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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_03_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_03_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 List authors = new ArrayList();
85 authors.add(parsePerson(e));
86 feed.setAuthors(authors);
87 }
88
89 eList = eFeed.getChildren("contributor",getAtomNamespace());
90 if (eList.size()>0) {
91 feed.setContributors(parsePersons(eList));
92 }
93
94 e = eFeed.getChild("tagline",getAtomNamespace());
95 if (e!=null) {
96 feed.setTagline(parseContent(e));
97 }
98
99 e = eFeed.getChild("id",getAtomNamespace());
100 if (e!=null) {
101 feed.setId(e.getText());
102 }
103
104 e = eFeed.getChild("generator",getAtomNamespace());
105 if (e!=null) {
106 Generator gen = new Generator();
107 gen.setValue(e.getText());
108 String att = e.getAttributeValue("url");
109 if (att!=null) {
110 gen.setUrl(att);
111 }
112 att = e.getAttributeValue("version");
113 if (att!=null) {
114 gen.setVersion(att);
115 }
116 feed.setGenerator(gen);
117 }
118
119 e = eFeed.getChild("copyright",getAtomNamespace());
120 if (e!=null) {
121 feed.setCopyright(e.getText());
122 }
123
124 e = eFeed.getChild("info",getAtomNamespace());
125 if (e!=null) {
126 feed.setInfo(parseContent(e));
127 }
128
129 e = eFeed.getChild("modified",getAtomNamespace());
130 if (e!=null) {
131 feed.setModified(DateParser.parseDate(e.getText()));
132 }
133
134 feed.setModules(parseFeedModules(eFeed));
135
136 eList = eFeed.getChildren("entry",getAtomNamespace());
137 if (eList.size()>0) {
138 feed.setEntries(parseEntries(eList));
139 }
140
141 List foreignMarkup =
142 extractForeignMarkup(eFeed, feed, getAtomNamespace());
143 if (foreignMarkup.size() > 0) {
144 feed.setForeignMarkup(foreignMarkup);
145 }
146 return feed;
147 }
148
149 private Link parseLink(Element eLink) {
150 Link link = new Link();
151 String att = eLink.getAttributeValue("rel");
152 if (att!=null) {
153 link.setRel(att);
154 }
155 att = eLink.getAttributeValue("type");
156 if (att!=null) {
157 link.setType(att);
158 }
159 att = eLink.getAttributeValue("href");
160 if (att!=null) {
161 link.setHref(att);
162 }
163 return link;
164 }
165
166
167 private List parseLinks(List eLinks,boolean alternate) {
168 List links = new ArrayList();
169 for (int i=0;i<eLinks.size();i++) {
170 Element eLink = (Element) eLinks.get(i);
171
172 String rel = eLink.getAttributeValue("rel");
173 if (alternate) {
174 if ("alternate".equals(rel)) {
175 links.add(parseLink(eLink));
176 }
177 }
178 else {
179 if (!("alternate".equals(rel))) {
180 links.add(parseLink(eLink));
181 }
182 }
183 }
184 return (links.size()>0) ? links : null;
185 }
186
187
188 private List parseAlternateLinks(List eLinks) {
189 return parseLinks(eLinks,true);
190 }
191
192
193 private List parseOtherLinks(List eLinks) {
194 return parseLinks(eLinks,false);
195 }
196
197 private Person parsePerson(Element ePerson) {
198 Person person = new Person();
199 Element e = ePerson.getChild("name",getAtomNamespace());
200 if (e!=null) {
201 person.setName(e.getText());
202 }
203 e = ePerson.getChild("url",getAtomNamespace());
204 if (e!=null) {
205 person.setUrl(e.getText());
206 }
207 e = ePerson.getChild("email",getAtomNamespace());
208 if (e!=null) {
209 person.setEmail(e.getText());
210 }
211 return person;
212 }
213
214
215 private List parsePersons(List ePersons) {
216 List persons = new ArrayList();
217 for (int i=0;i<ePersons.size();i++) {
218 persons.add(parsePerson((Element)ePersons.get(i)));
219 }
220 return (persons.size()>0) ? persons : null;
221 }
222
223 private Content parseContent(Element e) {
224 String value = null;
225 String type = e.getAttributeValue("type");
226 type = (type!=null) ? type : "text/plain";
227 String mode = e.getAttributeValue("mode");
228 if (mode == null) {
229 mode = Content.XML;
230 }
231 if (mode.equals(Content.ESCAPED)) {
232
233 value = e.getText();
234 }
235 else
236 if (mode.equals(Content.BASE64)) {
237 value = Base64.decode(e.getText());
238 }
239 else
240 if (mode.equals(Content.XML)) {
241 XMLOutputter outputter = new XMLOutputter();
242 List eContent = e.getContent();
243 Iterator i = eContent.iterator();
244 while (i.hasNext()) {
245 org.jdom.Content c = (org.jdom.Content) i.next();
246 if (c instanceof Element) {
247 Element eC = (Element) c;
248 if (eC.getNamespace().equals(getAtomNamespace())) {
249 ((Element)c).setNamespace(Namespace.NO_NAMESPACE);
250 }
251 }
252 }
253 value = outputter.outputString(eContent);
254 }
255
256 Content content = new Content();
257 content.setType(type);
258 content.setMode(mode);
259 content.setValue(value);
260 return content;
261 }
262
263
264 private List parseEntries(List eEntries) {
265 List entries = new ArrayList();
266 for (int i=0;i<eEntries.size();i++) {
267 entries.add(parseEntry((Element)eEntries.get(i)));
268 }
269 return (entries.size()>0) ? entries : null;
270 }
271
272 private Entry parseEntry(Element eEntry) {
273 Entry entry = new Entry();
274
275 Element e = eEntry.getChild("title",getAtomNamespace());
276 if (e!=null) {
277 entry.setTitle(e.getText());
278 }
279
280 List eList = eEntry.getChildren("link",getAtomNamespace());
281 entry.setAlternateLinks(parseAlternateLinks(eList));
282 entry.setOtherLinks(parseOtherLinks(eList));
283
284 e = eEntry.getChild("author",getAtomNamespace());
285 if (e!=null) {
286 List authors = new ArrayList();
287 authors.add(parsePerson(e));
288 entry.setAuthors(authors);
289 }
290
291 eList = eEntry.getChildren("contributor",getAtomNamespace());
292 if (eList.size()>0) {
293 entry.setContributors(parsePersons(eList));
294 }
295
296 e = eEntry.getChild("id",getAtomNamespace());
297 if (e!=null) {
298 entry.setId(e.getText());
299 }
300
301 e = eEntry.getChild("modified",getAtomNamespace());
302 if (e!=null) {
303 entry.setModified(DateParser.parseDate(e.getText()));
304 }
305
306 e = eEntry.getChild("issued",getAtomNamespace());
307 if (e!=null) {
308 entry.setIssued(DateParser.parseDate(e.getText()));
309 }
310
311 e = eEntry.getChild("created",getAtomNamespace());
312 if (e!=null) {
313 entry.setCreated(DateParser.parseDate(e.getText()));
314 }
315
316 e = eEntry.getChild("summary",getAtomNamespace());
317 if (e!=null) {
318 entry.setSummary(parseContent(e));
319 }
320
321 eList = eEntry.getChildren("content",getAtomNamespace());
322 if (eList.size()>0) {
323 List content = new ArrayList();
324 for (int i=0;i<eList.size();i++) {
325 content.add(parseContent((Element)eList.get(i)));
326 }
327 entry.setContents(content);
328 }
329
330 entry.setModules(parseItemModules(eEntry));
331
332 List foreignMarkup =
333 extractForeignMarkup(eEntry, entry, getAtomNamespace());
334 if (foreignMarkup.size() > 0) {
335 entry.setForeignMarkup(foreignMarkup);
336 }
337 return entry;
338 }
339
340
341 }