gitweb: Simplify 'opt' parameter validation, add "no merges" feeds

Simplify and make more readable validation of 'opt' (extra options)
parameter, using exists($hash{key}) instead of grepping keys of a hash
for value.

Move 'opt' parameter to be the last (for now) in the URL.

Make use of '--no-merges' extra option ('opt') by adding "no merges"
RSS and Atom feeds to the HTML header.  Note that alternate format
links in the RSS and Atom views do not use '--no-merges' option yet!

Adds tests for the 'opt' parameter to t9500-gitweb-standalone-no-errors.sh

Signed-off-by: Jakub Narebski <redacted>
Signed-off-by: Junio C Hamano <redacted>

diff --git a/gitweb.perl b/gitweb.perl
index 2f2e52fe63c5b13f24061496ba881aaabd1576a702b3fbf3499e2800a4ca2be1..4a8d5e66c9da09efc342d18a20b8fdadd907ce61b45fdb243def0ff15ec5f3b5 100755 (executable)
--- a/gitweb.perl
+++ b/gitweb.perl
@@ -437,12 +437,11 @@ my %allowed_options = (
 
 our @extra_options = $cgi->param('opt');
 if (defined @extra_options) {
-       foreach(@extra_options)
-       {
-               if (not grep(/^$_$/, keys %allowed_options)) {
+       foreach my $opt (@extra_options) {
+               if (not exists $allowed_options{$opt}) {
                        die_error(undef, "Invalid option parameter");
                }
-               if (not grep(/^$action$/, @{$allowed_options{$_}})) {
+               if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
                        die_error(undef, "Invalid option parameter for this action");
                }
        }
@@ -599,7 +598,6 @@ sub href(%) {
                action => "a",
                file_name => "f",
                file_parent => "fp",
-               extra_options => "opt",
                hash => "h",
                hash_parent => "hp",
                hash_base => "hb",
@@ -609,6 +607,7 @@ sub href(%) {
                searchtext => "s",
                searchtype => "st",
                snapshot_format => "sf",
+               extra_options => "opt",
        );
        my %mapping = @mapping;
 
@@ -2286,9 +2285,17 @@ EOF
                printf('<link rel="alternate" title="%s log RSS feed" '.
                       'href="%s" type="application/rss+xml" />'."\n",
                       esc_param($project), href(action=>"rss"));
+               printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
+                      'href="%s" type="application/rss+xml" />'."\n",
+                      esc_param($project), href(action=>"rss",
+                                                extra_options=>"--no-merges"));
                printf('<link rel="alternate" title="%s log Atom feed" '.
                       'href="%s" type="application/atom+xml" />'."\n",
                       esc_param($project), href(action=>"atom"));
+               printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
+                      'href="%s" type="application/atom+xml" />'."\n",
+                      esc_param($project), href(action=>"atom",
+                                                extra_options=>"--no-merges"));
        } else {
                printf('<link rel="alternate" title="%s projects list" '.
                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",