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authornoptuno <repollo.marrero@gmail.com>2023-04-28 02:40:47 +0200
committernoptuno <repollo.marrero@gmail.com>2023-04-28 02:40:47 +0200
commit6f6a73987201c9c303047c61389b82ad98b15597 (patch)
treebf67eb590d49979d6740bc1e94b4018df48bce98 /venv/bin/Activate.ps1
parentResolved merge conflicts and merged pr_218 into STREAMLIT_CHAT_IMPLEMENTATION (diff)
parentMerging PR_218 openai_rev package with new streamlit chat app (diff)
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+<#
+.Synopsis
+Activate a Python virtual environment for the current PowerShell session.
+
+.Description
+Pushes the python executable for a virtual environment to the front of the
+$Env:PATH environment variable and sets the prompt to signify that you are
+in a Python virtual environment. Makes use of the command line switches as
+well as the `pyvenv.cfg` file values present in the virtual environment.
+
+.Parameter VenvDir
+Path to the directory that contains the virtual environment to activate. The
+default value for this is the parent of the directory that the Activate.ps1
+script is located within.
+
+.Parameter Prompt
+The prompt prefix to display when this virtual environment is activated. By
+default, this prompt is the name of the virtual environment folder (VenvDir)
+surrounded by parentheses and followed by a single space (ie. '(.venv) ').
+
+.Example
+Activate.ps1
+Activates the Python virtual environment that contains the Activate.ps1 script.
+
+.Example
+Activate.ps1 -Verbose
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and shows extra information about the activation as it executes.
+
+.Example
+Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
+Activates the Python virtual environment located in the specified location.
+
+.Example
+Activate.ps1 -Prompt "MyPython"
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and prefixes the current prompt with the specified string (surrounded in
+parentheses) while the virtual environment is active.
+
+.Notes
+On Windows, it may be required to enable this Activate.ps1 script by setting the
+execution policy for the user. You can do this by issuing the following PowerShell
+command:
+
+PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+
+For more information on Execution Policies:
+https://go.microsoft.com/fwlink/?LinkID=135170
+
+#>
+Param(
+ [Parameter(Mandatory = $false)]
+ [String]
+ $VenvDir,
+ [Parameter(Mandatory = $false)]
+ [String]
+ $Prompt
+)
+
+<# Function declarations --------------------------------------------------- #>
+
+<#
+.Synopsis
+Remove all shell session elements added by the Activate script, including the
+addition of the virtual environment's Python executable from the beginning of
+the PATH variable.
+
+.Parameter NonDestructive
+If present, do not remove this function from the global namespace for the
+session.
+
+#>
+function global:deactivate ([switch]$NonDestructive) {
+ # Revert to original values
+
+ # The prior prompt:
+ if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
+ Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
+ Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
+ }
+
+ # The prior PYTHONHOME:
+ if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
+ Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
+ Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
+ }
+
+ # The prior PATH:
+ if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
+ Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
+ Remove-Item -Path Env:_OLD_VIRTUAL_PATH
+ }
+
+ # Just remove the VIRTUAL_ENV altogether:
+ if (Test-Path -Path Env:VIRTUAL_ENV) {
+ Remove-Item -Path env:VIRTUAL_ENV
+ }
+
+ # Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
+ if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
+ Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
+ }
+
+ # Leave deactivate function in the global namespace if requested:
+ if (-not $NonDestructive) {
+ Remove-Item -Path function:deactivate
+ }
+}
+
+<#
+.Description
+Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
+given folder, and returns them in a map.
+
+For each line in the pyvenv.cfg file, if that line can be parsed into exactly
+two strings separated by `=` (with any amount of whitespace surrounding the =)
+then it is considered a `key = value` line. The left hand string is the key,
+the right hand is the value.
+
+If the value starts with a `'` or a `"` then the first and last character is
+stripped from the value before being captured.
+
+.Parameter ConfigDir
+Path to the directory that contains the `pyvenv.cfg` file.
+#>
+function Get-PyVenvConfig(
+ [String]
+ $ConfigDir
+) {
+ Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
+
+ # Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
+ $pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
+
+ # An empty map will be returned if no config file is found.
+ $pyvenvConfig = @{ }
+
+ if ($pyvenvConfigPath) {
+
+ Write-Verbose "File exists, parse `key = value` lines"
+ $pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
+
+ $pyvenvConfigContent | ForEach-Object {
+ $keyval = $PSItem -split "\s*=\s*", 2
+ if ($keyval[0] -and $keyval[1]) {
+ $val = $keyval[1]
+
+ # Remove extraneous quotations around a string value.
+ if ("'""".Contains($val.Substring(0, 1))) {
+ $val = $val.Substring(1, $val.Length - 2)
+ }
+
+ $pyvenvConfig[$keyval[0]] = $val
+ Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
+ }
+ }
+ }
+ return $pyvenvConfig
+}
+
+
+<# Begin Activate script --------------------------------------------------- #>
+
+# Determine the containing directory of this script
+$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
+$VenvExecDir = Get-Item -Path $VenvExecPath
+
+Write-Verbose "Activation script is located in path: '$VenvExecPath'"
+Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
+Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
+
+# Set values required in priority: CmdLine, ConfigFile, Default
+# First, get the location of the virtual environment, it might not be
+# VenvExecDir if specified on the command line.
+if ($VenvDir) {
+ Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
+}
+else {
+ Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
+ $VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
+ Write-Verbose "VenvDir=$VenvDir"
+}
+
+# Next, read the `pyvenv.cfg` file to determine any required value such
+# as `prompt`.
+$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
+
+# Next, set the prompt from the command line, or the config file, or
+# just use the name of the virtual environment folder.
+if ($Prompt) {
+ Write-Verbose "Prompt specified as argument, using '$Prompt'"
+}
+else {
+ Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
+ if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
+ Write-Verbose " Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
+ $Prompt = $pyvenvCfg['prompt'];
+ }
+ else {
+ Write-Verbose " Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virtual environment)"
+ Write-Verbose " Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
+ $Prompt = Split-Path -Path $venvDir -Leaf
+ }
+}
+
+Write-Verbose "Prompt = '$Prompt'"
+Write-Verbose "VenvDir='$VenvDir'"
+
+# Deactivate any currently active virtual environment, but leave the
+# deactivate function in place.
+deactivate -nondestructive
+
+# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
+# that there is an activated venv.
+$env:VIRTUAL_ENV = $VenvDir
+
+if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
+
+ Write-Verbose "Setting prompt to '$Prompt'"
+
+ # Set the prompt to include the env name
+ # Make sure _OLD_VIRTUAL_PROMPT is global
+ function global:_OLD_VIRTUAL_PROMPT { "" }
+ Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
+ New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
+
+ function global:prompt {
+ Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
+ _OLD_VIRTUAL_PROMPT
+ }
+}
+
+# Clear PYTHONHOME
+if (Test-Path -Path Env:PYTHONHOME) {
+ Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
+ Remove-Item -Path Env:PYTHONHOME
+}
+
+# Add the venv to the PATH
+Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
+$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"