src/org/sonews/daemon/command/StatCommand.java
author František Kučera <franta-hg@frantovo.cz>
Wed Oct 12 23:10:31 2011 +0200 (2011-10-12)
changeset 74 e1244384cc6f
parent 37 74139325d305
permissions -rwxr-xr-x
Drupal: XSL transformace XHTML části
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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 org.sonews.storage.Article;
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import org.sonews.daemon.NNTPConnection;
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import org.sonews.storage.StorageBackendException;
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/**
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 * Implementation of the STAT command.
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 * @author Christian Lins
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 * @since sonews/0.5.0
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 */
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public class StatCommand implements Command {
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	@Override
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	public String[] getSupportedCommandStrings() {
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		return new String[]{"STAT"};
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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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	// TODO: Method has various exit points => Refactor!
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	@Override
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	public void processLine(NNTPConnection conn, final String line, byte[] raw)
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			throws IOException, StorageBackendException {
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		final String[] command = line.split(" ");
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		Article article = null;
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		if (command.length == 1) {
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			article = conn.getCurrentArticle();
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			if (article == null) {
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				conn.println("420 no current article has been selected");
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				return;
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			}
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		} else if (command[1].matches(NNTPConnection.MESSAGE_ID_PATTERN)) {
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			// Message-ID
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			article = Article.getByMessageID(command[1]);
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			if (article == null) {
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				conn.println("430 no such article found");
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				return;
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			}
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		} else {
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			// Message Number
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			try {
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				long aid = Long.parseLong(command[1]);
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				article = conn.getCurrentChannel().getArticle(aid);
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			} catch (NumberFormatException ex) {
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				ex.printStackTrace();
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			} catch (StorageBackendException ex) {
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				ex.printStackTrace();
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			}
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			if (article == null) {
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				conn.println("423 no such article number in this group");
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				return;
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			}
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			conn.setCurrentArticle(article);
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		}
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		conn.println("223 " + conn.getCurrentChannel().getIndexOf(article) + " "
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				+ article.getMessageID()
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				+ " article retrieved - request text separately");
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	}
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}