Cloud.Ready.Software.NAV

1.0.3.16

ModelTools/Get-NAVHighestVersionList.ps1

function Get-NAVHighestVersionList
{
    param (
        [String]$VersionList1,
        [String]$VersionList2,
        [String]$Prefix
    )
   
    if ([string]::IsNullOrEmpty($Versionlist1)){return $VersionList2}
    if ([string]::IsNullOrEmpty($Versionlist2)){return $VersionList1}

    if ($VersionList1 -eq $VersionList2) {
        return $VersionList1
    }

    try{        
        if ([String]::IsNullOrEmpty($Prefix)) {
            [int[]] $SplitVersionlist1 = $VersionList1.split('.')
            [int[]] $SplitVersionlist2 = $VersionList2.split('.')
        } else {
            [int[]] $SplitVersionlist1 = $VersionList1.Replace($Prefix,'').split('.')
            [int[]] $SplitVersionlist2 = $VersionList2.Replace($Prefix,'').split('.')
        }
    } catch {
        $ReturnVersionList = $VersionList2
        try{
            [int[]] $SplitVersionlist2 = $VersionList2.Replace($Prefix,'').split('.')    
        } Catch {
            $ReturnVersionList = $VersionList1
        }

        $WarningMessage = "`r`nVersionlists are probably too unstructured to compare."
        $WarningMessage += "`r`n VersionList1 : $VersionList1"
        $WarningMessage += "`r`n VersionList2 : $VersionList2"
        $WarningMessage += "`r`n Prefix : $Prefix"        
        $WarningMessage += "`r`n Returned value: $ReturnVersionList"
        $WarningMessage += "`r`nNo further action required is this is OK."

         
        Write-Warning -Message $WarningMessage
        return $ReturnVersionList
    }

    $Count = $SplitVersionlist1.Count
    if ($SplitVersionlist2.count -gt $count){
        $Count = $SplitVersionlist2.Count
    }

    $HighestVersionList = ''
    $FoundHighestVersion = $false 
    for ($i=0;$i -lt $Count;$i++){
        if ($SplitVersionlist1[$i] -gt $SplitVersionlist2[$i]){
            $HighestVersionList = $VersionList1
        }
        if ($SplitVersionlist2[$i] -gt $SplitVersionlist1[$i]){
            $HighestVersionList = $VersionList2            
        }
        if ($HighestVersionList -ne ''){
            $i = $Count
            $FoundHighestVersion = $true
        }
    }

    if ($FoundHighestVersion -eq $false) {
        # even there was a difference indicated the system did not found any within the INTEGER Compare
        # most likly we can fall back to longer one of the versions (happens with 0 vs 00)
        if ($Versionlist1.Length -gt $Versionlist2.Length){
            $HighestVersionList = $VersionList1
        } else {
            $HighestVersionList = $VersionList2
        }
    }
 
    return $HighestVersionList

}