Yes, it's generally best to avoid unnecessary
eval STRING, so a simple iteration over the result of
spliting the string should do it e.g
my $h = {
'misc' => {},
'docs' => {
'howtos' => {
'email' => {
'index.html' => {
'date' => '21-1-2004',
'size' => '691'
}
},
'ftp' => {},
'ssh' => {}
}
}
};
use Data::Dumper;
print Dumper( find_hash($h,"/docs/howtos/email/") );
sub find_hash {
my($tree, $path) = @_;
my $n = $tree;
for(grep length, split '/', $path) {
return unless exists $n->{$_} and defined $n->{$_};
$n = $n->{$_};
}
return $n;
}
__output__
$VAR1 = {
'index.html' => {
'date' => '21-1-2004',
'size' => '691'
}
};
That could probably do with a bit more data validation but it should illustrate, roughly, a saner approach to iterating through your nested hash.