A solution using 2 modules, Set::IntSpan and Set::CrossProduct.
#!/usr/bin/perl
use strict;
use warnings;
use Set::IntSpan;
use Set::CrossProduct;
while (<DATA>) {
my @set;
if (/^\d+$/) {
print;
}
else {
chomp;
s/\./[0-9]/g;
for my $part (split /(\[.+?])/) {
if (-1 == index $part, '[') {
push @set, [$part];
}
else {
my $set = Set::IntSpan->new( substr $part, 1,-1 );
push @set, [ $set->elements() ];
}
}
my $xp = Set::CrossProduct->new( \@set );
while( my @tuple = $xp->get ) {
print @tuple, "\n";
}
}
}
__DATA__
1115551234
111555124.
111555125[0,3-7]
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