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* and Distribution License("CDDL") (collectively, the "License"). You
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package javax.mail.internet;
import java.io.*;
import java.util.
Enumeration;
import javax.mail.*;
import com.sun.
mail.
util.
LineOutputStream;
/**
* A MimeBodyPart that handles data that has already been encoded.
* This class is useful when constructing a message and attaching
* data that has already been encoded (for example, using base64
* encoding). The data may have been encoded by the application,
* or may have been stored in a file or database in encoded form.
* The encoding is supplied when this object is created. The data
* is attached to this object in the usual fashion, by using the
* <code>setText</code>, <code>setContent</code>, or
* <code>setDataHandler</code> methods.
*
* @since JavaMail 1.4
*/
public class
PreencodedMimeBodyPart extends
MimeBodyPart {
private
String encoding;
/**
* Create a PreencodedMimeBodyPart that assumes the data is
* encoded using the specified encoding. The encoding must
* be a MIME supported Content-Transfer-Encoding.
*
* @param encoding the Content-Transfer-Encoding
*/
public
PreencodedMimeBodyPart(
String encoding) {
this.
encoding =
encoding;
}
/**
* Returns the content transfer encoding specified when
* this object was created.
*/
@
Override
public
String getEncoding() throws
MessagingException {
return
encoding;
}
/**
* Output the body part as an RFC 822 format stream.
*
* @exception IOException if an error occurs writing to the
* stream or if an error is generated
* by the javax.activation layer.
* @exception MessagingException for other failures
* @see javax.activation.DataHandler#writeTo
*/
@
Override
public void
writeTo(
OutputStream os)
throws
IOException,
MessagingException {
// see if we already have a LOS
LineOutputStream los = null;
if (
os instanceof
LineOutputStream) {
los = (
LineOutputStream)
os;
} else {
los = new
LineOutputStream(
os);
}
// First, write out the header
Enumeration<
String>
hdrLines =
getAllHeaderLines();
while (
hdrLines.
hasMoreElements())
los.
writeln(
hdrLines.
nextElement());
// The CRLF separator between header and content
los.
writeln();
// Finally, the content, already encoded.
getDataHandler().
writeTo(
os);
os.
flush();
}
/**
* Force the <code>Content-Transfer-Encoding</code> header to use
* the encoding that was specified when this object was created.
*/
@
Override
protected void
updateHeaders() throws
MessagingException {
super.updateHeaders();
MimeBodyPart.
setEncoding(this,
encoding);
}
}