    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  You may obtain a copy of the License at
    008     *
    009     *      http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the License for the specific language governing permissions and
    015     * limitations under the License.
    016     */
    017
    018
    019    package examples.nntp;
    020
    021    import java.io.IOException;
    022    import java.io.PrintWriter;
    023    import java.net.SocketException;
    024    import java.util.List;
    025
    026    import org.apache.commons.net.PrintCommandListener;
    027    import org.apache.commons.net.nntp.Article;
    028    import org.apache.commons.net.nntp.NNTPClient;
    029    import org.apache.commons.net.nntp.NewsgroupInfo;
    030    import org.apache.commons.net.nntp.Threader;
    031
    032
    033    public class MessageThreading {
    034        public MessageThreading() {
    035        }
    036
    037        public static void main(String[] args) throws SocketException, IOException {
    038
    039            if (args.length != 3)
    040                usage();
    041
    042            String hostname = args[0];
    043            String user = args[1];
    044            String password = args[2];
    045
    046            NNTPClient client = new NNTPClient();
    047            client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
    048            client.connect(hostname);
    049    //      optional authentication
    050    //
    051    //        if(!client.authenticate(user, password)) {
    052    //            System.out.println("Authentication failed for user " + user + "!");
    053    //          //  System.exit(1);
    054    //        }
    055    //
    056            NewsgroupInfo group = new NewsgroupInfo();
    057            client.selectNewsgroup("alt.test", group);
    058
    059            long lowArticleNumber = group.getFirstArticle();
    060            long highArticleNumber = lowArticleNumber + 5000;
    061
    062            System.out.println("Retrieving articles between [" + lowArticleNumber + "] and [" + highArticleNumber + "]");
    063            List<Article> articles = NNTPUtils.getArticleInfo(client, lowArticleNumber, highArticleNumber);
    064
    065            System.out.println("Building message thread tree...");
    066            Threader threader = new Threader();
    067            Article root = (Article)threader.thread(articles);
    068
    069            Article.printThread(root, 0);
    070        }
    071
    072
    073        public static void usage() {
    074            System.out.println("Usage: MessageThreading <hostname> <user> <password>");
    075            System.exit(0);
    076        }
    077    }