001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements. See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache license, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License. You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the license for the specific language governing permissions and
015     * limitations under the license.
016     */
017    package org.apache.logging.log4j.core.config.plugins.convert;
018    
019    import org.apache.logging.log4j.util.EnglishEnums;
020    
021    /**
022     * Converts a {@link String} into a {@link Enum}. Returns {@code null} for invalid enum names.
023     *
024     * @param <E> the enum class to parse.
025     * @since 2.1 moved from TypeConverters
026     */
027    public class EnumConverter<E extends Enum<E>> implements TypeConverter<E> {
028        private final Class<E> clazz;
029    
030        public EnumConverter(final Class<E> clazz) {
031            this.clazz = clazz;
032        }
033    
034        @Override
035        public E convert(final String s) {
036            return EnglishEnums.valueOf(clazz, s);
037        }
038    }