/*
* Parse the contents of this multipart message and create the
* child body parts.
*/
protected synchronized void parse() throws MessagingException {
if (parsed) return;
InputStream in = null;
try {
in = ds.getInputStream();
if (!(in instanceof ByteArrayInputStream) && !(in instanceof BufferedInputStream))
in = new BufferedInputStream(in);
} catch (Exception ex) {
throw new MessagingException("No inputstream from datasource");
}
String line;
int bl = boundary.length();
byte[] bndbytes = new byte[bl];
boundary.getBytes(0, bl, bndbytes, 0);
try {
/*
* Skip any kind of junk until we get to the first
* boundary line.
*/
LineInputStream lin = new LineInputStream(in);
while ((line = lin.readLine()) != null) {
if (line.trim().equals(boundary)) break;
}
if (line == null) throw new MessagingException("Missing start boundary");
/*
* Read and process body parts until we see the
* terminating boundary line (or EOF).
*/
for (; ; ) {
/*
* Collect the headers for this body part.
*/
InternetHeaders headers = new InternetHeaders(in);
if (!in.markSupported()) throw new MessagingException("Stream doesn't support mark");
ByteArrayOutputStream buf = new ByteArrayOutputStream();
int b;
/*
* Read and save the content bytes in buf.
*/
while ((b = in.read()) >= 0) {
if (b == '\r' || b == '\n') {
/*
* Found the end of a line, check whether the
* next line is a boundary.
*/
int i;
in.mark(bl + 4 + 1); // "4" for possible "--\r\n"
if (b == '\r' && in.read() != '\n') {
in.reset();
in.mark(bl + 4);
}
// read bytes, matching against the boundary
for (i = 0; i < bl; i++) if (in.read() != bndbytes[i]) break;
if (i == bl) {
int b2 = in.read();
// check for end of line
if (b2 == '\n') break; // got it! break out of the while loop
if (b2 == '\r') {
in.mark(1);
if (in.read() != '\n') in.reset();
break; // got it! break out of the while loop
}
}
// failed to match, reset and proceed normally
in.reset();
}
buf.write(b);
}
/*
* Create a SunV3BodyPart to represent this body part.
*/
SunV3BodyPart body = new SunV3BodyPart(headers, buf.toByteArray());
addBodyPart(body);
if (b < 0) break;
}
} catch (IOException e) {
throw new MessagingException("IO Error"); // XXX
}
parsed = true;
}
