MimeMessageUtilpublic class MimeMessageUtil extends Object | Utility class to provide optimized write methods for the various MimeMessage
implementations. |
| Methods Summary |
|---|
| public static long | calculateMessageSize(javax.mail.internet.MimeMessage message)
long size;
//SK: Should probably eventually store this as a locally
// maintained value (so we don't have to load and reparse
// messages each time).
size = message.getSize();
if (size != -1) {
Enumeration e = message.getAllHeaderLines();
if (e.hasMoreElements()) {
size += 2;
}
while (e.hasMoreElements()) {
// add 2 bytes for the CRLF
size += ((String) e.nextElement()).length()+2;
}
}
if (size == -1) {
SizeCalculatorOutputStream out = new SizeCalculatorOutputStream();
try {
message.writeTo(out);
} catch (IOException e) {
// should never happen as SizeCalculator does not actually throw IOExceptions.
throw new MessagingException("IOException wrapped by getMessageSize",e);
}
size = out.getSize();
}
return size;
| | public static void | copyStream(java.io.InputStream in, java.io.OutputStream out)Convenience method to copy streams
// TODO: This is really a bad way to do this sort of thing. A shared buffer to
// allow simultaneous read/writes would be a substantial improvement
byte[] block = new byte[1024];
int read = 0;
while ((read = in.read(block)) > -1) {
out.write(block, 0, read);
}
out.flush();
| | public static java.io.InputStream | getHeadersInputStream(javax.mail.internet.MimeMessage message, java.lang.String[] ignoreList)
ByteArrayOutputStream bo = new ByteArrayOutputStream();
writeHeadersTo(message,bo,ignoreList);
return new ByteArrayInputStream(bo.toByteArray());
| | public static long | getMessageSize(javax.mail.internet.MimeMessage message)
//If we have a MimeMessageWrapper, then we can ask it for just the
// message size and skip calculating it
long size = -1;
if (message instanceof MimeMessageWrapper) {
MimeMessageWrapper wrapper = (MimeMessageWrapper) message;
size = wrapper.getMessageSize();
} else if (message instanceof MimeMessageCopyOnWriteProxy) {
MimeMessageCopyOnWriteProxy wrapper = (MimeMessageCopyOnWriteProxy) message;
size = wrapper.getMessageSize();
}
if (size == -1) {
size = calculateMessageSize(message);
}
return size;
| | private static void | writeHeadersTo(javax.mail.internet.MimeMessage message, java.io.OutputStream headerOs, java.lang.String[] ignoreList)Write the message headers to the given outputstream
//Write the headers (minus ignored ones)
Enumeration headers = message.getNonMatchingHeaderLines(ignoreList);
writeHeadersTo(headers, headerOs);
| | public static void | writeHeadersTo(java.util.Enumeration headers, java.io.OutputStream headerOs)Write the message headers to the given outputstream
PrintWriter hos = new InternetPrintWriter(new BufferedWriter(new OutputStreamWriter(headerOs), 512), true);
while (headers.hasMoreElements()) {
hos.println((String)headers.nextElement());
}
// Print header/data separator
hos.println();
hos.flush();
| | public static void | writeMessageBodyTo(javax.mail.internet.MimeMessage message, java.io.OutputStream bodyOs)
OutputStream bos;
InputStream bis;
try {
// Get the message as a stream. This will encode
// objects as necessary, and we have some input from
// decoding an re-encoding the stream. I'd prefer the
// raw stream, but see
bos = MimeUtility.encode(bodyOs, message.getEncoding());
bis = message.getInputStream();
} catch(UnsupportedDataTypeException udte) {
/* If we get an UnsupportedDataTypeException try using
* the raw input stream as a "best attempt" at rendering
* a message.
*
* WARNING: JavaMail v1.3 getRawInputStream() returns
* INVALID (unchanged) content for a changed message.
* getInputStream() works properly, but in this case
* has failed due to a missing DataHandler.
*
* MimeMessage.getRawInputStream() may throw a "no
* content" MessagingException. In JavaMail v1.3, when
* you initially create a message using MimeMessage
* APIs, there is no raw content available.
* getInputStream() works, but getRawInputStream()
* throws an exception. If we catch that exception,
* throw the UDTE. It should mean that someone has
* locally constructed a message part for which JavaMail
* doesn't have a DataHandler.
*/
try {
bis = message.getRawInputStream();
bos = bodyOs;
} catch(javax.mail.MessagingException _) {
throw udte;
}
}
catch(javax.mail.MessagingException me) {
/* This could be another kind of MessagingException
* thrown by MimeMessage.getInputStream(), such as a
* javax.mail.internet.ParseException.
*
* The ParseException is precisely one of the reasons
* why the getRawInputStream() method exists, so that we
* can continue to stream the content, even if we cannot
* handle it. Again, if we get an exception, we throw
* the one that caused us to call getRawInputStream().
*/
try {
bis = message.getRawInputStream();
bos = bodyOs;
} catch(javax.mail.MessagingException _) {
throw me;
}
}
try {
copyStream(bis, bos);
}
finally {
IOUtil.shutdownStream(bis);
}
| | public static void | writeTo(javax.mail.internet.MimeMessage message, java.io.OutputStream headerOs, java.io.OutputStream bodyOs)Convenience method to take any MimeMessage and write the headers and body to two
different output streams
writeTo(message, headerOs, bodyOs, null);
| | public static void | writeTo(javax.mail.internet.MimeMessage message, java.io.OutputStream headerOs, java.io.OutputStream bodyOs, java.lang.String[] ignoreList)Convenience method to take any MimeMessage and write the headers and body to two
different output streams, with an ignore list
MimeMessage testMessage = message;
if (message instanceof MimeMessageCopyOnWriteProxy) {
MimeMessageCopyOnWriteProxy wr = (MimeMessageCopyOnWriteProxy) message;
testMessage = wr.getWrappedMessage();
}
if (testMessage instanceof MimeMessageWrapper) {
MimeMessageWrapper wrapper = (MimeMessageWrapper)testMessage;
if (!wrapper.isModified()) {
wrapper.writeTo(headerOs, bodyOs, ignoreList);
return;
}
}
writeToInternal(message, headerOs, bodyOs, ignoreList);
| | public static void | writeToInternal(javax.mail.internet.MimeMessage message, java.io.OutputStream headerOs, java.io.OutputStream bodyOs, java.lang.String[] ignoreList)
if(message.getMessageID() == null) {
message.saveChanges();
}
writeHeadersTo(message, headerOs, ignoreList);
// Write the body to the output stream
writeMessageBodyTo(message, bodyOs);
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