private void nextCurrent() throws IOException {
if (rootPart != null) {
if (writingHeaders) {
writingHeaders = false;
current = rootPart.getInputStream();
rootPart = null;
} else {
writingHeaders = true;
bout.reset();
writer.append("--").append(boundary).append("\r\n");
writer.append("Content-Type: ").append(rootPart.getContentType()).append("\r\n");
writer.append("Content-ID: <").append(start).append(">\r\n\r\n");
writer.flush();
current = bout.createInputStream();
}
} else {
if (writingHeaders) {
writingHeaders = false;
current = att.getDataHandler().getInputStream();
} else if (atts.hasNext()) {
att = atts.next();
writingHeaders = true;
bout.reset();
writer.append("\r\n");
writer.append("--").append(boundary).append("\r\n");
Iterator<String> heads = att.getHeaderNames();
while (heads.hasNext()) {
String s = heads.next();
writer.append(s).append(": ").append(att.getHeader(s)).append("\r\n");
}
writer.append("\r\n");
writer.flush();
current = bout.createInputStream();
}
}
}
MultiPartDataSource(Message message, DataSource root) {
atts = message.getAttachments().iterator();
String s = (String) message.get(Message.CONTENT_TYPE);
boundary = findBoundary(s);
start = findStart(s);
if (!s.contains(boundary)) {
s += "; boundary=\"" + boundary + "\"";
}
contentType = s;
rootPart = root;
try {
writer = new OutputStreamWriter(bout, "ASCII");
writer.append("Content-Type: ").append(contentType).append("\r\n\r\n");
writer.flush();
current = bout.createInputStream();
} catch (Exception e) {
// nothing
}
}