gitweb: There can be more than two levels of subdirectories

Earlier code to read .git/refs/{tags,heads} hierarchy had a
hardcoded up-to-two-level assumption.  Lift it by using
File::Find.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/gitweb/gitweb.cgi b/gitweb/gitweb.cgi
index 4e79390..9569af0 100755 (executable)
--- a/gitweb/gitweb.cgi
+++ b/gitweb/gitweb.cgi
@@ -14,6 +14,7 @@ use CGI::Util qw(unescape);
 use CGI::Carp qw(fatalsToBrowser);
 use Encode;
 use Fcntl ':mode';
+use File::Find qw();
 binmode STDOUT, ':utf8';
 
 our $cgi = new CGI;
@@ -697,23 +698,14 @@ sub git_read_refs {
        my @reflist;
 
        my @refs;
-       opendir my $dh, "$projectroot/$project/$ref_dir";
-       while (my $dir = readdir($dh)) {
-               if ($dir =~ m/^\./) {
-                       next;
-               }
-               if (-d "$projectroot/$project/$ref_dir/$dir") {
-                       opendir my $dh2, "$projectroot/$project/$ref_dir/$dir";
-                       my @subdirs = grep !m/^\./, readdir $dh2;
-                       closedir($dh2);
-                       foreach my $subdir (@subdirs) {
-                               push @refs, "$dir/$subdir"
-                       }
-                       next;
+       my $pfxlen = length("$projectroot/$project/$ref_dir");
+       File::Find::find(sub {
+               return if (/^\./);
+               if (-f $_) {
+                       push @refs, substr($File::Find::name, $pfxlen + 1);
                }
-               push @refs, $dir;
-       }
-       closedir($dh);
+       }, "$projectroot/$project/$ref_dir");
+
        foreach my $ref_file (@refs) {
                my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
                my $type = git_get_type($ref_id) || next;