private void expect(Class<?> c) {
if (!c.isInstance(stack.peek())) {
throw new IllegalStateException(
"Internal stack error: "
+ "Expected '"
+ c.getName()
+ "' found '"
+ stack.peek().getClass().getName()
+ "'");
}
}
public void startBodyPart() {
expect(MimeMultipart.class);
try {
MimeBodyPart bodyPart = new MimeBodyPart();
((MimeMultipart) stack.peek()).addBodyPart(bodyPart);
stack.push(bodyPart);
} catch (MessagingException me) {
throw new Error(me);
}
}
public void startMultipart(BodyDescriptor bd) {
expect(Part.class);
Part e = (Part) stack.peek();
try {
MimeMultipart multiPart = new MimeMultipart(e.getContentType());
e.setBody(multiPart);
stack.push(multiPart);
} catch (MessagingException me) {
throw new Error(me);
}
}
public void startMessage() {
if (stack.isEmpty()) {
stack.push(MimeMessage.this);
} else {
expect(Part.class);
try {
MimeMessage m = new MimeMessage();
((Part) stack.peek()).setBody(m);
stack.push(m);
} catch (MessagingException me) {
throw new Error(me);
}
}
}
public void preamble(InputStream is) throws IOException {
expect(MimeMultipart.class);
StringBuffer sb = new StringBuffer();
int b;
while ((b = is.read()) != -1) {
sb.append((char) b);
}
((MimeMultipart) stack.peek()).setPreamble(sb.toString());
}
public void body(BodyDescriptor bd, InputStream in) throws IOException {
expect(Part.class);
Body body = MimeUtility.decodeBody(in, bd.getTransferEncoding());
try {
((Part) stack.peek()).setBody(body);
} catch (MessagingException me) {
throw new Error(me);
}
}
public void field(String fieldData) {
expect(Part.class);
try {
String[] tokens = fieldData.split(":", 2);
((Part) stack.peek()).addHeader(tokens[0], tokens[1].trim());
} catch (MessagingException me) {
throw new Error(me);
}
}
public void field(RawField field) {
expect(Part.class);
try {
Field parsedField = DefaultFieldParser.parse(field.getRaw(), null);
((Part) stack.peek()).addHeader(parsedField.getName(), parsedField.getBody().trim());
} catch (MessagingException me) {
throw new Error(me);
} catch (MimeException me) {
throw new Error(me);
}
}
public void endBodyPart() {
expect(BodyPart.class);
stack.pop();
}
public void endMultipart() {
stack.pop();
}
public void endMessage() {
expect(MimeMessage.class);
stack.pop();
}