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1
29
30 package com.caucho.jstl.el;
31
32 import com.caucho.el.Expr;
33 import com.caucho.jsp.PageContextImpl;
34 import com.caucho.util.L10N;
35
36 import javax.el.ELContext;
37 import javax.el.ELException;
38 import javax.servlet.jsp.JspException  ;
39 import javax.servlet.jsp.JspWriter ;
40 import javax.servlet.jsp.tagext.BodyTagSupport ;
41 import java.io.IOException ;
42 import java.text.DecimalFormat ;
43 import java.text.NumberFormat ;
44 import java.text.ParseException ;
45 import java.util.Locale ;
46
47
50 public class ParseNumberTag extends BodyTagSupport {
51 private static L10N L = new L10N(ParseNumberTag.class);
52
53 private Expr _valueExpr;
54 private Expr _typeExpr;
55
56 private Expr _patternExpr;
57
58 private Expr _parseLocaleExpr;
59 private Expr _integerOnlyExpr;
60
61 private String _var;
62 private String _scope;
63
64
69 public void setValue(Expr value)
70 {
71 _valueExpr = value;
72 }
73
74
79 public void setType(Expr type)
80 {
81 _typeExpr = type;
82 }
83
84
89 public void setPattern(Expr pattern)
90 {
91 _patternExpr = pattern;
92 }
93
94
99 public void setParseLocale(Expr locale)
100 {
101 _parseLocaleExpr = locale;
102 }
103
104
109 public void setIntegerOnly(Expr integerOnly)
110 {
111 _integerOnlyExpr = integerOnly;
112 }
113
114
119 public void setVar(String var)
120 {
121 _var = var;
122 }
123
124
129 public void setScope(String scope)
130 {
131 _scope = scope;
132 }
133
134
137 public int doEndTag()
138 throws JspException
139 {
140 try {
141 PageContextImpl pageContext = (PageContextImpl) this.pageContext;
142
143 JspWriter out = pageContext.getOut();
144
145 NumberFormat format = getFormat();
146
147 String string;
148
149 if (_valueExpr != null)
150 string = _valueExpr.evalString(pageContext.getELContext());
151 else
152 string = bodyContent.getString().trim();
153
154 Number value = format.parse(string);
155
156 if (_var == null)
157 out.print(value);
158 else
159 CoreSetTag.setValue(pageContext, _var, _scope, value);
160 } catch (IOException e) {
161 } catch (ParseException e) {
162 throw new JspException (e);
163 } catch (ELException e) {
164 throw new JspException (e);
165 }
166
167 return EVAL_PAGE;
168 }
169
170 protected NumberFormat getFormat()
171 throws JspException , ELException
172 {
173 PageContextImpl pageContext = (PageContextImpl) this.pageContext;
174 ELContext env = pageContext.getELContext();
175
176 NumberFormat format = null;
177
178 Locale locale = null;
179
180 if (_parseLocaleExpr != null) {
181 Object localeObj = _parseLocaleExpr.evalObject(env);
182
183 if (localeObj instanceof Locale )
184 locale = (Locale ) localeObj;
185 else if (localeObj instanceof String )
186 locale = pageContext.getLocale((String ) localeObj, null);
187 }
188
189 if (locale == null)
190 locale = pageContext.getLocale();
191
192 String type = null;
193 if (_typeExpr != null)
194 type = _typeExpr.evalString(env);
195
196 if (type == null || type.equals("") || type.equals("number")) {
197 if (locale != null)
198 format = NumberFormat.getInstance(locale);
199 else
200 format = NumberFormat.getInstance();
201
202 DecimalFormat decimalFormat = (DecimalFormat ) format;
203
204 if (_patternExpr != null)
205 decimalFormat.applyPattern(_patternExpr.evalString(env));
206 }
207 else if (type.equals("percent")) {
208 if (locale != null)
209 format = NumberFormat.getPercentInstance(locale);
210 else
211 format = NumberFormat.getPercentInstance();
212 }
213 else if (type.equals("currency")) {
214 if (locale != null)
215 format = NumberFormat.getCurrencyInstance(locale);
216 else
217 format = NumberFormat.getCurrencyInstance(locale);
218 }
219 else
220 throw new JspException (L.l("unknown formatNumber type `{0}'",
221 type));
222
223 if (_integerOnlyExpr != null)
224 format.setParseIntegerOnly(_integerOnlyExpr.evalBoolean(env));
225
226 return format;
227 }
228 }
229 |
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