I have an array full of hashes with paths to files or folders. I want to sort it naturally/alphabetically but to have folder on top, subfolder on top of the folder etc. same view like in windows explorer or some other file manager with all subfolders open. 
my @arr = (
  { 'path' => '/c/', dir => '/' },
  { 'path' => '/c/a1.mp3', 'file' => 1, 'dir' => '/c' },
  { 'path' => '/c/a2.mp3', 'file' => 1, 'dir' => '/c' },
  { 'path' => '/c/bb/aa1.mp3', 'file' => 1, 'dir' => '/c/bb' },
  { 'path' => '/c/bb/aa2.mp3', 'file' => 1, 'dir' => '/c/bb' },
  { 'path' => '/c/bb/', 'dir' => '/c' },
  { 'path' => '/c/cc/', 'dir' => '/c' },
  { 'path' => '/c/aa/', 'dir' => '/c' }
);

@arr = sort sort_files @arr;
foreach (@arr) {
        my %h = %{$_};
        print $h{'path'}."\n";
}

# putting the folders on the top works, but... see output
sub sort_files {
        # if both in the same folder and one is folder, put it top
        if ($$a{'dir'} eq $$b{'dir'}) {
                if ($$a{'file'} && !$$b{'file'}) {
                        return 1;
                } elsif (!$$a{'file'} && $$b{'file'}) {
                        return -1;
                }
        }
        # compare
        lc $$a{'path'} cmp lc $$b{'path'};
}

[download]
this is the output: 
/c/
/c/aa/
/c/bb/
/c/cc/
/c/a1.mp3      <<<< file! it should at the end of the list
/c/a2.mp3      <<<< file! should at the end of the list
/c/bb/aa1.mp3  <<<< this should be below /c/bb/
/c/bb/aa2.mp3  <<<< this should be below /c/bb/

[download]
if I just sort it lexigraphicaly, it is sorted nicely, but the folders are not on the top of the parent folder. creative ideas?

In reply to sorting tree with folders on top by diweooy

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