|
1
28
29 package com.caucho.jsp.java;
30
31 import com.caucho.jsp.JspParseException;
32 import com.caucho.util.L10N;
33 import com.caucho.vfs.WriteStream;
34 import com.caucho.xml.QName;
35
36 import java.io.IOException  ;
37
38 public class JspDirectiveTag extends JspNode {
39 private static final QName IMPORT = new QName("import");
40 private static final QName DISPLAY_NAME = new QName("display-name");
41 private static final QName BODY_CONTENT = new QName("body-content");
42 private static final QName DYNAMIC_ATTRIBUTES
43 = new QName("dynamic-attributes");
44 private static final QName SMALL_ICON = new QName("small-icon");
45 private static final QName LARGE_ICON = new QName("large-icon");
46 private static final QName DESCRIPTION = new QName("description");
47 private static final QName EXAMPLE = new QName("example");
48 private static final QName LANGUAGE = new QName("language");
49 private static final QName PAGE_ENCODING = new QName("pageEncoding");
50 private static final QName IS_EL_IGNORED = new QName("isELIgnored");
51 private static final QName DEFERRED_AS_LITERAL
52 = new QName("deferredSyntaxAllowedAsLiteral");
53 private static final QName TRIM_WHITESPACES
54 = new QName("trimDirectiveWhitespaces");
55
56 private static final QName IS_VELOCITY_ENABLED =
57 new QName("isVelocityEnabled");
58
59 static final L10N L = new L10N(JspDirectiveTag.class);
60
61 private Boolean _isElIgnored;
62 private String _import;
63
64
70 public void addAttribute(QName name, String value)
71 throws JspParseException
72 {
73 if (! _gen.isTag())
74 throw error(L.l("@tag directive is only allowed in tag files"));
75
76 JavaTagGenerator gen = (JavaTagGenerator) _gen;
77
78 if (IS_EL_IGNORED.equals(name)) {
79 boolean isIgnored = value.equals("true");
80
81 _parseState.setELIgnored(isIgnored);
82
83 if (_isElIgnored != null && _isElIgnored.booleanValue() != isIgnored)
84 throw error(L.l("isELIgnored values conflict"));
85
86 _isElIgnored = new Boolean (isIgnored);
87 }
88
92 else if (IS_VELOCITY_ENABLED.equals(name))
93 _parseState.setVelocityEnabled(value.equals("true"));
94 else if (PAGE_ENCODING.equals(name)) {
95 String oldEncoding = _parseState.getPageEncoding();
96
97 if (oldEncoding != null && ! value.equals(oldEncoding))
98 throw error(L.l("pageEncoding `{0}' conflicts with previous value of pageEncoding `{1}'. Check the .jsp and any included .jsp files for conflicts.", value, oldEncoding));
99
100 _parseState.setPageEncoding(value);
101 }
102 else if (LANGUAGE.equals(name)) {
103 if (! value.equals("java"))
104 throw error(L.l("`{0}' is not supported as a JSP scripting language.",
105 value));
106 }
107 else if (IMPORT.equals(name)) {
108 _import = value;
109
110 _parseState.addImport(value);
111 }
112 else if (DISPLAY_NAME.equals(name)) {
113 String oldValue = gen.getDisplayName();
114
115 if (oldValue != null && ! oldValue.equals(value))
116 throw error(L.l("@tag display-name '{0}' conflicts with previous value '{1}'. The display-name attribute may only be specified once.",
117 value, oldValue));
118
119
120 gen.setDisplayName(value);
121 }
122 else if (SMALL_ICON.equals(name)) {
123 String oldValue = gen.getSmallIcon();
124
125 if (oldValue != null && ! oldValue.equals(value))
126 throw error(L.l("@tag small-icon '{0}' conflicts with previous value '{1}'. The small-icon attribute may only be specified once.",
127 value, oldValue));
128
129
130 gen.setSmallIcon(value);
131 }
132 else if (LARGE_ICON.equals(name)) {
133 String oldValue = gen.getLargeIcon();
134
135 if (oldValue != null && ! oldValue.equals(value))
136 throw error(L.l("@tag large-icon '{0}' conflicts with previous value '{1}'. The large-icon attribute may only be specified once.",
137 value, oldValue));
138
139
140 gen.setLargeIcon(value);
141 }
142 else if (DESCRIPTION.equals(name)) {
143 String oldValue = gen.getDescription();
144
145 if (oldValue != null && ! oldValue.equals(value))
146 throw error(L.l("@tag description '{0}' conflicts with previous value '{1}'. The description attribute may only be specified once.",
147 value, oldValue));
148
149
150 gen.setDescription(value);
151 }
152 else if (EXAMPLE.equals(name)) {
153 String oldValue = gen.getExample();
154
155 if (oldValue != null && ! oldValue.equals(value))
156 throw error(L.l("@tag example '{0}' conflicts with previous value '{1}'. The example attribute may only be specified once.",
157 value, oldValue));
158
159
160 gen.setExample(value);
161 }
162 else if (DYNAMIC_ATTRIBUTES.equals(name)) {
163 String oldValue = gen.getDynamicAttributes();
164
165 if (oldValue != null && ! oldValue.equals(value))
166 throw error(L.l("@tag dynamic-attributes '{0}' conflicts with previous value '{1}'. The dynamic-attributes attribute may only be specified once.",
167 value, oldValue));
168 else if (gen.findAttribute(value) != null) {
169 throw error(L.l("@tag dynamic-attributes '{0}' conflicts with an attribute.",
170 value));
171 }
172 else if (gen.findVariable(value) != null) {
173 throw error(L.l("@tag dynamic-attributes '{0}' conflicts with a variable.",
174 value));
175 }
176
177 gen.setDynamicAttributes(value);
178 }
179 else if (BODY_CONTENT.equals(name)) {
180 String oldValue = gen.getBodyContent();
181
182 if (oldValue != null && ! oldValue.equals(value)) {
183 throw error(L.l("@tag body-content '{0}' conflicts with previous value '{1}'. The body-content attribute may only be specified once.",
184 value, oldValue));
185 }
186
187 if (value.equals("scriptless") ||
188 value.equals("tagdependent") ||
189 value.equals("empty")) {
190 }
191 else
192 throw error(L.l("'{0}' is an unknown body-content value for the JSP tag directive attribute. 'scriptless', 'tagdependent', and 'empty' are the allowed values.",
193 value));
194
195 gen.setBodyContent(value);
196 }
197 else if (DEFERRED_AS_LITERAL.equals(name)) {
198 _parseState.setDeferredSyntaxAllowedAsLiteral(value.equals("true"));
199 }
200 else {
201 throw error(L.l("'{0}' is an unknown JSP tag directive attribute. The valid attributes are: body-content, deferredSyntaxAllowedAsLiteral, display-name, dynamic-attributes, example, isELIgnored, language, large-icon, pageEncoding, small-icon, trimDirectiveWhitespace.",
202 name.getName()));
203 }
204 }
205
206 protected String getRelativeUrl(String value)
207 {
208 if (value.length() > 0 && value.charAt(0) == '/')
209 return value;
210 else
211 return _parseState.getUriPwd() + value;
212 }
213
214
218 static String parseCharEncoding(String type)
219 throws JspParseException
220 {
221 type = type.toLowerCase();
222 int i;
223 char ch;
224 while ((i = type.indexOf(';')) >= 0 && i < type.length()) {
225 i++;
226 while (i < type.length() && ((ch = type.charAt(i)) == ' ' || ch == '\t'))
227 i++;
228
229 if (i >= type.length())
230 return null;
231
232 type = type.substring(i);
233 i = type.indexOf('=');
234 if (i >= 0) {
235 if (! type.startsWith("charset"))
236 continue;
237
238 for (i++;
239 i < type.length() && ((ch = type.charAt(i)) == ' ' || ch == '\t');
240 i++) {
241 }
242
243 type = type.substring(i);
244 }
245
246 for (i = 0;
247 i < type.length() && (ch = type.charAt(i)) != ';' && ch != ' ';
248 i++) {
249 }
250
251 return type.substring(0, i);
252 }
253
254 return null;
255 }
256
257
260 public void endAttributes()
261 throws JspParseException
262 {
263 if (! _gen.isTag())
264 throw error(L.l("tag directive is only allowed in tag files."));
265 }
266
267
270 public boolean isStatic()
271 {
272 return true;
273 }
274
275
280 public void printXml(WriteStream os)
281 throws IOException
282 {
283 JavaTagGenerator gen = (JavaTagGenerator) _gen;
284
285 os.print("<jsp:directive.tag");
286 os.print(" jsp:id=\"" + gen.generateJspId() + "\"");
287
288 if (_isElIgnored != null)
289 os.print(" el-ignored='" + _isElIgnored + "'");
290
291 if (_import != null)
292 os.print(" import='" + _import + "'");
293
294
298 String dynAttr = gen.getDynamicAttributes();
299 if (dynAttr != null)
300 os.print("dynamic-attributes='" + dynAttr + "'");
301
302 os.print("/>");
303 }
304
305
310 public void generate(JspJavaWriter out)
311 throws Exception
312 {
313 }
314 }
315 |
Popular Tags |
Java API By Example, From Geeks To Geeks.