package top.tangyh.lamp.filing.utils import kotlin.text.substring object RegionUtil { fun getLevel(code: String?): String { if (code == null || code.length != 6) { return "无效编码" } val province = code.substring(0, 2) val city = code.substring(2, 4) val county = code.substring(4, 6) return when { city == "00" && county == "00" -> "province" city != "00" && county == "00" -> "city" county != "00" -> "county" else -> "未知级别" } } }