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1
22 package org.jboss.xb.binding;
23
24 import java.io.IOException  ;
25 import java.io.Writer ;
26 import org.xml.sax.Attributes ;
27 import org.xml.sax.ContentHandler ;
28 import org.xml.sax.Locator ;
29 import org.xml.sax.SAXException ;
30
31
38 public class ContentWriter
39 implements ContentHandler
40 {
41 final boolean useIndent;
42 private String indent = " ";
43 private int depth = 0;
44 private boolean started = false;
45
46 private final Writer writer;
47
48 public ContentWriter(Writer writer, boolean indent)
49 {
50 this.writer = writer;
51 this.useIndent = indent;
52 }
53
54 public void setDocumentLocator(Locator locator)
55 {
56 throw new UnsupportedOperationException ();
57 }
58
59 public void startDocument()
60 throws SAXException
61 {
62 }
63
64 public void endDocument()
65 throws SAXException
66 {
67 }
68
69 public void startPrefixMapping(String prefix, String uri)
70 throws SAXException
71 {
72 throw new UnsupportedOperationException ();
73 }
74
75 public void endPrefixMapping(String prefix)
76 throws SAXException
77 {
78 throw new UnsupportedOperationException ();
79 }
80
81 public void startElement(String namespaceURI, String localName, String qName, Attributes atts)
82 throws SAXException
83 {
84 if(useIndent)
85 {
86 write(writer, '\n');
87 for(int j = 0; j < depth; ++j)
88 {
89 write(writer, indent);
90 }
91 }
92
93 if(!started)
94 {
95 started = true;
96 }
97
98 ++depth;
99
100 write(writer, '<');
101 write(writer, qName);
102
103 if(atts != null && atts.getLength() > 0)
104 {
105 for(int i = 0; i < atts.getLength(); ++i)
106 {
107 write(writer, ' ');
108 write(writer, atts.getQName(i));
109 write(writer, "=\"");
110 writeNormalized(writer, atts.getValue(i));
111 write(writer, '\"');
112 }
113 }
114
115
150
151 write(writer, '>');
152 }
153
154 public void endElement(String namespaceURI, String localName,
155 String qName)
156 throws SAXException
157 {
158 --depth;
159 if(!started)
160 {
161 if(useIndent)
162 {
163 write(writer, '\n');
164 for(int j = 0; j < depth; ++j)
165 {
166 write(writer, indent);
167 }
168 }
169 }
170 else
171 {
172 started = false;
173 }
174
175 write(writer, "</");
176 write(writer, qName);
177 write(writer, '>');
178 }
179
180 public void characters(char ch[], int start, int length)
181 throws SAXException
182 {
183 writeNormalized(writer, ch, start, length);
184 }
185
186 public void ignorableWhitespace(char ch[], int start, int length)
187 throws SAXException
188 {
189 throw new UnsupportedOperationException ();
190 }
191
192 public void processingInstruction(String target, String data)
193 throws SAXException
194 {
195 throw new UnsupportedOperationException ();
196 }
197
198 public void skippedEntity(String name)
199 throws SAXException
200 {
201 throw new UnsupportedOperationException ();
202 }
203
204
206 private static void write(Writer writer, String str) throws SAXException
207 {
208 try
209 {
210 writer.write(str);
211 }
212 catch(IOException e)
213 {
214 throw new SAXException ("Writting failed: " + e.getMessage(), e);
215 }
216 }
217
218 private static void writeNormalized(Writer writer, String str) throws SAXException
219 {
220 writeNormalized(writer, str.toCharArray(), 0, str.length());
221 }
222
223 private static void write(Writer writer, int ch) throws SAXException
224 {
225 try
226 {
227 writer.write(ch);
228 }
229 catch(IOException e)
230 {
231 throw new SAXException ("Writting failed: " + e.getMessage(), e);
232 }
233 }
234
235 private static void writeNormalized(Writer writer, char[] ch, int start, int length) throws SAXException
236 {
237 try
238 {
239 int left = start;
240 int i = start;
241 while(i < start + length)
242 {
243 char c = ch[i++];
244 if(c == '<')
245 {
246 writer.write(ch, left, i - left - 1);
247 writer.write("<");
248 left = i;
249 }
250 else if(c == '>')
251 {
252 writer.write(ch, left, i - left - 1);
253 writer.write(">");
254 left = i;
255 }
256 else if(c == '&')
257 {
258 writer.write(ch, left, i - left - 1);
259 writer.write("&");
260 left = i;
261 }
262 else if(c == '\'')
263 {
264 writer.write(ch, left, i - left - 1);
265 writer.write("'");
266 left = i;
267 }
268 else if(c == '\"')
269 {
270 writer.write(ch, left, i - left - 1);
271 writer.write(""");
272 left = i;
273 }
274 }
275
276 if(left < i)
277 {
278 writer.write(ch, left, i - left);
279 }
280 }
281 catch(IOException e)
282 {
283 throw new SAXException ("Writting failed: " + e.getMessage(), e);
284 }
285 }
286 }
287 |
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