TempFileTextBody.java revision 8978aac1977408b05e386ae846c30920c7faa0a6 
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
20package org.apache.james.mime4j.message;
21
22import java.io.IOException;
23import java.io.InputStream;
24import java.io.InputStreamReader;
25import java.io.OutputStream;
26import java.io.Reader;
27import java.io.UnsupportedEncodingException;
28
29import org.apache.commons.io.IOUtils;
30import org.apache.commons.logging.Log;
31import org.apache.commons.logging.LogFactory;
32import org.apache.james.mime4j.util.CharsetUtil;
33import org.apache.james.mime4j.util.TempFile;
34import org.apache.james.mime4j.util.TempPath;
35import org.apache.james.mime4j.util.TempStorage;
36
37
38/**
39 * Text body backed by a {@link org.apache.james.mime4j.util.TempFile}.
40 *
41 *
42 * @version $Id: TempFileTextBody.java,v 1.3 2004/10/25 07:26:46 ntherning Exp $
43 */
44class TempFileTextBody extends AbstractBody implements TextBody {
45    private static Log log = LogFactory.getLog(TempFileTextBody.class);
46
47    private String mimeCharset = null;
48    private TempFile tempFile = null;
49
50    public TempFileTextBody(InputStream is) throws IOException {
51        this(is, null);
52    }
53
54    public TempFileTextBody(InputStream is, String mimeCharset)
55            throws IOException {
56
57        this.mimeCharset = mimeCharset;
58
59        TempPath tempPath = TempStorage.getInstance().getRootTempPath();
60        tempFile = tempPath.createTempFile("attachment", ".txt");
61
62        OutputStream out = tempFile.getOutputStream();
63        IOUtils.copy(is, out);
64        out.close();
65    }
66
67    /**
68     * @see org.apache.james.mime4j.message.TextBody#getReader()
69     */
70    public Reader getReader() throws UnsupportedEncodingException, IOException {
71        String javaCharset = null;
72        if (mimeCharset != null) {
73            javaCharset = CharsetUtil.toJavaCharset(mimeCharset);
74        }
75
76        if (javaCharset == null) {
77            javaCharset = "ISO-8859-1";
78
79            if (log.isWarnEnabled()) {
80                if (mimeCharset == null) {
81                    log.warn("No MIME charset specified. Using " + javaCharset
82                            + " instead.");
83                } else {
84                    log.warn("MIME charset '" + mimeCharset + "' has no "
85                            + "corresponding Java charset. Using " + javaCharset
86                            + " instead.");
87                }
88            }
89        }
90        /*
91            if (log.isWarnEnabled()) {
92                if (mimeCharset == null) {
93                    log.warn("No MIME charset specified. Using the "
94                           + "platform's default charset.");
95                } else {
96                    log.warn("MIME charset '" + mimeCharset + "' has no "
97                            + "corresponding Java charset. Using the "
98                            + "platform's default charset.");
99                }
100            }
101
102            return new InputStreamReader(tempFile.getInputStream());
103        }*/
104
105        return new InputStreamReader(tempFile.getInputStream(), javaCharset);
106    }
107
108
109    /**
110     * @see org.apache.james.mime4j.message.Body#writeTo(java.io.OutputStream)
111     */
112    public void writeTo(OutputStream out) throws IOException {
113	IOUtils.copy(tempFile.getInputStream(), out);
114    }
115}
116