#!/usr/bin/tclsh
package require tdom

set xmlFile ./Sim.SimInfo
set txtFile ./graph.txt
set pngFile ./graph.png

set size [file size $xmlFile]
set fd [open $xmlFile]
set xml [read $fd $size]
close $fd
set doc [dom parse -simple $xml]
set root [$doc documentElement]

set fh [open $txtFile "w"]
puts $fh "digraph finite_state_machine {"
puts $fh "size=\"7,7\";"
foreach connection [$root selectNodes Connection] {
    set command ""
    set SourceId [[$connection child 1 Source] getAttribute id]
    set SourceName [[$root find id $SourceId] getAttribute Name]
    set TargetId [[$connection child 1 Target] getAttribute id]
    set TargetName [[$root find id $TargetId] getAttribute Name]
    append command $SourceName " -> " $TargetName
    set InputNr [[$connection child 1 InputNumber] getAttribute value]
    switch $InputNr {
	0 {}
	1 {append command " \[arrowhead = tee\]"}
	2 {}
	3 {append command " \[arrowhead = tee\]"}
    }
    append command " ;"
    puts $fh $command
}
puts $fh "}"
close $fh

exec dot -Tpng $txtFile -o $pngFile

$doc delete