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/*
* $Id: GroupIterator.java,v 1.4 2004/07/28 09:37:21 dog Exp $
* Copyright (C) 2002 The Free Software Foundation
*
* This file is part of GNU inetlib, a library.
*
* GNU inetlib is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNU inetlib 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* As a special exception, if you link this library with other files to
* produce an executable, this library does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* This exception does not however invalidate any other reasons why the
* executable file might be covered by the GNU General Public License.
*/
package gnu.inet.nntp;
import java.io.IOException;
import java.util.NoSuchElementException;
/**
* An iterator over an NNTP newsgroup listing.
*
* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
* @version $Revision: 1.4 $ $Date: 2004/07/28 09:37:21 $
*/
public class GroupIterator extends LineIterator
{
static final String CAN_POST = "y";
GroupIterator (NNTPConnection connection)
{
super (connection);
}
/**
* Returns the next group.
*/
public Object next ()
{
try
{
return nextGroup ();
}
catch (IOException e)
{
throw new NoSuchElementException ("I/O error: " + e.getMessage ());
}
}
/**
* Returns the next group.
*/
public Group nextGroup () throws IOException
{
String line = nextLine ();
// Parse line
int start = 0, end;
end = line.indexOf (' ', start);
String name = line.substring (start, end);
start = end + 1;
end = line.indexOf (' ', start);
int last = Integer.parseInt (line.substring (start, end));
start = end + 1;
end = line.indexOf (' ', start);
int first = Integer.parseInt (line.substring (start, end));
start = end + 1;
boolean canPost = CAN_POST.equals (line.substring (start));
return new Group (name, last, first, canPost);
}
}
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