1 /*
2 * Copyright 1999-2001,2004 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * 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,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.apache.commons.workflow.util;
18
19
20 /**
21 * General purpose static utility methods for the Workflow engine.
22 *
23 * @version $Revision: 155475 $ $Date: 2005-02-26 13:31:11 +0000 (Sat, 26 Feb 2005) $
24 * @author Craig R. McClanahan
25 */
26
27 public class WorkflowUtils {
28
29
30 /**
31 * Parse the character encoding from the specified content type header.
32 * If the content type is null, or there is no explicit character encoding,
33 * <code>null</code> is returned.
34 *
35 * @param contentType a content type header
36 */
37 public static String parseCharacterEncoding(String contentType) {
38
39 if (contentType == null)
40 return (null);
41 int start = contentType.indexOf("charset=");
42 if (start < 0)
43 return (null);
44 String encoding = contentType.substring(start + 8);
45 int end = encoding.indexOf(';');
46 if (end >= 0)
47 encoding = encoding.substring(0, end);
48 encoding = encoding.trim();
49 if ((encoding.length() > 2) && (encoding.startsWith("\""))
50 && (encoding.endsWith("\"")))
51 encoding = encoding.substring(1, encoding.length() - 1);
52 return (encoding.trim());
53
54 }
55
56
57 }