# Copyright (C) 2021 all contributors
# License: AGPL-3.0+
# for reading pipes and sockets off the DS event loop
package PublicInbox::InputPipe;
use strict;
use v5.10.1;
use parent qw(PublicInbox::DS);
use PublicInbox::Syscall qw(EPOLLIN EPOLLET);
sub consume {
my ($in, $cb, @args) = @_;
my $self = bless { cb => $cb, sock => $in, args => \@args },__PACKAGE__;
if ($PublicInbox::DS::in_loop) {
eval { $self->SUPER::new($in, EPOLLIN|EPOLLET) };
return $in->blocking(0) unless $@; # regular file sets $@
}
event_step($self) while $self->{sock};
}
sub event_step {
my ($self) = @_;
my ($r, $rbuf);
while (($r = sysread($self->{sock}, $rbuf, 65536))) {
$self->{cb}->(@{$self->{args} // []}, $rbuf);
}
if (defined($r)) { # EOF
$self->{cb}->(@{$self->{args} // []}, '');
} elsif ($!{EAGAIN}) {
return;
} else {
$self->{cb}->(@{$self->{args} // []}, undef)
}
$self->{sock}->blocking ? delete($self->{sock}) : $self->close
}
1;