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1
16
17 package org.apache.jetspeed.portal.portlets;
18
19 import org.apache.ecs.ConcreteElement;
21 import org.apache.ecs.StringElement;
22
23 import org.apache.jetspeed.portal.PortletConfig;
25 import org.apache.jetspeed.portal.PortletException;
26 import org.apache.jetspeed.util.JetspeedClearElement;
27 import org.apache.jetspeed.util.MimeType;
28 import org.apache.jetspeed.cache.disk.JetspeedDiskCache;
29 import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
30 import org.apache.jetspeed.services.logging.JetspeedLogger;
31
32 import org.apache.turbine.util.RunData;
34
35 import java.io.ByteArrayOutputStream  ;
37 import java.io.IOException ;
38 import java.io.PrintWriter ;
39 import java.io.UnsupportedEncodingException ;
40
41
42 import org.xml.sax.AttributeList ;
43 import org.xml.sax.HandlerBase ;
44 import org.xml.sax.Parser ;
45 import org.xml.sax.SAXParseException ;
46 import org.xml.sax.SAXException ;
47 import org.xml.sax.helpers.ParserFactory ;
48
49
60 public class WMLFilePortlet extends FileWatchPortlet
61 {
62
65 private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(WMLFilePortlet.class.getName());
66
67 private ConcreteElement content = new StringElement("Not available");
68
69
72 public boolean supportsType( MimeType type ) {
73 return type.equals(MimeType.WML);
74 }
75
76
78 public void init() throws PortletException {
79
80 PortletConfig config = this.getPortletConfig();
81 ByteArrayOutputStream bos = new ByteArrayOutputStream ();
82
83 try {
84
93 content = new JetspeedClearElement(
94 JetspeedDiskCache.getInstance().getEntry( config.getURL() ).getData() );
95 } catch (Exception e) {
96 throw new PortletException( e.getMessage() );
97 } finally {
98 try {
99 bos.close();
100 } catch (IOException e) {}
101 }
102 }
103
104 public ConcreteElement getContent( RunData data ) {
105 return content;
106 }
107
108 class WMLFilter extends HandlerBase {
109
110 private static final String DEFAULT_PARSER_NAME = "javax.xml.parsers.SAXParser";
111
112 protected PrintWriter out=new PrintWriter (System.out);
113
114 public WMLFilter(PrintWriter outPW) throws UnsupportedEncodingException {
115 this.out=outPW;
116 }
117
118 public void filter(String uri) {
119
120 try {
121 HandlerBase handler = this;
122
123 Parser parser = ParserFactory.makeParser(DEFAULT_PARSER_NAME);
124 parser.setDocumentHandler(handler);
125 parser.setErrorHandler(handler);
126 parser.parse(uri);
127 }
128 catch (Exception e) {
129 logger.error("Exception", e);
130 }
131 }
132
133 public void processingInstruction(String target, String data) {
134 }
136
137 public void startElement(String name, AttributeList attrs) {
138
139 if (name.equals("wml")) return;
141
142 out.print('<');
144 out.print(name);
145 if (attrs != null) {
146 int len = attrs.getLength();
147 for (int i = 0; i < len; i++) {
148 out.print(' ');
149 out.print(attrs.getName(i));
150 out.print("=\"");
151 out.print(normalize(attrs.getValue(i)));
152 out.print('"');
153 }
154 }
155 out.print('>');
156 }
157
158 public void characters(char ch[], int start, int length) {
159 out.print(normalize(new String (ch, start, length)));
160 }
161
162 public void ignorableWhitespace(char ch[], int start, int length) {
163 characters(ch, start, length);
164 }
165
166 public void endElement(String name) {
167 if (name.equals("wml")) return;
169
170 out.print("</");
172 out.print(name);
173 out.print('>');
174 }
175
176 public void endDocument() {
177 out.flush();
178 }
179
180 public void warning(SAXParseException ex) {
181 logger.info(getLocationString(ex)+": "+ex.getMessage());
182 }
183
184 public void error(SAXParseException ex) {
185 logger.error(getLocationString(ex)+": "+ex, ex);
186 }
187
188 public void fatalError(SAXParseException ex) throws SAXException {
189 logger.error(getLocationString(ex)+": "+ex, ex);
190 throw ex;
191 }
192
193
196 private String getLocationString(SAXParseException ex) {
197 StringBuffer str = new StringBuffer ();
198
199 String systemId = ex.getSystemId();
200 if (systemId != null) {
201 int index = systemId.lastIndexOf('/');
202 if (index != -1)
203 systemId = systemId.substring(index + 1);
204 str.append(systemId);
205 }
206 str.append(':');
207 str.append(ex.getLineNumber());
208 str.append(':');
209 str.append(ex.getColumnNumber());
210
211 return str.toString();
212
213 }
214
215
218 protected String normalize(String s) {
219 StringBuffer str = new StringBuffer ();
220
221 int len = (s != null) ? s.length() : 0;
222 for (int i = 0; i < len; i++) {
223 char ch = s.charAt(i);
224 switch (ch) {
225 case '<': {
226 str.append("<");
227 break;
228 }
229 case '>': {
230 str.append(">");
231 break;
232 }
233 case '&': {
234 str.append("&");
235 break;
236 }
237 case '"': {
238 str.append(""");
239 break;
240 }
241 default: {
242 str.append(ch);
243 }
244 }
245 }
246
247 return str.toString();
248
249 }
250 }
251 }
252 |
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