aoqi@0: /* aoqi@0: * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. aoqi@0: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. aoqi@0: * aoqi@0: * This code is free software; you can redistribute it and/or modify it aoqi@0: * under the terms of the GNU General Public License version 2 only, as aoqi@0: * published by the Free Software Foundation. Oracle designates this aoqi@0: * particular file as subject to the "Classpath" exception as provided aoqi@0: * by Oracle in the LICENSE file that accompanied this code. aoqi@0: * aoqi@0: * This code is distributed in the hope that it will be useful, but WITHOUT aoqi@0: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or aoqi@0: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License aoqi@0: * version 2 for more details (a copy is included in the LICENSE file that aoqi@0: * accompanied this code). aoqi@0: * aoqi@0: * You should have received a copy of the GNU General Public License version aoqi@0: * 2 along with this work; if not, write to the Free Software Foundation, aoqi@0: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. aoqi@0: * aoqi@0: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA aoqi@0: * or visit www.oracle.com if you need additional information or have any aoqi@0: * questions. aoqi@0: */ aoqi@0: aoqi@0: /* aoqi@0: * @(#)MimePartDataSource.java 1.9 02/03/27 aoqi@0: */ aoqi@0: aoqi@0: aoqi@0: aoqi@0: package com.sun.xml.internal.messaging.saaj.packaging.mime.internet; aoqi@0: aoqi@0: import java.io.*; aoqi@0: import java.net.UnknownServiceException; aoqi@0: aoqi@0: import javax.activation.DataSource; aoqi@0: aoqi@0: import com.sun.xml.internal.messaging.saaj.packaging.mime.MessagingException; aoqi@0: aoqi@0: /** aoqi@0: * A utility class that implements a DataSource out of aoqi@0: * a MimeBodyPart. This class is primarily meant for service providers. aoqi@0: * aoqi@0: * @author John Mani aoqi@0: */ aoqi@0: aoqi@0: public final class MimePartDataSource implements DataSource { aoqi@0: private final MimeBodyPart part; aoqi@0: aoqi@0: /** aoqi@0: * Constructor, that constructs a DataSource from a MimeBodyPart. aoqi@0: */ aoqi@0: public MimePartDataSource(MimeBodyPart part) { aoqi@0: this.part = part; aoqi@0: } aoqi@0: aoqi@0: /** aoqi@0: * Returns an input stream from this MimeBodyPart.
aoqi@0: * aoqi@0: * This method applies the appropriate transfer-decoding, based aoqi@0: * on the Content-Transfer-Encoding attribute of this MimeBodyPart. aoqi@0: * Thus the returned input stream is a decoded stream of bytes.
aoqi@0: *
aoqi@0: * This implementation obtains the raw content from the MimeBodyPart
aoqi@0: * using the getContentStream()
method and decodes
aoqi@0: * it using the MimeUtility.decode()
method.
aoqi@0: *
aoqi@0: * @return decoded input stream
aoqi@0: */
aoqi@0: public InputStream getInputStream() throws IOException {
aoqi@0:
aoqi@0: try {
aoqi@0: InputStream is = part.getContentStream();
aoqi@0:
aoqi@0: String encoding = part.getEncoding();
aoqi@0: if (encoding != null)
aoqi@0: return MimeUtility.decode(is, encoding);
aoqi@0: else
aoqi@0: return is;
aoqi@0: } catch (MessagingException mex) {
aoqi@0: throw new IOException(mex.getMessage());
aoqi@0: }
aoqi@0: }
aoqi@0:
aoqi@0: /**
aoqi@0: * DataSource method to return an output stream.
aoqi@0: * aoqi@0: * This implementation throws the UnknownServiceException. aoqi@0: */ aoqi@0: public OutputStream getOutputStream() throws IOException { aoqi@0: throw new UnknownServiceException(); aoqi@0: } aoqi@0: aoqi@0: /** aoqi@0: * Returns the content-type of this DataSource.
aoqi@0: *
aoqi@0: * This implementation just invokes the getContentType
aoqi@0: * method on the MimeBodyPart.
aoqi@0: */
aoqi@0: public String getContentType() {
aoqi@0: return part.getContentType();
aoqi@0: }
aoqi@0:
aoqi@0: /**
aoqi@0: * DataSource method to return a name.
aoqi@0: * aoqi@0: * This implementation just returns an empty string. aoqi@0: */ aoqi@0: public String getName() { aoqi@0: try { aoqi@0: return part.getFileName(); aoqi@0: } catch (MessagingException mex) { aoqi@0: return ""; aoqi@0: } aoqi@0: } aoqi@0: }