/*

  * 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.commons.transaction.file;

 import java.io.UnsupportedEncodingException;

 import java.net.URLEncoder;

 import org.apache.commons.codec.binary.Base64;

 /**

  * URL encodes a resource.

  *

  * @version $Id: URLEncodeIdMapper.java 493628 2007-01-07 01:42:48Z joerg $

  * @since 1.1

  */

 public class URLEncodeIdMapper implements ResourceIdToPathMapper {

     public String getPathForId(Object resourceId) {

         String path = resourceId.toString();

         try {

             // XXX weired replacement for the fine JDK1.4 URLEncoder.encode(path, "UTF-8") 

             // method 

             // using this combination as a simple URLEncoder.encode without

             // charset may fail depending on local settings

             // for this reason the string will be encoded into base64 consisting

             // of ascii characters only

             // a further URL encoding is need as base64 might contain '/' which

             // might be a problem for some file systems 

             path = new String(Base64.encodeBase64(path.getBytes("UTF-8")), "ASCII");

             path = URLEncoder.encode(path);

         } catch (UnsupportedEncodingException e) {

             // we know this will not happen

         }

         return path;

     }

 }