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Library that provides facilities to allow project information to be manipulated in Java and .Net. Supports a range of data formats: Microsoft Project Exchange (MPX), Microsoft Project (MPP,MPT), Microsoft Project Data Interchange (MSPDI XML), Microsoft Project Database (MPD), Planner (XML), Primavera (PM XML, XER, and database), Asta Powerproject (PP, MDB), Asta Easyplan (PP), Phoenix Project Manager (PPX), FastTrack Schedule (FTS), and the Standard Data Exchange Format (SDEF).

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/*
 * file:       MPXJNumberFormat.java
 * author:     Jon Iles
 *             Scott Melville
 * copyright:  (c) Packwood Software 2002-2006
 * date:       15/08/2002
 */

/*
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation; either version 2.1 of the License, or (at your
 * option) any later version.
 *
 * This library 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. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

package net.sf.mpxj.mpx;

import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.ParsePosition;
import java.util.Arrays;

/**
 * This class extends the functionality of the DecimalFormat class
 * for use within MPXJ.
 */
public final class MPXJNumberFormat extends DecimalFormat
{
   /**
    * This method is used to configure the primary and alternative
    * format patterns.
    *
    * @param primaryPattern new format pattern
    * @param alternativePatterns alternative format patterns
    * @param decimalSeparator Locale specific decimal separator to replace placeholder
    * @param groupingSeparator Locale specific grouping separator to replace placeholder
    */
   public void applyPattern(String primaryPattern, String[] alternativePatterns, char decimalSeparator, char groupingSeparator)
   {
      m_symbols.setDecimalSeparator(decimalSeparator);
      m_symbols.setGroupingSeparator(groupingSeparator);

      setDecimalFormatSymbols(m_symbols);
      applyPattern(primaryPattern);

      if (alternativePatterns != null && alternativePatterns.length != 0)
      {
         int loop;
         if (m_alternativeFormats == null || m_alternativeFormats.length != alternativePatterns.length)
         {
            m_alternativeFormats = new DecimalFormat[alternativePatterns.length];
            for (loop = 0; loop < alternativePatterns.length; loop++)
            {
               m_alternativeFormats[loop] = new DecimalFormat();
            }
         }

         for (loop = 0; loop < alternativePatterns.length; loop++)
         {
            m_alternativeFormats[loop].setDecimalFormatSymbols(m_symbols);
            m_alternativeFormats[loop].applyPattern(alternativePatterns[loop]);
         }
      }
   }

   @Override public Number parse(String str, ParsePosition parsePosition)
   {
      Number result = null;

      if (str == null)
      {
         parsePosition.setIndex(-1);
      }
      else
      {
         str = str.trim();

         if (str.isEmpty())
         {
            parsePosition.setIndex(-1);
         }
         else
         {
            result = super.parse(str, parsePosition);
            if (parsePosition.getIndex() == 0)
            {
               result = null;

               if (m_alternativeFormats != null)
               {
                  for (DecimalFormat alternativeFormat : m_alternativeFormats)
                  {
                     result = alternativeFormat.parse(str, parsePosition);
                     if (parsePosition.getIndex() != 0)
                     {
                        break;
                     }
                  }

                  if (parsePosition.getIndex() == 0)
                  {
                     result = null;
                  }
               }
            }
         }
      }

      return (result);
   }

   @Override public int hashCode()
   {
      final int prime = 31;
      int result = super.hashCode();
      result = prime * result + Arrays.hashCode(m_alternativeFormats);
      result = prime * result + ((m_symbols == null) ? 0 : m_symbols.hashCode());
      return result;
   }

   @Override public boolean equals(Object obj)
   {
      if (this == obj)
      {
         return true;
      }

      if (!super.equals(obj))
      {
         return false;
      }

      if (getClass() != obj.getClass())
      {
         return false;
      }

      MPXJNumberFormat other = (MPXJNumberFormat) obj;
      if (!Arrays.equals(m_alternativeFormats, other.m_alternativeFormats))
      {
         return false;
      }

      if (m_symbols == null)
      {
         return other.m_symbols == null;
      }

      return m_symbols.equals(other.m_symbols);
   }

   /**
    * Number formatter.
    */
   private final DecimalFormatSymbols m_symbols = new DecimalFormatSymbols();
   private DecimalFormat[] m_alternativeFormats;
}