Functions/GenXdev.FileSystem/Set-LocationParent4.cs
// ################################################################################
// Part of PowerShell module : GenXdev.FileSystem // Original cmdlet filename : Set-LocationParent4.cs // Original author : René Vaessen / GenXdev // Version : 1.304.2025 // ################################################################################ // 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. // ################################################################################ using System.Management.Automation; namespace GenXdev.FileSystem { /// <summary> /// <para type="synopsis"> /// Navigates up four directory levels in the filesystem hierarchy. /// </para> /// /// <para type="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. /// </para> /// /// <example> /// <para>Set-LocationParent4</para> /// <para>Navigates up four directory levels from the current location.</para> /// <code> /// Set-LocationParent4 /// </code> /// </example> /// /// <example> /// <para>.....</para> /// <para>Uses the alias to navigate up four directory levels.</para> /// <code> /// ..... /// </code> /// </example> /// </summary> [Cmdlet(VerbsCommon.Set, "LocationParent4", SupportsShouldProcess = true)] [Alias(".....")] [OutputType(typeof(PSObject))] public class SetLocationParent4Command : PSGenXdevCmdlet { /// <summary> /// Begin processing - initialization logic /// </summary> protected override void BeginProcessing() { // Write verbose message indicating start of navigation WriteVerbose("Starting navigation up four directory levels from " + SessionState.Path.CurrentLocation.Path); } /// <summary> /// Process record - main cmdlet logic for navigating up directories /// </summary> protected override void ProcessRecord() { // Loop through four levels of navigation for (int i = 1; i <= 4; i++) { // Get the parent directory of current location var parentResult = InvokeCommand.InvokeScript( "Microsoft.PowerShell.Management\\Split-Path -Path " + "(Microsoft.PowerShell.Management\\Get-Location) -Parent"); // Check if parent is null (at root level) if (parentResult.Count == 0 || parentResult[0] == null) { // Write verbose message when cannot go up further WriteVerbose("Cannot go up further - at root level"); break; } // Get the parent path as string string parentPath = parentResult[0].ToString(); // Prepare target description for ShouldProcess string target = $"from '{SessionState.Path.CurrentLocation.Path}' to " + $"'{parentPath}' (level {i} of 4)"; // Only navigate if ShouldProcess returns true if (ShouldProcess(target, "Change location")) { // Change to the parent directory InvokeCommand.InvokeScript( $"Microsoft.PowerShell.Management\\Set-Location -LiteralPath '{parentPath}'"); } else { // Exit the loop if user declined break; } } // Check WhatIf preference bool whatIfPreference = (bool)(SessionState.PSVariable.GetValue("WhatIfPreference") ?? false); // Show contents of the new current directory if not in WhatIf mode and on FileSystem provider if (!whatIfPreference && SessionState.Path.CurrentLocation.Provider.Name == "FileSystem") { // Get child items and output them var childItems = InvokeCommand.InvokeScript("Microsoft.PowerShell.Management\\Get-ChildItem"); WriteObject(childItems, true); } } /// <summary> /// End processing - cleanup logic /// </summary> protected override void EndProcessing() { // Write verbose message indicating completion WriteVerbose("Completed navigation. New location: " + SessionState.Path.CurrentLocation.Path); } } } |