Tasks/SetVariableFromXml.ps1
|
function Set-WhiskeyVariableFromXml { [Whiskey.Task("SetVariableFromXml")] [CmdletBinding()] param( [Parameter(Mandatory)] [Whiskey.Context] $TaskContext, [Parameter(Mandatory)] [hashtable] $TaskParameter, [Whiskey.Tasks.ValidatePath(Mandatory,PathType='File')] [string] $Path ) Set-StrictMode -Version 'Latest' Use-CallerPreference -Cmdlet $PSCmdlet -SessionState $ExecutionContext.SessionState Write-WhiskeyVerbose -Context $TaskContext -Message ($Path) [xml]$xml = $null try { $xml = Get-Content -Path $Path -Raw } catch { $Global:Error.RemoveAt(0) Stop-WhiskeyTask -TaskContext $TaskContext -Message ('Exception reading XML from file "{0}": {1}"' -f $Path,$_) return } $nsManager = New-Object -TypeName 'Xml.XmlNamespaceManager' -ArgumentList $xml.NameTable $prefixes = $TaskParameter['NamespacePrefixes'] if( $prefixes -and ($prefixes | Get-Member 'Keys') ) { foreach( $prefix in $prefixes.Keys ) { $nsManager.AddNamespace($prefix, $prefixes[$prefix]) } } $allowMissingNodes = $TaskParameter['AllowMissingNodes'] | ConvertFrom-WhiskeyYamlScalar $variables = $TaskParameter['Variables'] if( $variables -and ($variables | Get-Member 'Keys') ) { foreach( $variableName in $variables.Keys ) { $xpath = $variables[$variableName] $value = $xml.SelectNodes($xpath, $nsManager) | ForEach-Object { if( $_ | Get-Member 'InnerText' ) { $_.InnerText } elseif( $_ | Get-Member '#text' ) { $_.'#text' } } $exists = ' ' if( $value -eq $null ) { if( -not $allowMissingNodes ) { Stop-WhiskeyTask -TaskContext $TaskContext -Message ('Variable {0}: XPath expression "{1}" matched no elements/attributes in XML file "{2}".' -f $variableName,$xpath,$Path) return } $value = '' $exists = '!' } Write-WhiskeyVerbose -Context $TaskContext -Message (' {0} {1}' -f $exists,$xpath) Write-WhiskeyVerbose -Context $TaskContext -Message (' {0} = {1}' -f $variableName,($value | Select-Object -First 1)) $value | Select-Object -Skip 1 | ForEach-Object { Write-WhiskeyVerbose -Context $TaskContext -Message (' {0} {1}' -f (' ' * $variableName.Length),$_) } Add-WhiskeyVariable -Context $TaskContext -Name $variableName -Value $value } } } |