1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.xml.internal.messaging.saaj.soap;
27
28 import java.awt.datatransfer.DataFlavor;
29 import java.io.*;
30
31 import javax.activation.*;
32 import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.MimeUtility;
33 import com.sun.xml.internal.messaging.saaj.packaging.mime.util.ASCIIUtility;
34 import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.ContentType;
35
36 /**
37 * JAF data content handler for text/plain --> String
38 *
39 */
40 public class StringDataContentHandler implements DataContentHandler {
41 private static ActivationDataFlavor myDF = new ActivationDataFlavor(
42 java.lang.String.class,
43 "text/plain",
44 "Text String");
45
46 protected ActivationDataFlavor getDF() {
47 return myDF;
48 }
49
50 /**
51 * Return the DataFlavors for this <code>DataContentHandler</code>.
52 *
53 * @return The DataFlavors
54 */
55 public DataFlavor[] getTransferDataFlavors() {
56 return new DataFlavor[] { getDF() };
57 }
58
59 /**
60 * Return the Transfer Data of type DataFlavor from InputStream.
61 *
62 * @param df The DataFlavor
63 * @param ds The DataSource corresponding to the data
64 * @return String object
65 */
66 public Object getTransferData(DataFlavor df, DataSource ds)
67 throws IOException {
68 // use myDF.equals to be sure to get ActivationDataFlavor.equals,
69 // which properly ignores Content-Type parameters in comparison
70 if (getDF().equals(df))
71 return getContent(ds);
72 else
73 return null;
74 }
75
76 public Object getContent(DataSource ds) throws IOException {
77 String enc = null;
78 InputStreamReader is = null;
79
80 try {
81 enc = getCharset(ds.getContentType());
82 is = new InputStreamReader(ds.getInputStream(), enc);
83 } catch (IllegalArgumentException iex) {
84 /*
85 * An unknown charset of the form ISO-XXX-XXX will cause
86 * the JDK to throw an IllegalArgumentException. The
87 * JDK will attempt to create a classname using this string,
88 * but valid classnames must not contain the character '-',
89 * and this results in an IllegalArgumentException, rather than
90 * the expected UnsupportedEncodingException. Yikes.
91 */
92 throw new UnsupportedEncodingException(enc);
93 }
94
95 try {
96 int pos = 0;
97 int count;
98 char buf[] = new char[1024];
99
100 while ((count = is.read(buf, pos, buf.length - pos)) != -1) {
101 pos += count;
102 if (pos >= buf.length) {
103 int size = buf.length;
104 if (size < 256*1024)
105 size += size;
106 else
107 size += 256*1024;
108 char tbuf[] = new char[size];
109 System.arraycopy(buf, 0, tbuf, 0, pos);
110 buf = tbuf;
111 }
112 }
113 return new String(buf, 0, pos);
114 } finally {
115 try {
116 is.close();
117 } catch (IOException ex) { }
118 }
119 }
120
121 /**
122 * Write the object to the output stream, using the specified MIME type.
123 */
124 public void writeTo(Object obj, String type, OutputStream os)
125 throws IOException {
126 if (!(obj instanceof String))
127 throw new IOException("\"" + getDF().getMimeType() +
128 "\" DataContentHandler requires String object, " +
129 "was given object of type " + obj.getClass().toString());
130
131 String enc = null;
132 OutputStreamWriter osw = null;
133
134 try {
135 enc = getCharset(type);
136 osw = new OutputStreamWriter(os, enc);
137 } catch (IllegalArgumentException iex) {
138 /*
139 * An unknown charset of the form ISO-XXX-XXX will cause
140 * the JDK to throw an IllegalArgumentException. The
141 * JDK will attempt to create a classname using this string,
142 * but valid classnames must not contain the character '-',
143 * and this results in an IllegalArgumentException, rather than
144 * the expected UnsupportedEncodingException. Yikes.
145 */
146 throw new UnsupportedEncodingException(enc);
147 }
148
149 String s = (String)obj;
150 osw.write(s, 0, s.length());
151 osw.flush();
152 }
153
154 private String getCharset(String type) {
155 try {
156 ContentType ct = new ContentType(type);
157 String charset = ct.getParameter("charset");
158 if (charset == null)
159 // If the charset parameter is absent, use US-ASCII.
160 charset = "us-ascii";
161 return MimeUtility.javaCharset(charset);
162 } catch (Exception ex) {
163 return null;
164 }
165 }
166
167 }