1 files changed, 44 insertions, 0 deletions
diff --git a/lib/PublicInbox/RepoTree.pm b/lib/PublicInbox/RepoTree.pm
new file mode 100644
index 00000000..7f2ff206
--- /dev/null
+++ b/lib/PublicInbox/RepoTree.pm
@@ -0,0 +1,44 @@
+# Copyright (C) all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+#
+# cgit-compatible $REPO/tree/[PATH]?h=$tip redirector
+package PublicInbox::RepoTree;
+use v5.12;
+use PublicInbox::ViewDiff qw(uri_escape_path);
+use PublicInbox::GitAsyncCat;
+use PublicInbox::WwwStatic qw(r);
+
+sub tree_30x { # git check_async callback
+        my ($oid, $type, $size, $ctx) = @_;
+        my $wcb = delete $ctx->{-wcb};
+        return $wcb->(r(404)) if $type eq 'missing';
+        my $u = $ctx->{git}->base_url($ctx->{env});
+        my $path = uri_escape_path(delete $ctx->{-path});
+        $u .= "$oid/s/?b=$path";
+        $wcb->([ 302, [ Location => $u, 'Content-Type' => 'text/plain' ],
+                [ "Redirecting to $u\n" ] ])
+}
+
+sub srv_tree {
+        my ($ctx, $path) = @_;
+        return if index($path, '//') >= 0 || index($path, '/') == 0;
+        my $tip = $ctx->{qp}->{h} // 'HEAD';
+        $path =~ s!/\z!!;
+        my $obj = $ctx->{-obj} = "$tip:$path";
+        $ctx->{-path} = $path;
+
+        # "\n" breaks with `git cat-file --batch-check', and there's no
+        # legitimate use of "\n" in filenames anyways.
+        return if index($obj, "\n") >= 0;
+        sub {
+                $ctx->{-wcb} = $_[0]; # HTTP::{Chunked,Identity}
+                if ($ctx->{env}->{'pi-httpd.async'}) {
+                        async_check($ctx, $obj, \&tree_30x, $ctx);
+                } else {
+                        $ctx->{git}->check_async($obj, \&tree_30x, $ctx);
+                        $ctx->{git}->async_wait_all;
+                }
+        };
+}
+
+1;