gitweb: Option to omit column with time of the last change

Generating information about last change for a large number of git
repositories can be very time consuming. This commit add an option to
omit 'Last Change' column when presenting the list of repositories.

Signed-off-by: Kacper Kornet <draenog@pld-linux.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/gitweb.conf.txt

@@ -499,6 +499,10 @@ $maxload::
 Set `$maxload` to undefined value (`undef`) to turn this feature off.
 The default value is 300.
 
+$omit_age_column::
+	If true, omit the column with date of the most current commit on the
+	projects list page. It can save a bit of I/O and a fork per repository.
+
 $per_request_config::
 	If this is set to code reference, it will be run once for each request.
 	You can	set parts of configuration that change per session this way.

gitweb/gitweb.perl

@@ -133,6 +133,9 @@ sub evaluate_uri {
 # (only effective if this variable evaluates to true)
 our $export_ok = "++GITWEB_EXPORT_OK++";
 
+# don't generate age column on the projects list page
+our $omit_age_column = 0;
+
 # show repository only if this subroutine returns true
 # when given the path to the project, for example:
 #    sub { return -e "$_[0]/git-daemon-export-ok"; }
@@ -5464,9 +5467,11 @@ sub git_project_list_rows {
 		                        : esc_html($pr->{'descr'})) .
 		      "</td>\n" .
 		      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
-		print "<td class=\"". age_class($pr->{'age'}) . "\">" .
-		      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
-		      "<td class=\"link\">" .
+		unless ($omit_age_column) {
+		        print "<td class=\"". age_class($pr->{'age'}) . "\">" .
+		            (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n";
+		}
+		print"<td class=\"link\">" .
 		      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
 		      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
 		      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
@@ -5497,7 +5502,8 @@ sub git_project_list_body {
 	                                 'tagfilter'  => $tagfilter)
 		if ($tagfilter || $search_regexp);
 	# fill the rest
-	@projects = fill_project_list_info(\@projects);
+	my @all_fields = $omit_age_column ? ('descr', 'descr_long', 'owner', 'ctags', 'category') : ();
+	@projects = fill_project_list_info(\@projects, @all_fields);
 
 	$order ||= $default_projects_order;
 	$from = 0 unless defined $from;
@@ -5529,7 +5535,7 @@ sub git_project_list_body {
 		print_sort_th('project', $order, 'Project');
 		print_sort_th('descr', $order, 'Description');
 		print_sort_th('owner', $order, 'Owner');
-		print_sort_th('age', $order, 'Last Change');
+		print_sort_th('age', $order, 'Last Change') unless $omit_age_column;
 		print "<th></th>\n" . # for links
 		      "</tr>\n";
 	}