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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package ch.qos.logback.core.util;
15  
16  /**
17   * Various utility methods for processing strings representing context types.
18   * 
19   * @author Ceki Gulcu
20   * 
21   */
22  public class ContentTypeUtil {
23  
24      public static boolean isTextual(String contextType) {
25          if (contextType == null) {
26              return false;
27          }
28          return contextType.startsWith("text");
29      }
30  
31      public static String getSubType(String contextType) {
32          if (contextType == null) {
33              return null;
34          }
35          int index = contextType.indexOf('/');
36          if (index == -1) {
37              return null;
38          } else {
39              int subTypeStartIndex = index + 1;
40              if (subTypeStartIndex < contextType.length()) {
41                  return contextType.substring(subTypeStartIndex);
42              } else {
43                  return null;
44              }
45          }
46      }
47  }