source: nawszelkiwypadek/tools/fsm2aut @ 20b4e44

#!/usr/bin/perl

my $currstate=-1;
my @states;
my @final;
my $tn=0;

while(<>)
{
  if(/^\s*([0-9]+)\s+([0-9]+)\s+(.)(\s*)?$/)
  {
    push @{$states[$1]}, ($3, $2);
    $#states=$2 if $#states<$2;
    $tn++;
  }
  elsif(/^\s*([0-9]+)\s*$/)
  {
    $final[$1]=1;
    $#states=$1 if $#states<$1;
  }
  else
  {
    die("Input error.");
  }
}

print scalar(@states)," ",$tn," char void\n";

my $i=0;
my $width=int(log(@states+1)/log(10));
foreach $stateref (@states)
{
  $f = ($final[$i]?"+":"-");
  printf "%${width}d %s",$i++,$f;
  while(@$stateref)
  {
    $c=shift @$stateref;
    $s=shift @$stateref;
    print " $c $s";
  }
  print "\n";
}