# Copyright (C) 2016 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>

# Wrap a pipe or file for PSGI streaming response bodies and calls the
# end callback when the object goes out-of-scope.
# This depends on rpipe being _blocking_ on getline.
package PublicInbox::GetlineBody;
use strict;
use warnings;

sub new {
	my ($class, $rpipe, $end, $buf) = @_;
	bless { rpipe => $rpipe, end => $end, buf => $buf }, $class;
}

sub DESTROY { $_[0]->close }

sub getline {
	my ($self) = @_;
	my $buf = delete $self->{buf};
	defined $buf ? $buf : $self->{rpipe}->getline;
}

sub close {
	my ($self) = @_;
	delete $self->{rpipe};
	my $end = delete $self->{end} or return;
	$end->();
}

1;