/*
* 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.pdfbox.util;
import java.util.Map;
/**
* This class with handle some simple Map operations.
*
* @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
* @version $Revision: 1.2 $
*/
public class MapUtil
{
private MapUtil()
{
//utility class
}
/**
* Generate a unique key for the map based on a prefix.
*
* @param map The map to look for existing keys.
* @param prefix The prefix to use when generating the key.
* @return The new unique key that does not currently exist in the map.
*/
public static final String getNextUniqueKey( Map map, String prefix )
{
int counter = 0;
while( map.get( prefix+counter ) != null )
{
counter++;
}
return prefix+counter;
}
}