refactor: append, build variable and type switch (#4940)

* refactor: append, build variable and type switch

* fix: remove redundant space.

modules/base/tool.go

@@ -465,41 +465,41 @@ func Subtract(left interface{}, right interface{}) interface{} {
 	var rleft, rright int64
 	var fleft, fright float64
 	var isInt = true
-	switch left := left.(type) {
+	switch v := left.(type) {
 	case int:
-		rleft = int64(left)
+		rleft = int64(v)
 	case int8:
-		rleft = int64(left)
+		rleft = int64(v)
 	case int16:
-		rleft = int64(left)
+		rleft = int64(v)
 	case int32:
-		rleft = int64(left)
+		rleft = int64(v)
 	case int64:
-		rleft = left
+		rleft = v
 	case float32:
-		fleft = float64(left)
+		fleft = float64(v)
 		isInt = false
 	case float64:
-		fleft = left
+		fleft = v
 		isInt = false
 	}
 
-	switch right := right.(type) {
+	switch v := right.(type) {
 	case int:
-		rright = int64(right)
+		rright = int64(v)
 	case int8:
-		rright = int64(right)
+		rright = int64(v)
 	case int16:
-		rright = int64(right)
+		rright = int64(v)
 	case int32:
-		rright = int64(right)
+		rright = int64(v)
 	case int64:
-		rright = right
+		rright = v
 	case float32:
-		fright = float64(right)
+		fright = float64(v)
 		isInt = false
 	case float64:
-		fright = right
+		fright = v
 		isInt = false
 	}
 

modules/base/tool_test.go

@@ -306,21 +306,21 @@ func TestFileSize(t *testing.T) {
 
 func TestSubtract(t *testing.T) {
 	toFloat64 := func(n interface{}) float64 {
-		switch n := n.(type) {
+		switch v := n.(type) {
 		case int:
-			return float64(n)
+			return float64(v)
 		case int8:
-			return float64(n)
+			return float64(v)
 		case int16:
-			return float64(n)
+			return float64(v)
 		case int32:
-			return float64(n)
+			return float64(v)
 		case int64:
-			return float64(n)
+			return float64(v)
 		case float32:
-			return float64(n)
+			return float64(v)
 		case float64:
-			return n
+			return v
 		default:
 			return 0.0
 		}

modules/templates/helper.go

@@ -156,8 +156,7 @@ func NewFuncMap() []template.FuncMap {
 			var path []string
 			index := strings.LastIndex(str, "/")
 			if index != -1 && index != len(str) {
-				path = append(path, str[0:index+1])
-				path = append(path, str[index+1:])
+				path = append(path, str[0:index+1], str[index+1:])
 			} else {
 				path = append(path, str)
 			}
@@ -330,10 +329,10 @@ func ToUTF8(content string) string {
 	return res
 }
 
-// ReplaceLeft replaces all prefixes 'old' in 's' with 'new'.
-func ReplaceLeft(s, old, new string) string {
-	oldLen, newLen, i, n := len(old), len(new), 0, 0
-	for ; i < len(s) && strings.HasPrefix(s[i:], old); n++ {
+// ReplaceLeft replaces all prefixes 'oldS' in 's' with 'newS'.
+func ReplaceLeft(s, oldS, newS string) string {
+	oldLen, newLen, i, n := len(oldS), len(newS), 0, 0
+	for ; i < len(s) && strings.HasPrefix(s[i:], oldS); n++ {
 		i += oldLen
 	}
 
@@ -348,7 +347,7 @@ func ReplaceLeft(s, old, new string) string {
 
 	j := 0
 	for ; j < n*newLen; j += newLen {
-		copy(replacement[j:j+newLen], new)
+		copy(replacement[j:j+newLen], newS)
 	}
 
 	copy(replacement[j:], s[i:])