BDInfo.TSPlaylistFile.CompareGraphicsStreams C# (CSharp) Method

        private static int CompareGraphicsStreams(
            TSGraphicsStream x,
            TSGraphicsStream y)
        {
            if (x == y)
            {
                return 0;
            }
            else if (x == null && y == null)
            {
                return 0;
            }
            else if (x == null && y != null)
            {
                return -1;
            }
            else if (x != null && y == null)
            {
                return 1;
            }
            else
            {
                int sortX = GetStreamTypeSortIndex(x.StreamType);
                int sortY = GetStreamTypeSortIndex(y.StreamType);

                if (sortX > sortY)
                {
                    return -1;
                }
                else if (sortY > sortX)
                {
                    return 1;
                }
                else if (x.LanguageCode == "eng")
                {
                    return -1;
                }
                else if (y.LanguageCode == "eng")
                {
                    return 1;
                }
                else
                {
                    if (x.LanguageCode == y.LanguageCode)
                    {
                        if (x.PID > y.PID)
                        {
                            return 1;
                        }
                        else if (y.PID > x.PID)
                        {
                            return -1;
                        }
                        else
                        {
                            return 0;
                        }
                    }
                    else
                    {
                        return string.Compare(x.LanguageName, y.LanguageName);
                    }
                }
            }
        }