formatnumber

util.go

@@ -51,43 +51,40 @@ func FormatBytes(bytes int64) string {
 	return fmt.Sprintf("%.2f%cB", float64(bytes)/float64(div), "KMGTPE"[exp])
 }
 
-func FormatInteger(num int) string {
-	if num == 0 {
-		return "0"
-	}
-
-	negative := false
+// FormatNumber 格式化整数为千分位显示，支持正负数
+func FormatNumber(num int64) string {
+	// 处理符号
+	sign := ""
 	if num < 0 {
-		negative = true
+		sign = "-"
 		num = -num
 	}
 
-	str := strconv.Itoa(num)
-	var result strings.Builder
-
+	// 转换为字符串处理
+	str := fmt.Sprintf("%d", num)
 	length := len(str)
-	remainder := length % 3
-	if remainder == 0 {
-		remainder = 3
+
+	// 小于等于3位直接返回
+	if length <= 3 {
+		return sign + str
 	}
 
-	for i, char := range str {
-		if i == 0 {
-			result.WriteRune(char)
-			if remainder == 1 && length > 1 {
-				result.WriteString(",")
-			}
-			continue
-		}
-		if (i-remainder+1)%3 == 0 {
-			result.WriteString(",")
-		}
-		result.WriteRune(char)
+	// 计算第一个逗号位置
+	firstComma := length % 3
+	if firstComma == 0 {
+		firstComma = 3
 	}
-	if negative {
-		return "-" + result.String()
+
+	// 构建格式化字符串
+	var builder strings.Builder
+	builder.WriteString(str[:firstComma])
+
+	for i := firstComma; i < length; i += 3 {
+		builder.WriteString(",")
+		builder.WriteString(str[i : i+3])
 	}
-	return result.String()
+
+	return sign + builder.String()
 }
 
 func If[T any](condition bool, trueVal, falseVal T) T {