1 /****************************************************************
2 * Licensed to the Apache Software Foundation (ASF) under one *
3 * or more contributor license agreements. See the NOTICE file *
4 * distributed with this work for additional information *
5 * regarding copyright ownership. The ASF licenses this file *
6 * to you under the Apache License, Version 2.0 (the *
7 * "License"); you may not use this file except in compliance *
8 * with the License. You may obtain a copy of the License at *
9 * *
10 * http://www.apache.org/licenses/LICENSE-2.0 *
11 * *
12 * Unless required by applicable law or agreed to in writing, *
13 * software distributed under the License is distributed on an *
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
15 * KIND, either express or implied. See the License for the *
16 * specific language governing permissions and limitations *
17 * under the License. *
18 ****************************************************************/
19
20 package org.apache.james.mime4j.message;
21
22 import java.io.IOException;
23 import java.io.OutputStream;
24 import java.io.OutputStreamWriter;
25 import java.io.Reader;
26 import java.io.StringReader;
27 import java.io.Writer;
28 import java.nio.charset.Charset;
29
30 import org.apache.james.mime4j.util.CharsetUtil;
31
32 /**
33 * Text body backed by a <code>String</code>.
34 */
35 class StringTextBody extends TextBody {
36
37 private final String text;
38 private final Charset charset;
39
40 public StringTextBody(final String text, Charset charset) {
41 this.text = text;
42 this.charset = charset;
43 }
44
45 @Override
46 public String getMimeCharset() {
47 return CharsetUtil.toMimeCharset(charset.name());
48 }
49
50 @Override
51 public Reader getReader() throws IOException {
52 return new StringReader(text);
53 }
54
55 @Override
56 public void writeTo(OutputStream out) throws IOException {
57 if (out == null)
58 throw new IllegalArgumentException();
59
60 Reader reader = new StringReader(text);
61 Writer writer = new OutputStreamWriter(out, charset);
62
63 char buffer[] = new char[1024];
64 while (true) {
65 int nChars = reader.read(buffer);
66 if (nChars == -1)
67 break;
68
69 writer.write(buffer, 0, nChars);
70 }
71
72 reader.close();
73 writer.flush();
74 }
75
76 @Override
77 public StringTextBody copy() {
78 return new StringTextBody(text, charset);
79 }
80
81 }