Using Powershell's bitwise operators

Question

I\'m looking for example of how I would solve the scenario below:

Imagine my printer has the following property for \"Status\"
0 -Offline
2 -Paper Tray Empty

Answer 1

You can let PowerShell do more of the work for you. Here's an example using System.IO.FileOptions:

PS> [enum]::GetValues([io.fileoptions]) | ?{$_.value__ -band 0x90000000}
RandomAccess
WriteThrough

Answer 2

The boolean bitwise and operator in Powershell is -band.

Assume you define your values and descriptions in a hashtable, and have the value of 12 from the printer:

 $status = @{1 = "Offline" ; 2 = "Paper Tray Empty" ; 4 = "Toner Exhausted" ; 8 = "Paper Jam" }
 $value = 12

Then, this statement will give you the textual descriptions:

$status.Keys | where { $_ -band $value } | foreach { $status.Get_Item($_) }

You could define the enum in Powershell, but the above works just as well, and defining enums in Powershell seems like a lot of work.

Here is an article, that talks about how to use the bitwise operators in Powershell.