♻️ 引入 Gulu 工具库

conf/wide.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2014-present, b3log.org
+// Copyright (c) 2014-present, b3gulu.Log.org
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -27,9 +27,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/event"
-	"github.com/b3log/wide/log"
-	"github.com/b3log/wide/util"
 )
 
 const (
@@ -69,7 +68,7 @@ type conf struct {
 }
 
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 
 // Wide configurations.
 var Wide *conf
@@ -91,7 +90,7 @@ func Load(confPath, confData, confServer, confLogLevel string, confSiteStatCode
 	cmd := exec.Command("docker", "version")
 	_, err := cmd.CombinedOutput()
 	if nil != err {
-		if !util.OS.IsWindows() {
+		if !gulu.OS.IsWindows() {
 			logger.Errorf("Not found 'docker' installed, running user's code will cause security problem")
 
 			os.Exit(-1)
@@ -179,16 +178,16 @@ func initWide(confPath, confData, confServer, confLogLevel string, confSiteStatC
 	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))
 
 	// 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)
 
@@ -241,14 +240,14 @@ func FixedTimeCheckEnv() {
 	checkEnv() // check immediately
 
 	go func() {
-		for _ = range time.Tick(time.Minute * 7) {
+		for _ = range time.Tick(time.Minute*7) {
 			checkEnv()
 		}
 	}()
 }
 
 func checkEnv() {
-	defer util.Recover()
+	defer gulu.Panic.Recover()
 
 	cmd := exec.Command("go", "version")
 	buf, err := cmd.CombinedOutput()
@@ -265,7 +264,7 @@ 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 {
@@ -274,7 +273,7 @@ func checkEnv() {
 		logger.Warnf("Not found gocode [%s], please install it with this command: go get github.com/nsf/gocode", gocode)
 	}
 
-	ideStub := util.Go.GetExecutableInGOBIN("gotools")
+	ideStub := gulu.Go.GetExecutableInGOBIN("gotools")
 	cmd = exec.Command(ideStub, "version")
 	_, err = cmd.Output()
 	if nil != err {
@@ -303,7 +302,7 @@ func GetGoFmt(userId string) string {
 			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"
@@ -413,7 +412,7 @@ 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)
 

editor/editors.go

@@ -27,16 +27,16 @@ import (
 	"strings"
 	"time"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/file"
-	"github.com/b3log/wide/log"
 	"github.com/b3log/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
@@ -77,7 +77,7 @@ func WSHandler(w http.ResponseWriter, r *http.Request) {
 
 		logger.Tracef("offset: %d", offset)
 
-		gocode := util.Go.GetExecutableInGOBIN("gocode")
+		gocode := gulu.Go.GetExecutableInGOBIN("gocode")
 		argv := []string{"-f=json", "autocomplete", strconv.Itoa(offset)}
 
 		var output bytes.Buffer
@@ -159,7 +159,7 @@ func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
 	logger.Tracef("gocode set lib-path [%s]", libPath)
 
 	// FIXME: using gocode set lib-path has some issues while accrossing workspaces
-	gocode := util.Go.GetExecutableInGOBIN("gocode")
+	gocode := gulu.Go.GetExecutableInGOBIN("gocode")
 	exec.Command(gocode, []string{"set", "lib-path", libPath}...).Run()
 
 	argv := []string{"-f=json", "--in=" + path, "autocomplete", strconv.Itoa(offset)}
@@ -179,8 +179,8 @@ 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, session.CookieName)
 	uid := session.Values["uid"].(string)
@@ -223,7 +223,7 @@ 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
@@ -250,8 +250,8 @@ 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, session.CookieName)
 	if session.IsNew {
@@ -299,7 +299,7 @@ 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
@@ -338,8 +338,8 @@ 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, session.CookieName)
 	if session.IsNew {
@@ -387,7 +387,7 @@ 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

editor/formatter.go

@@ -20,9 +20,9 @@ import (
 	"os"
 	"os/exec"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // GoFmtHandler handles request of formatting Go source code.
@@ -31,8 +31,8 @@ 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, session.CookieName)
 	if session.IsNew {
@@ -53,7 +53,7 @@ func GoFmtHandler(w http.ResponseWriter, r *http.Request) {
 
 	filePath := args["file"].(string)
 
-	if util.Go.IsAPI(filePath) {
+	if gulu.Go.IsAPI(filePath) {
 		result.Succ = false
 
 		return

event/events.go

@@ -18,8 +18,7 @@ package event
 import (
 	"os"
 
-	"github.com/b3log/wide/log"
+	"github.com/b3log/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()
 
 		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()
 
 		for evt := range q.Queue {
 			logger.Debugf("Session [%s] received an event [%d]", sid, evt.Code)

file/exporter.go

@@ -20,7 +20,7 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/b3log/wide/util"
+	"github.com/b3log/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
@@ -51,8 +51,8 @@ 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 {
@@ -75,7 +75,7 @@ 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.Msg = "Can't find file [" + path + "]"
 
@@ -83,7 +83,7 @@ func CreateZipHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	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
@@ -92,7 +92,7 @@ func CreateZipHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	defer zipFile.Close()
 
-	if util.File.IsDir(path) {
+	if gulu.File.IsDir(path) {
 		zipFile.AddDirectory(base, path)
 	} else {
 		zipFile.AddEntry(base, path)

file/files.go

@@ -24,15 +24,14 @@ import (
 	"sort"
 	"strings"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/event"
-	"github.com/b3log/wide/log"
 	"github.com/b3log/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{}}
@@ -82,8 +81,8 @@ func GetFilesHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	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(uid)
 	workspaces := filepath.SplitList(userWorkspace)
@@ -134,7 +133,7 @@ func RefreshDirectoryHandler(w http.ResponseWriter, r *http.Request) {
 	r.ParseForm()
 	path := r.FormValue("path")
 
-	if !util.Go.IsAPI(path) && !session.CanAccess(uid, path) {
+	if !gulu.Go.IsAPI(path) && !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
 		return
@@ -164,8 +163,8 @@ func GetFileHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	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{}
 
@@ -178,13 +177,13 @@ func GetFileHandler(w http.ResponseWriter, r *http.Request) {
 
 	path := args["path"].(string)
 
-	if !util.Go.IsAPI(path) && !session.CanAccess(uid, 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.Msg = "This file is too large to open :("
@@ -199,7 +198,7 @@ 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"
@@ -221,7 +220,7 @@ func GetFileHandler(w http.ResponseWriter, r *http.Request) {
 
 	content := string(buf)
 
-	if util.File.IsBinary(content) {
+	if gulu.File.IsBinary(content) {
 		result.Succ = false
 		result.Msg = "Can't open a binary file :("
 	} else {
@@ -240,8 +239,8 @@ func SaveFileHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	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{}
 
@@ -255,7 +254,7 @@ func SaveFileHandler(w http.ResponseWriter, r *http.Request) {
 	filePath := args["file"].(string)
 	sid := args["sid"].(string)
 
-	if util.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
+	if gulu.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
 		return
@@ -296,8 +295,8 @@ func NewFileHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	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{}
 
@@ -310,7 +309,7 @@ func NewFileHandler(w http.ResponseWriter, r *http.Request) {
 
 	path := args["path"].(string)
 
-	if util.Go.IsAPI(path) || !session.CanAccess(uid, path) {
+	if gulu.Go.IsAPI(path) || !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
 		return
@@ -348,8 +347,8 @@ func RemoveFileHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	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{}
 
@@ -362,7 +361,7 @@ func RemoveFileHandler(w http.ResponseWriter, r *http.Request) {
 
 	path := args["path"].(string)
 
-	if util.Go.IsAPI(path) || !session.CanAccess(uid, path) {
+	if gulu.Go.IsAPI(path) || !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
 		return
@@ -394,8 +393,8 @@ func RenameFileHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	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{}
 
@@ -407,7 +406,7 @@ func RenameFileHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	oldPath := args["oldPath"].(string)
-	if util.Go.IsAPI(oldPath) ||
+	if gulu.Go.IsAPI(oldPath) ||
 		!session.CanAccess(uid, oldPath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
@@ -415,7 +414,7 @@ func RenameFileHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	newPath := args["newPath"].(string)
-	if util.Go.IsAPI(newPath) || !session.CanAccess(uid, newPath) {
+	if gulu.Go.IsAPI(newPath) || !session.CanAccess(uid, newPath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
 		return
@@ -459,8 +458,8 @@ func FindHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	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 {
@@ -471,7 +470,7 @@ func FindHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	path := args["path"].(string) // path of selected file in file tree
-	if !util.Go.IsAPI(path) && !session.CanAccess(uid, path) {
+	if !gulu.Go.IsAPI(path) && !session.CanAccess(uid, path) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
 		return
@@ -482,7 +481,7 @@ func FindHandler(w http.ResponseWriter, r *http.Request) {
 	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 +491,7 @@ 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)})
 		}
@@ -512,8 +511,8 @@ func SearchTextHandler(w http.ResponseWriter, r *http.Request) {
 		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{}
 
@@ -545,7 +544,7 @@ 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 +643,7 @@ 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 +762,7 @@ 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 +835,7 @@ func searchInFile(path string, text string) []*Snippet {
 	}
 
 	content := string(bytes)
-	if util.File.IsBinary(content) {
+	if gulu.File.IsBinary(content) {
 		return ret
 	}
 

file/outline.go

@@ -23,7 +23,7 @@ import (
 	"net/http"
 	"strings"
 
-	"github.com/b3log/wide/util"
+	"github.com/b3log/gulu"
 )
 
 type element struct {
@@ -34,8 +34,8 @@ 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{}
 

go.mod

@@ -3,6 +3,7 @@ module github.com/b3log/wide
 go 1.12
 
 require (
+	github.com/b3log/gulu v0.0.0-20190524125155-0ed03084217c
 	github.com/elazarl/goproxy v0.0.0-20190421051319-9d40249d3c2f // indirect
 	github.com/elazarl/goproxy/ext v0.0.0-20190421051319-9d40249d3c2f // indirect
 	github.com/fsnotify/fsnotify v1.4.7
@@ -10,12 +11,12 @@ require (
 	github.com/gorilla/securecookie v0.0.0-20150327155805-8e98dd730fc4 // indirect
 	github.com/gorilla/sessions v0.0.0-20150417174705-f61c3ec2cf65
 	github.com/gorilla/websocket v0.0.0-20150530030352-a3ec486e6a7a
-	github.com/hashicorp/go-version v1.2.0
 	github.com/moul/http2curl v1.0.0 // indirect
 	github.com/parnurzeal/gorequest v0.2.15
 	github.com/pkg/errors v0.8.1 // indirect
 	github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a // indirect
-	golang.org/x/net v0.0.0-20190514140710-3ec191127204 // indirect
+	golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f // indirect
-	golang.org/x/sys v0.0.0-20190515190549-87c872767d25 // indirect
+	golang.org/x/net v0.0.0-20190522155817-f3200d17e092 // indirect
-	golang.org/x/text v0.3.2
+	golang.org/x/sys v0.0.0-20190524122548-abf6ff778158 // indirect
+	golang.org/x/tools v0.0.0-20190523174634-38d8bcfa38af // indirect
 )

go.sum

@@ -1,3 +1,7 @@
+github.com/b3log/gulu v0.0.0-20190524124046-926f105c6dd8 h1:Ir8QVO1dwv6MEdkAE7L1oS5bJheb0Dr+AYmBXskQPF0=
+github.com/b3log/gulu v0.0.0-20190524124046-926f105c6dd8/go.mod h1:UmyB0pe8jv1K3dZy/4UE3uCpM8zYkB4nbiIgjemuQ7A=
+github.com/b3log/gulu v0.0.0-20190524125155-0ed03084217c h1:1+Pr5/IUfYBTiZVyzX7CfdkLVtL+LZa5yrxhjLlPYXY=
+github.com/b3log/gulu v0.0.0-20190524125155-0ed03084217c/go.mod h1:UmyB0pe8jv1K3dZy/4UE3uCpM8zYkB4nbiIgjemuQ7A=
 github.com/elazarl/goproxy v0.0.0-20190421051319-9d40249d3c2f h1:8GDPb0tCY8LQ+OJ3dbHb5sA6YZWXFORQYZx5sdsTlMs=
 github.com/elazarl/goproxy v0.0.0-20190421051319-9d40249d3c2f/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
 github.com/elazarl/goproxy/ext v0.0.0-20190421051319-9d40249d3c2f h1:AUj1VoZUfhPhOPHULCQQDnGhRelpFWHMLhQVWDsS0v4=
@@ -14,8 +18,6 @@ github.com/gorilla/sessions v0.0.0-20150417174705-f61c3ec2cf65 h1:bDPV+Nh80WIp0U
 github.com/gorilla/sessions v0.0.0-20150417174705-f61c3ec2cf65/go.mod h1:+WVp8kdw6VhyKExm03PAMRn2ZxnPtm58pV0dBVPdhHE=
 github.com/gorilla/websocket v0.0.0-20150530030352-a3ec486e6a7a h1:p/PGT+3UGSK7eULOGHUMCUxI5U976R34HWuKHbFpK3Q=
 github.com/gorilla/websocket v0.0.0-20150530030352-a3ec486e6a7a/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
-github.com/hashicorp/go-version v1.2.0 h1:3vNe/fWF5CBgRIguda1meWhsZHy3m8gCJ5wx+dIzX/E=
-github.com/hashicorp/go-version v1.2.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
 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/moul/http2curl v1.0.0 h1:dRMWoAtb+ePxMlLkrCbAqh4TlPHXvoGUSQ323/9Zahs=
@@ -30,14 +32,22 @@ github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1
 github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a h1:pa8hGb/2YqsZKovtsgrwcDH1RZhVbTKCjLp47XpqCDs=
 github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a/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/crypto v0.0.0-20190513172903-22d7a77e9e5f/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190514140710-3ec191127204 h1:4yG6GqBtw9C+UrLp6s2wtSniayy/Vd/3F7ffLE427XI=
 golang.org/x/net v0.0.0-20190514140710-3ec191127204/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190522155817-f3200d17e092 h1:4QSRKanuywn15aTZvI/mIDEgPQpswuFndXpOj3rKEco=
+golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190515190549-87c872767d25 h1:SSKQq5sjDoW0L0NaDoVl7d7HmtTxM0ezm0Ef9azs4uQ=
 golang.org/x/sys v0.0.0-20190515190549-87c872767d25/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190524122548-abf6ff778158/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=
+golang.org/x/tools v0.0.0-20190523174634-38d8bcfa38af/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=

i18n/locales.go

@@ -22,11 +22,11 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/b3log/wide/log"
+	"github.com/b3log/gulu"
 )
 
 // Logger.
-var logger = log.NewLogger(os.Stdout)
+var logger = gulu.Log.NewLogger(os.Stdout)
 
 // Locale.
 type locale struct {

log/logs.go

@@ -1,217 +0,0 @@
-// 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 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...))
-}

log/logs_test.go

@@ -1,169 +0,0 @@
-// 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 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
-	}
-}

main.go

@@ -29,21 +29,20 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/editor"
 	"github.com/b3log/wide/event"
 	"github.com/b3log/wide/file"
 	"github.com/b3log/wide/i18n"
-	"github.com/b3log/wide/log"
 	"github.com/b3log/wide/notification"
 	"github.com/b3log/wide/output"
 	"github.com/b3log/wide/playground"
 	"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() {
@@ -55,10 +54,10 @@ func init() {
 
 	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()) {
 	//	logger.Error("Don't run Wide in OS' temp directory or with `go run`")
 	//
@@ -74,7 +73,7 @@ func init() {
 	session.FixedTimeRelease()
 	session.FixedTimeReport()
 
-	logger.Debug("host ["+runtime.Version()+", "+runtime.GOOS+"_"+runtime.GOARCH+"], cross-compilation ", util.Go.GetCrossPlatforms())
+	logger.Debug("host ["+runtime.Version()+", "+runtime.GOOS+"_"+runtime.GOARCH+"], cross-compilation ", gulu.Go.GetCrossPlatforms())
 }
 
 // Main.
@@ -204,7 +203,7 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 	model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
 		"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": gulu.Go.GetCrossPlatforms()}
 
 	logger.Debugf("User [%s] has [%d] sessions", uid, len(wideSessions))
 
@@ -409,7 +408,7 @@ 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()
 
 		handler(w, r)
 	}

notification/notifications.go

@@ -21,10 +21,10 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/event"
 	"github.com/b3log/wide/i18n"
-	"github.com/b3log/wide/log"
 	"github.com/b3log/wide/session"
 	"github.com/b3log/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 {

output/build.go

@@ -18,6 +18,7 @@ import (
 	"bufio"
 	"encoding/json"
 	"fmt"
+	"github.com/b3log/gulu"
 	"io"
 	"net/http"
 	"os"
@@ -30,13 +31,12 @@ import (
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // 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, session.CookieName)
 	if httpSession.IsNew {
@@ -58,7 +58,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 
 	sid := args["sid"].(string)
 	filePath := args["file"].(string)
-	if util.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
+	if gulu.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
 		return
@@ -98,7 +98,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	var goModCmd *exec.Cmd
-	if !util.File.IsExist(filepath.Join(curDir, "go.mod")) {
+	if !gulu.File.IsExist(filepath.Join(curDir, "go.mod")) {
 		curDirName := filepath.Base(curDir)
 		goModCmd = exec.Command("go", "mod", "init", curDirName)
 	} else {
@@ -118,7 +118,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 	var goBuildArgs []string
 	goBuildArgs = append(goBuildArgs, "build")
 	goBuildArgs = append(goBuildArgs, user.BuildArgs(runtime.GOOS)...)
-	if !util.Str.Contains("-i", goBuildArgs) {
+	if !gulu.Str.Contains("-i", goBuildArgs) {
 		goBuildArgs = append(goBuildArgs, "-i")
 	}
 
@@ -127,7 +127,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 	setCmdEnv(cmd, uid)
 
 	suffix := ""
-	if util.OS.IsWindows() {
+	if gulu.OS.IsWindows() {
 		suffix = ".exe"
 	}
 	executable := filepath.Base(curDir) + suffix
@@ -167,7 +167,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 
 	/////////
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 
 		for {
 			wsChannel := session.OutputWS[sid]

output/cross.go

@@ -26,16 +26,16 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // 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, session.CookieName)
 	if httpSession.IsNew {
@@ -58,7 +58,7 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 	sid := args["sid"].(string)
 	filePath := args["path"].(string)
 
-	if util.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
+	if gulu.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
 		http.Error(w, "Forbidden", http.StatusForbidden)
 
 		return
@@ -152,7 +152,7 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	go func(runningId int) {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 		defer cmd.Wait()
 
 		// read all

output/install.go

@@ -26,16 +26,16 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // 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, session.CookieName)
 	if httpSession.IsNew {
@@ -116,7 +116,7 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	go func(runningId int) {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 		defer cmd.Wait()
 
 		logger.Debugf("User [%s, %s] is running [go install] [id=%d, dir=%s]", uid, sid, runningId, curDir)

output/outputs.go

@@ -25,8 +25,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
-	"github.com/b3log/wide/log"
 	"github.com/b3log/wide/session"
 	"github.com/b3log/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 {
@@ -122,7 +122,7 @@ func setCmdEnv(cmd *exec.Cmd, uid string) {
 		"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 {

output/test.go

@@ -24,16 +24,16 @@ import (
 	"os/exec"
 	"path/filepath"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // 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, session.CookieName)
 	if httpSession.IsNew {
@@ -112,7 +112,7 @@ func GoTestHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	go func(runningId int) {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 
 		logger.Debugf("User [%s, %s] is running [go test] [runningId=%d]", uid, sid, runningId)
 

output/vet.go

@@ -24,16 +24,16 @@ import (
 	"os/exec"
 	"path/filepath"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // 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, session.CookieName)
 	if httpSession.IsNew {
@@ -112,7 +112,7 @@ func GoVetHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	go func(runningId int) {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 
 		logger.Debugf("User [%s, %s] is running [go vet] [runningId=%d]", uid, sid, runningId)
 

playground/autocomplete.go

@@ -22,8 +22,8 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // AutocompleteHandler handles request of code autocompletion.
@@ -51,7 +51,7 @@ func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
 	offset := getCursorOffset(code, line, ch)
 
 	argv := []string{"-f=json", "autocomplete", strconv.Itoa(offset)}
-	gocode := util.Go.GetExecutableInGOBIN("gocode")
+	gocode := gulu.Go.GetExecutableInGOBIN("gocode")
 	cmd := exec.Command(gocode, argv...)
 
 	stdin, _ := cmd.StdinPipe()

playground/build.go

@@ -22,15 +22,15 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // 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, session.CookieName)
 	if httpSession.IsNew {
@@ -51,7 +51,7 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 	filePath := filepath.Clean(conf.Wide.Data + "/playground/" + fileName)
 
 	suffix := ""
-	if util.OS.IsWindows() {
+	if gulu.OS.IsWindows() {
 		suffix = ".exe"
 	}
 

playground/file.go

@@ -24,15 +24,15 @@ import (
 	"os/exec"
 	"path/filepath"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/session"
-	"github.com/b3log/wide/util"
 )
 
 // 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, session.CookieName)
 	if session.IsNew {

playground/playgrounds.go

@@ -26,16 +26,16 @@ import (
 	"strings"
 	"time"
 
+	"github.com/b3log/gulu"
 	"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"
 )
 
 // 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) {
@@ -59,7 +59,7 @@ func IndexHandler(w http.ResponseWriter, r *http.Request) {
 
 	if strings.HasSuffix(r.URL.Path, ".go") {
 		fileNameArg := r.URL.Path[len("/playground/"):]
-		filePath := filepath.Clean(conf.Wide.Data+ "/playground/" + fileNameArg)
+		filePath := filepath.Clean(conf.Wide.Data + "/playground/" + fileNameArg)
 
 		bytes, err := ioutil.ReadFile(filePath)
 		if nil != err {

session/oauth.go

@@ -25,9 +25,9 @@ import (
 	"strings"
 	"time"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
-	"github.com/b3log/wide/util"
 	"github.com/parnurzeal/gorequest"
 )
 
@@ -35,7 +35,7 @@ var states = map[string]string{}
 
 // RedirectGitHubHandler redirects to GitHub auth page.
 func RedirectGitHubHandler(w http.ResponseWriter, r *http.Request) {
-	requestResult := util.NewResult()
+	requestResult := gulu.Ret.NewResult()
 	_, _, errs := gorequest.New().TLSClientConfig(&tls.Config{InsecureSkipVerify: true}).
 		Get("https://hacpai.com/oauth/wide/client").
 		Set("user-agent", conf.UserAgent).Timeout(10 * time.Second).EndStruct(requestResult)
@@ -57,7 +57,7 @@ func RedirectGitHubHandler(w http.ResponseWriter, r *http.Request) {
 
 	state := r.URL.Query().Get("state")
 	referer := conf.Wide.Server + "__" + state
-	state = util.Rand.String(16) + referer
+	state = gulu.Rand.String(16) + referer
 	states[state] = state
 	path := loginAuthURL + "?client_id=" + clientId + "&state=" + state + "&scope=public_repo,read:user,user:follow"
 	http.Redirect(w, r, path, http.StatusSeeOther)
@@ -93,10 +93,10 @@ func GithubCallbackHandler(w http.ResponseWriter, r *http.Request) {
 	if nil == user {
 		msg := addUser(githubId, userName, avatar)
 		if userCreated != msg {
-			result := util.NewResult()
+			result := gulu.Ret.NewResult()
 			result.Succ = false
 			result.Msg = msg
-			util.RetResult(w, r, result)
+			gulu.Ret.RetResult(w, r, result)
 
 			return
 		}
@@ -149,8 +149,8 @@ func LoginHandler(w http.ResponseWriter, r *http.Request) {
 
 // LogoutHandler handles request of user logout (exit).
 func LogoutHandler(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, _ := HTTPSession.Get(r, CookieName)
 

session/processes.go

@@ -17,8 +17,6 @@ package session
 import (
 	"bufio"
 	"encoding/json"
-	"github.com/b3log/wide/conf"
-	"github.com/b3log/wide/util"
 	"math/rand"
 	"net/http"
 	"os"
@@ -28,6 +26,10 @@ import (
 	"strings"
 	"sync"
 	"time"
+
+	"github.com/b3log/gulu"
+	"github.com/b3log/wide/conf"
+	"github.com/b3log/wide/util"
 )
 
 // Type of process set.
@@ -43,8 +45,8 @@ 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 := util.NewResult()
+	result := gulu.Ret.NewResult()
-	defer util.RetResult(w, r, result)
+	defer gulu.Ret.RetResult(w, r, result)
 
 	var args map[string]interface{}
 
@@ -120,12 +122,12 @@ func RunHandler(w http.ResponseWriter, r *http.Request, channel map[string]*util
 	}
 
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 
 		logger.Debugf("User [%s, %s] is running [id=%s, file=%s]", wSession.UserId, sid, rid, filePath)
 
 		go func() {
-			defer util.Recover()
+			defer gulu.Panic.Recover()
 
 			for {
 				r, _, err := outReader.ReadRune()
@@ -196,8 +198,8 @@ func RunHandler(w http.ResponseWriter, r *http.Request, channel map[string]*util
 
 // StopHandler handles request of stopping a running process.
 func StopHandler(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 {

session/sessions.go

@@ -35,9 +35,9 @@ import (
 	"sync"
 	"time"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/event"
-	"github.com/b3log/wide/log"
 	"github.com/b3log/wide/util"
 	"github.com/fsnotify/fsnotify"
 	"github.com/gorilla/sessions"
@@ -46,13 +46,13 @@ import (
 
 const (
 	sessionStateActive = iota
-	sessionStateClosed  // (not used so far)
+	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>
@@ -105,7 +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()
 
 		for _ = range time.Tick(time.Hour) {
 			hour, _ := time.ParseDuration("-30m")
@@ -139,9 +139,9 @@ func (u *userReport) report() string {
 // FixedTimeReport reports the Wide sessions status periodically (10 minutes).
 func FixedTimeReport() {
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 
-		for _ = range time.Tick(10*time.Minute) {
+		for _ = range time.Tick(10 * time.Minute) {
 			users := userReports{}
 			processSum := 0
 
@@ -284,8 +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
@@ -477,7 +477,7 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 	}
 
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 
 		for {
 			ch := SessionWS[sid]
@@ -500,7 +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 {
@@ -526,7 +526,7 @@ func (sessions *wSessions) new(httpSession *sessions.Session, sid string) *WideS
 	}()
 
 	go func() {
-		defer util.Recover()
+		defer gulu.Panic.Recover()
 
 		workspaces := filepath.SplitList(conf.GetUserWorkspace(uid))
 		for _, workspace := range workspaces {

session/users.go

@@ -24,17 +24,17 @@ import (
 	"text/template"
 	"time"
 
+	"github.com/b3log/gulu"
 	"github.com/b3log/wide/conf"
 	"github.com/b3log/wide/i18n"
-	"github.com/b3log/wide/util"
 )
 
 const (
 	// TODO: i18n
 
-	userExists       = "user exists"
+	userExists      = "user exists"
-	userCreated      = "user created"
+	userCreated     = "user created"
-	userCreateError  = "user create error"
+	userCreateError = "user create error"
 )
 
 // Exclusive lock for adding user.
@@ -67,7 +67,7 @@ func PreferenceHandler(w http.ResponseWriter, r *http.Request) {
 
 		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")
@@ -93,8 +93,8 @@ func PreferenceHandler(w http.ResponseWriter, r *http.Request) {
 
 	// 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
@@ -154,7 +154,7 @@ func PreferenceHandler(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()
 
 		for _ = range time.Tick(time.Minute) {
 			SaveOnlineUsers()

util/file.go

@@ -1,163 +0,0 @@
-// 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 util
-
-import (
-	"io"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"github.com/b3log/wide/log"
-)
-
-// Logger.
-var fileLogger = log.NewLogger(os.Stdout)
-
-type myfile struct{}
-
-// File utilities.
-var File = myfile{}
-
-// GetFileSize get the length in bytes of file of the specified path.
-func (*myfile) GetFileSize(path string) int64 {
-	fi, err := os.Stat(path)
-	if nil != err {
-		fileLogger.Error(err)
-
-		return -1
-	}
-
-	return fi.Size()
-}
-
-// IsExist determines whether the file spcified by the given path is exists.
-func (*myfile) IsExist(path string) bool {
-	_, err := os.Stat(path)
-
-	return err == nil || os.IsExist(err)
-}
-
-// IsBinary determines whether the specified content is a binary file content.
-func (*myfile) IsBinary(content string) bool {
-	for _, b := range content {
-		if 0 == b {
-			return true
-		}
-	}
-
-	return false
-}
-
-// IsImg determines whether the specified extension is a image.
-func (*myfile) IsImg(extension string) bool {
-	ext := strings.ToLower(extension)
-
-	switch ext {
-	case ".jpg", ".jpeg", ".bmp", ".gif", ".png", ".svg", ".ico":
-		return true
-	default:
-		return false
-	}
-}
-
-// IsDir determines whether the specified path is a directory.
-func (*myfile) IsDir(path string) bool {
-	fio, err := os.Lstat(path)
-	if os.IsNotExist(err) {
-		return false
-	}
-
-	if nil != err {
-		fileLogger.Warnf("Determines whether [%s] is a directory failed: [%v]", path, err)
-
-		return false
-	}
-
-	return fio.IsDir()
-}
-
-// CopyFile copies the source file to the dest file.
-func (*myfile) CopyFile(source string, dest string) (err error) {
-	sourcefile, err := os.Open(source)
-	if err != nil {
-		return err
-	}
-
-	defer sourcefile.Close()
-
-	destfile, err := os.Create(dest)
-	if err != nil {
-		return err
-	}
-
-	defer destfile.Close()
-
-	_, err = io.Copy(destfile, sourcefile)
-	if err == nil {
-		sourceinfo, err := os.Stat(source)
-		if err != nil {
-			err = os.Chmod(dest, sourceinfo.Mode())
-		}
-	}
-
-	return nil
-}
-
-// CopyDir copies the source directory to the dest directory.
-func (*myfile) CopyDir(source string, dest string) (err error) {
-	sourceinfo, err := os.Stat(source)
-	if err != nil {
-		return err
-	}
-
-	// create dest dir
-	err = os.MkdirAll(dest, sourceinfo.Mode())
-	if err != nil {
-		return err
-	}
-
-	directory, err := os.Open(source)
-	if err != nil {
-		return err
-	}
-
-	defer directory.Close()
-
-	objects, err := directory.Readdir(-1)
-	if err != nil {
-		return err
-	}
-
-	for _, obj := range objects {
-		srcFilePath := filepath.Join(source, obj.Name())
-		destFilePath := filepath.Join(dest, obj.Name())
-
-		if obj.IsDir() {
-			// create sub-directories - recursively
-			err = File.CopyDir(srcFilePath, destFilePath)
-			if err != nil {
-				fileLogger.Error(err)
-			}
-		} else {
-			err = File.CopyFile(srcFilePath, destFilePath)
-			if err != nil {
-				fileLogger.Error(err)
-			}
-		}
-	}
-
-	return nil
-}

util/file_test.go

@@ -1,81 +0,0 @@
-// 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 util
-
-import (
-	"path/filepath"
-	"strconv"
-	"testing"
-)
-
-func TestGetFileSize(t *testing.T) {
-	size := File.GetFileSize(".")
-
-	t.Log("size of file [.] is [" + strconv.FormatInt(size, 10) + "]")
-}
-
-func TestIsExist(t *testing.T) {
-	if !File.IsExist(".") {
-		t.Error(". must exist")
-
-		return
-	}
-}
-
-func TestIdBinary(t *testing.T) {
-	if File.IsBinary("not binary content") {
-		t.Error("The content should not be binary")
-
-		return
-	}
-}
-
-func TestIsImg(t *testing.T) {
-	if !File.IsImg(".jpg") {
-		t.Error(".jpg should be a valid extension of a image file")
-
-		return
-	}
-}
-
-func TestIsDir(t *testing.T) {
-	if !File.IsDir(".") {
-		t.Error(". should be a directory")
-
-		return
-	}
-}
-
-func TestCopyDir(t *testing.T) {
-	dest := filepath.Join(testDir, "util")
-
-	err := File.CopyDir(".", dest)
-	if nil != err {
-		t.Error("Copy dir error: ", err)
-
-		return
-	}
-}
-
-func TestCopyFile(t *testing.T) {
-	dest := filepath.Join(testDir, "file.go")
-
-	err := File.CopyFile("./file.go", dest)
-	if nil != err {
-		t.Error("Copy file error: ", err)
-
-		return
-	}
-}

util/go.go

@@ -1,118 +0,0 @@
-// 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 util
-
-import (
-	"os"
-	"path"
-	"path/filepath"
-	"runtime"
-	"sort"
-	"strings"
-)
-
-const (
-	pathSeparator     = string(os.PathSeparator)     // OS-specific path separator
-	pathListSeparator = string(os.PathListSeparator) // OS-specific path list separator
-)
-
-type mygo struct{}
-
-// Go utilities.
-var Go = mygo{}
-
-func (*mygo) GetCrossPlatforms() []string {
-	return []string{
-		"darwin_amd64", "linux_amd64", "windows_amd64",
-		"linux_arm", "darwin_386", "linux_386", "windows_386"}
-}
-
-// GetAPIPath gets the Go source code path.
-//
-//  1. before Go 1.4: $GOROOT/src/pkg
-//  2. Go 1.4 and after: $GOROOT/src
-func (*mygo) GetAPIPath() string {
-	ret := runtime.GOROOT() + "/src/pkg" // before Go 1.4
-	if !File.IsExist(ret) {
-		ret = runtime.GOROOT() + "/src" // Go 1.4 and after
-	}
-
-	return filepath.FromSlash(path.Clean(ret))
-}
-
-// IsAPI determines whether the specified path belongs to Go API.
-func (*mygo) IsAPI(path string) bool {
-	apiPath := Go.GetAPIPath()
-
-	return strings.HasPrefix(filepath.FromSlash(path), apiPath)
-}
-
-// GetGoFormats gets Go format tools. It may return ["gofmt", "goimports"].
-func (*mygo) GetGoFormats() []string {
-	ret := []string{"gofmt"}
-
-	p := Go.GetExecutableInGOBIN("goimports")
-	if File.IsExist(p) {
-		ret = append(ret, "goimports")
-	}
-
-	sort.Strings(ret)
-
-	return ret
-}
-
-// GetExecutableInGOBIN gets executable file under GOBIN path.
-//
-// The specified executable should not with extension, this function will append .exe if on Windows.
-func (*mygo) GetExecutableInGOBIN(executable string) string {
-	if OS.IsWindows() {
-		executable += ".exe"
-	}
-
-	gopaths := filepath.SplitList(os.Getenv("GOPATH"))
-
-	for _, gopath := range gopaths {
-		// $GOPATH/bin/$GOOS_$GOARCH/executable
-		ret := gopath + pathSeparator + "bin" + pathSeparator +
-			os.Getenv("GOOS") + "_" + os.Getenv("GOARCH") + pathSeparator + executable
-		if File.IsExist(ret) {
-			return ret
-		}
-
-		// $GOPATH/bin/{runtime.GOOS}_{runtime.GOARCH}/executable
-		ret = gopath + pathSeparator + "bin" + pathSeparator +
-			runtime.GOOS + "_" + runtime.GOARCH + pathSeparator + executable
-		if File.IsExist(ret) {
-			return ret
-		}
-
-		// $GOPATH/bin/executable
-		ret = gopath + pathSeparator + "bin" + pathSeparator + executable
-		if File.IsExist(ret) {
-			return ret
-		}
-	}
-
-	// $GOBIN/executable
-	gobin := os.Getenv("GOBIN")
-	if "" != gobin {
-		ret := gobin + pathSeparator + executable
-		if File.IsExist(ret) {
-			return ret
-		}
-	}
-
-	return "./" + executable
-}

util/go_test.go

@@ -1,101 +0,0 @@
-// 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 util
-
-import (
-	"runtime"
-	"strings"
-	"testing"
-
-	"github.com/hashicorp/go-version"
-)
-
-func TestGetCrossPlatforms(t *testing.T) {
-	crossPlatforms := Go.GetCrossPlatforms()
-
-	if len(crossPlatforms) < 1 {
-		t.Error("should have one platform at least")
-	}
-}
-
-func TestGetAPIPath(t *testing.T) {
-	apiPath := Go.GetAPIPath()
-
-	v := runtime.Version()[2:]
-
-	ver, err := version.NewVersion(v)
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	constraints, err := version.NewConstraint(">= 1.4")
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	if constraints.Check(ver) {
-		if !strings.HasSuffix(apiPath, "src") {
-			t.Error("api path should end with \"src\"")
-
-			return
-		}
-	} else {
-		if !strings.HasSuffix(apiPath, "pkg") {
-			t.Error("api path should end with \"pkg\"")
-		}
-	}
-}
-
-func TestIsAPI(t *testing.T) {
-	apiPath := Go.GetAPIPath()
-
-	if !Go.IsAPI(apiPath) {
-		t.Error("api path root should belong to api path")
-
-		return
-	}
-
-	root := "/root"
-
-	if Go.IsAPI(root) {
-		t.Error("root should not belong to api path")
-
-		return
-	}
-}
-
-func TestGetGoFormats(t *testing.T) {
-	formats := Go.GetGoFormats()
-
-	if len(formats) < 1 {
-		t.Error("should have one go format tool [gofmt] at least")
-	}
-}
-
-func TestGetExecutableInGOBIN(t *testing.T) {
-	bin := Go.GetExecutableInGOBIN("test")
-
-	if OS.IsWindows() {
-		if !strings.HasSuffix(bin, ".exe") {
-			t.Error("Executable binary should end with .exe")
-
-			return
-		}
-	}
-}

util/net.go

@@ -1,45 +0,0 @@
-// 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 util includes common utilities.
-package util
-
-import (
-	"errors"
-	"net"
-)
-
-type mynet struct{}
-
-// Network utilities.
-var Net = mynet{}
-
-// LocalIP gets the first NIC's IP address.
-func (*mynet) LocalIP() (string, error) {
-	addrs, err := net.InterfaceAddrs()
-
-	if nil != err {
-		return "", err
-	}
-
-	for _, address := range addrs {
-		if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
-			if nil != ipnet.IP.To4() {
-				return ipnet.IP.String(), nil
-			}
-		}
-	}
-
-	return "", errors.New("can't get local IP")
-}

util/net_test.go

@@ -1,27 +0,0 @@
-// 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 util
-
-import "testing"
-
-func TestLocalIP(t *testing.T) {
-	ip, err := Net.LocalIP()
-
-	if nil != err {
-		t.Error(err)
-	}
-
-	t.Log(ip)
-}

util/os.go

@@ -1,100 +0,0 @@
-// 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 util
-
-import (
-	"bytes"
-	"errors"
-	"os"
-	"os/exec"
-	"os/user"
-	"path/filepath"
-	"runtime"
-	"strings"
-)
-
-type myos struct{}
-
-// OS utilities.
-var OS = myos{}
-
-// IsWindows determines whether current OS is Windows.
-func (*myos) IsWindows() bool {
-	return "windows" == runtime.GOOS
-}
-
-// Pwd gets the path of current working directory.
-func (*myos) Pwd() string {
-	file, _ := exec.LookPath(os.Args[0])
-	pwd, _ := filepath.Abs(file)
-
-	return filepath.Dir(pwd)
-}
-
-// Home returns the home directory for the executing user.
-//
-// This uses an OS-specific method for discovering the home directory.
-// An error is returned if a home directory cannot be detected.
-func (*myos) Home() (string, error) {
-	user, err := user.Current()
-	if nil == err {
-		return user.HomeDir, nil
-	}
-
-	// cross compile support
-
-	if OS.IsWindows() {
-		return homeWindows()
-	}
-
-	// Unix-like system, so just assume Unix
-	return homeUnix()
-}
-
-func homeUnix() (string, error) {
-	// First prefer the HOME environmental variable
-	if home := os.Getenv("HOME"); home != "" {
-		return home, nil
-	}
-
-	// If that fails, try the shell
-	var stdout bytes.Buffer
-	cmd := exec.Command("sh", "-c", "eval echo ~$USER")
-	cmd.Stdout = &stdout
-	if err := cmd.Run(); err != nil {
-		return "", err
-	}
-
-	result := strings.TrimSpace(stdout.String())
-	if result == "" {
-		return "", errors.New("blank output when reading home directory")
-	}
-
-	return result, nil
-}
-
-func homeWindows() (string, error) {
-	drive := os.Getenv("HOMEDRIVE")
-	path := os.Getenv("HOMEPATH")
-	home := drive + path
-	if drive == "" || path == "" {
-		home = os.Getenv("USERPROFILE")
-	}
-	if home == "" {
-		return "", errors.New("HOMEDRIVE, HOMEPATH, and USERPROFILE are blank")
-	}
-
-	return home, nil
-}

util/os_test.go

@@ -1,49 +0,0 @@
-// 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 util
-
-import (
-	"runtime"
-	"testing"
-)
-
-func TestIsWiindows(t *testing.T) {
-	goos := runtime.GOOS
-
-	if "windows" == goos && !OS.IsWindows() {
-		t.Error("runtime.GOOS returns [windows]")
-
-		return
-	}
-}
-
-func TestPwd(t *testing.T) {
-	if "" == OS.Pwd() {
-		t.Error("Working directory should not be empty")
-
-		return
-	}
-}
-
-func TestHome(t *testing.T) {
-	home, err := OS.Home()
-	if nil != err {
-		t.Error("Can not get user home")
-		
-		return
-	}
-	
-	t.Log(home)
-}

util/panic.go

@@ -1,104 +0,0 @@
-// 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 util
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"runtime"
-
-	"github.com/b3log/wide/log"
-)
-
-// Logger.
-var logger = log.NewLogger(os.Stdout)
-
-var (
-	dunno     = []byte("???")
-	centerDot = []byte("·")
-	dot       = []byte(".")
-	slash     = []byte("/")
-)
-
-// Recover recovers a panic.
-func Recover() {
-	if re := recover(); nil != re {
-		stack := stack()
-		logger.Errorf("PANIC RECOVERED: %v\n\t%s\n", re, stack)
-	}
-}
-
-// stack implements Stack, skipping 2 frames.
-func stack() []byte {
-	buf := &bytes.Buffer{} // the returned data
-	// As we loop, we open files and read them. These variables record the currently
-	// loaded file.
-	var lines [][]byte
-	var lastFile string
-	for i := 2; ; i++ { // Caller we care about is the user, 2 frames up
-		pc, file, line, ok := runtime.Caller(i)
-		if !ok {
-			break
-		}
-		// Print this much at least.  If we can't find the source, it won't show.
-		fmt.Fprintf(buf, "%s:%d (0x%x)\n", file, line, pc)
-		if file != lastFile {
-			data, err := ioutil.ReadFile(file)
-			if err != nil {
-				continue
-			}
-			lines = bytes.Split(data, []byte{'\n'})
-			lastFile = file
-		}
-		line-- // in stack trace, lines are 1-indexed but our array is 0-indexed
-		fmt.Fprintf(buf, "\t%s: %s\n", function(pc), source(lines, line))
-	}
-	return buf.Bytes()
-}
-
-// source returns a space-trimmed slice of the n'th line.
-func source(lines [][]byte, n int) []byte {
-	if n < 0 || n >= len(lines) {
-		return dunno
-	}
-	return bytes.Trim(lines[n], " \t")
-}
-
-// function returns, if possible, the name of the function containing the PC.
-func function(pc uintptr) []byte {
-	fn := runtime.FuncForPC(pc)
-	if fn == nil {
-		return dunno
-	}
-	name := []byte(fn.Name())
-	// The name includes the path name to the package, which is unnecessary
-	// since the file name is already included.  Plus, it has center dots.
-	// That is, we see
-	//	runtime/debug.*T·ptrmethod
-	// and want
-	//	*T.ptrmethod
-	// Since the package path might contains dots (e.g. code.google.com/...),
-	// we first remove the path prefix if there is one.
-	if lastslash := bytes.LastIndex(name, slash); lastslash >= 0 {
-		name = name[lastslash+1:]
-	}
-	if period := bytes.Index(name, dot); period >= 0 {
-		name = name[period+1:]
-	}
-	name = bytes.Replace(name, centerDot, dot, -1)
-	return name
-}

util/panic_test.go

@@ -1,23 +0,0 @@
-// 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 util
-
-import "testing"
-
-func TestRecover(t *testing.T) {
-	defer Recover()
-
-	panic("test panic")
-}

util/rand.go

@@ -1,47 +0,0 @@
-// 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 util
-
-import (
-	"math/rand"
-	"time"
-)
-
-type myrand struct{}
-
-// Random utilities.
-var Rand = myrand{}
-
-// String returns a random string ['a', 'z'] in the specified length
-func (*myrand) String(length int) string {
-	bytes := make([]byte, length)
-
-	for i := 0; i < length; i++ {
-		bytes[i] = byte(Rand.Int('a', 'z'))
-
-		time.Sleep(100 * time.Nanosecond)
-	}
-
-	return string(bytes)
-}
-
-// Int returns a random integer in range [min, max].
-func (*myrand) Int(min int, max int) int {
-	rand.Seed(time.Now().UnixNano())
-
-	time.Sleep(100 * time.Nanosecond)
-
-	return min + rand.Intn(max-min)
-}

util/rand_test.go

@@ -1,35 +0,0 @@
-// 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 util
-
-import "testing"
-
-func TestString(t *testing.T) {
-	r1 := Rand.String(16)
-	r2 := Rand.String(16)
-
-	if r1 == r2 {
-		t.Fail()
-	}
-}
-
-func TestInt(t *testing.T) {
-	r1 := Rand.Int(0, 65535)
-	r2 := Rand.Int(0, 65535)
-
-	if r1 == r2 {
-		t.Fail()
-	}
-}

util/ret.go

@@ -1,115 +0,0 @@
-// 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 util
-
-import (
-	"compress/gzip"
-	"encoding/json"
-	"net/http"
-	"os"
-
-	"github.com/b3log/wide/log"
-)
-
-// Logger.
-var retLogger = log.NewLogger(os.Stdout)
-
-// Result.
-type Result struct {
-	Succ bool        `json:"succ"` // successful or not
-	Code int      `json:"code"` // return code
-	Msg  string      `json:"msg"`  // message
-	Data interface{} `json:"data"` // data object
-}
-
-// NewResult creates a result with Succ=true, Code=0, Msg="", Data=nil.
-func NewResult() *Result {
-	return &Result{
-		Succ: true,
-		Code: 0,
-		Msg:  "",
-		Data: nil,
-	}
-}
-
-// RetResult writes HTTP response with "Content-Type, application/json".
-func RetResult(w http.ResponseWriter, r *http.Request, res *Result) {
-	w.Header().Set("Content-Type", "application/json")
-
-	data, err := json.Marshal(res)
-	if err != nil {
-		retLogger.Error(err)
-
-		return
-	}
-
-	w.Write(data)
-}
-
-// RetGzResult writes HTTP response with "Content-Type, application/json" and "Content-Encoding, gzip".
-func RetGzResult(w http.ResponseWriter, r *http.Request, res *Result) {
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Content-Encoding", "gzip")
-
-	gz := gzip.NewWriter(w)
-	err := json.NewEncoder(gz).Encode(res)
-	if nil != err {
-		retLogger.Error(err)
-
-		return
-	}
-
-	err = gz.Close()
-	if nil != err {
-		retLogger.Error(err)
-
-		return
-	}
-}
-
-// RetJSON writes HTTP response with "Content-Type, application/json".
-func RetJSON(w http.ResponseWriter, r *http.Request, res map[string]interface{}) {
-	w.Header().Set("Content-Type", "application/json")
-
-	data, err := json.Marshal(res)
-	if err != nil {
-		retLogger.Error(err)
-
-		return
-	}
-
-	w.Write(data)
-}
-
-// RetGzJSON writes HTTP response with "Content-Type, application/json" and "Content-Encoding, gzip".
-func RetGzJSON(w http.ResponseWriter, r *http.Request, res map[string]interface{}) {
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Content-Encoding", "gzip")
-
-	gz := gzip.NewWriter(w)
-	err := json.NewEncoder(gz).Encode(res)
-	if nil != err {
-		retLogger.Error(err)
-
-		return
-	}
-
-	err = gz.Close()
-	if nil != err {
-		retLogger.Error(err)
-
-		return
-	}
-}

util/string.go

@@ -1,61 +0,0 @@
-// 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 util
-
-type str struct{}
-
-// String utilities.
-var Str = str{}
-
-// Contains determines whether the str is in the strs.
-func (*str) Contains(str string, strs []string) bool {
-	for _, v := range strs {
-		if v == str {
-			return true
-		}
-	}
-
-	return false
-}
-
-// LCS gets the longest common substring of s1 and s2.
-//
-// Refers to http://en.wikibooks.org/wiki/Algorithm_Implementation/Strings/Longest_common_substring.
-func (*str) LCS(s1 string, s2 string) string {
-	var m = make([][]int, 1+len(s1))
-
-	for i := 0; i < len(m); i++ {
-		m[i] = make([]int, 1+len(s2))
-	}
-
-	longest := 0
-	xLongest := 0
-
-	for x := 1; x < 1+len(s1); x++ {
-		for y := 1; y < 1+len(s2); y++ {
-			if s1[x-1] == s2[y-1] {
-				m[x][y] = m[x-1][y-1] + 1
-				if m[x][y] > longest {
-					longest = m[x][y]
-					xLongest = x
-				}
-			} else {
-				m[x][y] = 0
-			}
-		}
-	}
-
-	return s1[xLongest-longest : xLongest]
-}

util/string_test.go

@@ -1,35 +0,0 @@
-// 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 util
-
-import "testing"
-
-func TestContains(t *testing.T) {
-	if !Str.Contains("123", []string{"123", "345"}) {
-		t.Error("[\"123\", \"345\"] should contain \"123\"")
-
-		return
-	}
-}
-
-func TestLCS(t *testing.T) {
-	str := Str.LCS("123456", "abc34def")
-
-	if "34" != str {
-		t.Error("[\"123456\"] and [\"abc34def\"] should have the longest common substring [\"34\"]")
-
-		return
-	}
-}

util/zip.go

@@ -1,230 +0,0 @@
-// 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 util
-
-import (
-	"archive/zip"
-	"bytes"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"unicode/utf8"
-
-	"golang.org/x/text/encoding/simplifiedchinese"
-	"golang.org/x/text/transform"
-)
-
-type myzip struct{}
-
-// Zip utilities.
-var Zip = myzip{}
-
-// ZipFile represents a zip file.
-type ZipFile struct {
-	zipFile *os.File
-	writer  *zip.Writer
-}
-
-// Create creates a zip file with the specified filename.
-func (*myzip) Create(filename string) (*ZipFile, error) {
-	file, err := os.Create(filename)
-	if nil != err {
-		return nil, err
-	}
-
-	return &ZipFile{zipFile: file, writer: zip.NewWriter(file)}, nil
-}
-
-// Close closes the zip file writer.
-func (z *ZipFile) Close() error {
-	err := z.writer.Close()
-	if nil != err {
-		return err
-	}
-
-	return z.zipFile.Close() // close the underlying writer
-}
-
-// AddEntryN adds entries.
-func (z *ZipFile) AddEntryN(path string, names ...string) error {
-	for _, name := range names {
-		zipPath := filepath.Join(path, name)
-		err := z.AddEntry(zipPath, name)
-		if nil != err {
-			return err
-		}
-	}
-	return nil
-}
-
-// AddEntry adds a entry.
-func (z *ZipFile) AddEntry(path, name string) error {
-	fi, err := os.Stat(name)
-	if nil != err {
-		return err
-	}
-
-	fh, err := zip.FileInfoHeader(fi)
-	if nil != err {
-		return err
-	}
-
-	fh.Name = filepath.ToSlash(filepath.Clean(path))
-	fh.Method = zip.Deflate // data compression algorithm
-
-	if fi.IsDir() {
-		fh.Name = fh.Name + "/" // be care the ending separator
-	}
-
-	entry, err := z.writer.CreateHeader(fh)
-	if nil != err {
-		return err
-	}
-
-	if fi.IsDir() {
-		return nil
-	}
-
-	file, err := os.Open(name)
-	if nil != err {
-		return err
-	}
-	defer file.Close()
-
-	_, err = io.Copy(entry, file)
-
-	return err
-}
-
-// AddDirectoryN adds directories.
-func (z *ZipFile) AddDirectoryN(path string, names ...string) error {
-	for _, name := range names {
-		err := z.AddDirectory(path, name)
-		if nil != err {
-			return err
-		}
-	}
-	return nil
-}
-
-// AddDirectory adds a directory.
-func (z *ZipFile) AddDirectory(path, dirName string) error {
-	files, err := ioutil.ReadDir(dirName)
-	if nil != err {
-		return err
-	}
-
-	if 0 == len(files) {
-		err := z.AddEntry(path, dirName)
-		if nil != err {
-			return err
-		}
-
-		return nil
-	}
-
-	for _, file := range files {
-		localPath := filepath.Join(dirName, file.Name())
-		zipPath := filepath.Join(path, file.Name())
-
-		err = nil
-		if file.IsDir() {
-			err = z.AddDirectory(zipPath, localPath)
-		} else {
-			err = z.AddEntry(zipPath, localPath)
-		}
-
-		if nil != err {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func cloneZipItem(f *zip.File, dest string) error {
-	// create full directory path
-	fileName := f.Name
-
-	if !utf8.ValidString(fileName) {
-		data, err := ioutil.ReadAll(transform.NewReader(bytes.NewReader([]byte(fileName)), simplifiedchinese.GB18030.NewDecoder()))
-		if nil == err {
-			fileName = string(data)
-		} else {
-			logger.Error(err)
-		}
-	}
-
-	path := filepath.Join(dest, fileName)
-
-	err := os.MkdirAll(filepath.Dir(path), os.ModeDir|os.ModePerm)
-	if nil != err {
-		return err
-	}
-
-	if f.FileInfo().IsDir() {
-		err = os.Mkdir(path, os.ModeDir|os.ModePerm)
-		if nil != err {
-			return err
-		}
-
-		return nil
-	}
-
-	// clone if item is a file
-
-	rc, err := f.Open()
-	if nil != err {
-		return err
-	}
-
-	defer rc.Close()
-
-	// use os.Create() since Zip don't store file permissions
-	fileCopy, err := os.Create(path)
-	if nil != err {
-		return err
-	}
-
-	defer fileCopy.Close()
-
-	_, err = io.Copy(fileCopy, rc)
-	if nil != err {
-		return err
-	}
-
-	return nil
-}
-
-// Unzip extracts a zip file specified by the zipFilePath to the destination.
-func (*myzip) Unzip(zipFilePath, destination string) error {
-	r, err := zip.OpenReader(zipFilePath)
-
-	if nil != err {
-		return err
-	}
-
-	defer r.Close()
-
-	for _, f := range r.File {
-		err = cloneZipItem(f, destination)
-		if nil != err {
-			return err
-		}
-	}
-
-	return nil
-}

util/zip_test.go

@@ -1,149 +0,0 @@
-// 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 util
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-)
-
-var testDir = "../tmp"
-var packageName = filepath.Join(testDir, "test_zip")
-
-func TestCreate(t *testing.T) {
-	zipFile, err := Zip.Create(packageName + ".zip")
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	zipFile.AddDirectoryN(".", ".")
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	err = zipFile.Close()
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-}
-
-func TestUnzip(t *testing.T) {
-	err := Zip.Unzip(packageName+".zip", packageName)
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-}
-
-func _TestEmptyDir(t *testing.T) {
-	dir1 := "/dir/subDir1"
-	dir2 := "/dir/subDir2"
-
-	err := os.MkdirAll(packageName+dir1, os.ModeDir)
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	err = os.MkdirAll(packageName+dir2, os.ModeDir)
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	f, err := os.Create(packageName + dir2 + "/file")
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-	f.Close()
-
-	zipFile, err := Zip.Create(packageName + "/dir.zip")
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	zipFile.AddDirectoryN("dir", packageName+"/dir")
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	err = zipFile.Close()
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	err = Zip.Unzip(packageName+"/dir.zip", packageName+"/unzipDir")
-	if nil != err {
-		t.Error(err)
-
-		return
-	}
-
-	if !File.IsExist(packageName+"/unzipDir") || !File.IsDir(packageName+"/unzipDir") {
-		t.Error("Unzip failed")
-
-		return
-	}
-
-	if !File.IsExist(packageName+"/unzipDir"+dir1) || !File.IsDir(packageName+"/unzipDir"+dir1) {
-		t.Error("Unzip failed")
-
-		return
-	}
-
-	if !File.IsExist(packageName+"/unzipDir"+dir2) || !File.IsDir(packageName+"/unzipDir"+dir2) {
-		t.Error("Unzip failed")
-
-		return
-	}
-
-	if !File.IsExist(packageName+"/unzipDir"+dir2+"/file") || File.IsDir(packageName+"/unzipDir"+dir2+"/file") {
-		t.Error("Unzip failed")
-
-		return
-	}
-}
-
-func TestMain(m *testing.M) {
-	logger.Info(testDir)
-
-	retCode := m.Run()
-
-	// clean test data
-	os.RemoveAll(testDir + "/test_zip")
-	os.RemoveAll(testDir + "/util")
-	os.RemoveAll(testDir + "/file.go")
-	os.RemoveAll(testDir + "/test_zip.zip")
-
-	os.Exit(retCode)
-}