private boolean put(ByteArrayOutputStream id, InputStream in, int level) throws IOException {
if (level > 0) {
ByteArrayOutputStream id2 = new ByteArrayOutputStream();
while (true) {
boolean eof = put(id2, in, level - 1);
if (id2.size() > maxBlockSize / 2) {
id2 = putIndirectId(id2);
id2.writeTo(id);
return eof;
} else if (eof) {
id2.writeTo(id);
return true;
}
}
}
byte[] readBuffer = nextBuffer.getAndSet(null);
if (readBuffer == null) {
readBuffer = new byte[maxBlockSize];
}
byte[] buff = read(in, readBuffer);
if (buff != readBuffer) {
// re-use the buffer if the result was shorter
nextBuffer.set(readBuffer);
}
int len = buff.length;
if (len == 0) {
return true;
}
boolean eof = len < maxBlockSize;
if (len < minBlockSize) {
// in-place: 0, len (int), data
id.write(0);
DataUtils.writeVarInt(id, len);
id.write(buff);
} else {
// block: 1, len (int), blockId (long)
id.write(1);
DataUtils.writeVarInt(id, len);
DataUtils.writeVarLong(id, writeBlock(buff));
}
return eof;
}
