System.IO.Compression.DeflateInput.ConsumeBytes C# (CSharp) Méthode

        internal void ConsumeBytes(int n) {
            this.startIndex += n;
            this.count -= n;
        }

 private void GetCompressedOutput(DeflateInput input, OutputBuffer output, int maxBytesToCopy)
 {
     int bytesWritten = output.BytesWritten;
     int num2 = 0;
     int num3 = this.BytesInHistory + input.Count;
     do
     {
         int num4 = (input.Count < this.inputWindow.FreeWindowSpace) ? input.Count : this.inputWindow.FreeWindowSpace;
         if (maxBytesToCopy >= 1)
         {
             num4 = Math.Min(num4, maxBytesToCopy - num2);
         }
         if (num4 > 0)
         {
             this.inputWindow.CopyBytes(input.Buffer, input.StartIndex, num4);
             input.ConsumeBytes(num4);
             num2 += num4;
         }
         this.GetCompressedOutput(output);
     }
     while ((this.SafeToWriteTo(output) && this.InputAvailable(input)) && ((maxBytesToCopy < 1) || (num2 < maxBytesToCopy)));
     int num6 = output.BytesWritten - bytesWritten;
     int num7 = this.BytesInHistory + input.Count;
     int num8 = num3 - num7;
     if (num6 != 0)
     {
         this.lastCompressionRatio = ((double) num6) / ((double) num8);
     }
 }