Merge branch 'jn/gitweb-search-optim'

* jn/gitweb-search-optim:
  gitweb: Faster project search
  gitweb: Option for filling only specified info in fill_project_list_info
  gitweb: Refactor checking if part of project info need filling

diff --combined gitweb/gitweb.perl
index b63a5c67aff0fd587da31b307c1154ec033950f1,568b0775f2de72d7f4fe9b3d7f5f72cbc2108085..eaf5f942502dd6593fa44724ea18d0153e725aea
--- 1/gitweb/gitweb.perl
--- 2/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@@ -2987,6 -2987,10 +2987,10 @@@ sub search_projects_list 
        return @$projlist
                unless ($tagfilter || $searchtext);
  
+       # searching projects require filling to be run before it;
+       fill_project_list_info($projlist,
+                              $tagfilter  ? 'ctags' : (),
+                              $searchtext ? ('path', 'descr') : ());
        my @projects;
   PROJECT:
        foreach my $pr (@$projlist) {
@@@ -5188,35 -5192,70 +5192,70 @@@ sub git_project_search_form 
        print "</div>\n";
  }
  
- # fills project list info (age, description, owner, category, forks)
+ # entry for given @keys needs filling if at least one of keys in list
+ # is not present in %$project_info
+ sub project_info_needs_filling {
+       my ($project_info, @keys) = @_;
+ 
+       # return List::MoreUtils::any { !exists $project_info->{$_} } @keys;
+       foreach my $key (@keys) {
+               if (!exists $project_info->{$key}) {
+                       return 1;
+               }
+       }
+       return;
+ }
+ 
+ # fills project list info (age, description, owner, category, forks, etc.)
  # for each project in the list, removing invalid projects from
- # returned list
+ # returned list, or fill only specified info.
+ #
+ # Invalid projects are removed from the returned list if and only if you
+ # ask 'age' or 'age_string' to be filled, because they are the only fields
+ # that run unconditionally git command that requires repository, and
+ # therefore do always check if project repository is invalid.
+ #
+ # USAGE:
+ # * fill_project_list_info(\@project_list, 'descr_long', 'ctags')
+ #   ensures that 'descr_long' and 'ctags' fields are filled
+ # * @project_list = fill_project_list_info(\@project_list)
+ #   ensures that all fields are filled (and invalid projects removed)
+ #
  # NOTE: modifies $projlist, but does not remove entries from it
  sub fill_project_list_info {
-       my $projlist = shift;
+       my ($projlist, @wanted_keys) = @_;
        my @projects;
+       my $filter_set = sub { return @_; };
+       if (@wanted_keys) {
+               my %wanted_keys = map { $_ => 1 } @wanted_keys;
+               $filter_set = sub { return grep { $wanted_keys{$_} } @_; };
+       }
  
        my $show_ctags = gitweb_check_feature('ctags');
   PROJECT:
        foreach my $pr (@$projlist) {
-               my (@activity) = git_get_last_activity($pr->{'path'});
-               unless (@activity) {
-                       next PROJECT;
+               if (project_info_needs_filling($pr, $filter_set->('age', 'age_string'))) {
+                       my (@activity) = git_get_last_activity($pr->{'path'});
+                       unless (@activity) {
+                               next PROJECT;
+                       }
+                       ($pr->{'age'}, $pr->{'age_string'}) = @activity;
                }
-               ($pr->{'age'}, $pr->{'age_string'}) = @activity;
-               if (!defined $pr->{'descr'}) {
+               if (project_info_needs_filling($pr, $filter_set->('descr', 'descr_long'))) {
                        my $descr = git_get_project_description($pr->{'path'}) || "";
                        $descr = to_utf8($descr);
                        $pr->{'descr_long'} = $descr;
                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
                }
-               if (!defined $pr->{'owner'}) {
+               if (project_info_needs_filling($pr, $filter_set->('owner'))) {
                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
                }
-               if ($show_ctags) {
+               if ($show_ctags &&
+                   project_info_needs_filling($pr, $filter_set->('ctags'))) {
                        $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
                }
-               if ($projects_list_group_categories && !defined $pr->{'category'}) {
+               if ($projects_list_group_categories &&
+                   project_info_needs_filling($pr, $filter_set->('category'))) {
                        my $cat = git_get_project_category($pr->{'path'}) ||
                                                           $project_list_default_category;
                        $pr->{'category'} = to_utf8($cat);
@@@ -5352,12 -5391,13 +5391,13 @@@ sub git_project_list_body 
        # filtering out forks before filling info allows to do less work
        @projects = filter_forks_from_projects_list(\@projects)
                if ($check_forks);
-       @projects = fill_project_list_info(\@projects);
-       # searching projects require filling to be run before it
+       # search_projects_list pre-fills required info
        @projects = search_projects_list(\@projects,
                                         'searchtext' => $searchtext,
                                         'tagfilter'  => $tagfilter)
                if ($tagfilter || $searchtext);
+       # fill the rest
+       @projects = fill_project_list_info(\@projects);
  
        $order ||= $default_projects_order;
        $from = 0 unless defined $from;
@@@ -5633,7 -5673,7 +5673,7 @@@ sub git_tags_body 
  
  sub git_heads_body {
        # uses global variable $project
 -      my ($headlist, $head, $from, $to, $extra) = @_;
 +      my ($headlist, $head_at, $from, $to, $extra) = @_;
        $from = 0 unless defined $from;
        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
  
@@@ -5642,7 -5682,7 +5682,7 @@@
        for (my $i = $from; $i <= $to; $i++) {
                my $entry = $headlist->[$i];
                my %ref = %$entry;
 -              my $curr = $ref{'id'} eq $head;
 +              my $curr = defined $head_at && $ref{'id'} eq $head_at;
                if ($alternate) {
                        print "<tr class=\"dark\">\n";
                } else {
@@@ -5915,10 -5955,9 +5955,10 @@@ sub git_search_files 
        my $alternate = 1;
        my $matches = 0;
        my $lastfile = '';
 +      my $file_href;
        while (my $line = <$fd>) {
                chomp $line;
 -              my ($file, $file_href, $lno, $ltext, $binary);
 +              my ($file, $lno, $ltext, $binary);
                last if ($matches++ > 1000);
                if ($line =~ /^Binary file (.+) matches$/) {
                        $file = $1;