/**
* Creates a <code>IpRange</code> instance by a string.
*
* @param range a string such as "1.1.1.1-1.1.2.255".
* @return IP range.
*/
public static IPRange parseFromString(String range) {
String[] ips = range.split("-");
Preconditions.checkArgument(
ips.length == 2,
"IP range string must be fomarted as [minIP-maxIP],error argument:" + range);
return new IPRange(IP.parseFromString(ips[0]), IP.parseFromString(ips[1]));
}
/**
* Creates a {@link IPRange} instance by IP with mask.
*
* @param ipWithMask IP/mask, such as 192.168.70.1/24
* @return {@link IPRange} instance
*/
public static IPRange parseFromIPWithMask(String ipWithMask) {
long minIpAsLong = 0;
long maxIpAsLong = 0;
String[] strs = ipWithMask.split("/");
if (strs.length == 2) {
IP ip = IP.parseFromString(strs[0]);
int mask = Integer.parseInt(strs[1]);
long maskAsLong = 0xffffffff << (32 - mask);
minIpAsLong = ip.toLong();
maxIpAsLong = minIpAsLong | (~maskAsLong);
} else {
throw new IllegalArgumentException(
"The input String format error. for example" + " 192.168.1.1/24");
}
return new IPRange(new IP(minIpAsLong), new IP(maxIpAsLong));
}
