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package com.hfg.util.io;

import com.hfg.util.StringUtil;

import java.io.IOException;
import java.io.Reader;
import java.util.List;

//------------------------------------------------------------------------------
/**
 Utility to help in parsing CSV (comma-separated value) files.
 
 @author J. Alex Taylor, hairyfatguy.com
 
 */
//------------------------------------------------------------------------------
// com.hfg Library
//
// 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
//
// J. Alex Taylor, President, Founder, CEO, COO, CFO, OOPS hairyfatguy.com
// [email protected]
//------------------------------------------------------------------------------

public class CSV
{
   private static DelimitedTextParser sParser = new DelimitedTextParser(',');

   //###########################################################################
   // PUBLIC FUNCTIONS
   //###########################################################################

   //---------------------------------------------------------------------------
   public static String writeField(String inField)
   {
      return StringUtil.isSet(inField) ? escapeField(inField) : "";
   }

   //---------------------------------------------------------------------------
   public static String writeField(Number inField)
   {
      return inField != null ? inField.toString() : "";
   }

   //---------------------------------------------------------------------------
   public static String writeField(Number inField, String inFormatString)
   {
      return inField != null ? String.format(inFormatString, inField) : "";
   }

   //---------------------------------------------------------------------------
   public static String writeField(Boolean inField)
   {
      return inField != null ? inField.toString() : "";
   }

   //---------------------------------------------------------------------------
   public static String escapeField(String inField)
   {
      return sParser.escapeField(inField);
   }

   //---------------------------------------------------------------------------
   public static List parse(Reader inReader)
         throws IOException
   {
      return sParser.parse(inReader);
   }

   //---------------------------------------------------------------------------
   public static String[] parseLine(String inLine)
         throws IOException
   {
      return sParser.parseLine(inLine);
   }
}