Transpilers/Templates/Json.Template.psx.ps1
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<# .SYNOPSIS JSON PipeScript Transpiler. .DESCRIPTION Allows PipeScript to generate JSON. Multiline comments blocks like ```/*{}*/``` will be treated as blocks of PipeScript. Multiline comments can be preceeded or followed by 'empty' syntax, which will be ignored. * ```null``` * ```""``` * ```{}``` * ```[]``` #> [ValidatePattern('\.json$')] param( # The command information. This will include the path to the file. [Parameter(Mandatory,ValueFromPipeline,ParameterSetName='TemplateFile')] [Management.Automation.CommandInfo] $CommandInfo, # If set, will return the information required to dynamically apply this template to any text. [Parameter(Mandatory,ParameterSetName='TemplateObject')] [switch] $AsTemplateObject, # A dictionary of parameters. [Collections.IDictionary] $Parameter, # A list of arguments. [PSObject[]] $ArgumentList ) begin { # We start off by declaring a number of regular expressions: $startComment = '/\*' # * Start Comments ```\*``` $endComment = '\*/' # * End Comments ```/*``` $Whitespace = '[\s\n\r]{0,}' # * IgnoredContext ```String.empty```, ```null```, blank strings and characters $IgnoredContext = "(?<ignore>(?>$("null", '""', "\{\}", "\[\]" -join '|'))\s{0,}){0,1}" # * StartRegex ```$IgnoredContext + $StartComment + '{' + $Whitespace``` $startRegex = "(?<PSStart>${IgnoredContext}${startComment}\{$Whitespace)" # * EndRegex ```$whitespace + '}' + $EndComment + $ignoredContext``` $endRegex = "(?<PSEnd>$Whitespace\}${endComment}\s{0,}${IgnoredContext})" # Create a splat containing arguments to the core inline transpiler $Splat = [Ordered]@{ StartPattern = $startRegex EndPattern = $endRegex } } process { # Add parameters related to the file $Splat.SourceFile = $commandInfo.Source -as [IO.FileInfo] $Splat.SourceText = [IO.File]::ReadAllText($commandInfo.Source) if ($Parameter) { $splat.Parameter = $Parameter } if ($ArgumentList) { $splat.ArgumentList = $ArgumentList } # If we are being used within a keyword, if ($AsTemplateObject) { $splat # output the parameters we would use to evaluate this file. } else { # Otherwise, call the core template transpiler .>PipeScript.Template @Splat # and output the changed file. } } |