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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.log4j.pattern;

import org.apache.log4j.Layout;
import org.apache.log4j.spi.LoggingEvent;

/**
 * Formats a line separator.
 *
 * @author Ceki Gülcü
 */
public final class LineSeparatorPatternConverter extends LoggingEventPatternConverter {
    /**
     * Singleton.
     */
    private static final LineSeparatorPatternConverter INSTANCE = new LineSeparatorPatternConverter();

    /**
     * Line separator.
     */
    private final String lineSep;

    /**
     * Private constructor.
     */
    private LineSeparatorPatternConverter() {
	super("Line Sep", "lineSep");
	lineSep = Layout.LINE_SEP;
    }

    /**
     * Obtains an instance of pattern converter.
     * 
     * @param options options, may be null.
     * @return instance of pattern converter.
     */
    public static LineSeparatorPatternConverter newInstance(final String[] options) {
	return INSTANCE;
    }

    /**
     * {@inheritDoc}
     */
    public void format(LoggingEvent event, final StringBuffer toAppendTo) {
	toAppendTo.append(lineSep);
    }

    /**
     * {@inheritDoc}
     */
    public void format(final Object obj, final StringBuffer toAppendTo) {
	toAppendTo.append(lineSep);
    }
}