# Copyright (C) 2017 all contributors
# License: AGPL-3.0+
# Filter for lists.ruby-lang.org trailers
package PublicInbox::Filter::RubyLang;
use base qw(PublicInbox::Filter::Base);
use strict;
use warnings;
my $l1 = qr/Unsubscribe:\s
/x;
my $l2 = qr{};
sub new {
my ($class, %opts) = @_;
my $altid = delete $opts{-altid};
my $self = $class->SUPER::new(%opts);
my $ibx = $self->{-inbox};
# altid = serial:ruby-core:file=msgmap.sqlite3
if (!$altid && $ibx && $ibx->{altid}) {
$altid ||= $ibx->{altid}->[0];
}
if ($altid) {
require PublicInbox::MID; # mid_clean
require PublicInbox::AltId;
$self->{-altid} = PublicInbox::AltId->new($ibx, $altid, 1);
}
$self;
}
sub scrub {
my ($self, $mime) = @_;
# no msg_iter here, that is only for read-only access
$mime->walk_parts(sub {
my ($part) = $_[0];
my $ct = $part->content_type;
if (!$ct || $ct =~ m{\btext/plain\b}i) {
my $s = eval { $part->body_str };
if (defined $s && $s =~ s/\n?$l1\n$l2\n\z//os) {
$part->body_str_set($s);
}
}
});
my $altid = $self->{-altid};
if ($altid) {
my $hdr = $mime->header_obj;
my $mid = $hdr->header_raw('Message-ID');
unless (defined $mid) {
return $self->REJECT('Message-Id missing');
}
my $n = $hdr->header_raw('X-Mail-Count');
if (!defined($n) || $n !~ /\A\s*\d+\s*\z/) {
return $self->REJECT('X-Mail-Count not numeric');
}
$mid = PublicInbox::MID::mid_clean($mid);
$altid->{mm_alt}->mid_set($n, $mid);
}
$self->ACCEPT($mime);
}
sub delivery {
my ($self, $mime) = @_;
$self->scrub($mime);
}
1;