@Override
protected Storage toStorage0() throws IOException {
if (tail == null)
return new MemoryStorageProvider.MemoryStorage(head.buffer(), head.length());
return new ThresholdStorage(head.buffer(), head.length(), tail.toStorage());
}
@Override
protected void write0(byte[] buffer, int offset, int length) throws IOException {
int remainingHeadSize = thresholdSize - head.length();
if (remainingHeadSize > 0) {
int n = Math.min(remainingHeadSize, length);
head.append(buffer, offset, n);
offset += n;
length -= n;
}
if (length > 0) {
if (tail == null) tail = backend.createStorageOutputStream();
tail.write(buffer, offset, length);
}
}