Functions/Get-VirtualEnv.ps1
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# =========================================================================== # Get-VirtualEnv.ps1 ------------------------------------------------------ # =========================================================================== # validaation ------------------------------------------------------------- # --------------------------------------------------------------------------- Class ValidateVirtualEnv : System.Management.Automation.IValidateSetValuesGenerator { [String[]] GetValidValues() { return [String[]] ((Get-VirtualEnv | Select-Object -ExpandProperty Name) + "" ) } } # function ---------------------------------------------------------------- # --------------------------------------------------------------------------- function Get-VirtualEnv { <# .SYNOPSIS Get all existing virtual environments in predefined system directory. .DESCRIPTION Return all existing virtual environments in predefined system directory as PSObject with version number. All available virtual environments can be accesed by automcompletion. .PARAMETER Name .PARAMETER Python .EXAMPLE PS C:\> Get-VirtualEnv Name Version ---- ------- venv 3.7.3 ----------- Description Return all existing virtual environments in predefined system directory. Flags 'Full' and 'Unformatted' does not have any implications if merely virtual environments are queried. .EXAMPLE PS C:\> ls-venv Name Version ---- ------- venv 3.7.3 Return all existing virtual environments in predefined system directory with predefined alias. .EXAMPLE PS C:\> Get-VirtualEnv -Name venv Name Version Latest ---- ------- ------ Click 7.0 pip 19.2.3 setuptools 41.2.0 wheel 0.33.6 ----------- Description Return information about all independent packages installed in the specified virtual environment 'venv' and shows potentially newer versions. Flags 'Full' lists additionally all packages of the virtual environment, and "Unformatted' does not pipe results to cmdlet 'Format-Table'. .EXAMPLE PS C:\> Get-VirtualEnv -Python Name Version Latest ---- ------- ------ pip 19.2.3 setuptools 41.2.0 virtualenv 16.6.1 ----------- Description RReturn information about all independent packages installed in the default python distribution. Flags 'Full' lists additionally all packages of the virtual environment, and "Unformatted' does not pipe results to cmdlet 'Format-Table'. .INPUTS System.Strings. Name of existing virtual environment. .OUTPUTS PSCustomObject. Object with contain information about all virtual environments. .NOTES #> [CmdletBinding(PositionalBinding=$True)] [OutputType([PSCustomObject])] Param ( [ValidateSet([ValidateVirtualEnv])] [Parameter(Position=1, ValueFromPipeline=$True, HelpMessage="Information about all packages installed in the specified virtual environment will be returned.")] [System.String] $Name, [Parameter(HelpMessage="If switch 'Python' is true, information about all packages installed in the default python distribution will be returned.")] [Switch] $Python, [Parameter(HelpMessage="Return information about required packages.")] [Switch] $Full, [Parameter(HelpMessage="Return information not as readable table with additional details.")] [Switch] $Unformatted ) Process { # return information about python distribution if ($Python) { return $(Get-VirtualEnvPackage -Python $PSVirtualEnv.Python -full:$Full -Unformatted:$Unformatted) } # return information about specified virtual distribution if ($Name) { # check whether the specified virtual environment exists if (-not $(Test-VirtualEnv -Name $Name -Verbose)){ Get-VirtualEnv return $Null } return $(Get-VirtualEnvPackage -Python $(Get-VirtualPython -Name $Name) -full:$Full -Unformatted:$Unformatted) } # return information about all virtual environments in the predefined system directory are gathered if (-not $Name -and -not $Python) { # get all virtual environment directories in predefined system directory as well as the local directories and requirement files $virtualEnvSubDirs = Get-ChildItem -Path $PSVirtualEnv.WorkDir | Select-Object -ExpandProperty Name $virtualEnvs = $Null # call the python distribution of each virtual environnment and determine the version number if ($VirtualEnvSubDirs.length) { $virtualEnvs= $VirtualEnvSubDirs | ForEach-Object { if (Test-VirtualEnv -Name $_) { # set environment variable, get name of virtual environment and python version and set the pythonhome variable in scope process to the stored backup variable Set-VirtualEnvSystem -Name $_ $python_venv = Get-VirtualPython -Name $_ [PSCustomObject]@{ Name = $_ Version = (((. $python_venv --version 2>&1) -replace "`r|`n","") -split " ")[1] } Restore-VirtualEnvSystem } } return $virtualEnvs } else { Write-FormattedError -Message "In predefined system directory do not exist any virtual environments" -Module $PSVirtualEnv.Name -Space } } } } # function ---------------------------------------------------------------- # --------------------------------------------------------------------------- function Get-VirtualEnvPackage { <# .DESCRIPTION Gets the properties of all packages in a python environment. .PARAMETER Python .OUTPUTS PSCustomObject. Properties of all packages in a python environment #> [CmdletBinding(PositionalBinding=$True)] [OutputType([PSCustomObject])] Param ( [Parameter(Position=1, Mandatory=$True, ValueFromPipeline=$True, HelpMessage="Executable of system's python distribution or of a virtual environment.")] [System.String] $Python, [Parameter(HelpMessage="Return information about required packages.")] [Switch] $Full, [Parameter(HelpMessage="Return information not as readable table with additional details.")] [Switch] $Unformatted ) Set-VirtualEnvSystem -Python $Python # get all packages in the specified virtual environment, get all outdated packages and get all independent packages $venv_package = . $Python -m pip list --format json | ConvertFrom-Json $venv_outdated = . $Python -m pip list --format json --outdated | ConvertFrom-Json $venv_independent = . $Python -m pip list --format json --not-required | ConvertFrom-Json # combine all gathered properties about the packages in the specified virtual environment $venv_package = $venv_package | ForEach-Object{ $package = $_ $package_outdated = $venv_outdated | Where-Object {$_.Name -eq $package.Name} $package_independent = $venv_independent | Where-Object {$_.Name -eq $Package.Name} [PSCustomObject]@{ Name = $package.Name Version = $package.Version Latest = $package_outdated.Latest Required = if ( $package_independent ) {$Null} else {$True} } } # return all packages which are independent from others in a separated table $result = $venv_package # | Format-Table -Property Name, Version, Latest $result = $venv_package | Where-Object {-not $_.Required} if ($Full) { $requires_dict = @{} $result | ForEach-Object{ $package = $_.Name $result_info = . $Python -m pip show $package $result_info | ForEach-Object{ $result_requires = $_ -Split "^Requires: " if ($result_requires.Length -gt 1){ foreach($required_package in ($result_requires[1] -Split ", ")){ $requires_dict[$required_package] = $package } } } } Restore-VirtualEnvSystem $result_required = $venv_package | Where-Object {$_.Required} $result_required | ForEach-Object { if ($requires_dict.ContainsKey($_.Name)) { $_ | Add-Member -MemberType NoteProperty -Name "Required-by" -Value $requires_dict[$_.Name] } } } if ($Unformatted){ return $result, $result_required } else { return ($result | Format-Table -Property Name, Version, Latest), ($result_required | Format-Table -Property Name, Version, Required-by, Latest) } } |