1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 package com.sun.syndication.io.impl;
18
19 import com.sun.syndication.io.WireFeedParser;
20 import org.jdom.Document;
21 import java.util.List;
22
23 /***
24 * Parses an XML document (JDOM Document) into a Feed.
25 * <p>
26 * It accepts all flavors of RSS (0.90, 0.91, 0.92, 0.93, 0.94, 1.0 and 2.0) and
27 * Atom 0.3 feeds.
28 * <p>
29 * The WireFeedParser is a liberal parser.
30 * <p>
31 * WireFeedParser instances are thread safe.
32 * <p>
33 * Parsers for a specific type must extend this class and register in the parser list.
34 * (Right now registration is hardcoded in the WireFeedParser constructor).
35 * <p>
36 * @author Alejandro Abdelnur
37 *
38 */
39 public class FeedParsers extends PluginManager {
40
41 /***
42 * WireFeedParser.classes= [className] ...
43 *
44 */
45 public static final String FEED_PARSERS_KEY = "WireFeedParser.classes";
46
47 /***
48 * Creates a parser instance.
49 * <p>
50 *
51 */
52 public FeedParsers() {
53 super(FEED_PARSERS_KEY);
54 }
55
56 public List getSupportedFeedTypes() {
57 return getKeys();
58 }
59
60 /***
61 * Finds the real parser type for the given document feed.
62 * <p>
63 * @param document document feed to find the parser for.
64 * @return the parser for the given document or <b>null</b> if there is no parser for that document.
65 *
66 */
67 public WireFeedParser getParserFor(Document document) {
68 List parsers = getPlugins();
69 WireFeedParser parser = null;
70 for (int i=0;parser==null && i<parsers.size();i++) {
71 parser = (WireFeedParser) parsers.get(i);
72 if (!parser.isMyType(document)) {
73 parser = null;
74 }
75 }
76 return parser;
77 }
78
79 protected String getKey(Object obj) {
80 return ((WireFeedParser)obj).getType();
81 }
82
83 }