public/Get-PSScriptInfo.ps1
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<#PSScriptInfo
.VERSION 1.0.0.0 .GUID dd14abf0-8b1b-425f-9498-8dfaf657ae9f .FILENAME Get-PSScriptInfo.ps1 .AUTHOR Hannes Palmquist .AUTHOREMAIL hannes.palmquist@outlook.com .CREATEDDATE 2019-09-23 .COMPANYNAME N/A .COPYRIGHT (c) 2019, Hannes Palmquist, All Rights Reserved #> function Get-PSScriptInfo { <# .DESCRIPTION Collect and parse psscriptinfo from file .PARAMETER FilePath Defines the path to the file from which to get psscriptinfo from. .EXAMPLE Get-PSScriptInfo -FilePath C:\temp\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 $PSScriptInfoText = $astTokens.where{ $_.kind -eq 'comment' -and $_.text.Replace("`r", '').Split("`n")[0] -like '<#PSScriptInfo*' } | Select-Object -expand text -ErrorAction stop Write-Verbose -Message 'Parsed powershell script file and extracted raw PSScriptInfoText' if (-not $PSScriptInfoText) { throw 'No PSScriptInfo found in file' } # Extract PSScriptInfo from JSON try { $PSScriptInfoRaw = $PSScriptInfoText.Split("`n") | Select-Object -Skip 1 -ErrorAction Stop | Select-Object -SkipLast 1 -ErrorAction Stop $PSScriptInfo = $PSScriptInfoRaw | ConvertFrom-Json -ErrorAction Stop Write-Verbose -Message 'Parsed PSScriptInfo to JSON' } catch { if (($PSScriptInfoRaw[0].Trim() -like '.*') -and $_.exception.message -like '*Invalid JSON primitive*') { # Legacy PSScriptInfo Write-Verbose -Message 'Standard JSON parsing failed, trying legacy...' $PSScriptInfo = Get-PSScriptInfoLegacy -FilePath $FilePath } else { throw "Failed to parse PSScriptInfo to JSON with error: $PSItem" } } return $PSScriptInfo } } #endregion |