[PATCH] gitweb: Support for snapshot

["Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxx>]

Now I read RFC 2616  the content-encoding need to be specified as x-gzip. 
Also i am not sure whether the fact that it is registered with IANA exempt us from
adding it to html header.

The corrected patch below. 

This adds snapshort support in gitweb. To enable one need to
set gitweb.snapshot = true in the config file.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxx>
---
 gitweb/gitweb.perl |   41 +++++++++++++++++++++++++++++++++++++----
 1 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 04282fa..d6f96a3 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -15,6 +15,7 @@ use CGI::Carp qw(fatalsToBrowser);
 use Encode;
 use Fcntl ':mode';
 use File::Find qw();
+use File::Basename qw(basename);
 binmode STDOUT, ':utf8';
 
 our $cgi = new CGI;
@@ -175,6 +176,7 @@ my %actions = (
 	"tag" => \&git_tag,
 	"tags" => \&git_tags,
 	"tree" => \&git_tree,
+	"snapshot" => \&git_snapshot,
 );
 
 $action = 'summary' if (!defined($action));
@@ -1320,6 +1322,7 @@ sub git_difftree_body {
 sub git_shortlog_body {
 	# uses global variable $project
 	my ($revlist, $from, $to, $refs, $extra) = @_;
+	my $have_snapshot = git_get_project_config_bool('snapshot');
 	$from = 0 unless defined $from;
 	$to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
 
@@ -1344,8 +1347,11 @@ sub git_shortlog_body {
 		print "</td>\n" .
 		      "<td class=\"link\">" .
 		      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
-		      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
-		      "</td>\n" .
+		      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
+		if ($have_snapshot) {
+			print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
+		}
+		print "</td>\n" .
 		      "</tr>\n";
 	}
 	if (defined $extra) {
@@ -2112,6 +2118,29 @@ sub git_tree {
 	git_footer_html();
 }
 
+sub git_snapshot {
+
+	if (!defined $hash) {
+		$hash = git_get_head_hash($project);
+	}
+
+	my $filename = basename($project) . "-$hash.tar.gz";
+
+	print $cgi->header(-type => 'application/x-tar',
+			-content-encoding => 'x-gzip',
+			'-content-disposition' => "inline; filename=\"$filename\"",
+			-status => '200 OK');
+
+	open my $fd, "-|", "$GIT tar-tree $hash \'$project\' | gzip" or
+				die_error(undef, "Execute git-tar-tree failed.");
+	binmode STDOUT, ':raw';
+	print <$fd>;
+	binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
+	close $fd;
+
+
+}
+
 sub git_log {
 	my $head = git_get_head_hash($project);
 	if (!defined $hash) {
@@ -2206,6 +2235,7 @@ sub git_commit {
 	}
 	my $refs = git_get_references();
 	my $ref = format_ref_marker($refs, $co{'id'});
+	my $have_snapshot = git_get_project_config_bool('snapshot');
 	my $formats_nav = '';
 	if (defined $file_name && defined $co{'parent'}) {
 		my $parent = $co{'parent'};
@@ -2241,8 +2271,11 @@ sub git_commit {
 	      "<td class=\"sha1\">" .
 	      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash), class => "list"}, $co{'tree'}) .
 	      "</td>" .
-	      "<td class=\"link\">" . $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)}, "tree") .
-	      "</td>" .
+	      "<td class=\"link\">" . $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)}, "tree");
+	if ($have_snapshot) {
+		print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
+	}
+	print "</td>" .
 	      "</tr>\n";
 	my $parents = $co{'parents'};
 	foreach my $par (@$parents) {
-- 
1.4.2.rc1.g83e1-dirty