1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 /* |
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27 * @(#)MimePartDataSource.java 1.9 02/03/27 |
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28 */ |
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29 |
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30 |
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31 |
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32 package com.sun.xml.internal.messaging.saaj.packaging.mime.internet; |
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33 |
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34 import java.io.*; |
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35 import java.net.UnknownServiceException; |
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36 |
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37 import javax.activation.DataSource; |
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38 |
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39 import com.sun.xml.internal.messaging.saaj.packaging.mime.MessagingException; |
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40 |
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41 /** |
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42 * A utility class that implements a DataSource out of |
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43 * a MimeBodyPart. This class is primarily meant for service providers. |
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44 * |
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45 * @author John Mani |
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46 */ |
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47 |
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48 public final class MimePartDataSource implements DataSource { |
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49 private final MimeBodyPart part; |
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50 |
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51 /** |
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52 * Constructor, that constructs a DataSource from a MimeBodyPart. |
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53 */ |
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54 public MimePartDataSource(MimeBodyPart part) { |
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55 this.part = part; |
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56 } |
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57 |
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58 /** |
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59 * Returns an input stream from this MimeBodyPart. <p> |
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60 * |
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61 * This method applies the appropriate transfer-decoding, based |
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62 * on the Content-Transfer-Encoding attribute of this MimeBodyPart. |
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63 * Thus the returned input stream is a decoded stream of bytes.<p> |
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64 * |
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65 * This implementation obtains the raw content from the MimeBodyPart |
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66 * using the <code>getContentStream()</code> method and decodes |
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67 * it using the <code>MimeUtility.decode()</code> method. |
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68 * |
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69 * @return decoded input stream |
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70 */ |
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71 public InputStream getInputStream() throws IOException { |
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72 |
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73 try { |
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74 InputStream is = part.getContentStream(); |
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75 |
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76 String encoding = part.getEncoding(); |
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77 if (encoding != null) |
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78 return MimeUtility.decode(is, encoding); |
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79 else |
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80 return is; |
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81 } catch (MessagingException mex) { |
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82 throw new IOException(mex.getMessage()); |
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83 } |
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84 } |
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85 |
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86 /** |
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87 * DataSource method to return an output stream. <p> |
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88 * |
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89 * This implementation throws the UnknownServiceException. |
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90 */ |
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91 public OutputStream getOutputStream() throws IOException { |
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92 throw new UnknownServiceException(); |
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93 } |
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94 |
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95 /** |
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96 * Returns the content-type of this DataSource. <p> |
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97 * |
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98 * This implementation just invokes the <code>getContentType</code> |
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99 * method on the MimeBodyPart. |
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100 */ |
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101 public String getContentType() { |
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102 return part.getContentType(); |
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103 } |
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104 |
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105 /** |
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106 * DataSource method to return a name. <p> |
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107 * |
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108 * This implementation just returns an empty string. |
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109 */ |
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110 public String getName() { |
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111 try { |
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112 return part.getFileName(); |
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113 } catch (MessagingException mex) { |
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114 return ""; |
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115 } |
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116 } |
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117 } |
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