1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/trunk/com/so/news/command/NextCommand.java Tue Jan 20 10:21:03 2009 +0100
1.3 @@ -0,0 +1,82 @@
1.4 +/*
1.5 + * StarOffice News Server
1.6 + * see AUTHORS for the list of contributors
1.7 + *
1.8 + * This program is free software: you can redistribute it and/or modify
1.9 + * it under the terms of the GNU General Public License as published by
1.10 + * the Free Software Foundation, either version 3 of the License, or
1.11 + * (at your option) any later version.
1.12 + *
1.13 + * This program is distributed in the hope that it will be useful,
1.14 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.15 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.16 + * GNU General Public License for more details.
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License
1.19 + * along with this program. If not, see <http://www.gnu.org/licenses/>.
1.20 + */
1.21 +
1.22 +package com.so.news.command;
1.23 +
1.24 +import java.io.IOException;
1.25 +import com.so.news.NNTPConnection;
1.26 +import com.so.news.storage.Article;
1.27 +import com.so.news.storage.Group;
1.28 +
1.29 +/**
1.30 + * Class handling the NEXT and LAST command.
1.31 + * @author Christian Lins
1.32 + * @author Dennis Schwerdel
1.33 + */
1.34 +public class NextCommand extends Command
1.35 +{
1.36 + public NextCommand(NNTPConnection conn)
1.37 + {
1.38 + super(conn);
1.39 + }
1.40 +
1.41 + public boolean process(String[] command) throws IOException
1.42 + {
1.43 + String commandName = command[0];
1.44 + if (!(commandName.equalsIgnoreCase("NEXT") || commandName
1.45 + .equalsIgnoreCase("LAST")))
1.46 + return false;
1.47 + // untested, RFC977 complient
1.48 + Article currA = getCurrentArticle();
1.49 + Group currG = getCurrentGroup();
1.50 + if (currA == null)
1.51 + {
1.52 + printStatus(420, "no current article has been selected");
1.53 + return true;
1.54 + }
1.55 + if (currG == null)
1.56 + {
1.57 + printStatus(412, "no newsgroup selected");
1.58 + return true;
1.59 + }
1.60 + Article article;
1.61 + if (commandName.equalsIgnoreCase("NEXT"))
1.62 + {
1.63 + article = currA.nextArticleInGroup();
1.64 + if (article == null)
1.65 + {
1.66 + printStatus(421, "no next article in this group");
1.67 + return true;
1.68 + }
1.69 + }
1.70 + else
1.71 + {
1.72 + article = currA.prevArticleInGroup();
1.73 + if (article == null)
1.74 + {
1.75 + printStatus(422, "no previous article in this group");
1.76 + return true;
1.77 + }
1.78 + }
1.79 + setCurrentArticle(article);
1.80 + printStatus(223, article.getNumberInGroup() + " " + article.getMessageID()
1.81 + + " article retrieved - request text separately");
1.82 + return true;
1.83 + }
1.84 +
1.85 +}