PipeScript

0.2.8

Languages/RSS/RSS-Language.ps1

                                
function Language.RSS {

<#

.SYNOPSIS

    RSS PipeScript Language Definition.

.DESCRIPTION

    Allows PipeScript to generate RSS.

    Multiline comments blocks like this ```<!--{}-->``` will be treated as blocks of PipeScript.

#>

[ValidatePattern('\.rss$')]

param()

$this = $myInvocation.MyCommand

if (-not $this.Self) {

$languageDefinition = New-Module {

    param()

    $FilePattern = '\.rss'

    # RSS is a really simple data language (it's just XML, really)

    $DataLanguage = $true

    # RSS is case-sensitive

    $CaseSensitive = $true

    # We start off by declaring a number of regular expressions:

    $startComment = '<\!--' # * Start Comments ```<!--```

    $endComment   = '-->'   # * End Comments   ```-->```

    $Whitespace   = '[\s\n\r]{0,}'

    # * StartPattern     ```$StartComment + '{' + $Whitespace```

    $startPattern = "(?<PSStart>${startComment}\{$Whitespace)"

    # * EndPattern       ```$whitespace + '}' + $EndComment```

    $endPattern   = "(?<PSEnd>$Whitespace\}${endComment}\s{0,})"

    # The "interpreter" for RSS simply reads each of the files.

    $Interpreter = {        

        $xmlFiles = @(foreach ($arg in $args) {

            if (Test-path $arg) {                

                [IO.File]::ReadAllText($arg) -as [xml]

            }

            else {

                $otherArgs += $arg

            }

        })

        $xmlFiles

    }

    $LanguageName = 'RSS'

    Export-ModuleMember -Variable * -Function * -Alias *

} -AsCustomObject

$languageDefinition.pstypenames.clear()

$languageDefinition.pstypenames.add("Language")

$languageDefinition.pstypenames.add("Language.RSS")

$this.psobject.properties.add([PSNoteProperty]::new('Self',$languageDefinition))

}

$this.Self

}