diff options
Diffstat (limited to 'lib/PublicInbox/GzipFilter.pm')
| -rw-r--r-- | lib/PublicInbox/GzipFilter.pm | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/lib/PublicInbox/GzipFilter.pm b/lib/PublicInbox/GzipFilter.pm index 95fced05..8cc5ea00 100644 --- a/lib/PublicInbox/GzipFilter.pm +++ b/lib/PublicInbox/GzipFilter.pm @@ -42,7 +42,7 @@ sub gzf_maybe ($$) { # for GetlineBody (via Qspawn) when NOT using $env->{'pi-httpd.async'} # Also used for ->getline callbacks sub translate ($$) { - my $self = $_[0]; + my $self = $_[0]; # $_[1] => input # allocate the zlib context lazily here, instead of in ->new. # Deflate contexts are memory-intensive and this object may @@ -72,10 +72,34 @@ sub write { $_[0]->{fh}->write(translate($_[0], $_[1])); } +# similar to ->translate; use this when we're sure we know we have +# more data to buffer after this +sub zmore { + my $self = $_[0]; # $_[1] => input + my $err = $self->{gz}->deflate($_[1], $self->{zbuf}); + die "gzip->deflate: $err" if $err != Z_OK; + ''; +} + +# flushes and returns the final bit of gzipped data +sub zflush ($;$) { + my $self = $_[0]; # $_[1] => final input (optional) + my $zbuf = delete $self->{zbuf}; + my $gz = delete $self->{gz}; + my $err; + if (defined $_[1]) { + $err = $gz->deflate($_[1], $zbuf); + die "gzip->deflate: $err" if $err != Z_OK; + } + $err = $gz->flush($zbuf, Z_FINISH); + die "gzip->flush: $err" if $err != Z_OK; + $zbuf; +} + sub close { my ($self) = @_; my $fh = delete $self->{fh}; - $fh->write(translate($self, undef)); + $fh->write(zflush($self)); $fh->close; } |