siutil

@SuppressLint("DefaultLocale")
public class SISize {
    private long sizeinbytes = 0L;
    private static final double BASEVAL = 1.1;

    public SISize(final long newsize) {
        setBytes(newsize);
    }

    void setBytes(final long newsize) {
        sizeinbytes = newsize;
    }

    void setKBytes(final long newsize) {
        setBytes(newsize * 1024);
    }

    private String toDecimalString(final double val) {
        return String.format("%.2f", val);
    }

    public String toString() {
        StringBuilder sizestr = new StringBuilder();

        if (sizeinbytes < BASEVAL * 1024) {
            sizestr.append(toDecimalString(sizeinbytes));
            sizestr.append("B");
        } else if (sizeinbytes < BASEVAL * 1024 * 1024) {
            sizestr.append(toDecimalString(sizeinbytes/1024.0));
            sizestr.append("KiB");
        } else { // if (sizeinbytes < BASEVAL * 1024 * 1024 * 1024) {
            sizestr.append(toDecimalString(sizeinbytes/(1024.0*1024.0)));
            sizestr.append("MiB");
        }

        return sizestr.toString();
    }
}