org/sonews/daemon/command/ListGroupCommand.java
author cli
Sun, 29 Aug 2010 17:04:25 +0200
changeset 34 9f0b95aafaa3
parent 20 6ae5e4f8329b
permissions -rw-r--r--
Merge heads.
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/*
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 *   SONEWS News Server
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 *   see AUTHORS for the list of contributors
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 *
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 *   This program is free software: you can redistribute it and/or modify
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 *   it under the terms of the GNU General Public License as published by
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 *   the Free Software Foundation, either version 3 of the License, or
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 *   (at your option) any later version.
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 *
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 *   This program is distributed in the hope that it will be useful,
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *   GNU General Public License for more details.
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 *
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 *   You should have received a copy of the GNU General Public License
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 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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package org.sonews.daemon.command;
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import java.io.IOException;
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import java.util.List;
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import org.sonews.daemon.NNTPConnection;
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import org.sonews.storage.Channel;
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import org.sonews.storage.StorageBackendException;
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/**
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 * Class handling the LISTGROUP command.
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 * @author Christian Lins
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 * @author Dennis Schwerdel
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 * @since n3tpd/0.1
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 */
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public class ListGroupCommand implements Command
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{
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  @Override
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  public String[] getSupportedCommandStrings()
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  {
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    return new String[]{"LISTGROUP"};
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  }
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  @Override
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  public boolean hasFinished()
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  {
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    return true;
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  }
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  @Override
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  public String impliedCapability()
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  {
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    return null;
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  }
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  @Override
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  public boolean isStateful()
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  {
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    return false;
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  }
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  @Override
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  public void processLine(NNTPConnection conn, final String commandName, byte[] raw)
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    throws IOException, StorageBackendException
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  {
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    final String[] command = commandName.split(" ");
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    Channel group;
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    if(command.length >= 2)
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    {
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      group = Channel.getByName(command[1]);
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    }
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    else
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    {
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      group = conn.getCurrentChannel();
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    }
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    if (group == null)
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    {
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      conn.println("412 no group selected; use GROUP <group> command");
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      return;
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    }
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    List<Long> ids = group.getArticleNumbers();
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    conn.println("211 " + ids.size() + " " +
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      group.getFirstArticleNumber() + " " + 
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      group.getLastArticleNumber() + " list of article numbers follow");
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    for(long id : ids)
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    {
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      // One index number per line
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      conn.println(Long.toString(id));
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    }
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    conn.println(".");
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  }
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}