticResourceVersion string        // version of static resources
 	MaxProcs              int    // Go max procs
 	RuntimeMode           string // runtime mode (dev/prod)
 	WD                    string // current working direcitory, ${pwd}
 	Locale                string        // default locale
 	Playground            string // playground directory
 	UsersWorkspaces       string // users' workspaces directory (admin defaults to ${GOPATH}, others using this)
 	AllowRegister         bool   // allow register or not
 	Autocomplete          bool          // default autocomplete
 	SiteStatCode          template.HTML // site statistic code
 	ReadOnly              bool          // read-only mode
 	OAuthLoginURL         string
 	OAuthAccessTokenURL   string
 	OAuthUserInfoURL      string
 	OAuthClientID         string
 	OAuthClientSecret     string
 }
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 // Wide configurations.
 var Wide *conf
@ -83,21 +81,28 @@ var Wide *conf
 // configurations of users.
 var Users []*User
-// Indicates whether runs via Docker.
+// Indicates whether Docker is available.
 var Docker bool
-// Load loads the Wide configurations from wide.json and users' configurations from users/{username}.json.
+// Docker image to run user's program
-func Load(confPath, confIP, confPort, confServer, confLogLevel, confStaticServer, confContext, confChannel,
+const DockerImageGo = "golang"
 	confPlayground string, confDocker bool, confUsersWorkspaces string) {
 	// XXX: ugly args list....
-	initWide(confPath, confIP, confPort, confServer, confLogLevel, confStaticServer, confContext, confChannel,
+// Load loads the Wide configurations from wide.json and users' configurations from users/{userId}.json.
-		confPlayground, confDocker, confUsersWorkspaces)
+func Load(confPath, confData, confServer, confLogLevel, confReadOnly string, confSiteStatCode template.HTML) {
 	initWide(confPath, confData, confServer, confLogLevel, confReadOnly, confSiteStatCode)
 	initUsers()
 	cmd := exec.Command("docker", "version")
 	_, err := cmd.CombinedOutput()
 	if nil != err {
 		logger.Warnf("Not found 'docker' installed, running user's code will cause security problem")
 	} else {
 		Docker = true
 	}
 }
 func initUsers() {
-	f, err := os.Open("conf/users")
+	f, err := os.Open(Wide.Data + PathSeparator + "users")
 	if nil != err {
 		logger.Error(err)
@ -123,8 +128,7 @@ func initUsers() {
 		user := &User{}
-		bytes, _ := ioutil.ReadFile("conf/users/" + name)
+		bytes, _ := os.ReadFile(filepath.Join(Wide.Data, "users", name))
 		err := json.Unmarshal(bytes, user)
 		if err != nil {
 			logger.Errorf("Parses [%s] error: %v, skip loading this user", name, err)
@ -137,6 +141,17 @@ func initUsers() {
 			user.Keymap = "wide"
 		}
 		// Compatibility upgrade (1.5.3): https://github.com/b3log/wide/issues/308
 		//if "" == user.GoBuildArgsForLinux {
 		//	user.GoBuildArgsForLinux = "-i"
 		//}
 		//if "" == user.GoBuildArgsForWindows {
 		//	user.GoBuildArgsForWindows = "-i"
 		//}
 		//if "" == user.GoBuildArgsForDarwin {
 		//	user.GoBuildArgsForDarwin = "-i"
 		//}
 		Users = append(Users, user)
 	}
@ -144,9 +159,8 @@ func initUsers() {
 	initCustomizedConfs()
 }
-func initWide(confPath, confIP, confPort, confServer, confLogLevel, confStaticServer, confContext, confChannel,
+func initWide(confPath, confData, confServer, confLogLevel, confReadOnly string, confSiteStatCode template.HTML) {
-	confPlayground string, confDocker bool, confUsersWorkspaces string) {
+	bytes, err := os.ReadFile(confPath)
 	bytes, err := ioutil.ReadFile(confPath)
 	if nil != err {
 		logger.Error(err)
@ -162,102 +176,65 @@ func initWide(confPath, confIP, confPort, confServer, confLogLevel, confStaticSe
 		os.Exit(-1)
 	}
 	Wide.Autocomplete = true // default to true
 	// Logging Level
-	log.SetLevel(Wide.LogLevel)
+	gulu.Log.SetLevel(Wide.LogLevel)
 	if "" != confLogLevel {
 		Wide.LogLevel = confLogLevel
-		log.SetLevel(confLogLevel)
+		gulu.Log.SetLevel(confLogLevel)
 	}
 	logger.Debug("Conf: \n" + string(bytes))
 	// Working Directory
 	Wide.WD = util.OS.Pwd()
 	logger.Debugf("${pwd} [%s]", Wide.WD)
 	// User Home
-	home, err := util.OS.Home()
+	home, err := gulu.OS.Home()
 	if nil != err {
 		logger.Error("Can't get user's home, please report this issue to developer", err)
 		os.Exit(-1)
 	}
 	logger.Debugf("${user.home} [%s]", home)
-	// Playground Directory
+	// Data directory
-	Wide.Playground = strings.Replace(Wide.Playground, "${home}", home, 1)
+	if "" != confData {
-	if "" != confPlayground {
+		Wide.Data = confData
 		Wide.Playground = confPlayground
 	}
-
+	Wide.Data = strings.Replace(Wide.Data, "${home}", home, -1)
-	// Users' workspaces Directory
+	Wide.Data = filepath.Clean(Wide.Data)
-	Wide.UsersWorkspaces = strings.Replace(Wide.UsersWorkspaces, "${WD}", Wide.WD, 1)
+	if err := os.MkdirAll(Wide.Data+"/playground/", 0755); nil != err {
-	Wide.UsersWorkspaces = strings.Replace(Wide.UsersWorkspaces, "${home}", home, 1)
+		logger.Errorf("Create data directory [%s] error", err)
 	if "" != confUsersWorkspaces {
 		Wide.UsersWorkspaces = confUsersWorkspaces
 	}
 	Wide.UsersWorkspaces = filepath.Clean(Wide.UsersWorkspaces)
 	if !util.File.IsExist(Wide.Playground) {
 		if err := os.Mkdir(Wide.Playground, 0775); nil != err {
 			logger.Errorf("Create Playground [%s] error", err)
 		os.Exit(-1)
 	}
-	}
+	if err := os.MkdirAll(Wide.Data+"/users/", 0755); nil != err {
-
+		logger.Errorf("Create data directory [%s] error", err)
 	// IP
 	if "" != confIP {
 		Wide.IP = confIP
 	} else {
 		ip, err := util.Net.LocalIP()
 		if nil != err {
 			logger.Error(err)
 		os.Exit(-1)
 	}
 	if err := os.MkdirAll(Wide.Data+"/workspaces/", 0755); nil != err {
 		logger.Errorf("Create data directory [%s] error", err)
-		logger.Debugf("${ip} [%s]", ip)
+		os.Exit(-1)
 		Wide.IP = strings.Replace(Wide.IP, "${ip}", ip, 1)
 	}
 	if "" != confPort {
 		Wide.Port = confPort
 	}
 	// Docker flag
 	Docker = confDocker
 	// Server
 	Wide.Server = strings.Replace(Wide.Server, "{IP}", Wide.IP, 1)
 	Wide.Server = strings.Replace(Wide.Server, "{Port}", Wide.Port, 1)
 	if "" != confServer {
 		Wide.Server = confServer
 	}
-	// Static Server
+	if "" != confReadOnly {
-	Wide.StaticServer = strings.Replace(Wide.StaticServer, "{IP}", Wide.IP, 1)
+		Wide.ReadOnly, _ = strconv.ParseBool(confReadOnly)
 	Wide.StaticServer = strings.Replace(Wide.StaticServer, "{Port}", Wide.Port, 1)
 	if "" != confStaticServer {
 		Wide.StaticServer = confStaticServer
 	}
-	// Context
+	// SiteStatCode
-	if "" != confContext {
+	if "" != confSiteStatCode {
-		Wide.Context = confContext
+		Wide.SiteStatCode = confSiteStatCode
 	}
 	time := strconv.FormatInt(time.Now().UnixNano(), 10)
 	logger.Debugf("${time} [%s]", time)
 	Wide.StaticResourceVersion = strings.Replace(Wide.StaticResourceVersion, "${time}", time, 1)
 	// Channel
 	Wide.Channel = strings.Replace(Wide.Channel, "{IP}", Wide.IP, 1)
 	Wide.Channel = strings.Replace(Wide.Channel, "{Port}", Wide.Port, 1)
 	if "" != confChannel {
 		Wide.Channel = confChannel
 	}
 }
 // FixedTimeCheckEnv checks Wide runtime enviorment periodically (7 minutes).
@ -275,7 +252,7 @@ func FixedTimeCheckEnv() {
 }
 func checkEnv() {
-	defer util.Recover()
+	defer gulu.Panic.Recover(nil)
 	cmd := exec.Command("go", "version")
 	buf, err := cmd.CombinedOutput()
@ -292,16 +269,16 @@ func checkEnv() {
 		os.Exit(-1)
 	}
-	gocode := util.Go.GetExecutableInGOBIN("gocode")
+	gocode := gulu.Go.GetExecutableInGOBIN("gocode")
 	cmd = exec.Command(gocode)
 	_, err = cmd.Output()
 	if nil != err {
 		event.EventQueue <- &event.Event{Code: event.EvtCodeGocodeNotFound}
-		logger.Warnf("Not found gocode [%s], please install it with this command: go get github.com/nsf/gocode", gocode)
+		logger.Warnf("Not found gocode [%s], please install it with this command: go get github.com/stamblerre/gocode", gocode)
 	}
-	ideStub := util.Go.GetExecutableInGOBIN("gotools")
+	ideStub := gulu.Go.GetExecutableInGOBIN("gotools")
 	cmd = exec.Command(ideStub, "version")
 	_, err = cmd.Output()
 	if nil != err {
@ -311,11 +288,11 @@ func checkEnv() {
 	}
 }
-// GetUserWorkspace gets workspace path with the specified username, returns "" if not found.
+// GetUserWorkspace gets workspace path with the specified user id, returns "" if not found.
-func GetUserWorkspace(username string) string {
+func GetUserWorkspace(userId string) string {
 	for _, user := range Users {
-		if user.Name == username {
+		if user.Id == userId {
-			return user.GetWorkspace()
+			return user.WorkspacePath()
 		}
 	}
@ -323,14 +300,14 @@ func GetUserWorkspace(username string) string {
 }
 // GetGoFmt gets the path of Go format tool, returns "gofmt" if not found "goimports".
-func GetGoFmt(username string) string {
+func GetGoFmt(userId string) string {
 	for _, user := range Users {
-		if user.Name == username {
+		if user.Id == userId {
 			switch user.GoFormat {
 			case "gofmt":
 				return "gofmt"
 			case "goimports":
-				return util.Go.GetExecutableInGOBIN("goimports")
+				return gulu.Go.GetExecutableInGOBIN("goimports")
 			default:
 				logger.Errorf("Unsupported Go Format tool [%s]", user.GoFormat)
 				return "gofmt"
@ -341,15 +318,14 @@ func GetGoFmt(username string) string {
 	return "gofmt"
 }
-// GetUser gets configuration of the user specified by the given username, returns nil if not found.
+// GetUser gets configuration of the user specified by the given user id, returns nil if not found.
-func GetUser(username string) *User {
+func GetUser(id string) *User {
-	if "playground" == username { // reserved user for Playground
+	if "playground" == id { // reserved user for Playground
-		// mock it
+		return NewUser("playground", "playground", "", "")
 		return NewUser("playground", "", "", "")
 	}
 	for _, user := range Users {
-		if user.Name == username {
+		if user.Id == id {
 			return user
 		}
 	}
@ -360,17 +336,17 @@ func GetUser(username string) *User {
 // initCustomizedConfs initializes the user customized configurations.
 func initCustomizedConfs() {
 	for _, user := range Users {
-		UpdateCustomizedConf(user.Name)
+		UpdateCustomizedConf(user.Id)
 	}
 }
 // UpdateCustomizedConf creates (if not exists) or updates user customized configuration files.
 //
-//  1. /static/user/{username}/style.css
+//  1. /static/users/{userId}/style.css
-func UpdateCustomizedConf(username string) {
+func UpdateCustomizedConf(userId string) {
 	var u *User
 	for _, user := range Users { // maybe it is a beauty of the trade-off of the another world between design and implementation
-		if user.Name == username {
+		if user.Id == userId {
 			u = user
 		}
 	}
@ -388,8 +364,7 @@ func UpdateCustomizedConf(username string) {
 		os.Exit(-1)
 	}
-	wd := util.OS.Pwd()
+	dir := filepath.Clean(Wide.Data + "/static/users/" + userId)
 	dir := filepath.Clean(wd + "/static/user/" + u.Name)
 	if err := os.MkdirAll(dir, 0755); nil != err {
 		logger.Error(err)
@ -419,7 +394,7 @@ func initWorkspaceDirs() {
 	paths := []string{}
 	for _, user := range Users {
-		paths = append(paths, filepath.SplitList(user.GetWorkspace())...)
+		paths = append(paths, filepath.SplitList(user.WorkspacePath())...)
 	}
 	for _, path := range paths {
@ -442,7 +417,7 @@ func CreateWorkspaceDir(path string) {
 // createDir creates a directory on the path if it not exists.
 func createDir(path string) {
-	if !util.File.IsExist(path) {
+	if !gulu.File.IsExist(path) {
 		if err := os.MkdirAll(path, 0775); nil != err {
 			logger.Error(err)
--- a/conf/wide.json
+++ b/conf/wide.json
@ -1,19 +1,16 @@
 {
-    "IP": "${ip}",
+  "Server": "http://127.0.0.1:7070",
    "Port": "7070",
    "Context": "",
    "Server": "{IP}:{Port}",
    "StaticServer": "",
  "LogLevel": "debug",
-    "Channel": "ws://{IP}:{Port}",
+  "Data": "${home}/wide",
  "RuntimeMode": "prod",
  "HTTPSessionMaxAge": 86400,
  "StaticResourceVersion": "${time}",
-    "MaxProcs": 4,
+  "Locale": "zh_CN",
-    "RuntimeMode": "dev",
+  "SiteStatCode": "",
-    "WD": "${pwd}",
+  "ReadOnly": false,
-    "Locale": "en_US",
+  "OAuthLoginURL": "",
-    "Playground": "${home}/playground",
+  "OAuthAccessTokenURL": "",
-    "UsersWorkspaces": "${WD}/workspaces",
+  "OAuthUserInfoURL": "",
-    "AllowRegister": true,
+  "OAuthClientID": "",
-    "Autocomplete": true
+  "OAuthClientSecret": ""
 }
--- a/coverage.sh
+++ b/coverage.sh
@ -1,24 +0,0 @@
 #!/bin/bash
 # see https://gist.github.com/hailiang/0f22736320abe6be71ce for more details
 set -e
 # Run test coverage on each subdirectories and merge the coverage profile.
 echo "mode: count" > profile.cov
 # Standard go tooling behavior is to ignore dirs with leading underscors
 for dir in $(find . -maxdepth 10 -not -path './.git*' -not -path '*/_*' -type d);
 do
 if ls $dir/*.go &> /dev/null; then
    go test -covermode=count -coverprofile=$dir/profile.tmp $dir
    if [ -f $dir/profile.tmp ]
    then
        cat $dir/profile.tmp | tail -n +2 >> profile.cov
        rm $dir/profile.tmp
    fi
 fi
 done
 go tool cover -func profile.cov
--- a/deps/github.com.tar.gz
+++ b/deps/github.com.tar.gz
--- a/deps/golang.org.tar.gz
+++ b/deps/golang.org.tar.gz
--- a/doc/README.md
+++ b/doc/README.md
@ -1,2 +0,0 @@
 * [User Guide](https://www.gitbook.com/book/88250/wide-user-guide)
 * [Developer Guide](https://www.gitbook.com/book/88250/wide-dev-guide)
--- a/editor/editors.go
+++ b/editor/editors.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -25,129 +25,63 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
 	"time"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/file"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/log"
+	"github.com/88250/wide/file"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/session"
 	"github.com/b3log/wide/util"
 	"github.com/gorilla/websocket"
 )
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 // WSHandler handles request of creating editor channel.
 // XXX: NOT used at present
 func WSHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	sid := httpSession.Values["id"].(string)
 	conn, _ := websocket.Upgrade(w, r, nil, 1024, 1024)
 	editorChan := util.WSChannel{Sid: sid, Conn: conn, Request: r, Time: time.Now()}
 	ret := map[string]interface{}{"output": "Editor initialized", "cmd": "init-editor"}
 	err := editorChan.WriteJSON(&ret)
 	if nil != err {
 		return
 	}
 	session.EditorWS[sid] = &editorChan
 	logger.Tracef("Open a new [Editor] with session [%s], %d", sid, len(session.EditorWS))
 	args := map[string]interface{}{}
 	for {
 		if err := session.EditorWS[sid].ReadJSON(&args); err != nil {
 			return
 		}
 		code := args["code"].(string)
 		line := int(args["cursorLine"].(float64))
 		ch := int(args["cursorCh"].(float64))
 		offset := getCursorOffset(code, line, ch)
 		logger.Tracef("offset: %d", offset)
 		gocode := util.Go.GetExecutableInGOBIN("gocode")
 		argv := []string{"-f=json", "autocomplete", strconv.Itoa(offset)}
 		var output bytes.Buffer
 		cmd := exec.Command(gocode, argv...)
 		cmd.Stdout = &output
 		stdin, _ := cmd.StdinPipe()
 		cmd.Start()
 		stdin.Write([]byte(code))
 		stdin.Close()
 		cmd.Wait()
 		ret = map[string]interface{}{"output": string(output.Bytes()), "cmd": "autocomplete"}
 		if err := session.EditorWS[sid].WriteJSON(&ret); err != nil {
 			logger.Error("Editor WS ERROR: " + err.Error())
 			return
 		}
 	}
 }
 // AutocompleteHandler handles request of code autocompletion.
 func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
-	var args map[string]interface{}
+	if conf.Wide.ReadOnly {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
-	session, _ := session.HTTPSession.Get(r, "wide-session")
+	session, _ := session.HTTPSession.Get(r, session.CookieName)
 	if session.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := session.Values["username"].(string)
+	uid := session.Values["uid"].(string)
 	path := args["path"].(string)
 	fout, err := os.Create(path)
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	code := args["code"].(string)
 	fout.WriteString(code)
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	line := int(args["cursorLine"].(float64))
 	ch := int(args["cursorCh"].(float64))
 	offset := getCursorOffset(code, line, ch)
 	logger.Tracef("offset: %d", offset)
-	userWorkspace := conf.GetUserWorkspace(username)
+	userWorkspace := conf.GetUserWorkspace(uid)
 	workspaces := filepath.SplitList(userWorkspace)
 	libPath := ""
 	for _, workspace := range workspaces {
@ -158,8 +92,8 @@ func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
 	logger.Tracef("gocode set lib-path [%s]", libPath)
 	gocode := gulu.Go.GetExecutableInGOBIN("gocode")
 	// FIXME: using gocode set lib-path has some issues while accrossing workspaces
 	gocode := util.Go.GetExecutableInGOBIN("gocode")
 	exec.Command(gocode, []string{"set", "lib-path", libPath}...).Run()
 	argv := []string{"-f=json", "--in=" + path, "autocomplete", strconv.Itoa(offset)}
@ -168,7 +102,7 @@ func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
 	output, err := cmd.CombinedOutput()
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@ -179,16 +113,16 @@ func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
 // GetExprInfoHandler handles request of getting expression infomation.
 func GetExprInfoHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	session, _ := session.HTTPSession.Get(r, "wide-session")
+	session, _ := session.HTTPSession.Get(r, session.CookieName)
-	username := session.Values["username"].(string)
+	uid := session.Values["uid"].(string)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@ -201,7 +135,7 @@ func GetExprInfoHandler(w http.ResponseWriter, r *http.Request) {
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -211,7 +145,7 @@ func GetExprInfoHandler(w http.ResponseWriter, r *http.Request) {
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -223,24 +157,24 @@ func GetExprInfoHandler(w http.ResponseWriter, r *http.Request) {
 	logger.Tracef("offset [%d]", offset)
-	ideStub := util.Go.GetExecutableInGOBIN("gotools")
+	ideStub := gulu.Go.GetExecutableInGOBIN("gotools")
 	argv := []string{"types", "-pos", filename + ":" + strconv.Itoa(offset), "-info", "."}
 	cmd := exec.Command(ideStub, argv...)
 	cmd.Dir = curDir
-	setCmdEnv(cmd, username)
+	setCmdEnv(cmd, uid)
 	output, err := cmd.CombinedOutput()
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	exprInfo := strings.TrimSpace(string(output))
 	if "" == exprInfo {
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -250,21 +184,21 @@ func GetExprInfoHandler(w http.ResponseWriter, r *http.Request) {
 // FindDeclarationHandler handles request of finding declaration.
 func FindDeclarationHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	session, _ := session.HTTPSession.Get(r, "wide-session")
+	session, _ := session.HTTPSession.Get(r, session.CookieName)
 	if session.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := session.Values["username"].(string)
+	uid := session.Values["uid"].(string)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@ -277,7 +211,7 @@ func FindDeclarationHandler(w http.ResponseWriter, r *http.Request) {
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -287,7 +221,7 @@ func FindDeclarationHandler(w http.ResponseWriter, r *http.Request) {
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -299,24 +233,24 @@ func FindDeclarationHandler(w http.ResponseWriter, r *http.Request) {
 	logger.Tracef("offset [%d]", offset)
-	ideStub := util.Go.GetExecutableInGOBIN("gotools")
+	ideStub := gulu.Go.GetExecutableInGOBIN("gotools")
 	argv := []string{"types", "-pos", filename + ":" + strconv.Itoa(offset), "-def", "."}
 	cmd := exec.Command(ideStub, argv...)
 	cmd.Dir = curDir
-	setCmdEnv(cmd, username)
+	setCmdEnv(cmd, uid)
 	output, err := cmd.CombinedOutput()
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	found := strings.TrimSpace(string(output))
 	if "" == found {
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -338,22 +272,22 @@ func FindDeclarationHandler(w http.ResponseWriter, r *http.Request) {
 // FindUsagesHandler handles request of finding usages.
 func FindUsagesHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	session, _ := session.HTTPSession.Get(r, "wide-session")
+	session, _ := session.HTTPSession.Get(r, session.CookieName)
 	if session.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := session.Values["username"].(string)
+	uid := session.Values["uid"].(string)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@ -366,7 +300,7 @@ func FindUsagesHandler(w http.ResponseWriter, r *http.Request) {
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -376,7 +310,7 @@ func FindUsagesHandler(w http.ResponseWriter, r *http.Request) {
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -387,24 +321,24 @@ func FindUsagesHandler(w http.ResponseWriter, r *http.Request) {
 	offset := getCursorOffset(code, line, ch)
 	logger.Tracef("offset [%d]", offset)
-	ideStub := util.Go.GetExecutableInGOBIN("gotools")
+	ideStub := gulu.Go.GetExecutableInGOBIN("gotools")
 	argv := []string{"types", "-pos", filename + ":" + strconv.Itoa(offset), "-use", "."}
 	cmd := exec.Command(ideStub, argv...)
 	cmd.Dir = curDir
-	setCmdEnv(cmd, username)
+	setCmdEnv(cmd, uid)
 	output, err := cmd.CombinedOutput()
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	out := strings.TrimSpace(string(output))
 	if "" == out {
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -453,8 +387,8 @@ func getCursorOffset(code string, line, ch int) (offset int) {
 	return offset
 }
-func setCmdEnv(cmd *exec.Cmd, username string) {
+func setCmdEnv(cmd *exec.Cmd, userId string) {
-	userWorkspace := conf.GetUserWorkspace(username)
+	userWorkspace := conf.GetUserWorkspace(userId)
 	cmd.Env = append(cmd.Env,
 		"GOPATH="+userWorkspace,
--- a/editor/formatter.go
+++ b/editor/formatter.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -20,9 +20,9 @@ import (
 	"os"
 	"os/exec"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/session"
 )
 // GoFmtHandler handles request of formatting Go source code.
@ -31,30 +31,36 @@ import (
 //  1. gofmt
 //  2. goimports
 func GoFmtHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	session, _ := session.HTTPSession.Get(r, "wide-session")
+	if conf.Wide.ReadOnly {
 		result.Code = -1
 		result.Msg = "readonly mode"
 		return
 	}
 	session, _ := session.HTTPSession.Get(r, session.CookieName)
 	if session.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := session.Values["username"].(string)
+	uid := session.Values["uid"].(string)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	filePath := args["file"].(string)
-	if util.Go.IsAPI(filePath) {
+	if gulu.Go.IsAPI(filePath) {
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -63,7 +69,7 @@ func GoFmtHandler(w http.ResponseWriter, r *http.Request) {
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -73,7 +79,7 @@ func GoFmtHandler(w http.ResponseWriter, r *http.Request) {
 	fout.WriteString(code)
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -85,7 +91,7 @@ func GoFmtHandler(w http.ResponseWriter, r *http.Request) {
 	result.Data = data
-	fmt := conf.GetGoFmt(username)
+	fmt := conf.GetGoFmt(uid)
 	argv := []string{filePath}
 	cmd := exec.Command(fmt, argv...)
@ -94,7 +100,7 @@ func GoFmtHandler(w http.ResponseWriter, r *http.Request) {
 	output := string(bytes)
 	if "" == output {
 		// format error, returns the original content
-		result.Succ = true
+		result.Code = 0
 		return
 	}
@ -106,7 +112,7 @@ func GoFmtHandler(w http.ResponseWriter, r *http.Request) {
 	fout.WriteString(code)
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
--- a/event/events.go
+++ b/event/events.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -18,8 +18,7 @@ package event
 import (
 	"os"
-	"github.com/b3log/wide/log"
+	"github.com/88250/gulu"
 	"github.com/b3log/wide/util"
 )
 const (
@ -39,7 +38,7 @@ const (
 const maxQueueLength = 10
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 // Event represents an event.
 type Event struct {
@ -70,7 +69,7 @@ var UserEventQueues = queues{}
 // Load initializes the event handling.
 func Load() {
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		for event := range EventQueue {
 			logger.Debugf("Received a global event [code=%d]", event.Code)
@ -107,7 +106,7 @@ func (ueqs queues) New(sid string) *UserEventQueue {
 	ueqs[sid] = q
 	go func() { // start listening
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		for evt := range q.Queue {
 			logger.Debugf("Session [%s] received an event [%d]", sid, evt.Code)
--- a/file/decompress.go
+++ b/file/decompress.go
@ -1,57 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 package file
 import (
 	"encoding/json"
 	"net/http"
 	"path/filepath"
 	"github.com/b3log/wide/util"
 )
 // DecompressHandler handles request of decompressing zip/tar.gz.
 func DecompressHandler(w http.ResponseWriter, r *http.Request) {
 	result := util.NewResult()
 	defer util.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	path := args["path"].(string)
 	//	base := filepath.Base(path)
 	dir := filepath.Dir(path)
 	if !util.File.IsExist(path) {
 		result.Succ = false
 		result.Msg = "Can't find file [" + path + "] to descompress"
 		return
 	}
 	err := util.Zip.Unzip(path, dir)
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 }
--- a/file/exporter.go
+++ b/file/exporter.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -20,7 +20,7 @@ import (
 	"os"
 	"path/filepath"
-	"github.com/b3log/wide/util"
+	"github.com/88250/gulu"
 )
 // GetZipHandler handles request of retrieving zip file.
@ -34,7 +34,7 @@ func GetZipHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
-	if !util.File.IsExist(path) {
+	if !gulu.File.IsExist(path) {
 		http.Error(w, "Not Found", 404)
 		return
@ -51,13 +51,13 @@ func GetZipHandler(w http.ResponseWriter, r *http.Request) {
 // CreateZipHandler handles request of creating zip.
 func CreateZipHandler(w http.ResponseWriter, r *http.Request) {
-	data := util.NewResult()
+	data := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, data)
+	defer gulu.Ret.RetResult(w, r, data)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		data.Succ = false
+		data.Code = -1
 		return
 	}
@ -75,24 +75,24 @@ func CreateZipHandler(w http.ResponseWriter, r *http.Request) {
 	dir := filepath.Dir(path)
-	if !util.File.IsExist(path) {
+	if !gulu.File.IsExist(path) {
-		data.Succ = false
+		data.Code = -1
 		data.Msg = "Can't find file [" + path + "]"
 		return
 	}
 	zipPath := filepath.Join(dir, name)
-	zipFile, err := util.Zip.Create(zipPath + ".zip")
+	zipFile, err := gulu.Zip.Create(zipPath + ".zip")
 	if nil != err {
 		logger.Error(err)
-		data.Succ = false
+		data.Code = -1
 		return
 	}
 	defer zipFile.Close()
-	if util.File.IsDir(path) {
+	if gulu.File.IsDir(path) {
 		zipFile.AddDirectory(base, path)
 	} else {
 		zipFile.AddEntry(base, path)
--- a/file/files.go
+++ b/file/files.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -24,15 +24,14 @@ import (
 	"sort"
 	"strings"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/event"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/log"
+	"github.com/88250/wide/event"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/session"
 	"github.com/b3log/wide/util"
 )
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 // Node represents a file node in file tree.
 type Node struct {
@ -61,7 +60,7 @@ var apiNode *Node
 // initAPINode builds the Go API file node.
 func initAPINode() {
-	apiPath := util.Go.GetAPIPath()
+	apiPath := gulu.Go.GetAPIPath()
 	apiNode = &Node{Name: "Go API", Path: apiPath, IconSkin: "ico-ztree-dir-api ", Type: "d",
 		Creatable: false, Removable: false, IsGoAPI: true, Children: []*Node{}}
@ -74,18 +73,18 @@ func initAPINode() {
 // The Go API source code package also as a child node,
 // so that users can easily view the Go API source code in file tree.
 func GetFilesHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetGzResult(w, r, result)
+	defer gulu.Ret.RetGzResult(w, r, result)
-	userWorkspace := conf.GetUserWorkspace(username)
+	userWorkspace := conf.GetUserWorkspace(uid)
 	workspaces := filepath.SplitList(userWorkspace)
 	root := Node{Name: "root", Path: "", IconSkin: "ico-ztree-dir ", Type: "d", IsParent: true, Children: []*Node{}}
@ -123,18 +122,18 @@ func GetFilesHandler(w http.ResponseWriter, r *http.Request) {
 // RefreshDirectoryHandler handles request of refresh a directory of file tree.
 func RefreshDirectoryHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
 	r.ParseForm()
 	path := r.FormValue("path")
-	if !util.Go.IsAPI(path) && !session.CanAccess(username, path) {
+	if !gulu.Go.IsAPI(path) && !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
@ -156,37 +155,37 @@ func RefreshDirectoryHandler(w http.ResponseWriter, r *http.Request) {
 // GetFileHandler handles request of opening file by editor.
 func GetFileHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	path := args["path"].(string)
-	if !util.Go.IsAPI(path) && !session.CanAccess(username, path) {
+	if !gulu.Go.IsAPI(path) && !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	size := util.File.GetFileSize(path)
+	size := gulu.File.GetFileSize(path)
 	if size > 5242880 { // 5M
-		result.Succ = false
+		result.Code = -1
 		result.Msg = "This file is too large to open :("
 		return
@ -199,30 +198,30 @@ func GetFileHandler(w http.ResponseWriter, r *http.Request) {
 	extension := filepath.Ext(path)
-	if util.File.IsImg(extension) {
+	if gulu.File.IsImg(extension) {
 		// image file will be open in a browser tab
 		data["mode"] = "img"
-		username := conf.GetOwner(path)
+		userId := conf.GetOwner(path)
-		if "" == username {
+		if "" == userId {
-			logger.Warnf("The path [%s] has no owner")
+			logger.Warnf("The path [%s] has no owner", path)
 			data["path"] = ""
 			return
 		}
-		user := conf.GetUser(username)
+		user := conf.GetUser(uid)
-		data["path"] = "/workspace/" + user.Name + "/" + strings.Replace(path, user.GetWorkspace(), "", 1)
+		data["path"] = "/workspace/" + user.Name + "/" + strings.Replace(path, user.WorkspacePath(), "", 1)
 		return
 	}
 	content := string(buf)
-	if util.File.IsBinary(content) {
+	if gulu.File.IsBinary(content) {
-		result.Succ = false
+		result.Code = -1
 		result.Msg = "Can't open a binary file :("
 	} else {
 		data["content"] = content
@ -232,22 +231,28 @@ func GetFileHandler(w http.ResponseWriter, r *http.Request) {
 // SaveFileHandler handles request of saving file.
 func SaveFileHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	if conf.Wide.ReadOnly {
 		result.Code = -1
 		result.Msg = "readonly mode"
 		return
 	}
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -255,7 +260,7 @@ func SaveFileHandler(w http.ResponseWriter, r *http.Request) {
 	filePath := args["file"].(string)
 	sid := args["sid"].(string)
-	if util.Go.IsAPI(filePath) || !session.CanAccess(username, filePath) {
+	if gulu.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
@ -265,7 +270,7 @@ func SaveFileHandler(w http.ResponseWriter, r *http.Request) {
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -276,7 +281,7 @@ func SaveFileHandler(w http.ResponseWriter, r *http.Request) {
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		wSession := session.WideSessions.Get(sid)
 		wSession.EventQueue.Queue <- &event.Event{Code: event.EvtCodeServerInternalError, Sid: sid,
@ -288,29 +293,29 @@ func SaveFileHandler(w http.ResponseWriter, r *http.Request) {
 // NewFileHandler handles request of creating file or directory.
 func NewFileHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	path := args["path"].(string)
-	if util.Go.IsAPI(path) || !session.CanAccess(username, path) {
+	if gulu.Go.IsAPI(path) || !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
@ -322,7 +327,7 @@ func NewFileHandler(w http.ResponseWriter, r *http.Request) {
 	wSession := session.WideSessions.Get(sid)
 	if !createFile(path, fileType) {
-		result.Succ = false
+		result.Code = -1
 		wSession.EventQueue.Queue <- &event.Event{Code: event.EvtCodeServerInternalError, Sid: sid,
 			Data: "can't create file " + path}
@ -331,38 +336,38 @@ func NewFileHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	if "f" == fileType {
-		logger.Debugf("Created a file [%s] by user [%s]", path, wSession.Username)
+		logger.Debugf("Created a file [%s] by user [%s]", path, wSession.UserId)
 	} else {
-		logger.Debugf("Created a dir [%s] by user [%s]", path, wSession.Username)
+		logger.Debugf("Created a dir [%s] by user [%s]", path, wSession.UserId)
 	}
 }
 // RemoveFileHandler handles request of removing file or directory.
 func RemoveFileHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	path := args["path"].(string)
-	if util.Go.IsAPI(path) || !session.CanAccess(username, path) {
+	if gulu.Go.IsAPI(path) || !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
@ -373,7 +378,7 @@ func RemoveFileHandler(w http.ResponseWriter, r *http.Request) {
 	wSession := session.WideSessions.Get(sid)
 	if !removeFile(path) {
-		result.Succ = false
+		result.Code = -1
 		wSession.EventQueue.Queue <- &event.Event{Code: event.EvtCodeServerInternalError, Sid: sid,
 			Data: "can't remove file " + path}
@ -381,41 +386,41 @@ func RemoveFileHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
-	logger.Debugf("Removed a file [%s] by user [%s]", path, wSession.Username)
+	logger.Debugf("Removed a file [%s] by user [%s]", path, wSession.UserId)
 }
 // RenameFileHandler handles request of renaming file or directory.
 func RenameFileHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	oldPath := args["oldPath"].(string)
-	if util.Go.IsAPI(oldPath) ||
+	if gulu.Go.IsAPI(oldPath) ||
-		!session.CanAccess(username, oldPath) {
+		!session.CanAccess(uid, oldPath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	newPath := args["newPath"].(string)
-	if util.Go.IsAPI(newPath) || !session.CanAccess(username, newPath) {
+	if gulu.Go.IsAPI(newPath) || !session.CanAccess(uid, newPath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
@ -426,7 +431,7 @@ func RenameFileHandler(w http.ResponseWriter, r *http.Request) {
 	wSession := session.WideSessions.Get(sid)
 	if !renameFile(oldPath, newPath) {
-		result.Succ = false
+		result.Code = -1
 		wSession.EventQueue.Queue <- &event.Event{Code: event.EvtCodeServerInternalError, Sid: sid,
 			Data: "can't rename file " + oldPath}
@ -434,7 +439,7 @@ func RenameFileHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
-	logger.Debugf("Renamed a file [%s] to [%s] by user [%s]", oldPath, newPath, wSession.Username)
+	logger.Debugf("Renamed a file [%s] to [%s] by user [%s]", oldPath, newPath, wSession.UserId)
 }
 // Use to find results sorting.
@ -451,27 +456,27 @@ func (f foundPaths) Less(i, j int) bool { return f[i].score > f[j].score }
 // FindHandler handles request of find files under the specified directory with the specified filename pattern.
 func FindHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	path := args["path"].(string) // path of selected file in file tree
-	if !util.Go.IsAPI(path) && !session.CanAccess(username, path) {
+	if !gulu.Go.IsAPI(path) && !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
@ -479,10 +484,10 @@ func FindHandler(w http.ResponseWriter, r *http.Request) {
 	name := args["name"].(string)
-	userWorkspace := conf.GetUserWorkspace(username)
+	userWorkspace := conf.GetUserWorkspace(uid)
 	workspaces := filepath.SplitList(userWorkspace)
-	if "" != path && !util.File.IsDir(path) {
+	if "" != path && !gulu.File.IsDir(path) {
 		path = filepath.Dir(path)
 	}
@ -492,7 +497,7 @@ func FindHandler(w http.ResponseWriter, r *http.Request) {
 		rs := find(workspace+conf.PathSeparator+"src", name, []*string{})
 		for _, r := range rs {
-			substr := util.Str.LCS(path, *r)
+			substr := gulu.Str.LCS(path, *r)
 			founds = append(founds, &foundPath{Path: filepath.ToSlash(*r), score: len(substr)})
 		}
@ -505,21 +510,21 @@ func FindHandler(w http.ResponseWriter, r *http.Request) {
 // SearchTextHandler handles request of searching files under the specified directory with the specified keyword.
 func SearchTextHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -527,7 +532,7 @@ func SearchTextHandler(w http.ResponseWriter, r *http.Request) {
 	sid := args["sid"].(string)
 	wSession := session.WideSessions.Get(sid)
 	if nil == wSession {
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -536,7 +541,7 @@ func SearchTextHandler(w http.ResponseWriter, r *http.Request) {
 	dir := args["dir"].(string)
 	if "" == dir {
-		userWorkspace := conf.GetUserWorkspace(wSession.Username)
+		userWorkspace := conf.GetUserWorkspace(wSession.UserId)
 		workspaces := filepath.SplitList(userWorkspace)
 		dir = workspaces[0]
 	}
@ -545,7 +550,7 @@ func SearchTextHandler(w http.ResponseWriter, r *http.Request) {
 	text := args["text"].(string)
 	founds := []*Snippet{}
-	if util.File.IsDir(dir) {
+	if gulu.File.IsDir(dir) {
 		founds = search(dir, extension, text, []*Snippet{})
 	} else {
 		founds = searchInFile(dir, text)
@ -644,7 +649,7 @@ func listFiles(dirname string) []string {
 //
 // Refers to the zTree document for CSS class names.
 func getIconSkin(filenameExtension string) string {
-	if util.File.IsImg(filenameExtension) {
+	if gulu.File.IsImg(filenameExtension) {
 		return "ico-ztree-img "
 	}
@ -763,7 +768,7 @@ func find(dir, name string, results []*string) []*string {
 		path := dir + fname
 		if fileInfo.IsDir() {
-			if util.Str.Contains(fname, defaultExcludesFind) {
+			if gulu.Str.Contains(fname, defaultExcludesFind) {
 				continue
 			}
@ -836,7 +841,7 @@ func searchInFile(path string, text string) []*Snippet {
 	}
 	content := string(bytes)
-	if util.File.IsBinary(content) {
+	if gulu.File.IsBinary(content) {
 		return ret
 	}
--- a/file/importer.go
+++ b/file/importer.go
@ -1,77 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 package file
 import (
 	"io"
 	"mime/multipart"
 	"net/http"
 	"os"
 	"path/filepath"
 	"github.com/b3log/wide/util"
 )
 type fileInfo struct {
 	Name  string `json:"name"`
 	Type  string `json:"type"`
 	Error string `json:"error,omitempty"`
 }
 func handleUpload(p *multipart.Part, dir string) (fi *fileInfo) {
 	fi = &fileInfo{
 		Name: p.FileName(),
 		Type: p.Header.Get("Content-Type"),
 	}
 	path := filepath.Clean(dir + "/" + fi.Name)
 	f, _ := os.Create(path)
 	io.Copy(f, p)
 	f.Close()
 	return
 }
 func handleUploads(r *http.Request, dir string) (fileInfos []*fileInfo) {
 	fileInfos = make([]*fileInfo, 0)
 	mr, err := r.MultipartReader()
 	part, err := mr.NextPart()
 	for err == nil {
 		if name := part.FormName(); name != "" {
 			if part.FileName() != "" {
 				fileInfos = append(fileInfos, handleUpload(part, dir))
 			}
 		}
 		part, err = mr.NextPart()
 	}
 	return
 }
 // UploadHandler handles request of file upload.
 func UploadHandler(w http.ResponseWriter, r *http.Request) {
 	result := util.NewResult()
 	defer util.RetResult(w, r, result)
 	q := r.URL.Query()
 	dir := q["path"][0]
 	result.Data = handleUploads(r, dir)
 }
--- a/file/outline.go
+++ b/file/outline.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -23,7 +23,7 @@ import (
 	"net/http"
 	"strings"
-	"github.com/b3log/wide/util"
+	"github.com/88250/gulu"
 )
 type element struct {
@ -34,14 +34,14 @@ type element struct {
 // GetOutlineHandler gets outfile of a go file.
 func GetOutlineHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -51,7 +51,7 @@ func GetOutlineHandler(w http.ResponseWriter, r *http.Request) {
 	fset := token.NewFileSet()
 	f, err := parser.ParseFile(fset, "", code, 0)
 	if err != nil {
-		result.Succ = false
+		result.Code = -1
 		return
 	}
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,23 @@
 module github.com/88250/wide
 go 1.20
 require (
 	github.com/88250/gulu v1.1.0
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/gorilla/sessions v1.2.0
 	github.com/gorilla/websocket v1.4.2
 	github.com/parnurzeal/gorequest v0.2.16
 )
 require (
 	github.com/davidebianchi/go-jsonclient v1.5.0 // indirect
 	github.com/elazarl/goproxy v0.0.0-20200426045556-49ad98f6dac1 // indirect
 	github.com/gorilla/securecookie v1.1.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/smartystreets/goconvey v1.6.4 // indirect
 	golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e // indirect
 	golang.org/x/sys v0.0.0-20200408040146-ea54a3c99b9b // indirect
 	golang.org/x/text v0.3.2 // indirect
 	moul.io/http2curl v1.0.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,44 @@
 github.com/88250/gulu v1.1.0 h1:aU8HncW1XNssT1insCOz6rvmTUDrtsDwSnzeqTEqNFA=
 github.com/88250/gulu v1.1.0/go.mod h1:a2POIziN+QFeNT4Mj7FHH2lz1HEaFlMRF6wPE0NHM4U=
 github.com/davidebianchi/go-jsonclient v1.5.0 h1:PVDunAF/6c30D2SSx711efsrUP3hhml+uGT6oD3lzVY=
 github.com/davidebianchi/go-jsonclient v1.5.0/go.mod h1:lXd/hkx23H590Dod74j5GsmpgxF8RIAGZDt1P5+2mqo=
 github.com/elazarl/goproxy v0.0.0-20200426045556-49ad98f6dac1 h1:TEmChtx8+IeOghiySC8kQIr0JZOdKUmRmmkuRDuYs3E=
 github.com/elazarl/goproxy v0.0.0-20200426045556-49ad98f6dac1/go.mod h1:Ro8st/ElPeALwNFlcTpWmkr6IoMFfkjXAvTHpevnDsM=
 github.com/elazarl/goproxy/ext v0.0.0-20190711103511-473e67f1d7d2/go.mod h1:gNh8nYJoAm43RfaxurUnxr+N1PwuFV3ZMl/efxlIlY8=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
 github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
 github.com/gorilla/sessions v1.2.0 h1:S7P+1Hm5V/AT9cjEcUD5uDaQSX0OE577aCXgoaKpYbQ=
 github.com/gorilla/sessions v1.2.0/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/parnurzeal/gorequest v0.2.16 h1:T/5x+/4BT+nj+3eSknXmCTnEVGSzFzPGdpqmUVVZXHQ=
 github.com/parnurzeal/gorequest v0.2.16/go.mod h1:3Kh2QUMJoqw3icWAecsyzkpY7UzRfDhbRdTjtNwNiUE=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/rogpeppe/go-charset v0.0.0-20180617210344-2471d30d28b4/go.mod h1:qgYeAmZ5ZIpBWTGllZSQnw97Dj+woV0toclVaRGI8pc=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e h1:3G+cUijn7XD+S4eJFddp53Pv7+slrESplyjG25HgL+k=
 golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200408040146-ea54a3c99b9b h1:h03Ur1RlPrGTjua4koYdpGl8W0eYo8p1uI9w7RPlkdk=
 golang.org/x/sys v0.0.0-20200408040146-ea54a3c99b9b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 moul.io/http2curl v1.0.0 h1:6XwpyZOYsgZJrU8exnG87ncVkU1FVCcTRpwzOkTDUi8=
 moul.io/http2curl v1.0.0/go.mod h1:f6cULg+e4Md/oW1cYmwW4IWQOVl2lGbmCNGOHvzX2kE=
--- a/gulpfile.js
+++ b/gulpfile.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2015, b3log.org
+ * Copyright (c) 2014-2018, b3log.org
 *
 * 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
+ *     https://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,
@ -18,49 +18,57 @@
 * @file frontend tool.
 *
 * @author <a href="mailto:liliyuan@fangstar.net">Liyuan Li</a>
- * @version 0.1.0.0, Dec 15, 2015 
+ * @version 0.2.0.0, Oct 5, 2018
 */
-var gulp = require("gulp");
+var gulp = require('gulp')
-var concat = require('gulp-concat');
+var concat = require('gulp-concat')
-var minifyCSS = require('gulp-minify-css');
+var cleanCSS = require('gulp-clean-css')
-var uglify = require('gulp-uglify');
+var uglify = require('gulp-uglify')
-var sourcemaps = require("gulp-sourcemaps");
+var sourcemaps = require('gulp-sourcemaps')
-gulp.task('cc', function () {
+function minLibCSS () {
  // css
-    var cssLibs = ['./static/js/lib/jquery-layout/layout-default-latest.css',
+  var cssLibs = [
    './static/js/lib/jquery-layout/layout-default-latest.css',
    './static/js/lib/codemirror-5.1/codemirror.css',
    './static/js/lib/codemirror-5.1/addon/hint/show-hint.css',
    './static/js/lib/codemirror-5.1/addon/lint/lint.css',
    './static/js/lib/codemirror-5.1/addon/fold/foldgutter.css',
    './static/js/lib/codemirror-5.1/addon/dialog/dialog.css',
-        './static/js/overwrite/codemirror/theme/*.css'];
+    './static/js/overwrite/codemirror/theme/*.css']
-    gulp.src(cssLibs)
+  return gulp.src(cssLibs).
-            .pipe(minifyCSS())
+    pipe(cleanCSS()).
-            .pipe(concat('lib.min.css'))
+    pipe(concat('lib.min.css')).
-            .pipe(gulp.dest('./static/css/'));
+    pipe(gulp.dest('./static/css/'))
 }
-    gulp.src('./static/js/lib/ztree/zTreeStyle.css')
+function minZTreeStyleCSS () {
-            .pipe(minifyCSS())
+  return gulp.src('./static/js/lib/ztree/zTreeStyle.css').
-            .pipe(concat('zTreeStyle.min.css'))
+    pipe(cleanCSS()).
-            .pipe(gulp.dest('./static/js/lib/ztree/'));
+    pipe(concat('zTreeStyle.min.css')).
    pipe(gulp.dest('./static/js/lib/ztree/'))
 }
-    var cssWide = ['./static/css/dialog.css',
+function minWideCSS () {
  var cssWide = [
    './static/css/dialog.css',
    './static/css/base.css',
    './static/css/wide.css',
    './static/css/side.css',
    './static/css/start.css',
-        './static/css/about.css'
+    './static/css/about.css',
-    ];
+  ]
    gulp.src(cssWide)
            .pipe(minifyCSS())
            .pipe(concat('wide.min.css'))
            .pipe(gulp.dest('./static/css/'));
  return gulp.src(cssWide).
    pipe(cleanCSS()).
    pipe(concat('wide.min.css')).
    pipe(gulp.dest('./static/css/'))
 }
 function minLibJS () {
  // js
-    var jsLibs = ['./static/js/lib/jquery-2.1.1.min.js',
+  var jsLibs = [
    './static/js/lib/jquery-2.1.1.min.js',
    './static/js/lib/jquery-ui.min.js',
    './static/js/lib/jquery-layout/jquery.layout-latest.js',
    './static/js/lib/reconnecting-websocket.js',
@ -93,8 +101,8 @@ gulp.task('cc', function () {
    './static/js/lib/codemirror-5.1/addon/fold/xml-fold.js',
    './static/js/lib/codemirror-5.1/addon/fold/markdown-fold.js',
    './static/js/lib/codemirror-5.1/addon/fold/comment-fold.js',
-        './static/js/lib/codemirror-5.1/addon/fold/mode/loadmode.js',
+    './static/js/lib/codemirror-5.1/addon/mode/loadmode.js',
-        './static/js/lib/codemirror-5.1/addon/fold/comment/comment.js',
+    './static/js/lib/codemirror-5.1/addon/comment/comment.js',
    './static/js/lib/codemirror-5.1/mode/meta.js',
    './static/js/lib/codemirror-5.1/mode/go/go.js',
    './static/js/lib/codemirror-5.1/mode/clike/clike.js',
@ -107,13 +115,16 @@ gulp.task('cc', function () {
    './static/js/lib/codemirror-5.1/mode/sql/sql.js',
    './static/js/lib/codemirror-5.1/keymap/vim.js',
    './static/js/lib/lint/json-lint.js',
-        './static/js/lib/lint/go-lint.js'];
+    './static/js/lib/lint/go-lint.js']
-    gulp.src(jsLibs)
+  return gulp.src(jsLibs).
-            .pipe(uglify())
+    pipe(uglify()).
-            .pipe(concat('lib.min.js'))
+    pipe(concat('lib.min.js')).
-            .pipe(gulp.dest('./static/js/'));
+    pipe(gulp.dest('./static/js/'))
 }
-    var jsWide = ['./static/js/tabs.js',
+function minWideJS () {
  var jsWide = [
    './static/js/tabs.js',
    './static/js/tabs.js',
    './static/js/dialog.js',
    './static/js/editors.js',
@ -124,12 +135,16 @@ gulp.task('cc', function () {
    './static/js/menu.js',
    './static/js/windows.js',
    './static/js/hotkeys.js',
-        './static/js/bottomGroup.js'
+    './static/js/bottomGroup.js',
-    ];
+  ]
-    gulp.src(jsWide)
+  return gulp.src(jsWide).
-            .pipe(sourcemaps.init())
+    pipe(sourcemaps.init()).
-            .pipe(uglify())
+    pipe(uglify()).
-            .pipe(concat('wide.min.js'))
+    pipe(concat('wide.min.js')).
-            .pipe(sourcemaps.write("."))
+    pipe(sourcemaps.write('.')).
-            .pipe(gulp.dest('./static/js/'));
+    pipe(gulp.dest('./static/js/'))
-});
+}
 gulp.task('default',
  gulp.series(
    gulp.parallel(minLibCSS, minZTreeStyleCSS, minWideCSS, minLibJS, minWideJS)))
--- a/i18n/en_US.json
+++ b/i18n/en_US.json
@ -1,7 +1,7 @@
 {
    "colon": ": ",
    "wide": "Wide",
-    "wide_title": "Team development, anytime, anywhere",
+    "wide_title": "Playing golang, anytime, anywhere",
    "cancel": "Cancel",
    "file": "File",
    "login": "Login",
@ -28,7 +28,6 @@
    "close_all_files": "Close All",
    "save_all_files": "Save All",
    "format": "Format",
    "goget": "go get",
    "goinstall": "go install",
    "build": "Build",
    "build_n_run": "Build&Run",
@ -102,11 +101,6 @@
    "start-install": "START [go install]",
    "install-succ": "[go install] SUCCESS",
    "install-error": "[go install] ERROR",
    "start-get": "START [go get]",
    "get-succ": "[go get] SUCCESS",
    "get-error": "[go get] ERROR",
    "start-git_clone": "START [git clone]",
    "git_clone-done": "[git clone] DONE",
    "check_version": "Checking update",
    "new_version_available": "new version available",
    "go_env": "Go",
@ -120,7 +114,6 @@
    "team": "Team",
    "sing_up_error": "Sign Up Error",
    "user_name_ruler": "Username only by az, AZ, 0-9, _ consisting of a length of 16",
    "invalid_email": "Invalid Email",
    "password_no_match": "Password doesn't match the confirmation",
    "discard": "Discard",
    "close": "Close",
@ -139,7 +132,6 @@
    "clearOutput": "Clear Output",
    "export": "Export",
    "refresh": "Refresh",
    "import": "Import",
    "theme": "Theme",
    "tab_size": "Tab Size",
    "copy_file_path": "Copy File Path",
@ -158,11 +150,8 @@
    "source": "Source",
    "toggle_comment": "Toggle Comment",
    "find_in_files": "Find in Files",
    "email": "Email",
    "no_empty": "Can not Empty!",
    "change_avatar": "Avatar modify go",
    "open": "Open",
    "pricing": "Pricing",
    "search_no_match": "No matching files were found.",
    "outline": "Outline",
    "govet": "go vet",
@ -172,12 +161,11 @@
    "restore_outline": "Restore Outline",
    "share": "Share",
    "url": "URL",
    "short_url": "Short URL",
    "embeded": "Embeded",
    "git_clone": "Git Clone",
    "terms": "Terms",
    "download": "Download",
    "decompress": "Decompress",
    "keymap": "Keymap",
-    "resize": "Resize"
+    "resize": "Resize",
    "sponsor": "Sponsor"
 }
--- a/i18n/ja_JP.json
+++ b/i18n/ja_JP.json
@ -1,7 +1,7 @@
 {
    "colon": "：",
    "wide": "Wide",
-    "wide_title": "チーム開発、いつでも、どこでも",
+    "wide_title": "いつでも、どこでもゴランをプレイする",
    "cancel": "取消",
    "file": "ファイル",
    "login": "ログイン",
@ -28,7 +28,6 @@
    "close_all_files": "全てのファイルを閉じる",
    "save_all_files": "全てを保存",
    "format": "フォーマット",
    "goget": "go get",
    "goinstall": "go install",
    "build": "ビルド",
    "build_n_run": "ビルド実行",
@ -102,11 +101,6 @@
    "start-install": "[go install] 開始",
    "install-succ": "[go install] 成功",
    "install-error": "[go install] 失敗",
    "start-get": "[go get] 開始",
    "get-succ": "[go get] 成功",
    "get-error": "[go get] 失敗",
    "start-git_clone": "[git clone] 開始",
    "git_clone-done": "[git clone] 終わった",
    "check_version": "更新をチェック中",
    "new_version_available": "新しいバージョンがあります",
    "go_env": "Go",
@ -120,7 +114,6 @@
    "team": "チーム",
    "sing_up_error": "登録に失敗しました",
    "user_name_ruler": "16の長さからなる_ AZ、AZ、0-9、によってユーザ名のみ",
    "invalid_email": "無効な電子メール",
    "password_no_match": "一貫性のないパスワード入力",
    "discard": "あきらめる",
    "close": "クローズ",
@ -139,7 +132,6 @@
    "clearOutput": "空の出力",
    "export": "輸出",
    "refresh": "リフレッシュ",
    "import": "インポート",
    "theme": "テーマ",
    "tab_size": "Tab サイズ",
    "copy_file_path": "ファイルパスをコピー",
@ -158,26 +150,22 @@
    "source": "ソース",
    "toggle_comment": "トグルコメント",
    "find_in_files": "ファイルから検索",
    "email": "Eメール",
    "no_empty": "空ではありません",
    "change_avatar": "アバターの変更は行く",
    "open": "オープン",
    "pricing": "价格",
    "search_no_match": "一致するファイルが見つかりませんでした。",
    "outline": "アウトライン",
    "govet": "go vet",
-    "start-vet": "START [go vet]",
+    "start-vet": "[go vet] 開始",
-    "vet-succ": "[go vet] SUCCESS",
+    "vet-succ": "[go vet] 成功",
-    "vet-error": "[go vet] ERROR",
+    "vet-error": "[go vet] 失敗",
    "restore_outline": "アウトラインを復元",
    "share": "シェア",
    "url": "リンク",
    "short_url": "ショートリンク",
    "embeded": "埋め込む",
    "git_clone": "Git クローン",
    "terms": "利用規約",
    "download": "ダウンロード",
    "decompress": "解凍する",
    "keymap": "キーマップ",
-    "resize": "サイズ変更"
+    "resize": "サイズ変更",
    "sponsor": "スポンサー"
 }
--- a/i18n/ko_KR.json
+++ b/i18n/ko_KR.json
@ -1,7 +1,7 @@
 {
    "colon": "：",
    "wide": "Wide",
-    "wide_title": "언제 어디서나, 모두의 개발환경.",
+    "wide_title": "언제 어디서나 골란 놀기",
    "cancel": "취소",
    "file": "문서",
    "login": "로그인",
@ -28,7 +28,6 @@
    "close_all_files": "모두 닫기",
    "save_all_files": "일괄저장",
    "format": "포멧",
    "goget": "go get",
    "goinstall": "go install",
    "build": "빌드",
    "build_n_run": "빌드후실행",
@ -102,11 +101,6 @@
    "start-install": "시작 [go install]",
    "install-succ": "[go install] 성공",
    "install-error": "[go install] 실패",
    "start-get": "시작 [go get]",
    "get-succ": "[go get] 성공",
    "get-error": "[go get] 실패",
    "start-git_clone": "시작 [git clone]",
    "git_clone-done": "[git clone] 완성",
    "check_version": "최신버전검색중",
    "new_version_available": "최신업데이트 사용 가능",
    "go_env": "Go 환경",
@ -120,7 +114,6 @@
    "team": "단체",
    "sing_up_error": "가입실패",
    "user_name_ruler": "아이디는 16글자 이하이며 a-z, A-Z, 0-9, _ 만 가능합니다，",
    "invalid_email": "유효하지 않은 email주소",
    "password_no_match": "비밀번호 오류",
    "discard": "취소",
    "close": "닫기",
@ -139,7 +132,6 @@
    "clearOutput": "ouput 클리어",
    "export": "내보내기",
    "refresh": "새로고침",
    "import": "가져오기",
    "theme": "주제",
    "tab_size": "Tab 크기",
    "copy_file_path": "경로복사",
@ -158,26 +150,22 @@
    "source": "소스",
    "toggle_comment": "주석",
    "find_in_files": "문서에서 찾기",
    "email": "이메일",
    "no_empty": "값을 입력해 주세요.",
    "change_avatar": "아이콘변경은 여기로.",
    "open": "열기",
    "pricing": "가격",
    "search_no_match": "해당 문서를 찾지 못하였습니다.",
    "outline": "주제",
    "govet": "go vet",
-    "start-vet": "START [go vet]",
+    "start-vet": "시작 [go vet]",
-    "vet-succ": "[go vet] SUCCESS",
+    "vet-succ": "[go vet] 성공",
-    "vet-error": "[go vet] ERROR",
+    "vet-error": "[go vet] 실패",
    "restore_outline": "주제복구",
    "share": "공유",
    "url": "하이퍼링크",
    "short_url": "짧은 링크",
    "embeded": "삽입",
    "git_clone": "Git clone",
    "terms": "사용계약",
    "download": "다운로드",
    "decompress": "압축풀기",
    "keymap": "단축키",
-    "resize": "크기조절"
+    "resize": "크기조절",
    "sponsor": "후원사"
 }
--- a/i18n/locales.go
+++ b/i18n/locales.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -17,16 +17,15 @@ package i18n
 import (
 	"encoding/json"
 	"io/ioutil"
 	"os"
 	"sort"
 	"strings"
-	"github.com/b3log/wide/log"
+	"github.com/88250/gulu"
 )
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 // Locale.
 type locale struct {
@ -44,6 +43,10 @@ func Load() {
 	names, _ := f.Readdirnames(-1)
 	f.Close()
 	if len(Locales) == len(names)-1 {
 		return
 	}
 	for _, name := range names {
 		if !strings.HasSuffix(name, ".json") {
 			continue
@ -55,7 +58,7 @@ func Load() {
 }
 func load(localeStr string) {
-	bytes, err := ioutil.ReadFile("i18n/" + localeStr + ".json")
+	bytes, err := os.ReadFile("i18n/" + localeStr + ".json")
 	if nil != err {
 		logger.Error(err)
--- a/i18n/zh_CN.json
+++ b/i18n/zh_CN.json
@ -1,7 +1,7 @@
 {
    "colon": "：",
    "wide": "Wide",
-    "wide_title": "团队开发，随时随地",
+    "wide_title": "随时随地玩 golang",
    "cancel": "取消",
    "file": "文件",
    "login": "登录",
@ -28,7 +28,6 @@
    "close_all_files": "关闭所有文件",
    "save_all_files": "保存所有文件",
    "format": "格式化",
    "goget": "go get",
    "goinstall": "go install",
    "build": "构建",
    "build_n_run": "构建并运行",
@ -102,11 +101,6 @@
    "start-install": "开始 [go install]",
    "install-succ": "[go install] 成功",
    "install-error": "[go install] 失败",
    "start-get": "开始 [go get]",
    "get-succ": "[go get] 成功",
    "get-error": "[go get] 失败",
    "start-git_clone": "开始 [git clone]",
    "git_clone-done": "[git clone] 完成",
    "check_version": "正在检查更新",
    "new_version_available": "新版本可用",
    "go_env": "Go 环境",
@ -120,7 +114,6 @@
    "team": "团队",
    "sing_up_error": "注册失败",
    "user_name_ruler": "用户名只能由 a-z, A-Z, 0-9, _ 组成，长度为16",
    "invalid_email": "无效的电子邮件",
    "password_no_match": "密码输入不一致",
    "discard": "放弃",
    "close": "关闭",
@ -139,7 +132,6 @@
    "clearOutput": "清空输出",
    "export": "导出",
    "refresh": "刷新",
    "import": "导入",
    "theme": "主题",
    "tab_size": "Tab 大小",
    "copy_file_path": "复制文件路径",
@ -158,26 +150,22 @@
    "source": "源码",
    "toggle_comment": "注释",
    "find_in_files": "在文件中查找",
    "email": "电子邮件",
    "no_empty": "不能为空",
    "change_avatar": "头像修改请到",
    "open": "打开",
    "pricing": "价格",
    "search_no_match": "没有发现匹配的文件。",
    "outline": "大纲",
    "govet": "go vet",
-    "start-vet": "START [go vet]",
+    "start-vet": "开始 [go vet]",
-    "vet-succ": "[go vet] SUCCESS",
+    "vet-succ": "[go vet] 成功",
-    "vet-error": "[go vet] ERROR",
+    "vet-error": "[go vet] 失败",
    "restore_outline": "恢复大纲",
    "share": "分享",
    "url": "链接",
    "short_url": "短链接",
    "embeded": "嵌入",
    "git_clone": "Git 克隆",
    "terms": "使用条款",
    "download": "下载",
    "decompress": "解压缩",
    "keymap": "快捷键",
-    "resize": "调整大小"
+    "resize": "调整大小",
    "sponsor": "赞助"
 }
--- a/i18n/zh_TW.json
+++ b/i18n/zh_TW.json
@ -1,7 +1,7 @@
 {
    "colon": "：",
    "wide": "Wide",
-    "wide_title": "團隊開發，隨時隨地",
+    "wide_title": "隨時隨地玩 golang",
    "cancel": "取消",
    "file": "檔案",
    "login": "登入",
@ -28,7 +28,6 @@
    "close_all_files": "關閉所有檔案",
    "save_all_files": "儲存所有檔案",
    "format": "格式化",
    "goget": "go get",
    "goinstall": "go install",
    "build": "編譯",
    "build_n_run": "編譯並執行",
@ -102,11 +101,6 @@
    "start-install": "開始 [go install]",
    "install-succ": "[go install] 成功",
    "install-error": "[go install] 失敗",
    "start-get": "開始 [go get]",
    "get-succ": "[go get] 成功",
    "get-error": "[go get] 失敗",
    "start-git_clone": "開始 [git clone]",
    "git_clone-done": "[git clone] 完成",
    "check_version": "正在檢查更新",
    "new_version_available": "可用新版本",
    "go_env": "Go 環境",
@ -120,7 +114,6 @@
    "team": "團隊",
    "sing_up_error": "註冊失敗",
    "user_name_ruler": "帳號只能由 az, AZ, 0-9, _ 組成，長度為16",
    "invalid_email": "無效的電子郵件",
    "password_no_match": "密碼輸入不一致",
    "discard": "捨棄",
    "close": "關閉",
@ -139,7 +132,6 @@
    "clearOutput": "清空輸出",
    "export": "導出",
    "refresh": "刷新",
    "import": "導入",
    "theme": "主題",
    "tab_size": "Tab 大小",
    "copy_file_path": "複製檔案位置",
@ -158,11 +150,8 @@
    "source": "原始碼",
    "toggle_comment": "註解",
    "find_in_files": "在文件中尋找",
    "email": "電子郵件",
    "no_empty": "不能為空",
    "change_avatar": "修改頭像請到",
    "open": "開啟",
    "pricing": "價格",
    "search_no_match": "沒有發現匹配的文件。",
    "outline": "大綱",
    "govet": "go vet",
@ -172,12 +161,11 @@
    "restore_outline": "恢復大綱",
    "share": "分享",
    "url": "連結",
    "short_url": "短網址",
    "embeded": "嵌入",
    "git_clone": "Git Clone",
    "terms": "使用條款",
    "download": "下載",
    "decompress": "解壓縮",
    "keymap": "快速鍵",
-    "resize": "調整大小"
+    "resize": "調整大小",
    "sponsor": "贊助"
 }
--- a/log/logs.go
+++ b/log/logs.go
@ -1,217 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 // Package log includes logging related manipulations.
 //
 //  log.SetLevel("debug")
 // 	logger := log.NewLogger(os.Stdout)
 //
 //  logger.Trace("trace message)
 // 	logger.Debug("debug message")
 // 	logger.Info("info message")
 // 	logger.Warn("warning message")
 // 	logger.Error("error message")
 //
 //	logger.Errorf("formatted %s message", "error")
 package log
 import (
 	"fmt"
 	"io"
 	stdlog "log"
 	"strings"
 )
 // Logging level.
 const (
 	Off = iota
 	Trace
 	Debug
 	Info
 	Warn
 	Error
 )
 // all loggers.
 var loggers []*Logger
 // the global default logging level, it will be used for creating logger.
 var logLevel = Debug
 // Logger represents a simple logger with level.
 // The underlying logger is the standard Go logging "log".
 type Logger struct {
 	level  int
 	logger *stdlog.Logger
 }
 // NewLogger creates a logger.
 func NewLogger(out io.Writer) *Logger {
 	ret := &Logger{level: logLevel, logger: stdlog.New(out, "", stdlog.Ldate|stdlog.Ltime|stdlog.Lshortfile)}
 	loggers = append(loggers, ret)
 	return ret
 }
 // SetLevel sets the logging level of all loggers.
 func SetLevel(level string) {
 	logLevel = getLevel(level)
 	for _, l := range loggers {
 		l.SetLevel(level)
 	}
 }
 // getLevel gets logging level int value corresponding to the specified level.
 func getLevel(level string) int {
 	level = strings.ToLower(level)
 	switch level {
 	case "off":
 		return Off
 	case "trace":
 		return Trace
 	case "debug":
 		return Debug
 	case "info":
 		return Info
 	case "warn":
 		return Warn
 	case "error":
 		return Error
 	default:
 		return Info
 	}
 }
 // SetLevel sets the logging level of a logger.
 func (l *Logger) SetLevel(level string) {
 	l.level = getLevel(level)
 }
 // IsTraceEnabled determines whether the trace level is enabled.
 func (l *Logger) IsTraceEnabled() bool {
 	return l.level <= Trace
 }
 // IsDebugEnabled determines whether the debug level is enabled.
 func (l *Logger) IsDebugEnabled() bool {
 	return l.level <= Debug
 }
 // IsWarnEnabled determines whether the debug level is enabled.
 func (l *Logger) IsWarnEnabled() bool {
 	return l.level <= Warn
 }
 // Trace prints trace level message.
 func (l *Logger) Trace(v ...interface{}) {
 	if Trace < l.level {
 		return
 	}
 	l.logger.SetPrefix("T ")
 	l.logger.Output(2, fmt.Sprint(v...))
 }
 // Tracef prints trace level message with format.
 func (l *Logger) Tracef(format string, v ...interface{}) {
 	if Trace < l.level {
 		return
 	}
 	l.logger.SetPrefix("T ")
 	l.logger.Output(2, fmt.Sprintf(format, v...))
 }
 // Debug prints debug level message.
 func (l *Logger) Debug(v ...interface{}) {
 	if Debug < l.level {
 		return
 	}
 	l.logger.SetPrefix("D ")
 	l.logger.Output(2, fmt.Sprint(v...))
 }
 // Debugf prints debug level message with format.
 func (l *Logger) Debugf(format string, v ...interface{}) {
 	if Debug < l.level {
 		return
 	}
 	l.logger.SetPrefix("D ")
 	l.logger.Output(2, fmt.Sprintf(format, v...))
 }
 // Info prints info level message.
 func (l *Logger) Info(v ...interface{}) {
 	if Info < l.level {
 		return
 	}
 	l.logger.SetPrefix("I ")
 	l.logger.Output(2, fmt.Sprint(v...))
 }
 // Infof prints info level message with format.
 func (l *Logger) Infof(format string, v ...interface{}) {
 	if Info < l.level {
 		return
 	}
 	l.logger.SetPrefix("I ")
 	l.logger.Output(2, fmt.Sprintf(format, v...))
 }
 // Warn prints warning level message.
 func (l *Logger) Warn(v ...interface{}) {
 	if Warn < l.level {
 		return
 	}
 	l.logger.SetPrefix("W ")
 	l.logger.Output(2, fmt.Sprint(v...))
 }
 // Warn prints warning level message with format.
 func (l *Logger) Warnf(format string, v ...interface{}) {
 	if Warn < l.level {
 		return
 	}
 	l.logger.SetPrefix("W ")
 	l.logger.Output(2, fmt.Sprintf(format, v...))
 }
 // Error prints error level message.
 func (l *Logger) Error(v ...interface{}) {
 	if Error < l.level {
 		return
 	}
 	l.logger.SetPrefix("E ")
 	l.logger.Output(2, fmt.Sprint(v...))
 }
 // Errorf prints error level message with format.
 func (l *Logger) Errorf(format string, v ...interface{}) {
 	if Error < l.level {
 		return
 	}
 	l.logger.SetPrefix("E ")
 	l.logger.Output(2, fmt.Sprintf(format, v...))
 }
--- a/log/logs_test.go
+++ b/log/logs_test.go
@ -1,169 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 package log
 import (
 	"os"
 	"testing"
 )
 // Logger.
 var logger = NewLogger(os.Stdout)
 func TestSetLevel(t *testing.T) {
 	SetLevel("trace")
 }
 func TestTrace(t *testing.T) {
 	logger.SetLevel("trace")
 	logger.Trace("trace")
 	logger.SetLevel("off")
 	logger.Trace("trace")
 }
 func TestTracef(t *testing.T) {
 	logger.SetLevel("trace")
 	logger.Tracef("tracef")
 	logger.SetLevel("off")
 	logger.Tracef("tracef")
 }
 func TestDebug(t *testing.T) {
 	logger.SetLevel("debug")
 	logger.Debug("debug")
 	logger.SetLevel("off")
 	logger.Debug("debug")
 }
 func TestDebugf(t *testing.T) {
 	logger.SetLevel("debug")
 	logger.Debugf("debugf")
 	logger.SetLevel("off")
 	logger.Debug("debug")
 }
 func TestInfo(t *testing.T) {
 	logger.SetLevel("info")
 	logger.Info("info")
 	logger.SetLevel("off")
 	logger.Info("info")
 }
 func TestInfof(t *testing.T) {
 	logger.SetLevel("info")
 	logger.Infof("infof")
 	logger.SetLevel("off")
 	logger.Infof("infof")
 }
 func TestWarn(t *testing.T) {
 	logger.SetLevel("warn")
 	logger.Warn("warn")
 	logger.SetLevel("off")
 	logger.Warn("warn")
 }
 func TestWarnf(t *testing.T) {
 	logger.SetLevel("warn")
 	logger.Warnf("warnf")
 	logger.SetLevel("off")
 	logger.Warnf("warnf")
 }
 func TestError(t *testing.T) {
 	logger.SetLevel("error")
 	logger.Error("error")
 	logger.SetLevel("off")
 	logger.Error("error")
 }
 func TestErrorf(t *testing.T) {
 	logger.SetLevel("error")
 	logger.Errorf("errorf")
 	logger.SetLevel("off")
 	logger.Errorf("errorf")
 }
 func TestGetLevel(t *testing.T) {
 	if getLevel("trace") != Trace {
 		t.FailNow()
 		return
 	}
 	if getLevel("debug") != Debug {
 		t.FailNow()
 		return
 	}
 	if getLevel("info") != Info {
 		t.FailNow()
 		return
 	}
 	if getLevel("warn") != Warn {
 		t.FailNow()
 		return
 	}
 	if getLevel("error") != Error {
 		t.FailNow()
 		return
 	}
 }
 func TestLoggerSetLevel(t *testing.T) {
 	logger.SetLevel("trace")
 	if logger.level != Trace {
 		t.FailNow()
 		return
 	}
 }
 func TestIsTraceEnabled(t *testing.T) {
 	logger.SetLevel("trace")
 	if !logger.IsTraceEnabled() {
 		t.FailNow()
 		return
 	}
 }
 func TestIsDebugEnabled(t *testing.T) {
 	logger.SetLevel("debug")
 	if !logger.IsDebugEnabled() {
 		t.FailNow()
 		return
 	}
 }
 func TestIsWarnEnabled(t *testing.T) {
 	logger.SetLevel("warn")
 	if !logger.IsWarnEnabled() {
 		t.FailNow()
 		return
 	}
 }
--- a/main.go
+++ b/main.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -23,171 +23,142 @@ import (
 	"net/http"
 	_ "net/http/pprof"
 	"os"
 	"os/signal"
 	"runtime"
 	"strings"
 	"syscall"
 	"time"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/editor"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/event"
+	"github.com/88250/wide/editor"
-	"github.com/b3log/wide/file"
+	"github.com/88250/wide/event"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/file"
-	"github.com/b3log/wide/log"
+	"github.com/88250/wide/i18n"
-	"github.com/b3log/wide/notification"
+	"github.com/88250/wide/notification"
-	"github.com/b3log/wide/output"
+	"github.com/88250/wide/output"
-	"github.com/b3log/wide/playground"
+	"github.com/88250/wide/playground"
-	"github.com/b3log/wide/scm/git"
+	"github.com/88250/wide/session"
 	"github.com/b3log/wide/session"
 	"github.com/b3log/wide/util"
 )
 // Logger
-var logger *log.Logger
+var logger *gulu.Logger
 // The only one init function in Wide.
 func init() {
 	confPath := flag.String("conf", "conf/wide.json", "path of wide.json")
-	confIP := flag.String("ip", "", "this will overwrite Wide.IP if specified")
+	confData := flag.String("data", "", "path of data dir")
 	confPort := flag.String("port", "", "this will overwrite Wide.Port if specified")
 	confServer := flag.String("server", "", "this will overwrite Wide.Server if specified")
 	confLogLevel := flag.String("log_level", "", "this will overwrite Wide.LogLevel if specified")
-	confStaticServer := flag.String("static_server", "", "this will overwrite Wide.StaticServer if specified")
+	confReadOnly := flag.String("readonly", "", "this will overrite Wide.ReadOnly if specified")
-	confContext := flag.String("context", "", "this will overwrite Wide.Context if specified")
+	confSiteStatCode := flag.String("site_stat_code", "", "this will overrite Wide.SiteStatCode if specified")
 	confChannel := flag.String("channel", "", "this will overwrite Wide.Channel if specified")
 	confStat := flag.Bool("stat", false, "whether report statistics periodically")
 	confDocker := flag.Bool("docker", false, "whether run in a docker container")
 	confPlayground := flag.String("playground", "", "this will overwrite Wide.Playground if specified")
 	confUsersWorkspaces := flag.String("users_workspaces", "", "this will overwrite Wide.UsersWorkspaces if specified")
 	flag.Parse()
-	log.SetLevel("warn")
+	gulu.Log.SetLevel("warn")
-	logger = log.NewLogger(os.Stdout)
+	logger = gulu.Log.NewLogger(os.Stdout)
-	wd := util.OS.Pwd()
+	//wd := gulu.OS.Pwd()
-	if strings.HasPrefix(wd, os.TempDir()) {
+	//if strings.HasPrefix(wd, os.TempDir()) {
-		logger.Error("Don't run Wide in OS' temp directory or with `go run`")
+	//	logger.Error("Don't run Wide in OS' temp directory or with `go run`")
-
+	//
-		os.Exit(-1)
+	//	os.Exit(-1)
-	}
+	//}
 	i18n.Load()
 	event.Load()
-
+	conf.Load(*confPath, *confData, *confServer, *confLogLevel, *confReadOnly, template.HTML(*confSiteStatCode))
 	conf.Load(*confPath, *confIP, *confPort, *confServer, *confLogLevel, *confStaticServer, *confContext, *confChannel,
 		*confPlayground, *confDocker, *confUsersWorkspaces)
 	conf.FixedTimeCheckEnv()
 	session.FixedTimeSave()
 	session.FixedTimeRelease()
 	if *confStat {
 	session.FixedTimeReport()
 	}
-	logger.Debug("host ["+runtime.Version()+", "+runtime.GOOS+"_"+runtime.GOARCH+"], cross-compilation ",
+	logger.Debug("host [" + runtime.Version() + ", " + runtime.GOOS + "_" + runtime.GOARCH + "]")
 		util.Go.GetCrossPlatforms())
 }
 // Main.
 func main() {
 	runtime.GOMAXPROCS(conf.Wide.MaxProcs)
 	initMime()
 	handleSignal()
 	// IDE
-	http.HandleFunc(conf.Wide.Context+"/", handlerGzWrapper(indexHandler))
+	http.HandleFunc("/", handlerGzWrapper(indexHandler))
-	http.HandleFunc(conf.Wide.Context+"/start", handlerWrapper(startHandler))
+	http.HandleFunc("/start", handlerWrapper(startHandler))
-	http.HandleFunc(conf.Wide.Context+"/about", handlerWrapper(aboutHandler))
+	http.HandleFunc("/about", handlerWrapper(aboutHandler))
-	http.HandleFunc(conf.Wide.Context+"/keyboard_shortcuts", handlerWrapper(keyboardShortcutsHandler))
+	http.HandleFunc("/keyboard_shortcuts", handlerWrapper(keyboardShortcutsHandler))
 	// static resources
-	http.Handle(conf.Wide.Context+"/static/", http.StripPrefix(conf.Wide.Context+"/static/", http.FileServer(http.Dir("static"))))
+	http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))
-	serveSingle("/favicon.ico", "./static/favicon.ico")
+	http.Handle("/static/users/", http.StripPrefix("/static/", http.FileServer(http.Dir(conf.Wide.Data+"/static"))))
 	serveSingle("/favicon.ico", "./static/images/favicon.png")
-	// workspaces
+	// oauth
-	for _, user := range conf.Users {
+	http.HandleFunc("/login/redirect", session.LoginRedirectHandler)
-		http.Handle(conf.Wide.Context+"/workspace/"+user.Name+"/",
+	http.HandleFunc("/login/callback", session.LoginCallbackHandler)
 			http.StripPrefix(conf.Wide.Context+"/workspace/"+user.Name+"/", http.FileServer(http.Dir(user.GetWorkspace()))))
 	}
 	// session
-	http.HandleFunc(conf.Wide.Context+"/session/ws", handlerWrapper(session.WSHandler))
+	http.HandleFunc("/session/ws", handlerWrapper(session.WSHandler))
-	http.HandleFunc(conf.Wide.Context+"/session/save", handlerWrapper(session.SaveContentHandler))
+	http.HandleFunc("/session/save", handlerWrapper(session.SaveContentHandler))
 	// run
-	http.HandleFunc(conf.Wide.Context+"/build", handlerWrapper(output.BuildHandler))
+	http.HandleFunc("/build", handlerWrapper(output.BuildHandler))
-	http.HandleFunc(conf.Wide.Context+"/run", handlerWrapper(output.RunHandler))
+	http.HandleFunc("/run", handlerWrapper(output.RunHandler))
-	http.HandleFunc(conf.Wide.Context+"/stop", handlerWrapper(output.StopHandler))
+	http.HandleFunc("/stop", handlerWrapper(output.StopHandler))
-	http.HandleFunc(conf.Wide.Context+"/go/test", handlerWrapper(output.GoTestHandler))
+	http.HandleFunc("/go/test", handlerWrapper(output.GoTestHandler))
-	http.HandleFunc(conf.Wide.Context+"/go/vet", handlerWrapper(output.GoVetHandler))
+	http.HandleFunc("/go/vet", handlerWrapper(output.GoVetHandler))
-	http.HandleFunc(conf.Wide.Context+"/go/get", handlerWrapper(output.GoGetHandler))
+	http.HandleFunc("/go/install", handlerWrapper(output.GoInstallHandler))
-	http.HandleFunc(conf.Wide.Context+"/go/install", handlerWrapper(output.GoInstallHandler))
+	http.HandleFunc("/output/ws", handlerWrapper(output.WSHandler))
 	http.HandleFunc(conf.Wide.Context+"/output/ws", handlerWrapper(output.WSHandler))
 	// cross-compilation
-	http.HandleFunc(conf.Wide.Context+"/cross", handlerWrapper(output.CrossCompilationHandler))
+	http.HandleFunc("/cross", handlerWrapper(output.CrossCompilationHandler))
 	// file tree
-	http.HandleFunc(conf.Wide.Context+"/files", handlerWrapper(file.GetFilesHandler))
+	http.HandleFunc("/files", handlerWrapper(file.GetFilesHandler))
-	http.HandleFunc(conf.Wide.Context+"/file/refresh", handlerWrapper(file.RefreshDirectoryHandler))
+	http.HandleFunc("/file/refresh", handlerWrapper(file.RefreshDirectoryHandler))
-	http.HandleFunc(conf.Wide.Context+"/file", handlerWrapper(file.GetFileHandler))
+	http.HandleFunc("/file", handlerWrapper(file.GetFileHandler))
-	http.HandleFunc(conf.Wide.Context+"/file/save", handlerWrapper(file.SaveFileHandler))
+	http.HandleFunc("/file/save", handlerWrapper(file.SaveFileHandler))
-	http.HandleFunc(conf.Wide.Context+"/file/new", handlerWrapper(file.NewFileHandler))
+	http.HandleFunc("/file/new", handlerWrapper(file.NewFileHandler))
-	http.HandleFunc(conf.Wide.Context+"/file/remove", handlerWrapper(file.RemoveFileHandler))
+	http.HandleFunc("/file/remove", handlerWrapper(file.RemoveFileHandler))
-	http.HandleFunc(conf.Wide.Context+"/file/rename", handlerWrapper(file.RenameFileHandler))
+	http.HandleFunc("/file/rename", handlerWrapper(file.RenameFileHandler))
-	http.HandleFunc(conf.Wide.Context+"/file/search/text", handlerWrapper(file.SearchTextHandler))
+	http.HandleFunc("/file/search/text", handlerWrapper(file.SearchTextHandler))
-	http.HandleFunc(conf.Wide.Context+"/file/find/name", handlerWrapper(file.FindHandler))
+	http.HandleFunc("/file/find/name", handlerWrapper(file.FindHandler))
 	// outline
-	http.HandleFunc(conf.Wide.Context+"/outline", handlerWrapper(file.GetOutlineHandler))
+	http.HandleFunc("/outline", handlerWrapper(file.GetOutlineHandler))
-	// file export/import
+	// file export
-	http.HandleFunc(conf.Wide.Context+"/file/zip/new", handlerWrapper(file.CreateZipHandler))
+	http.HandleFunc("/file/zip/new", handlerWrapper(file.CreateZipHandler))
-	http.HandleFunc(conf.Wide.Context+"/file/zip", handlerWrapper(file.GetZipHandler))
+	http.HandleFunc("/file/zip", handlerWrapper(file.GetZipHandler))
 	http.HandleFunc(conf.Wide.Context+"/file/upload", handlerWrapper(file.UploadHandler))
 	http.HandleFunc(conf.Wide.Context+"/file/decompress", handlerWrapper(file.DecompressHandler))
 	// editor
-	http.HandleFunc(conf.Wide.Context+"/editor/ws", handlerWrapper(editor.WSHandler))
+	http.HandleFunc("/go/fmt", handlerWrapper(editor.GoFmtHandler))
-	http.HandleFunc(conf.Wide.Context+"/go/fmt", handlerWrapper(editor.GoFmtHandler))
+	http.HandleFunc("/autocomplete", handlerWrapper(editor.AutocompleteHandler))
-	http.HandleFunc(conf.Wide.Context+"/autocomplete", handlerWrapper(editor.AutocompleteHandler))
+	http.HandleFunc("/exprinfo", handlerWrapper(editor.GetExprInfoHandler))
-	http.HandleFunc(conf.Wide.Context+"/exprinfo", handlerWrapper(editor.GetExprInfoHandler))
+	http.HandleFunc("/find/decl", handlerWrapper(editor.FindDeclarationHandler))
-	http.HandleFunc(conf.Wide.Context+"/find/decl", handlerWrapper(editor.FindDeclarationHandler))
+	http.HandleFunc("/find/usages", handlerWrapper(editor.FindUsagesHandler))
 	http.HandleFunc(conf.Wide.Context+"/find/usages", handlerWrapper(editor.FindUsagesHandler))
 	// shell
 	// http.HandleFunc(conf.Wide.Context+"/shell/ws", handlerWrapper(shell.WSHandler))
 	// http.HandleFunc(conf.Wide.Context+"/shell", handlerWrapper(shell.IndexHandler))
 	// notification
-	http.HandleFunc(conf.Wide.Context+"/notification/ws", handlerWrapper(notification.WSHandler))
+	http.HandleFunc("/notification/ws", handlerWrapper(notification.WSHandler))
 	// user
-	http.HandleFunc(conf.Wide.Context+"/login", handlerWrapper(session.LoginHandler))
+	http.HandleFunc("/login", handlerWrapper(session.LoginHandler))
-	http.HandleFunc(conf.Wide.Context+"/logout", handlerWrapper(session.LogoutHandler))
+	http.HandleFunc("/logout", handlerWrapper(session.LogoutHandler))
-	http.HandleFunc(conf.Wide.Context+"/signup", handlerWrapper(session.SignUpUserHandler))
+	http.HandleFunc("/preference", handlerWrapper(session.PreferenceHandler))
 	http.HandleFunc(conf.Wide.Context+"/preference", handlerWrapper(session.PreferenceHandler))
 	// playground
-	http.HandleFunc(conf.Wide.Context+"/playground", handlerWrapper(playground.IndexHandler))
+	http.HandleFunc("/playground", handlerWrapper(playground.IndexHandler))
-	http.HandleFunc(conf.Wide.Context+"/playground/", handlerWrapper(playground.IndexHandler))
+	http.HandleFunc("/playground/", handlerWrapper(playground.IndexHandler))
-	http.HandleFunc(conf.Wide.Context+"/playground/ws", handlerWrapper(playground.WSHandler))
+	http.HandleFunc("/playground/ws", handlerWrapper(playground.WSHandler))
-	http.HandleFunc(conf.Wide.Context+"/playground/save", handlerWrapper(playground.SaveHandler))
+	http.HandleFunc("/playground/save", handlerWrapper(playground.SaveHandler))
-	http.HandleFunc(conf.Wide.Context+"/playground/short-url", handlerWrapper(playground.ShortURLHandler))
+	http.HandleFunc("/playground/build", handlerWrapper(playground.BuildHandler))
-	http.HandleFunc(conf.Wide.Context+"/playground/build", handlerWrapper(playground.BuildHandler))
+	http.HandleFunc("/playground/run", handlerWrapper(playground.RunHandler))
-	http.HandleFunc(conf.Wide.Context+"/playground/run", handlerWrapper(playground.RunHandler))
+	http.HandleFunc("/playground/stop", handlerWrapper(playground.StopHandler))
-	http.HandleFunc(conf.Wide.Context+"/playground/stop", handlerWrapper(playground.StopHandler))
+	http.HandleFunc("/playground/autocomplete", handlerWrapper(playground.AutocompleteHandler))
 	http.HandleFunc(conf.Wide.Context+"/playground/autocomplete", handlerWrapper(playground.AutocompleteHandler))
-	// git
+	logger.Infof("Wide is running [%s]", conf.Wide.Server)
 	http.HandleFunc(conf.Wide.Context+"/git/clone", handlerWrapper(git.CloneHandler))
-	logger.Infof("Wide is running [%s]", conf.Wide.Server+conf.Wide.Context)
+	err := http.ListenAndServe("0.0.0.0:7070", nil)
 	err := http.ListenAndServe(conf.Wide.Server, nil)
 	if err != nil {
 		logger.Error(err)
 	}
@ -195,57 +166,51 @@ func main() {
 // indexHandler handles request of Wide index.
 func indexHandler(w http.ResponseWriter, r *http.Request) {
-	if conf.Wide.Context+"/" != r.RequestURI {
+	if "/" != r.RequestURI {
-		http.Redirect(w, r, conf.Wide.Context+"/", http.StatusFound)
+		http.Redirect(w, r, "/", http.StatusFound)
 		return
 	}
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
-		http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
+		http.Redirect(w, r, "/login", http.StatusFound)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	if "playground" == username { // reserved user for Playground
+	if "playground" == uid { // reserved user for Playground
-		http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
+		http.Redirect(w, r, "/login", http.StatusFound)
 		return
 	}
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
-	user := conf.GetUser(username)
+	user := conf.GetUser(uid)
 	if nil == user {
-		logger.Warnf("Not found user [%s]", username)
+		http.Redirect(w, r, "/login", http.StatusFound)
 		http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
 		return
 	}
 	locale := user.Locale
-	wideSessions := session.WideSessions.GetByUsername(username)
+	wideSessions := session.WideSessions.GetByUserId(uid)
 	model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
-		"username": username, "sid": session.WideSessions.GenId(), "latestSessionContent": user.LatestSessionContent,
+		"uid": uid, "sid": session.WideSessions.GenId(), "latestSessionContent": user.LatestSessionContent,
 		"pathSeparator": conf.PathSeparator, "codeMirrorVer": conf.CodeMirrorVer,
-		"user": user, "editorThemes": conf.GetEditorThemes(), "crossPlatforms": util.Go.GetCrossPlatforms()}
+		"user": user, "editorThemes": conf.GetEditorThemes(), "crossPlatforms": []string{"darwin_amd64", "linux_amd64", "windows_amd64"}}
-	logger.Debugf("User [%s] has [%d] sessions", username, len(wideSessions))
+	logger.Debugf("User [%s] has [%d] sessions", uid, len(wideSessions))
 	t, err := template.ParseFiles("views/index.html")
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@ -253,6 +218,22 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 	t.Execute(w, model)
 }
 // handleSignal handles system signal for graceful shutdown.
 func handleSignal() {
 	go func() {
 		c := make(chan os.Signal)
 		signal.Notify(c, syscall.SIGINT, syscall.SIGQUIT, syscall.SIGTERM)
 		s := <-c
 		logger.Tracef("Got signal [%s]", s)
 		session.SaveOnlineUsers()
 		logger.Tracef("Saved all online user, exit")
 		os.Exit(0)
 	}()
 }
 // serveSingle registers the handler function for the given pattern and filename.
 func serveSingle(pattern string, filename string) {
 	http.HandleFunc(pattern, func(w http.ResponseWriter, r *http.Request) {
@ -262,22 +243,20 @@ func serveSingle(pattern string, filename string) {
 // startHandler handles request of start page.
 func startHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
-		http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
+		http.Redirect(w, r, "/s", http.StatusFound)
 		return
 	}
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	user := conf.GetUser(uid)
-	userWorkspace := conf.GetUserWorkspace(username)
+	locale := user.Locale
 	userWorkspace := conf.GetUserWorkspace(uid)
 	sid := r.URL.Query()["sid"][0]
 	wSession := session.WideSessions.Get(sid)
@ -286,13 +265,13 @@ func startHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
-		"username": username, "workspace": userWorkspace, "ver": conf.WideVersion, "sid": sid}
+		"uid": uid, "workspace": userWorkspace, "ver": conf.WideVersion, "sid": sid, "username": user.Name}
 	t, err := template.ParseFiles("views/start.html")
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@ -302,21 +281,18 @@ func startHandler(w http.ResponseWriter, r *http.Request) {
 // keyboardShortcutsHandler handles request of keyboard shortcuts page.
 func keyboardShortcutsHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
-		http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
+		http.Redirect(w, r, "/login", http.StatusFound)
 		return
 	}
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	locale := conf.GetUser(uid).Locale
 	model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale}
@ -324,7 +300,7 @@ func keyboardShortcutsHandler(w http.ResponseWriter, r *http.Request) {
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@ -334,21 +310,18 @@ func keyboardShortcutsHandler(w http.ResponseWriter, r *http.Request) {
 // aboutHandle handles request of about page.
 func aboutHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
-		http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
+		http.Redirect(w, r, "/login", http.StatusFound)
 		return
 	}
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	locale := conf.GetUser(uid).Locale
 	model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
 		"ver": conf.WideVersion, "goos": runtime.GOOS, "goarch": runtime.GOARCH, "gover": runtime.Version()}
@ -357,7 +330,7 @@ func aboutHandler(w http.ResponseWriter, r *http.Request) {
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@ -436,7 +409,7 @@ func stopwatch(handler func(w http.ResponseWriter, r *http.Request)) func(w http
 // panicRecover wraps the panic recover process.
 func panicRecover(handler func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		handler(w, r)
 	}
--- a/notification/notifications.go
+++ b/notification/notifications.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -21,12 +21,12 @@ import (
 	"strconv"
 	"time"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/event"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/event"
-	"github.com/b3log/wide/log"
+	"github.com/88250/wide/i18n"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/session"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/util"
 	"github.com/gorilla/websocket"
 )
@ -40,7 +40,7 @@ const (
 )
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 // Notification represents a notification.
 type Notification struct {
@ -62,9 +62,9 @@ func event2Notification(e *event.Event) {
 		return
 	}
-	httpSession, _ := session.HTTPSession.Get(wsChannel.Request, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(wsChannel.Request, session.CookieName)
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	locale := conf.GetUser(uid).Locale
 	var notification *Notification
--- a/output/build.go
+++ b/output/build.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -17,94 +17,132 @@ package output
 import (
 	"bufio"
 	"encoding/json"
 	"fmt"
 	"io"
 	"io/ioutil"
 	"math/rand"
 	"net/http"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"runtime"
 	"strconv"
 	"strings"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/i18n"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/session"
 )
 // BuildHandler handles request of building.
 func BuildHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if conf.Wide.ReadOnly {
 		result.Code = -1
 		result.Msg = "readonly mode"
 		return
 	}
 	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	user := conf.GetUser(uid)
 	locale := user.Locale
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	sid := args["sid"].(string)
 	filePath := args["file"].(string)
-
+	if gulu.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
 	if util.Go.IsAPI(filePath) || !session.CanAccess(username, filePath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	curDir := filepath.Dir(filePath)
 	fout, err := os.Create(filePath)
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	code := args["code"].(string)
-
+	if _, err := fout.WriteString(code); nil != err {
 	fout.WriteString(code)
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	fout.Close()
 	channelRet := map[string]interface{}{}
 	if nil != session.OutputWS[sid] {
 		// display "START [go build]" in front-end browser
 		msg := i18n.Get(locale, "start-build").(string)
 		msg = strings.Replace(msg, "build]", "build "+fmt.Sprint(user.BuildArgs(runtime.GOOS))+"]", 1)
 		channelRet["output"] = "<span class='start-build'>" + msg + "</span>\n"
 		channelRet["cmd"] = "start-build"
 		wsChannel := session.OutputWS[sid]
 		wsChannel.WriteJSON(&channelRet)
 		wsChannel.Refresh()
 	}
 	var goModCmd *exec.Cmd
 	if !gulu.File.IsExist(filepath.Join(curDir, "go.mod")) {
 		curDirName := filepath.Base(curDir)
 		goModCmd = exec.Command("go", "mod", "init", curDirName)
 	} else {
 		goModCmd = exec.Command("go", "mod", "tidy")
 	}
 	goModCmd.Dir = curDir
 	setCmdEnv(goModCmd, uid)
 	outputBytes, err := goModCmd.CombinedOutput()
 	output := string(outputBytes)
 	if nil != err && strings.Contains(output, "go.mod already exists") {
 		logger.Error(err.Error() + ": " + output)
 		result.Code = -1
 		return
 	}
 	var goBuildArgs []string
 	goBuildArgs = append(goBuildArgs, "build")
 	goBuildArgs = append(goBuildArgs, user.BuildArgs(runtime.GOOS)...)
 	//if !gulu.Str.Contains("-i", goBuildArgs) {
 	//	goBuildArgs = append(goBuildArgs, "-i")
 	//}
 	cmd := exec.Command("go", goBuildArgs...)
 	cmd.Dir = curDir
 	setCmdEnv(cmd, uid)
 	suffix := ""
-	if util.OS.IsWindows() {
+	if gulu.OS.IsWindows() {
 		suffix = ".exe"
 	}
 	cmd := exec.Command("go", "build")
 	cmd.Dir = curDir
 	setCmdEnv(cmd, username)
 	executable := filepath.Base(curDir) + suffix
 	executable = filepath.Join(curDir, executable)
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -112,90 +150,108 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
-	if !result.Succ {
+	if 0 != result.Code {
 		return
 	}
-	channelRet := map[string]interface{}{}
+	if err := cmd.Start(); nil != err {
 	if nil != session.OutputWS[sid] {
 		// display "START [go build]" in front-end browser
 		channelRet["output"] = "<span class='start-build'>" + i18n.Get(locale, "start-build").(string) + "</span>\n"
 		channelRet["cmd"] = "start-build"
 		wsChannel := session.OutputWS[sid]
 		err := wsChannel.WriteJSON(&channelRet)
 		if nil != err {
 		logger.Error(err)
 		result.Code = -1
 		return
 	}
 	channelRet["cmd"] = "build"
 	channelRet["executable"] = executable
 	outReader := bufio.NewReader(stdout)
 	/////////
 	go func() {
 		defer gulu.Panic.Recover(nil)
 		for {
 			wsChannel := session.OutputWS[sid]
 			if nil == wsChannel {
 				break
 			}
 			line, err := outReader.ReadString('\n')
 			if io.EOF == err {
 				break
 			}
 			_, ok := err.(*os.PathError)
 			if ok {
 				// 构建时报 “read |0: file already closed” https://github.com/b3log/wide/issues/363
 				break
 			}
 			if nil != err {
 				logger.Warnf("%#v", err)
 				break
 			}
 			channelRet["output"] = line
 			err = wsChannel.WriteJSON(&channelRet)
 			if nil != err {
 				logger.Warn(err)
 				break
 			}
 			wsChannel.Refresh()
 		}
 	}()
 	errReader := bufio.NewReader(stderr)
 	var lines []string
 	for {
 		wsChannel := session.OutputWS[sid]
 		if nil == wsChannel {
 			break
 		}
 		line, err := errReader.ReadString('\n')
 		if io.EOF == err {
 			break
 		}
 		lines = append(lines, line)
 		if nil != err {
 			logger.Warn(err)
 			break
 		}
 		// path process
 		errOutWithPath := parsePath(curDir, line)
 		channelRet["output"] = "<span class='stderr'>" + errOutWithPath + "</span>"
 		err = wsChannel.WriteJSON(&channelRet)
 		if nil != err {
 			logger.Warn(err)
 			break
 		}
 		wsChannel.Refresh()
 	}
-	reader := bufio.NewReader(io.MultiReader(stdout, stderr))
+	if nil == cmd.Wait() {
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	go func(runningId int) {
 		defer util.Recover()
 		defer cmd.Wait()
 		// logger.Debugf("User [%s, %s] is building [id=%d, dir=%s]", username, sid, runningId, curDir)
 		// read all
 		buf, _ := ioutil.ReadAll(reader)
 		channelRet := map[string]interface{}{}
 		channelRet["cmd"] = "build"
 		channelRet["executable"] = executable
 		if 0 == len(buf) { // build success
 		channelRet["nextCmd"] = args["nextCmd"]
 		channelRet["output"] = "<span class='build-succ'>" + i18n.Get(locale, "build-succ").(string) + "</span>\n"
-
+	} else {
-			go func() { // go install, for subsequent gocode lib-path
+		channelRet["output"] = "<span class='build-error'>" + i18n.Get(locale, "build-error").(string) + "</span>\n"
 				defer util.Recover()
 				cmd := exec.Command("go", "install")
 				cmd.Dir = curDir
 				setCmdEnv(cmd, username)
 				out, _ := cmd.CombinedOutput()
 				if len(out) > 0 {
 					logger.Warn(string(out))
 				}
 			}()
 		} else { // build error
 			// build gutter lint
 			errOut := string(buf)
 			lines := strings.Split(errOut, "\n")
 			// path process
 			var errOutWithPath string
 			for _, line := range lines {
 				errOutWithPath += parsePath(curDir, line) + "\n"
 			}
 			channelRet["output"] = "<span class='build-error'>" + i18n.Get(locale, "build-error").(string) + "</span>\n" +
 				"<span class='stderr'>" + errOutWithPath + "</span>"
 		// lint process
 		if lines[0][0] == '#' {
 			lines = lines[1:] // skip the first line
 		}
@ -203,7 +259,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 		lints := []*Lint{}
 		for _, line := range lines {
-				if len(line) < 1 {
+			if len(line) < 1 || !strings.Contains(line, ":") {
 				continue
 			}
@ -234,7 +290,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 			}
 			lint := &Lint{
-					File:     filepath.Join(curDir, file),
+				File:     filepath.ToSlash(filepath.Join(curDir, file)),
 				LineNo:   lineNo - 1,
 				Severity: lintSeverityError,
 				Msg:      msg,
@ -246,17 +302,14 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 		channelRet["lints"] = lints
 	}
 		if nil != session.OutputWS[sid] {
 			// logger.Debugf("User [%s, %s] 's build [id=%d, dir=%s] has done", username, sid, runningId, curDir)
 	wsChannel := session.OutputWS[sid]
-			err := wsChannel.WriteJSON(&channelRet)
+	if nil == wsChannel {
 		return
 	}
 	err = wsChannel.WriteJSON(&channelRet)
 	if nil != err {
 		logger.Warn(err)
 	}
 	wsChannel.Refresh()
 }
 	}(rand.Int())
 }
--- a/output/cross.go
+++ b/output/cross.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -26,31 +26,37 @@ import (
 	"strconv"
 	"strings"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/i18n"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/session"
 )
 // CrossCompilationHandler handles request of cross compilation.
 func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if conf.Wide.ReadOnly {
 		result.Code = -1
 		result.Msg = "readonly mode"
 		return
 	}
 	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	locale := conf.GetUser(uid).Locale
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -58,7 +64,7 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 	sid := args["sid"].(string)
 	filePath := args["path"].(string)
-	if util.Go.IsAPI(filePath) || !session.CanAccess(username, filePath) {
+	if gulu.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
@ -75,10 +81,15 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 		suffix = ".exe"
 	}
-	cmd := exec.Command("go", "build")
+	user := conf.GetUser(uid)
 	goBuildArgs := []string{}
 	goBuildArgs = append(goBuildArgs, "build")
 	goBuildArgs = append(goBuildArgs, user.BuildArgs(goos)...)
 	cmd := exec.Command("go", goBuildArgs...)
 	cmd.Dir = curDir
-	setCmdEnv(cmd, username)
+	setCmdEnv(cmd, uid)
 	for i, env := range cmd.Env {
 		if strings.HasPrefix(env, "GOOS=") {
@ -101,7 +112,7 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -109,12 +120,12 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
-	if !result.Succ {
+	if 0 != result.Code {
 		return
 	}
@ -141,17 +152,15 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	go func(runningId int) {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		defer cmd.Wait()
 		// logger.Debugf("User [%s, %s] is building [id=%d, dir=%s]", username, sid, runningId, curDir)
 		// read all
 		buf, _ := ioutil.ReadAll(reader)
@ -230,8 +239,6 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 		}
 		if nil != session.OutputWS[sid] {
 			// logger.Debugf("User [%s, %s] 's build [id=%d, dir=%s] has done", username, sid, runningId, curDir)
 			wsChannel := session.OutputWS[sid]
 			err := wsChannel.WriteJSON(&channelRet)
 			if nil != err {
--- a/output/get.go
+++ b/output/get.go
@ -1,146 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 package output
 import (
 	"bufio"
 	"encoding/json"
 	"io"
 	"io/ioutil"
 	"math/rand"
 	"net/http"
 	"os/exec"
 	"path/filepath"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
 	"github.com/b3log/wide/session"
 	"github.com/b3log/wide/util"
 )
 // GoGetHandler handles request of go get.
 func GoGetHandler(w http.ResponseWriter, r *http.Request) {
 	result := util.NewResult()
 	defer util.RetResult(w, r, result)
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	username := httpSession.Values["username"].(string)
 	locale := conf.GetUser(username).Locale
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	sid := args["sid"].(string)
 	filePath := args["file"].(string)
 	curDir := filepath.Dir(filePath)
 	cmd := exec.Command("go", "get")
 	cmd.Dir = curDir
 	setCmdEnv(cmd, username)
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	if !result.Succ {
 		return
 	}
 	channelRet := map[string]interface{}{}
 	if nil != session.OutputWS[sid] {
 		// display "START [go get]" in front-end browser
 		channelRet["output"] = "<span class='start-get'>" + i18n.Get(locale, "start-get").(string) + "</span>\n"
 		channelRet["cmd"] = "start-get"
 		wsChannel := session.OutputWS[sid]
 		err := wsChannel.WriteJSON(&channelRet)
 		if nil != err {
 			logger.Warn(err)
 			return
 		}
 		wsChannel.Refresh()
 	}
 	reader := bufio.NewReader(io.MultiReader(stdout, stderr))
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	go func(runningId int) {
 		defer util.Recover()
 		defer cmd.Wait()
 		logger.Debugf("User [%s, %s] is running [go get] [runningId=%d]", username, sid, runningId)
 		channelRet := map[string]interface{}{}
 		channelRet["cmd"] = "go get"
 		// read all
 		buf, _ := ioutil.ReadAll(reader)
 		if 0 != len(buf) {
 			logger.Debugf("User [%s, %s] 's [go get] [runningId=%d] has done (with error)", username, sid, runningId)
 			channelRet["output"] = "<span class='get-error'>" + i18n.Get(locale, "get-error").(string) + "</span>\n" + string(buf)
 		} else {
 			logger.Debugf("User [%s, %s] 's running [go get] [runningId=%d] has done", username, sid, runningId)
 			channelRet["output"] = "<span class='get-succ'>" + i18n.Get(locale, "get-succ").(string) + "</span>\n"
 		}
 		if nil != session.OutputWS[sid] {
 			wsChannel := session.OutputWS[sid]
 			err := wsChannel.WriteJSON(&channelRet)
 			if nil != err {
 				logger.Warn(err)
 			}
 			wsChannel.Refresh()
 		}
 	}(rand.Int())
 }
--- a/output/install.go
+++ b/output/install.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -26,31 +26,37 @@ import (
 	"strconv"
 	"strings"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/i18n"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/session"
 )
 // GoInstallHandler handles request of go install.
 func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if conf.Wide.ReadOnly {
 		result.Code = -1
 		result.Msg = "readonly mode"
 		return
 	}
 	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	locale := conf.GetUser(uid).Locale
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -63,14 +69,14 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 	cmd := exec.Command("go", "install")
 	cmd.Dir = curDir
-	setCmdEnv(cmd, username)
+	setCmdEnv(cmd, uid)
 	logger.Debugf("go install %s", curDir)
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -78,12 +84,12 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
-	if !result.Succ {
+	if 0 != result.Code {
 		return
 	}
@ -110,16 +116,16 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	go func(runningId int) {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		defer cmd.Wait()
-		logger.Debugf("User [%s, %s] is running [go install] [id=%d, dir=%s]", username, sid, runningId, curDir)
+		logger.Debugf("User [%s, %s] is running [go install] [id=%d, dir=%s]", uid, sid, runningId, curDir)
 		// read all
 		buf, _ := ioutil.ReadAll(reader)
@ -183,7 +189,7 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 		}
 		if nil != session.OutputWS[sid] {
-			logger.Debugf("User [%s, %s] 's running [go install] [id=%d, dir=%s] has done", username, sid, runningId, curDir)
+			logger.Debugf("User [%s, %s] 's running [go install] [id=%d, dir=%s] has done", uid, sid, runningId, curDir)
 			wsChannel := session.OutputWS[sid]
 			err := wsChannel.WriteJSON(&channelRet)
--- a/output/namespace.go
+++ b/output/namespace.go
@ -1,25 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 // +build !linux
 package output
 import (
 	"os/exec"
 )
 func SetNamespace(cmd *exec.Cmd) {
 	// do nothing
 }
--- a/output/namespace_linux.go
+++ b/output/namespace_linux.go
@ -1,35 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 package output
 import (
 	"os/exec"
 	"syscall"
 )
 func SetNamespace(cmd *exec.Cmd) {
 	// XXX: keep move with Go 1.4 and later's
 	cmd.SysProcAttr = &syscall.SysProcAttr{}
 	//cmd.SysProcAttr.Cloneflags = syscall.CLONE_NEWUSER | syscall.CLONE_NEWNS | syscall.CLONE_NEWUTS | syscall.CLONE_NEWPID | syscall.CLONE_NEWIPC | syscall.CLONE_NEWNET
 	cmd.SysProcAttr.Cloneflags = syscall.CLONE_NEWUSER /*| syscall.CLONE_NEWNS*/ | syscall.CLONE_NEWUTS | syscall.CLONE_NEWPID | syscall.CLONE_NEWIPC /*| syscall.CLONE_NEWNET*/
 	cmd.SysProcAttr.Credential = &syscall.Credential{
 		Uid: 0,
 		Gid: 0,
 	}
 	cmd.SysProcAttr.UidMappings = []syscall.SysProcIDMap{{ContainerID: 0, HostID: 1001, Size: 1}}
 	cmd.SysProcAttr.GidMappings = []syscall.SysProcIDMap{{ContainerID: 0, HostID: 1001, Size: 1}}
 }
--- a/output/outputs.go
+++ b/output/outputs.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -25,10 +25,10 @@ import (
 	"strings"
 	"time"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/log"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/session"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/util"
 	"github.com/gorilla/websocket"
 )
@ -38,7 +38,7 @@ const (
 )
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 // Lint represents a code lint.
 type Lint struct {
@ -93,7 +93,7 @@ func parsePath(curDir, outputLine string) string {
 		column = parts[2]
 	}
-	tagStart := `<span class="path" data-path="` + filepath.Join(curDir, file) + `" data-line="` + line +
+	tagStart := `<span class="path" data-path="` + filepath.ToSlash(filepath.Join(curDir, file)) + `" data-line="` + line +
 		`" data-column="` + column + `">`
 	text := file + ":" + line
 	if hasColumn {
@ -104,18 +104,29 @@ func parsePath(curDir, outputLine string) string {
 	return tagStart + text + tagEnd + msgPart
 }
-func setCmdEnv(cmd *exec.Cmd, username string) {
+func setCmdEnv(cmd *exec.Cmd, uid string) {
-	userWorkspace := conf.GetUserWorkspace(username)
+	userWorkspace := conf.GetUserWorkspace(uid)
 	cache, err := os.UserCacheDir()
 	if nil != err {
 		logger.Warnf("Get user cache dir failed [" + err.Error() + "]")
 		cache = os.TempDir()
 	}
 	cmd.Env = append(cmd.Env,
 		"GOPROXY=https://goproxy.cn",
 		"GO111MODULE=on",
 		"GOPATH="+userWorkspace,
 		"GOOS="+runtime.GOOS,
 		"GOARCH="+runtime.GOARCH,
 		"GOROOT="+runtime.GOROOT(),
 		"GOCACHE="+cache,
 		"PATH="+os.Getenv("PATH"))
-	if util.OS.IsWindows() {
+	if gulu.OS.IsWindows() {
 		// FIXME: for some weird issues on Windows, such as: The requested service provider could not be loaded or initialized.
 		cmd.Env = append(cmd.Env, os.Environ()...)
 	} else {
 		// 编译链接时找不到依赖的动态库 https://github.com/b3log/wide/issues/352
 		cmd.Env = append(cmd.Env, "LD_LIBRARY_PATH="+os.Getenv("LD_LIBRARY_PATH"))
 	}
 }
--- a/output/processes.go
+++ b/output/processes.go
@ -1,105 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 package output
 import (
 	"os"
 	"sync"
 	"github.com/b3log/wide/session"
 )
 // Type of process set.
 type procs map[string][]*os.Process
 // Processse of all users.
 //
 // <sid, []*os.Process>
 var Processes = procs{}
 // Exclusive lock.
 var mutex sync.Mutex
 // Add adds the specified process to the user process set.
 func (procs *procs) Add(wSession *session.WideSession, proc *os.Process) {
 	mutex.Lock()
 	defer mutex.Unlock()
 	sid := wSession.ID
 	userProcesses := (*procs)[sid]
 	userProcesses = append(userProcesses, proc)
 	(*procs)[sid] = userProcesses
 	// bind process with wide session
 	wSession.SetProcesses(userProcesses)
 	logger.Tracef("Session [%s] has [%d] processes", sid, len((*procs)[sid]))
 }
 // Remove removes the specified process from the user process set.
 func (procs *procs) Remove(wSession *session.WideSession, proc *os.Process) {
 	mutex.Lock()
 	defer mutex.Unlock()
 	sid := wSession.ID
 	userProcesses := (*procs)[sid]
 	var newProcesses []*os.Process
 	for i, p := range userProcesses {
 		if p.Pid == proc.Pid {
 			newProcesses = append(userProcesses[:i], userProcesses[i+1:]...) // remove it
 			(*procs)[sid] = newProcesses
 			// bind process with wide session
 			wSession.SetProcesses(newProcesses)
 			logger.Tracef("Session [%s] has [%d] processes", sid, len((*procs)[sid]))
 			return
 		}
 	}
 }
 // Kill kills a process specified by the given pid.
 func (procs *procs) Kill(wSession *session.WideSession, pid int) {
 	mutex.Lock()
 	defer mutex.Unlock()
 	sid := wSession.ID
 	userProcesses := (*procs)[sid]
 	for i, p := range userProcesses {
 		if p.Pid == pid {
 			if err := p.Kill(); nil != err {
 				logger.Errorf("Kill a process [pid=%d] of user [%s, %s] failed [error=%v]", pid, wSession.Username, sid, err)
 			} else {
 				var newProcesses []*os.Process
 				newProcesses = append(userProcesses[:i], userProcesses[i+1:]...)
 				(*procs)[sid] = newProcesses
 				// bind process with wide session
 				wSession.SetProcesses(newProcesses)
 				logger.Debugf("Killed a process [pid=%d] of user [%s, %s]", pid, wSession.Username, sid)
 			}
 			return
 		}
 	}
 }
--- a/output/run.go
+++ b/output/run.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -15,272 +15,16 @@
 package output
 import (
-	"bufio"
+	"github.com/88250/wide/session"
 	"encoding/json"
 	"math/rand"
 	"net/http"
 	"os/exec"
 	"path/filepath"
 	"strings"
 	"time"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/session"
 	"github.com/b3log/wide/util"
 )
 const (
 	outputBufMax   = 1024 // 1024 string(rune)
 	outputTimeout  = 100  // 100ms
 	outputCountMax = 30   // 30 reads
 )
 type outputBuf struct {
 	content     string
 	millisecond int64
 }
 // RunHandler handles request of executing a binary file.
 func RunHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	session.RunHandler(w, r, session.OutputWS)
 	defer util.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 }
-	sid := args["sid"].(string)
+// StopHandler handles request of stopping a running process.
 	wSession := session.WideSessions.Get(sid)
 	if nil == wSession {
 		result.Succ = false
 	}
 	filePath := args["executable"].(string)
 	curDir := filepath.Dir(filePath)
 	cmd := exec.Command(filePath)
 	cmd.Dir = curDir
 	if conf.Docker {
 		SetNamespace(cmd)
 	}
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 	}
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 	}
 	outReader := bufio.NewReader(stdout)
 	errReader := bufio.NewReader(stderr)
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
 		result.Succ = false
 	}
 	wsChannel := session.OutputWS[sid]
 	channelRet := map[string]interface{}{}
 	if !result.Succ {
 		if nil != wsChannel {
 			channelRet["cmd"] = "run-done"
 			channelRet["output"] = ""
 			err := wsChannel.WriteJSON(&channelRet)
 			if nil != err {
 				logger.Warn(err)
 				return
 			}
 			wsChannel.Refresh()
 		}
 		return
 	}
 	channelRet["pid"] = cmd.Process.Pid
 	// add the process to user's process set
 	Processes.Add(wSession, cmd.Process)
 	go func(runningId int) {
 		defer util.Recover()
 		defer cmd.Wait()
 		logger.Debugf("User [%s, %s] is running [id=%d, file=%s]", wSession.Username, sid, runningId, filePath)
 		// push once for front-end to get the 'run' state and pid
 		if nil != wsChannel {
 			channelRet["cmd"] = "run"
 			channelRet["output"] = ""
 			err := wsChannel.WriteJSON(&channelRet)
 			if nil != err {
 				logger.Warn(err)
 				return
 			}
 			wsChannel.Refresh()
 		}
 		go func() {
 			defer util.Recover()
 			buf := outputBuf{}
 			count := 0
 			for {
 				wsChannel := session.OutputWS[sid]
 				if nil == wsChannel {
 					break
 				}
 				r, _, err := outReader.ReadRune()
 				count++
 				if nil != err {
 					// remove the exited process from user's process set
 					Processes.Remove(wSession, cmd.Process)
 					logger.Debugf("User [%s, %s] 's running [id=%d, file=%s] has done [stdout %v], ",
 						wSession.Username, sid, runningId, filePath, err)
 					channelRet["cmd"] = "run-done"
 					channelRet["output"] = buf.content
 					err := wsChannel.WriteJSON(&channelRet)
 					if nil != err {
 						logger.Warn(err)
 						break
 					}
 					wsChannel.Refresh()
 					break
 				}
 				oneRuneStr := string(r)
 				oneRuneStr = strings.Replace(oneRuneStr, "<", "&lt;", -1)
 				oneRuneStr = strings.Replace(oneRuneStr, ">", "&gt;", -1)
 				buf.content += oneRuneStr
 				now := time.Now().UnixNano() / int64(time.Millisecond)
 				if 0 == buf.millisecond {
 					buf.millisecond = now
 				}
 				flood := count > outputCountMax
 				if "\n" == oneRuneStr && !flood {
 					channelRet["cmd"] = "run"
 					channelRet["output"] = buf.content
 					buf = outputBuf{} // a new buffer
 					count = 0         // clear count
 					err = wsChannel.WriteJSON(&channelRet)
 					if nil != err {
 						logger.Warn(err)
 						break
 					}
 					wsChannel.Refresh()
 					continue
 				}
 				if now-outputTimeout >= buf.millisecond || len(buf.content) > outputBufMax {
 					channelRet["cmd"] = "run"
 					channelRet["output"] = buf.content
 					buf = outputBuf{} // a new buffer
 					count = 0         // clear count
 					err = wsChannel.WriteJSON(&channelRet)
 					if nil != err {
 						logger.Warn(err)
 						break
 					}
 					wsChannel.Refresh()
 					continue
 				}
 			}
 		}()
 		buf := outputBuf{}
 		for {
 			r, _, err := errReader.ReadRune()
 			wsChannel := session.OutputWS[sid]
 			if nil != err || nil == wsChannel {
 				break
 			}
 			oneRuneStr := string(r)
 			oneRuneStr = strings.Replace(oneRuneStr, "<", "&lt;", -1)
 			oneRuneStr = strings.Replace(oneRuneStr, ">", "&gt;", -1)
 			buf.content += oneRuneStr
 			now := time.Now().UnixNano() / int64(time.Millisecond)
 			if 0 == buf.millisecond {
 				buf.millisecond = now
 			}
 			if now-outputTimeout >= buf.millisecond || len(buf.content) > outputBufMax || oneRuneStr == "\n" {
 				channelRet["cmd"] = "run"
 				channelRet["output"] = "<span class='stderr'>" + buf.content + "</span>"
 				buf = outputBuf{} // a new buffer
 				err = wsChannel.WriteJSON(&channelRet)
 				if nil != err {
 					logger.Warn(err)
 					break
 				}
 				wsChannel.Refresh()
 			}
 		}
 	}(rand.Int())
 }
 // StopHandler handles request of stoping a running process.
 func StopHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	session.StopHandler(w, r)
 	defer util.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	sid := args["sid"].(string)
 	pid := int(args["pid"].(float64))
 	wSession := session.WideSessions.Get(sid)
 	if nil == wSession {
 		result.Succ = false
 		return
 	}
 	Processes.Kill(wSession, pid)
 }
--- a/output/test.go
+++ b/output/test.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -24,31 +24,31 @@ import (
 	"os/exec"
 	"path/filepath"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/i18n"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/session"
 )
 // GoTestHandler handles request of go test.
 func GoTestHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	locale := conf.GetUser(uid).Locale
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -61,12 +61,12 @@ func GoTestHandler(w http.ResponseWriter, r *http.Request) {
 	cmd := exec.Command("go", "test", "-v")
 	cmd.Dir = curDir
-	setCmdEnv(cmd, username)
+	setCmdEnv(cmd, uid)
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -74,12 +74,12 @@ func GoTestHandler(w http.ResponseWriter, r *http.Request) {
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
-	if !result.Succ {
+	if 0 != result.Code {
 		return
 	}
@ -106,15 +106,15 @@ func GoTestHandler(w http.ResponseWriter, r *http.Request) {
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	go func(runningId int) {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
-		logger.Debugf("User [%s, %s] is running [go test] [runningId=%d]", username, sid, runningId)
+		logger.Debugf("User [%s, %s] is running [go test] [runningId=%d]", uid, sid, runningId)
 		channelRet := map[string]interface{}{}
 		channelRet["cmd"] = "go test"
@ -126,11 +126,11 @@ func GoTestHandler(w http.ResponseWriter, r *http.Request) {
 		cmd.Wait()
 		if !cmd.ProcessState.Success() {
-			logger.Debugf("User [%s, %s] 's running [go test] [runningId=%d] has done (with error)", username, sid, runningId)
+			logger.Debugf("User [%s, %s] 's running [go test] [runningId=%d] has done (with error)", uid, sid, runningId)
 			channelRet["output"] = "<span class='test-error'>" + i18n.Get(locale, "test-error").(string) + "</span>\n" + string(buf)
 		} else {
-			logger.Debugf("User [%s, %s] 's running [go test] [runningId=%d] has done", username, sid, runningId)
+			logger.Debugf("User [%s, %s] 's running [go test] [runningId=%d] has done", uid, sid, runningId)
 			channelRet["output"] = "<span class='test-succ'>" + i18n.Get(locale, "test-succ").(string) + "</span>\n" + string(buf)
 		}
--- a/output/vet.go
+++ b/output/vet.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -24,31 +24,31 @@ import (
 	"os/exec"
 	"path/filepath"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/i18n"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/session"
 )
 // GoVetHandler handles request of go vet.
 func GoVetHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	locale := conf.GetUser(username).Locale
+	locale := conf.GetUser(uid).Locale
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -61,12 +61,12 @@ func GoVetHandler(w http.ResponseWriter, r *http.Request) {
 	cmd := exec.Command("go", "vet", ".")
 	cmd.Dir = curDir
-	setCmdEnv(cmd, username)
+	setCmdEnv(cmd, uid)
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -74,12 +74,12 @@ func GoVetHandler(w http.ResponseWriter, r *http.Request) {
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
-	if !result.Succ {
+	if 0 != result.Code {
 		return
 	}
@ -106,15 +106,15 @@ func GoVetHandler(w http.ResponseWriter, r *http.Request) {
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	go func(runningId int) {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
-		logger.Debugf("User [%s, %s] is running [go vet] [runningId=%d]", username, sid, runningId)
+		logger.Debugf("User [%s, %s] is running [go vet] [runningId=%d]", uid, sid, runningId)
 		channelRet := map[string]interface{}{}
 		channelRet["cmd"] = "go vet"
@ -126,11 +126,11 @@ func GoVetHandler(w http.ResponseWriter, r *http.Request) {
 		cmd.Wait()
 		if !cmd.ProcessState.Success() {
-			logger.Debugf("User [%s, %s] 's running [go vet] [runningId=%d] has done (with error)", username, sid, runningId)
+			logger.Debugf("User [%s, %s] 's running [go vet] [runningId=%d] has done (with error)", uid, sid, runningId)
 			channelRet["output"] = "<span class='vet-error'>" + i18n.Get(locale, "vet-error").(string) + "</span>\n" + string(buf)
 		} else {
-			logger.Debugf("User [%s, %s] 's running [go vet] [runningId=%d] has done", username, sid, runningId)
+			logger.Debugf("User [%s, %s] 's running [go vet] [runningId=%d] has done", uid, sid, runningId)
 			channelRet["output"] = "<span class='vet-succ'>" + i18n.Get(locale, "vet-succ").(string) + "</span>\n" + string(buf)
 		}
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@ -1,33 +1,36 @@
 {
  "name": "wide",
-    "version": "1.4.0",
+  "version": "1.6.0",
-    "description": "A Web-based IDE for Teams using Go programming language/Golang.",
+  "description": "A Web-based Go IDE , do your development anytime, anywhere.",
  "homepage": "https://wide.b3log.org",
  "repository": {
    "type": "git",
-        "url": "git://github.com/b3log/wide.git"
+    "url": "git://github.com/88250/wide.git"
  },
  "bugs": {
-        "url": "https://github.com/b3log/wide/issues"
+    "url": "https://github.com/88250/wide/issues"
  },
  "license": "Apache License",
  "private": true,
-    "author": "Daniel <dl882509@gmail.com> (http://88250.b3log.org) & Vanessa <lly219@gmail.com> (http://vanessa.b3log.org)",
+  "author": "Daniel <d@b3log.org> (http://88250.b3log.org) & Vanessa <v@b3log.org> (http://vanessa.b3log.org)",
  "maintainers": [
    {
      "name": "Daniel",
-            "email": "dl88250@gmail.com"
+      "email": "d@b3log.org"
    },
    {
      "name": "Vanessa",
-            "email": "lly219@gmail.com"
+      "email": "v@b3log.org"
    }
  ],
  "scripts": {
    "build": "gulp"
  },
  "devDependencies": {
-        "gulp": "3.9.0",
+    "gulp": "^4.0.2",
-        "gulp-concat": "2.6.0",
+    "gulp-clean-css": "^4.2.0",
-        "gulp-minify-css": "1.2.2",
+    "gulp-concat": "^2.6.1",
-        "gulp-uglify": "1.5.1",
+    "gulp-sourcemaps": "^2.6.5",
-        "gulp-sourcemaps": "1.6.0"
+    "gulp-uglify": "^3.0.1"
  }
 }
--- a/pkg.sh
+++ b/pkg.sh
@ -24,7 +24,7 @@ export GOARCH=amd64
 echo wide-${ver}-${GOOS}-${GOARCH}.tar.gz
 go build
 go build github.com/visualfc/gotools
-go build github.com/nsf/gocode
+go build github.com/stamblerre/gocode
 tar zcf ${target}/wide-${ver}-${GOOS}-${GOARCH}.tar.gz ${list} gotools gocode wide --exclude-vcs --exclude='conf/*.go' --exclude='i18n/*.go'
 rm -f wide gotools gocode
@ -33,7 +33,7 @@ export GOARCH=386
 echo wide-${ver}-${GOOS}-${GOARCH}.tar.gz
 go build
 go build github.com/visualfc/gotools
-go build github.com/nsf/gocode
+go build github.com/stamblerre/gocode
 tar zcf ${target}/wide-${ver}-${GOOS}-${GOARCH}.tar.gz ${list} gotools gocode wide --exclude-vcs --exclude='conf/*.go' --exclude='i18n/*.go'
 rm -f wide gotools gocode
@ -45,7 +45,7 @@ export GOARCH=amd64
 echo wide-${ver}-${GOOS}-${GOARCH}.tar.gz
 go build
 go build github.com/visualfc/gotools
-go build github.com/nsf/gocode
+go build github.com/stamblerre/gocode
 tar zcf ${target}/wide-${ver}-${GOOS}-${GOARCH}.tar.gz ${list} gotools gocode wide --exclude-vcs --exclude='conf/*.go' --exclude='i18n/*.go'
 rm -f wide gotools gocode
@ -54,7 +54,7 @@ export GOARCH=386
 echo wide-${ver}-${GOOS}-${GOARCH}.tar.gz
 go build
 go build github.com/visualfc/gotools
-go build github.com/nsf/gocode
+go build github.com/stamblerre/gocode
 tar zcf ${target}/wide-${ver}-${GOOS}-${GOARCH}.tar.gz ${list} gotools gocode wide --exclude-vcs --exclude='conf/*.go' --exclude='i18n/*.go'
 rm -f wide gotools gocode
@ -66,7 +66,7 @@ export GOARCH=amd64
 echo wide-${ver}-${GOOS}-${GOARCH}.zip
 go build
 go build github.com/visualfc/gotools
-go build github.com/nsf/gocode
+go build github.com/stamblerre/gocode
 zip -r -q ${target}/wide-${ver}-${GOOS}-${GOARCH}.zip ${list} gotools.exe gocode.exe wide.exe --exclude=conf/*.go --exclude=i18n/*.go
 rm -f wide.exe gotools.exe gocode.exe
@ -75,6 +75,6 @@ export GOARCH=386
 echo wide-${ver}-${GOOS}-${GOARCH}.zip
 go build
 go build github.com/visualfc/gotools
-go build github.com/nsf/gocode
+go build github.com/stamblerre/gocode
 zip -r -q ${target}/wide-${ver}-${GOOS}-${GOARCH}.zip ${list} gotools.exe gocode.exe wide.exe --exclude=conf/*.go --exclude=i18n/*.go
 rm -f wide.exe gotools.exe gocode.exe
--- a/playground/autocomplete.go
+++ b/playground/autocomplete.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -18,26 +18,32 @@ import (
 	"bytes"
 	"encoding/json"
 	"net/http"
 	"os"
 	"os/exec"
 	"strconv"
 	"strings"
-	"github.com/b3log/wide/session"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/conf"
 	"github.com/88250/wide/session"
 )
 // AutocompleteHandler handles request of code autocompletion.
 func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
-	var args map[string]interface{}
+	if conf.Wide.ReadOnly {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
-	session, _ := session.HTTPSession.Get(r, "wide-session")
+	session, _ := session.HTTPSession.Get(r, session.CookieName)
 	if session.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
@ -48,20 +54,28 @@ func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
 	line := int(args["cursorLine"].(float64))
 	ch := int(args["cursorCh"].(float64))
 	file, err := os.Create("wide_autocomplete_" + gulu.Rand.String(16) + ".go")
 	if nil != err {
 		logger.Error(err)
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	file.WriteString(code)
 	file.Close()
 	path := file.Name()
 	defer os.Remove(path)
 	offset := getCursorOffset(code, line, ch)
-
+	argv := []string{"-f=json", "--in=" + path, "autocomplete", strconv.Itoa(offset)}
-	argv := []string{"-f=json", "autocomplete", strconv.Itoa(offset)}
+	gocode := gulu.Go.GetExecutableInGOBIN("gocode")
 	gocode := util.Go.GetExecutableInGOBIN("gocode")
 	cmd := exec.Command(gocode, argv...)
 	stdin, _ := cmd.StdinPipe()
 	stdin.Write([]byte(code))
 	stdin.Close()
 	output, err := cmd.CombinedOutput()
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
--- a/playground/build.go
+++ b/playground/build.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -22,17 +22,23 @@ import (
 	"path/filepath"
 	"strings"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/session"
 )
 // BuildHandler handles request of Playground building.
 func BuildHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if conf.Wide.ReadOnly {
 		result.Code = -1
 		result.Msg = "readonly mode"
 		return
 	}
 	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
@ -42,23 +48,23 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	fileName := args["fileName"].(string)
-	filePath := filepath.Clean(conf.Wide.Playground + "/" + fileName)
+	filePath := filepath.Clean(conf.Wide.Data + "/playground/" + fileName)
 	suffix := ""
-	if util.OS.IsWindows() {
+	if gulu.OS.IsWindows() {
 		suffix = ".exe"
 	}
 	data := map[string]interface{}{}
 	result.Data = &data
-	executable := filepath.Clean(conf.Wide.Playground + "/" + strings.Replace(fileName, ".go", suffix, -1))
+	executable := filepath.Clean(conf.Wide.Data + "/playground/" + strings.Replace(fileName, ".go", suffix, -1))
 	cmd := exec.Command("go", "build", "-o", executable, filePath)
 	out, err := cmd.CombinedOutput()
@ -66,7 +72,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 	data["output"] = template.HTML(string(out))
 	if nil != err {
-		result.Succ = false
+		result.Code = -1
 		return
 	}
--- a/playground/file.go
+++ b/playground/file.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -23,19 +23,24 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
 	"strings"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/session"
 )
 // SaveHandler handles request of Playground code save.
 func SaveHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
-	session, _ := session.HTTPSession.Get(r, "wide-session")
+	if conf.Wide.ReadOnly {
 		result.Code = -1
 		result.Msg = "readonly mode"
 		return
 	}
 	session, _ := session.HTTPSession.Get(r, session.CookieName)
 	if session.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
@ -45,7 +50,7 @@ func SaveHandler(w http.ResponseWriter, r *http.Request) {
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -58,7 +63,7 @@ func SaveHandler(w http.ResponseWriter, r *http.Request) {
 	stdin, err := cmd.StdinPipe()
 	if nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -85,54 +90,13 @@ func SaveHandler(w http.ResponseWriter, r *http.Request) {
 	data["fileName"] = fileName
 	// Step3. write file
-	filePath := filepath.Clean(conf.Wide.Playground + "/" + fileName)
+	filePath := filepath.Clean(conf.Wide.Data + "/playground/" + fileName)
 	fout, err := os.Create(filePath)
 	fout.WriteString(code)
 	if err := fout.Close(); nil != err {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 }
 // ShortURLHandler handles request of short URL.
 func ShortURLHandler(w http.ResponseWriter, r *http.Request) {
 	result := util.NewResult()
 	defer util.RetResult(w, r, result)
 	session, _ := session.HTTPSession.Get(r, "wide-session")
 	if session.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	url := args["url"].(string)
 	resp, _ := http.Post("http://dwz.cn/create.php", "application/x-www-form-urlencoded",
 		strings.NewReader("url="+url))
 	var response map[string]interface{}
 	if err := json.NewDecoder(resp.Body).Decode(&response); err != nil {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	shortURL := url
 	if 0 == response["status"].(float64) {
 		shortURL = response["tinyurl"].(string)
 	}
 	result.Data = shortURL
 }
--- a/playground/playgrounds.go
+++ b/playground/playgrounds.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -26,43 +26,40 @@ import (
 	"strings"
 	"time"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/log"
+	"github.com/88250/wide/i18n"
-	"github.com/b3log/wide/session"
+	"github.com/88250/wide/session"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/util"
 	"github.com/gorilla/websocket"
 )
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 // IndexHandler handles request of Playground index.
 func IndexHandler(w http.ResponseWriter, r *http.Request) {
 	// create a HTTP session
-	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
 	if httpSession.IsNew {
 		httpSession.Values["id"] = strconv.Itoa(rand.Int())
-		httpSession.Values["username"] = "playground"
+		httpSession.Values["uid"] = "playground"
 	}
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
 	locale := conf.Wide.Locale
 	// try to load file
 	code := conf.HelloWorld
-	fileName := "8b7cc38b4c12e6fde5c4d15a4f2f32e5.go" // MD5 of HelloWorld.go
+	fileName := "6c5595ec6fbadf4cfce3edbfcfd8c6d0.go" // MD5 of HelloWorld.go
 	if strings.HasSuffix(r.URL.Path, ".go") {
 		fileNameArg := r.URL.Path[len("/playground/"):]
-		filePath := filepath.Clean(conf.Wide.Playground + "/" + fileNameArg)
+		filePath := filepath.Clean(conf.Wide.Data + "/playground/" + fileNameArg)
 		bytes, err := ioutil.ReadFile(filePath)
 		if nil != err {
@ -92,15 +89,14 @@ func IndexHandler(w http.ResponseWriter, r *http.Request) {
 		"code":          template.HTML(code), "ver": conf.WideVersion, "year": time.Now().Year(),
 		"embed": embed, "disqus": disqus, "fileName": fileName}
-	wideSessions := session.WideSessions.GetByUsername(username)
+	wideSessions := session.WideSessions.GetByUserId(uid)
-	logger.Debugf("User [%s] has [%d] sessions", username, len(wideSessions))
+	logger.Debugf("User [%s] has [%d] sessions", uid, len(wideSessions))
 	t, err := template.ParseFiles("views/playground/index.html")
 	if nil != err {
 		logger.Error(err)
-		http.Error(w, err.Error(), 500)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
--- a/playground/run.go
+++ b/playground/run.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -15,264 +15,16 @@
 package playground
 import (
-	"bufio"
+	"github.com/88250/wide/session"
 	"encoding/json"
 	"math/rand"
 	"net/http"
 	"os/exec"
 	"time"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/output"
 	"github.com/b3log/wide/session"
 	"github.com/b3log/wide/util"
 )
 const (
 	outputBufMax   = 1024 // 1024 string(rune)
 	outputTimeout  = 100  // 100ms
 	outputCountMax = 30   // 30 reads
 )
 type outputBuf struct {
 	content     string
 	millisecond int64
 }
 // RunHandler handles request of executing a binary file.
 func RunHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	session.RunHandler(w, r, session.PlaygroundWS)
 	defer util.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 }
-	sid := args["sid"].(string)
+// StopHandler handles request of stopping a running process.
 	wSession := session.WideSessions.Get(sid)
 	if nil == wSession {
 		result.Succ = false
 	}
 	filePath := args["executable"].(string)
 	cmd := exec.Command(filePath)
 	if conf.Docker {
 		output.SetNamespace(cmd)
 	}
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 	}
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 	}
 	outReader := bufio.NewReader(stdout)
 	errReader := bufio.NewReader(stderr)
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
 		result.Succ = false
 	}
 	wsChannel := session.PlaygroundWS[sid]
 	channelRet := map[string]interface{}{}
 	if !result.Succ {
 		if nil != wsChannel {
 			channelRet["cmd"] = "run-done"
 			channelRet["output"] = ""
 			err := wsChannel.WriteJSON(&channelRet)
 			if nil != err {
 				logger.Warn(err)
 				return
 			}
 			wsChannel.Refresh()
 		}
 		return
 	}
 	channelRet["pid"] = cmd.Process.Pid
 	// add the process to user's process set
 	output.Processes.Add(wSession, cmd.Process)
 	go func(runningId int) {
 		defer util.Recover()
 		defer cmd.Wait()
 		logger.Debugf("User [%s, %s] is running [id=%d, file=%s]", wSession.Username, sid, runningId, filePath)
 		// push once for front-end to get the 'run' state and pid
 		if nil != wsChannel {
 			channelRet["cmd"] = "run"
 			channelRet["output"] = ""
 			err := wsChannel.WriteJSON(&channelRet)
 			if nil != err {
 				logger.Warn(err)
 				return
 			}
 			wsChannel.Refresh()
 		}
 		go func() {
 			defer util.Recover()
 			buf := outputBuf{}
 			count := 0
 			for {
 				wsChannel := session.PlaygroundWS[sid]
 				if nil == wsChannel {
 					break
 				}
 				r, _, err := outReader.ReadRune()
 				count++
 				if nil != err {
 					// remove the exited process from user process set
 					output.Processes.Remove(wSession, cmd.Process)
 					logger.Debugf("User [%s, %s] 's running [id=%d, file=%s] has done [stdout %v], ", wSession.Username, sid, runningId, filePath, err)
 					channelRet["cmd"] = "run-done"
 					channelRet["output"] = buf.content
 					err := wsChannel.WriteJSON(&channelRet)
 					if nil != err {
 						logger.Warn(err)
 						break
 					}
 					wsChannel.Refresh()
 					break
 				}
 				oneRuneStr := string(r)
 				buf.content += oneRuneStr
 				now := time.Now().UnixNano() / int64(time.Millisecond)
 				if 0 == buf.millisecond {
 					buf.millisecond = now
 				}
 				flood := count > outputCountMax
 				if "\n" == oneRuneStr && !flood {
 					channelRet["cmd"] = "run"
 					channelRet["output"] = buf.content
 					buf = outputBuf{} // a new buffer
 					count = 0         // clear count
 					err = wsChannel.WriteJSON(&channelRet)
 					if nil != err {
 						logger.Warn(err)
 						break
 					}
 					wsChannel.Refresh()
 					continue
 				}
 				if now-outputTimeout >= buf.millisecond || len(buf.content) > outputBufMax {
 					channelRet["cmd"] = "run"
 					channelRet["output"] = buf.content
 					buf = outputBuf{} // a new buffer
 					count = 0         // clear count
 					err = wsChannel.WriteJSON(&channelRet)
 					if nil != err {
 						logger.Warn(err)
 						break
 					}
 					wsChannel.Refresh()
 					continue
 				}
 			}
 		}()
 		buf := outputBuf{}
 		for {
 			r, _, err := errReader.ReadRune()
 			wsChannel := session.PlaygroundWS[sid]
 			if nil != err || nil == wsChannel {
 				break
 			}
 			oneRuneStr := string(r)
 			buf.content += oneRuneStr
 			now := time.Now().UnixNano() / int64(time.Millisecond)
 			if 0 == buf.millisecond {
 				buf.millisecond = now
 			}
 			if now-outputTimeout >= buf.millisecond || len(buf.content) > outputBufMax || oneRuneStr == "\n" {
 				channelRet["cmd"] = "run"
 				channelRet["output"] = buf.content
 				buf = outputBuf{} // a new buffer
 				err = wsChannel.WriteJSON(&channelRet)
 				if nil != err {
 					logger.Warn(err)
 					break
 				}
 				wsChannel.Refresh()
 			}
 		}
 	}(rand.Int())
 }
 // StopHandler handles request of stoping a running process.
 func StopHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	session.StopHandler(w, r)
 	defer util.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	sid := args["sid"].(string)
 	pid := int(args["pid"].(float64))
 	wSession := session.WideSessions.Get(sid)
 	if nil == wSession {
 		result.Succ = false
 		return
 	}
 	output.Processes.Kill(wSession, pid)
 }
--- a/scm/git/clone.go
+++ b/scm/git/clone.go
@ -1,146 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 package git
 import (
 	"bufio"
 	"encoding/json"
 	"io"
 	"io/ioutil"
 	"math/rand"
 	"net/http"
 	"os"
 	"os/exec"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
 	"github.com/b3log/wide/log"
 	"github.com/b3log/wide/session"
 	"github.com/b3log/wide/util"
 )
 // Logger.
 var logger = log.NewLogger(os.Stdout)
 // Clone handles request of git clone.
 func CloneHandler(w http.ResponseWriter, r *http.Request) {
 	result := util.NewResult()
 	defer util.RetResult(w, r, result)
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	username := httpSession.Values["username"].(string)
 	locale := conf.GetUser(username).Locale
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	sid := args["sid"].(string)
 	path := args["path"].(string)
 	repository := args["repository"].(string)
 	cmd := exec.Command("git", "clone", repository)
 	cmd.Dir = path
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	if !result.Succ {
 		return
 	}
 	channelRet := map[string]interface{}{}
 	if nil != session.OutputWS[sid] {
 		// display "START [git clone]" in front-end browser
 		channelRet["output"] = "<span class='start-get'>" + i18n.Get(locale, "start-git_clone").(string) + "</span>\n"
 		channelRet["cmd"] = "start-git_clone"
 		wsChannel := session.OutputWS[sid]
 		err := wsChannel.WriteJSON(&channelRet)
 		if nil != err {
 			logger.Warn(err)
 			return
 		}
 		wsChannel.Refresh()
 	}
 	reader := bufio.NewReader(io.MultiReader(stdout, stderr))
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	go func(runningId int) {
 		defer util.Recover()
 		defer cmd.Wait()
 		logger.Debugf("User [%s, %s] is running [git clone] [runningId=%d]", username, sid, runningId)
 		channelRet := map[string]interface{}{}
 		channelRet["cmd"] = "git clone"
 		// read all
 		buf, err := ioutil.ReadAll(reader)
 		if nil != err {
 			logger.Warn(err)
 			// TODO: handle clone error
 		}
 		logger.Debugf("User [%s, %s] 's running [git clone] [runningId=%d] has done: %s", username, sid, runningId, string(buf))
 		channelRet["output"] = "<span class='get-succ'>" + i18n.Get(locale, "git_clone-done").(string) + "</span>\n"
 		if nil != session.OutputWS[sid] {
 			wsChannel := session.OutputWS[sid]
 			err := wsChannel.WriteJSON(&channelRet)
 			if nil != err {
 				logger.Warn(err)
 			}
 			wsChannel.Refresh()
 		}
 	}(rand.Int())
 }
--- a/session/oauth.go
+++ b/session/oauth.go
@ -0,0 +1,185 @@
 // Copyright (c) 2014-present, b3log.org
 //
 // 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
 //
 //     https://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.
 package session
 import (
 	"fmt"
 	"html/template"
 	"math/rand"
 	"net/http"
 	"os"
 	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
 	"github.com/88250/gulu"
 	"github.com/88250/wide/conf"
 	"github.com/88250/wide/i18n"
 	"github.com/88250/wide/util"
 )
 var states = map[string]string{}
 // LoginRedirectHandler redirects to HacPai auth page.
 func LoginRedirectHandler(w http.ResponseWriter, r *http.Request) {
 	loginAuthURL := conf.Wide.OAuthLoginURL + "?response_type=code&redirect_uri=" + conf.Wide.Server + "/login/callback"
 	// надо будет добавить ttlcache для state и проверять для предотвращения атак CSRF
 	state := gulu.Rand.String(16)
 	states[state] = state
 	path := loginAuthURL + "&state=" + state + "&client_id=" + conf.Wide.OAuthClientID
 	http.Redirect(w, r, path, http.StatusSeeOther)
 }
 func LoginCallbackHandler(w http.ResponseWriter, r *http.Request) {
 	state := r.URL.Query().Get("state")
 	if _, exist := states[state]; !exist {
 		http.Error(w, "Get state param failed", http.StatusBadRequest)
 		return
 	}
 	delete(states, state)
 	code := r.URL.Query().Get("code")
 	accessToken, err := util.GetOAuthToken(
 		conf.Wide.OAuthAccessTokenURL,
 		conf.Wide.OAuthClientID,
 		conf.Wide.OAuthClientSecret,
 		code,
 		conf.Wide.Server+`/login/callback`)
 	if err != nil {
 		http.Error(w, fmt.Sprintf(`get access_token failed. error: %s`, err.Error()), http.StatusBadRequest)
 		return
 	}
 	userInfo, err := util.OpenIdUserInfo(conf.Wide.OAuthUserInfoURL, accessToken)
 	if err != nil {
 		http.Error(w, fmt.Sprintf(`get user_info failed. error: %s`, err.Error()), http.StatusBadRequest)
 		return
 	}
 	userId := userInfo["userId"].(string)
 	userName := userInfo["userName"].(string)
 	avatar := userInfo["avatar"].(string)
 	user := conf.GetUser(userId)
 	if nil == user {
 		msg := addUser(userId, userName, avatar)
 		if userCreated != msg {
 			result := gulu.Ret.NewResult()
 			result.Code = -1
 			result.Msg = msg
 			gulu.Ret.RetResult(w, r, result)
 			return
 		}
 	}
 	// create a HTTP session
 	httpSession, _ := HTTPSession.Get(r, CookieName)
 	httpSession.Values["uid"] = userId
 	httpSession.Values["id"] = strconv.Itoa(rand.Int())
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	httpSession.Save(r, w)
 	http.Redirect(w, r, "/", http.StatusSeeOther)
 }
 // LoginHandler handles request of show login page.
 func LoginHandler(w http.ResponseWriter, r *http.Request) {
 	model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(conf.Wide.Locale),
 		"locale": conf.Wide.Locale, "ver": conf.WideVersion, "year": time.Now().Year()}
 	t, err := template.ParseFiles("views/login.html")
 	if nil != err {
 		logger.Error(err)
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	t.Execute(w, model)
 }
 // LogoutHandler handles request of user logout (exit).
 func LogoutHandler(w http.ResponseWriter, r *http.Request) {
 	result := gulu.Ret.NewResult()
 	defer gulu.Ret.RetResult(w, r, result)
 	httpSession, _ := HTTPSession.Get(r, CookieName)
 	httpSession.Options.MaxAge = -1
 	httpSession.Save(r, w)
 }
 // addUser add a user with the specified user id, username and avatar.
 //
 //  1. create the user's workspace
 //  2. generate 'Hello, 世界' demo code in the workspace (a console version and a HTTP version)
 //  3. update the user customized configurations, such as style.css
 //  4. serve files of the user's workspace via HTTP
 //
 // Note: user [playground] is a reserved mock user
 func addUser(userId, userName, userAvatar string) string {
 	if "playground" == userId {
 		return userExists
 	}
 	addUserMutex.Lock()
 	defer addUserMutex.Unlock()
 	for _, user := range conf.Users {
 		if strings.ToLower(user.Id) == strings.ToLower(userId) {
 			return userExists
 		}
 	}
 	workspace := filepath.Join(conf.Wide.Data, "workspaces", userId)
 	newUser := conf.NewUser(userId, userName, userAvatar, workspace)
 	conf.Users = append(conf.Users, newUser)
 	if !newUser.Save() {
 		return userCreateError
 	}
 	conf.CreateWorkspaceDir(workspace)
 	helloWorld(workspace)
 	conf.UpdateCustomizedConf(userId)
 	logger.Infof("Created a user [%s]", userId)
 	return userCreated
 }
 // helloWorld generates the 'Hello, 世界' source code.
 func helloWorld(workspace string) {
 	dir := workspace + conf.PathSeparator + "src" + conf.PathSeparator + "hello"
 	if err := os.MkdirAll(dir, 0755); nil != err {
 		logger.Error(err)
 		return
 	}
 	fout, err := os.Create(dir + conf.PathSeparator + "main.go")
 	if nil != err {
 		logger.Error(err)
 		return
 	}
 	fout.WriteString(conf.HelloWorld)
 	fout.Close()
 }
--- a/session/processes.go
+++ b/session/processes.go
@ -0,0 +1,313 @@
 // Copyright (c) 2014-present, b3log.org
 //
 // 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
 //
 //     https://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.
 package session
 import (
 	"bytes"
 	"encoding/json"
 	"math/rand"
 	"net/http"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
 	"github.com/88250/gulu"
 	"github.com/88250/wide/conf"
 	"github.com/88250/wide/util"
 )
 // Type of process set.
 type procs map[string][]*os.Process
 // Processse of all users.
 //
 // <sid, []*os.Process>
 var Processes = procs{}
 // Exclusive lock.
 var procMutex sync.Mutex
 // RunHandler handles request of executing a binary file.
 func RunHandler(w http.ResponseWriter, r *http.Request, channel map[string]*util.WSChannel) {
 	result := gulu.Ret.NewResult()
 	defer gulu.Ret.RetResult(w, r, result)
 	if conf.Wide.ReadOnly {
 		result.Code = -1
 		result.Msg = "readonly mode"
 		return
 	}
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Code = -1
 	}
 	sid := args["sid"].(string)
 	wSession := WideSessions.Get(sid)
 	if nil == wSession {
 		result.Code = -1
 	}
 	filePath := args["executable"].(string)
 	randInt := rand.Int()
 	rid := strconv.Itoa(randInt)
 	var cmd *exec.Cmd
 	if conf.Docker {
 		fileName := filepath.Base(filePath)
 		cmd = exec.Command("docker", "run", "--rm", "--name", rid, "-v", filePath+":/"+fileName,
 			"--memory", "64M", "--cpus", "0.1",
 			conf.DockerImageGo, "/"+fileName)
 	} else {
 		cmd = exec.Command(filePath)
 		curDir := filepath.Dir(filePath)
 		cmd.Dir = curDir
 	}
 	outBuf := &bytes.Buffer{}
 	errBuf := &bytes.Buffer{}
 	cmd.Stdout = outBuf
 	cmd.Stderr = errBuf
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
 		result.Code = -1
 	}
 	wsChannel := channel[sid]
 	channelRet := map[string]interface{}{}
 	if 0 != result.Code {
 		channelRet["cmd"] = "run-done"
 		channelRet["output"] = ""
 		wsChannel.WriteJSON(&channelRet)
 		wsChannel.Refresh()
 		return
 	}
 	done := make(chan error)
 	go func() { done <- cmd.Wait() }()
 	channelRet["pid"] = cmd.Process.Pid
 	Processes.Add(wSession, cmd.Process)
 	shouldExitBuf := false
 	// push once for front-end to get the 'run' state and pid
 	if nil != wsChannel {
 		channelRet["cmd"] = "run"
 		channelRet["output"] = ""
 		if nil != wsChannel {
 			wsChannel.WriteJSON(&channelRet)
 			wsChannel.Refresh()
 		}
 	}
 	go func() {
 		defer gulu.Panic.Recover(nil)
 		logger.Debugf("User [%s, %s] is running [id=%s, file=%s]", wSession.UserId, sid, rid, filePath)
 		go func() {
 			defer gulu.Panic.Recover(nil)
 			for {
 				if shouldExitBuf {
 					break
 				}
 				if 1 > outBuf.Len() {
 					time.Sleep(7 * time.Millisecond)
 					continue
 				}
 				r, _, err := outBuf.ReadRune()
 				if nil != err {
 					time.Sleep(7 * time.Millisecond)
 					continue
 				}
 				oneRuneStr := string(r)
 				oneRuneStr = strings.Replace(oneRuneStr, "<", "&lt;", -1)
 				oneRuneStr = strings.Replace(oneRuneStr, ">", "&gt;", -1)
 				channelRet["cmd"] = "run"
 				channelRet["output"] = oneRuneStr
 				wsChannel := channel[sid]
 				if nil != wsChannel {
 					wsChannel.WriteJSON(&channelRet)
 					wsChannel.Refresh()
 				}
 			}
 		}()
 		for {
 			if shouldExitBuf {
 				break
 			}
 			if 1 > errBuf.Len() {
 				time.Sleep(7 * time.Millisecond)
 				continue
 			}
 			r, _, err := errBuf.ReadRune()
 			if nil != err {
 				time.Sleep(7 * time.Millisecond)
 				continue
 			}
 			oneRuneStr := string(r)
 			oneRuneStr = strings.Replace(oneRuneStr, "<", "&lt;", -1)
 			oneRuneStr = strings.Replace(oneRuneStr, ">", "&gt;", -1)
 			channelRet["cmd"] = "run"
 			channelRet["output"] = "<span class='stderr'>" + oneRuneStr + "</span>"
 			wsChannel := channel[sid]
 			if nil != wsChannel {
 				wsChannel.WriteJSON(&channelRet)
 				wsChannel.Refresh()
 			}
 		}
 	}()
 	after := time.After(5 * time.Second)
 	kill := false
 	select {
 	case <-after:
 		if conf.Docker {
 			killCmd := exec.Command("docker", "rm", "-f", rid)
 			if err := killCmd.Run(); nil != err {
 				logger.Errorf("executes [docker rm -f " + rid + "] failed [" + err.Error() + "], this will cause resource leaking")
 			}
 		} else {
 			cmd.Process.Kill()
 		}
 		channelRet["output"] = "\n<span class='stderr'>run program timeout in 5s</span>\n"
 		kill = true
 	case <-done:
 		channelRet["output"] = "\n<span class='stderr'>run program complete</span>\n"
 	}
 	shouldExitBuf = true
 	Processes.Remove(wSession, cmd.Process)
 	logger.Debugf("User [%s, %s] done running [id=%s, file=%s, kill=%v]", wSession.UserId, sid, rid, filePath, kill)
 	if nil != wsChannel {
 		channelRet["cmd"] = "run-done"
 		wsChannel.WriteJSON(&channelRet)
 		wsChannel.Refresh()
 	}
 }
 // StopHandler handles request of stopping a running process.
 func StopHandler(w http.ResponseWriter, r *http.Request) {
 	result := gulu.Ret.NewResult()
 	defer gulu.Ret.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Code = -1
 		return
 	}
 	sid := args["sid"].(string)
 	pid := int(args["pid"].(float64))
 	wSession := WideSessions.Get(sid)
 	if nil == wSession {
 		result.Code = -1
 		return
 	}
 	Processes.Kill(wSession, pid)
 }
 // Add adds the specified process to the user process set.
 func (procs *procs) Add(wSession *WideSession, proc *os.Process) {
 	procMutex.Lock()
 	defer procMutex.Unlock()
 	sid := wSession.ID
 	userProcesses := (*procs)[sid]
 	userProcesses = append(userProcesses, proc)
 	(*procs)[sid] = userProcesses
 	// bind process with wide session
 	wSession.SetProcesses(userProcesses)
 	logger.Tracef("Session [%s] has [%d] processes", sid, len((*procs)[sid]))
 }
 // Remove removes the specified process from the user process set.
 func (procs *procs) Remove(wSession *WideSession, proc *os.Process) {
 	procMutex.Lock()
 	defer procMutex.Unlock()
 	sid := wSession.ID
 	userProcesses := (*procs)[sid]
 	var newProcesses []*os.Process
 	for i, p := range userProcesses {
 		if p.Pid == proc.Pid {
 			newProcesses = append(userProcesses[:i], userProcesses[i+1:]...) // remove it
 			(*procs)[sid] = newProcesses
 			// bind process with wide session
 			wSession.SetProcesses(newProcesses)
 			logger.Tracef("Session [%s] has [%d] processes", sid, len((*procs)[sid]))
 			return
 		}
 	}
 }
 // Kill kills a process specified by the given pid.
 func (procs *procs) Kill(wSession *WideSession, pid int) {
 	procMutex.Lock()
 	defer procMutex.Unlock()
 	sid := wSession.ID
 	userProcesses := (*procs)[sid]
 	for i, p := range userProcesses {
 		if p.Pid == pid {
 			if err := p.Kill(); nil != err {
 				logger.Errorf("Kill a process [pid=%d] of user [%s, %s] failed [error=%v]", pid, wSession.UserId, sid, err)
 			} else {
 				var newProcesses []*os.Process
 				newProcesses = append(userProcesses[:i], userProcesses[i+1:]...)
 				(*procs)[sid] = newProcesses
 				// bind process with wide session
 				wSession.SetProcesses(newProcesses)
 				logger.Debugf("Killed a process [pid=%d] of user [%s, %s]", pid, wSession.UserId, sid)
 			}
 			return
 		}
 	}
 }
--- a/session/sessions.go
+++ b/session/sessions.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -31,14 +31,15 @@ import (
 	"path/filepath"
 	"sort"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/event"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/log"
+	"github.com/88250/wide/event"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/util"
-	"github.com/go-fsnotify/fsnotify"
+	"github.com/fsnotify/fsnotify"
 	"github.com/gorilla/sessions"
 	"github.com/gorilla/websocket"
 )
@ -46,10 +47,12 @@ import (
 const (
 	sessionStateActive = iota
 	sessionStateClosed // (not used so far)
 	CookieName = "wide-sess"
 )
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 var (
 	// SessionWS holds all session channels. <sid, *util.WSChannel>
@ -74,7 +77,7 @@ var HTTPSession = sessions.NewCookieStore([]byte("BEYOND"))
 // WideSession represents a session associated with a browser tab.
 type WideSession struct {
 	ID          string                     // id
-	Username    string                     // username
+	UserId      string                     // user id
 	HTTPSession *sessions.Session          // HTTP session related
 	Processes   []*os.Process              // process set
 	EventQueue  *event.UserEventQueue      // event queue
@ -102,7 +105,7 @@ var mutex sync.Mutex
 // Invalid sessions: sessions that not used within 30 minutes, refers to WideSession.Updated field.
 func FixedTimeRelease() {
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		for _ = range time.Tick(time.Hour) {
 			hour, _ := time.ParseDuration("-30m")
@ -110,7 +113,7 @@ func FixedTimeRelease() {
 			for _, s := range WideSessions {
 				if s.Updated.Before(threshold) {
-					logger.Debugf("Removes a invalid session [%s], user [%s]", s.ID, s.Username)
+					logger.Debugf("Removes a invalid session [%s], user [%s]", s.ID, s.UserId)
 					WideSessions.Remove(s.ID)
 				}
@ -121,7 +124,7 @@ func FixedTimeRelease() {
 // Online user statistic report.
 type userReport struct {
-	username   string
+	userId     string
 	sessionCnt int
 	processCnt int
 	updated    time.Time
@ -129,14 +132,14 @@ type userReport struct {
 // report returns a online user statistics in pretty format.
 func (u *userReport) report() string {
-	return "[" + u.username + "] has [" + strconv.Itoa(u.sessionCnt) + "] sessions and [" + strconv.Itoa(u.processCnt) +
+	return "[" + u.userId + "] has [" + strconv.Itoa(u.sessionCnt) + "] sessions and [" + strconv.Itoa(u.processCnt) +
 		"] running processes, latest activity [" + u.updated.Format("2006-01-02 15:04:05") + "]"
 }
 // FixedTimeReport reports the Wide sessions status periodically (10 minutes).
 func FixedTimeReport() {
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		for _ = range time.Tick(10 * time.Minute) {
 			users := userReports{}
@ -146,7 +149,7 @@ func FixedTimeReport() {
 				processCnt := len(s.Processes)
 				processSum += processCnt
-				if report, exists := contains(users, s.Username); exists {
+				if report, exists := contains(users, s.UserId); exists {
 					if s.Updated.After(report.updated) {
 						report.updated = s.Updated
 					}
@ -154,7 +157,7 @@ func FixedTimeReport() {
 					report.sessionCnt++
 					report.processCnt += processCnt
 				} else {
-					users = append(users, &userReport{username: s.Username, sessionCnt: 1, processCnt: processCnt, updated: s.Updated})
+					users = append(users, &userReport{userId: s.UserId, sessionCnt: 1, processCnt: processCnt, updated: s.Updated})
 				}
 			}
@ -173,9 +176,9 @@ func FixedTimeReport() {
 	}()
 }
-func contains(reports []*userReport, username string) (*userReport, bool) {
+func contains(reports []*userReport, userId string) (*userReport, bool) {
 	for _, ur := range reports {
-		if username == ur.username {
+		if userId == ur.userId {
 			return ur, true
 		}
 	}
@ -219,7 +222,7 @@ func WSHandler(w http.ResponseWriter, r *http.Request) {
 	wSession := WideSessions.Get(sid)
 	if nil == wSession {
-		httpSession, _ := HTTPSession.Get(r, "wide-session")
+		httpSession, _ := HTTPSession.Get(r, CookieName)
 		if httpSession.IsNew {
 			return
@ -230,7 +233,7 @@ func WSHandler(w http.ResponseWriter, r *http.Request) {
 		wSession = WideSessions.new(httpSession, sid)
-		logger.Tracef("Created a wide session [%s] for websocket reconnecting, user [%s]", sid, wSession.Username)
+		logger.Tracef("Created a wide session [%s] for websocket reconnecting, user [%s]", sid, wSession.UserId)
 	}
 	logger.Tracef("Open a new [Session Channel] with session [%s], %d", sid, len(SessionWS))
@ -262,7 +265,7 @@ func WSHandler(w http.ResponseWriter, r *http.Request) {
 	for {
 		if err := wsChan.ReadJSON(&input); err != nil {
-			logger.Tracef("[Session Channel] of session [%s] disconnected, releases all resources with it, user [%s]", sid, wSession.Username)
+			logger.Tracef("[Session Channel] of session [%s] disconnected, releases all resources with it, user [%s]", sid, wSession.UserId)
 			return
 		}
@ -281,8 +284,8 @@ func WSHandler(w http.ResponseWriter, r *http.Request) {
 // SaveContentHandler handles request of session content string.
 func SaveContentHandler(w http.ResponseWriter, r *http.Request) {
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	args := struct {
 		Sid string
@ -291,14 +294,14 @@ func SaveContentHandler(w http.ResponseWriter, r *http.Request) {
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
 	wSession := WideSessions.Get(args.Sid)
 	if nil == wSession {
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -306,7 +309,7 @@ func SaveContentHandler(w http.ResponseWriter, r *http.Request) {
 	wSession.Content = args.LatestSessionContent
 	for _, user := range conf.Users {
-		if user.Name == wSession.Username {
+		if user.Id == wSession.UserId {
 			// update the variable in-memory, session.FixedTimeSave() function will persist it periodically
 			user.LatestSessionContent = wSession.Content
@ -375,9 +378,9 @@ func (sessions *wSessions) Remove(sid string) {
 			// kill processes
 			for _, p := range s.Processes {
 				if err := p.Kill(); nil != err {
-					logger.Errorf("Can't kill process [%d] of session [%s], user [%s]", p.Pid, sid, s.Username)
+					logger.Errorf("Can't kill process [%d] of session [%s], user [%s]", p.Pid, sid, s.UserId)
 				} else {
-					logger.Debugf("Killed a process [%d] of session [%s], user [%s]", p.Pid, sid, s.Username)
+					logger.Debugf("Killed a process [%d] of session [%s], user [%s]", p.Pid, sid, s.UserId)
 				}
 			}
@ -409,12 +412,12 @@ func (sessions *wSessions) Remove(sid string) {
 			cnt := 0 // count wide sessions associated with HTTP session
 			for _, ses := range *sessions {
-				if ses.Username == s.Username {
+				if ses.UserId == s.UserId {
 					cnt++
 				}
 			}
-			logger.Debugf("Removed a session [%s] of user [%s], it has [%d] sessions currently", sid, s.Username, cnt)
+			logger.Debugf("Removed a session [%s] of user [%s], it has [%d] sessions currently", sid, s.UserId, cnt)
 			return
 		}
@ -422,14 +425,14 @@ func (sessions *wSessions) Remove(sid string) {
 }
 // GetByUsername gets wide sessions.
-func (sessions *wSessions) GetByUsername(username string) []*WideSession {
+func (sessions *wSessions) GetByUserId(userId string) []*WideSession {
 	mutex.Lock()
 	defer mutex.Unlock()
 	ret := []*WideSession{}
 	for _, s := range *sessions {
-		if s.Username == username {
+		if s.UserId == userId {
 			ret = append(ret, s)
 		}
 	}
@ -442,12 +445,12 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 	mutex.Lock()
 	defer mutex.Unlock()
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
 	now := time.Now()
 	ret := &WideSession{
 		ID:          sid,
-		Username:    username,
+		UserId:      uid,
 		HTTPSession: httpSession,
 		EventQueue:  nil,
 		State:       sessionStateActive,
@ -458,7 +461,7 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 	*sessions = append(*sessions, ret)
-	if "playground" == username {
+	if "playground" == uid {
 		return ret
 	}
@ -474,12 +477,12 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 	}
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		for {
 			ch := SessionWS[sid]
 			if nil == ch {
-				return // release this gorutine
+				return // release this goroutine
 			}
 			select {
@ -489,7 +492,7 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 				ch = SessionWS[sid]
 				if nil == ch {
-					return // release this gorutine
+					return // release this goroutine
 				}
 				logger.Trace(event)
@ -497,7 +500,7 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 				if event.Op&fsnotify.Create == fsnotify.Create {
 					fileType := "f"
-					if util.File.IsDir(path) {
+					if gulu.File.IsDir(path) {
 						fileType = "d"
 						if err = watcher.Add(path); nil != err {
@ -505,17 +508,13 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 						}
 					}
-					cmd := map[string]interface{}{"path": path, "dir": dir,
+					cmd := map[string]interface{}{"path": path, "dir": dir, "cmd": "create-file", "type": fileType}
 						"cmd": "create-file", "type": fileType}
 					ch.WriteJSON(&cmd)
 				} else if event.Op&fsnotify.Remove == fsnotify.Remove {
-					cmd := map[string]interface{}{"path": path, "dir": dir,
+					cmd := map[string]interface{}{"path": path, "dir": dir, "cmd": "remove-file", "type": ""}
 						"cmd": "remove-file", "type": ""}
 					ch.WriteJSON(&cmd)
 				} else if event.Op&fsnotify.Rename == fsnotify.Rename {
-					cmd := map[string]interface{}{"path": path, "dir": dir,
+					cmd := map[string]interface{}{"path": path, "dir": dir, "cmd": "rename-file", "type": ""}
 						"cmd": "rename-file", "type": ""}
 					ch.WriteJSON(&cmd)
 				}
 			case err := <-watcher.Errors:
@ -527,12 +526,12 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 	}()
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
-		workspaces := filepath.SplitList(conf.GetUserWorkspace(username))
+		workspaces := filepath.SplitList(conf.GetUserWorkspace(uid))
 		for _, workspace := range workspaces {
 			filepath.Walk(filepath.Join(workspace, "src"), func(dirPath string, f os.FileInfo, err error) error {
-				if ".git" == f.Name() { // XXX: discard other unconcered dirs
+				if strings.HasPrefix(f.Name(), ".") || "node_modules" == f.Name() || "vendor" == f.Name() {
 					return filepath.SkipDir
 				}
--- a/session/users.go
+++ b/session/users.go
@ -1,10 +1,10 @@
-// Copyright (c) 2014-2016, b3log.org & hacpai.com
+// Copyright (c) 2014-present, b3log.org
 //
 // 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
+//     https://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,
@ -15,33 +15,26 @@
 package session
 import (
 	"crypto/md5"
 	"encoding/hex"
 	"encoding/json"
 	"math/rand"
 	"net/http"
 	"os"
 	"path/filepath"
 	"runtime"
 	"strconv"
 	"strings"
 	"sync"
 	"text/template"
 	"time"
-	"github.com/b3log/wide/conf"
+	"github.com/88250/gulu"
-	"github.com/b3log/wide/i18n"
+	"github.com/88250/wide/conf"
-	"github.com/b3log/wide/util"
+	"github.com/88250/wide/i18n"
 )
 const (
 	// TODO: i18n
 	userExists      = "user exists"
 	emailExists      = "email exists"
 	userCreated     = "user created"
 	userCreateError = "user create error"
 	notAllowRegister = "not allow register"
 )
 // Exclusive lock for adding user.
@ -49,57 +42,70 @@ var addUserMutex sync.Mutex
 // PreferenceHandler handles request of preference page.
 func PreferenceHandler(w http.ResponseWriter, r *http.Request) {
-	httpSession, _ := HTTPSession.Get(r, "wide-session")
+	httpSession, _ := HTTPSession.Get(r, CookieName)
 	if httpSession.IsNew {
-		http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
+		http.Redirect(w, r, "/login", http.StatusFound)
 		return
 	}
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
-	username := httpSession.Values["username"].(string)
+	uid := httpSession.Values["uid"].(string)
-	user := conf.GetUser(username)
+	user := conf.GetUser(uid)
 	if "GET" == r.Method {
 		tmpLinux := user.GoBuildArgsForLinux
 		tmpWindows := user.GoBuildArgsForWindows
 		tmpDarwin := user.GoBuildArgsForDarwin
 		user.GoBuildArgsForLinux = strings.Replace(user.GoBuildArgsForLinux, `"`, `&quot;`, -1)
 		user.GoBuildArgsForWindows = strings.Replace(user.GoBuildArgsForWindows, `"`, `&quot;`, -1)
 		user.GoBuildArgsForDarwin = strings.Replace(user.GoBuildArgsForDarwin, `"`, `&quot;`, -1)
 		model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(user.Locale), "user": user,
 			"ver": conf.WideVersion, "goos": runtime.GOOS, "goarch": runtime.GOARCH, "gover": runtime.Version(),
-			"locales": i18n.GetLocalesNames(), "gofmts": util.Go.GetGoFormats(),
+			"locales": i18n.GetLocalesNames(), "gofmts": gulu.Go.GetGoFormats(),
 			"themes": conf.GetThemes(), "editorThemes": conf.GetEditorThemes()}
 		t, err := template.ParseFiles("views/preference.html")
 		if nil != err {
 			logger.Error(err)
-			http.Error(w, err.Error(), 500)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
 			user.GoBuildArgsForLinux = tmpLinux
 			user.GoBuildArgsForWindows = tmpWindows
 			user.GoBuildArgsForDarwin = tmpDarwin
 			return
 		}
 		t.Execute(w, model)
 		user.GoBuildArgsForLinux = tmpLinux
 		user.GoBuildArgsForWindows = tmpWindows
 		user.GoBuildArgsForDarwin = tmpDarwin
 		return
 	}
 	// non-GET request as save request
-	result := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 	args := struct {
 		FontFamily            string
 		FontSize              string
 		GoFmt                 string
 		GoBuildArgsForLinux   string
 		GoBuildArgsForWindows string
 		GoBuildArgsForDarwin  string
 		Keymap                string
 		Workspace             string
 		Username              string
 		Password         string
 		Email            string
 		Locale                string
 		Theme                 string
 		EditorFontFamily      string
@ -111,7 +117,7 @@ func PreferenceHandler(w http.ResponseWriter, r *http.Request) {
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		result.Succ = false
+		result.Code = -1
 		return
 	}
@ -119,17 +125,12 @@ func PreferenceHandler(w http.ResponseWriter, r *http.Request) {
 	user.FontFamily = args.FontFamily
 	user.FontSize = args.FontSize
 	user.GoFormat = args.GoFmt
 	user.GoBuildArgsForLinux = args.GoBuildArgsForLinux
 	user.GoBuildArgsForWindows = args.GoBuildArgsForWindows
 	user.GoBuildArgsForDarwin = args.GoBuildArgsForDarwin
 	user.Keymap = args.Keymap
 	// XXX: disallow change workspace at present
 	// user.Workspace = args.Workspace
 	if user.Password != args.Password {
 		user.Password = conf.Salt(args.Password, user.Salt)
 	}
 	user.Email = args.Email
 	hash := md5.New()
 	hash.Write([]byte(user.Email))
 	user.Gravatar = hex.EncodeToString(hash.Sum(nil))
 	user.Locale = args.Locale
 	user.Theme = args.Theme
@ -139,144 +140,17 @@ func PreferenceHandler(w http.ResponseWriter, r *http.Request) {
 	user.Editor.Theme = args.EditorTheme
 	user.Editor.TabSize = args.EditorTabSize
-	conf.UpdateCustomizedConf(username)
+	conf.UpdateCustomizedConf(uid)
 	now := time.Now().UnixNano()
 	user.Lived = now
 	user.Updated = now
-	result.Succ = user.Save()
+	if user.Save() {
 		result.Code = 0
 	} else {
 		result.Code = -1
 	}
 // LoginHandler handles request of user login.
 func LoginHandler(w http.ResponseWriter, r *http.Request) {
 	if "GET" == r.Method {
 		// show the login page
 		model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(conf.Wide.Locale),
 			"locale": conf.Wide.Locale, "ver": conf.WideVersion, "year": time.Now().Year()}
 		t, err := template.ParseFiles("views/login.html")
 		if nil != err {
 			logger.Error(err)
 			http.Error(w, err.Error(), 500)
 			return
 		}
 		t.Execute(w, model)
 		return
 	}
 	// non-GET request as login request
 	result := util.NewResult()
 	defer util.RetResult(w, r, result)
 	args := struct {
 		Username string
 		Password string
 	}{}
 	args.Username = r.FormValue("username")
 	args.Password = r.FormValue("password")
 	result.Succ = false
 	for _, user := range conf.Users {
 		if user.Name == args.Username && user.Password == conf.Salt(args.Password, user.Salt) {
 			result.Succ = true
 			break
 		}
 	}
 	if !result.Succ {
 		return
 	}
 	// create a HTTP session
 	httpSession, _ := HTTPSession.Get(r, "wide-session")
 	httpSession.Values["username"] = args.Username
 	httpSession.Values["id"] = strconv.Itoa(rand.Int())
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
 	logger.Debugf("Created a HTTP session [%s] for user [%s]", httpSession.Values["id"].(string), args.Username)
 }
 // LogoutHandler handles request of user logout (exit).
 func LogoutHandler(w http.ResponseWriter, r *http.Request) {
 	result := util.NewResult()
 	defer util.RetResult(w, r, result)
 	httpSession, _ := HTTPSession.Get(r, "wide-session")
 	httpSession.Options.MaxAge = -1
 	httpSession.Save(r, w)
 }
 // SignUpUserHandler handles request of registering user.
 func SignUpUserHandler(w http.ResponseWriter, r *http.Request) {
 	if "GET" == r.Method {
 		// show the user sign up page
 		model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(conf.Wide.Locale),
 			"locale": conf.Wide.Locale, "ver": conf.WideVersion, "dir": conf.Wide.UsersWorkspaces,
 			"pathSeparator": conf.PathSeparator, "year": time.Now().Year()}
 		t, err := template.ParseFiles("views/sign_up.html")
 		if nil != err {
 			logger.Error(err)
 			http.Error(w, err.Error(), 500)
 			return
 		}
 		t.Execute(w, model)
 		return
 	}
 	// non-GET request as add user request
 	result := util.NewResult()
 	defer util.RetResult(w, r, result)
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
 		result.Succ = false
 		return
 	}
 	username := args["username"].(string)
 	password := args["password"].(string)
 	email := args["email"].(string)
 	msg := addUser(username, password, email)
 	if userCreated != msg {
 		result.Succ = false
 		result.Msg = msg
 		return
 	}
 	// create a HTTP session
 	httpSession, _ := HTTPSession.Get(r, "wide-session")
 	httpSession.Values["username"] = username
 	httpSession.Values["id"] = strconv.Itoa(rand.Int())
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
 }
 // FixedTimeSave saves online users' configurations periodically (1 minute).
@ -284,25 +158,19 @@ func SignUpUserHandler(w http.ResponseWriter, r *http.Request) {
 // Main goal of this function is to save user session content, for restoring session content while user open Wide next time.
 func FixedTimeSave() {
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover(nil)
 		for _ = range time.Tick(time.Minute) {
-			users := getOnlineUsers()
+			SaveOnlineUsers()
 			for _, u := range users {
 				if u.Save() {
 					logger.Tracef("Saved online user [%s]'s configurations", u.Name)
 				}
 			}
 		}
 	}()
 }
-// CanAccess determines whether the user specified by the given username can access the specified path.
+// CanAccess determines whether the user specified by the given user id can access the specified path.
-func CanAccess(username, path string) bool {
+func CanAccess(userId, path string) bool {
 	path = filepath.FromSlash(path)
-	userWorkspace := conf.GetUserWorkspace(username)
+	userWorkspace := conf.GetUserWorkspace(userId)
 	workspaces := filepath.SplitList(userWorkspace)
 	for _, workspace := range workspaces {
@ -314,23 +182,33 @@ func CanAccess(username, path string) bool {
 	return false
 }
 // SaveOnlineUsers saves online users' configurations at once.
 func SaveOnlineUsers() {
 	users := getOnlineUsers()
 	for _, u := range users {
 		if u.Save() {
 			logger.Tracef("Saved online user [%s]'s configurations", u.Name)
 		}
 	}
 }
 func getOnlineUsers() []*conf.User {
 	ret := []*conf.User{}
-	usernames := map[string]string{} // distinct username
+	uids := map[string]string{} // distinct uid
 	for _, s := range WideSessions {
-		usernames[s.Username] = s.Username
+		uids[s.UserId] = s.UserId
 	}
-	for _, username := range usernames {
+	for _, uid := range uids {
-		u := conf.GetUser(username)
+		u := conf.GetUser(uid)
-		if "playground" == username { // user [playground] is a reserved mock user
+		if "playground" == uid { // user [playground] is a reserved mock user
 			continue
 		}
 		if nil == u {
-			logger.Warnf("Not found user [%s]", username)
+			logger.Warnf("Not found user [%s]", uid)
 			continue
 		}
@ -340,135 +218,3 @@ func getOnlineUsers() []*conf.User {
 	return ret
 }
 // addUser add a user with the specified username, password and email.
 //
 //  1. create the user's workspace
 //  2. generate 'Hello, 世界' demo code in the workspace (a console version and a HTTP version)
 //  3. update the user customized configurations, such as style.css
 //  4. serve files of the user's workspace via HTTP
 //
 // Note: user [playground] is a reserved mock user
 func addUser(username, password, email string) string {
 	if !conf.Wide.AllowRegister {
 		return notAllowRegister
 	}
 	if "playground" == username {
 		return userExists
 	}
 	addUserMutex.Lock()
 	defer addUserMutex.Unlock()
 	for _, user := range conf.Users {
 		if strings.ToLower(user.Name) == strings.ToLower(username) {
 			return userExists
 		}
 		if strings.ToLower(user.Email) == strings.ToLower(email) {
 			return emailExists
 		}
 	}
 	workspace := filepath.Join(conf.Wide.UsersWorkspaces, username)
 	newUser := conf.NewUser(username, password, email, workspace)
 	conf.Users = append(conf.Users, newUser)
 	if !newUser.Save() {
 		return userCreateError
 	}
 	conf.CreateWorkspaceDir(workspace)
 	helloWorld(workspace)
 	conf.UpdateCustomizedConf(username)
 	http.Handle("/workspace/"+username+"/",
 		http.StripPrefix("/workspace/"+username+"/", http.FileServer(http.Dir(newUser.GetWorkspace()))))
 	logger.Infof("Created a user [%s]", username)
 	return userCreated
 }
 // helloWorld generates the 'Hello, 世界' source code.
 //  1. src/hello/main.go
 //  2. src/web/main.go
 func helloWorld(workspace string) {
 	consoleHello(workspace)
 	webHello(workspace)
 }
 func consoleHello(workspace string) {
 	dir := workspace + conf.PathSeparator + "src" + conf.PathSeparator + "hello"
 	if err := os.MkdirAll(dir, 0755); nil != err {
 		logger.Error(err)
 		return
 	}
 	fout, err := os.Create(dir + conf.PathSeparator + "main.go")
 	if nil != err {
 		logger.Error(err)
 		return
 	}
 	fout.WriteString(conf.HelloWorld)
 	fout.Close()
 }
 func webHello(workspace string) {
 	dir := workspace + conf.PathSeparator + "src" + conf.PathSeparator + "web"
 	if err := os.MkdirAll(dir, 0755); nil != err {
 		logger.Error(err)
 		return
 	}
 	fout, err := os.Create(dir + conf.PathSeparator + "main.go")
 	if nil != err {
 		logger.Error(err)
 		return
 	}
 	code := `package main
 import (
 	"fmt"
 	"math/rand"
 	"net/http"
 	"strconv"
 	"time"
 )
 func main() {
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		w.Write([]byte("Hello, 世界"))
 	})
 	port := getPort()
 	// you may need to change the address
 	fmt.Println("Open http://wide.b3log.org:" + port + " in your browser to see the result") 
 	if err := http.ListenAndServe(":"+port, nil); nil != err {
 		fmt.Println(err)
 	}
 }
 func getPort() string {
 	rand.Seed(time.Now().UnixNano())
 	return strconv.Itoa(7000 + rand.Intn(8000-7000))
 }
 `
 	fout.WriteString(code)
 	fout.Close()
 }
--- a/shell/shells.go
+++ b/shell/shells.go
@ -1,189 +0,0 @@
 // Copyright (c) 2014-2016, b3log.org & hacpai.com
 //
 // 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.
 // Package shell include shell related mainipulations.
 package shell
 import (
 	"html/template"
 	"net/http"
 	"os"
 	"os/exec"
 	"runtime"
 	"strings"
 	"time"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
 	"github.com/b3log/wide/log"
 	"github.com/b3log/wide/session"
 	"github.com/b3log/wide/util"
 	"github.com/gorilla/websocket"
 )
 // Shell channel.
 //
 // <sid, *util.WSChannel>>
 var ShellWS = map[string]*util.WSChannel{}
 // Logger.
 var logger = log.NewLogger(os.Stdout)
 // IndexHandler handles request of Shell index.
 func IndexHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
 	if httpSession.IsNew {
 		http.Redirect(w, r, conf.Wide.Context+"/login", http.StatusFound)
 		return
 	}
 	httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
 	if "" != conf.Wide.Context {
 		httpSession.Options.Path = conf.Wide.Context
 	}
 	httpSession.Save(r, w)
 	username := httpSession.Values["username"].(string)
 	locale := conf.GetUser(username).Locale
 	model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
 		"sid": session.WideSessions.GenId()}
 	wideSessions := session.WideSessions.GetByUsername(username)
 	logger.Tracef("User [%s] has [%d] sessions", username, len(wideSessions))
 	t, err := template.ParseFiles("views/shell.html")
 	if nil != err {
 		logger.Error(err)
 		http.Error(w, err.Error(), 500)
 		return
 	}
 	t.Execute(w, model)
 }
 // WSHandler handles request of creating Shell channel.
 func WSHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
 	if httpSession.IsNew {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 		return
 	}
 	username := httpSession.Values["username"].(string)
 	sid := r.URL.Query()["sid"][0]
 	conn, _ := websocket.Upgrade(w, r, nil, 1024, 1024)
 	wsChan := util.WSChannel{Sid: sid, Conn: conn, Request: r, Time: time.Now()}
 	ret := map[string]interface{}{"output": "Shell initialized", "cmd": "init-shell"}
 	err := wsChan.WriteJSON(&ret)
 	if nil != err {
 		return
 	}
 	ShellWS[sid] = &wsChan
 	logger.Debugf("Open a new [Shell] with session [%s], %d", sid, len(ShellWS))
 	input := map[string]interface{}{}
 	for {
 		if err := wsChan.ReadJSON(&input); err != nil {
 			logger.Error("Shell WS ERROR: " + err.Error())
 			return
 		}
 		inputCmd := input["cmd"].(string)
 		cmds := strings.Split(inputCmd, "|")
 		commands := []*exec.Cmd{}
 		for _, cmdWithArgs := range cmds {
 			cmdWithArgs = strings.TrimSpace(cmdWithArgs)
 			cmdWithArgs := strings.Split(cmdWithArgs, " ")
 			args := []string{}
 			if len(cmdWithArgs) > 1 {
 				args = cmdWithArgs[1:]
 			}
 			cmd := exec.Command(cmdWithArgs[0], args...)
 			commands = append(commands, cmd)
 		}
 		output := ""
 		if !strings.Contains(inputCmd, "clear") {
 			output = pipeCommands(username, commands...)
 		}
 		ret = map[string]interface{}{"output": output, "cmd": "shell-output"}
 		if err := wsChan.WriteJSON(&ret); err != nil {
 			logger.Error("Shell WS ERROR: " + err.Error())
 			return
 		}
 		wsChan.Refresh()
 	}
 }
 func pipeCommands(username string, commands ...*exec.Cmd) string {
 	for i, command := range commands[:len(commands)-1] {
 		setCmdEnv(command, username)
 		stdout, err := command.StdoutPipe()
 		if nil != err {
 			return err.Error()
 		}
 		command.Start()
 		commands[i+1].Stdin = stdout
 	}
 	last := commands[len(commands)-1]
 	setCmdEnv(last, username)
 	out, err := last.CombinedOutput()
 	// release resources
 	for _, command := range commands[:len(commands)-1] {
 		command.Wait()
 	}
 	if err != nil {
 		return err.Error()
 	}
 	return string(out)
 }
 func setCmdEnv(cmd *exec.Cmd, username string) {
 	userWorkspace := conf.GetUserWorkspace(username)
 	cmd.Env = append(cmd.Env,
 		"TERM="+os.Getenv("TERM"),
 		"GOPATH="+userWorkspace,
 		"GOOS="+runtime.GOOS,
 		"GOARCH="+runtime.GOARCH,
 		"GOROOT="+runtime.GOROOT(),
 		"PATH="+os.Getenv("PATH"))
 	cmd.Dir = userWorkspace
 }
--- a/static/css/about.css
+++ b/static/css/about.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
--- a/static/css/base.css
+++ b/static/css/base.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -18,7 +18,7 @@
 * themes for base.
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
- * @version 0.1.0.0, Dec 6, 2015
+ * @version 0.2.0.0, Oct 5, 2018
 */
 /* start reset & function */
 ::-webkit-scrollbar {
@ -140,18 +140,24 @@ button {
 /* start icon */
@font-face {
    font-family: 'icomoon';
-    src:url('fonts/icomoon.eot?35cb2z');
+    src:  url('fonts/icomoon.eot?lqk80d');
-    src:url('fonts/icomoon.eot?#iefix35cb2z') format('embedded-opentype'),
+    src:  url('fonts/icomoon.eot?lqk80d#iefix') format('embedded-opentype'),
-        url('fonts/icomoon.woff?35cb2z') format('woff'),
+    url('fonts/icomoon.ttf?lqk80d') format('truetype'),
-        url('fonts/icomoon.ttf?35cb2z') format('truetype'),
+    url('fonts/icomoon.woff?lqk80d') format('woff'),
-        url('fonts/icomoon.svg?35cb2z#icomoon') format('svg');
+    url('fonts/icomoon.svg?lqk80d#icomoon') format('svg');
    font-weight: normal;
    font-style: normal;
 }
-.font-ico,
+[class^="ico-"], [class*=" ico-"] {
-[class^="ico-"] {
+    /* use !important to prevent issues with browser extensions that change fonts */
-    font-family: 'icomoon';
+    font-family: 'icomoon' !important;
    speak: none;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    /* Better Font Rendering =========== */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
@ -160,177 +166,140 @@ button {
    line-height: 20px;
 }
-.ico-book:before {
+.ico-qqz:before {
-    content: "\e623";
+    content: "\e900";
 }
 .ico-price:before {
    content: "\e616";
 }
 .ico-start:before {
    content: "\e9d7";
 }
 .ico-share:before {
    content: "\e61f";
 }
 .ico-github:before {
    content: "\f00a";
 }
 .ico-git:before {
    content: "\e624";
 }
 .ico-tencent:before {
    content: "\e622";
 }
 .ico-weibo:before {
    content: "\e621";
 }
 .ico-googleplus:before {
    content: "\e61a";
 }
 .ico-twitter:before {
    content: "\e61c";
 }
 .ico-email:before {
    content: "\e619";
 }
 .ico-facebook:before {
    content: "\e61b";
 }
 .ico-moveup:before {
    content: "\f148";
 }
 .ico-movedown:before {
    content: "\f149";
 }
 .ico-keyboard:before {
    content: "\f11c";
 }
 .ico-findfiles:before {
    content: "\e603";
 }
 .ico-find:before {
    content: "\e602";
 }
-
+.ico-findfiles:before {
    content: "\e603";
 }
 .ico-editor:before {
    content: "\e604";
 }
 .ico-tree:before {
    content: "\e600";
 }
 .ico-build:before {
    content: "\e601";
 }
 .ico-notification:before {
    content: "\e607";
 }
-
+.ico-price:before {
    content: "\e616";
 }
 .ico-report:before {
    content: "\e605";
 }
-
+.ico-git:before {
-.ico-comment:before {
+    content: "\e624";
    content: "\e620";
 }
-
+.ico-book:before {
-.ico-goline:before {
+    content: "\e623";
    content: "\e61e";
 }
-
+.ico-start:before {
-.ico-info:before {
+    content: "\e9d7";
-    content: "\e61d";
+    text-shadow: 0 0 rgba(0, 0, 0, 0.4);
 }
-
+.ico-tree:before {
-.ico-signup:before {
+    content: "\e600";
    content: "\e606";
 }
-
+.ico-build:before {
-.ico-signout:before {
+    content: "\e601";
    content: "\e618";
 }
 .ico-redo:before {
    content: "\e615";
 }
 .ico-undo:before {
    content: "\e60e";
 }
 .ico-about:before {
    content: "\e60d";
 }
 .ico-import:before {
    content: "\f0ee";
 }
 .ico-export:before {
    content: "\f0ed";
 }
-
+.ico-import:before {
-.ico-refresh:before {
+    content: "\f0ee";
    content: "\f021";
 }
-
+.ico-keyboard:before {
-.ico-remove:before {
+    content: "\f11c";
    content: "\e60b";
 }
-
+.ico-moveup:before {
-.ico-save:before {
+    content: "\f148";
-    content: "\f0c7";
+}
 .ico-movedown:before {
    content: "\f149";
 }
 .ico-weibo:before {
    content: "\e621";
 }
 .ico-uniE608:before {
    content: "\e608";
 }
 .ico-max:before {
    content: "\e609";
 }
-
+.ico-remove:before {
-.ico-format:before {
+    content: "\e60b";
    content: "\e612";
 }
 .ico-buildrun:before {
    content: "\e60c";
 }
-
+.ico-about:before {
    content: "\e60d";
 }
 .ico-undo:before {
    content: "\e60e";
 }
 .ico-stop:before {
    content: "\e60f";
 }
-
+.ico-close:before {
    content: "\e611";
    text-shadow: 0 0 rgba(0, 0, 0, 0.4);
 }
 .ico-format:before {
    content: "\e612";
 }
 .ico-restore:before {
    content: "\e613";
 }
 .toolbars .ico-restore:before {
    content: "\e60a";
 }
 .ico-min:before {
    content: "\e614";
    position: absolute;
    right: 5px;
 }
-
+.ico-redo:before {
-.ico-close:before {
+    content: "\e615";
-    content: "\e611";
+}
 .ico-uniE617:before {
    content: "\e617";
 }
 .ico-signout:before {
    content: "\e618";
 }
 .ico-email:before {
    content: "\e619";
 }
 .ico-googleplus:before {
    content: "\e61a";
 }
 .ico-facebook:before {
    content: "\e61b";
 }
 .ico-twitter:before {
    content: "\e61c";
 }
 .ico-info:before {
    content: "\e61d";
 }
 .ico-goline:before {
    content: "\e61e";
 }
 .ico-share:before {
    content: "\e61f";
 }
 .ico-comment:before {
    content: "\e620";
 }
 .ico-github:before {
    content: "\f00a";
 }
 .ico-refresh:before {
    content: "\f021";
 }
 .ico-save:before {
    content: "\f0c7";
 }
 /* end ico */
--- a/static/css/dialog.css
+++ b/static/css/dialog.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -17,7 +17,7 @@
 /**
 * dialig style
 *
- * @author <a href="mailto:LLY219@gmail.com">Liyuan Li</a>
+ * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @version 0.0.0.6, Jun 3, 2012
 */
--- a/static/css/fonts/icomoon.eot
+++ b/static/css/fonts/icomoon.eot
--- a/static/css/fonts/icomoon.svg
+++ b/static/css/fonts/icomoon.svg
@ -6,52 +6,50 @@
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--- a/static/css/fonts/icomoon.ttf
+++ b/static/css/fonts/icomoon.ttf
--- a/static/css/fonts/icomoon.woff
+++ b/static/css/fonts/icomoon.woff
--- a/static/css/lib.min.css
+++ b/static/css/lib.min.css
--- a/static/css/playground.css
+++ b/static/css/playground.css
@ -1,12 +1,11 @@
@@ -1,100 +0,0 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -16,7 +15,15 @@
 */
 body {
-    overflow: auto;
+    display: flex;
    flex-direction: column;
    max-height: 100vh;
 }
 .main {
    flex: 1;
    min-height: 1px;
    display: flex;
 }
 .header {
@ -47,7 +54,7 @@ body{
 .share-panel {
    position: absolute;
    z-index: 20;
-    width: 226px;
+    width: 190px;
    padding: 5px 0px;
    right: 0px;
    line-height: normal;
@ -75,8 +82,12 @@ body{
    height: 70%;
 }
-#output {
+.bottom-window-group {
    height: 30%;
 }
 #output {
    height: 100%;
    width: 100%;
    border-width: 0;
    margin: 0;
@ -115,6 +126,10 @@ body{
    border-left: 1px solid #919191;
 }
 #goNews::-webkit-scrollbar {
    display: none;
 }
 #goNews li a {
    display: block;
    padding: 8px 10px;
@ -123,6 +138,12 @@ body{
    color: #666;
 }
 #goNews li a.fn-right {
    padding: 0;
    border: 0;
    color: #4285f4;
 }
 #goNews li a:hover {
    text-decoration: none;
    background-color: #f9f9f9;
--- a/static/css/shell.css
+++ b/static/css/shell.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
--- a/static/css/side.css
+++ b/static/css/side.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
--- a/static/css/sign.css
+++ b/static/css/sign.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -14,9 +14,17 @@
 * limitations under the License.
 */
 body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
 }
 .wrapper {
    margin: 0 auto;
    width: 980px;
    display: flex;
    align-items: center;
 }
 .header .logo {
@ -44,15 +52,20 @@
 }
 .header a:hover {
-    color: #4183C4;
+    color: #4285f4;
 }
 .fn-left {
    flex: 1;
 }
 .content {
    border-top: 1px solid #A4A4A4;
    border-bottom: 1px solid #919191;
-    background-color: #202021;
+    background-color: #3b3e43;
-    height: 632px;
+    flex: 1;
-    padding-top: 222px;
+    display: flex;
    align-items: center;
 }
 .content h2 {
@ -62,94 +75,104 @@
 }
 .content h3 {
-    color: #4183c4;
+    color: #4285f4;
    font-size: 21px;
 }
 .content .form {
    padding: 24px 15px;
    background-color: #fff;
    border-radius: 6px;
    width: 320px;
    margin-top: -18px;
    position: relative;
 }
-.content .form input {
+.content a {
-    border: 1px solid #ccc;
+    color: #4285f4;
    border-radius: 3px;
    width: 100%;
    background-color: #fafafa; 
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.075) inset;
    color: #333;
    min-height: 34px;
    outline: medium none;
    vertical-align: middle;
    font-size: 16px;
    border: 1px solid #FFF;
    padding: 10px;
    margin-top: 20px;
 }
-.content .form input:focus {
+
-    background-color: #FFF;
+.login__icon {
-    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.075) inset, 0 0 12px rgba(255, 255, 255, 0.75);
+    width: 200px;
    transition: all .15s ease-in-out;
    padding-right: 24px;
    color: #3b3e43;
    fill: currentColor;
 }
 .login__icon:hover {
    transform: scale(1.1);
 }
 .btn {
    width: 100%;
    color: #fff;
-    text-shadow: 0 -1px 0 rgba(0,0,0,0.25);
+    background-color: #2ebc4f;
    background-color: #60b044;
    background-image: linear-gradient(#8add6d, #60b044);
    border: 1px solid #5ca941;
    padding: 10px;
    border-radius: 3px;
    cursor: pointer;
    border: 0;
    display: block;
    text-align: center;
 }
 .btn:hover {
-    background-color: #569e3d;
+    text-decoration: none;
-    background-image: linear-gradient(#79d858, #569e3d);
+    background-color: #28a745;
-    border-color: #4a993e;
+}
 .btn:focus {
    box-shadow: 0 0 0 0.2em rgba(40, 167, 69, .3);
 }
 .btn-blue {
    background-color: #4285f4;
 }
 .btn-blue:hover {
    background-color: #2a75f3;
 }
 .btn.btn-white,
 .btn.btn-red {
    color: #333;
-    text-shadow: 0 1px 0 rgba(255,255,255,0.9);
+    background-color: #fff;
    background-color: #eee;
    background-image: linear-gradient(#fcfcfc, #eee);
    border-color: #d5d5d5;
 }
 .btn.btn-red {
-    color: #9d0000;
+    color: #d23f31;
 }
 .btn.btn-white:hover {
    color: #333;
    text-shadow: 0 1px 0 rgba(255,255,255,0.9);
    background-color: #ddd;
    background-image: linear-gradient(#eee, #ddd);
    border-color: #ccc;
 }
 .btn.btn-red:hover {
    background-color: #b33630;
    background-image: linear-gradient(#dc5f59, #b33630);
    background-repeat: repeat-x;
    border-color: #cd504a;
    color: #fff;
-    text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.3);
+    background-color: #d23f31;
 }
-#msg {
+.desc {
-    background-color: #fcdede;
+    color: #6a737d;
-    border: 1px solid #d2b2b2;
+    font-size: 12px;
-    padding: 15px;
+}
-    font-size: 14px;
+
-    color: #911;
+.more-detail {
-    position: absolute;
+    display: none;
-    width: 100%;
+    margin: 0 0 8px 60px;
-    top: -48px;
+}
 .checkbox {
    margin-top: 8px;
    display: block;
 }
 .view-more {
    cursor: pointer;
    display: block;
    text-align: center;
    color: #4285f4;
    margin-top: 8px;
 }
 .footer {
@ -162,7 +185,7 @@
 .footer a {
    text-decoration: none;
-    color: #4183c4;
+    color: #4285f4;
 }
 .footer a:hover {
@ -178,7 +201,7 @@
 /* start sign up */
 .dir {
-    color: #4183c4;
+    color: #4285f4;
    font-size: 18px;
    word-wrap: break-word;
    margin-top: 20px;
@ -198,4 +221,21 @@
    margin-top: 20px;
    font-size: 16px;
 }
 .start {
    text-align: center;
 }
 .start .btn {
    color: #fff;
 }
 .start svg {
    fill: currentColor;
 }
 .start__aciton {
    display: flex;
    align-items: center;
 }
 /* end sign up */
--- a/static/css/start.css
+++ b/static/css/start.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -39,7 +39,6 @@
    margin-bottom: 10px;
    padding: 5px 10px;
    color: #FFF;
    text-shadow: 0 1px rgba(0, 0, 0, 0.4);
 }
 #startPage .details {
--- a/static/css/themes/dark.css
+++ b/static/css/themes/dark.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
--- a/static/css/themes/default.css
+++ b/static/css/themes/default.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
--- a/static/css/wide.css
+++ b/static/css/wide.css
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -136,7 +136,7 @@
 .share-panel {
    position: absolute;
    z-index: 20;
-    width: 226px;
+    width: 190px;
    padding: 5px 0;
    right: 0px;
    top: 21px;
@ -259,22 +259,19 @@
 .bottom-window-group .output .start-build,
 .bottom-window-group .output .start-test, .start-vet,
-.bottom-window-group .output .start-install,
+.bottom-window-group .output .start-install {
 .bottom-window-group .output .start-get {
    color: #999;
 }
 .bottom-window-group .output .build-succ,
 .bottom-window-group .output .test-succ, .vet-succ,
-.bottom-window-group .output .install-succ,
+.bottom-window-group .output .install-succ {
 .bottom-window-group .output .get-succ {
    color: rgb(0,153,0);
 }
 .bottom-window-group .output .build-error,
 .bottom-window-group .output .test-error, .vet-error,
-.bottom-window-group .output .install-error, 
+.bottom-window-group .output .install-error {
 .bottom-window-group .output .get-error {
    color: #9d0000;
 }
--- a/static/css/wide.min.css
+++ b/static/css/wide.min.css
@ -1,6 +1,6 @@
-.dialog-close-icon,.dialog-close-icon:hover{text-decoration:none}.dialog-background{height:100%;left:0;opacity:.3;position:absolute;top:0;width:100%;filter:alpha(opacity=30);display:none;background-color:#000;z-index:99}.dialog-panel{position:absolute;z-index:100;display:none;-moz-user-select:none;user-select:none;box-shadow:0 2px 10px 1px #000}.dialog-title{float:left;line-height:22px;margin-left:3px;font-weight:700}.dialog-header-bg{height:23px;background-color:#bbb;cursor:move;width:100%}.dialog-close-icon{float:right;margin:3px}.dialog-main>div{width:100%}.dialog-footer{padding:10px;text-align:right}#dialogCloseEditor button,.dialog-footer button{margin:0 5px}#dialogAlert,#dialogRemoveConfirm,.dialog-form,.dialog-prompt{padding:10px 15px 0;overflow:hidden}.dialog-main input,.dialog-main select{width:100%;margin:2px auto}#dialogGoFilePrompt>ul{position:relative;height:260px;overflow:auto;margin-top:5px;background-color:#FFF;border:1px solid #919191}#dialogPreference{margin:10px}#dialogPreference .tabs-panel{padding:10px}#dialogPreference .preference{margin-bottom:10px}#dialogPreference img.gravatar{width:48px;height:48px}
+.dialog-background{height:100%;left:0;opacity:.3;position:absolute;top:0;width:100%;display:none;background-color:#000;z-index:99}.dialog-panel{position:absolute;z-index:100;display:none;-moz-user-select:none;user-select:none;box-shadow:0 2px 10px 1px #000}.dialog-title{float:left;line-height:22px;margin-left:3px;font-weight:700}.dialog-header-bg{height:23px;background-color:#bbb;cursor:move;width:100%}.dialog-close-icon{float:right;margin:3px;text-decoration:none}.dialog-close-icon:hover{text-decoration:none}.dialog-main>div{width:100%}.dialog-footer{padding:10px;text-align:right}#dialogCloseEditor button,.dialog-footer button{margin:0 5px}#dialogAlert,#dialogRemoveConfirm,.dialog-form,.dialog-prompt{padding:10px 15px 0;overflow:hidden}.dialog-main input,.dialog-main select{width:100%;margin:2px auto}#dialogGoFilePrompt>ul{position:relative;height:260px;overflow:auto;margin-top:5px;background-color:#fff;border:1px solid #919191}#dialogPreference{margin:10px}#dialogPreference .tabs-panel{padding:10px}#dialogPreference .preference{margin-bottom:10px}#dialogPreference img.gravatar{width:48px;height:48px}
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+::-webkit-scrollbar{background:0 0;width:16px;height:16px}::-webkit-scrollbar-corner{display:none;background-color:transparent}::-webkit-scrollbar-thumb{border:solid 0 transparent;border-right-width:4px;border-left-width:4px;border-radius:9px;box-shadow:inset 0 0 0 1px rgba(128,128,128,.2),inset 0 0 0 4px rgba(128,128,128,.2)}::-webkit-scrollbar-thumb:horizontal{border-bottom-width:4px;border-top-width:4px}body{font-size:13px;margin:0;color:#000;overflow:hidden;font-family:Helvetica}ul{padding:0;margin:0;list-style:none}*{box-sizing:border-box}a{color:#4183c4;text-decoration:none}a:hover{text-decoration:underline}img{vertical-align:middle}button,input{font-family:Helvetica}.fn-left{float:left}.fn-right{float:right}.fn-clear:after,.fn-clear:before{display:table;content:""}.fn-clear:after{clear:both}.fn-none{display:none}.ft-small{color:#999;font-size:12px}.ft-red{color:#9d0000}.list li{cursor:pointer;line-height:20px;padding:0 3px;word-wrap:normal;word-break:normal;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.list li.selected,.list li:hover{background-color:#3875d7;color:#fff}.list li.selected .ft-small,.list li:hover .ft-small{color:#fff}@font-face{font-family:icomoon;src:url(fonts/icomoon.eot?lqk80d);src:url(fonts/icomoon.eot?lqk80d#iefix) format('embedded-opentype'),url(fonts/icomoon.ttf?lqk80d) format('truetype'),url(fonts/icomoon.woff?lqk80d) format('woff'),url(fonts/icomoon.svg?lqk80d#icomoon) format('svg');font-weight:400;font-style:normal}[class*=" ico-"],[class^=ico-]{font-family:icomoon!important;speak:none;font-style:normal;font-weight:400;font-variant:normal;text-transform:none;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;cursor:pointer;font-size:13px;line-height:20px}.ico-qqz:before{content:"\e900"}.ico-find:before{content:"\e602"}.ico-findfiles:before{content:"\e603"}.ico-editor:before{content:"\e604"}.ico-notification:before{content:"\e607"}.ico-price:before{content:"\e616"}.ico-report:before{content:"\e605"}.ico-git:before{content:"\e624"}.ico-book:before{content:"\e623"}.ico-start:before{content:"\e9d7";text-shadow:0 0 rgba(0,0,0,.4)}.ico-tree:before{content:"\e600"}.ico-build:before{content:"\e601"}.ico-export:before{content:"\f0ed"}.ico-import:before{content:"\f0ee"}.ico-keyboard:before{content:"\f11c"}.ico-moveup:before{content:"\f148"}.ico-movedown:before{content:"\f149"}.ico-weibo:before{content:"\e621"}.ico-uniE608:before{content:"\e608"}.ico-max:before{content:"\e609"}.ico-remove:before{content:"\e60b"}.ico-buildrun:before{content:"\e60c"}.ico-about:before{content:"\e60d"}.ico-undo:before{content:"\e60e"}.ico-stop:before{content:"\e60f"}.ico-close:before{content:"\e611";text-shadow:0 0 rgba(0,0,0,.4)}.ico-format:before{content:"\e612"}.ico-restore:before{content:"\e613"}.toolbars .ico-restore:before{content:"\e60a"}.ico-min:before{content:"\e614";position:absolute;right:5px}.ico-redo:before{content:"\e615"}.ico-uniE617:before{content:"\e617"}.ico-signout:before{content:"\e618"}.ico-email:before{content:"\e619"}.ico-googleplus:before{content:"\e61a"}.ico-facebook:before{content:"\e61b"}.ico-twitter:before{content:"\e61c"}.ico-info:before{content:"\e61d"}.ico-goline:before{content:"\e61e"}.ico-share:before{content:"\e61f"}.ico-comment:before{content:"\e620"}.ico-github:before{content:"\f00a"}.ico-refresh:before{content:"\f021"}.ico-save:before{content:"\f0c7"}
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+.frame{position:absolute;width:320px;z-index:21;display:none}.frame li{padding:0 5px;line-height:25px;cursor:pointer}.frame li.disabled,.frame li.disabled .font-ico,.frame li.disabled:hover .font-ico{color:#999}.frame a{color:#000;text-decoration:none}.frame a:hover,.frame li:hover a{color:#fff}.frame .space{display:inline-block;width:20px;height:15px}.frame .font-ico{margin-right:5px;width:15px;display:inline-block;text-align:center}.tabs{height:21px;overflow:hidden;width:100%}.tabs>div{float:left;line-height:20px;height:20px;padding:0 5px;cursor:pointer}.tabs>div>span.changed{font-weight:700}.tabs-panel{overflow:auto;flex:1;height:100%}.menu{display:block!important}.menu>ul>li{float:left}.menu>ul>li>span{font-size:12px;line-height:21px;cursor:pointer;padding:4px 7px}.menu .split{float:left;border-left:1px solid #919191;height:21px;margin:0 5px 0 0}.menu img.gravatar{float:left;margin:2px 8px;height:17px;width:17px;border-radius:9px}#buildRun{color:#6db14c;font-size:19px}#buildRun.ico-stop{color:#9d0000;font-size:16px}.share-panel{position:absolute;z-index:20;width:190px;padding:5px 0;right:0;top:21px}.share-panel .font-ico{font-size:20px;transition:all .2s ease-out 0s;margin:0 5px;width:24px}.share-panel .font-ico:hover{transform:rotate(360deg)}.edit-panel{position:absolute;left:20%;width:60%;height:70%;overflow:hidden;flex-flow:column;display:flex}.toolbars{position:absolute;right:5px;top:1px}.ico{background-image:url(../images/ico-file.png);float:left;height:16px;margin:2px 0 0 -2px;width:16px}.edit-exprinfo{position:absolute;z-index:10;overflow:hidden;list-style:none;margin:0;padding:2px;-webkit-box-shadow:2px 3px 5px rgba(0,0,0,.2);-moz-box-shadow:2px 3px 5px rgba(0,0,0,.2);box-shadow:2px 3px 5px rgba(0,0,0,.2);border-radius:3px;border:1px solid silver;background:#fff;font-size:90%;max-height:20em;overflow-y:auto}.CodeMirror,.CodeMirror-hints{font-family:Consolas,'Courier New',monospace}.CodeMirror-hints .ico{margin:-1px 2px 0 -1px}.CodeMirror-focused .cm-matchhighlight{background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAYAAABytg0kAAAAFklEQVQI12NgYGBgkKzc8x9CMDAwAAAmhwSbidEoSQAAAABJRU5ErkJggg==);background-position:bottom;background-repeat:repeat-x}.CodeMirror-hint{padding-right:18px;max-width:none}.CodeMirror-hint:hover{background:#08f;color:#fff}.CodeMirror div.CodeMirror-cursor{border-left:2px solid #333}.CodeMirror-gutter-filler,.CodeMirror-scrollbar-filler{background-color:transparent}.bottom-window-group{background-color:#fff;flex-flow:column}.bottom-window-group .output{font-family:Consolas,Courier New,monospace;padding:0 5px;line-height:16px;font-size:12px;overflow-x:scroll;outline:0}.bottom-window-group .output pre{margin:0;font-family:Consolas,'Courier New',monospace}.bottom-window-group .output .start-build,.bottom-window-group .output .start-install,.bottom-window-group .output .start-test,.start-vet{color:#999}.bottom-window-group .output .build-succ,.bottom-window-group .output .install-succ,.bottom-window-group .output .test-succ,.vet-succ{color:#090}.bottom-window-group .output .build-error,.bottom-window-group .output .install-error,.bottom-window-group .output .test-error,.vet-error{color:#9d0000}.bottom-window-group .output .stderr{color:gray;font-style:italic}.bottom-window-group .output .path{text-decoration:underline;cursor:pointer}.bottom-window-group table{width:100%}.bottom-window-group td{border-bottom:1px solid #919191;font-size:12px;line-height:19px}.bottom-window-group .notification{outline:0}.bottom-window-group .notification .severity,.bottom-window-group .notification .type{width:50px;padding:0 5px}.bottom-window-group .search{display:flex;flex-flow:column;outline:0}.footer{box-shadow:0 1px 0 0 rgba(255,255,255,.06) inset;padding-left:5px;line-height:18px;display:block!important}.footer .cursor{cursor:pointer}.notification-count{float:right;display:none;cursor:pointer;background-color:#9d0000;color:#fff;margin:1px 5px;padding:0 2px;border-radius:3px;line-height:16px}
-.side{width:20%;position:absolute;height:100%;z-index:8;flex-flow:column;display:flex}.side-max{width:100%;z-index:11}.side-right .tabs-panel>div{overflow:auto}.side-right{flex-flow:column}#outline .ico{margin:1px 5px 0}.ico-func{background-position:-123px -21px}.ico-interface{background-position:-143px -21px}.ico-const{background-position:-103px -21px}.ico-var{background-position:-63px -21px}.ico-struct{background-position:-83px -21px}.ico-type{background-position:-163px -21px}.ico-package{background-position:-183px -21px}.ztree{width:100%;padding:0;outline:0;border:0}.ztree li a.curSelectedNode{background-color:#3875d7;border-width:0;color:#fff;height:18px;opacity:1}.ztree li a:hover{text-decoration:none}.ztree li>a>span.button,.ztree li>a>span.button.ico-ztree-dir,.ztree li>a>span.button.ico-ztree-dir-api,.ztree li>a>span.button.ico-ztree-dir-workspace{margin-right:2px}.ztree li>a>span.button{background-image:url(../images/ico-file.png);margin-right:0}.ico-ztree-dir{background-position:-2px -23px}.ico-ztree-dir-api{background-position:-22px -23px}.ico-ztree-dir-workspace{background-position:-42px -23px}.ico-ztree-html{background-position:-4px -2px}.ico-ztree-go{background-position:-22px -2px}.ico-ztree-css{background-position:-42px -2px}.ico-ztree-img{background-position:-63px -2px}.ico-ztree-other{background-position:-83px -2px}.ico-ztree-text{background-position:-103px -2px}.ico-ztree-sql{background-position:-123px -2px}.ico-ztree-pro{background-position:-142px -2px}.ico-ztree-md{background-position:-162px -2px}.ico-ztree-js{background-position:-182px -2px}.ico-ztree-xml{background-position:-202px -2px}
+.side{width:20%;position:absolute;height:100%;z-index:8;flex-flow:column;display:flex}.side-max{width:100%;z-index:11}.side-right .tabs-panel>div{overflow:auto}.side-right{flex-flow:column}#outline .ico{margin:1px 5px 0 5px}.ico-func{background-position:-123px -21px}.ico-interface{background-position:-143px -21px}.ico-const{background-position:-103px -21px}.ico-var{background-position:-63px -21px}.ico-struct{background-position:-83px -21px}.ico-type{background-position:-163px -21px}.ico-package{background-position:-183px -21px}.ztree{width:100%;padding:0;outline:0;border:0}.ztree li a.curSelectedNode{background-color:#3875d7;border-width:0;color:#fff;height:18px;opacity:1}.ztree li a:hover{text-decoration:none}.ztree li>a>span.button,.ztree li>a>span.button.ico-ztree-dir,.ztree li>a>span.button.ico-ztree-dir-api,.ztree li>a>span.button.ico-ztree-dir-workspace{margin-right:2px}.ztree li>a>span.button{background-image:url(../images/ico-file.png);margin-right:0}.ico-ztree-dir{background-position:-2px -23px}.ico-ztree-dir-api{background-position:-22px -23px}.ico-ztree-dir-workspace{background-position:-42px -23px}.ico-ztree-html{background-position:-4px -2px}.ico-ztree-go{background-position:-22px -2px}.ico-ztree-css{background-position:-42px -2px}.ico-ztree-img{background-position:-63px -2px}.ico-ztree-other{background-position:-83px -2px}.ico-ztree-text{background-position:-103px -2px}.ico-ztree-sql{background-position:-123px -2px}.ico-ztree-pro{background-position:-142px -2px}.ico-ztree-md{background-position:-162px -2px}.ico-ztree-js{background-position:-182px -2px}.ico-ztree-xml{background-position:-202px -2px}
-#startPage{padding:50px 70px;line-height:28px;white-space:normal;word-wrap:break-word;overflow:auto}#startPage a{color:#4183c4;text-decoration:none}#startPage a:hover{text-decoration:underline}#startPage .title{background-color:#BBB;border-bottom-width:0!important;border-radius:3px 3px 0 0;font-size:15px;margin-bottom:10px;padding:5px 10px;color:#FFF;text-shadow:0 1px rgba(0,0,0,.4)}#startPage .details li.border,#startPage .news li{border-bottom:1px solid #919191}#startPage .details{width:30%;float:left}#startPage .details label{color:#666}#startPage .details li.border{padding-bottom:5px;margin-bottom:5px}#startPage .details li.border.workspace{line-height:18px;padding-bottom:10px!important;word-wrap:break-word;white-space:normal;word-break:break-all}#startPage .news{width:60%;float:right;border-left:1px solid #f1f1f1;margin-left:10%;padding-left:10%;white-space:nowrap;overflow:hidden}#startPage .date{color:#bbb;font-size:13px;word-wrap:normal;white-space:nowrap}
+#startPage{padding:50px 70px;line-height:28px;white-space:normal;word-wrap:break-word;overflow:auto}#startPage a{color:#4183c4;text-decoration:none}#startPage a:hover{text-decoration:underline}#startPage .title{background-color:#bbb;border-bottom-width:0!important;border-radius:3px 3px 0 0;font-size:15px;margin-bottom:10px;padding:5px 10px;color:#fff}#startPage .details{width:30%;float:left}#startPage .details label{color:#666}#startPage .details li.border{padding-bottom:5px;margin-bottom:5px;border-bottom:1px solid #919191}#startPage .details li.border.workspace{line-height:18px;padding-bottom:10px!important;word-wrap:break-word;white-space:normal;word-break:break-all}#startPage .news{width:60%;float:right;border-left:1px solid #f1f1f1;margin-left:10%;padding-left:10%;white-space:nowrap;overflow:hidden}#startPage .news li{border-bottom:1px solid #919191}#startPage .date{color:#bbb;font-size:13px;word-wrap:normal;white-space:nowrap}
-#dialogAboutDialog .dialog-main{background-color:#FFF}#dialogAbout{margin:35px 20px;line-height:28px}#dialogAbout .item{margin:0 10px}#dialogAbout a{color:#4183c4;text-decoration:none}#dialogAbout a:hover{text-decoration:underline}#dialogAbout label{color:#666}#dialogAbout img{width:100px;float:left;margin-right:60px}#dialogAbout .space{margin-bottom:6px;border-bottom:1px solid #919191;padding-bottom:6px}#dialogAbout .thx ul{margin-left:50px}#dialogAbout .thx a{width:80px;display:inline-block}#dialogAbout .license{color:#999;font-size:12px;line-height:normal;height:85px;overflow-x:hidden;word-wrap:break-word}
+#dialogAboutDialog .dialog-main{background-color:#fff}#dialogAbout{margin:35px 20px;line-height:28px}#dialogAbout .item{margin:0 10px}#dialogAbout a{color:#4183c4;text-decoration:none}#dialogAbout a:hover{text-decoration:underline}#dialogAbout label{color:#666}#dialogAbout img{width:100px;float:left;margin-right:60px}#dialogAbout .space{margin-bottom:6px;border-bottom:1px solid #919191;padding-bottom:6px}#dialogAbout .thx ul{margin-left:50px}#dialogAbout .thx a{width:80px;display:inline-block}#dialogAbout .license{color:#999;font-size:12px;line-height:normal;height:85px;overflow-x:hidden;word-wrap:break-word}
--- a/static/images/favicon.png
+++ b/static/images/favicon.png
--- a/static/images/hacpai.png
+++ b/static/images/hacpai.png
--- a/static/images/wide-logo.png
+++ b/static/images/wide-logo.png
--- a/static/js/bottomGroup.js
+++ b/static/js/bottomGroup.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -19,7 +19,7 @@
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.1.0.1, Dec 8, 2015
+ * @version 1.1.1.1, Mar 15, 2017
 */
 var bottomGroup = {
    tabs: undefined,
@ -82,6 +82,7 @@ var bottomGroup = {
    fillOutput: function (data) {
        var $output = $('.bottom-window-group .output');
        data = data.replace(/\r/g, '');
        data = data.replace(/\n/g, '<br/>');
        if (-1 !== data.indexOf("<br/>")) {
--- a/static/js/dialog.js
+++ b/static/js/dialog.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -24,7 +24,7 @@
    $.fn.extend({
        dialog: {
            version: "0.0.1.7",
-            author: "lly219@gmail.com"
+            author: "v@b3log.org"
        }
    });
--- a/static/js/editors.js
+++ b/static/js/editors.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -178,7 +178,7 @@ var editors = {
                }
                if (editors.data.length === 0) { // 起始页可能存在，所以用编辑器数据判断
-                    menu.disabled(['save-all', 'build', 'run', 'go-test', 'go-vet', 'go-get', 'go-install',
+                    menu.disabled(['save-all', 'build', 'run', 'go-test', 'go-vet', 'go-mod', 'go-install',
                        'find', 'find-next', 'find-previous', 'replace', 'replace-all',
                        'format', 'autocomplete', 'jump-to-decl', 'expr-info', 'find-usages', 'toggle-comment',
                        'edit']);
@ -246,9 +246,9 @@ var editors = {
                    + '"><span class="ico-start font-ico"></span> ' + config.label.start_page + '</span>',
            content: '<div id="startPage"></div>',
            after: function () {
-                $("#startPage").load(config.context + '/start?sid=' + config.wideSessionId);
+                $("#startPage").load('/start?sid=' + config.wideSessionId);
                $.ajax({
-                    url: "https://hacpai.com/apis/articles?tags=wide,golang&p=1&size=20",
+                    url: "https://ld246.com/apis/articles?tags=wide,golang&p=1&size=20",
                    type: "GET",
                    dataType: "jsonp",
                    jsonp: "callback",
@ -264,7 +264,8 @@ var editors = {
                            length = 9;
                        }
-                        var listHTML = "<ul><li class='title'>" + config.label.community + "</li>";
+                        var listHTML = "<ul><li class='title'>" + config.label.community +
                            "<a href='https://ld246.com/article/1437497122181' target='_blank' class='fn-right'>边看边练</li>";
                        for (var i = 0; i < length; i++) {
                            var article = articles[i];
                            listHTML += "<li>"
@ -328,7 +329,7 @@ var editors = {
            $.ajax({
                async: false, // 同步执行
                type: 'POST',
-                url: config.context + '/autocomplete',
+                url: '/autocomplete',
                data: JSON.stringify(request),
                dataType: "json",
                success: function (data) {
@ -434,11 +435,11 @@ var editors = {
            $.ajax({
                type: 'POST',
-                url: config.context + '/exprinfo',
+                url: '/exprinfo',
                data: JSON.stringify(request),
                dataType: "json",
                success: function (result) {
-                    if (!result.succ) {
+                    if (0 != result.code) {
                        return;
                    }
@ -582,11 +583,11 @@ var editors = {
            $.ajax({
                type: 'POST',
-                url: config.context + '/find/decl',
+                url: '/find/decl',
                data: JSON.stringify(request),
                dataType: "json",
                success: function (result) {
-                    if (!result.succ) {
+                    if (0 != result.code) {
                        return;
                    }
@ -612,11 +613,11 @@ var editors = {
            $.ajax({
                type: 'POST',
-                url: config.context + '/find/usages',
+                url: '/find/usages',
                data: JSON.stringify(request),
                dataType: "json",
                success: function (result) {
-                    if (!result.succ) {
+                    if (0 != result.code) {
                        return;
                    }
@ -731,7 +732,7 @@ var editors = {
            content: '<textarea id="editor' + id + '"></textarea>'
        });
-        menu.undisabled(['save-all', 'close-all', 'build', 'run', 'go-test', 'go-vet', 'go-get', 'go-install',
+        menu.undisabled(['save-all', 'close-all', 'build', 'run', 'go-test', 'go-vet', 'go-mod', 'go-install',
            'find', 'find-next', 'find-previous', 'replace', 'replace-all',
            'format', 'autocomplete', 'jump-to-decl', 'expr-info', 'find-usages', 'toggle-comment',
            'edit']);
--- a/static/js/hotkeys.js
+++ b/static/js/hotkeys.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
--- a/static/js/lib.min.js
+++ b/static/js/lib.min.js
--- a/static/js/lib/codemirror-5.1/mode/xquery/index.html
+++ b/static/js/lib/codemirror-5.1/mode/xquery/index.html
@ -73,7 +73,7 @@ xquery version &quot;1.0-ml&quot;;
 : 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
+ :     https://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 &quot;AS IS&quot; BASIS,
--- a/static/js/lib/ztree/zTreeStyle.min.css
+++ b/static/js/lib/ztree/zTreeStyle.min.css
--- a/static/js/menu.js
+++ b/static/js/menu.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -19,7 +19,7 @@
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.0.0.1, Dec 8, 2015
+ * @version 1.0.1.3, Oct 5, 2018
 */
 var menu = {
    init: function () {
@ -55,14 +55,13 @@ var menu = {
            var title = encodeURIComponent($('title').text() + '. \n' + $('meta[name=description]').attr('content')
                    + " #golang#");
            urls.weibo = "http://v.t.sina.com.cn/share/share.php?title=" + title + "&url=" + url + "&pic=" + pic;
-            urls.tencent = "http://share.v.t.qq.com/index.php?c=share&a=index&title=" + title +
+            urls.qqz = "https://sns.qzone.qq.com/cgi-bin/qzshare/cgi_qzshare_onekey?url=" + url + "&sharesource=qzone&title=" + title+ "&pics=" + pic;
                    "&url=" + url + "&pic=" + pic;
            window.open(urls[key], "_blank", "top=100,left=200,width=648,height=618");
        });
    },
    _initAbout: function () {
-        $("#dialogAbout").load(config.context + '/about', function () {
+        $("#dialogAbout").load('/about', function () {
            $("#dialogAbout").dialog({
                "modal": true,
                "title": config.label.about,
@ -160,12 +159,12 @@ var menu = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/logout',
+            url: '/logout',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
-                if (result.succ) {
+                if (0 == result.code) {
-                    window.location.href = config.context + "/login";
+                    window.location.href = "/login";
                }
            }
        });
@ -173,33 +172,6 @@ var menu = {
    openAbout: function () {
        $("#dialogAbout").dialog("open");
    },
    goget: function () {
        menu.saveAllFiles();
        var currentPath = editors.getCurrentPath();
        if (!currentPath) {
            return false;
        }
        if ($(".menu li.go-get").hasClass("disabled")) {
            return false;
        }
        var request = newWideRequest();
        request.file = currentPath;
        $.ajax({
            type: 'POST',
            url: config.context + '/go/get',
            data: JSON.stringify(request),
            dataType: "json",
            beforeSend: function () {
                bottomGroup.resetOutput();
            },
            success: function (result) {
            }
        });
    },
    goinstall: function () {
        menu.saveAllFiles();
@ -217,7 +189,7 @@ var menu = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/go/install',
+            url: '/go/install',
            data: JSON.stringify(request),
            dataType: "json",
            beforeSend: function () {
@ -245,7 +217,7 @@ var menu = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/go/test',
+            url: '/go/test',
            data: JSON.stringify(request),
            dataType: "json",
            beforeSend: function () {
@ -273,7 +245,7 @@ var menu = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/go/vet',
+            url: '/go/vet',
            data: JSON.stringify(request),
            dataType: "json",
            beforeSend: function () {
@ -308,15 +280,16 @@ var menu = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/build',
+            url: '/build',
            data: JSON.stringify(request),
            dataType: "json",
            beforeSend: function () {
                bottomGroup.resetOutput();
-            },
+
            success: function (result) {
                $("#buildRun").addClass("ico-stop")
                        .removeClass("ico-buildrun").attr("title", config.label.stop);
            },
            success: function (result) {
            }
        });
    },
@ -340,7 +313,7 @@ var menu = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/build',
+            url: '/build',
            data: JSON.stringify(request),
            dataType: "json",
            beforeSend: function () {
@ -351,7 +324,7 @@ var menu = {
        });
    },
    _initPreference: function () {
-        $("#dialogPreference").load(config.context + '/preference', function () {
+        $("#dialogPreference").load('/preference', function () {
            $("#dialogPreference input").keyup(function () {
                var isChange = false,
                        emptys = [],
@ -424,6 +397,9 @@ var menu = {
                            $fontFamily = $dialogPreference.find("input[name=fontFamily]"),
                            $fontSize = $dialogPreference.find("input[name=fontSize]"),
                            $goFmt = $dialogPreference.find("select[name=goFmt]"),
                            $GoBuildArgsForLinux = $dialogPreference.find("input[name=GoBuildArgsForLinux]"),
                            $GoBuildArgsForWindows = $dialogPreference.find("input[name=GoBuildArgsForWindows]"),
                            $GoBuildArgsForDarwin = $dialogPreference.find("input[name=GoBuildArgsForDarwin]"),
                            $workspace = $dialogPreference.find("input[name=workspace]"),
                            $password = $dialogPreference.find("input[name=password]"),
                            $email = $dialogPreference.find("input[name=email]"),
@ -440,9 +416,11 @@ var menu = {
                        "fontFamily": $fontFamily.val(),
                        "fontSize": $fontSize.val(),
                        "goFmt": $goFmt.val(),
                        "GoBuildArgsForLinux": $GoBuildArgsForLinux.val(),
                        "GoBuildArgsForWindows": $GoBuildArgsForWindows.val(),
                        "GoBuildArgsForDarwin": $GoBuildArgsForDarwin.val(),
                        "workspace": $workspace.val(),
                        "password": $password.val(),
                        "email": $email.val(),
                        "locale": $locale.val(),
                        "theme": $theme.val(),
                        "editorFontFamily": $editorFontFamily.val(),
@ -459,16 +437,19 @@ var menu = {
                    $.ajax({
                        type: 'POST',
-                        url: config.context + '/preference',
+                        url: '/preference',
                        data: JSON.stringify(request),
                        success: function (result, textStatus, jqXHR) {
-                            if (!result.succ) {
+                            if (0 != result.code) {
                                return false;
                            }
                            $fontFamily.data("value", $fontFamily.val());
                            $fontSize.data("value", $fontSize.val());
                            $goFmt.data("value", $goFmt.val());
                            $GoBuildArgsForLinux.data("value", $GoBuildArgsForLinux.val());
                            $GoBuildArgsForWindows.data("value", $GoBuildArgsForWindows.val());
                            $GoBuildArgsForDarwin.data("value", $GoBuildArgsForDarwin.val());
                            $workspace.data("value", $workspace.val());
                            $password.data("value", $password.val());
                            $email.data("value", $email.val());
@ -487,7 +468,7 @@ var menu = {
                            var $okBtn = $("#dialogPreference").closest(".dialog-main").find(".dialog-footer > button:eq(0)");
                            $okBtn.prop("disabled", true);
-                            $("#themesLink").attr("href", config.staticServer + '/static/css/themes/' + $theme.val() + '.css');
+                            $("#themesLink").attr("href", '/static/css/themes/' + $theme.val() + '.css');
                            config.editorTheme = $editorTheme.val();
                            for (var i = 0, ii = editors.data.length; i < ii; i++) {
--- a/static/js/notification.js
+++ b/static/js/notification.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -19,7 +19,7 @@
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.0.0.1, Dec 8, 2015
+ * @version 1.0.0.2, Jun 23, 2019
 */
 var notification = {
    init: function () {
@ -35,7 +35,7 @@ var notification = {
        var notificationWS = new ReconnectingWebSocket(config.channel + '/notification/ws?sid=' + config.wideSessionId);
        notificationWS.onopen = function () {
-            console.log('[notification onopen] connected');
+            // console.log('[notification onopen] connected');
        };
        notificationWS.onmessage = function (e) {
@ -44,7 +44,7 @@ var notification = {
                    notificationHTML = '';
            if (data.cmd && "init-notification" === data.cmd) {
-                console.log('[notification onmessage]' + e.data);
+                // console.log('[notification onmessage]' + e.data);
                return;
            }
@ -58,11 +58,11 @@ var notification = {
        };
        notificationWS.onclose = function (e) {
-            console.log('[notification onclose] disconnected (' + e.code + ')');
+            // console.log('[notification onclose] disconnected (' + e.code + ')');
        };
        notificationWS.onerror = function (e) {
-            console.log('[notification onerror]');
+            console.log('[notification onerror]', e);
        };
    }
 };
--- a/static/js/overwrite/codemirror/addon/hint/show-hint.js
+++ b/static/js/overwrite/codemirror/addon/hint/show-hint.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
--- a/static/js/overwrite/codemirror/theme/wide.css
+++ b/static/js/overwrite/codemirror/theme/wide.css
@ -5,7 +5,7 @@
 * 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
+ *     https://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,
--- a/static/js/playground.js
+++ b/static/js/playground.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -19,14 +19,13 @@
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.0.0.1, Dec 8, 2015
+ * @version 1.0.0.3, Jun 23, 2019
 */
 var playground = {
    autocompleteMutex: false,
    editor: undefined,
    pid: undefined,
    _resize: function () {
        $('#goNews, #editorDivWrap').height($(window).height() - 40 - $(".footer").height());
        playground.editor.setSize("auto", ($("#editorDiv").parent().height() * 0.7) + "px");
    },
    _initShare: function () {
@ -53,8 +52,7 @@ var playground = {
            var title = encodeURIComponent($('title').text() + '. \n' + $('meta[name=description]').attr('content')
                    + " #golang#");
            urls.weibo = "http://v.t.sina.com.cn/share/share.php?title=" + title + "&url=" + url + "&pic=" + pic;
-            urls.tencent = "http://share.v.t.qq.com/index.php?c=share&a=index&title=" + title +
+            urls.qqz = "https://sns.qzone.qq.com/cgi-bin/qzshare/cgi_qzshare_onekey?url=" + url + "&sharesource=qzone&title=" + title+ "&pics=" + pic;
                    "&url=" + url + "&pic=" + pic;
          window.open(urls[key], "_blank", "top=100,left=200,width=648,height=618");
@ -83,7 +81,6 @@ var playground = {
            var autocompleteHints = [];
            if (playground.autocompleteMutex && editor.state.completionActive) {
                console.log(1);
                return;
            }
@ -92,7 +89,7 @@ var playground = {
            $.ajax({
                async: false, // 同步执行
                type: 'POST',
-                url: config.context + '/playground/autocomplete',
+                url: '/playground/autocomplete',
                data: JSON.stringify(request),
                dataType: "json",
                success: function (data) {
@ -276,28 +273,26 @@ var playground = {
        var sessionWS = new ReconnectingWebSocket(config.channel + '/session/ws?sid=' + config.wideSessionId);
        sessionWS.onopen = function () {
-            console.log('[session onopen] connected');
+            // console.log('[session onopen] connected');
        };
        sessionWS.onmessage = function (e) {
-            console.log('[session onmessage]' + e.data);
+            // console.log('[session onmessage]' + e.data);
        };
        sessionWS.onclose = function (e) {
-            console.log('[session onclose] disconnected (' + e.code + ')');
+            // console.log('[session onclose] disconnected (' + e.code + ')');
        };
        sessionWS.onerror = function (e) {
-            console.log('[session onerror] ' + JSON.parse(e));
+            // console.log('[session onerror] ' + JSON.parse(e));
        };
        var playgroundWS = new ReconnectingWebSocket(config.channel + '/playground/ws?sid=' + config.wideSessionId);
        playgroundWS.onopen = function () {
-            console.log('[playground onopen] connected');
+            // console.log('[playground onopen] connected');
        };
        playgroundWS.onmessage = function (e) {
            console.log('[playground onmessage]' + e.data);
            var data = JSON.parse(e.data);
            if ("init-playground" === data.cmd) {
@ -306,19 +301,30 @@ var playground = {
            playground.pid = data.pid;
-            var val = $("#output").val();
+            var output = $("#output").html();
-            $("#output").val(val + data.output);
+            if ("" === output) {
                output = "<pre>" + data.output + "</pre>";
            } else {
                output = output.replace(/<\/pre>$/g, data.output + '</pre>');
            }
            output = output.replace(/\r/g, '');
            output = output.replace(/\n/g, '<br/>');
            if (-1 !== output.indexOf("<br/>")) {
                output = Autolinker.link(output);
            }
            $("#output").html(output);
        };
        playgroundWS.onclose = function (e) {
-            console.log('[playground onclose] disconnected (' + e.code + ')');
+            // console.log('[playground onclose] disconnected (' + e.code + ')');
        };
        playgroundWS.onerror = function (e) {
-            console.log('[playground onerror] ' + JSON.parse(e));
+            console.log('[playground onerror] ', e);
        };
    },
    _initGoNews: function () {
        $.ajax({
-            url: "https://hacpai.com/apis/articles?tags=wide,golang&p=1&size=20",
+            url: "https://ld246.com/apis/articles?tags=wide,golang&p=1&size=20",
            type: "GET",
            dataType: "jsonp",
            jsonp: "callback",
@ -330,7 +336,8 @@ var playground = {
                var length = articles.length;
-                var listHTML = "<ul><li class='title'>" + config.label.community + "</li>";
+                var listHTML = "<ul><li class='title'>" + config.label.community +
                    "<a href='https://ld246.com/article/1437497122181' target='_blank' class='fn-right'>边看边练</li>";
                for (var i = 0; i < length; i++) {
                    var article = articles[i];
                    listHTML += "<li>"
@ -356,7 +363,7 @@ var playground = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/playground/save',
+            url: '/playground/save',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
@ -364,8 +371,7 @@ var playground = {
                playground.editor.setValue(data.code);
-                if (!result.succ) {
+                if (0 != result.code) {
                    console.log(data);
                    return;
                }
@ -373,23 +379,9 @@ var playground = {
                var request = newWideRequest();
                request.url = url;
                $.ajax({
                    type: 'POST',
                    url: config.context + '/playground/short-url',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
                        if (!result.succ) {
                            console.log(result);
                            return;
                        }
                var html = '<div class="fn-clear"><label>' + config.label.url
                    + config.label.colon + '</label><a href="'
                    + url + '" target="_blank">' + url + "</a><br/>";
                        html += '<label>' + config.label.short_url + config.label.colon
                                + '</label><a href="' + result.data + '" target="_blank">'
                                + result.data + '</a><br/>';
                html += '<label>' + config.label.embeded + config.label.colon
                    + '</label><br/><textarea rows="5" style="width:100%" readonly><iframe style="border:1px solid" src="'
                    + url + '" width="99%" height="600"></iframe></textarea>';
@ -397,7 +389,6 @@ var playground = {
                $("#dialogShare").html(html);
                $("#dialogShare").dialog("open");
                    }});
            }
        });
    },
@ -420,7 +411,7 @@ var playground = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/playground/stop',
+            url: '/playground/stop',
            data: JSON.stringify(request),
            dataType: "json"
        });
@ -439,11 +430,11 @@ var playground = {
        var request = newWideRequest();
        request.code = code;
-        $("#output").val("");
+        $("#output").html("");
        $.ajax({
            type: 'POST',
-            url: config.context + '/playground/save',
+            url: '/playground/save',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
@ -452,7 +443,7 @@ var playground = {
                playground.editor.setValue(data.code);
                playground.editor.setCursor(cursor);
-                if (!result.succ) {
+                if (0 != result.code) {
                    return;
                }
@ -462,17 +453,15 @@ var playground = {
                $.ajax({
                    type: 'POST',
-                    url: config.context + '/playground/build',
+                    url: '/playground/build',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
                        console.log(result);
                        var data = result.data;
-                        $("#output").val(data.output);
+                        $("#output").html(data.output);
-                        if (!result.succ) {
+                        if (0 != result.code) {
                            return;
                        }
@ -482,7 +471,7 @@ var playground = {
                        $.ajax({
                            type: 'POST',
-                            url: config.context + '/playground/run',
+                            url: '/playground/run',
                            data: JSON.stringify(request),
                            dataType: "json",
                            success: function (result) {
@ -509,7 +498,7 @@ var playground = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/playground/save',
+            url: '/playground/save',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
--- a/static/js/session.js
+++ b/static/js/session.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -18,7 +18,7 @@
 * @file session.js
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
- * @version 1.1.0.1, Dec 8, 2015
+ * @version 1.1.0.2, Jun 23, 2019
 */
 var session = {
    init: function () {
@ -74,7 +74,7 @@ var session = {
            $.ajax({
                type: 'POST',
-                url: config.context + '/session/save',
+                url: '/session/save',
                data: JSON.stringify(request),
                dataType: "json",
                success: function (result) {
@ -158,8 +158,6 @@ var session = {
        var sessionWS = new ReconnectingWebSocket(config.channel + '/session/ws?sid=' + config.wideSessionId);
        sessionWS.onopen = function () {
            console.log('[session onopen] connected');
            var dateFormat = function (time, fmt) {
                var date = new Date(time);
                var dateObj = {
@ -238,7 +236,7 @@ var session = {
            }
        };
        sessionWS.onclose = function (e) {
-            console.log('[session onclose] disconnected (' + e.code + ')');
+            // console.log('[session onclose] disconnected (' + e.code + ')');
            var data = {type: "Network", severity: "ERROR",
                message: "Disconnected from server, trying to reconnect it [sid=" + config.wideSessionId + "]"},
@ -253,7 +251,7 @@ var session = {
            $(".notification-count").show();
        };
        sessionWS.onerror = function (e) {
-            console.log('[session onerror]');
+            console.log('[session onerror]', e);
        };
    }
 };
--- a/static/js/shell.js
+++ b/static/js/shell.js
@ -1,61 +0,0 @@
 /*
 * Copyright (c) 2014-2016, b3log.org & hacpai.com
 *
 * 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.
 */
 /*
 * @file shell.js
 *
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
 * @version 1.0.0.1, Dec 8, 2015
 */
 var shell = {
    _shellWS: undefined,
    _initWS: function () {
        shell.shellWS = new ReconnectingWebSocket(config.channel + '/shell/ws?sid=' + config.wideSessionId);
        shell.shellWS.onopen = function () {
            console.log('[shell onopen] connected');
        };
        shell.shellWS.onmessage = function (e) {
            console.log('[shell onmessage]' + e.data);
            var data = JSON.parse(e.data);
            if ('init-shell' !== data.cmd) {
                $('#shellOutput').val(data.output);
            }
        };
        shell.shellWS.onclose = function (e) {
            console.log('[shell onclose] disconnected (' + e.code + ')');
        };
        shell.shellWS.onerror = function (e) {
            console.log('[shell onerror] ' + e);
        };
    },
    init: function () {
        this._initWS();
        $('#shellInput').keydown(function (event) {
            if (13 === event.which) {
                var input = {
                    cmd: $('#shellInput').val()
                };
                shell.shellWS.send(JSON.stringify(input));
                $('#shellInput').val('');
            }
        });
    }
 };
 $(document).ready(function () {
    shell.init();
 });
--- a/static/js/tabs.js
+++ b/static/js/tabs.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
--- a/static/js/tree.js
+++ b/static/js/tree.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -160,11 +160,11 @@ var tree = {
        $.ajax({
            async: false,
            type: 'POST',
-            url: config.context + '/file/zip/new',
+            url: '/file/zip/new',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
-                if (!result.succ) {
+                if (0 != result.code) {
                    $("#dialogAlert").dialog("open", result.msg);
                    return false;
@ -175,7 +175,7 @@ var tree = {
        });
        if (isSucc) {
-            window.open(config.context + '/file/zip?path=' + wide.curNode.path + ".zip");
+            window.open('/file/zip?path=' + wide.curNode.path + ".zip");
        }
    },
    crossCompile: function (platform) {
@ -186,11 +186,11 @@ var tree = {
        $.ajax({
            async: false,
            type: 'POST',
-            url: config.context + '/cross',
+            url: '/cross',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
-                if (!result.succ) {
+                if (0 != result.code) {
                    $("#dialogAlert").dialog("open", result.msg);
                    return false;
@ -198,28 +198,6 @@ var tree = {
            }
        });
    },
    decompress: function () {
        var request = newWideRequest();
        request.path = wide.curNode.path;
        $.ajax({
            async: false,
            type: 'POST',
            url: config.context + '/file/decompress',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
                if (!result.succ) {
                    $("#dialogAlert").dialog("open", result.msg);
                    return false;
                }
                var dir = wide.curNode.getParentNode();
                tree.fileTree.reAsyncChildNodes(dir, "refresh");
            }
        });
    },
    refresh: function (it) {
        if (it) {
            if ($(it).hasClass("disabled")) {
@ -229,31 +207,6 @@ var tree = {
        tree.fileTree.reAsyncChildNodes(wide.curNode, "refresh", true);
    },
    gitClone: function (it) {
        if (it) {
            if ($(it).hasClass("disabled")) {
                return false;
            }
        }
        $("#dialogGitClonePrompt").dialog('open');
    },
    import: function () {
        var request = newWideRequest();
        request.path = wide.curNode.path;
        $('#importFileupload').fileupload({
            url: "/file/upload?path=" + request.path,
            dataType: 'json',
            formData: request,
            done: function (e, result) {
                tree.fileTree.reAsyncChildNodes(wide.curNode, "refresh");
            },
            fail: function () {
                console.log(arguments);
            }
        });
    },
    init: function () {
        $("#file").click(function () {
            $(this).focus();
@ -263,11 +216,11 @@ var tree = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/files',
+            url: '/files',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
-                if (result.succ) {
+                if (0 == result.code) {
                    var $dirRMenu = $("#dirRMenu");
                    var $fileRMenu = $("#fileRMenu");
                    var setting = {
@ -282,7 +235,7 @@ var tree = {
                        },
                        async: {
                            enable: true,
-                            url: config.context + "/file/refresh",
+                            url: "/file/refresh",
                            autoParam: ["path"]
                        },
                        callback: {
@ -417,11 +370,11 @@ var tree = {
            $.ajax({
                async: false,
                type: 'POST',
-                url: config.context + '/file',
+                url: '/file',
                data: JSON.stringify(request),
                dataType: "json",
                success: function (result) {
-                    if (!result.succ) {
+                    if (0 != result.code) {
                        $("#dialogAlert").dialog("open", result.msg);
                        return false;
@ -444,7 +397,7 @@ var tree = {
                    if ("img" === data.mode) { // 是图片文件的话新建 tab 打开
                        // 最好是开 tab，但这个最终取决于浏览器设置
-                        var w = window.open(config.context + data.path);
+                        var w = window.open(data.path);
                        return false;
                    }
@ -506,11 +459,11 @@ var tree = {
                $.ajax({
                    type: 'POST',
-                    url: config.context + '/file/search/text',
+                    url: '/file/search/text',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
-                        if (!result.succ) {
+                        if (0 != result.code) {
                            return;
                        }
@ -542,11 +495,11 @@ var tree = {
                $.ajax({
                    type: 'POST',
-                    url: config.context + '/file/rename',
+                    url: '/file/rename',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
-                        if (!result.succ) {
+                        if (0 != result.code) {
                            $("#dialogRenamePrompt").dialog("close");
                            bottomGroup.tabs.setCurrent("notification");
                            windows.flowBottom();
--- a/static/js/wide.js
+++ b/static/js/wide.js
@ -1,11 +1,11 @@
 /*
- * Copyright (c) 2014-2016, b3log.org & hacpai.com
+ * Copyright (c) 2014-present, b3log.org
 *
 * 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
+ *     https://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,
@ -19,7 +19,7 @@
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.0.0.1, Dec 8, 2015
+ * @version 1.0.0.2, Jun 23, 2019
 */
 var wide = {
    curNode: undefined,
@ -38,11 +38,11 @@ var wide = {
        $.ajax({
            type: 'POST',
            async: false,
-            url: config.context + '/outline',
+            url: '/outline',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
-                if (!result.succ) {
+                if (0 != result.code) {
                    return;
                }
@ -121,11 +121,11 @@ var wide = {
                $.ajax({
                    type: 'POST',
-                    url: config.context + '/file/remove',
+                    url: '/file/remove',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
-                        if (!result.succ) {
+                        if (0 != result.code) {
                            $("#dialogRemoveConfirm").dialog("close");
                            bottomGroup.tabs.setCurrent("notification");
                            windows.flowBottom();
@ -159,11 +159,11 @@ var wide = {
                $.ajax({
                    type: 'POST',
-                    url: config.context + '/file/new',
+                    url: '/file/new',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
-                        if (!result.succ) {
+                        if (0 != result.code) {
                            $("#dialogNewFilePrompt").dialog("close");
                            bottomGroup.tabs.setCurrent("notification");
                            windows.flowBottom();
@ -203,11 +203,11 @@ var wide = {
                $.ajax({
                    type: 'POST',
-                    url: config.context + '/file/new',
+                    url: '/file/new',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
-                        if (!result.succ) {
+                        if (0 != result.code) {
                            $("#dialogNewDirPrompt").dialog("close");
                            bottomGroup.tabs.setCurrent("notification");
                            windows.flowBottom();
@ -264,11 +264,11 @@ var wide = {
                    $.ajax({
                        type: 'POST',
-                        url: config.context + '/file/find/name',
+                        url: '/file/find/name',
                        data: JSON.stringify(request),
                        dataType: "json",
                        success: function (result) {
-                            if (!result.succ) {
+                            if (0 != result.code) {
                                return;
                            }
@ -339,44 +339,15 @@ var wide = {
                editor.focus();
            }
        });
        $("#dialogGitClonePrompt").dialog({
            "modal": true,
            "height": 52,
            "width": 360,
            "title": config.label.git_clone,
            "okText": config.label.confirm,
            "cancelText": config.label.cancel,
            "afterOpen": function () {
                $("#dialogGitClonePrompt > input").val('').focus();
                $("#dialogGitClonePrompt").closest(".dialog-main").find(".dialog-footer > button:eq(0)").prop("disabled", true);
            },
            "ok": function () {
                $("#dialogGitClonePrompt").dialog("close");
                var request = newWideRequest();
                request.path = wide.curNode.path;
                request.repository = $("#dialogGitClonePrompt > input").val();
                $.ajax({
                    type: 'POST',
                    url: config.context + '/git/clone',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
                    }
                });
            }
        });
    },
    _initWS: function () {
        var outputWS = new ReconnectingWebSocket(config.channel + '/output/ws?sid=' + config.wideSessionId);
        outputWS.onopen = function () {
-            console.log('[output onopen] connected');
+            // console.log('[output onopen] connected');
        };
        outputWS.onmessage = function (e) {
-            console.log('[output onmessage]' + e.data);
+            // console.log('[output onmessage]' + e.data);
            var data = JSON.parse(e.data);
            if (goLintFound) {
@ -389,7 +360,7 @@ var wide = {
                $.ajax({
                    type: 'POST',
-                    url: config.context + '/run',
+                    url: '/run',
                    data: JSON.stringify(request),
                    dataType: "json"
                });
@ -419,15 +390,12 @@ var wide = {
                case 'start-test':
                case 'start-vet':
                case 'start-install':
                case 'start-get':
                case 'start-git_clone':
                    bottomGroup.fillOutput(data.output);
                    break;
                case 'go test':
                case 'go vet':
                case 'go install':
                case 'go get':
                    bottomGroup.fillOutput($('.bottom-window-group .output > div').html() + data.output);
                    break;
@ -471,11 +439,11 @@ var wide = {
                            $.ajax({
                                async: false,
                                type: 'POST',
-                                url: config.context + '/file/zip/new',
+                                url: '/file/zip/new',
                                data: JSON.stringify(request),
                                dataType: "json",
                                success: function (result) {
-                                    if (!result.succ) {
+                                    if (0 != result.code) {
                                        $("#dialogAlert").dialog("open", result.msg);
                                        return false;
@ -486,7 +454,7 @@ var wide = {
                            });
                            if (path) {
-                                window.open(config.context + '/file/zip?path=' + path + ".zip");
+                                window.open('/file/zip?path=' + path + ".zip");
                            }
                        }
                    }
@ -495,10 +463,10 @@ var wide = {
            }
        };
        outputWS.onclose = function (e) {
-            console.log('[output onclose] disconnected (' + e.code + ')');
+            // console.log('[output onclose] disconnected (' + e.code + ')');
        };
        outputWS.onerror = function (e) {
-            console.log('[output onerror]');
+            console.log('[output onerror]',e);
        };
    },
    _initFooter: function () {
@ -551,7 +519,7 @@ var wide = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/file/save',
+            url: '/file/save',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
@ -587,7 +555,7 @@ var wide = {
            request.nextCmd = ""; // build only, no following operation
            $.ajax({
                type: 'POST',
-                url: config.context + '/build',
+                url: '/build',
                data: JSON.stringify(request),
                dataType: "json",
                beforeSend: function () {
@ -620,7 +588,7 @@ var wide = {
        $.ajax({
            type: 'POST',
-            url: config.context + '/stop',
+            url: '/stop',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
@ -642,11 +610,11 @@ var wide = {
        $.ajax({
            async: false, // sync
            type: 'POST',
-            url: config.context + '/go/fmt',
+            url: '/go/fmt',
            data: JSON.stringify(request),
            dataType: "json",
            success: function (result) {
-                if (result.succ) {
+                if (0 == result.code) {
                    editor.setValue(result.data.code);
                    editor.setCursor(cursor);
                    editor.scrollTo(null, scrollInfo.top);
@ -675,11 +643,11 @@ var wide = {
                $.ajax({
                    async: false, // sync
                    type: 'POST',
-                    url: config.context + '/go/fmt',
+                    url: '/go/fmt',
                    data: JSON.stringify(request),
                    dataType: "json",
                    success: function (result) {
-                        if (result.succ) {
+                        if (0 == result.code) {
                            formatted = result.data.code;
                        }
                    }
--- a/Show More
+++ b/Show More
		`@ -1,2 +0,0 @@`
			`* [User Guide](https://www.gitbook.com/book/88250/wide-user-guide)`
			`* [Developer Guide](https://www.gitbook.com/book/88250/wide-dev-guide)`