1   /*
2    * Copyright 2017 LINE Corporation
3    *
4    * LINE Corporation 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    *   https://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 com.linecorp.centraldogma.common;
17  
18  import static com.google.common.base.Strings.isNullOrEmpty;
19  
20  import javax.annotation.Nullable;
21  
22  import com.google.common.base.Ascii;
23  
24  /**
25   * The markup language of a {@link Commit} message.
26   */
27  public enum Markup {
28      /**
29       * Unknown markup language.
30       */
31      UNKNOWN,
32      /**
33       * Plaintext.
34       */
35      PLAINTEXT,
36      /**
37       * Markdown.
38       */
39      MARKDOWN;
40  
41      private final String nameLowercased;
42  
43      Markup() {
44          nameLowercased = Ascii.toLowerCase(name());
45      }
46  
47      /**
48       * Returns the lower-cased name.
49       */
50      public String nameLowercased() {
51          return nameLowercased;
52      }
53  
54      /**
55       * Returns a {@link Markup} from the specified {@code value}. If none of markup is matched,
56       * this will return {@link #UNKNOWN}.
57       */
58      public static Markup parse(@Nullable String value) {
59          if (isNullOrEmpty(value)) {
60              return UNKNOWN;
61          }
62  
63          final String markup = Ascii.toUpperCase(value);
64  
65          if ("PLAINTEXT".equalsIgnoreCase(markup)) {
66              return PLAINTEXT;
67          }
68  
69          if ("MARKDOWN".equalsIgnoreCase(markup)) {
70              return MARKDOWN;
71          }
72  
73          return UNKNOWN;
74      }
75  }