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17 package com.sun.syndication.io.impl;
18
19 import com.sun.syndication.feed.WireFeed;
20 import com.sun.syndication.feed.atom.*;
21 import com.sun.syndication.io.FeedException;
22 import org.jdom.Document;
23 import org.jdom.Element;
24 import org.jdom.Namespace;
25 import org.jdom.output.XMLOutputter;
26
27 import java.util.*;
28
29 /***
30 */
31 public class Atom03Parser extends BaseWireFeedParser {
32 private static final String ATOM_URI = "http://purl.org/atom/ns#";
33
34 public Atom03Parser() {
35 this("atom_0.3");
36 }
37
38 protected Atom03Parser(String type) {
39 super(type);
40 }
41
42 protected Namespace getAtomNamespace() {
43 return Namespace.getNamespace(ATOM_URI);
44 }
45
46 public boolean isMyType(Document document) {
47 Element rssRoot = document.getRootElement();
48 Namespace defaultNS = rssRoot.getNamespace();
49 return (defaultNS!=null) && defaultNS.equals(getAtomNamespace());
50 }
51
52 public WireFeed parse(Document document, boolean validate) throws IllegalArgumentException,FeedException {
53 if (validate) {
54 validateFeed(document);
55 }
56 Element rssRoot = document.getRootElement();
57 return parseFeed(rssRoot);
58 }
59
60 protected void validateFeed(Document document) throws FeedException {
61
62
63
64
65
66
67 }
68
69 protected WireFeed parseFeed(Element eFeed) {
70
71 com.sun.syndication.feed.atom.Feed feed = new com.sun.syndication.feed.atom.Feed(getType());
72
73 Element e = eFeed.getChild("title",getAtomNamespace());
74 if (e!=null) {
75 feed.setTitle(e.getText());
76 }
77
78 List eList = eFeed.getChildren("link",getAtomNamespace());
79 feed.setAlternateLinks(parseAlternateLinks(eList));
80 feed.setOtherLinks(parseOtherLinks(eList));
81
82 e = eFeed.getChild("author",getAtomNamespace());
83 if (e!=null) {
84 feed.setAuthor(parsePerson(e));
85 }
86
87 eList = eFeed.getChildren("contributor",getAtomNamespace());
88 if (eList.size()>0) {
89 feed.setContributors(parsePersons(eList));
90 }
91
92 e = eFeed.getChild("tagline",getAtomNamespace());
93 if (e!=null) {
94 feed.setTagline(parseContent(e));
95 }
96
97 e = eFeed.getChild("id",getAtomNamespace());
98 if (e!=null) {
99 feed.setId(e.getText());
100 }
101
102 e = eFeed.getChild("generator",getAtomNamespace());
103 if (e!=null) {
104 Generator gen = new Generator();
105 gen.setValue(e.getText());
106 String att = e.getAttributeValue("url");
107 if (att!=null) {
108 gen.setUrl(att);
109 }
110 att = e.getAttributeValue("version");
111 if (att!=null) {
112 gen.setVersion(att);
113 }
114 feed.setGenerator(gen);
115 }
116
117 e = eFeed.getChild("copyright",getAtomNamespace());
118 if (e!=null) {
119 feed.setCopyright(e.getText());
120 }
121
122 e = eFeed.getChild("info",getAtomNamespace());
123 if (e!=null) {
124 feed.setInfo(parseContent(e));
125 }
126
127 e = eFeed.getChild("modified",getAtomNamespace());
128 if (e!=null) {
129 feed.setModified(DateParser.parseDate(e.getText()));
130 }
131
132 eList = eFeed.getChildren("entry",getAtomNamespace());
133 if (eList.size()>0) {
134 feed.setEntries(parseEntries(eList));
135 }
136
137 feed.setModules(parseFeedModules(eFeed));
138
139 return feed;
140 }
141
142 private Link parseLink(Element eLink) {
143 Link link = new Link();
144 String att = eLink.getAttributeValue("rel");
145 if (att!=null) {
146 link.setRel(att);
147 }
148 att = eLink.getAttributeValue("type");
149 if (att!=null) {
150 link.setType(att);
151 }
152 att = eLink.getAttributeValue("href");
153 if (att!=null) {
154 link.setHref(att);
155 }
156 return link;
157 }
158
159
160 private List parseLinks(List eLinks,boolean alternate) {
161 List links = new ArrayList();
162 for (int i=0;i<eLinks.size();i++) {
163 Element eLink = (Element) eLinks.get(i);
164
165 String rel = eLink.getAttributeValue("rel");
166 if (alternate) {
167 if ("alternate".equals(rel)) {
168 links.add(parseLink(eLink));
169 }
170 }
171 else {
172 if (!("alternate".equals(rel))) {
173 links.add(parseLink(eLink));
174 }
175 }
176 }
177 return (links.size()>0) ? links : null;
178 }
179
180
181 private List parseAlternateLinks(List eLinks) {
182 return parseLinks(eLinks,true);
183 }
184
185
186 private List parseOtherLinks(List eLinks) {
187 return parseLinks(eLinks,false);
188 }
189
190 private Person parsePerson(Element ePerson) {
191 Person person = new Person();
192 Element e = ePerson.getChild("name",getAtomNamespace());
193 if (e!=null) {
194 person.setName(e.getText());
195 }
196 e = ePerson.getChild("url",getAtomNamespace());
197 if (e!=null) {
198 person.setUrl(e.getText());
199 }
200 e = ePerson.getChild("email",getAtomNamespace());
201 if (e!=null) {
202 person.setEmail(e.getText());
203 }
204 return person;
205 }
206
207
208 private List parsePersons(List ePersons) {
209 List persons = new ArrayList();
210 for (int i=0;i<ePersons.size();i++) {
211 persons.add(parsePerson((Element)ePersons.get(i)));
212 }
213 return (persons.size()>0) ? persons : null;
214 }
215
216 private Content parseContent(Element e) {
217 String value = null;
218 String type = e.getAttributeValue("type");
219 type = (type!=null) ? type : "text/plain";
220 String mode = e.getAttributeValue("mode");
221 if (mode == null) {
222 mode = Content.XML;
223 }
224 if (mode.equals(Content.ESCAPED)) {
225
226 value = e.getText();
227 }
228 else
229 if (mode.equals(Content.BASE64)) {
230 value = Base64.decode(e.getText());
231 }
232 else
233 if (mode.equals(Content.XML)) {
234 XMLOutputter outputter = new XMLOutputter();
235 List eContent = e.getContent();
236 Iterator i = eContent.iterator();
237 while (i.hasNext()) {
238 org.jdom.Content c = (org.jdom.Content) i.next();
239 if (c instanceof Element) {
240 Element eC = (Element) c;
241 if (eC.getNamespace().equals(getAtomNamespace())) {
242 ((Element)c).setNamespace(Namespace.NO_NAMESPACE);
243 }
244 }
245 }
246 value = outputter.outputString(eContent);
247 }
248
249 Content content = new Content();
250 content.setType(type);
251 content.setMode(mode);
252 content.setValue(value);
253 return content;
254 }
255
256
257 private List parseEntries(List eEntries) {
258 List entries = new ArrayList();
259 for (int i=0;i<eEntries.size();i++) {
260 entries.add(parseEntry((Element)eEntries.get(i)));
261 }
262 return (entries.size()>0) ? entries : null;
263 }
264
265 private Entry parseEntry(Element eEntry) {
266 Entry entry = new Entry();
267
268 Element e = eEntry.getChild("title",getAtomNamespace());
269 if (e!=null) {
270 entry.setTitle(e.getText());
271 }
272
273 List eList = eEntry.getChildren("link",getAtomNamespace());
274 entry.setAlternateLinks(parseAlternateLinks(eList));
275 entry.setOtherLinks(parseOtherLinks(eList));
276
277 e = eEntry.getChild("author",getAtomNamespace());
278 if (e!=null) {
279 entry.setAuthor(parsePerson(e));
280 }
281
282 eList = eEntry.getChildren("contributor",getAtomNamespace());
283 if (eList.size()>0) {
284 entry.setContributors(parsePersons(eList));
285 }
286
287 e = eEntry.getChild("id",getAtomNamespace());
288 if (e!=null) {
289 entry.setId(e.getText());
290 }
291
292 e = eEntry.getChild("modified",getAtomNamespace());
293 if (e!=null) {
294 entry.setModified(DateParser.parseDate(e.getText()));
295 }
296
297 e = eEntry.getChild("issued",getAtomNamespace());
298 if (e!=null) {
299 entry.setIssued(DateParser.parseDate(e.getText()));
300 }
301
302 e = eEntry.getChild("summary",getAtomNamespace());
303 if (e!=null) {
304 entry.setSummary(parseContent(e));
305 }
306
307 eList = eEntry.getChildren("content",getAtomNamespace());
308 if (eList.size()>0) {
309 List content = new ArrayList();
310 for (int i=0;i<eList.size();i++) {
311 content.add(parseContent((Element)eList.get(i)));
312 }
313 entry.setContents(content);
314 }
315
316 entry.setModules(parseItemModules(eEntry));
317
318 return entry;
319 }
320
321
322 }