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/*
 * Copyright 2012 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.rtsp;

import io.netty.handler.codec.http.HttpVersion;
import io.netty.util.internal.ObjectUtil;

/**
 * The version of RTSP.
 */
public final class RtspVersions {

    /**
     * RTSP/1.0
     */
    public static final HttpVersion RTSP_1_0 = new HttpVersion("RTSP", 1, 0, true);

    /**
     * Returns an existing or new {@link HttpVersion} instance which matches to
     * the specified RTSP version string.  If the specified {@code text} is
     * equal to {@code "RTSP/1.0"}, {@link #RTSP_1_0} will be returned.
     * Otherwise, a new {@link HttpVersion} instance will be returned.
     */
    public static HttpVersion valueOf(String text) {
        ObjectUtil.checkNotNull(text, "text");

        text = text.trim().toUpperCase();
        if ("RTSP/1.0".equals(text)) {
            return RTSP_1_0;
        }

        return new HttpVersion(text, true);
    }

    private RtspVersions() {
    }
}