BDInfo.TSPlaylistFile.CompareTextStreams C# (CSharp) Метод

        public static int CompareTextStreams(
            TSTextStream x,
            TSTextStream 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
            {
                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);
                    }
                }
            }
        }