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1
3 import java.io.IOException  ;
4
5 import java.net.MalformedURLException ;
6 import java.net.URL ;
7
8 import org.xml.sax.Attributes ;
9 import org.xml.sax.ContentHandler ;
10 import org.xml.sax.ErrorHandler ;
11 import org.xml.sax.Locator ;
12 import org.xml.sax.SAXException ;
13 import org.xml.sax.SAXNotRecognizedException ;
14 import org.xml.sax.SAXNotSupportedException ;
15 import org.xml.sax.SAXParseException ;
16 import org.xml.sax.XMLReader ;
17
18 import org.xml.sax.helpers.XMLReaderFactory ;
19
20
21
24 public class SAXTest implements ContentHandler , ErrorHandler
25 {
26
27
28
32
33
36 public static void main (String args[])
37 {
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 =
51 System.getProperty("org.xml.sax.driver",
52 "org.apache.xerces.parsers.SAXParser");
53 System.out.println("SAX driver class: " +
54 driverName +
55 "\n (you can specify a different one using the " +
56 "org.xml.sax.driver property)");
57 System.out.print("\n");
58
59
60
64 System.out.println("Now, we'll try to create an instance of the " +
65 "driver, using XMLReaderFactory");
66 XMLReader reader = null;
67 try {
68 reader = XMLReaderFactory.createXMLReader(driverName);
69 } catch (SAXException e) {
70 System.out.println("Failed to create XMLReader: " +
71 e.getMessage() +
72 "\nMake sure that the class actually " +
73 "exists and is present on your CLASSPATH" +
74 "\nor specify a different class using the " +
75 "org.xml.sax.driver property");
76 System.exit(1);
77 }
78 System.out.println("XMLReader created successfully\n");
79
80
81 System.out.println("Checking defaults for some well-known features:");
85 checkFeature(reader, "http://xml.org/sax/features/namespaces");
86 checkFeature(reader, "http://xml.org/sax/features/namespace-prefixes");
87 checkFeature(reader, "http://xml.org/sax/features/string-interning");
88 checkFeature(reader, "http://xml.org/sax/features/validation");
89 checkFeature(reader,
90 "http://xml.org/sax/features/external-general-entities");
91 checkFeature(reader,
92 "http://xml.org/sax/features/external-parameter-entities");
93 System.out.print("\n");
94
95
96 System.out.println("Creating and assigning handlers\n");
100 SAXTest handler = new SAXTest();
101 reader.setContentHandler(handler);
102 reader.setErrorHandler(handler);
103
104 if (args.length > 0) {
108 for (int i = 0; i < args.length; i++) {
109 String systemId = makeAbsoluteURL(args[i]);
110 System.out.println("Trying file " + systemId);
111 try {
112 reader.parse(systemId);
113 } catch (SAXException e1) {
114 System.out.println(systemId +
115 " failed with XML error: " +
116 e1.getMessage());
117 } catch (IOException e2) {
118 System.out.println(systemId +
119 " failed with I/O error: " +
120 e2.getMessage());
121 }
122 System.out.print("\n");
123 }
124 } else {
125 System.out.println("No documents supplied on command line; " +
126 "parsing skipped.");
127 }
128
129
130 System.out.println("SAX2 test finished.");
134 }
135
136
137
140 private static void checkFeature (XMLReader reader, String name)
141 {
142 try {
143 System.out.println(" " +
144 name +
145 " = " +
146 reader.getFeature(name));
147 } catch (SAXNotRecognizedException e) {
148 System.out.println("XMLReader does not recognize feature " +
149 name);
150 } catch (SAXNotSupportedException e) {
151 System.out.println("XMLReader recognizes feature " +
152 name +
153 " but does not support checking its value");
154 }
155 }
156
157
158
169 private static String makeAbsoluteURL (String url)
170 {
171 URL baseURL;
172
173 String currentDirectory = System.getProperty("user.dir");
174 String fileSep = System.getProperty("file.separator");
175 String file = currentDirectory.replace(fileSep.charAt(0), '/') + '/';
176
177 if (file.charAt(0) != '/') {
178 file = "/" + file;
179 }
180
181 try {
182 baseURL = new URL ("file", null, file);
183 return new URL (baseURL, url).toString();
184 } catch (MalformedURLException e) {
185 System.err.println(url + ": " + e.getMessage());
186 return url;
187 }
188 }
189
190 private static String makeNSName (String uri, String localName,
191 String qName)
192 {
193 if (uri.equals(""))
194 uri = "[none]";
195 if (localName.equals(""))
196 localName = "[none]";
197 if (qName.equals(""))
198 qName = "[none]";
199 return uri + '/' + localName + '/' + qName;
200 }
201
202 private static String escapeData (char ch[], int start, int length)
203 {
204 StringBuffer buf = new StringBuffer ();
205 for (int i = start; i < start + length; i++) {
206 switch(ch[i]) {
207 case '\n':
208 buf.append("\\n");
209 break;
210 case '\t':
211 buf.append("\\t");
212 break;
213 case '\r':
214 buf.append("\\r");
215 break;
216 default:
217 buf.append(ch[i]);
218 break;
219 }
220 }
221 return buf.toString();
222 }
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
315
319 public void warning (SAXParseException e)
320 throws SAXException
321 {
322 System.out.println(" EVENT: warning " +
323 e.getMessage() + ' ' +
324 e.getSystemId() + ' ' +
325 e.getLineNumber() + ' ' +
326 e.getColumnNumber());
327 }
328
329 public void error (SAXParseException e)
330 throws SAXException
331 {
332 System.out.println(" EVENT: error " +
333 e.getMessage() + ' ' +
334 e.getSystemId() + ' ' +
335 e.getLineNumber() + ' ' +
336 e.getColumnNumber());
337 }
338
339 public void fatalError (SAXParseException e)
340 throws SAXException
341 {
342 System.out.println(" EVENT: fatal error " +
343 e.getMessage() + ' ' +
344 e.getSystemId() + ' ' +
345 e.getLineNumber() + ' ' +
346 e.getColumnNumber());
347 }
348
349 }
350
351
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