c-api/src/main/java/com/mini/capi/utils/vF.java

package com.mini.capi.utils;

import java.math.BigDecimal;
import java.math.RoundingMode;

public class vF {


    private static final String[] UNITS = {"B", "K", "M", "G", "T", "P"};
    private static final BigDecimal KB = BigDecimal.valueOf(1024L);

    public static String format(long bytes) {
        if (bytes < 0) {
            throw new IllegalArgumentException("字节数不能为负数");
        }

        BigDecimal size = BigDecimal.valueOf(bytes);
        int unitIndex = 0;

        while (size.compareTo(KB) >= 0 && unitIndex < UNITS.length - 1) {
            size = size.divide(KB, 2, RoundingMode.HALF_UP);
            unitIndex++;
        }

        String num = size.stripTrailingZeros().toPlainString();
        return num + UNITS[unitIndex];
    }


}