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The Pax Logging API Library is to allow for the Pax Logging Service to be reloaded without stopping the many dependent bundles. It also contains the OSGi Log Service API and the Knopflerfish Log API.

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/*
 * 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.logging.log4j.util;

import java.util.Locale;

/**
 * Consider this class private.
 * 
 * 
 * Helps convert English Strings to English Enum values.
 * 
 * 
 * Enum name arguments are converted internally to upper case with the {@linkplain Locale#ENGLISH ENGLISH} locale to
 * avoid problems on the Turkish locale. Do not use with Turkish enum values.
 * 
 */
public final class EnglishEnums {

    private EnglishEnums() {
    }

    /**
     * Returns the Result for the given string.
     * 
     * The {@code name} is converted internally to upper case with the {@linkplain Locale#ENGLISH ENGLISH} locale to
     * avoid problems on the Turkish locale. Do not use with Turkish enum values.
     * 
     *
     * @param enumType The Class of the enum.
     * @param name The enum name, case-insensitive. If null, returns {@code defaultValue}.
     * @param  The type of the enum.
     * @return an enum value or null if {@code name} is null.
     */
    public static > T valueOf(final Class enumType, final String name) {
        return valueOf(enumType, name, null);
    }

    /**
     * Returns an enum value for the given string.
     * 
     * The {@code name} is converted internally to upper case with the {@linkplain Locale#ENGLISH ENGLISH} locale to
     * avoid problems on the Turkish locale. Do not use with Turkish enum values.
     * 
     *
     * @param name The enum name, case-insensitive. If null, returns {@code defaultValue}.
     * @param enumType The Class of the enum.
     * @param defaultValue the enum value to return if {@code name} is null.
     * @param  The type of the enum.
     * @return an enum value or {@code defaultValue} if {@code name} is null.
     */
    public static > T valueOf(final Class enumType, final String name, final T defaultValue) {
        return name == null ? defaultValue : Enum.valueOf(enumType, name.toUpperCase(Locale.ENGLISH));
    }

}