gitweb: SHA-1 in commit log message links to "object" view

Instead of checking if explicit SHA-1 in commit log message is sha1 of
commit and making link to "commit" view, make [fragment of] explicit
SHA-1 in commit log message link to "object" view.  While at it allow
to hyperlink also shortened SHA-1, from 8 characters up to full SHA-1,
instead of requiring full 40 characters of SHA-1.

This makes the following changes:

* SHA-1 of objects which no longer exists, for example in commit
cherry-picked from no longer existing temporary branch, or revert
of commit in rebased branch, are no longer marked as such by not
being made into hyperlink (and not having default hyperlink view:
being underlined among others).  On the other hand it makes gitweb
to not write error messages when object is not found to web serwer
log; it also moves cost of getting type and SHA-1 validation to
when link is clicked, and not only viewed.

* SHA-1 of other objects: blobs, trees, tags are also hyperlinked
and lead to appropriate view (although in the case of tags it is
more natural to just use tag name).

* You can put shortened SHA-1 of commit in the commit message, and it
would be hyperlinked; it would be checked on clicking if abbrev is
unique.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index d902913966f54a8c10906c11c168bb07a90e78e4..040ee719f0df34f948871670e9a8936fd73eb327 100755 (executable)
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -828,14 +828,12 @@ sub format_log_line_html {
        my $line = shift;
 
        $line = esc_html($line, -nbsp=>1);
-       if ($line =~ m/([0-9a-fA-F]{40})/) {
+       if ($line =~ m/([0-9a-fA-F]{8,40})/) {
                my $hash_text = $1;
-               if (git_get_type($hash_text) eq "commit") {
-                       my $link =
-                               $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
-                                       -class => "text"}, $hash_text);
-                       $line =~ s/$hash_text/$link/;
-               }
+               my $link =
+                       $cgi->a({-href => href(action=>"object", hash=>$hash_text),
+                               -class => "text"}, $hash_text);
+               $line =~ s/$hash_text/$link/;
        }
        return $line;
 }