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The Apache Log4j Implementation

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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.core.pattern;


import org.apache.logging.log4j.util.PerformanceSensitive;

/**
 * Abstract base class for other pattern converters which can return only parts of their name.
 */
@PerformanceSensitive("allocation")
public abstract class NamePatternConverter extends LogEventPatternConverter {
    /**
     * Abbreviator.
     */
    private final NameAbbreviator abbreviator;

    /**
     * Constructor.
     *
     * @param name    name of converter.
     * @param style   style name for associated output.
     * @param options options, may be null, first element will be interpreted as an abbreviation pattern.
     */
    protected NamePatternConverter(final String name, final String style, final String[] options) {
        super(name, style);

        if (options != null && options.length > 0) {
            abbreviator = NameAbbreviator.getAbbreviator(options[0]);
        } else {
            abbreviator = NameAbbreviator.getDefaultAbbreviator();
        }
    }

    /**
     * Abbreviate name in string buffer.
     *
     * @param original string containing name.
     * @param destination the StringBuilder to write to
     * @return The abbreviated name.
     */
    protected final void abbreviate(final String original, final StringBuilder destination) {
        abbreviator.abbreviate(original, destination);
    }
}