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1
29
30 package com.caucho.jsp;
31
32 import com.caucho.jsp.java.TagTaglib;
33 import com.caucho.loader.SimpleLoader;
34 import com.caucho.util.L10N;
35 import com.caucho.util.Log;
36 import com.caucho.vfs.Path;
37
38 import javax.servlet.jsp.tagext.TagInfo  ;
39 import javax.servlet.jsp.tagext.TagLibraryInfo ;
40 import java.util.logging.Level ;
41 import java.util.logging.Logger ;
42
45 public class TagFileManager {
46 static final L10N L = new L10N(TagFileManager.class);
47 private static final Logger log = Log.open(TagFileManager.class);
48
49 private JspCompiler _jspCompiler;
50
51 public TagFileManager(JspCompiler compiler)
52 {
53 _jspCompiler = compiler;
54 }
55
56 public TagInfo getTag(String prefix, String shortName, String location)
57 throws JspParseException
58 {
59 if (location == null)
60 return null;
61
62 try {
63 String originalLocation = location;
64
65 if (location.startsWith("urn:jsptagdir:"))
66 location = location.substring("urn:jsptagdir:".length());
67
68 TagLibraryInfo taglib = new TagTaglib(prefix, originalLocation);
69
70 String uri = location;
71
72 TagInfo tag = null;
73
74 try {
75 tag = getTag(uri, taglib);
76 if (tag != null)
77 return tag;
78 } catch (Exception e) {
79 log.log(Level.FINEST, e.toString(), e);
80 }
81
82 if (! location.endsWith("/"))
83 location = location + "/";
84
85 uri = location + shortName + ".tag";
86
87 tag = getTag(uri, taglib);
88 if (tag != null)
89 return tag;
90
91 uri = location + shortName + ".tagx";
92 return getTag(uri, taglib);
93 } catch (Exception e) {
94 throw JspParseException.create(e);
95 }
96 }
97
98 public TagInfo getTag(String prefix, String location)
99 throws JspParseException
100 {
101 TagLibraryInfo taglib = new TagTaglib(prefix, location);
102
103 return getTag(location, taglib);
104 }
105
106 public TagInfo getTag(String location, TagLibraryInfo taglib)
107 throws JspParseException
108 {
109 JspResourceManager resourceManager = _jspCompiler.getResourceManager();
110 if (resourceManager == null)
111 return null;
112
113 Path path = resourceManager.resolvePath(location);
114
115 return getTag(path, location, taglib);
116 }
117
118 public TagInfo getTag(Path path, String prefix, String location)
119 throws JspParseException
120 {
121 TagLibraryInfo taglib = new TagTaglib(prefix, location);
122
123 return getTag(path, location, taglib);
124 }
125
126 public TagInfo getTag(Path path, String location, TagLibraryInfo taglib)
127 throws JspParseException
128 {
129 if (path == null || ! path.canRead())
130 return null;
131
132 try {
133 if (location.endsWith(".tag")) {
134 JspCompilerInstance tagCompiler;
135
136 tagCompiler = _jspCompiler.getCompilerInstance(path, location);
137 tagCompiler.setXML(false);
138
139 return tagCompiler.compileTag(taglib);
140 }
141 else if (location.endsWith(".tagx")) {
142 JspCompilerInstance tagCompiler;
143
144 tagCompiler = _jspCompiler.getCompilerInstance(path, location);
145 tagCompiler.setXML(true);
146
147 return tagCompiler.compileTag(taglib);
148 }
149 else
150 throw new JspParseException(L.l("tag file '{0}' must end with .tag or .tagx",
151 location));
152 } catch (Exception e) {
153 throw JspParseException.create(e);
154 }
155 }
156
157 public Class loadClass(String className)
158 throws Exception
159 {
160 Path classDir = _jspCompiler.getClassDir();
161
162 ClassLoader parentLoader = Thread.currentThread().getContextClassLoader();
163 ClassLoader jspLoader = SimpleLoader.create(parentLoader,
164 classDir,
165 null);
166
167 return Class.forName(className, false, jspLoader);
168 }
169 }
170 |
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