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1
5 package com.teamkonzept.lib.templates;
6
7 import java.io.*;
8
9 import com.oroinc.text.regex.*;
10 import org.apache.log4j.Category;
11 import com.teamkonzept.lib.*;
12 import com.teamkonzept.lib.math.*;
13
14 public class TKWhileTag extends TKLabelTag
15 {
16 private static final Category cat = Category.getInstance(TKWhileTag.class);
17
18 public static final int TAG_TYPE = TKExpressionTag.TAG_TYPE+1;
19 public TKTemplateSyntax listText;
20
21
25 public TKWhileTag(
26 TKTemplateSyntax parent,
27 String  def,
28 PatternMatcherInput matcherInput,
29 boolean hasSubTags
30 ) throws TKTemplateSyntaxException
31 {
32 super( parent, def, hasSubTags );
33 try {
34 listText = parent.newChild( matcherInput, parent.getSource() );
35 }
36 catch (ArrayIndexOutOfBoundsException e) { throw new TKTemplateSyntaxException(parent.getSource(),"NOEND","WHILE", def);
38 }
39 checkError(listText,"WHILE", def);
40 }
41
42
43
47 public String apply( TKTemplateData td ) throws TKTemplateSyntaxException
48 {
49 StringBuffer result = new StringBuffer ();
50 Eval ev = new Eval();
51 try {
52 do {
53 String expression = getLabel( td );
54 if( Math.abs( ev.eval( expression )) > 0.00001 ) {
55 result.append( listText.apply( td ) );
56 }
57 else {
58 break;
59 }
60 } while( true );
61 }
62 catch( Exception e ) {
63 cat.error( "error in while-tag: ",e);
64 }
65 return result.toString();
66 }
67
68
69 public void apply(TKTemplateData td, Writer writer)
70 throws TKTemplateSyntaxException, IOException
71 {
72 StringBuffer result = new StringBuffer ();
73 Eval ev = new Eval();
74 try {
75 do {
76 String expression = getLabel( td );
77 if( Math.abs( ev.eval( expression )) > 0.00001 ) {
78 result.append( listText.apply( td ) );
79 }
80 else {
81 break;
82 }
83 } while( true );
84 }
85 catch( Exception e ) {
86 cat.error( "error in while-tag: ", e );
87 }
88 writer.write(result.toString());
89 }
90
91 }
92
93 |
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