/*

  * Copyright 2010 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.osedu.org/licenses/ECL-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.kuali.student.contract.writer;

 /**

  *

  * @author nwright

  */

 public class JavaEnumConstantCalculator

 {

  private String name;

  public JavaEnumConstantCalculator (String name)

  {

   this.name = name;

  }

  public String calc ()

  {

   StringBuilder buf = new StringBuilder (name.length () + 3);

   // do the first character so we don't prepend the first with a _ if it is upper

   char c = Character.toUpperCase (name.charAt (0));

   buf.append (c);

   boolean lastUpper = Character.isUpperCase (c);

   for (int i = 1; i < name.length (); i ++)

   {

    c = name.charAt (i);

    if (Character.isUpperCase (c))

    {

     if ( ! lastUpper)

     {

      buf.append ('_');

     }

     lastUpper = true;

    }

    else

    {

     lastUpper = false;

    }

    buf.append (Character.toUpperCase (c));

   }

   return buf.toString ();

  }

  public String reverse ()

  {

   StringBuffer buf = new StringBuffer (name.length ());

   boolean uppercase = true;

   for (int i = 0; i < name.length (); i ++)

   {

    char c = name.charAt (i);

    if (uppercase)

    {

     c = Character.toUpperCase (c);

     uppercase = false;

    }

    else

    {

     c = Character.toLowerCase (c);

    }

    if (c == '_')

    {

     uppercase = true;

     continue;

    }

    buf.append (c);

   }

   return buf.toString ();

  }

 }