Config settings

config.json

{
    "ComparisonSettings": {
        "BaseFolder":"c:/temp/comparer",
        "SourceFolder": "Version971",
        "TargetFolder": "Version972",
        "WildCardSet": "x.x,y.y"
    }
}

Get-ConfigSettings.ps1

# Compare the content of a pair of folders using 
# command line Beyond Compare
cd C:/sandbox/PowerShell/CompareProject


# First needs to know where to get the configuration file...
# As this is a json file, parse it outside of PS to ensure that it is well-formed
$global:BaseDirectory = "C:/sandbox/PowerShell/CompareProject/"
$global:BaseConfig = "config.json"

try {
    $configFile = "$BaseDirectory$BaseConfig"
    if (!(Test-Path -Path $configFile)) {
        Write-Error -Message "Configuration file [$configFile] not found. Exiting..." -WarningAction
        throw
    }
    $configFile
	$global:Config = Get-Content $configFile -Raw | ConvertFrom-Json 
    $global:Config
    ${global:$}


# validate expected values are not null (improve this to previously save to an array)

$configPropertySet = $null
$configPropertySet = @{}
$baseFolder = $Config.ComparisonSettings.BaseFolder
$configPropertySet.Add("BaseFolder", $baseFolder)
$configPropertySet.Add("SourceFolder", [string]::Format("{0}/{1}", $baseFolder, $Config.ComparisonSettings.SourceFolder))
$configPropertySet.Add("TargetFolder", [string]::Format("{0}/{1}", $baseFolder, $config.ComparisonSettings.TargetFolder))
$configPropertySet.Add("WildCardSet", $($config.ComparisonSettings.WildCardSet).Split(","))

# Exit if any properties are null...

$configPropertySet.Keys | % {
    $currentKey = $_
    "Checking [$currentKey]..."
    if ($configPropertySet[$currentKey] -eq $null) {
       "The value for [$currentKey] is empty. Exiting..."
       throw
    }
}

"Number of configuration properties: [$($configPropertySet.Count)]"
$configPropertySet.Keys | % {
    $currentKey = $_
    "${currentKey}: [$($configPropertySet[$currentKey])]"
}

$wildCardSet = $configPropertySet["WildCardSet"]
$wildCardSet[0]
$wildCardSet[1]

}
catch {
"Here now"
throw
}

Testing the

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1. stuff1
2. stuff2