1   /* Copyright 2024-2025 The Johns Hopkins University Applied Physics Laboratory
2    * Licensed to CS GROUP (CS) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *   http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.orekit.files.iirv.terms;
18  
19  import org.orekit.files.iirv.terms.base.StringValuedIIRVTerm;
20  
21  /**
22   * 1-character source of the message (Default = "0").
23   *
24   * @author Nick LaFarge
25   * @since 13.0
26   */
27  public class MessageSourceTerm extends StringValuedIIRVTerm {
28  
29      /** Default value for the message source is "0". */
30      public static final MessageSourceTerm DEFAULT = new MessageSourceTerm("0");
31  
32      /** The length of the message source term within the IIRV vector. */
33      public static final int MESSAGE_SOURCE_TERM_LENGTH = 1;
34  
35      /** Regular expression that ensures the validity of string values for this term. */
36      public static final String MESSAGE_SOURCE_TERM_PATTERN = "[0-9A-Za-z ]";
37  
38      /**
39       * Constructor.
40       * <p>
41       * See {@link StringValuedIIRVTerm#StringValuedIIRVTerm(String, String, int)}
42       *
43       * @param value value of message source term
44       */
45      public MessageSourceTerm(final String value) {
46          super(MESSAGE_SOURCE_TERM_PATTERN, value, MESSAGE_SOURCE_TERM_LENGTH);
47      }
48  }