gitweb: Separate generating 'sort by' table header

Extract generating table header cell, for tables which can be sorted
by its columns, into print_sort_th_str() and print_sort_th_num()
subroutines, and print_sort_th() driver subroutine.

This avoids repetition, and should make further improvements (like
JavaScript sorting) easier.  The subroutine uses now "replay" link,
so it is generic enough to be able to use it for other tables which
can be sorted by column, like for example 'heads' and 'tags' view
(sort by name, or sort by age).

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index d7a980902701e654d0a46e648838e8cfe1c3c7cb..c7882f24f746c63b40e64152657ebcb14567a06f 100755 (executable)
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -3598,6 +3598,36 @@ sub fill_project_list_info {
        return @projects;
 }
 
+# print 'sort by' <th> element, either sorting by $key if $name eq $order
+# (changing $list), or generating 'sort by $name' replay link otherwise
+sub print_sort_th {
+       my ($str_sort, $name, $order, $key, $header, $list) = @_;
+       $key    ||= $name;
+       $header ||= ucfirst($name);
+
+       if ($order eq $name) {
+               if ($str_sort) {
+                       @$list = sort {$a->{$key} cmp $b->{$key}} @$list;
+               } else {
+                       @$list = sort {$a->{$key} <=> $b->{$key}} @$list;
+               }
+               print "<th>$header</th>\n";
+       } else {
+               print "<th>" .
+                     $cgi->a({-href => href(-replay=>1, order=>$name),
+                              -class => "header"}, $header) .
+                     "</th>\n";
+       }
+}
+
+sub print_sort_th_str {
+       print_sort_th(1, @_);
+}
+
+sub print_sort_th_num {
+       print_sort_th(0, @_);
+}
+
 sub git_project_list_body {
        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
 
@@ -3614,43 +3644,15 @@ sub git_project_list_body {
                if ($check_forks) {
                        print "<th></th>\n";
                }
-               if ($order eq "project") {
-                       @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
-                       print "<th>Project</th>\n";
-               } else {
-                       print "<th>" .
-                             $cgi->a({-href => href(project=>undef, order=>'project'),
-                                      -class => "header"}, "Project") .
-                             "</th>\n";
-               }
-               if ($order eq "descr") {
-                       @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
-                       print "<th>Description</th>\n";
-               } else {
-                       print "<th>" .
-                             $cgi->a({-href => href(project=>undef, order=>'descr'),
-                                      -class => "header"}, "Description") .
-                             "</th>\n";
-               }
-               if ($order eq "owner") {
-                       @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
-                       print "<th>Owner</th>\n";
-               } else {
-                       print "<th>" .
-                             $cgi->a({-href => href(project=>undef, order=>'owner'),
-                                      -class => "header"}, "Owner") .
-                             "</th>\n";
-               }
-               if ($order eq "age") {
-                       @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
-                       print "<th>Last Change</th>\n";
-               } else {
-                       print "<th>" .
-                             $cgi->a({-href => href(project=>undef, order=>'age'),
-                                      -class => "header"}, "Last Change") .
-                             "</th>\n";
-               }
-               print "<th></th>\n" .
+               print_sort_th_str('project', $order, 'path',
+                                 'Project', \@projects);
+               print_sort_th_str('descr', $order, 'descr_long',
+                                 'Description', \@projects);
+               print_sort_th_str('owner', $order, 'owner',
+                                 'Owner', \@projects);
+               print_sort_th_num('age', $order, 'age',
+                                 'Last Change', \@projects);
+               print "<th></th>\n" . # for links
                      "</tr>\n";
        }
        my $alternate = 1;