/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jstl.rt;
import com.caucho.jsp.PageContextImpl;
import com.caucho.util.L10N;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyTagSupport;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.Locale;
/**
* Looks up an i18n message from a bundle and prints it.
*/
public class FmtParseNumberTag extends BodyTagSupport {
private static L10N L = new L10N(FmtParseNumberTag.class);
private String _value;
private String _type;
private String _pattern;
private Object _parseLocale;
private boolean _integerOnly = false;
private String _var;
private String _scope;
/**
* Sets the formatting value.
*
* @param value the value.
*/
public void setValue(String value)
{
_value = value;
}
/**
* Sets the formatting type.
*
* @param type the type.
*/
public void setType(String type)
{
_type = type;
}
/**
* Sets the number pattern.
*
* @param pattern the number pattern.
*/
public void setPattern(String pattern)
{
_pattern = pattern;
}
/**
* Sets the parse locale
*
* @param locale the locale
*/
public void setParseLocale(Object locale)
{
_parseLocale = locale;
}
/**
* Sets true if integer only parsing.
*
* @param integerOnly the JSP-EL expression for the number pattern.
*/
public void setIntegerOnly(boolean integerOnly)
{
_integerOnly = integerOnly;
}
/**
* Sets the variable name.
*
* @param var the variable name to store the value in.
*/
public void setVar(String var)
{
_var = var;
}
/**
* Sets the variable scope.
*
* @param scope the variable scope to store the value in.
*/
public void setScope(String scope)
{
_scope = scope;
}
/**
* Process the tag.
*/
public int doEndTag()
throws JspException
{
try {
PageContextImpl pc = (PageContextImpl) pageContext;
JspWriter out = pc.getOut();
NumberFormat format = getFormat();
String string;
if (_value != null)
string = _value;
else if (bodyContent != null)
string = bodyContent.getString().trim();
else
string = null;
Number value = null;
if (string != null && ! "".equals(string))
value = format.parse(string);
if (_var == null) {
if (_scope != null)
throw new JspException(L.l("fmt:parseNumber var must not be null when scope '{0}' is set.",
_scope));
if (value != null)
out.print(value);
}
else
CoreSetTag.setValue(pageContext, _var, _scope, value);
} catch (IOException e) {
} catch (ParseException e) {
throw new JspException(e);
}
return EVAL_PAGE;
}
protected NumberFormat getFormat()
throws JspException
{
PageContextImpl pc = (PageContextImpl) pageContext;
NumberFormat format = null;
Locale locale = null;
if (_parseLocale != null) {
Object localeObj = _parseLocale;
if (localeObj instanceof Locale)
locale = (Locale) localeObj;
else if (localeObj instanceof String)
locale = pc.getLocale((String) localeObj, null);
}
if (locale == null)
locale = pc.getLocale();
if (_type == null || _type.equals("") || _type.equals("number")) {
if (locale != null)
format = NumberFormat.getInstance(locale);
else
format = NumberFormat.getInstance();
}
else if (_type.equals("percent")) {
if (locale != null)
format = NumberFormat.getPercentInstance(locale);
else
format = NumberFormat.getPercentInstance();
}
else if (_type.equals("currency")) {
if (locale != null)
format = NumberFormat.getCurrencyInstance(locale);
else
format = NumberFormat.getCurrencyInstance(locale);
}
else
throw new JspException(L.l("unknown formatNumber type `{0}'", _type));
if (_pattern != null) {
DecimalFormat decimalFormat = (DecimalFormat) format;
decimalFormat.applyPattern(_pattern);
}
format.setParseIntegerOnly(_integerOnly);
return format;
}
}