CygwinPS

0.1.0

Public/Get-Cygwin.ps1

                                using module ..\Private\Cygwin.psm1

<#

.SYNOPSIS

    Short description

.DESCRIPTION

    Long description

.EXAMPLE

    Example of how to use this cmdlet

.EXAMPLE

    Another example of how to use this cmdlet

.INPUTS

    Inputs to this cmdlet (if any)

.OUTPUTS

    Output from this cmdlet (if any)

.NOTES

    General notes

.COMPONENT

    The component this cmdlet belongs to

.ROLE

    The role this cmdlet belongs to

.FUNCTIONALITY

    The functionality that best describes this cmdlet

#>

function Get-Cygwin

{

    [CmdletBinding(DefaultParameterSetName = 'Env')]

    [OutputType('Cygwin.InstallInfo[]', ParameterSetName = 'Env')]

    [OutputType('Cygwin.Package[]', ParameterSetName = 'Packages')]

    param (

        # Specifies a path to one or more locations. Wildcards are permitted.

        [Parameter(Mandatory = $false, Position = 0, ParameterSetName = "Env",

            ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true,

            HelpMessage = "Path to one or more locations.")]

        [ValidateNotNullOrEmpty()]

        [SupportsWildcards()]

        [string[]] $Path,

        # List all installation - even if directory not exists.

        [Parameter()]

        [switch] $All,

        # List installed packages.

        [Parameter(ParameterSetName = 'Packages')]

        [switch] $ListInstalled

    )

    begin

    {

        # HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin

        $hklm = Get-ChildItem -Path HKLM:\SOFTWARE\Cygwin -Recurse -ErrorAction SilentlyContinue;

        # HKEY_CURRENT_USER\Software\Cygwin

        $hkcu = Get-ChildItem -Path HKCU:\SOFTWARE\Cygwin -Recurse -ErrorAction SilentlyContinue;

        # \Cygwin

        # - \Installations

        # - \setup

        $registry = @();

        foreach ($key in @($hklm + $hkcu))

        {

            $key.Property | ForEach-Object {

                $registry += [pscustomobject]@{

                    Path  = $key.Name;

                    Name  = $_;

                    Value = $key.GetValue($_);

                }

            }

        }

        [Cygwin.InstallInfo[]] $installInfos = $registry | Group-Object { $_.Value.TrimEnd('\\') -replace '^\\\?\?\\', '' } | ForEach-Object {

            [Cygwin.InstallInfo]::new($_.Name, $_.Group);

        }

    }

    process

    {

        [Cygwin.InstallInfo[]] $outputInstallInfos = $installInfos;

        if (-not($All))

        {

            $outputInstallInfos = $installInfos | Where-Object Exists;

        }

        if (($null -ne $Path) -and ($Path.Count -gt 0))

        {

            $_outputInstallInfos = @();

            $Path | ForEach-Object {

                $_path = $_.TrimEnd('\', '/');

                $_outputInstallInfos += $outputInstallInfos | Where-Object Path -like $_path;

            }

            $outputInstallInfos = $_outputInstallInfos;

        }

    }

    end

    {

        if ($ListInstalled)

        {

            return $outputInstallInfos | ForEach-Object { $_.GetInstalledPackages() };

        }

        return $outputInstallInfos;

    }

}

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# SIG # End signature block