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0N/A
0N/Apackage javax.mail.internet;
0N/A
0N/Aimport javax.mail.*;
0N/Aimport javax.activation.*;
0N/Aimport java.io.*;
0N/Aimport java.net.UnknownServiceException;
70N/Aimport com.sun.mail.util.PropUtil;
393N/Aimport com.sun.mail.util.FolderClosedIOException;
0N/A
0N/A/**
0N/A * A utility class that implements a DataSource out of
0N/A * a MimePart. This class is primarily meant for service providers.
0N/A *
0N/A * @see javax.mail.internet.MimePart
0N/A * @see javax.activation.DataSource
0N/A * @author John Mani
0N/A */
0N/A
0N/Apublic class MimePartDataSource implements DataSource, MessageAware {
0N/A /**
0N/A * The MimePart that provides the data for this DataSource.
0N/A *
0N/A * @since JavaMail 1.4
0N/A */
0N/A protected MimePart part;
0N/A
0N/A private MessageContext context;
0N/A
0N/A /**
0N/A * Constructor, that constructs a DataSource from a MimePart.
610N/A *
610N/A * @param part the MimePart
0N/A */
0N/A public MimePartDataSource(MimePart part) {
0N/A this.part = part;
0N/A }
0N/A
0N/A /**
0N/A * Returns an input stream from this MimePart. <p>
0N/A *
0N/A * This method applies the appropriate transfer-decoding, based
0N/A * on the Content-Transfer-Encoding attribute of this MimePart.
0N/A * Thus the returned input stream is a decoded stream of bytes.<p>
0N/A *
0N/A * This implementation obtains the raw content from the Part
0N/A * using the <code>getContentStream()</code> method and decodes
0N/A * it using the <code>MimeUtility.decode()</code> method.
0N/A *
0N/A * @see javax.mail.internet.MimeMessage#getContentStream
0N/A * @see javax.mail.internet.MimeBodyPart#getContentStream
0N/A * @see javax.mail.internet.MimeUtility#decode
0N/A * @return decoded input stream
0N/A */
0N/A public InputStream getInputStream() throws IOException {
0N/A InputStream is;
0N/A
0N/A try {
0N/A if (part instanceof MimeBodyPart)
0N/A is = ((MimeBodyPart)part).getContentStream();
0N/A else if (part instanceof MimeMessage)
0N/A is = ((MimeMessage)part).getContentStream();
0N/A else
0N/A throw new MessagingException("Unknown part");
0N/A
264N/A String encoding =
264N/A MimeBodyPart.restrictEncoding(part, part.getEncoding());
0N/A if (encoding != null)
0N/A return MimeUtility.decode(is, encoding);
0N/A else
0N/A return is;
393N/A } catch (FolderClosedException fex) {
393N/A throw new FolderClosedIOException(fex.getFolder(),
393N/A fex.getMessage());
0N/A } catch (MessagingException mex) {
798N/A IOException ioex = new IOException(mex.getMessage());
798N/A ioex.initCause(mex);
798N/A throw ioex;
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * DataSource method to return an output stream. <p>
0N/A *
0N/A * This implementation throws the UnknownServiceException.
0N/A */
0N/A public OutputStream getOutputStream() throws IOException {
100N/A throw new UnknownServiceException("Writing not supported");
0N/A }
0N/A
0N/A /**
0N/A * Returns the content-type of this DataSource. <p>
0N/A *
0N/A * This implementation just invokes the <code>getContentType</code>
0N/A * method on the MimePart.
0N/A */
0N/A public String getContentType() {
0N/A try {
0N/A return part.getContentType();
0N/A } catch (MessagingException mex) {
0N/A // would like to be able to reflect the exception to the
0N/A // application, but since we can't do that we return a
0N/A // generic "unknown" value here and hope for another
0N/A // exception later.
0N/A return "application/octet-stream";
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * DataSource method to return a name. <p>
0N/A *
0N/A * This implementation just returns an empty string.
0N/A */
0N/A public String getName() {
0N/A try {
0N/A if (part instanceof MimeBodyPart)
0N/A return ((MimeBodyPart)part).getFileName();
0N/A } catch (MessagingException mex) {
0N/A // ignore it
0N/A }
0N/A return "";
0N/A }
0N/A
0N/A /**
0N/A * Return the <code>MessageContext</code> for the current part.
0N/A * @since JavaMail 1.1
0N/A */
0N/A public synchronized MessageContext getMessageContext() {
0N/A if (context == null)
0N/A context = new MessageContext(part);
0N/A return context;
0N/A }
0N/A}