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August 12, 2019 19:23
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using namespace System.Collections.Generic | |
using namespace System.Management.Automation | |
using namespace System.Security.AccessControl | |
using namespace Microsoft.Win32 | |
function Get-InstalledSoftware { | |
[CmdletBinding()] | |
param( | |
[Parameter(ValueFromPipeline)] | |
[ValidateNotNullOrEmpty()] | |
[SupportsWildcards()] | |
[string] $Name | |
) | |
begin { | |
$allNames = $null | |
} | |
process { | |
if (-not $PSBoundParameters.ContainsKey('Name') -or [string]::IsNullOrEmpty($Name)) { | |
return | |
} | |
if ($null -eq $allNames) { | |
$startingCapacity = 1 | |
if ($MyInvocation.ExpectingInput) { | |
$startingCapacity = 4 | |
} | |
$allNames = [List[string]]::new($startingCapacity) | |
} | |
$allNames.Add($Name) | |
} | |
end { | |
if ($null -ne $allNames) { | |
$wildcards = [WildcardPattern[]]::new($allNames.Count) | |
for ($i = 0; $i -lt $allNames.Count; $i++) { | |
$wildcards[$i] = [WildcardPattern]::new( | |
$allNames[$i], | |
[WildcardOptions]::IgnoreCase) | |
} | |
} | |
# Don't use the registry provider for performance and to allow us to open the | |
# 64 bit registry view from a 32 bit process. | |
$hklm = $null | |
$ownsKey = $false | |
try { | |
$registryPaths = ( | |
@{ | |
Path = 'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall' | |
Is64Bit = $true | |
}, | |
@{ | |
Path = 'SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall' | |
Is64Bit = $false | |
}) | |
$hklm = [Registry]::LocalMachine | |
if (-not [Environment]::Is64BitProcess) { | |
if ([Environment]::Is64BitOperatingSystem) { | |
$ownsKey = $true | |
$hklm = [RegistryKey]::OpenBaseKey( | |
[RegistryHive]::LocalMachine, | |
[RegistryView]::Registry64) | |
} else { | |
$registryPaths = @($registryPaths[0]) | |
$registryPaths[0].Is64Bit = $false | |
} | |
} | |
foreach ($registryPath in $registryPaths) { | |
$software = $null | |
try { | |
$software = $hklm.OpenSubKey($registryPath.Path) | |
foreach ($subKeyName in $software.GetSubKeyNames()) { | |
$subKey = $null | |
try { | |
$subKey = $software.OpenSubKey( | |
$subKeyName, | |
[RegistryRights]::QueryValues) | |
$displayName = $subKey.GetValue('DisplayName') | |
if ([string]::IsNullOrEmpty($displayName)) { | |
continue | |
} | |
if ($wildcards.Length -gt 0) { | |
$wasMatchFound = $false | |
foreach ($wildcard in $wildcards) { | |
if ($wildcard.IsMatch($displayName)) { | |
$wasMatchFound = $true | |
break | |
} | |
} | |
if (-not $wasMatchFound) { | |
continue | |
} | |
} | |
$installedOn = $subKey.GetValue('InstallDate') | |
if (-not [string]::IsNullOrWhiteSpace($installedOn)) { | |
$installedOn = [datetime]::ParseExact($installedOn, 'yyyyMMdd', $null) | |
} | |
# yield | |
[PSCustomObject]@{ | |
PSTypeName = 'Utility.InstalledSoftware' | |
Name = $displayName | |
Publisher = $subKey.GetValue('Publisher') | |
DisplayVersion = $subKey.GetValue('DisplayVersion') | |
Uninstall = $subKey.GetValue('UninstallString') | |
Guid = $subKeyName | |
InstallDate = $installedOn | |
Is64Bit = $registryPath.Is64Bit | |
PSPath = 'Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\{0}\{1}' -f ( | |
$registryPath.Path, | |
$subKeyName) | |
} | |
} catch { | |
$PSCmdlet.WriteError($PSItem) | |
} finally { | |
if ($null -ne $subKey) { | |
$subKey.Dispose() | |
} | |
} | |
} | |
} finally { | |
if ($null -ne $software) { | |
$software.Dispose() | |
} | |
} | |
} | |
} finally { | |
if ($ownsKey -and $null -ne $hklm) { | |
$hklm.Dispose() | |
} | |
} | |
} | |
} |
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just tried code at a glance ```