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package uk.ac.cam.cl.xeno.domctl;
import java.net.*;
public class InetAddressPattern
{
InetAddress base;
boolean addDom;
static InetAddressPattern parse (String t)
{
InetAddressPattern result = new InetAddressPattern ();
char[] ca = t.toCharArray ();
int idx = 0;
int len = ca.length;
try {
if (len == 0) {
result.base = null;
result.addDom = false;
} else if (ca[len - 1] == '+') {
result.base = InetAddress.getByName(t.substring(0, len - 1));
result.addDom = true;
} else {
result.base = InetAddress.getByName(t);
result.addDom = false;
}
} catch (UnknownHostException uhe) {
result.base = null;
result.addDom = false;
}
return result;
}
public String resolve (int domain_id) {
byte b[] = base.getAddress ();
if (addDom) {
if (((int)b[3]) + domain_id > 255) {
if (((int)b[2]) + domain_id > 255) {
if (((int)b[1]) + domain_id > 255) {
b[0] ++;
}
b[1] ++;
}
b[2] ++;
}
b[3] += domain_id;
}
return "" +
(b[0] + (b[0] < 0 ? 256 : 0)) + "." +
(b[1] + (b[1] < 0 ? 256 : 0)) + "." +
(b[2] + (b[2] < 0 ? 256 : 0)) + "." +
(b[3] + (b[3] < 0 ? 256 : 0));
}
public String toString () {
return "[" + base + (addDom ? "+dom_id" : "") + "]";
}
}
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