Pass string array through nested Invoke-Expression - powershell

Question

My usecase consists 3 Scripts:
Script A.ps1 ← start script
Script B.ps1 ← script in the middle
Script C.ps1 ← target script to execute
Constraints: process spaces in path string[] array variables
Script A.ps1:
#SCRIPT EXPRESSION (TO PASS AS ARGUMENT)
$scriptC = "Script C.ps1"
$major = 1
$minor = 2
[string[]]$output = "Output A.txt", "Output B.txt", "Output C.txt"
$scriptExpression = 'powershell -File \"{0}\" -Major {1} -Minor {2} -Output {3}' -f ($scriptC, $major, $minor, $output)
Write-Host $scriptExpression -ForegroundColor Green
#SCRIPT EXPRESSION (TO CALL)
$scriptB = "Script B.ps1"
$config = "Debug"
$flag = 1
[string[]]$array = "String with space A", "String with space B"
$params = #("-File", "$scriptB", "-Config", $config, "-Flag", "$flag", "-ScriptExpression", $scriptExpression, "-Array", $array)
Write-Host "& powershell $params" -ForegroundColor Green
& powershell $params
Script B.ps1:
Param([string]$Config, [int]$Flag, [string]$ScriptExpression, [string[]]$Array)
Write-Host "`n_______________________________________________________________________________________`n"
Write-Host "Script B:`nConfig = $Config ($($Config.GetType()))`nFlag = $Flag ($($Flag.GetType()))`nScriptExpression = $ScriptExpression ($($ScriptExpression.GetType()))`nArray = $Array (Type: $($Array.GetType()) Length: $($Array.Length) <- WRONG LENGTH (2))" -ForegroundColor Yellow
Write-Host "`nCall Script C!" -ForegroundColor Yellow
Invoke-Expression $ScriptExpression
Script C.ps1:
Param([int]$Major, [int]$Minor, [string[]]$Output = #())
Write-Host "`n_______________________________________________________________________________________`n"
Write-Host "Script C:`nMajor = $Major ($($Major.GetType()))`nMinor = $Minor ($($Minor.GetType()))`nOutput = $Output (Type: $($Output.GetType()), Length: $($Output.Length)) <- WRONG EVERYTHING" -ForegroundColor Green
Output:
powershell -File \"Script C.ps1\" -Major 1 -Minor 2 -Output System.String[]
& powershell -File Script B.ps1 -Config Debug -Flag 1 -ScriptExpression powershell -File \"Script C.ps1\" -Major 1 -Minor 2 -Output System.String[] -Array System.String[]
_______________________________________________________________________________________
Script B:
Config = Debug (string)
Flag = 1 (int)
ScriptExpression = powershell -File "Script C.ps1" -Major 1 -Minor 2 -Output System.String[] (string)
Array = String with space A String with space B (Type: string[] Length: 1 ← WRONG LENGTH (2))
Call Script C!
_______________________________________________________________________________________
Script C:
Major = 1 (int)
Minor = 2 (int)
Output = System.String[] (Type: string[], Length: 1) ← WRONG EVERYTHING
How is it possible to pass these string[] arrays with spaces to another script?

Answer 1

I could achieve to call a Script C.ps1 from Script A.ps1 over Script B.ps1 with: (Content of Script B and C is in question)
$output = #("Output A.txt", "Output B.txt", "Output C.txt")
$array = #("String with space A", "String with space B")
#INVOKE EXPRESSION SCRIPT C
$varScript = $("'{0}\Script C.ps1'" -f ($PSScriptRoot))
$varMajor = 1
$varMinor = 2
$varOutput = "'" + $($output -join "','") + "'"
$expression = "& $varScript -Major $varMajor -Minor $varMinor -Output $varOutput"
$expression = """{0}""" -f ($expression) #WRAP IN DOUBLE QUOTES
#INVOKE EXPRESSION SCRIPT B
$varScript = $("'{0}\Script B.ps1'" -f ($PSScriptRoot))
$varConfig = "Debug"
$varFlag = 1
$varArray = "'" + $($array -join "','") + "'"
$call = "& $varScript -Config $varConfig -Flag $varFlag -ScriptExpression $expression -Array $varArray"
Invoke-Expression $call
Output:
Script B:
Config = Debug (string)
Flag = 1 (int)
ScriptExpression = & 'C:\ScriptTest\Script C.ps1' -Major 1 -Minor 2 -Output 'Output A.txt','Output B.txt','Output
C.txt' (string)
Array = String with space A String with space B (Type: string[] Length: 2)
Call Script C!
_______________________________________________________________________________________
Script C:
Major = 1 (int)
Minor = 2 (int)
Output = Output A.txt Output B.txt Output C.txt (Type: string[], Length: 3)
- Output A.txt
- Output B.txt
- Output C.txt