Functions/Test-VirtualEnv.ps1
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# =========================================================================== # Test-VirtualEnv.ps1 ----------------------------------------------------- # =========================================================================== # function ---------------------------------------------------------------- # --------------------------------------------------------------------------- function Test-VirtualEnv { <# .SYNOPSIS Checks if there exists a specific virtual environment. .DESCRIPTION Checks if there exists a specific virtual environment in the predefined directory. .PARAMETER Name .EXAMPLE PS C:\> Test-VirtualEnv -Name venv True ----------- Description Checks whether the virtual environment 'venv' exists. .INPUTS System.String. Name of virtual environment to be tested. .OUTPUTS Boolean. True if the specified virtual environment exists. #> [CmdletBinding(PositionalBinding)] [OutputType([Boolean])] Param( [Parameter(Position=1, ValueFromPipeline, HelpMessage="Name of virtual environment to be tested.")] [System.String] $Name ) Process { # check whether a virtual environment is specified if (!$Name) { Write-FormattedError -Message "There is no virtual environment specified." -Module $PSVirtualEnv.Name -Space -Silent:(!$VerbosePreference) return $False } # check whether the test of a python distribution is specified if($Name -eq "python") { if (Find-Python){ return $True } } # check if there exists the specified virtual environment in the predefined directory if ( -not $(Get-ChildItem $PSVirtualEnv.WorkDir | Where-Object {$_.Name -eq $Name} )) { Write-FormattedError -Message "The virtual environment '$Name' does not exist." -Module $PSVirtualEnv.Name -Space -Silent:(!$VerbosePreference) return $False } # get the full path of the specified virtual environment, which is located in the predefined system path and test the resulting path if ( -not $(Test-Path $(Get-VirtualEnvActivationScript -Name $Name) )) { Write-FormattedError -Message "Unable to find the activation script. The virtual environment '$Name' seems compromized." -Module $PSVirtualEnv.Name -Space -Silent:(!$VerbosePreference) return $False } return $True } } |