functions/Compare-Script.ps1
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Function Compare-Script { [cmdletbinding()] [OutputType("PSCustomObject")] [alias("csc")] Param ( [Parameter( Position = 0, ValueFromPipelineByPropertyName )] [ValidateNotNullorEmpty()] [Alias("scriptname")] [string]$Name, [ValidateNotNullorEmpty()] [string]$Gallery = "PSGallery" ) Begin { Write-Verbose "[BEGIN ] Starting: $($MyInvocation.Mycommand)" $progParam = @{ Activity = $MyInvocation.MyCommand Status = "Getting installed scripts" CurrentOperation = "Get-InstalledScript" PercentComplete = 25 } Write-Progress @progParam } #begin Process { $gscParams = @{} if ($Name) { $gscParams.Add("Name", $Name) } $installed = @(Get-InstalledScript @gscParams) if ($installed) { $progParam.Status = "Getting online scripts" $progParam.CurrentOperation = "Find-Script -Repository $Gallery" $progParam.PercentComplete = 50 Write-Progress @progParam $fscParams = @{ Repository = $Gallery ErrorAction = "Stop" } if ($Name) { $fscParams.Add("Name", $Name) } Try { $online = @(Find-Script @fscParams) } Catch { Write-Warning "Failed to find online script(s). $($_.Exception.message)" } $progParam.status = "Comparing $($installed.count) installed scripts to $($online.count) online scripts." $progParam.percentComplete = 80 Write-Progress @progParam $data = ($online).Where( {$installed.name -contains $_.name}) | Select-Object -property Name, @{Name = "OnlineVersion"; Expression = {$_.Version}}, @{Name = "InstalledVersion"; Expression = { #save the name from the incoming online object $name = $_.Name $installed.Where( {$_.name -eq $name}).Version -join ","} }, PublishedDate, @{Name = "UpdateNeeded"; Expression = { $name = $_.Name #there could be multiple versions installed #only need to compare the last one $mostRecentVersion = $installed.Where( {$_.name -eq $name}).Version | Sort-Object -Descending | Select-Object -first 1 #need to ensure that PowerShell compares version objects and not strings If ([version]$_.Version -gt [version]$mostRecentVersion) { $result = $True } else { $result = $False } $result } } | Sort-Object -Property Name $progParam.PercentComplete = 100 $progParam.Completed = $True Write-Progress @progparam #write the results to the pipeline $data } else { Write-Warning "No local script or scripts found" } } #Progress End { Write-Verbose "[END ] Ending: $($MyInvocation.Mycommand)" } #end } #close function |