/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.shell.syntax;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.jnode.shell.CommandLine.Token;
/**
* This class implements hostname/ip address valued command line arguments. At the moment, it performs
* no special syntax checking and does no completion.
*
* @author crawley@jnode.org
*/
public class HostNameArgument extends Argument<String> {
// We won't make the Argument type parameter InetAddress because that would
// require us to resolve DNS addresses while we are parsing / completing.
public HostNameArgument(String label, int flags, String description) {
super(label, flags, new String[0], description);
}
public HostNameArgument(String label, int flags) {
this(label, flags, null);
}
public HostNameArgument(String label) {
this(label, 0, null);
}
@Override
protected String doAccept(Token token, int flags) throws CommandSyntaxException {
return token.text;
}
@Override
protected String argumentKind() {
return "host name/ip address";
}
/**
* Resolve the hostname / IP address string to a network address.
* @return the network address.
* @throws UnknownHostException if the hostname does not resolve to an address
*/
public InetAddress getAsInetAddress() throws UnknownHostException {
return InetAddress.getByName(getValue());
}
/**
* Resolve the ith hostname / IP address string to a network address.
* @param i the index of the hostname we want the address
* @return the network address.
* @throws UnknownHostException if the hostname does not resolve to an address
*/
public InetAddress getAsInetAddress(int i) throws UnknownHostException {
return InetAddress.getByName(getValues()[i]);
}
}