Write-GitHubWarning.ps1
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function Write-GitHubWarning { <# .Synopsis Writes an GitHub Warning .Description Writes an GitHub Workflow Warning .Example Write-GitHubWarning "Stuff hit the fan" .Link Write-GitHubError .Link https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions #> [OutputType([string])] [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSAvoidUsingWriteHost", "", Justification="Directly outputs in certain scenarios")] [Diagnostics.CodeAnalysis.SuppressMessageAttribute("Test-ForUnusableFunction", "", Justification="Directly outputs in certain scenarios")] param( # The Warning message. [Parameter(Mandatory,ValueFromPipelineByPropertyName)] [string] $Message, # An optional source path. [Parameter(ValueFromPipelineByPropertyName)] [Alias('Source','SourcePath','FullName')] [string] $File, # An optional line number. [Parameter(ValueFromPipelineByPropertyName)] [Alias('LineNumber')] [uint32] $Line, # An optional column number. [Parameter(ValueFromPipelineByPropertyName)] [Alias('Column','ColumnNumber')] [uint32] $Col ) begin { $cmdMd = [Management.Automation.CommandMetaData]$MyInvocation.MyCommand } process { #region Collect Additional Properties $properties = # Collect the optional properties @(foreach ($kv in $PSBoundParameters.GetEnumerator()) { if ('Message' -contains $kv.Key) { continue } # (anything but Message). if (-not $cmdMd.Parameters.ContainsKey($kv.Key)) { continue } "$($kv.Key.ToLower())=$($kv.Value)" }) -join ',' #endregion Collect Additional Properties # Then output the Warning with it's message. $out = "::warning$(if ($properties){" $properties"})::$Message" if ($env:GITHUB_WORKFLOW -and $DebugPreference -eq 'SilentlyContinue') { Write-Host $out } else { $out } } } |