view: rework single message page to compress earlier

We can rely on deflate to compress large thread skeletons on
single message pages.  Subsequent commits will compress bodies,
as well.

1 files changed, 12 insertions, 2 deletions

diff --git a/lib/PublicInbox/WwwStream.pm b/lib/PublicInbox/WwwStream.pm
index f2777fdc..115e0440 100644
--- a/lib/PublicInbox/WwwStream.pm
+++ b/lib/PublicInbox/WwwStream.pm
@@ -27,6 +27,9 @@ sub init {
         my ($ctx, $cb) = @_;
         $ctx->{cb} = $cb;
         $ctx->{base_url} = base_url($ctx);
+        $ctx->{-res_hdr} = [ 'Content-Type' => 'text/html; charset=UTF-8' ];
+        $ctx->{gz} = PublicInbox::GzipFilter::gz_or_noop($ctx->{-res_hdr},
+                                                        $ctx->{env});
         bless $ctx, __PACKAGE__;
 }
 
@@ -164,6 +167,14 @@ sub getline {
         $ctx->zflush(_html_end($ctx));
 }
 
+sub html_done ($$) {
+        my ($ctx, $code) = @_;
+        my $bdy = $ctx->zflush(_html_end($ctx));
+        my $res_hdr = delete $ctx->{-res_hdr};
+        push @$res_hdr, 'Content-Length', length($bdy);
+        [ $code, $res_hdr, [ $bdy ] ]
+}
+
 sub html_oneshot ($$;@) {
         my ($ctx, $code) = @_[0, 1];
         my $res_hdr = [ 'Content-Type' => 'text/html; charset=UTF-8',
@@ -195,9 +206,8 @@ sub async_next ($) {
 
 sub aresponse {
         my ($ctx, $code, $cb) = @_;
-        my $res_hdr = [ 'Content-Type' => 'text/html; charset=UTF-8' ];
         init($ctx, $cb);
-        $ctx->psgi_response($code, $res_hdr);
+        $ctx->psgi_response($code, delete $ctx->{-res_hdr});
 }
 
 sub html_init {