1 /* 2 * Copyright (c) 1997, 2017, 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 /* 27 * @(#)MimePartDataSource.java 1.9 02/03/27 28 */ 29 30 31 package com.sun.xml.internal.messaging.saaj.packaging.mime.internet; 32 33 import com.sun.xml.internal.messaging.saaj.packaging.mime.MessagingException; 34 35 import javax.activation.DataSource; 36 import java.io.IOException; 37 import java.io.InputStream; 38 import java.io.OutputStream; 39 import java.net.UnknownServiceException; 40 41 /** 42 * A utility class that implements a DataSource out of 43 * a MimeBodyPart. This class is primarily meant for service providers. 44 * 45 * @author John Mani 46 */ 47 48 public final class MimePartDataSource implements DataSource { 49 private final MimeBodyPart part; 50 51 /** 52 * Constructor, that constructs a DataSource from a MimeBodyPart. 53 * 54 * @param part body part 55 */ 56 public MimePartDataSource(MimeBodyPart part) { 57 this.part = part; 58 } 59 60 /** 61 * Returns an input stream from this MimeBodyPart. <p> 62 * 63 * This method applies the appropriate transfer-decoding, based 64 * on the Content-Transfer-Encoding attribute of this MimeBodyPart. 65 * Thus the returned input stream is a decoded stream of bytes.<p> 66 * 67 * This implementation obtains the raw content from the MimeBodyPart 68 * using the <code>getContentStream()</code> method and decodes 69 * it using the <code>MimeUtility.decode()</code> method. 70 * 71 * @return decoded input stream 72 */ 73 @Override 74 public InputStream getInputStream() throws IOException { 75 76 try { 77 InputStream is = part.getContentStream(); 78 79 String encoding = part.getEncoding(); 80 if (encoding != null) 81 return MimeUtility.decode(is, encoding); 82 else 83 return is; 84 } catch (MessagingException mex) { 85 throw new IOException(mex.getMessage()); 86 } 87 } 88 89 /** 90 * DataSource method to return an output stream. <p> 91 * 92 * This implementation throws the UnknownServiceException. 93 */ 94 @Override 95 public OutputStream getOutputStream() throws IOException { 96 throw new UnknownServiceException(); 97 } 98 99 /** 100 * Returns the content-type of this DataSource. <p> 101 * 102 * This implementation just invokes the <code>getContentType</code> 103 * method on the MimeBodyPart. 104 */ 105 @Override 106 public String getContentType() { 107 return part.getContentType(); 108 } 109 110 /** 111 * DataSource method to return a name. <p> 112 * 113 * This implementation just returns an empty string. 114 */ 115 @Override 116 public String getName() { 117 try { 118 return part.getFileName(); 119 } catch (MessagingException mex) { 120 return ""; 121 } 122 } 123 }