completers/psinfo_completer/psinfo_completer.ps1
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# psinfo tab completion for PowerShell # Static-first native completer for PsInfo with safe filter and remote-target hints. Set-StrictMode -Version 2.0 function Initialize-PsInfoCompletionCatalog { if (Get-Variable -Name PsInfoCompletionCatalog -Scope Script -ErrorAction Ignore) { return } $script:PsInfoCompletionCatalog = @{ Switches = @( [pscustomobject]@{ Token = '-u'; Description = 'Optional user name for login to the remote computer.'; TakesValue = $true; ValueKind = 'User' } [pscustomobject]@{ Token = '-p'; Description = 'Optional password for the remote computer user name.'; TakesValue = $true; ValueKind = 'Password' } [pscustomobject]@{ Token = '-h'; Description = 'Show installed hotfixes.'; TakesValue = $false } [pscustomobject]@{ Token = '-s'; Description = 'Show installed software.'; TakesValue = $false } [pscustomobject]@{ Token = '-d'; Description = 'Show disk volume information.'; TakesValue = $false } [pscustomobject]@{ Token = '-c'; Description = 'Print in CSV format.'; TakesValue = $false } [pscustomobject]@{ Token = '-t'; Description = 'Delimiter used with -c. Use "\t" for tab.'; TakesValue = $true; ValueKind = 'Delimiter' } [pscustomobject]@{ Token = '-nobanner'; Description = 'Do not display the startup banner and copyright message.'; TakesValue = $false } [pscustomobject]@{ Token = '-accepteula'; Description = 'Suppress the Sysinternals license dialog.'; TakesValue = $false } [pscustomobject]@{ Token = '-?'; Description = 'Display PsInfo help.'; TakesValue = $false; Terminal = $true } [pscustomobject]@{ Token = '/?'; Description = 'Display PsInfo help.'; TakesValue = $false; Terminal = $true } ) # PsInfo filters by field-label prefix; these are the labels PsInfo v1.79 prints. FilterHints = @( 'uptime', 'kernel version', 'product type', 'product version', 'service pack', 'kernel build number', 'registered organization', 'registered owner', 'ie version', 'system root', 'processors', 'processor speed', 'processor type', 'physical memory', 'video driver' ) # ',' ';' and '|' are PowerShell syntax, so every delimiter except \t must reach PsInfo quoted. DelimiterHints = @(',', ';', '|', ':', '\t') } } function New-PsInfoCompletionResult { param([string]$CompletionText, [string]$ResultType, [string]$ToolTip, [string]$ListItemText) if ([string]::IsNullOrWhiteSpace($ListItemText)) { $ListItemText = $CompletionText } if ([string]::IsNullOrWhiteSpace($ToolTip)) { $ToolTip = $CompletionText } [System.Management.Automation.CompletionResult]::new($CompletionText, $ListItemText, $ResultType, $ToolTip) } function Get-PsInfoCurrentToken { param([string]$Line, [int]$CursorPosition, [string]$Fallback) if ([string]::IsNullOrWhiteSpace($Line)) { return $Fallback } $safeCursor = [Math]::Min([Math]::Max($CursorPosition, 0), $Line.Length) $prefix = $Line.Substring(0, $safeCursor) if ($prefix -match '\s$') { return '' } $parts = @([regex]::Matches($prefix, '"[^"]*"|\S+') | ForEach-Object { $_.Value }) if ($parts.Count -gt 0) { return $parts[-1] } $Fallback } function Remove-PsInfoOuterQuotes { param([string]$Value) if ([string]::IsNullOrEmpty($Value)) { return '' } if ($Value.Length -ge 2 -and $Value.StartsWith('"') -and $Value.EndsWith('"')) { return $Value.Substring(1, $Value.Length - 2) } $Value.TrimStart('"') } function ConvertTo-PsInfoQuotedValue { param([string]$Value, [bool]$AlwaysQuote = $false) if ([string]::IsNullOrWhiteSpace($Value)) { return $Value } if (($AlwaysQuote -or $Value -match '\s') -and -not ($Value.StartsWith('"') -and $Value.EndsWith('"'))) { return '"' + $Value.Replace('`', '``').Replace('"', '`"') + '"' } $Value } function Get-PsInfoArgumentState { param([System.Management.Automation.Language.CommandAst]$CommandAst, [string]$WordToComplete, [int]$CursorPosition) $currentWord = if ([string]::IsNullOrEmpty($WordToComplete)) { '' } else { Get-PsInfoCurrentToken -Line $CommandAst.Extent.Text -CursorPosition ($CursorPosition - $CommandAst.Extent.StartOffset) -Fallback $WordToComplete } # Only elements that end before the cursor are consumed; the token under the cursor and anything after it are not. $tokensBeforeCurrent = @( $CommandAst.CommandElements | Select-Object -Skip 1 | Where-Object { $_.Extent.EndOffset -lt $CursorPosition } | ForEach-Object { $_.Extent.Text } ) [pscustomobject]@{ CurrentWord = $currentWord TokensBeforeCurrent = $tokensBeforeCurrent } } function Get-PsInfoAtFileCompletions { param([string]$CurrentWord) $trimmed = Remove-PsInfoOuterQuotes -Value $CurrentWord if (-not $trimmed.StartsWith('@')) { return @() } $pathPortion = $trimmed.Substring(1) if ([string]::IsNullOrWhiteSpace($pathPortion)) { $parent = '.' $leaf = '' } else { $parent = Split-Path -Path $pathPortion -Parent if ([string]::IsNullOrWhiteSpace($parent)) { $parent = '.' } $leaf = Split-Path -Path $pathPortion -Leaf } $filter = if ([string]::IsNullOrWhiteSpace($leaf)) { '*' } else { "$leaf*" } $alwaysQuote = -not [string]::IsNullOrEmpty($CurrentWord) -and $CurrentWord.StartsWith('"') $results = foreach ($item in @(Get-ChildItem -Path $parent -Filter $filter -ErrorAction SilentlyContinue)) { $completionPath = if ($pathPortion -and -not [System.IO.Path]::IsPathRooted($pathPortion) -and $parent -ne '.') { Join-Path -Path $parent -ChildPath $item.Name } elseif ($parent -eq '.') { $item.Name } else { $item.FullName } if ($item.PSIsContainer -and -not $completionPath.EndsWith([System.IO.Path]::DirectorySeparatorChar)) { $completionPath += [System.IO.Path]::DirectorySeparatorChar } New-PsInfoCompletionResult -CompletionText (ConvertTo-PsInfoQuotedValue -Value ('@' + $completionPath) -AlwaysQuote:$alwaysQuote) -ListItemText ('@' + $item.Name) -ResultType 'ParameterValue' -ToolTip 'File containing remote computer names for @file syntax.' } if (@($results).Count -eq 0) { return @( New-PsInfoCompletionResult -CompletionText $(if ([string]::IsNullOrWhiteSpace($CurrentWord)) { '@file' } else { $CurrentWord }) -ResultType 'ParameterValue' -ToolTip 'File containing remote computer names for @file syntax.' ) } @($results) } function Complete-PsInfo { param( [string]$WordToComplete, [System.Management.Automation.Language.CommandAst]$CommandAst, [int]$CursorPosition ) Initialize-PsInfoCompletionCatalog $state = Get-PsInfoArgumentState -CommandAst $CommandAst -WordToComplete $WordToComplete -CursorPosition $CursorPosition $currentWord = $state.CurrentWord $tokensBeforeCurrent = @($state.TokensBeforeCurrent) $switchLookup = @{} foreach ($spec in $script:PsInfoCompletionCatalog.Switches) { $switchLookup[$spec.Token.ToLowerInvariant()] = $spec } $used = @{} $valueContext = $null $remoteTarget = $null $filter = $null for ($i = 0; $i -lt $tokensBeforeCurrent.Count; $i++) { $token = $tokensBeforeCurrent[$i] $key = $token.ToLowerInvariant() if ($switchLookup.ContainsKey($key)) { $used[$key] = $true $spec = $switchLookup[$key] if ($spec.TakesValue) { if ($i -eq ($tokensBeforeCurrent.Count - 1)) { $valueContext = $spec.ValueKind; break } $i++ } continue } if (-not $remoteTarget -and ((Remove-PsInfoOuterQuotes -Value $token).StartsWith('\\') -or (Remove-PsInfoOuterQuotes -Value $token).StartsWith('@'))) { $remoteTarget = $token continue } if (-not $filter) { $filter = $token } } switch ($valueContext) { 'User' { if (-not [string]::IsNullOrWhiteSpace($currentWord)) { return @(New-PsInfoCompletionResult -CompletionText $currentWord -ResultType 'ParameterValue' -ToolTip 'Remote user name.') } return @( New-PsInfoCompletionResult -CompletionText '<username>' -ResultType 'ParameterValue' -ToolTip 'Remote user name.' New-PsInfoCompletionResult -CompletionText '<domain\user>' -ResultType 'ParameterValue' -ToolTip 'Remote user name in Domain\User syntax.' ) } 'Password' { return @(New-PsInfoCompletionResult -CompletionText $(if ([string]::IsNullOrWhiteSpace($currentWord)) { '<password>' } else { $currentWord }) -ResultType 'ParameterValue' -ToolTip 'Remote password value.') } 'Delimiter' { return @($script:PsInfoCompletionCatalog.DelimiterHints | ForEach-Object { $text = if ($_ -eq '\t') { $_ } else { ConvertTo-PsInfoQuotedValue -Value $_ -AlwaysQuote $true } New-PsInfoCompletionResult -CompletionText $text -ListItemText $_ -ResultType 'ParameterValue' -ToolTip 'Delimiter used with -c.' }) } } if ($currentWord.StartsWith('@') -or $currentWord.StartsWith('"@')) { return Get-PsInfoAtFileCompletions -CurrentWord $currentWord } $results = New-Object System.Collections.Generic.List[object] if (-not $remoteTarget) { foreach ($target in @('\\<computer>', '\\localhost', '\\*', '@file')) { if ([string]::IsNullOrWhiteSpace($currentWord) -or $target.StartsWith((Remove-PsInfoOuterQuotes -Value $currentWord), [System.StringComparison]::OrdinalIgnoreCase)) { [void]$results.Add((New-PsInfoCompletionResult -CompletionText $target -ResultType 'ParameterValue' -ToolTip 'Remote target placeholder for PsInfo.')) } } } foreach ($spec in $script:PsInfoCompletionCatalog.Switches) { $key = $spec.Token.ToLowerInvariant() if ($used.ContainsKey($key)) { continue } $isTerminal = [bool]($spec.PSObject.Properties['Terminal'] -and $spec.Terminal) if ($isTerminal -and $tokensBeforeCurrent.Count -gt 0) { continue } if (($key -in @('-u', '-p')) -and -not $remoteTarget) { continue } if ($key -eq '-t' -and -not $used.ContainsKey('-c')) { continue } if (-not [string]::IsNullOrWhiteSpace($currentWord) -and -not $spec.Token.StartsWith($currentWord, [System.StringComparison]::OrdinalIgnoreCase)) { continue } [void]$results.Add((New-PsInfoCompletionResult -CompletionText $spec.Token -ResultType 'ParameterName' -ToolTip $spec.Description)) } if (-not $filter) { foreach ($hint in $script:PsInfoCompletionCatalog.FilterHints) { if ([string]::IsNullOrWhiteSpace($currentWord) -or $hint.StartsWith((Remove-PsInfoOuterQuotes -Value $currentWord), [System.StringComparison]::OrdinalIgnoreCase)) { $alwaysQuote = -not [string]::IsNullOrEmpty($currentWord) -and $currentWord.StartsWith('"') [void]$results.Add((New-PsInfoCompletionResult -CompletionText (ConvertTo-PsInfoQuotedValue -Value $hint -AlwaysQuote $alwaysQuote) -ListItemText $hint -ResultType 'ParameterValue' -ToolTip 'PsInfo field label prefix; only the matching field is printed.')) } } } @($results.ToArray()) } Register-ArgumentCompleter -Native -CommandName @('psinfo', 'psinfo.exe') -ScriptBlock { param($wordToComplete, $commandAst, $cursorPosition) Complete-PsInfo -WordToComplete $wordToComplete -CommandAst $commandAst -CursorPosition $cursorPosition } |