001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *        http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 */
019package org.apache.isis.core.commons.url;
020
021import java.io.UnsupportedEncodingException;
022import java.net.URLDecoder;
023import java.net.URLEncoder;
024
025import com.google.common.base.Charsets;
026import com.google.common.base.Function;
027
028public final class UrlEncodingUtils {
029
030    public final static Function<String, String> FUNCTION = new Function<String, String>() {
031
032        @Override
033        public String apply(final String input) {
034            try {
035                return URLDecoder.decode(input, "UTF-8");
036            } catch (final UnsupportedEncodingException e) {
037                return "";
038            }
039        }
040    };
041
042    private UrlEncodingUtils() {
043    }
044
045    public static String urlDecode(final String string) {
046        return FUNCTION.apply(string);
047    }
048
049    public static String urlEncode(final String str) {
050        try {
051            return URLEncoder.encode(str, Charsets.UTF_8.name());
052        } catch (final UnsupportedEncodingException e) {
053            // shouldn't happen
054            throw new RuntimeException(e);
055        }
056    }
057
058}