/*

  * 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();

     }

 }