// Copyright 2009 The Apache Software Foundation

 //

 // Licensed under the Apache License, Version 2.0 (the "License");

 // you may not use this file except in compliance with the License.

 // You may obtain a copy of the License at

 //

 //     http://www.apache.org/licenses/LICENSE-2.0

 //

 // Unless required by applicable law or agreed to in writing, software

 // distributed under the License is distributed on an "AS IS" BASIS,

 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 // See the License for the specific language governing permissions and

 // limitations under the License.

 package org.apache.tapestry5.internal.translator;

 import java.text.DecimalFormatSymbols;

 import java.text.ParseException;

 /**

  * Base class for parsing/formatting BigInteger and BigDecimal.

  *

  * @since 5.1.0.1

  */

 public abstract class BigTypesFormatter implements NumericFormatter

 {

     protected final DecimalFormatSymbols symbols;

     public BigTypesFormatter(DecimalFormatSymbols symbols)

     {

         this.symbols = symbols;

     }

     protected String toString(char ch)

     {

         return String.valueOf(ch);

     }

     public String toClient(Number value)

     {

         String normal = value.toString();

         // When formatting integers, we don't use the grouping seperator.

         return normal.replace('-', symbols.getMinusSign()).replace('.', symbols.getDecimalSeparator());

     }

     public Number parse(String clientValue) throws ParseException

     {

         String noGroups = clientValue.replace(toString(symbols.getGroupingSeparator()), "");

         String fixedNeg = noGroups.replace(symbols.getMinusSign(), '-');

         String fixedDec = fixedNeg.replace(symbols.getDecimalSeparator(), '.');

         try

         {

             return parseConvertedValue(fixedDec);

         }

         catch (NumberFormatException ex)

         {

             throw new ParseException(ex.getMessage(), 0);

         }

     }

     protected abstract Number parseConvertedValue(String converted);

 }