javax.mail.internet.PreencodedMimeBodyPart Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License"). You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* glassfish/bootstrap/legal/CDDLv1.0.txt or
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* HEADER in each file and include the License file at
* glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
* add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your
* own identifying information: Portions Copyright [yyyy]
* [name of copyright owner]
*/
/*
* @(#)PreencodedMimeBodyPart.java 1.2 05/08/29
*
* Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved.
*/
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
* setText, setContent, or
* setDataHandler 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.
*/
public PreencodedMimeBodyPart(String encoding) {
this.encoding = encoding;
}
/**
* Returns the content transfer encoding specified when
* this object was created.
*/
public String getEncoding() throws MessagingException {
return encoding;
}
/**
* Output the body part as an RFC 822 format stream.
*
* @exception MessagingException
* @exception IOException if an error occurs writing to the
* stream or if an error is generated
* by the javax.activation layer.
* @see javax.activation.DataHandler#writeTo
*/
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 hdrLines = getAllHeaderLines();
while (hdrLines.hasMoreElements())
los.writeln((String)hdrLines.nextElement());
// The CRLF separator between header and content
los.writeln();
// Finally, the content, already encoded.
getDataHandler().writeTo(os);
os.flush();
}
/**
* Force the Content-Transfer-Encoding header to use
* the encoding that was specified when this object was created.
*/
protected void updateHeaders() throws MessagingException {
super.updateHeaders();
MimeBodyPart.setEncoding(this, encoding);
}
}