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1 package com.teamkonzept.lib.templates;
2
3 import java.io.*;
4 import java.util.*;
5
6 import com.oroinc.text.regex.*;
7
8 import com.teamkonzept.lib.*;
9 import com.teamkonzept.lib.math.*;
10 import org.apache.log4j.Category;
11
12
16 public class TKIfTag extends TKTag
17 {
18 private static final Category CAT = Category.getInstance(TKIfTag.class);
19
20 public static final int TAG_TYPE = TKNameTag.TAG_TYPE+1;
21 public TKVector subSyntaxes;
22 public TKVector subDefs;
23 public String  name = null;
24
25 private final static double THRESHOLD = 0.00001;
26
27
35 public TKIfTag( TKTemplateSyntax parent, String def, PatternMatcherInput matcherInput, boolean hasSubTags ) throws TKTemplateSyntaxException
36 {
37 super( parent );
38
39 subSyntaxes = new TKVector();
40 subDefs = new TKVector();
41
42 TKTemplateSyntax subSyntax;
43 TKEndTag endTag;
44
45 if( !hasSubTags ) {
46 name = def.substring( 0, def.indexOf('=') );
47 }
48 else {
49 int nameEnd = def.indexOf('=');
50 if( (nameEnd > 0) && (def.indexOf('<') > nameEnd) ) {
51 name = def.substring( 0, nameEnd );
52 }
53 }
54
55 do {
56 subDefs.addElement(
57 ( hasSubTags
58 ? (Object ) parent.newChild( def, parent.getSource(), hasSubTags )
59 : (Object ) getValue( def )
60 )
61 );
62 try {
63 subSyntax = parent.newChild( matcherInput, parent.getSource() );
64 }
65 catch (TKTemplateSyntaxException se) {
66 throw se;
67 }
68 catch (Exception e) { throw new TKTemplateSyntaxException(parent.getSource(),"NOEND","IF", def);
70 }
71 if (subSyntax.tags.size() == 0 ||
72 !(subSyntax.tags.lastElement() instanceof TKEndTag)) {
73 throw new TKTemplateSyntaxException(parent.getSource(),"NOEND","IF", def);
74 }
75 subSyntaxes.addElement( subSyntax );
76 endTag = (TKEndTag) subSyntax.tags.lastElement();
77 def = endTag.info;
78 hasSubTags = endTag.hasSubTags;
79 } while( !endTag.type.equals("IF") );
80 }
81
82
84
85 public String getName( TKTemplateData td ) throws TKTemplateSyntaxException
86 {
87 if( name != null ) return name;
88 String def = ((TKTemplateSyntax)subDefs.get(0)).apply( td );
89 return def.substring( 0, def.indexOf('=') );
90 }
91
92 public String getValue( String def )
93 {
94 return def.substring( def.indexOf('=')+1 );
95 }
96
97 public String getValue( int i, TKTemplateData td ) throws TKTemplateSyntaxException
98 {
99 Object def = subDefs.get(i);
100 if( def instanceof String ) return (String ) def;
101
102 return getValue( ((TKTemplateSyntax)def).apply(td) );
103 }
104
105
110 public String apply( TKTemplateData td ) throws TKTemplateSyntaxException
111 {
112 String name = getName( td );
113
114 if( name.equals("EVAL") ) {
115 int size = subDefs.size();
116 for( int i=0; i<size; i++ ) {
117 String expression = getValue( i, td );
118 StringBuffer buf = new StringBuffer ();
119 for (int j = 0; j < expression.length(); j++) {
120
121 char chr = expression.charAt(j);
122 if (chr == '\\')
123 {
124 if (++j >= expression.length()) break;
125 else chr = expression.charAt(j);
126 }
127 buf.append(chr);
128 }
129
130 Eval ev = new Eval();
131 double result = 0;
132 try {
133 result = ev.eval( buf.toString() );
134 }
135 catch( Exception e ) {
136 CAT.error( "error in if-eval-tag: ",e );
138 }
139 if( Math.abs(result) > THRESHOLD ) {
140 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
141 return s.apply( td );
142 }
143 if( i == size-2 ) {
144 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
145 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
146 if( endTag.type.equals( "ELSE" ) ) {
147 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
148 return s.apply(td);
149 }
150 }
151 }
152 } else if( name.equals("EXPRESSION") ) {
153 int size = subDefs.size();
154 for( int i=0; i<size; i++ ) {
155 String expression = getValue( i, td );
156 StringBuffer buf = new StringBuffer ();
157 for (int j = 0; j < expression.length(); j++) {
158
159 char chr = expression.charAt(j);
160 if (chr == '\\')
161 {
162 if (++j >= expression.length()) break;
163 else chr = expression.charAt(j);
164 }
165 buf.append(chr);
166 }
167
168 String result = "";
169 try {
170 result = TKExpressionTag.eval (buf.toString());
171 }
172 catch( Exception e ) {
173 CAT.error( "error in if-expression-tag: ", e );
174 }
175
176 if (result.length() > 0 && !result.equals ("0")) {
177 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
178 return s.apply( td );
179 }
180 if( i == size-2 ) {
181 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
182 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
183 if( endTag.type.equals( "ELSE" ) ) {
184 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
185 return s.apply(td);
186 }
187 }
188 }
189 }
190 Object value = td.getVariable( name );
191 if( value == null ) {
192 int size = subSyntaxes.size();
193 if( size < 2 ) return null;
194 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(size-2);
195 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
196 if( !endTag.type.equals( "ELSE" ) ) return null;
197 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
198 return s.apply( td );
199 }
200
201 if( value instanceof Vector ) {
202 int size = subDefs.size();
203 for( int i=0; i<size; i++ ) {
204 String val = getValue( i, td );
205 Enumeration e = ((TKVector) value).elements();
206 while( e.hasMoreElements() ) {
207 String svalue = e.nextElement().toString();
208 if( val.equalsIgnoreCase( svalue ) ){
209 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
210 return s.apply( td );
211 }
212 }
213 if( i == size-2 ) {
214 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
215 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
216 if( endTag.type.equals( "ELSE" ) ) {
217 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
218 return s.apply(td);
219 }
220 }
221 }
222 }
223 else {
224 String svalue = value.toString();
225
226 int size = subDefs.size();
227 for( int i=0; i<size; i++ ) {
228 String val = getValue( i, td );
229 if( val.equalsIgnoreCase( svalue ) ){
230 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
231 return s.apply( td );
232 }
233 if( i == size-2 ) {
234 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
235 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
236 if( endTag.type.equals( "ELSE" ) ) {
237 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
238 return s.apply(td);
239 }
240 }
241 }
242 }
243 return null;
244 }
245
246
247 public void apply(TKTemplateData td, Writer writer)
248 throws TKTemplateSyntaxException, IOException
249 {
250 String name = getName( td );
251 if( name.equals("EVAL") ) {
252 int size = subDefs.size();
253 for( int i=0; i<size; i++ ) {
254 String expression = getValue( i, td );
255 StringBuffer buf = new StringBuffer ();
256 for (int j = 0; j < expression.length(); j++) {
257
258 char chr = expression.charAt(j);
259 if (chr == '\\')
260 {
261 if (++j >= expression.length()) break;
262 else chr = expression.charAt(j);
263 }
264 buf.append(chr);
265 }
266
267 Eval ev = new Eval();
268 double result = 0;
269 try {
270 result = ev.eval( buf.toString() );
271 }
272 catch( Exception e ) {
273 CAT.error( "error in if-eval-tag: ", e );
274 }
275 if( Math.abs(result) > THRESHOLD ) {
276 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
277 s.apply( td, writer );
278 return;
279 }
280 if( i == size-2 ) {
281 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
282 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
283 if( endTag.type.equals( "ELSE" ) ) {
284 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
285 s.apply(td, writer);
286 return;
287 }
288 }
289 }
290 } else if( name.equals("EXPRESSION") ) {
291 int size = subDefs.size();
292 for( int i=0; i<size; i++ ) {
293 String expression = getValue( i, td );
294 StringBuffer buf = new StringBuffer ();
295 for (int j = 0; j < expression.length(); j++) {
296
297 char chr = expression.charAt(j);
298 if (chr == '\\')
299 {
300 if (++j >= expression.length()) break;
301 else chr = expression.charAt(j);
302 }
303 buf.append(chr);
304 }
305
306 String result = "";
307 try {
308 result = TKExpressionTag.eval (buf.toString());
309 }
310 catch( Exception e ) {
311 CAT.error( "error in if-expression-tag: ", e);
312 }
313
314 if (result.length() > 0 && !result.equals ("0")) {
315 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
316 s.apply( td, writer );
317 return;
318 }
319 if( i == size-2 ) {
320 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
321 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
322 if( endTag.type.equals( "ELSE" ) ) {
323 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
324 s.apply(td, writer);
325 return;
326 }
327 }
328 }
329 }
330 Object value = td.getVariable( name );
331 if( value == null ) {
332 int size = subSyntaxes.size();
333 if(size < 2 )
334 return;
335 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(size-2);
336 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
337 if( !endTag.type.equals( "ELSE" ) )
338 return;
339 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
340 s.apply( td, writer );
341 return;
342 }
343
344 if( value instanceof Vector ) {
345 int size = subDefs.size();
346 for( int i=0; i<size; i++ ) {
347 String val = getValue( i, td );
348 Enumeration e = ((TKVector) value).elements();
349 while( e.hasMoreElements() ) {
350 String svalue = e.nextElement().toString();
351 if( val.equalsIgnoreCase( svalue ) ){
352 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
353 s.apply( td, writer );
354 return;
355 }
356 }
357 if( i == size-2 ) {
358 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
359 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
360 if( endTag.type.equals( "ELSE" ) ) {
361 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
362 s.apply(td, writer);
363 return;
364 }
365 }
366 }
367 }
368 else {
369 String svalue = value.toString();
370
371 int size = subDefs.size();
372 for( int i=0; i<size; i++ ) {
373 String val = getValue( i, td );
374 if( val.equalsIgnoreCase( svalue ) ){
375 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
376 s.apply( td, writer );
377 return;
378 }
379 if( i == size-2 ) {
380 TKTemplateSyntax s = (TKTemplateSyntax) subSyntaxes.get(i);
381 TKEndTag endTag = (TKEndTag) s.tags.lastElement();
382 if( endTag.type.equals( "ELSE" ) ) {
383 s = (TKTemplateSyntax) subSyntaxes.get(size-1);
384 s.apply(td, writer);
385 return;
386 }
387 }
388 }
389 }
390 }
391 }
392
393 |
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