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1
57
58 package dom;
59
60 import org.w3c.dom.Attr  ;
61 import org.w3c.dom.Document ;
62 import org.w3c.dom.Element ;
63 import org.w3c.dom.NamedNodeMap ;
64 import org.w3c.dom.NodeList ;
65
66 import util.Arguments;
67
68
69
76 public class DOMFilter {
77
78
82
83 private static final String
84 DEFAULT_PARSER_NAME = "dom.wrappers.DOMParser";
85
86 private static boolean setValidation = false; private static boolean setNameSpaces = true;
88 private static boolean setSchemaSupport = true;
89 private static boolean setSchemaFullSupport = false;
90 private static boolean setDeferredDOM = true;
91
92
93
94
98
99 public static void print(String parserWrapperName, String uri,
100 String elementName, String attributeName) {
101
102 try {
103 DOMParserWrapper parser =
105 (DOMParserWrapper)Class.forName(parserWrapperName).newInstance();
106
107 parser.setFeature( "http://apache.org/xml/features/dom/defer-node-expansion",
108 setDeferredDOM );
109 parser.setFeature( "http://xml.org/sax/features/validation",
110 setValidation );
111 parser.setFeature( "http://xml.org/sax/features/namespaces",
112 setNameSpaces );
113 parser.setFeature( "http://apache.org/xml/features/validation/schema",
114 setSchemaSupport );
115 parser.setFeature( "http://apache.org/xml/features/validation/schema-full-checking",
116 setSchemaFullSupport );
117
118
119 Document document = parser.parse(uri);
120
121 NodeList elements = document.getElementsByTagName(elementName);
123
124 print(elements, attributeName);
126 } catch (Exception e) {
127 e.printStackTrace(System.err);
128 }
129
130 }
132
136
141 private static void print(NodeList elements, String attributeName) {
142
143 if (elements == null) {
145 return;
146 }
147
148 if (attributeName == null) {
150 int elementCount = elements.getLength();
151 for (int i = 0; i < elementCount; i++) {
152 Element element = (Element )elements.item(i);
153 print(element, element.getAttributes());
154 }
155 }
156
157 else {
159 int elementCount = elements.getLength();
160 for (int i = 0; i < elementCount; i++) {
161 Element element = (Element )elements.item(i);
162 NamedNodeMap attributes = element.getAttributes();
163 if (attributes.getNamedItem(attributeName) != null) {
164 print(element, attributes);
165 }
166 }
167 }
168
169 }
171
172 private static void print(Element element, NamedNodeMap attributes) {
173
174 System.out.print('<');
175 System.out.print(element.getNodeName());
176 if (attributes != null) {
177 int attributeCount = attributes.getLength();
178 for (int i = 0; i < attributeCount; i++) {
179 Attr attribute = (Attr )attributes.item(i);
180 System.out.print(' ');
181 System.out.print(attribute.getNodeName());
182 System.out.print("=\"");
183 System.out.print(normalize(attribute.getNodeValue()));
184 System.out.print('"');
185 }
186 }
187 System.out.println('>');
188
189 }
191
192 private static String normalize(String s) {
193 StringBuffer str = new StringBuffer ();
194
195 int len = (s != null) ? s.length() : 0;
196 for (int i = 0; i < len; i++) {
197 char ch = s.charAt(i);
198 switch (ch) {
199 case '<': {
200 str.append("<");
201 break;
202 }
203 case '>': {
204 str.append(">");
205 break;
206 }
207 case '&': {
208 str.append("&");
209 break;
210 }
211 case '"': {
212 str.append(""");
213 break;
214 }
215 case '\r':
216 case '\n': {
217 str.append("&#");
218 str.append(Integer.toString(ch));
219 str.append(';');
220 break;
221 }
222 default: {
223 str.append(ch);
224 }
225 }
226 }
227
228 return str.toString();
229
230 }
232
236
237 public static void main(String argv[]) {
238
239 Arguments argopt = new Arguments();
240 argopt.setUsage( new String []
241 { "usage: java dom.DOMFilter (options) uri ...","",
242 "options:",
243 " -p name Specify DOM parser wrapper by name.",
244 " -e name Specify element name to search for. Default is \"*\".",
245 " -a name Specify attribute name of specified elements.",
246 " -p name Specify DOM parser wrapper by name.",
247 " -n | -N Turn on/off namespace [default=on]",
248 " -v | -V Turn on/off validation [default=on]",
249 " -s | -S Turn on/off Schema support [default=on]",
250 " -f | -F Turn on/off Schema full consraint checking [default=off]",
251 " -d | -D Turn on/off deferred DOM [default=on]",
252 " -h This help screen."} );
253
254 if (argv.length == 0) {
256 argopt.printUsage();
257 System.exit(1);
258 }
259
260 String parserName = DEFAULT_PARSER_NAME;
262 String elementName = "*"; String attributeName = null;
264
265
266
268 argopt.parseArgumentTokens(argv , new char[] { 'p', 'e', 'a'} );
269 int c;
270 String arg = null;
271 while ( ( arg = argopt.getlistFiles() ) != null ) {
272 outer:
273 while ( (c = argopt.getArguments()) != -1 ){
274 switch (c) {
275 case 'v':
276 setValidation = true;
277 break;
278 case 'V':
279 setValidation = false;
280 break;
281 case 'N':
282 setNameSpaces = false;
283 break;
284 case 'n':
285 setNameSpaces = true;
286 break;
287 case 'p':
288 parserName = argopt.getStringParameter();
289 break;
290 case 'd':
291 setDeferredDOM = true;
292 break;
293 case 'D':
294 setDeferredDOM = false;
295 break;
296 case 's':
297 setSchemaSupport = true;
298 break;
299 case 'S':
300 setSchemaSupport = false;
301 break;
302 case 'e':
303 elementName = argopt.getStringParameter();
304 break;
305 case 'a':
306 attributeName = argopt.getStringParameter();
307 break;
308 case 'f':
309 setSchemaFullSupport = true;
310 break;
311 case 'F':
312 setSchemaFullSupport = false;
313 break;
314 case '?':
315 case 'h':
316 case '-':
317 argopt.printUsage();
318 System.exit(1);
319 break;
320 case -1:
321 break outer;
322 default:
323 break;
324 }
325 }
326 System.err.println(arg+':');
328 print(parserName, arg, elementName, attributeName);
329 }
330 }
332 }
334 |
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