| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package examples.nntp; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.util.StringTokenizer; |
| |
| import org.apache.commons.net.io.DotTerminatedMessageReader; |
| import org.apache.commons.net.nntp.Article; |
| import org.apache.commons.net.nntp.NNTPClient; |
| |
| /** |
| * |
| * Some convenience methods for NNTP example classes. |
| * |
| * @author Rory Winston <rwinston@checkfree.com> |
| */ |
| public class NNTPUtils { |
| |
| /** |
| * Given an {@link NNTPClient} instance, and an integer range of messages, return |
| * an array of {@link Article} instances. |
| * @param client |
| * @param lowArticleNumber |
| * @param highArticleNumber |
| * @return Article[] An array of Article |
| * @throws IOException |
| */ |
| public static Article[] getArticleInfo(NNTPClient client, int lowArticleNumber, int highArticleNumber) |
| throws IOException { |
| Reader reader = null; |
| Article[] articles = null; |
| reader = |
| (DotTerminatedMessageReader) client.retrieveArticleInfo( |
| lowArticleNumber, |
| highArticleNumber); |
| |
| if (reader != null) { |
| String theInfo = readerToString(reader); |
| StringTokenizer st = new StringTokenizer(theInfo, "\n"); |
| |
| // Extract the article information |
| // Mandatory format (from NNTP RFC 2980) is : |
| // Subject\tAuthor\tDate\tID\tReference(s)\tByte Count\tLine Count |
| |
| int count = st.countTokens(); |
| articles = new Article[count]; |
| int index = 0; |
| |
| while (st.hasMoreTokens()) { |
| StringTokenizer stt = new StringTokenizer(st.nextToken(), "\t"); |
| Article article = new Article(); |
| article.setArticleNumber(Integer.parseInt(stt.nextToken())); |
| article.setSubject(stt.nextToken()); |
| article.setFrom(stt.nextToken()); |
| article.setDate(stt.nextToken()); |
| article.setArticleId(stt.nextToken()); |
| article.addHeaderField("References", stt.nextToken()); |
| articles[index++] = article; |
| } |
| } else { |
| return null; |
| } |
| |
| return articles; |
| } |
| |
| |
| /** |
| * Convert a {@link Reader} instance to a String |
| * @param reader The Reader instance |
| * @return String |
| */ |
| public static String readerToString(Reader reader) { |
| String temp = null; |
| StringBuffer sb = null; |
| BufferedReader bufReader = new BufferedReader(reader); |
| |
| sb = new StringBuffer(); |
| try { |
| temp = bufReader.readLine(); |
| while (temp != null) { |
| sb.append(temp); |
| sb.append("\n"); |
| temp = bufReader.readLine(); |
| } |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| |
| return sb.toString(); |
| } |
| } |