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Java > Open Source Codes > org > apache > soap > util > mime > MimeUtils


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 2000 The Apache Software Foundation. All rights
6  * reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "SOAP" and "Apache Software Foundation" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
31  *
32  * 5. Products derived from this software may not be called "Apache",
33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  * ====================================================================
49  *
50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation and was
52  * originally based on software copyright (c) 2000, International
53  * Business Machines, Inc., http://www.apache.org. For more
54  * information on the Apache Software Foundation, please see
55  * <http://www.apache.org/>.
56  */
57
58 package org.apache.soap.util.mime;
59
60 import java.io.*;
61 import java.util.*;
62 import java.net.*;
63 import org.apache.soap.*;
64 import javax.mail.internet.*;
65
66 /**
67  * Mime-related utility functions.
68  *
69  * @author Wouter Cloetens (wouter@mind.be)
70  */
71
72 public class MimeUtils {
73     /**
74      * Get a unique value.
75      *
76      * Similar to javax.mail.internet.UniqueValue, this implementation
77      * generates a unique value by concatenating a newly
78      * created object's <code>hashCode()</code>, the current
79      * time (in milliseconds), and this system's hostname generated by
80      * <code>InternetAddress.getLocalAddress()</code>.
81      */
82     public static String JavaDoc getUniqueValue() {
83         String JavaDoc host = null;
84         try {
85             host = InetAddress.getLocalHost().getHostName();
86         } catch (UnknownHostException uhe) {
87             host = "localhost";
88         }
89
90         StringBuffer JavaDoc s = new StringBuffer JavaDoc();
91
92         // Unique string is <hashcode>.<currentTime>.apache-soap.<hostname>
93 s.append(s.hashCode()).append('.').append(System.currentTimeMillis()).
94             append(".apache-soap.").append(host);
95         return s.toString();
96     }
97
98     /**
99      * Extract a Java encoding from a Content-Type's MIME character set.
100      */
101     public static String JavaDoc getEncoding(String JavaDoc type, String JavaDoc defaultEncoding) {
102         String JavaDoc encoding = null;
103         try {
104         if (type != null && !type.equals(""))
105             encoding = new ContentType(type).getParameter("charset");
106         } catch(ParseException pe) {
107         }
108         if (encoding == null)
109             encoding = defaultEncoding;
110         else
111             encoding = MimeUtility.javaCharset(encoding);
112
113         return encoding;
114     }
115
116     /**
117      * URLDecode string.
118      */
119     private static final String JavaDoc hexmap = "0123456789ABCDEF";
120     public static String JavaDoc decode(String JavaDoc s) {
121         StringBuffer JavaDoc ret = new StringBuffer JavaDoc();
122         char c;
123         for (int i = 0; i < s.length(); i++) {
124             c = s.charAt(i);
125             switch(c) {
126             case '+':
127                 ret.append(' ');
128                 break;
129             case '%':
130                 ret.append((char)((hexmap.indexOf(s.charAt(++i)) << 4)
131                                   + hexmap.indexOf(s.charAt(++i))));
132                 break;
133             default:
134                 ret.append(c);
135             }
136         }
137         return ret.toString();
138     }
139 }
140
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