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1
3 package org.htmlparser.tests;
4
5 import java.io.IOException  ;
6
7 import java.net.MalformedURLException ;
8 import java.net.URL ;
9
10 import org.xml.sax.Attributes ;
11 import org.xml.sax.ContentHandler ;
12 import org.xml.sax.ErrorHandler ;
13 import org.xml.sax.Locator ;
14 import org.xml.sax.SAXException ;
15 import org.xml.sax.SAXNotRecognizedException ;
16 import org.xml.sax.SAXNotSupportedException ;
17 import org.xml.sax.SAXParseException ;
18 import org.xml.sax.XMLReader ;
19
20 import org.xml.sax.helpers.XMLReaderFactory ;
21
22
23
26 public class SAXTest implements ContentHandler , ErrorHandler
27 {
28
29
33
34
37 public static void main (String args[])
38 {
39 System.out.println("************************************" +
40 "************************************");
41 System.out.println("* Testing SAX2");
42 System.out.println("************************************" +
43 "************************************");
44 System.out.print("\n");
45
46
50 String driverName = "org.htmlparser.sax.XMLReader";
54 System.out.println("SAX driver class: " +
55 driverName +
56 "\n (you can specify a different one using the " +
57 "org.xml.sax.driver property)");
58 System.out.print("\n");
59
60
61
65 System.out.println("Now, we'll try to create an instance of the " +
66 "driver, using XMLReaderFactory");
67 XMLReader reader = null;
68 try {
69 reader = XMLReaderFactory.createXMLReader(driverName);
70 } catch (SAXException e) {
71 System.out.println("Failed to create XMLReader: " +
72 e.getMessage() +
73 "\nMake sure that the class actually " +
74 "exists and is present on your CLASSPATH" +
75 "\nor specify a different class using the " +
76 "org.xml.sax.driver property");
77 System.exit(1);
78 }
79 System.out.println("XMLReader created successfully\n");
80
81
82 System.out.println("Checking defaults for some well-known features:");
86 checkFeature(reader, "http://xml.org/sax/features/namespaces");
87 checkFeature(reader, "http://xml.org/sax/features/namespace-prefixes");
88 checkFeature(reader, "http://xml.org/sax/features/string-interning");
89 checkFeature(reader, "http://xml.org/sax/features/validation");
90 checkFeature(reader,
91 "http://xml.org/sax/features/external-general-entities");
92 checkFeature(reader,
93 "http://xml.org/sax/features/external-parameter-entities");
94 System.out.print("\n");
95
96
97 System.out.println("Creating and assigning handlers\n");
101 SAXTest handler = new SAXTest();
102 reader.setContentHandler(handler);
103 reader.setErrorHandler(handler);
104
105 if (args.length > 0) {
109 for (int i = 0; i < args.length; i++) {
110 String systemId = makeAbsoluteURL(args[i]);
111 System.out.println("Trying file " + systemId);
112 try {
113 reader.parse(systemId);
114 } catch (SAXException e1) {
115 System.out.println(systemId +
116 " failed with XML error: " +
117 e1.getMessage());
118 } catch (IOException e2) {
119 System.out.println(systemId +
120 " failed with I/O error: " +
121 e2.getMessage());
122 }
123 System.out.print("\n");
124 }
125 } else {
126 System.out.println("No documents supplied on command line; " +
127 "parsing skipped.");
128 }
129
130
131 System.out.println("SAX2 test finished.");
135 }
136
137
138
141 private static void checkFeature (XMLReader reader, String name)
142 {
143 try {
144 System.out.println(" " +
145 name +
146 " = " +
147 reader.getFeature(name));
148 } catch (SAXNotRecognizedException e) {
149 System.out.println("XMLReader does not recognize feature " +
150 name);
151 } catch (SAXNotSupportedException e) {
152 System.out.println("XMLReader recognizes feature " +
153 name +
154 " but does not support checking its value");
155 }
156 }
157
158
159
170 private static String makeAbsoluteURL (String url)
171 {
172 URL baseURL;
173
174 String currentDirectory = System.getProperty("user.dir");
175 String fileSep = System.getProperty("file.separator");
176 String file = currentDirectory.replace(fileSep.charAt(0), '/') + '/';
177
178 if (file.charAt(0) != '/') {
179 file = "/" + file;
180 }
181
182 try {
183 baseURL = new URL ("file", null, file);
184 return new URL (baseURL, url).toString();
185 } catch (MalformedURLException e) {
186 System.err.println(url + ": " + e.getMessage());
187 return url;
188 }
189 }
190
191 private static String makeNSName (String uri, String localName,
192 String qName)
193 {
194 if (uri.equals(""))
195 uri = "[none]";
196 if (localName.equals(""))
197 localName = "[none]";
198 if (qName.equals(""))
199 qName = "[none]";
200 return uri + '/' + localName + '/' + qName;
201 }
202
203 private static String escapeData (char ch[], int start, int length)
204 {
205 StringBuffer buf = new StringBuffer ();
206 for (int i = start; i < start + length; i++) {
207 switch(ch[i]) {
208 case '\n':
209 buf.append("\\n");
210 break;
211 case '\t':
212 buf.append("\\t");
213 break;
214 case '\r':
215 buf.append("\\r");
216 break;
217 default:
218 buf.append(ch[i]);
219 break;
220 }
221 }
222 return buf.toString();
223 }
224
225
226
230 public void setDocumentLocator (Locator locator)
231 {
232 System.out.println(" EVENT: setDocumentLocator");
233 }
234
235 public void startDocument ()
236 throws SAXException
237 {
238 System.out.println(" EVENT: startDocument");
239 }
240
241 public void endDocument ()
242 throws SAXException
243 {
244 System.out.println(" EVENT: endDocument");
245 }
246
247 public void startPrefixMapping (String prefix, String uri)
248 throws SAXException
249 {
250 System.out.println(" EVENT: startPrefixMapping " +
251 prefix + " = " + uri);
252 }
253
254 public void endPrefixMapping (String prefix)
255 throws SAXException
256 {
257 System.out.println(" EVENT: endPrefixMapping " + prefix);
258 }
259
260 public void startElement (String namespaceURI, String localName,
261 String qName, Attributes atts)
262 throws SAXException
263 {
264 System.out.println(" EVENT: startElement " +
265 makeNSName(namespaceURI, localName, qName));
266 int attLen = atts.getLength();
267 for (int i = 0; i < attLen; i++) {
268 char ch[] = atts.getValue(i).toCharArray();
269 System.out.println(" Attribute " +
270 makeNSName(atts.getURI(i),
271 atts.getLocalName(i),
272 atts.getQName(i)) +
273 '=' +
274 escapeData(ch, 0, ch.length));
275 }
276 }
277
278 public void endElement (String namespaceURI, String localName,
279 String qName)
280 throws SAXException
281 {
282 System.out.println(" EVENT: endElement " +
283 makeNSName(namespaceURI, localName, qName));
284 }
285
286 public void characters (char ch[], int start, int length)
287 throws SAXException
288 {
289 System.out.println(" EVENT: characters " +
290 escapeData(ch, start, length));
291 }
292
293 public void ignorableWhitespace (char ch[], int start, int length)
294 throws SAXException
295 {
296 System.out.println(" EVENT: ignorableWhitespace " +
297 escapeData(ch, start, length));
298 }
299
300 public void processingInstruction (String target, String data)
301 throws SAXException
302 {
303 System.out.println(" EVENT: processingInstruction " +
304 target + ' ' + data);
305 }
306
307 public void skippedEntity (String name)
308 throws SAXException
309 {
310 System.out.println(" EVENT: skippedEntity " + name);
311 }
312
313
314
318 public void warning (SAXParseException e)
319 throws SAXException
320 {
321 System.out.println(" EVENT: warning " +
322 e.getMessage() + ' ' +
323 e.getSystemId() + ' ' +
324 e.getLineNumber() + ' ' +
325 e.getColumnNumber());
326 }
327
328 public void error (SAXParseException e)
329 throws SAXException
330 {
331 System.out.println(" EVENT: error " +
332 e.getMessage() + ' ' +
333 e.getSystemId() + ' ' +
334 e.getLineNumber() + ' ' +
335 e.getColumnNumber());
336 }
337
338 public void fatalError (SAXParseException e)
339 throws SAXException
340 {
341 System.out.println(" EVENT: fatal error " +
342 e.getMessage() + ' ' +
343 e.getSystemId() + ' ' +
344 e.getLineNumber() + ' ' +
345 e.getColumnNumber());
346 }
347
348 }
349
350 |
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