ReadFileNative()

static unsafe int System.ConsolePal.WindowsConsoleStream.ReadFileNative ( IntPtr hFile, Span< byte > buffer, bool isPipe, out int bytesRead, bool useFileAPIs )

inlinestaticprivate

Definition at line 74 of file ConsolePal.cs.

        {
            if (buffer.IsEmpty)
            {
                bytesRead = 0;
                return 0;
            }
            bool flag;
            fixed (byte* ptr = buffer)
            {
                if (useFileAPIs)
                {
                    flag = global::Interop.Kernel32.ReadFile(hFile, ptr, buffer.Length, out bytesRead, IntPtr.Zero) != 0;
                }
                else
                {
                    flag = global::Interop.Kernel32.ReadConsole(hFile, ptr, buffer.Length / 2, out var lpNumberOfCharsRead, IntPtr.Zero);
                    bytesRead = lpNumberOfCharsRead * 2;
                }
            }
            if (flag)
            {
                return 0;
            }
            int lastPInvokeError = Marshal.GetLastPInvokeError();
            if (lastPInvokeError == 232 || lastPInvokeError == 109)
            {
                return 0;
            }
            return lastPInvokeError;
        }

References System.buffer, System.Runtime.InteropServices.Marshal.GetLastPInvokeError(), and System.IntPtr.Zero.

Referenced by System.ConsolePal.WindowsConsoleStream.Read().