[PATCH (backport for warthog9/gitweb.git)] gitweb: Separate search regexp from search text

[Jakub Narebski <jnareb@gmail.com>]

Separate search text, which is saved in $searchtext global variable,
and is used in links, as default value for the textfield in search
form, and for pickaxe search, from search regexp, which is saved in
$search_regexp global variable, and is used as parameter to --grep,
--committer or --author options to git-rev-list, and for searching
commit body in gitweb.  For now $search_regexp is unconditionally
equal to quotemeta($searchtext), meaning that we always search for
fixed string.

This fixes bug where 'next page' links for 'search' view didn't work
for searchtext containing quotable characters, like `@'.

(manually cherry picked from 7e431ef9ab933d7ff899a999e40627ab49774f3a)

Olaf Hering noticed that this bug was still present, and this bugfix
was not ported to kernel.org's fork of gitweb.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
On Thu, 30 Apr 2009, J.H. wrote:
> Jakub Narebski wrote:
 
> > I have just checked that current gitweb (1.6.2.rc1.20.g8c5b)
> > does not have this bug...
[...]
> > ... so J.H., or Lea Wiemann, or whoever manages gitweb on kernel.org
> > should backport this fix to kernel.org's fork of gitweb sources.
> 
> Patches, as always, are welcome - I've got a few queued up already, but 
> if I have to do it I won't be getting back around to it for a bit (there 
> are other things on my priority list right now).

Here you have backport of 7e431ef (gitweb: Separate search regexp from 
search text) on top of 'master' branch of kernel.org's fork of gitweb:
  git://git.kernel.org/pub/scm/git/warthog9/gitweb.git

The only difference is that git_search_grep_body is in separate
gitweb/gitweb/search.pm file in kernel.org's fork.  The change
is otherwise identical.

Not tested!

 gitweb/gitweb.perl      |    5 +++--
 gitweb/gitweb/search.pm |    2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 984161c..aee9239 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -231,6 +231,7 @@ if (defined $page) {
 }
 
 our $searchtext = $cgi->param('s');
+our $search_regexp;
 if (defined $searchtext) {
 	if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 		die_error(undef, "Invalid search parameter");
@@ -238,7 +239,7 @@ if (defined $searchtext) {
 	if (length($searchtext) < 2) {
 		die_error(undef, "At least two characters are required for search parameter");
 	}
-	$searchtext = quotemeta $searchtext;
+	$search_regexp = quotemeta $searchtext;
 }
 
 our $searchtype = $cgi->param('st');
@@ -1702,7 +1703,7 @@ sub git_search {
 		} elsif ($searchtype eq 'committer') {
 			$greptype = "--committer=";
 		}
-		$greptype .= $searchtext;
+		$greptype .= $search_regexp;
 		my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
 
 		my $paging_nav = '';
diff --git a/gitweb/gitweb/search.pm b/gitweb/gitweb/search.pm
index f1aea0a..a381f4e 100644
--- a/gitweb/gitweb/search.pm
+++ b/gitweb/gitweb/search.pm
@@ -33,7 +33,7 @@ sub git_search_grep_body {
 				esc_html(chop_str($co{'title'}, 50)) . "<br/>");
 		my $comment = $co{'comment'};
 		foreach my $line (@$comment) {
-			if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
+			if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
 				my $lead = esc_html($1) || "";
 				$lead = chop_str($lead, 30, 10);
 				my $match = esc_html($2) || "";
-- 
1.6.2