+use PublicInbox::MID qw/mid_escape/;
+use PublicInbox::Hval qw/to_filename/;
+use PublicInbox::Smsg;
+use PublicInbox::WwwStream qw(html_oneshot);
+use Email::Simple;
+use Email::MIME::Encode;
+
+sub subject_fn ($) {
+ my ($hdr) = @_;
+ my $fn = $hdr->header('Subject');
+ return 'no-subject' if (!defined($fn) || $fn eq '');
+
+ # no need for full Email::MIME, here
+ if ($fn =~ /=\?/) {
+ eval { $fn = Encode::decode('MIME-Header', $fn) };
+ return 'no-subject' if $@;
+ }
+ $fn =~ s/^re:\s+//i;
+ $fn eq '' ? 'no-subject' : to_filename($fn);
+}
+
+sub mb_stream {
+ my ($more) = @_;
+ bless $more, 'PublicInbox::Mbox';
+}
+
+# called by PSGI server as body response
+# this gets called twice for every message, once to return the header,
+# once to retrieve the body
+sub getline {
+ my ($more) = @_; # self
+ my ($ctx, $id, $prev, $next, $mref, $hdr) = @$more;
+ if ($hdr) { # first message hits this, only
+ pop @$more; # $hdr
+ pop @$more; # $mref
+ return msg_hdr($ctx, $hdr) . msg_body($$mref);
+ }
+ my $cur = $next or return;
+ my $ibx = $ctx->{-inbox};
+ $next = $ibx->over->next_by_mid($ctx->{mid}, \$id, \$prev);
+ $mref = $ibx->msg_by_smsg($cur) or return;
+ $hdr = Email::Simple->new($mref)->header_obj;
+ @$more = ($ctx, $id, $prev, $next); # $next may be undef, here
+ msg_hdr($ctx, $hdr) . msg_body($$mref);
+}
+
+sub close {} # noop
+
+# /$INBOX/$MESSAGE_ID/raw
+sub emit_raw {
+ my ($ctx) = @_;
+ my $mid = $ctx->{mid};
+ my $ibx = $ctx->{-inbox};
+ $ctx->{base_url} = $ibx->base_url($ctx->{env});
+ my ($mref, $more, $id, $prev, $next);
+ if (my $over = $ibx->over) {
+ my $smsg = $over->next_by_mid($mid, \$id, \$prev) or return;
+ $mref = $ibx->msg_by_smsg($smsg) or return;
+ $next = $over->next_by_mid($mid, \$id, \$prev);
+ } else {
+ $mref = $ibx->msg_by_mid($mid) or return;
+ }
+ my $hdr = Email::Simple->new($mref)->header_obj;
+ $more = [ $ctx, $id, $prev, $next, $mref, $hdr ]; # for ->getline
+ my $fn = subject_fn($hdr);
+ my @hdr = ('Content-Type');
+ if ($ibx->{obfuscate}) {
+ # obfuscation is stupid, but maybe scrapers are, too...
+ push @hdr, 'application/mbox';
+ $fn .= '.mbox';
+ } else {
+ push @hdr, 'text/plain';
+ $fn .= '.txt';
+ }
+ push @hdr, 'Content-Disposition', "inline; filename=$fn";
+ [ 200, \@hdr, mb_stream($more) ];