1.1 --- a/org/sonews/daemon/command/NextPrevCommand.java Sun Aug 29 17:04:25 2010 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,116 +0,0 @@
1.4 -/*
1.5 - * SONEWS 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 org.sonews.daemon.command;
1.23 -
1.24 -import java.io.IOException;
1.25 -import org.sonews.daemon.NNTPConnection;
1.26 -import org.sonews.storage.Article;
1.27 -import org.sonews.storage.Channel;
1.28 -import org.sonews.storage.StorageBackendException;
1.29 -
1.30 -/**
1.31 - * Class handling the NEXT and LAST command.
1.32 - * @author Christian Lins
1.33 - * @author Dennis Schwerdel
1.34 - * @since n3tpd/0.1
1.35 - */
1.36 -public class NextPrevCommand implements Command
1.37 -{
1.38 -
1.39 - @Override
1.40 - public String[] getSupportedCommandStrings()
1.41 - {
1.42 - return new String[]{"NEXT", "PREV"};
1.43 - }
1.44 -
1.45 - @Override
1.46 - public boolean hasFinished()
1.47 - {
1.48 - return true;
1.49 - }
1.50 -
1.51 - @Override
1.52 - public String impliedCapability()
1.53 - {
1.54 - return null;
1.55 - }
1.56 -
1.57 - @Override
1.58 - public boolean isStateful()
1.59 - {
1.60 - return false;
1.61 - }
1.62 -
1.63 - @Override
1.64 - public void processLine(NNTPConnection conn, final String line, byte[] raw)
1.65 - throws IOException, StorageBackendException
1.66 - {
1.67 - final Article currA = conn.getCurrentArticle();
1.68 - final Channel currG = conn.getCurrentChannel();
1.69 -
1.70 - if (currA == null)
1.71 - {
1.72 - conn.println("420 no current article has been selected");
1.73 - return;
1.74 - }
1.75 -
1.76 - if (currG == null)
1.77 - {
1.78 - conn.println("412 no newsgroup selected");
1.79 - return;
1.80 - }
1.81 -
1.82 - final String[] command = line.split(" ");
1.83 -
1.84 - if(command[0].equalsIgnoreCase("NEXT"))
1.85 - {
1.86 - selectNewArticle(conn, currA, currG, 1);
1.87 - }
1.88 - else if(command[0].equalsIgnoreCase("PREV"))
1.89 - {
1.90 - selectNewArticle(conn, currA, currG, -1);
1.91 - }
1.92 - else
1.93 - {
1.94 - conn.println("500 internal server error");
1.95 - }
1.96 - }
1.97 -
1.98 - private void selectNewArticle(NNTPConnection conn, Article article, Channel grp,
1.99 - final int delta)
1.100 - throws IOException, StorageBackendException
1.101 - {
1.102 - assert article != null;
1.103 -
1.104 - article = grp.getArticle(grp.getIndexOf(article) + delta);
1.105 -
1.106 - if(article == null)
1.107 - {
1.108 - conn.println("421 no next article in this group");
1.109 - }
1.110 - else
1.111 - {
1.112 - conn.setCurrentArticle(article);
1.113 - conn.println("223 " + conn.getCurrentChannel().getIndexOf(article)
1.114 - + " " + article.getMessageID()
1.115 - + " article retrieved - request text separately");
1.116 - }
1.117 - }
1.118 -
1.119 -}