Public/Graph.ps1
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function Graph { <# .Description Defines a graph. The base collection that holds all other graph elements .Example graph g { node top,left,right @{shape='rectangle'} rank left,right edge top left,right } .Example $dot = graph { edge hello world } .Notes The output is a string so it can be saved to a variable or piped to other commands #> [cmdletbinding(DefaultParameterSetName='Default')] param( # Name or ID of the graph [Parameter( Mandatory = $true, Position = 0 )] [string] $Name, # The commands to execute inside the graph [Parameter( Mandatory = $true, Position = 1, ParameterSetName='Default' )] [Parameter( Mandatory = $true, Position = 2, ParameterSetName='Attributes' )] [scriptblock] $ScriptBlock, # Hashtable that gets translated to graph attributes [Parameter( ParameterSetName='Default' )] [Parameter( Mandatory = $true, Position = 1, ParameterSetName='Attributes' )] [hashtable] $Attributes = @{}, # Keyword that initiates the graph [string] $Type = 'digraph' ) begin { Write-Verbose "Begin Graph $type $Name" if($Type -eq 'digraph') { $script:indent = 0 } "" # Blank line "{0}{1} {2} {{" -f (Get-Indent), $Type, $name $script:indent++ if($Attributes -ne $null) { ConvertTo-GraphVizAttribute -Attributes $Attributes -UseGraphStyle } "" # Blank line } process { Write-Verbose "Process Graph $type $name" & $ScriptBlock } end { $script:indent-- "$(Get-Indent)}" # Close braces "" #Blank line Write-Verbose "End Graph $type $name" } } |