- LimitUTF8StringLen

utils/utils.go

@@ -246,3 +246,24 @@ func Base64DecodeMultiString(strs ...string) (decodedData [][]byte, err error) {
 	}
 	return decodedData, nil
 }
+
+func LimitStringLen(str string, maxLen int) (limitedStr string) {
+	if maxLen > 0 {
+		if strLen := len(str); strLen > maxLen {
+			str = str[:maxLen]
+		}
+	}
+	return str
+}
+
+func LimitUTF8StringLen(str string, maxLen int) (limitedStr string) {
+	if maxLen > 0 {
+		if len(str) > maxLen {
+			runeList := []rune(str)
+			if len(runeList) > maxLen {
+				str = string(runeList[:maxLen])
+			}
+		}
+	}
+	return str
+}