@Override
public int read() throws IOException {
if (chunk == null || !readUntil(pos)) return -1;
while (pos > chunk.lastIndex()) {
chunk = chunk.next;
}
return chunk.get(pos++);
}
@Override
public int read() throws IOException {
int curpos = pos;
if (readUntil(curpos)) return lastChunk.get(curpos);
return -1;
}