src/org/sonews/daemon/command/ListGroupCommand.java
author František Kučera <franta-hg@frantovo.cz>
Thu Jul 05 13:19:19 2012 +0200 (2012-07-05)
changeset 119 f5b57e221e38
parent 37 74139325d305
permissions -rwxr-xr-x
mezery, tabulátory
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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.Group;
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import org.sonews.storage.StorageBackendException;
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import org.sonews.storage.StorageManager;
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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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	@Override
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	public String[] getSupportedCommandStrings() {
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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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		return true;
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	}
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	@Override
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	public String impliedCapability() {
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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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		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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		final String[] command = commandName.split(" ");
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		Group group;
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		if (command.length >= 2) {
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			group = StorageManager.current().getGroup(command[1]);
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		} else {
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			group = conn.getCurrentChannel();
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		}
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		if (group == null) {
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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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			// 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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}