MapCalleeToCallerParams

MapCalleeToCallerParams

# Builds an [ordered] containing only params that were explicitly passed in.  With splatting, this
# this lets us call another script without overriding its default params.
function MapCalleeToCallerParams {
    param(
        # An [ordered] where the keys are param names in the script being called (the callee) and
        # values are param names in this script (the caller).
        [System.Collections.Specialized.OrderedDictionary][Parameter(Mandatory=$true)] $Mappings
    )

    $result = [ordered]@{}
    foreach ($mapping in $Mappings.GetEnumerator()) {
        $value = $null
        if ($MyInvocation.BoundParameters.TryGetValue($mapping.Value, [ref]$value)) {
            $result.Add($mapping.Key, $value);
        }
    }
    return $result
}