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1
29
30 package com.caucho.jsp;
31
32 import com.caucho.log.Log;
33 import com.caucho.util.L10N;
34 import com.caucho.vfs.Path;
35 import com.caucho.xml.QName;
36
37 import javax.servlet.jsp.tagext.TagInfo  ;
38 import java.io.IOException ;
39 import java.util.HashMap ;
40 import java.util.logging.Logger ;
41
42
45 public class ParseTagManager {
46 static final L10N L = new L10N(ParseTagManager.class);
47 private static final Logger log = Log.open(ParseTagManager.class);
48
49 private JspResourceManager _resourceManager;
50 private TaglibManager _taglibManager;
51 private TagFileManager _tagFileManager;
52
53 private HashMap <QName,TagInfo > _tagMap = new HashMap <QName,TagInfo >();
54 private HashMap <String ,Taglib> _taglibMap = new HashMap <String ,Taglib>();
55
56 public ParseTagManager(JspResourceManager resourceManager,
57 TaglibManager taglibManager,
58 TagFileManager tagFileManager)
59 throws JspParseException, IOException
60 {
61 _resourceManager = resourceManager;
62 _taglibManager = taglibManager;
63
64 _tagFileManager = tagFileManager;
65 }
66
67
70 public synchronized AnalyzedTag analyzeTag(Class cl)
71 {
72 return _taglibManager.analyzeTag(cl);
73 }
74
75
78 public synchronized TagInfo getTag(QName qname)
79 throws JspParseException
80 {
81 TagInfo tag = getTagImpl(qname);
82
83 if (tag instanceof TagInfoImpl)
84 ((TagInfoImpl) tag).validate();
85
86 return tag;
87 }
88
89
92 private TagInfo getTagImpl(QName qname)
93 throws JspParseException
94 {
95 TagInfo tag = _tagMap.get(qname);
96
97 if (tag != null)
98 return tag;
99
100 tag = _tagFileManager.getTag(qname.getPrefix(),
101 qname.getLocalName(),
102 qname.getNamespaceURI());
103 _tagMap.put(qname, tag);
104
105 if (tag != null)
106 return tag;
107
108 Taglib taglib = addTaglib(qname);
109 if (taglib == null)
110 return null;
111
112 String name = qname.getName();
113 String tail = qname.getLocalName();
114
115 if (qname.getNamespaceURI() == null) {
116 int p = name.lastIndexOf(':');
117
118 if (p < 0)
119 return null;
120
121 tail = name.substring(p + 1);
122 }
123
124 if (taglib != null)
125 tag = taglib.getTag(tail);
126
127 if (tag == null) {
128 String tagLocation = taglib.getTagFilePath(tail);
129 Path path = taglib.getPath();
130
131 if (path != null && tagLocation != null) {
132 path = path.lookup(tagLocation);
133
134 tag = _tagFileManager.getTag(path, qname.getPrefix(), tagLocation);
135
136 if (tag != null) {
137 return tag;
138 }
139 }
140
141 if (tagLocation != null) {
142 tag = _tagFileManager.getTag(qname.getPrefix(), tagLocation);
143
144 if (tag == null)
145 throw new JspParseException(L.l("'{0}' is an unknown tag-file in tag library '{1}'.",
146 tagLocation, taglib.getURI()));
147 }
148 }
149
150 if (tag == null)
151 throw new JspParseException(L.l("'{0}' is an unknown tag in tag library '{1}'.",
152 tail, taglib.getURI()));
153
154 _tagMap.put(qname, tag);
155
156 return tag;
157 }
158
159
162 public synchronized Class getTagClass(QName qname)
163 throws Exception
164 {
165 TagInfo tagInfo = getTag(qname);
166
167 if (tagInfo == null)
168 return null;
169
170 String className = tagInfo.getTagClassName();
171
172 if (className != null)
173 return _tagFileManager.loadClass(className);
174 else
175 return null;
176 }
177
178 public synchronized Taglib addTaglib(QName qname)
179 throws JspParseException
180 {
181 String prefix = qname.getPrefix();
182
183 Taglib taglib = (Taglib) _taglibMap.get(prefix);
184 if (_taglibMap.get(prefix) != null)
185 return taglib;
186
187 String uri = qname.getNamespace();
188
189 taglib = addTaglib(prefix, uri);
190
191 _taglibMap.put(prefix, taglib);
192
193 return taglib;
194 }
195
196
199 public synchronized Taglib addTaglib(String prefix, String uri)
200 throws JspParseException
201 {
202 Taglib taglib = null;
203
204 boolean hasTld = false;
205
206 if (uri == null)
207 return null;
208 else if (uri.startsWith("urn:jsptagdir:")) {
209 String tagDir = uri.substring("urn:jsptagdir:".length());
210
211 taglib = addTaglibDir(prefix, tagDir);
212 hasTld = true;
213
214 if (taglib == null) {
215 throw error(L.l("`{0}' has no matching tag. The taglib uri must match a <uri> element in a taglib.tld.", uri));
216 }
217 }
218 else {
219 if (uri.startsWith("urn:jsptld:")) {
220 hasTld = true;
221 uri = uri.substring("urn:jsptld:".length());
222 }
223
224 String location = uri;
225
226 taglib = _taglibManager.getTaglib(prefix, uri, location);
227
228 if (hasTld && taglib == null) {
229 throw error(L.l("`{0}' has no matching tag. The taglib uri must match a <uri> element in a taglib.tld.", uri));
230 }
231 }
232
233 return taglib;
234 }
235
236
239 public synchronized Taglib addTaglibDir(String prefix, String dir)
240 throws JspParseException
241 {
242 return _taglibManager.getTaglibDir(prefix, dir);
243 }
244
245
248 public synchronized Taglib addTaglib(String prefix,
249 String uri,
250 String location)
251 throws JspParseException
252 {
253 Taglib taglib = _taglibManager.getTaglib(prefix, uri, location);
254
255 return addTaglib(taglib);
256 }
257
258 private Taglib addTaglib(Taglib taglib)
259 throws JspParseException
260 {
261 taglib = taglib.copy();
262
263 for (Taglib oldTaglib : _taglibMap.values()) {
264 if (oldTaglib != null) {
265 oldTaglib.addTaglib(taglib);
266 taglib.addTaglib(oldTaglib);
267 }
268 }
269
270 _taglibMap.put(taglib.getPrefixString(), taglib);
271
272 return taglib;
273 }
274
275
276 public boolean hasTags()
277 {
278 return _taglibMap != null && _taglibMap.size() > 1;
279 }
280
281 public JspParseException error(String message)
282 {
283 return new JspParseException(message);
284 }
285 }
286 |
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