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#!/usr/bin/perl

my $argCount = $#ARGV;

if (0 != $argCount) {
  die "usage: dia2svgmult file.dia" ;
}

my ($diaFileName) = @ARGV;


my @layerLines = `gunzip -d -c  $diaFileName |grep '<dia:layer'`;

my %layerblock2id = ();
my @blockIdList;

foreach my $layerLine (@layerLines) {
  chop($layerLine);

  $layerLine =~ /^[ \t]*<dia:layer name="([^"]+)"/;
  my $layerId = $1;
  $layerId =~ /([^0-9]+)([0-9]+)/;
  my $nonNumeric = $1, $numeric = $2;

  if ($layerblock2id {$nonNumeric}) {
      push($layerblock2id {$nonNumeric}, $numeric);
  } else {
      $layerblock2id {$nonNumeric} = [$numeric];
      push(@blockIdList, $nonNumeric);
  }
}


foreach my $layerBlockId (@blockIdList) {
    my $sublayerIds = $layerblock2id {$layerBlockId};
    foreach my $subLayerId (@$sublayerIds) {
	print $layerBlockId, ":", $subLayerId ,"\n";
    }
}



#end