[PATCH] gitweb: Use File::Find::find in git_get_projects_list

[Jakub Narebski <jnareb@gmail.com>]

Earlier code to get list of projects when $projects_list is a
directory (e.g. when it is equal to $projectroot) had a hardcoded flat
(one level) list of directories.  Allow for projects to be in
subdirectories also for $projects_list being a directory by using
File::Find.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
This doesn't add much overhead to "project_list" view,
compared to previous version; times are the same within margin
of error.

 gitweb/gitweb.perl |   29 +++++++++++++++++++++--------
 1 files changed, 21 insertions(+), 8 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index c3544dd..470bff2 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -715,16 +715,29 @@ sub git_get_projects_list {
 	if (-d $projects_list) {
 		# search in directory
 		my $dir = $projects_list;
-		opendir my ($dh), $dir or return undef;
-		while (my $dir = readdir($dh)) {
-			if (-e "$projectroot/$dir/HEAD") {
-				my $pr = {
-					path => $dir,
-				};
-				push @list, $pr
+		my $pfxlen = length("$dir");
+
+		sub wanted {
+			# skip dot files (hidden files), check only directories
+			#return if (/^\./);
+			return unless (-d $_);
+
+			my $subdir = substr($File::Find::name, $pfxlen + 1);
+			# we check related file in $projectroot
+			if (-e "$projectroot/$subdir/HEAD") {
+				push @list, { path => $subdir };
+				$File::Find::prune = 1;
 			}
 		}
-		closedir($dh);
+
+		File::Find::find({
+			no_chdir => 1, # do not change directory
+			follow_fast => 1, # follow symbolic links
+			#follow_skip => 2, # ignore duplicated files and directories
+			dangling_symlinks => 0, # ignore dangling symlinks, silently
+			wanted => \&wanted,
+		}, "$dir");
+
 	} elsif (-f $projects_list) {
 		# read from file(url-encoded):
 		# 'git%2Fgit.git Linus+Torvalds'
-- 
1.4.2