Public/Node.ps1
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function Node { <# .Description Used to specify a nodes attributes or placement within the flow. .Example graph g { node one,two,three } .Example graph g { node top @{shape='house'} node middle node bottom @{shape='invhouse'} edge top,middle,bottom } .Example graph g { node (1..10) } .Notes I had conflits trying to alias Get-Node to node, so I droped the verb from the name. If you have subgraphs, it works best to define the node inside the subgraph before giving it an edge #> [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSAvoidDefaultValueForMandatoryParameter","")] [cmdletbinding()] param( # The name of the node [Parameter( Mandatory = $true, ValueFromPipeline = $true, Position = 0 )] [object[]] $Name = 'node', # Script to run on each node [Parameter()] [alias('Script')] [scriptblock] $NodeScript = {$_}, # Node attributes to apply to this node [Parameter(Position = 1)] [hashtable] $Attributes, # not used anymore but offers backward compatibility or verbosity [switch] $Default ) process { if($Name.count -eq 1 -and $Name[0] -is [hashtable] -and !$PSBoundParameters.ContainsKey('NodeScript')) { # detected attept to set default values in this form 'node @{key=value}', the hashtable ends up in $name[0] Node node -Attributes $Name[0] } else { foreach($node in $Name) { if($NodeScript) { $nodeName = [string](@($node).ForEach($NodeScript)) } else { $nodeName = $node } $GraphVizAttribute = ConvertTo-GraphVizAttribute -Attributes $Attributes -InputObject $node Write-Output ('{0}{1} {2}' -f (Get-Indent), (Format-Value $nodeName -Node), $GraphVizAttribute) } } } } |