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16 package org.outerj.daisy.publisher.serverimpl.docpreparation;
17
18 import org.xml.sax.ContentHandler  ;
19 import org.xml.sax.SAXException ;
20 import org.xml.sax.Locator ;
21 import org.xml.sax.Attributes ;
22 import org.xml.sax.helpers.AttributesImpl ;
23 import org.outerj.daisy.repository.*;
24 import org.outerj.daisy.navigation.NavigationManager;
25 import org.outerj.daisy.navigation.NavigationVersionMode;
26 import org.outerj.daisy.util.Constants;
27 import org.outerj.daisy.publisher.serverimpl.PublisherImpl;
28 import org.outerj.daisy.publisher.serverimpl.requestmodel.PublisherVersionMode;
29 import org.outerj.daisy.xmlutil.SaxBuffer;
30 import org.apache.avalon.framework.logger.Logger;
31
32 import java.util.regex.Matcher ;
33
34
37 public class DaisyLinkEnhancerHandler implements ContentHandler {
38 private ContentHandler consumer;
39 private Repository repository;
40 private VariantKey navigationDoc;
41 private PublisherVersionMode versionMode;
42 private NavigationVersionMode navVersionMode;
43 private NavigationManager navigationManager;
44 private Logger logger;
45 private long documentBranchId;
46 private long documentLanguageId;
47 private long imageWidthFieldId = -1;
48 private long imageHeightFieldId = -1;
49
50 public DaisyLinkEnhancerHandler(Repository repository, long documentBranchId,
51 long documentLanguageId, VariantKey navigationDoc, PublisherVersionMode versionMode,
52 ContentHandler consumer, Logger logger) {
53 this.repository = repository;
54 this.consumer = consumer;
55 this.navigationDoc = navigationDoc;
56 this.versionMode = versionMode;
57 this.navVersionMode = versionMode == PublisherVersionMode.LAST ? NavigationVersionMode.LAST : NavigationVersionMode.LIVE;
58 this.navigationManager = (NavigationManager)repository.getExtension("NavigationManager");
59 this.logger = logger;
60 this.documentBranchId = documentBranchId;
61 this.documentLanguageId = documentLanguageId;
62 }
63
64 public void startElement (String namespaceURI, String localName, String qName, Attributes atts) throws SAXException {
65 boolean forwardStartElement = true;
66 if (namespaceURI.equals("") && (localName.equals("a") || localName.equals("img"))) {
67 String href;
68 boolean isLink = false;
69 if (localName.equals("a")) {
70 href = atts.getValue("href");
71 isLink = true;
72 } else {
73 href = atts.getValue("src");
74 }
75 if (href != null) {
76 Matcher matcher = Constants.DAISY_LINK_PATTERN.matcher(href);
77 if (matcher.matches()) {
78 String navigationPath = null;
79 Version version = null;
80
81 Document document = null;
82 long documentId;
83 try {
84 documentId = Long.parseLong(matcher.group(1));
85 String branch = matcher.group(3);
86 if (branch == null || branch.equals(""))
87 branch = String.valueOf(documentBranchId);
88 String language = matcher.group(5);
89 if (language == null || language.equals(""))
90 language = String.valueOf(documentLanguageId);
91 document = repository.getDocument(documentId, branch, language, false);
92 } catch (Exception e) {
93 }
95
96 if (document != null) {
97 String versionSpec = matcher.group(7);
98 try {
99 if (versionSpec != null) {
100 if (versionSpec.equalsIgnoreCase("last")) {
101 version = document.getLastVersion();
102 } else if (versionSpec.equalsIgnoreCase("live")) {
103 version = document.getLiveVersion();
104 } else {
105 version = document.getVersion(Long.parseLong(versionSpec));
106 }
107 } else {
108 if (versionMode == PublisherVersionMode.LAST)
109 version = document.getLastVersion();
110 else
111 version = document.getLiveVersion();
112
113 }
114 } catch (Exception e) {
115 }
117 }
118
119 if (isLink && navigationDoc != null && document != null) {
120 try {
121 navigationPath = navigationManager.reverseLookup(document.getVariantKey(), navigationDoc, navVersionMode);
122 } catch (RepositoryException e) {
123 logger.error("Error performing reverse document lookup for navigation tree " + navigationDoc + " and document " + document.getVariantKey(), e);
124 }
125 }
126
127 if (version != null) {
128 AttributesImpl newAttrs = new AttributesImpl (atts);
129 if (navigationPath != null)
130 newAttrs.addAttribute(PublisherImpl.NAMESPACE, "navigationPath", "p:navigationPath", "CDATA", navigationPath);
131
132 if (localName.equals("img")) {
133 addImageAttributes(newAttrs, version);
134 }
135
136 consumer.startElement(namespaceURI, localName, qName, newAttrs);
137 forwardStartElement = false;
138
139 SaxBuffer linkInfoBuffer = new SaxBuffer();
140 try {
141 AttributesImpl linkInfoAttrs = new AttributesImpl (atts);
142 linkInfoAttrs.addAttribute("", "documentName", "documentName", "CDATA", version.getDocumentName());
143 String documentTypeName = repository.getRepositorySchema().getDocumentTypeById(document.getDocumentTypeId(), false).getName();
144 linkInfoAttrs.addAttribute("", "documentType", "documentType", "CDATA", documentTypeName);
145
146 linkInfoBuffer.startElement(PublisherImpl.NAMESPACE, "linkInfo", "p:linkInfo", linkInfoAttrs);
147 Part[] parts = version.getParts().getArray();
148 for (int i = 0; i < parts.length; i++) {
149 AttributesImpl partInfoAttrs = new AttributesImpl ();
150 partInfoAttrs.addAttribute("", "id", "id", "CDATA", String.valueOf(parts[i].getTypeId()));
151 partInfoAttrs.addAttribute("", "name", "name", "CDATA", parts[i].getTypeName());
152 if (parts[i].getFileName() != null)
153 partInfoAttrs.addAttribute("", "fileName", "fileName", "CDATA", parts[i].getFileName());
154 linkInfoBuffer.startElement(PublisherImpl.NAMESPACE, "linkPartInfo", "p:linkPartInfo", partInfoAttrs);
155 linkInfoBuffer.endElement(PublisherImpl.NAMESPACE, "linkPartInfo", "p:linkPartInfo");
156 }
157 linkInfoBuffer.endElement(PublisherImpl.NAMESPACE, "linkInfo", "p:linkInfo");
158 } catch (Throwable e) {
159 linkInfoBuffer = null;
160 }
161 if (linkInfoBuffer != null)
162 linkInfoBuffer.toSAX(consumer);
163 }
164 }
165 }
166 }
167
168 if (forwardStartElement)
169 consumer.startElement(namespaceURI, localName, qName, atts);
170 }
171
172 private void addImageAttributes(AttributesImpl attrs, Version version) {
173 if (imageWidthFieldId == -1 || imageHeightFieldId == -1) {
175 try {
176 imageWidthFieldId = repository.getRepositorySchema().getFieldTypeByName("ImageWidth", false).getId();
177 imageHeightFieldId = repository.getRepositorySchema().getFieldTypeByName("ImageHeight", false).getId();
178 } catch (Throwable e) {
179 imageWidthFieldId = -2;
181 imageHeightFieldId = -2;
182 }
183 }
184
185 if (imageWidthFieldId > 0 && imageHeightFieldId > 0) {
187 if (version.hasField(imageWidthFieldId))
188 attrs.addAttribute(PublisherImpl.NAMESPACE, "imageWidth", "p:imageWidth", "CDATA", version.getField(imageWidthFieldId).getValue().toString());
189 if (version.hasField(imageHeightFieldId))
190 attrs.addAttribute(PublisherImpl.NAMESPACE, "imageHeight", "p:imageHeight", "CDATA", version.getField(imageHeightFieldId).getValue().toString());
191 }
192 }
193
194 public void endDocument() throws SAXException {
195 consumer.endDocument();
196 }
197
198 public void startDocument () throws SAXException {
199 consumer.startDocument();
200 }
201
202 public void characters (char ch[], int start, int length) throws SAXException {
203 consumer.characters(ch, start, length);
204 }
205
206 public void ignorableWhitespace (char ch[], int start, int length) throws SAXException {
207 consumer.ignorableWhitespace(ch, start, length);
208 }
209
210 public void endPrefixMapping (String prefix) throws SAXException {
211 consumer.endPrefixMapping(prefix);
212 }
213
214 public void skippedEntity (String name) throws SAXException {
215 consumer.skippedEntity(name);
216 }
217
218 public void setDocumentLocator (Locator locator) {
219 consumer.setDocumentLocator(locator);
220 }
221
222 public void processingInstruction (String target, String data) throws SAXException {
223 consumer.processingInstruction(target, data);
224 }
225
226 public void startPrefixMapping (String prefix, String uri) throws SAXException {
227 consumer.startPrefixMapping(prefix, uri);
228 }
229
230 public void endElement (String namespaceURI, String localName, String qName) throws SAXException {
231 consumer.endElement(namespaceURI, localName, qName);
232 }
233
234 }
235 |
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