/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache 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.apache.org/licenses/LICENSE-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.apache.myfaces.shared.renderkit.html.util;

 import java.util.Map;

 import javax.faces.context.FacesContext;

 public class SharedStringBuilder

 {

     public static StringBuilder get(String stringBuilderKey)

     {

         return get(FacesContext.getCurrentInstance(), stringBuilderKey);

     }

     // TODO checkstyle complains; does this have to lead with __ ?

     public static StringBuilder get(FacesContext facesContext, String stringBuilderKey)

     {

         Map<Object, Object> attributes = facesContext.getAttributes();

         StringBuilder sb = (StringBuilder) attributes.get(stringBuilderKey);

         if (sb == null)

         {

             sb = new StringBuilder();

             attributes.put(stringBuilderKey, sb);

         }

         else

         {

             // clear out the stringBuilder by setting the length to 0

             sb.setLength(0);

         }

         return sb;

     }

     public static StringBuilder get(FacesContext facesContext, String stringBuilderKey, int initialSize)

     {

         Map<Object, Object> attributes = facesContext.getAttributes();

         StringBuilder sb = (StringBuilder) attributes.get(stringBuilderKey);

         if (sb == null)

         {

             sb = new StringBuilder(initialSize);

             attributes.put(stringBuilderKey, sb);

         }

         else

         {

             // clear out the stringBuilder by setting the length to 0

             sb.setLength(0);

         }

         return sb;

     }

 }