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1
19
20 package org.netbeans.modules.project.libraries;
21
22 import java.io.ByteArrayInputStream  ;
23 import java.io.IOException ;
24 import java.io.InputStream ;
25 import java.net.URL ;
26 import java.util.Stack ;
27 import javax.xml.parsers.ParserConfigurationException ;
28 import org.openide.xml.XMLUtil;
29 import org.xml.sax.Attributes ;
30 import org.xml.sax.ContentHandler ;
31 import org.xml.sax.EntityResolver ;
32 import org.xml.sax.ErrorHandler ;
33 import org.xml.sax.InputSource ;
34 import org.xml.sax.Locator ;
35 import org.xml.sax.SAXException ;
36 import org.xml.sax.SAXParseException ;
37 import org.xml.sax.XMLReader ;
38 import org.xml.sax.helpers.AttributesImpl ;
39
40
51 public class LibraryDeclarationParser implements ContentHandler , EntityResolver {
52
53 private StringBuffer buffer;
54
55 private LibraryDeclarationConvertor parslet;
56
57 private LibraryDeclarationHandler handler;
58
59 private Stack <Object []> context;
60
61
62
68 public LibraryDeclarationParser(final LibraryDeclarationHandler handler, final LibraryDeclarationConvertor parslet) {
69 this.parslet = parslet;
70 this.handler = handler;
71 buffer = new StringBuffer (111);
72 context = new Stack <Object []>();
73 }
74
75
79 public final void setDocumentLocator(Locator locator) {
80 }
81
82
86 public final void startDocument() throws SAXException {
87 }
88
89
93 public final void endDocument() throws SAXException {
94 }
95
96
100 public final void startElement(String ns, String name, String qname, Attributes attrs) throws SAXException {
101 dispatch(true);
102 context.push(new Object [] {qname, new AttributesImpl (attrs)});
103 if ("volume".equals(qname)) {
104 handler.start_volume(attrs);
105 } else if ("library".equals(qname)) {
106 handler.start_library(attrs);
107 }
108 }
109
110
114 public final void endElement(String ns, String name, String qname) throws SAXException {
115 dispatch(false);
116 context.pop();
117 if ("volume".equals(qname)) {
118 handler.end_volume();
119 } else if ("library".equals(qname)) {
120 handler.end_library();
121 }
122 }
123
124
128 public final void characters(char[] chars, int start, int len) throws SAXException {
129 buffer.append(chars, start, len);
130 }
131
132
136 public final void ignorableWhitespace(char[] chars, int start, int len) throws SAXException {
137 }
138
139
143 public final void processingInstruction(String target, String data) throws SAXException {
144 }
145
146
150 public final void startPrefixMapping(final String prefix, final String uri) throws SAXException {
151 }
152
153
157 public final void endPrefixMapping(final String prefix) throws SAXException {
158 }
159
160
164 public final void skippedEntity(String name) throws SAXException {
165 }
166
167 private void dispatch(final boolean fireOnlyIfMixed) throws SAXException {
168 if (fireOnlyIfMixed && buffer.length() == 0) return;
170 Object [] ctx = context.peek();
171 String here = (String ) ctx[0];
172 Attributes attrs = (Attributes ) ctx[1];
173 if ("description".equals(here)) {
174 if (fireOnlyIfMixed) throw new IllegalStateException ("Unexpected characters() event! (Missing DTD?)");
175 handler.handle_description (buffer.length() == 0 ? null : buffer.toString(), attrs);
176 } else if ("type".equals(here)) {
177 if (fireOnlyIfMixed) throw new IllegalStateException ("Unexpected characters() event! (Missing DTD?)");
178 handler.handle_type(buffer.length() == 0 ? null : buffer.toString(), attrs);
179 } else if ("resource".equals(here)) {
180 if (fireOnlyIfMixed) throw new IllegalStateException ("Unexpected characters() event! (Missing DTD?)");
181 handler.handle_resource(parslet.parseResource(buffer.length() == 0 ? null : buffer.toString()), attrs);
182 } else if ("name".equals(here)) {
183 if (fireOnlyIfMixed) throw new IllegalStateException ("Unexpected characters() event! (Missing DTD?)");
184 handler.handle_name(buffer.length() == 0 ? null : buffer.toString(), attrs);
185 } else if ("localizing-bundle".equals(here)) {
186 if (fireOnlyIfMixed) throw new IllegalStateException ("Unexpected characters() event! (Missing DTD?)");
187 handler.handle_localizingBundle(buffer.length() == 0 ? null : buffer.toString(), attrs);
188 } else {
189 }
191 buffer.delete(0, buffer.length());
192 }
193
194
203 public void parse(final InputSource input) throws SAXException , ParserConfigurationException , IOException {
204 parse(input, this);
205 }
206
207
216 public void parse(final URL url) throws SAXException , ParserConfigurationException , IOException {
217 parse(new InputSource (url.toExternalForm()), this);
218 }
219
220
229 public static void parse(final InputSource input, final LibraryDeclarationHandler handler, final LibraryDeclarationConvertor parslet) throws SAXException , ParserConfigurationException , IOException {
230 parse(input, new LibraryDeclarationParser(handler, parslet));
231 }
232
233
242 public static void parse(final URL url, final LibraryDeclarationHandler handler, final LibraryDeclarationConvertor parslet) throws SAXException , ParserConfigurationException , IOException {
243 parse(new InputSource (url.toExternalForm()), handler, parslet);
244 }
245
246 private static void parse(final InputSource input, final LibraryDeclarationParser recognizer) throws SAXException , ParserConfigurationException , IOException {
247 try {
248 XMLReader parser = XMLUtil.createXMLReader(false, false);
249 parser.setContentHandler(recognizer);
250 parser.setErrorHandler(recognizer.getDefaultErrorHandler());
251 parser.setEntityResolver(recognizer);
252 parser.parse(input);
253 } finally {
254 if (!recognizer.context.empty()) {
256 recognizer.context.clear();
257 }
258 if (recognizer.buffer.length() > 0) {
259 recognizer.buffer.delete(0, recognizer.buffer.length());
260 }
261 }
262 }
263
264
269 protected ErrorHandler getDefaultErrorHandler() {
270 return new ErrorHandler () {
271 public void error(SAXParseException ex) throws SAXException {
272 throw ex;
273 }
274
275 public void fatalError(SAXParseException ex) throws SAXException {
276 throw ex;
277 }
278
279 public void warning(SAXParseException ex) throws SAXException {
280 }
282 };
283
284 }
285
286
288 public InputSource resolveEntity (String publicId, String systemId)
289 throws SAXException {
290 if ("-//NetBeans//DTD Library Declaration 1.0//EN".equals(publicId)) {
291 InputStream is = new ByteArrayInputStream (new byte[0]);
292 return new InputSource (is);
293 }
294 return null; }
296 }
297
298 |
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