Languages/Python/Templates/Python-Template-UntilLoop.ps1
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function Template.UntilLoop.py { <# .SYNOPSIS Template for a Python `until` Loop .DESCRIPTION Template for a `until` loop in Python. .NOTES There is not a proper `do` or `until` loop in Python, so we have to be a little creative. This will produce a while loop where the `-InitialCondition` should always be true, and the `-Condition` will be checked at the end of each iteration. If the `Condition` is true, then the loop will break. .EXAMPLE Template.UntilLoop.py -Condition "True" -Body "print('This happens once')" #> param( # The Loop's Condition. # This determines if the loop should continue running. # This defaults to 0 > 1, so that the loop only occurs once [Parameter(ValueFromPipelineByPropertyName)] [string] $Condition = "False", # The Loop's Initial Condition. # Since Python does not have a `do` loop, this needs to be any truthy condition for the loop to run. [Parameter(ValueFromPipelineByPropertyName)] [string] $InitialCondition = 'True', # The body of the loop [Parameter(ValueFromPipelineByPropertyName)] [string] $Body, # The number of spaces to indent the body. # By default, two. [Parameter(ValueFromPipelineByPropertyName)] [int] $BodyIndent = 2, # The number of spaces to indent all code. # By default, zero [Parameter(ValueFromPipelineByPropertyName)] [int] $Indent = 0 ) process { if ($body -match '^\{') { $body = $body -replace '^\s{0,}\{' -replace '\}\s{0,}$' } if ($Condition -match '^\$') { $Condition = $Condition -replace '^\$' } '' + $(if ($Indent) {(' ' * $Indent)}) + (@" while ${InitialCondition}: $(' ' * $BodyIndent)$( $Body -split "(?>\r\n|\n)" -join ([Environment]::NewLine + $(' ' * $BodyIndent)) ) $(' ' * $BodyIndent)$( "if ${Condition}:$( [Environment]::NewLine + (' ' * $BodyIndent * 2) )break" ) "@ -split '(?>\r\n|\n)' -join ([Environment]::NewLine + $(' ' * $Indent))) } } |