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examples.nntp.NNTPUtils	0%	0%

1		package examples.nntp;
2
3		import java.io.BufferedReader;
4		import java.io.IOException;
5		import java.io.Reader;
6		import java.util.StringTokenizer;
7
8		import org.apache.commons.net.io.DotTerminatedMessageReader;
9		import org.apache.commons.net.nntp.Article;
10		import org.apache.commons.net.nntp.NNTPClient;
11
12		/**
13		*
14		* Some convenience methods for NNTP example classes.
15		*
16		* @author Rory Winston <rwinston@checkfree.com>
17		*/
18	0	public class NNTPUtils {
19
20		/**
21		* Given an {@link NNTPClient} instance, and an integer range of messages, return
22		* an array of {@link Article} instances.
23		* @param client
24		* @param lowArticleNumber
25		* @param highArticleNumber
26		* @return Article[] An array of Article
27		* @throws IOException
28		*/
29		public static Article[] getArticleInfo(NNTPClient client, int lowArticleNumber, class="keyword">int highArticleNumber)
30		throws IOException {
31	0	Reader reader = null;
32	0	Article[] articles = null;
33	0	reader =
34		(DotTerminatedMessageReader) client.retrieveArticleInfo(
35		lowArticleNumber,
36		highArticleNumber);
37
38	0	if (reader != null) {
39	0	String theInfo = readerToString(reader);
40	0	StringTokenizer st = new StringTokenizer(theInfo, "\n");
41
42		// Extract the article information
43		// Mandatory format (from NNTP RFC 2980) is :
44		// Subject\tAuthor\tDate\tID\tReference(s)\tByte Count\tLine Count
45
46	0	int count = st.countTokens();
47	0	articles = new Article[count];
48	0	int index = 0;
49
50	0	while (st.hasMoreTokens()) {
51	0	StringTokenizer stt = new StringTokenizer(st.nextToken(), "\t");
52	0	Article article = new Article();
53	0	article.setArticleNumber(Integer.parseInt(stt.nextToken()));
54	0	article.setSubject(stt.nextToken());
55	0	article.setFrom(stt.nextToken());
56	0	article.setDate(stt.nextToken());
57	0	article.setArticleId(stt.nextToken());
58	0	article.addHeaderField("References", stt.nextToken());
59	0	articles[index++] = article;
60		}
61		} else {
62	0	return null;
63		}
64
65	0	return articles;
66		}
67
68
69		/**
70		* Convert a {@link Reader} instance to a String
71		* @param reader The Reader instance
72		* @return String
73		*/
74		public static String readerToString(Reader reader) {
75	0	String temp = null;
76	0	StringBuffer sb = null;
77	0	BufferedReader bufReader = new BufferedReader(reader);
78
79	0	sb = new StringBuffer();
80		try {
81	0	temp = bufReader.readLine();
82	0	while (temp != null) {
83	0	sb.append(temp);
84	0	sb.append("\n");
85	0	temp = bufReader.readLine();
86		}
87	0	} catch (IOException e) {
88	0	e.printStackTrace();
89	0	}
90
91	0	return sb.toString();
92		}
93		}

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