Colorful log print

new.go

@@ -40,15 +40,15 @@ func init() {
 func createApp(cmd *Command, args []string) {
 	curpath, _ := os.Getwd()
 	if len(args) != 1 {
-		fmt.Println("[ERRO] Argument [appname] is missing")
+		colorLog("[ERRO] Argument [appname] is missing\n")
 		os.Exit(2)
 	}
 
 	gopath := os.Getenv("GOPATH")
 	Debugf("gopath:%s", gopath)
 	if gopath == "" {
-		fmt.Printf("[ERRO] $GOPATH not found\n")
+		colorLog("[ERRO] $GOPATH not found\n")
-		fmt.Printf("[HINT] Set $GOPATH in your environment vairables\n")
+		colorLog("[HINT] Set $GOPATH in your environment vairables\n")
 		os.Exit(2)
 	}
 	haspath := false
@@ -66,8 +66,8 @@ func createApp(cmd *Command, args []string) {
 	}
 
 	if !haspath {
-		fmt.Printf("[ERRO] Unable to create an application outside of $GOPATH(%s)\n", gopath)
+		colorLog("[ERRO] Unable to create an application outside of $GOPATH(%s)\n", gopath)
-		fmt.Printf("[HINT] Change your work directory by `cd $GOPATH%ssrc`\n", string(path.Separator))
+		colorLog("[HINT] Change your work directory by `cd ($GOPATH%ssrc)`\n", string(path.Separator))
 		os.Exit(2)
 	}
 
@@ -110,7 +110,7 @@ func createApp(cmd *Command, args []string) {
 	fmt.Println(path.Join(apppath, "main.go"))
 	writetofile(path.Join(apppath, "main.go"), strings.Replace(maingo, "{{.Appname}}", strings.Join(strings.Split(apppath[len(appsrcpath)+1:], string(path.Separator)), string(path.Separator)), -1))
 
-	fmt.Println("[SUCC] New application successfully created!")
+	colorLog("[SUCC] New application successfully created!\n")
 }
 
 var appconf = `appname = {{.Appname}}

run.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"encoding/json"
-	"fmt"
 	"os"
 	path "path/filepath"
 	"runtime"
@@ -69,7 +68,7 @@ var conf struct {
 func runApp(cmd *Command, args []string) {
 	exit := make(chan bool)
 	if len(args) != 1 {
-		fmt.Println("[ERRO] Argument [appname] is missing")
+		colorLog("[ERRO] Argument [appname] is missing\n")
 		os.Exit(2)
 	}
 	crupath, _ := os.Getwd()
@@ -77,7 +76,7 @@ func runApp(cmd *Command, args []string) {
 
 	err := loadConfig()
 	if err != nil {
-		fmt.Println("[ERRO] Fail to parse bee.json:", err)
+		colorLog("[ERRO] Fail to parse bee.json[ %s ]", err)
 	}
 	var paths []string
 	paths = append(paths,
@@ -111,7 +110,7 @@ func loadConfig() error {
 		}
 	} else {
 		defer f.Close()
-		fmt.Println("[INFO] Detected bee.json")
+		colorLog("[INFO] Detected bee.json\n")
 		d := json.NewDecoder(f)
 		err = d.Decode(&conf)
 		if err != nil {

util.go

@@ -1,9 +1,12 @@
 package main
 
-import "fmt"
+import (
-import "os"
+	"fmt"
-import "runtime"
+	"os"
-import "path/filepath"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
 
 // Go is a basic promise implementation: it wraps calls a function in a goroutine
 // and returns a channel which will later return the function's return value.
@@ -28,3 +31,61 @@ func Debugf(format string, a ...interface{}) {
 		fmt.Fprintf(os.Stderr, fmt.Sprintf("[debug] %s:%d %s\n", file, line, format), a...)
 	}
 }
+
+const (
+	Gray = uint8(iota + 90)
+	Red
+	Green
+	Yellow
+	Blue
+	Magenta
+	//NRed      = uint8(31) // Normal
+	EndColor = "\033[0m"
+)
+
+// colorLog colors log and print to stdout.
+// Log format: [<level>] <content [path]> [ error ].
+// Level: ERRO -> red; WARN -> Magenta; SUCC -> green; others -> default.
+// Content: default; path: yellow; error -> red.
+// Errors have to surrounded by "[ " and " ]"(space).
+func colorLog(format string, a ...interface{}) {
+	log := fmt.Sprintf(format, a...)
+	if runtime.GOOS != "windows" {
+		var clog string
+
+		// Level.
+		i := strings.Index(log, "]")
+		if log[0] == '[' && i > -1 {
+			clog += "[" + getColorLevel(log[1:i]) + "]"
+		}
+
+		log = log[i+1:]
+
+		// Error.
+		log = strings.Replace(log, "[ ", fmt.Sprintf("[ \033[%dm", Red), -1)
+		log = strings.Replace(log, " ]", EndColor+" ]", -1)
+
+		// Path.
+		log = strings.Replace(log, "(", fmt.Sprintf("(\033[%dm", Yellow), -1)
+		log = strings.Replace(log, ")", EndColor+")", -1)
+
+		log = clog + log
+	}
+
+	fmt.Print(log)
+}
+
+// getColorLevel returns colored level string by given level.
+func getColorLevel(level string) string {
+	level = strings.ToUpper(level)
+	switch level {
+	case "ERRO":
+		return fmt.Sprintf("\033[%dm%s\033[0m", Red, level)
+	case "WARN":
+		return fmt.Sprintf("\033[%dm%s\033[0m", Magenta, level)
+	case "SUCC":
+		return fmt.Sprintf("\033[%dm%s\033[0m", Green, level)
+	default:
+		return level
+	}
+}

watch.go

@@ -41,14 +41,14 @@ func NewWatcher(paths []string) {
 					// if 500ms change many times, then ignore it.
 					// for liteide often gofmt code after save.
 					if t.Add(time.Millisecond * 500).After(time.Now()) {
-						fmt.Println("[SKIP]", e.String())
+						colorLog("[SKIP] %s\n", e.String())
 						isbuild = false
 					}
 				}
 				eventTime[e.Name] = time.Now()
 
 				if isbuild {
-					fmt.Println("[EVEN]", e)
+					colorLog("[EVEN] %s\n", e)
 					go Autobuild()
 				}
 			case err := <-watcher.Error:
@@ -57,7 +57,7 @@ func NewWatcher(paths []string) {
 		}
 	}()
 
-	fmt.Println("[INFO] Initializing watcher...")
+	colorLog("[INFO] Initializing watcher...\n")
 	for _, path := range paths {
 		fmt.Println(path)
 		err = watcher.Watch(path)
@@ -72,7 +72,7 @@ func Autobuild() {
 	state.Lock()
 	defer state.Unlock()
 
-	fmt.Println("[INFO] Start building...")
+	colorLog("[INFO] Start building...\n")
 	path, _ := os.Getwd()
 	os.Chdir(path)
 
@@ -94,10 +94,10 @@ func Autobuild() {
 	}
 
 	if err != nil {
-		fmt.Println("[ERRO] ============== Build failed ===================")
+		colorLog("[ERRO] ============== Build failed ===================\n")
 		return
 	}
-	fmt.Println("[SUCC] Build was successful")
+	colorLog("[SUCC] Build was successful\n")
 	Restart(appname)
 }
 
@@ -119,7 +119,7 @@ func Restart(appname string) {
 }
 
 func Start(appname string) {
-	fmt.Println("[INFO] Restarting", appname)
+	colorLog("[INFO] Restarting %s ...\n", appname)
 	if strings.Index(appname, "./") == -1 {
 		appname = "./" + appname
 	}