feat: create pkg package and remove unused code

apploader/csv-app/csv-app.go

@@ -7,16 +7,15 @@ package csvapp
 */
 import "C"
 import (
+	"apploader/pkg/conversion"
+	"apploader/pkg/file"
 	"apploader/secret_server"
-	"apploader/util/file"
-	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"log"
 	"os"
 	"os/exec"
 	"path"
-	"strconv"
 	"strings"
 	"syscall"
 	"text/template"
@@ -297,7 +296,7 @@ func CreateSevers(ca *TaskInfo) error {
 			return fmt.Errorf("user env format error")
 		}
 		for k, v := range userEnv {
-			value := Interface2string(v)
+			value := conversion.Interface2String(v)
 			envs = append(envs, fmt.Sprintf("%s=%s", k, value))
 		}
 	}
@@ -386,58 +385,3 @@ func startTask(tasks []*TaskInfo) {
 		}
 	}
 }
-
-func Interface2string(value interface{}) string {
-	var key string
-	if value == nil {
-		return key
-	}
-
-	switch value.(type) {
-	case float64:
-		ft := value.(float64)
-		key = strconv.FormatFloat(ft, 'f', -1, 64)
-	case float32:
-		ft := value.(float32)
-		key = strconv.FormatFloat(float64(ft), 'f', -1, 64)
-	case int:
-		it := value.(int)
-		key = strconv.Itoa(it)
-	case uint:
-		it := value.(uint)
-		key = strconv.Itoa(int(it))
-	case int8:
-		it := value.(int8)
-		key = strconv.Itoa(int(it))
-	case uint8:
-		it := value.(uint8)
-		key = strconv.Itoa(int(it))
-	case int16:
-		it := value.(int16)
-		key = strconv.Itoa(int(it))
-	case uint16:
-		it := value.(uint16)
-		key = strconv.Itoa(int(it))
-	case int32:
-		it := value.(int32)
-		key = strconv.Itoa(int(it))
-	case uint32:
-		it := value.(uint32)
-		key = strconv.Itoa(int(it))
-	case int64:
-		it := value.(int64)
-		key = strconv.FormatInt(it, 10)
-	case uint64:
-		it := value.(uint64)
-		key = strconv.FormatUint(it, 10)
-	case string:
-		key = value.(string)
-	case []byte:
-		key = string(value.([]byte))
-	default:
-		newValue, _ := json.Marshal(value)
-		key = string(newValue)
-	}
-
-	return key
-}

apploader/pkg/conversion/conversion.go

@@ -0,0 +1,47 @@
+package conversion
+
+import (
+	"encoding/json"
+	"strconv"
+)
+
+// Interface2String converts interface{} to string
+func Interface2String(value interface{}) string {
+	if value == nil {
+		return ""
+	}
+
+	switch v := value.(type) {
+	case float64:
+		return strconv.FormatFloat(v, 'f', -1, 64)
+	case float32:
+		return strconv.FormatFloat(float64(v), 'f', -1, 64)
+	case int:
+		return strconv.Itoa(v)
+	case uint:
+		return strconv.Itoa(int(v))
+	case int8:
+		return strconv.Itoa(int(v))
+	case uint8:
+		return strconv.Itoa(int(v))
+	case int16:
+		return strconv.Itoa(int(v))
+	case uint16:
+		return strconv.Itoa(int(v))
+	case int32:
+		return strconv.Itoa(int(v))
+	case uint32:
+		return strconv.Itoa(int(v))
+	case int64:
+		return strconv.FormatInt(v, 10)
+	case uint64:
+		return strconv.FormatUint(v, 10)
+	case string:
+		return v
+	case []byte:
+		return string(v)
+	default:
+		newValue, _ := json.Marshal(value)
+		return string(newValue)
+	}
+}

apploader/util/file/base.go → apploader/pkg/file/file.go

@@ -2,25 +2,16 @@ package file
 
 import "os"
 
+// Exists checks if a file or directory exists
 func Exists(path string) bool {
-	_, err := os.Stat(path) //os.Sta
+	_, err := os.Stat(path)
 	if err != nil {
-		if os.IsExist(err) {
-			return true
-		}
-		return false
+		return os.IsExist(err)
 	}
 	return true
 }
 
-func IsDir(path string) bool {
-	s, err := os.Stat(path)
-	if err != nil {
-		return false
-	}
-	return s.IsDir()
-}
-
+// IsFile checks if a path is a file
 func IsFile(path string) bool {
 	s, err := os.Stat(path)
 	if err != nil {