org.apache.batik.svggen.SVGIDGenerator Maven / Gradle / Ivy
/*
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.batik.svggen;
import java.util.HashMap;
import java.util.Map;
/**
* Generates id for an arbitrary number of prefix
*
* @author Christophe Jolif
* @author Vincent Hardy
* @version $Id: SVGIDGenerator.java 1805408 2017-08-18 12:21:52Z ssteiner $
*/
public class SVGIDGenerator {
private Map prefixMap = new HashMap();
public SVGIDGenerator() {
}
/**
* Generates an id for the given prefix. This class keeps
* track of all invocations to that it generates unique ids
*
* @param prefix defines the prefix for which the id should
* be generated.
* @return a value of the form <prefix><n>
*/
public String generateID(String prefix) {
Integer maxId = (Integer)prefixMap.get(prefix);
if (maxId == null) {
maxId = 0;
prefixMap.put(prefix, maxId);
}
maxId = maxId + 1;
prefixMap.put(prefix, maxId);
return prefix + maxId;
}
}