src/org/sonews/daemon/command/ListGroupCommand.java
author František Kučera <franta-hg@frantovo.cz>
Mon, 17 Oct 2011 19:50:23 +0200
changeset 91 70286a6cf338
parent 48 b78e77619152
permissions -rwxr-xr-x
Drupal: text/plain – podpora obrázků a dalších vnořených elementů uvnitř odkazů.
     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 package org.sonews.daemon.command;
    19 
    20 import java.io.IOException;
    21 import java.util.List;
    22 import org.sonews.daemon.NNTPConnection;
    23 import org.sonews.storage.Group;
    24 import org.sonews.storage.StorageBackendException;
    25 import org.sonews.storage.StorageManager;
    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 	@Override
    36 	public String[] getSupportedCommandStrings() {
    37 		return new String[]{"LISTGROUP"};
    38 	}
    39 
    40 	@Override
    41 	public boolean hasFinished() {
    42 		return true;
    43 	}
    44 
    45 	@Override
    46 	public String impliedCapability() {
    47 		return null;
    48 	}
    49 
    50 	@Override
    51 	public boolean isStateful() {
    52 		return false;
    53 	}
    54 
    55 	@Override
    56 	public void processLine(NNTPConnection conn, final String commandName, byte[] raw)
    57 			throws IOException, StorageBackendException {
    58 		final String[] command = commandName.split(" ");
    59 
    60 		Group group;
    61 		if (command.length >= 2) {
    62 			group = StorageManager.current().getGroup(command[1]);
    63 		} else {
    64 			group = conn.getCurrentChannel();
    65 		}
    66 
    67 		if (group == null) {
    68 			conn.println("412 no group selected; use GROUP <group> command");
    69 			return;
    70 		}
    71 
    72 		List<Long> ids = group.getArticleNumbers();
    73 		conn.println("211 " + ids.size() + " "
    74 				+ group.getFirstArticleNumber() + " "
    75 				+ group.getLastArticleNumber() + " list of article numbers follow");
    76 		for (long id : ids) {
    77 			// One index number per line
    78 			conn.println(Long.toString(id));
    79 		}
    80 		conn.println(".");
    81 	}
    82 }