wwwstream: use parent.pm and no warnings

[public-inbox.git] / lib / PublicInbox / WwwStream.pm

diff --git a/lib/PublicInbox/WwwStream.pm b/lib/PublicInbox/WwwStream.pm
index 3a867ec3a0de9f28592fbb782166d5943d86ae73..fd558e1b799bb45c8a86797f6b78d0afdcab483a 100644 (file)
--- a/lib/PublicInbox/WwwStream.pm
+++ b/lib/PublicInbox/WwwStream.pm
@@ -8,36 +8,41 @@
 # more common "push" model)
 package PublicInbox::WwwStream;
 use strict;
-use warnings;
+use parent qw(Exporter);
+our @EXPORT_OK = qw(html_oneshot);
+use bytes (); # length
 use PublicInbox::Hval qw(ascii_html prurl);
+use PublicInbox::GzipFilter qw(gzf_maybe);
 our $TOR_URL = 'https://www.torproject.org/';
 our $CODE_URL = 'https://public-inbox.org/public-inbox.git';
 
 # noop for HTTP.pm (and any other PSGI servers)
 sub close {}
 
-sub new {
-       my ($class, $ctx, $cb) = @_;
-
+sub base_url ($) {
+       my $ctx = shift;
        my $base_url = $ctx->{-inbox}->base_url($ctx->{env});
        chop $base_url; # no trailing slash for clone
-       bless {
-               nr => 0,
-               cb => $cb || \&close,
-               ctx => $ctx,
-               base_url => $base_url,
-       }, $class;
+       $base_url;
+}
+
+sub init {
+       my ($ctx, $cb) = @_;
+       $ctx->{cb} = $cb;
+       $ctx->{base_url} = base_url($ctx);
+       bless $ctx, __PACKAGE__;
 }
 
 sub response {
-       my ($class, $ctx, $code, $cb) = @_;
-       [ $code, [ 'Content-Type', 'text/html; charset=UTF-8' ],
-         $class->new($ctx, $cb) ]
+       my ($ctx, $code, $cb) = @_;
+       my $h = [ 'Content-Type', 'text/html; charset=UTF-8' ];
+       init($ctx, $cb);
+       $ctx->{gzf} = gzf_maybe($h, $ctx->{env});
+       [ $code, $h, $ctx ]
 }
 
-sub _html_top ($) {
-       my ($self) = @_;
-       my $ctx = $self->{ctx};
+sub html_top ($) {
+       my ($ctx) = @_;
        my $ibx = $ctx->{-inbox};
        my $desc = ascii_html($ibx->description);
        my $title = delete($ctx->{-title_html}) // $desc;
@@ -78,14 +83,13 @@ sub code_footer ($) {
 }
 
 sub _html_end {
-       my ($self) = @_;
+       my ($ctx) = @_;
        my $urls = 'Archives are clonable:';
-       my $ctx = $self->{ctx};
        my $ibx = $ctx->{-inbox};
        my $desc = ascii_html($ibx->description);
 
        my @urls;
-       my $http = $self->{base_url};
+       my $http = $ctx->{base_url};
        my $max = $ibx->max_git_epoch;
        my $dir = (split(m!/!, $http))[-1];
        my %seen = ($http => 1);
@@ -152,16 +156,36 @@ EOF
 
 # callback for HTTP.pm (and any other PSGI servers)
 sub getline {
-       my ($self) = @_;
-       my $nr = $self->{nr}++;
+       my ($ctx) = @_;
+       my $cb = $ctx->{cb};
+       my $buf = $cb->($ctx) if $cb;
+       $buf //= delete($ctx->{cb}) ? _html_end($ctx) : undef;
 
-       return _html_top($self) if $nr == 0;
+       # gzf may be GzipFilter, `undef' or `0'
+       my $gzf = $ctx->{gzf} or return $buf;
 
-       if (my $middle = $self->{cb}) {
-               $middle = $middle->($nr, $self->{ctx}) and return $middle;
-       }
+       return $gzf->translate($buf) if defined $buf;
+       $ctx->{gzf} = 0; # next call to ->getline returns $buf (== undef)
+       $gzf->translate(undef);
+}
 
-       delete $self->{cb} ? _html_end($self) : undef;
+sub html_oneshot ($$;$) {
+       my ($ctx, $code, $sref) = @_;
+       $ctx->{base_url} = base_url($ctx);
+       bless $ctx, __PACKAGE__;
+       my @x;
+       my $h = [ 'Content-Type' => 'text/html; charset=UTF-8',
+               'Content-Length' => undef ];
+       if (my $gzf = gzf_maybe($h, $ctx->{env})) {
+               $gzf->zmore(html_top($ctx));
+               $gzf->zmore($$sref) if $sref;
+               $x[0] = $gzf->zflush(_html_end($ctx));
+               $h->[3] = length($x[0]);
+       } else {
+               @x = (html_top($ctx), $sref ? $$sref : (), _html_end($ctx));
+               $h->[3] += bytes::length($_) for @x;
+       }
+       [ $code, $h, \@x ]
 }
 
 1;