use Email::Simple;
use PublicInbox::Hval qw/to_filename/;
use PublicInbox::Mbox;
-use IO::Compress::Gzip;
+use Compress::Raw::Zlib qw(Z_FINISH Z_OK);
+my %OPT = (-WindowBits => 15 + 16, -AppendOutput => 1);
sub new {
my ($class, $ctx, $cb) = @_;
- my $buf = '';
$ctx->{base_url} = $ctx->{-inbox}->base_url($ctx->{env});
- bless {
- buf => \$buf,
- gz => IO::Compress::Gzip->new(\$buf, Time => 0),
- cb => $cb,
- ctx => $ctx,
- }, $class;
+ my ($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;
}
sub response {
my $body = $class->new($ctx, $cb);
# http://www.iana.org/assignments/media-types/application/gzip
my @h = qw(Content-Type application/gzip);
- if ($fn) {
+ if (defined $fn && $fn ne '') {
$fn = to_filename($fn);
push @h, 'Content-Disposition', "inline; filename=$fn.mbox.gz";
}
[ 200, \@h, $body ];
}
+sub gzip_fail ($$) {
+ my ($ctx, $err) = @_;
+ $ctx->{env}->{'psgi.errors'}->print("deflate failed: $err\n");
+ '';
+}
+
# called by Plack::Util::foreach or similar
sub getline {
my ($self) = @_;
my $ctx = $self->{ctx} or return;
my $gz = $self->{gz};
- while (my $smsg = $self->{cb}->()) {
+ my $buf = delete($self->{buf});
+ while (my $smsg = $self->{cb}->($ctx)) {
my $mref = $ctx->{-inbox}->msg_by_smsg($smsg) or next;
my $h = Email::Simple->new($mref)->header_obj;
- $gz->write(PublicInbox::Mbox::msg_hdr($ctx, $h, $smsg->{mid}));
- $gz->write(PublicInbox::Mbox::msg_body($$mref));
- my $bref = $self->{buf};
- if (length($$bref) >= 8192) {
- my $ret = $$bref; # copy :<
- ${$self->{buf}} = '';
- return $ret;
- }
+ 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} = $buf;
return '';
}
- delete($self->{gz})->close;
# signal that we're done and can return undef next call:
delete $self->{ctx};
- ${delete $self->{buf}};
+ my $err = $gz->flush($buf, Z_FINISH);
+ ($err == Z_OK) ? $buf : gzip_fail($ctx, $err);
}
sub close {} # noop