Functions/GenXdev.FileSystem/Set-LocationParent4.ps1

<##############################################################################
Part of PowerShell module : GenXdev.FileSystem
Original cmdlet filename : Set-LocationParent4.ps1
Original author : René Vaessen / GenXdev
Version : 1.300.2025
################################################################################
Copyright (c) René Vaessen / GenXdev
 
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
 
    http://www.apache.org/licenses/LICENSE-2.0
 
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
################################################################################>

###############################################################################
<#
.SYNOPSIS
Navigates up four directory levels in the filesystem hierarchy.
 
.DESCRIPTION
Provides a convenient way to move up four directory levels from the current
location in the filesystem. After navigation, displays the contents of the
resulting directory.
 
.EXAMPLE
Set-LocationParent4
 
.EXAMPLE
.....
 
.NOTES
The alias '.....'' represents moving up four parent directories, where each dot
represents one level up.
#>

function Set-LocationParent4 {

    [CmdletBinding(SupportsShouldProcess)]
    [Alias('.....')]
    param()

    begin {

        Microsoft.PowerShell.Utility\Write-Verbose "Starting navigation up four directory levels from $(Microsoft.PowerShell.Management\Get-Location)"
    }


    process {

        # navigate up four levels
        for ($i = 1; $i -le 4; $i++) {

            # check if we can move up before attempting
            $parent = Microsoft.PowerShell.Management\Split-Path -Path (Microsoft.PowerShell.Management\Get-Location) -Parent
            if ($null -eq $parent) {
                Microsoft.PowerShell.Utility\Write-Verbose 'Cannot go up further - at root level'
                break
            }

            # prepare target description for ShouldProcess
            $target = "from '$(Microsoft.PowerShell.Management\Get-Location)' to '$parent' (level $i of 4)"

            # only navigate if ShouldProcess returns true
            if ($PSCmdlet.ShouldProcess($target, 'Change location')) {
                Microsoft.PowerShell.Management\Set-Location -LiteralPath $parent
            }
            else {
                # exit the loop if user declined
                break
            }
        }

        # show contents of the new current directory if not in WhatIf mode
        if (-not $WhatIfPreference -and (Microsoft.PowerShell.Management\Get-Location).Provider.Name -eq 'FileSystem') {
            Microsoft.PowerShell.Management\Get-ChildItem
        }
    }

    end {

        Microsoft.PowerShell.Utility\Write-Verbose "Completed navigation. New location: $PWD"
    }
}