-# Copyright (C) 2015-2020 all contributors <meta@public-inbox.org>
+# Copyright (C) 2015-2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
package PublicInbox::MboxGz;
use strict;
-use warnings;
+use parent 'PublicInbox::GzipFilter';
use PublicInbox::Eml;
use PublicInbox::Hval qw/to_filename/;
use PublicInbox::Mbox;
-use Compress::Raw::Zlib qw(Z_FINISH Z_OK);
-my %OPT = (-WindowBits => 15 + 16, -AppendOutput => 1);
-
-sub new {
- my ($class, $ctx, $cb) = @_;
- $ctx->{base_url} = $ctx->{-inbox}->base_url($ctx->{env});
- my ($gz, $err) = Compress::Raw::Zlib::Deflate->new(%OPT);
- $err == Z_OK or die "Deflate->new failed: $err";
- bless { gz => $gz, cb => $cb, ctx => $ctx }, $class;
+*msg_hdr = \&PublicInbox::Mbox::msg_hdr;
+*msg_body = \&PublicInbox::Mbox::msg_body;
+
+sub async_next ($) {
+ my ($http) = @_; # PublicInbox::HTTP
+ my $ctx = $http->{forward} or return;
+ eval {
+ $ctx->{smsg} = $ctx->{cb}->($ctx) or return $ctx->close;
+ $ctx->smsg_blob($ctx->{smsg});
+ };
+ warn "E: $@" if $@;
}
-sub response {
- my ($class, $ctx, $cb, $fn) = @_;
- my $body = $class->new($ctx, $cb);
+sub mbox_gz {
+ my ($self, $cb, $fn) = @_;
+ $self->{cb} = $cb;
+ $self->{base_url} = $self->{ibx}->base_url($self->{env});
+ $self->{gz} = PublicInbox::GzipFilter::gzip_or_die();
+ $fn = to_filename($fn // '') // 'no-subject';
# http://www.iana.org/assignments/media-types/application/gzip
- $fn = defined($fn) && $fn ne '' ? to_filename($fn) : 'no-subject';
- my $h = [ qw(Content-Type application/gzip),
- 'Content-Disposition', "inline; filename=$fn.mbox.gz" ];
- [ 200, $h, $body ];
-}
-
-sub gzip_fail ($$) {
- my ($ctx, $err) = @_;
- $ctx->{env}->{'psgi.errors'}->print("deflate failed: $err\n");
- '';
+ bless $self, __PACKAGE__;
+ my $res_hdr = [ 'Content-Type' => 'application/gzip',
+ 'Content-Disposition' => "inline; filename=$fn.mbox.gz" ];
+ $self->psgi_response(200, $res_hdr);
}
-# called by Plack::Util::foreach or similar
+# called by Plack::Util::foreach or similar (generic PSGI)
sub getline {
my ($self) = @_;
- my $ctx = $self->{ctx} or return;
- my $gz = $self->{gz};
- my $buf = delete($self->{buf});
- while (my $smsg = $self->{cb}->($ctx)) {
- my $mref = $ctx->{-inbox}->msg_by_smsg($smsg) or next;
- my $h = PublicInbox::Eml->new($mref)->header_obj;
-
- my $err = $gz->deflate(
- PublicInbox::Mbox::msg_hdr($ctx, $h, $smsg->{mid}),
- $buf);
- return gzip_fail($ctx, $err) if $err != Z_OK;
-
- $err = $gz->deflate(PublicInbox::Mbox::msg_body($$mref), $buf);
- return gzip_fail($ctx, $err) if $err != Z_OK;
-
- return $buf if length($buf) >= 8192;
-
- # be fair to other clients on public-inbox-httpd:
- $self->{buf} = $buf;
- return '';
+ my $cb = $self->{cb} or return;
+ while (my $smsg = $cb->($self)) {
+ my $eml = $self->{ibx}->smsg_eml($smsg) or next;
+ $self->zmore(msg_hdr($self, $eml));
+ return $self->translate(msg_body($eml));
}
# signal that we're done and can return undef next call:
- delete $self->{ctx};
- my $err = $gz->flush($buf, Z_FINISH);
- ($err == Z_OK) ? $buf : gzip_fail($ctx, $err);
+ delete $self->{cb};
+ $self->zflush;
}
-sub close {} # noop
-
+no warnings 'once';
+*async_eml = \&PublicInbox::Mbox::async_eml;
1;