org/sonews/daemon/command/ListCommand.java
author chris <chris@marvin>
Wed, 01 Jul 2009 10:48:22 +0200
changeset 2 1090e2141798
parent 1 6fceb66e1ad7
child 3 2fdc9cc89502
permissions -rw-r--r--
sonews/0.5.1 fixes merged
     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.sql.SQLException;
    23 import java.util.List;
    24 import org.sonews.daemon.NNTPConnection;
    25 import org.sonews.daemon.storage.Group;
    26 
    27 /**
    28  * Class handling the LIST command.
    29  * @author Christian Lins
    30  * @author Dennis Schwerdel
    31  * @since n3tpd/0.1
    32  */
    33 public class ListCommand extends AbstractCommand
    34 {
    35 
    36   public ListCommand(final NNTPConnection conn)
    37   {
    38     super(conn);
    39   }
    40 
    41   @Override
    42   public boolean hasFinished()
    43   {
    44     return true;
    45   }
    46   
    47   @Override
    48   public void processLine(final String line)
    49     throws IOException, SQLException
    50   {
    51     final String[] command = line.split(" ");
    52     
    53     if (command.length >= 2)
    54     {
    55       if (command[1].equalsIgnoreCase("OVERVIEW.FMT"))
    56       {
    57         printStatus(215, "information follows");
    58         println("Subject:\nFrom:\nDate:\nMessage-ID:\nReferences:\nBytes:\nLines:\nXref");
    59         println(".");
    60       }
    61       else if (command[1].equalsIgnoreCase("NEWSGROUPS"))
    62       {
    63         printStatus(215, "information follows");
    64         final List<Group> list = Group.getAll();
    65         for (Group g : list)
    66         {
    67           println(g.getName() + "\t" + "-");
    68         }
    69         println(".");
    70       }
    71       else if (command[1].equalsIgnoreCase("SUBSCRIPTIONS"))
    72       {
    73         printStatus(215, "information follows");
    74         println(".");
    75       }
    76       else if (command[1].equalsIgnoreCase("EXTENSIONS"))
    77       {
    78         printStatus(202, "Supported NNTP extensions.");
    79         println("LISTGROUP");
    80         println(".");
    81  
    82       }
    83       else
    84       {
    85         printStatus(500, "unknown argument to LIST command");
    86       }
    87     }
    88     else
    89     {
    90       final List<Group> groups = Group.getAll();
    91       if(groups != null)
    92       {
    93         printStatus(215, "list of newsgroups follows");
    94         for (Group g : groups)
    95         {
    96           // Indeed first the higher article number then the lower
    97           println(g.getName() + " " + g.getLastArticleNumber() + " "
    98               + g.getFirstArticleNumber() + " y");
    99         }
   100         println(".");
   101       }
   102       else
   103       {
   104         printStatus(500, "server database malfunction");
   105       }
   106     }
   107   }
   108 
   109 }