/**

  *  @author : Paul Taylor

  *  @author : Eric Farng

  *

  *  Version @version:$Id: AbstractTagDisplayFormatter.java,v 1.5 2008/07/21 10:46:14 paultaylor Exp $

  *

  *  MusicTag Copyright (C)2003,2004

  *

  *  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,

  *  you can get a copy from http://www.opensource.org/licenses/lgpl-license.php or write to the Free Software

  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

  *

  * Description:

  *  This abstract class defines methods for writing out the contents of a tag in a user-friendly way

  * Concrete subclasses could implement different versions such as XML Output, PDF and so on. The tag

  * in all cases is diaplyed as a sort of tree hierachy.

  */

 package org.jaudiotagger.logging;

 import java.util.HashMap;

 /**

  * Abstract class that provides structure to use for displaying a files metadata content

  */

 public abstract class AbstractTagDisplayFormatter

 {

     protected int level;

     private static HashMap<String, String> hexBinaryMap = new HashMap<String, String>();

     public abstract void openHeadingElement(String type, String value);

     public abstract void openHeadingElement(String type, boolean value);

     public abstract void openHeadingElement(String type, int value);

     public abstract void closeHeadingElement(String type);

     public abstract void addElement(String type, String value);

     public abstract void addElement(String type, int value);

     public abstract void addElement(String type, boolean value);

     public abstract String toString();

     /**

      * Use to display headers as their binary representation

      */

     public static String displayAsBinary(byte buffer)

     {

         //Convert buffer to hex representation

         String hexValue = Integer.toHexString(buffer);

         String char1 = "";

         String char2 = "";

         try

         {

             if (hexValue.length() == 8)

             {

                 char1 = hexValue.substring(6, 7);

                 char2 = hexValue.substring(7, 8);

             }

             else if (hexValue.length() == 2)

             {

                 char1 = hexValue.substring(0, 1);

                 char2 = hexValue.substring(1, 2);

             }

             else if (hexValue.length() == 1)

             {

                 char1 = "0";

                 char2 = hexValue.substring(0, 1);

             }

         }

         catch (StringIndexOutOfBoundsException se)

         {

             return "";

         }

         return hexBinaryMap.get(char1) + hexBinaryMap.get(char2);

     }

     static

     {

         hexBinaryMap.put("0", "0000");

         hexBinaryMap.put("1", "0001");

         hexBinaryMap.put("2", "0010");

         hexBinaryMap.put("3", "0011");

         hexBinaryMap.put("4", "0100");

         hexBinaryMap.put("5", "0101");

         hexBinaryMap.put("6", "0110");

         hexBinaryMap.put("7", "0111");

         hexBinaryMap.put("8", "1000");

         hexBinaryMap.put("9", "1001");

         hexBinaryMap.put("a", "1010");

         hexBinaryMap.put("b", "1011");

         hexBinaryMap.put("c", "1100");

         hexBinaryMap.put("d", "1101");

         hexBinaryMap.put("e", "1110");

         hexBinaryMap.put("f", "1111");

     }

 }