Drupal: posílání zpráv do skupiny.
3 * see AUTHORS for the list of contributors
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package org.sonews.daemon.command;
20 import java.io.IOException;
21 import org.sonews.daemon.NNTPConnection;
22 import org.sonews.storage.Article;
23 import org.sonews.storage.Group;
24 import org.sonews.storage.StorageBackendException;
27 * Class handling the NEXT and LAST command.
28 * @author Christian Lins
29 * @author Dennis Schwerdel
32 public class NextPrevCommand implements Command {
35 public String[] getSupportedCommandStrings() {
36 return new String[]{"NEXT", "PREV"};
40 public boolean hasFinished() {
45 public String impliedCapability() {
50 public boolean isStateful() {
55 public void processLine(NNTPConnection conn, final String line, byte[] raw)
56 throws IOException, StorageBackendException {
57 final Article currA = conn.getCurrentArticle();
58 final Group currG = conn.getCurrentChannel();
61 conn.println("420 no current article has been selected");
66 conn.println("412 no newsgroup selected");
70 final String[] command = line.split(" ");
72 if (command[0].equalsIgnoreCase("NEXT")) {
73 selectNewArticle(conn, currA, currG, 1);
74 } else if (command[0].equalsIgnoreCase("PREV")) {
75 selectNewArticle(conn, currA, currG, -1);
77 conn.println("500 internal server error");
81 private void selectNewArticle(NNTPConnection conn, Article article, Group grp,
83 throws IOException, StorageBackendException {
84 assert article != null;
86 article = grp.getArticle(grp.getIndexOf(article) + delta);
88 if (article == null) {
89 conn.println("421 no next article in this group");
91 conn.setCurrentArticle(article);
92 conn.println("223 " + conn.getCurrentChannel().getIndexOf(article)
93 + " " + article.getMessageID()
94 + " article retrieved - request text separately");