public SimpleInputBuffer(int buffersize,
    ByteBufferAllocator allocator) 
{
        super(buffersize, allocator);
}

 public int consumeContent(ContentDecoder decoder) throws IOException 
{
        setInputMode();
        int totalRead = 0;
        int bytesRead;
        while ((bytesRead = decoder.read(this.buffer)) != -1) {
            if (bytesRead == 0) {
                if (!this.buffer.hasRemaining()) {
                    expand();
                } else {
                    break;
                }
            } else {
                totalRead += bytesRead;
            }
        }
        if (bytesRead == -1 || decoder.isCompleted()) {
            this.endOfStream = true;
        }
        return totalRead;
}

 public boolean isEndOfStream() 
{
        return !hasData() && this.endOfStream;
}

 public int read() throws IOException 
{
        if (isEndOfStream()) {
            return -1; 
        }
        return this.buffer.get() & 0xff;
}

 public int read(byte[] b) throws IOException 
{
        if (isEndOfStream()) {
            return -1; 
        }
        if (b == null) {
            return 0;
        }
        return read(b, 0, b.length);
}

 public int read(byte[] b,
    int off,
    int len) throws IOException 
{
        if (isEndOfStream()) {
            return -1; 
        }
        if (b == null) {
            return 0;
        }
        setOutputMode();
        int chunk = len;
        if (chunk  > this.buffer.remaining()) {
            chunk = this.buffer.remaining();
        }
        this.buffer.get(b, off, chunk);
        return chunk;
}

 public  void reset() 
{
        this.endOfStream = false;
        super.clear();
}

 public  void shutdown() 
{

}