src/org/sonews/daemon/command/ListGroupCommand.java
author cli
Mon, 30 Aug 2010 00:20:06 +0200
changeset 39 73b21e9f3958
parent 37 74139325d305
child 48 b78e77619152
permissions -rw-r--r--
Some work on XDAEMON command.
     1 /*
     2  *   SONEWS News Server
     3  *   see AUTHORS for the list of contributors
     4  *
     5  *   This program is free software: you can redistribute it and/or modify
     6  *   it under the terms of the GNU General Public License as published by
     7  *   the Free Software Foundation, either version 3 of the License, or
     8  *   (at your option) any later version.
     9  *
    10  *   This program is distributed in the hope that it will be useful,
    11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  *   GNU General Public License for more details.
    14  *
    15  *   You should have received a copy of the GNU General Public License
    16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17  */
    18 
    19 package org.sonews.daemon.command;
    20 
    21 import java.io.IOException;
    22 import java.util.List;
    23 import org.sonews.daemon.NNTPConnection;
    24 import org.sonews.storage.Channel;
    25 import org.sonews.storage.StorageBackendException;
    26 
    27 /**
    28  * Class handling the LISTGROUP command.
    29  * @author Christian Lins
    30  * @author Dennis Schwerdel
    31  * @since n3tpd/0.1
    32  */
    33 public class ListGroupCommand implements Command
    34 {
    35 
    36 	@Override
    37 	public String[] getSupportedCommandStrings()
    38 	{
    39 		return new String[] {"LISTGROUP"};
    40 	}
    41 
    42 	@Override
    43 	public boolean hasFinished()
    44 	{
    45 		return true;
    46 	}
    47 
    48 	@Override
    49 	public String impliedCapability()
    50 	{
    51 		return null;
    52 	}
    53 
    54 	@Override
    55 	public boolean isStateful()
    56 	{
    57 		return false;
    58 	}
    59 
    60 	@Override
    61 	public void processLine(NNTPConnection conn, final String commandName, byte[] raw)
    62 		throws IOException, StorageBackendException
    63 	{
    64 		final String[] command = commandName.split(" ");
    65 
    66 		Channel group;
    67 		if (command.length >= 2) {
    68 			group = Channel.getByName(command[1]);
    69 		} else {
    70 			group = conn.getCurrentChannel();
    71 		}
    72 
    73 		if (group == null) {
    74 			conn.println("412 no group selected; use GROUP <group> command");
    75 			return;
    76 		}
    77 
    78 		List<Long> ids = group.getArticleNumbers();
    79 		conn.println("211 " + ids.size() + " "
    80 			+ group.getFirstArticleNumber() + " "
    81 			+ group.getLastArticleNumber() + " list of article numbers follow");
    82 		for (long id : ids) {
    83 			// One index number per line
    84 			conn.println(Long.toString(id));
    85 		}
    86 		conn.println(".");
    87 	}
    88 }