Functions/Get-PowerShellModuleInstallPath.ps1
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# Copyright 2012 Aaron Jensen # # 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. function Get-PowerShellModuleInstallPath { <# .SYNOPSIS Returns the path to the directory where you can install custom modules. .DESCRIPTION Custom modules should be installed under the `Program Files` directory. This function looks at the `PSModulePath` environment variable to find the install location under `Program Files`. If that path doesn't exist or isn't part of the `PSModulePath` environment variable, returns the module path under `$PSHOME`. If that path doesn't exist or isn't part of the `PSModulePath` environment variable, an error is written and nothing is returned. `Get-PowerShellModuleInstallPath` is new in Carbon 2.0. .EXAMPLE Get-PowerShellModuleInstallPath Demonstrates how to get the path where modules should be installed. #> [CmdletBinding()] [OutputType([string])] param( ) Set-StrictMode -Version 'Latest' Use-CallerPreference -Cmdlet $PSCmdlet -Session $ExecutionContext.SessionState $modulePaths = $env:PSModulePath -split ';' $installRoot = $modulePaths | Where-Object { $_ -like ('{0}\WindowsPowerShell*' -f $env:ProgramFiles) } if( -not $installRoot -or -not (Test-Path -Path $installRoot -PathType Container) ) { Write-Verbose ('Module path under ''{0}'' not found.' -f $env:ProgramFiles) $installRoot = $modulePaths | Where-Object { $_ -like ('{0}\*' -f $env:SystemRoot) } if( -not $installRoot -or -not (Test-Path -Path $installRoot -PathType Container) ) { Write-Verbose ('Module path under ''{0}'' not found.' -f $env:SystemRoot) Write-Error ('Module path under ''{0}'' and ''{1}'' not found.' -f $env:ProgramFiles,$env:SystemRoot) return } } return $installRoot } |