org/sonews/daemon/command/ListGroupCommand.java
author cli
Fri Aug 21 17:40:54 2009 +0200 (2009-08-21)
changeset 19 91dc9acb03ed
parent 1 6fceb66e1ad7
child 20 6ae5e4f8329b
permissions -rw-r--r--
Fix for last commit.
     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 boolean isStateful()
    50   {
    51     return false;
    52   }
    53 
    54   @Override
    55   public void processLine(NNTPConnection conn, final String commandName, byte[] raw)
    56     throws IOException, StorageBackendException
    57   {
    58     final String[] command = commandName.split(" ");
    59 
    60     Channel group;
    61     if(command.length >= 2)
    62     {
    63       group = Channel.getByName(command[1]);
    64     }
    65     else
    66     {
    67       group = conn.getCurrentChannel();
    68     }
    69 
    70     if (group == null)
    71     {
    72       conn.println("412 no group selected; use GROUP <group> command");
    73       return;
    74     }
    75 
    76     List<Long> ids = group.getArticleNumbers();
    77     conn.println("211 " + ids.size() + " " +
    78       group.getFirstArticleNumber() + " " + 
    79       group.getLastArticleNumber() + " list of article numbers follow");
    80     for(long id : ids)
    81     {
    82       // One index number per line
    83       conn.println(Long.toString(id));
    84     }
    85     conn.println(".");
    86   }
    87 
    88 }