io.netty.handler.codec.http.CaseIgnoringComparator Maven / Gradle / Ivy

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/*
 * Copyright 2011 The Netty Project
 *
 * The Netty Project 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 io.netty.handler.codec.http;

import java.io.Serializable;
import java.util.Comparator;

final class CaseIgnoringComparator implements Comparator, Serializable {

    private static final long serialVersionUID = 4582133183775373862L;

    static final CaseIgnoringComparator INSTANCE = new CaseIgnoringComparator();

    private CaseIgnoringComparator() {
    }

    @Override
    public int compare(String o1, String o2) {
        return o1.compareToIgnoreCase(o2);
    }

    private Object readResolve() {
        return INSTANCE;
    }
}