Question

I have a command line executable that I need to call repeatedly in PowerShell with different options.

On every occassion I wish to check that the exit code is 0.

Is there a way for wrapping the call and the parameters as a function?

& bob.bat -b
... error handling
& bob.bat -a -m "a path"
... error handling

Goes to something like:

function callBob ($paramList)
{
    & bob.bat $paramList
    ... error handling
}

callBob -b
callBob -a -m "a path"
etc...

Unfortunately the above code doesn’t appear to handle multiple parameters – I can’t get things like the second to work, as callBob only takes a single parameter so I end up having to pass in a single string which seems to get quoted on being passed to & bob.bat.

Answer 1

You can do something like this:

function callBob{

bob.bat $args

}

callBob -b

Also, try this wrapper if you want ( from PSAKE):

function Exec
{
    [CmdletBinding()]
    param(
        [Parameter(Position=0,Mandatory=1)][scriptblock]$cmd,
        [Parameter(Position=1,Mandatory=0)][string]$errorMessage = ($msgs.error_bad_command -f $cmd)
    )
    & $cmd
    if ($lastexitcode -ne 0) {
        throw ("Exec: " + $errorMessage)
    }
}