System.ConsolePal.WriteStdoutAnsiString C# (CSharp) Method

        private static unsafe void WriteStdoutAnsiString(string value)
        {
            if (string.IsNullOrEmpty(value))
                return;

            // Except for extremely rare cases, ANSI escape strings should be very short.
            const int StackAllocThreshold = 256;
            if (value.Length <= StackAllocThreshold)
            {
                int dataLen = Encoding.UTF8.GetMaxByteCount(value.Length);
                byte* data = stackalloc byte[dataLen];
                fixed (char* chars = value)
                {
                    int bytesToWrite = Encoding.UTF8.GetBytes(chars, value.Length, data, dataLen);
                    Debug.Assert(bytesToWrite <= dataLen);

                    lock (Console.Out) // synchronize with other writers
                    {
                        Write(Interop.Sys.FileDescriptors.STDOUT_FILENO, data, bytesToWrite);
                    }
                }
            }
            else
            {
                byte[] data = Encoding.UTF8.GetBytes(value);
                lock (Console.Out) // synchronize with other writers
                {
                    Write(Interop.Sys.FileDescriptors.STDOUT_FILENO, data, 0, data.Length);
                }
            }
        }