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/*
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* StarOffice 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 com.so.news.command;
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import java.io.IOException;
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import com.so.news.NNTPConnection;
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import com.so.news.storage.Article;
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import com.so.news.storage.Group;
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/**
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* Class handling the NEXT and LAST command.
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* @author Christian Lins
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* @author Dennis Schwerdel
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*/
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public class NextCommand extends Command
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{
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public NextCommand(NNTPConnection conn)
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{
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super(conn);
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}
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public boolean process(String[] command) throws IOException
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{
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String commandName = command[0];
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if (!(commandName.equalsIgnoreCase("NEXT") || commandName
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.equalsIgnoreCase("LAST")))
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return false;
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// untested, RFC977 complient
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Article currA = getCurrentArticle();
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Group currG = getCurrentGroup();
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if (currA == null)
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{
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printStatus(420, "no current article has been selected");
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return true;
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}
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if (currG == null)
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{
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printStatus(412, "no newsgroup selected");
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return true;
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}
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Article article;
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if (commandName.equalsIgnoreCase("NEXT"))
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{
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article = currA.nextArticleInGroup();
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if (article == null)
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{
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printStatus(421, "no next article in this group");
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return true;
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}
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}
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else
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{
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article = currA.prevArticleInGroup();
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if (article == null)
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{
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printStatus(422, "no previous article in this group");
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return true;
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}
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}
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setCurrentArticle(article);
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printStatus(223, article.getNumberInGroup() + " " + article.getMessageID()
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+ " article retrieved - request text separately");
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return true;
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}
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}
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