#!/usr/bin/perl -w
use Data::Dumper;
{my $i=1;
sub makevalue {
return $i++;
}
}
my $hash={};my $h0;
my $l;my @c;
while ($l=<DATA>) {
$h0=$hash;
@c=split '/',$l;
for my $c (@c[0..$#c-1]) {
next unless $c;
$h0=($h0->{$c}||={});
}
$h0->{$c[-1]}=makevalue($l);
}
print Dumper($hash);
__DATA__
/root/dir1/file1
/root/dir1/file2
/root/dir1/file3
/root/dir2/file1
Outputs:
$VAR1 = {
'root' => {
'dir2' => {
'file1' => 4
},
'dir1' => {
'file2' => 2,
'file3' => 3,
'file1' => 1
}
}
};
What does it do: it splits each row, and walks down the HoH (creating empty hashes as needed), putting the computed values (in this example just a counter) on the leaf.
I think this is more or less what you were describing, but I can't come up with a better solution.
--
dakkar - Mobilis in mobile
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