panda.net.Inets Maven / Gradle / Ivy
package panda.net;
import panda.lang.Numbers;
import panda.lang.Strings;
import panda.lang.time.DateTimes;
/**
*/
public class Inets {
/**
* @param size size
* @param time ms time
* @return display speed string
*/
public static String toSpeedString(long size, long time) {
double sec = (double)time / DateTimes.MS_SECOND;
if (sec <= 0) {
return toSpeedString(size * 1000);
}
return toSpeedString(size / sec);
}
/**
* @param speed speed per second
* @return speed string
*/
public static String toSpeedString(double speed) {
return Numbers.formatSize(speed) + "/s";
}
/**
* get sub domain
* @param domain domain
* @return sub domain
*/
public static String getSubdomain(String domain) {
if (Strings.isEmpty(domain)) {
return domain;
}
int i = domain.lastIndexOf('.');
if (i > 0) {
int j = domain.lastIndexOf('.', i - 1);
if (j > 0) {
return domain.substring(0, j);
}
}
return Strings.EMPTY;
}
}