PS 4.0 Parameters with Space - Catch Error - powershell

Question

I'm executing script in batch and passing 5 parameters separated by a comma via Java. PS 4.0 accepts parameters without the "".
[CmdletBinding()]
Param (
[Parameter(Position = 0)]
[string[]] $inpParms = $(throw 'Failure : This is required.')
)
I invoke the script like
myScript.ps1 user,pwd,Server Name, DLName,Action
It errors out due to the space in "Server Name". Throws error which spits back the parameters:
A positional parameter cannot be found that accepts argument 'System.Object[]'.
At line:1 char:1
+ .\myScript.ps1 user,pwd,Server Name, DLName,Create
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [ExchangeDL.ps1], ParameterBindingException
+ FullyQualifiedErrorId : PositionalParameterNotFound,ExchangeDL.ps1
Is there a way to trap this error so I don't spit sensitive info in logs?

Answer 1

While you don't have to quote arguments that don't have shell metacharacters in them, a space is a metacharacter, so you have two choices:
`-quote the metacharacters individually:
./myScript.ps1 user, pwd, Server` Name, DLName, Create
Or use "..." (interpolating) or '...' (literal) to enclose entire arguments as needed:
./myScript.ps1 user, pwd, 'Server Name', DLName, Create
Generally, though, your script will be more maintainable if you define individual parameters rather than a single array.
If you want to catch an incorrect invocation attempt, use a Try / Catch statement:
Try {
./myScript.ps1 user, pwd, Server Name, DLName, Action
} Catch {
Throw "Invocation of ./myScript.ps1 failed."
}
By not using the information from the statement-terminating error that the incorrect invocation produced (accessible as $_ in the Catch block) in the Throw statement, the original command line is not leaked.