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    1   /*
    2    * Copyright 2012 The Netty Project
    3    *
    4    * The Netty Project licenses this file to you under the Apache License,
    5    * version 2.0 (the "License"); you may not use this file except in compliance
    6    * with the License. You may obtain a copy of the License at:
    7    *
    8    *   http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
    12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
    13   * License for the specific language governing permissions and limitations
    14   * under the License.
    15   */
    16  package org.jboss.netty.handler.codec.rtsp;
    17
    18  import org.jboss.netty.handler.codec.http.HttpVersion;
    19
    20  /**
    21   * The version of RTSP.
    22   * @apiviz.exclude
    23   */
    24  public final class RtspVersions {
    25
    26      /**
    27       * RTSP/1.0
    28       */
    29      public static final HttpVersion RTSP_1_0 = new HttpVersion("RTSP", 1, 0, true);
    30
    31      /**
    32       * Returns an existing or new {@link HttpVersion} instance which matches to
    33       * the specified RTSP version string.  If the specified {@code text} is
    34       * equal to {@code "RTSP/1.0"}, {@link #RTSP_1_0} will be returned.
    35       * Otherwise, a new {@link HttpVersion} instance will be returned.
    36       */
    37      public static HttpVersion valueOf(String text) {
    38          if (text == null) {
    39              throw new NullPointerException("text");
    40          }
    41
    42          text = text.trim().toUpperCase();
    43          if (text.equals("RTSP/1.0")) {
    44              return RTSP_1_0;
    45          }
    46
    47          return new HttpVersion(text, true);
    48      }
    49
    50      private RtspVersions() {
    51          super();
    52      }
    53  }