/*

  *   SONEWS News Server

  *   see AUTHORS for the list of contributors

  *

  *   This program is free software: you can redistribute it and/or modify

  *   it under the terms of the GNU General Public License as published by

  *   the Free Software Foundation, either version 3 of the License, or

  *   (at your option) any later version.

  *

  *   This program 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 General Public License for more details.

  *

  *   You should have received a copy of the GNU General Public License

  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

  */

 package org.sonews.util;

 import java.util.HashMap;

 import java.util.Map;

 /**

  * Class that allows simple String template handling.

  * @author Christian Lins

  * @since sonews/0.5.0

  */

 public class StringTemplate 

 {

   private String              str               = null;

   private String              templateDelimiter = "%";

   private Map<String, String> templateValues    = new HashMap<String, String>();

   public StringTemplate(String str, final String templateDelimiter)

   {

     if(str == null || templateDelimiter == null)

     {

       throw new IllegalArgumentException("null arguments not allowed");

     }

     this.str               = str;

     this.templateDelimiter = templateDelimiter;

   }

   public StringTemplate(String str)

   {

     this(str, "%");

   }

   public StringTemplate set(String template, String value)

   {

     if(template == null || value == null)

     {

       throw new IllegalArgumentException("null arguments not allowed");

     }

     this.templateValues.put(template, value);

     return this;

   }

   public StringTemplate set(String template, long value)

   {

     return set(template, Long.toString(value));

   }

   public StringTemplate set(String template, double value)

   {

     return set(template, Double.toString(value));

   }

   public StringTemplate set(String template, Object obj)

   {

     if(template == null || obj == null)

     {

       throw new IllegalArgumentException("null arguments not allowed");

     }

     return set(template, obj.toString());

   }

   @Override

   public String toString()

   {

     String ret = str;

     for(String key : this.templateValues.keySet())

     {

       String value = this.templateValues.get(key);

       ret = ret.replace(templateDelimiter + key, value);

     }

     return ret;

   }

 }