Lucene.Net.Store.DataOutput.CopyBytes C# (CSharp) Method

        public virtual void CopyBytes(DataInput input, long numBytes)
        {
            Debug.Assert(numBytes >= 0, "numBytes=" + numBytes);
            long left = numBytes;
            if (CopyBuffer == null)
            {
                CopyBuffer = new byte[COPY_BUFFER_SIZE];
            }
            while (left > 0)
            {
                int toCopy;
                if (left > COPY_BUFFER_SIZE)
                {
                    toCopy = COPY_BUFFER_SIZE;
                }
                else
                {
                    toCopy = (int)left;
                }
                input.ReadBytes(CopyBuffer, 0, toCopy);
                WriteBytes(CopyBuffer, 0, toCopy);
                left -= toCopy;
            }
        }