Public Function MoveNext() As Boolean
      Me._1 = Nothing
      Dim num1 As Integer = Me._2
      If (((num1 = 33639248) OrElse (num1 = 101010256)) OrElse ((num1 = 84233040) OrElse (num1 = 101075792))) Then
            Return False
      End If
      If ((num1 = 134695760) OrElse (num1 = 808471376)) Then
            num1 = Me._2
      End If
      If (num1 <> 67324752) Then
            Throw New InvalidOperationException
      End If
      Me._1 = New _4
      Me._1
      Dim num2 As Integer = Me._1
      Dim num3 As Integer = Me._1
      Me._2
      Me._2
      Dim num4 As Integer = Me._2
      Dim num5 As Integer = Me._2
      Dim num6 As Integer = Me._1
      Dim num7 As Integer = Me._1
      Dim buffer1 As Byte() = Me._1(num6)
      Me._1._1(Encoding.ASCII.GetString(buffer1, 0, buffer1.Length))
      Me._1(num7)
      If ((num2 And 1) = 1) Then
            Throw New NotSupportedException
      End If
      If (((num3 <> 0) AndAlso (num3 <> 8)) OrElse ((num3 = 0) AndAlso (num4 <> num5))) Then
            Throw New InvalidOperationException
      End If
      Dim _1 As New _2
      Dim stream1 As New MemoryStream(num5)
      Dim num8 As Integer = 4096
      Dim buffer2 As Byte() = New Byte(num8  - 1) {}
      Do While (num8 > 0)
            num8 = buffer2.Length
            Dim flag1 As Boolean = False
            If (num3 = 0) Then
                  If ((num8 > num4) AndAlso (num4 >= 0)) Then
                        num8 = num4
                  End If
                  num8 = Me._1.Read(buffer2, 0, num8)
                  If (num8 > 0) Then
                        num4 = (num4 - num8)
                        num5 = (num5 - num8)
                  End If
                  If (num4 <> 0) Then
                        flag1 = True
                        Exit Do
                  End If
                  If (num8 < 0) Then
                        Throw New InvalidOperationException
                  End If
                  Exit Do
            End If
            If (num3 = 8) Then
                  Do While True
                        Dim num9 As Integer = _1._1(buffer2, 0, num8)
                        If (num9 > 0) Then
                              num8 = num9
                              Exit Do
                        End If
                        If _1._4 Then
                              Throw New InvalidOperationException
                        End If
                        If _1._5 Then
                              num8 = 0
                              Exit Do
                        End If
                        If Not _1._3 Then
                              Throw New NotSupportedException
                        End If
                        Dim buffer3 As Byte() = New Byte(1024  - 1) {}
                        num9 = Me._1.Read(buffer3, 0, buffer3.Length)
                        If (num9 <= 0) Then
                              Throw New InvalidOperationException
                        End If
                        _1._1(buffer3, 0, num9)
                  Loop
                  If (num8 <= 0) Then
                        If Not _1._5 Then
                              Throw New InvalidOperationException
                        End If
                        Me._1.Position = (Me._1.Position - _1._3)
                        If (((num2 And 8) = 0) AndAlso ((_1._2 <> num4) OrElse (_1._1 <> num5))) Then
                              Throw New InvalidOperationException
                        End If
                        _1 = New _2
                        flag1 = True
                  End If
            End If
            If (flag1 AndAlso ((num2 And 8) <> 0)) Then
                  num1 = Me._2
                  If (num1 <> 134695760) Then
                        Throw New InvalidOperationException
                  End If
                  num4 = Me._2
                  num5 = Me._2
            End If
            stream1.Write(buffer2, 0, num8)
      Loop
      stream1.Position = 0
      buffer2 = New Byte(CType(stream1.Length, Integer)  - 1) {}
      stream1.Read(buffer2, 0, buffer2.Length)
      Me._1._1(buffer2)
      Return True
End Function