pstools.psscriptinfo

1.1

public/Remove-PSScriptInfo.ps1

                                <#PSScriptInfo

    .VERSION                       1.0.0.0

    .GUID                          1d1a8e42-48bf-4c9f-9d62-e01484b5eb1a

    .FILENAME                      Remove-PSScriptInfo.ps1

    .AUTHOR                        Hannes Palmquist

    .AUTHOREMAIL                   hannes.palmquist@outlook.com

    .CREATEDDATE                   2021-03-28

    .COMPANYNAME                   N/A

    .COPYRIGHT                     © 2021, Hannes Palmquist, All Rights Reserved

#>

function Remove-PSScriptInfo

{

    <#

    .DESCRIPTION

        Removes a PSScriptInfo block from a script file

    .PARAMETER FilePath

        Path to file where PSScriptInfo block should be removed

    .EXAMPLE

        Remove-PSScriptInfo -FilePath C:\Script\file.ps1

    #>

    [CmdletBinding()] # Enabled advanced function support

    param(

        [ValidateScript( { Test-Path -Path $_.FullName -PathType Leaf })]

        [Parameter(Mandatory)]

        [system.io.fileinfo]

        $FilePath

    )

    PROCESS

    {

        # Read ast tokens from file

        try

        {

            New-Variable astTokens -Force -ErrorAction Stop

            New-Variable astErr -Force -ErrorAction Stop

            $null = [System.Management.Automation.Language.Parser]::ParseFile($FilePath, [ref]$astTokens, [ref]$astErr)

            Write-Verbose -Message 'Read file content'

        }

        catch

        {

            throw "Failed to read file content with error: $PSItem"

        }

        # Find PSScriptInfo comment token

        $PSScriptInfo = $astTokens.where{ $_.kind -eq 'comment' -and $_.text.Replace("`r", '').Split("`n")[0] -like '<#PSScriptInfo*' }

        Write-Verbose -Message 'Parsed powershell script file and extracted raw PSScriptInfoText'

        if (-not $PSScriptInfo)

        {

            throw 'No PSScriptInfo found in file'

        }

        $StartLine = $PSScriptInfo.extent.StartLineNumber

        $EndLine = $PSScriptInfo.extent.EndLineNumber

        # Read file

        try

        {

            $FileContent = Get-Content -Path $FilePath -ErrorAction Stop

            Write-Verbose -Message 'Collected file content'

        }

        catch

        {

            throw "Failed to read file content with error: $PSItem"

        }

        # Exclude PSScriptInfo

        $NewContent = ($FileContent | Select-Object -First ($StartLine - 1) -ErrorAction stop) + ($FileContent | Select-Object -Skip ($EndLine) -ErrorAction Stop)

        Write-Verbose -Message 'Concatinated content around removed PSScriptInfo'

        # Write content back to file

        try

        {

            $NewContent | Set-Content -Path $FilePath -ErrorAction Stop

            Write-Verbose -Message 'Wrote content to back to file'

        }

        catch

        {

            throw "Failed to write content back to file with error: $PSItem"

        }

    }

}

#endregion

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# SIG # End signature block