valentia

0.5.2.3

Functions/Helper/Utils/New-ValentiaZpPairs.ps1

function New-ValentiaZipPairs
{
    [CmdletBinding()]
    param
    (
        [parameter(mandatory = $false, Position = 0, ValueFromPipeline = 1, ValueFromPipelineByPropertyName = 1)]
        [PSObject[]]$first,
 
        [parameter(mandatory = $false, Position = 1, ValueFromPipelineByPropertyName = 1)]
        [PSObject[]]$second,

        [parameter(mandatory = $false, Position = 2, ValueFromPipelineByPropertyName = 1)]
        [scriptBlock]$resultSelector
    )

    process
    {
        if ([string]::IsNullOrWhiteSpace($first)){ break }        
        if ([string]::IsNullOrWhiteSpace($second)){ break }
        
        try
        {
            $e1 = @($first).GetEnumerator()

            while ($e1.MoveNext() -and $e2.MoveNext())
            {
                if ($PSBoundParameters.ContainsKey('resultSelector'))
                {
                    $first = $e1.Current
                    $second = $e2.Current
                    $context = $resultselector.InvokeWithContext(
                        $null,
                        ($psvariable),
                        {
                            (New-Object System.Management.Automation.PSVariable ("first", $first)),
                            (New-Object System.Management.Automation.PSVariable ("second", $second))
                        }
                    )
                    $context
                }
                else
                {
                    $tuple = New-Object 'System.Tuple[PSObject, PSObject]' ($e1.Current, $e2.current)
                    $tuple
                }
            }
        }
        finally
        {
            if(($d1 = $e1 -as [IDisposable]) -ne $null) { $d1.Dispose() }
            if(($d2 = $e2 -as [IDisposable]) -ne $null) { $d2.Dispose() }
            if(($d3 = $psvariable -as [IDisposable]) -ne $null) {$d3.Dispose() }
            if(($d4 = $context -as [IDisposable]) -ne $null) {$d4.Dispose() }
            if(($d5 = $tuple -as [IDisposable]) -ne $null) {$d5.Dispose() }
        }
    }

    begin
    {
        $e2 = @($second).GetEnumerator()
        $psvariable = New-Object 'System.Collections.Generic.List[System.Management.Automation.psvariable]'
    }
}