1 # Copyright (C) 2014-2015 all contributors <meta@public-inbox.org>
2 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
4 # Used for displaying the HTML web interface.
5 # See Documentation/design_www.txt for this.
6 package PublicInbox::View;
9 use URI::Escape qw/uri_escape_utf8/;
10 use Date::Parse qw/str2time/;
11 use Encode::MIME::Header;
13 use PublicInbox::Hval qw/ascii_html/;
14 use PublicInbox::Linkify;
15 use PublicInbox::MID qw/mid_clean id_compress mid_mime/;
16 use PublicInbox::MsgIter;
17 use PublicInbox::Address;
18 use PublicInbox::WwwStream;
21 use constant INDENT => ' ';
22 use constant TCHILD => '` ';
23 sub th_pfx ($) { $_[0] == 0 ? '' : TCHILD };
25 # public functions: (unstable)
27 my ($ctx, $mime, $footer) = @_;
28 my $hdr = $mime->header_obj;
29 my $tip = _msg_html_prepare($hdr, $ctx);
30 PublicInbox::WwwStream->new($ctx, sub {
33 $tip . multipart_text_as_html($mime, '') .
36 # fake an EOF if generating the footer fails;
37 # we want to at least show the message if something
40 '<pre>' . html_footer($hdr, 1, $ctx) .
41 '</pre>' . msg_reply($ctx, $hdr)
49 # /$INBOX/$MESSAGE_ID/#R
52 my $se_url = 'https://git-htmldocs.bogomips.org/git-send-email.html';
54 my ($arg, $link) = mailto_arg_link($hdr);
55 push @$arg, '/path/to/YOUR_REPLY';
58 "You may reply publically to <a\nhref=#t>this message</a> via\n".
59 "plain-text email using any one of the following methods:\n\n" .
60 "* Save the following mbox file, import it into your mail client,\n" .
61 " and reply-to-all from there: <a\nhref=raw>mbox</a>\n\n" .
62 "* Reply to all the recipients using the <b>--to</b>, <b>--cc</b>,\n" .
63 " and <b>--in-reply-to</b> switches of git-send-email(1):\n\n" .
64 " git send-email \\\n " .
65 join(" \\\n ", @$arg ). "\n\n" .
66 qq( <a\nhref="$se_url">$se_url</a>\n\n) .
67 "* If your mail client supports setting the <b>In-Reply-To</b>" .
68 " header\n via mailto: links, try the " .
69 qq(<a\nhref="$link">mailto: link</a>\n) .
75 my $irt = $hdr->header_raw('In-Reply-To');
77 return mid_clean($irt) if (defined $irt);
79 my $refs = $hdr->header_raw('References');
80 if ($refs && $refs =~ /<([^>]+)>\s*\z/s) {
87 my ($hdr, $field) = @_;
88 my $val = $hdr->header($field) or return '';
89 ascii_html(join(', ', PublicInbox::Address::names($val)));
93 my ($nr, $singular, $plural) = @_;
94 return "0 $plural" if $nr == 0;
95 $nr == 1 ? "$nr $singular" : "$nr $plural";
98 # this is already inside a <pre>
100 my ($mime, $ctx, $more) = @_;
101 my $srch = $ctx->{srch};
102 my $hdr = $mime->header_obj;
103 my $subj = $hdr->header('Subject');
105 my $mid_raw = mid_clean(mid_mime($mime));
106 my $id = id_compress($mid_raw);
108 my $mid = PublicInbox::Hval->new_msgid($mid_raw);
110 my $root_anchor = $ctx->{root_anchor} || '';
111 my $irt = in_reply_to($hdr);
113 my $rv = '<b>'.ascii_html($subj).'</b>';
114 $rv = "<u\nid=u>$rv</u>" if $root_anchor eq $id_m;
116 $rv .= _th_index_lite($mid_raw, $irt, $id, $ctx);
118 foreach my $f (qw(To Cc)) {
119 my $dst = _hdr_names($hdr, $f);
120 push @tocc, "$f: $dst" if $dst ne '';
122 my $mapping = $ctx->{mapping};
123 $rv .= "From: "._hdr_names($hdr, 'From').' @ '._msg_date($hdr)." UTC";
124 my $upfx = $ctx->{-upfx};
125 $rv .= qq{ (<a\nhref="$upfx$mid_raw/">permalink</a> / };
126 $rv .= qq{<a\nhref="$upfx$mid_raw/raw">raw</a>)\n};
127 $rv .= ' '.join('; +', @tocc) . "\n" if @tocc;
128 if (!$mapping && $irt) {
129 $rv .= qq(In-Reply-To: <<a\nhref="$upfx$irt/">$irt</a>>\n)
133 # scan through all parts, looking for displayable text
134 my $href = $mid->as_href;
135 my $mhref = $ctx->{-upfx}.$href.'/';
136 msg_iter($mime, sub { $rv .= add_text_body($mhref, $_[0]) });
139 $rv .= "\n<a\nhref=#$id_m\nid=e$id>^</a> ".
140 "<a\nhref=\"$mhref\">permalink</a>" .
141 " / <a\nhref=\"${mhref}raw\">raw</a>" .
142 " / <a\nhref=\"${mhref}#R\">reply</a>";
143 if (my $pct = $ctx->{pct}) { # used by SearchView.pm
144 $rv .= " [relevance $pct->{$mid_raw}%]";
146 my $threaded = 'threaded';
150 $flat = "<b>$flat</b>";
152 $threaded = "<b>$threaded</b>";
154 $rv .= " [<a\nhref=\"${mhref}t/#u\">$threaded</a>";
155 $rv .= "|<a\nhref=\"${mhref}T/#u\">$flat</a>]";
158 $rv .= $more ? "\n\n" : "\n";
161 sub pad_link ($$;$) {
162 my ($mid, $level, $s) = @_;
164 my $id = id_compress($mid, 1);
165 (' 'x19).indent_for($level).th_pfx($level)."<a\nhref=#r$id>($s)</a>\n";
169 my ($mid_raw, $irt, $id, $ctx) = @_;
171 my $mapping = $ctx->{mapping} or return $rv;
173 # map = [children, attr, node, idx, level]
174 my $map = $mapping->{$mid_raw};
175 my $nr_c = scalar @{$map->[0]};
177 my $level = $map->[4];
180 my $irt_map = $mapping->{$irt};
181 my $siblings = $irt_map->[0];
182 $nr_s = scalar(@$siblings) - 1;
183 $rv .= $pad . $irt_map->[1];
185 my $prev = $siblings->[$idx - 1];
186 my $pmid = $prev->messageid;
188 my $s = ($idx - 1). ' preceding siblings ...';
189 $rv .= pad_link($pmid, $level, $s);
190 } elsif ($idx == 2) {
191 my $ppmid = $siblings->[0]->messageid;
192 $rv .= $pad . $mapping->{$ppmid}->[1];
194 $rv .= $pad . $mapping->{$pmid}->[1];
197 my $s_s = nr_to_s($nr_s, 'sibling', 'siblings');
198 my $s_c = nr_to_s($nr_c, 'reply', 'replies');
199 my $this = $map->[1];
200 $this =~ s!\n\z!</b>\n!s;
201 $this =~ s!<a\nhref.*</a> !!s; # no point in duplicating subject
203 my $node = $map->[2];
204 if (my $child = $node->child) {
205 my $cmid = $child->messageid;
206 $rv .= $pad . $mapping->{$cmid}->[1];
208 my $s = ($nr_c - 1). ' more replies';
209 $rv .= pad_link($cmid, $level + 1, $s);
210 } elsif (my $cn = $child->next) {
211 $rv .= $pad . $mapping->{$cn->messageid}->[1];
214 if (my $next = $node->next) {
215 my $nmid = $next->messageid;
216 $rv .= $pad . $mapping->{$nmid}->[1];
217 my $nnext = $nr_s - $idx;
219 my $s = ($nnext - 1).' subsequent siblings';
220 $rv .= pad_link($nmid, $level, $s);
221 } elsif (my $nn = $next->next) {
222 $rv .= $pad . $mapping->{$nn->messageid}->[1];
225 $rv .= "<a\nhref=#e$id\nid=m$id>_</a> <a\nhref=#r$id>$s_s, $s_c</a>\n";
229 my ($th, $ctx, $cb) = @_;
230 my @q = map { (0, $_) } $th->rootset;
232 my $level = shift @q;
233 my $node = shift @q or next;
234 $cb->($ctx, $level, $node);
235 unshift @q, $level+1, $node->child, $level, $node->next;
240 my ($ctx, $level, $node) = @_;
241 my $mapping = $ctx->{mapping};
243 if (my $parent = $node->parent) {
244 my $m = $mapping->{$parent->messageid}->[0];
248 $mapping->{$node->messageid} = [ [], '', $node, $idx, $level ];
249 skel_dump($ctx, $level, $node);
252 sub thread_index_entry {
253 my ($ctx, $level, $mime) = @_;
254 my ($beg, $end) = thread_adj_level($ctx, $level);
255 $beg . '<pre>' . index_entry($mime, $ctx, 0) . '</pre>' . $end;
258 sub stream_thread ($$) {
260 my $inbox = $ctx->{-inbox};
262 my @q = map { (0, $_) } $th->rootset;
266 my $node = shift @q or next;
267 unshift @q, $level+1, $node->child, $level, $node->next;
268 $mime = $inbox->msg_by_mid($node->messageid) and last;
270 return missing_thread($ctx) unless $mime;
272 $mime = Email::MIME->new($mime);
273 $ctx->{-title_html} = ascii_html($mime->header('Subject'));
274 $ctx->{-html_tip} = thread_index_entry($ctx, $level, $mime);
275 my $body = PublicInbox::WwwStream->new($ctx, sub {
279 my $node = shift @q or next;
280 unshift @q, $level+1, $node->child, $level, $node->next;
281 my $mid = $node->messageid;
282 if ($mime = $inbox->msg_by_mid($mid)) {
283 $mime = Email::MIME->new($mime);
284 return thread_index_entry($ctx, $level, $mime);
286 return ghost_index_entry($ctx, $level, $mid);
289 my $ret = join('', thread_adj_level($ctx, 0));
290 $ret .= ${$ctx->{dst}}; # skel
294 [ 200, ['Content-Type', 'text/html; charset=UTF-8'], $body ];
299 my $mid = $ctx->{mid};
300 my $sres = $ctx->{srch}->get_thread($mid, { asc => 1 });
301 my $msgs = load_results($sres);
302 my $nr = $sres->{total};
303 return missing_thread($ctx) if $nr == 0;
304 my $skel = '<hr /><pre>';
305 $skel .= $nr == 1 ? 'only message in thread' : 'end of thread';
306 $skel .= ", back to <a\nhref=\"../../\">index</a>";
307 $skel .= "\n<a\nid=t>$nr+ messages in thread:</a> (download: ";
308 $skel .= "<a\nhref=\"../t.mbox.gz\">mbox.gz</a>";
309 $skel .= " / follow: <a\nhref=\"../t.atom\">Atom feed</a>)\n";
310 $ctx->{-upfx} = '../../';
311 $ctx->{cur_level} = 0;
312 $ctx->{dst} = \$skel;
313 $ctx->{prev_attr} = '';
314 $ctx->{prev_level} = 0;
315 $ctx->{root_anchor} = anchor_for($mid);
317 $ctx->{mapping} = {};
319 my $th = thread_results($msgs);
320 walk_thread($th, $ctx, *pre_thread);
322 return stream_thread($th, $ctx) unless $ctx->{flat};
324 # flat display: lazy load the full message from mini_mime:
325 my $inbox = $ctx->{-inbox};
327 while ($mime = shift @$msgs) {
328 $mime = $inbox->msg_by_mid(mid_clean(mid_mime($mime))) and last;
330 return missing_thread($ctx) unless $mime;
331 $mime = Email::MIME->new($mime);
332 $ctx->{-title_html} = ascii_html($mime->header('Subject'));
333 $ctx->{-html_tip} = '<pre>'.index_entry($mime, $ctx, scalar @$msgs);
335 my $body = PublicInbox::WwwStream->new($ctx, sub {
337 while ($mime = shift @$msgs) {
338 $mid = mid_clean(mid_mime($mime));
339 $mime = $inbox->msg_by_mid($mid) and last;
342 $mime = Email::MIME->new($mime);
343 return index_entry($mime, $ctx, scalar @$msgs);
348 [ 200, ['Content-Type', 'text/html; charset=UTF-8'], $body ];
351 sub multipart_text_as_html {
352 my ($mime, $upfx) = @_;
355 # scan through all parts, looking for displayable text
356 msg_iter($mime, sub {
358 $rv .= add_text_body($upfx, $p);
364 my ($s, $l, $quot) = @_;
366 # show everything in the full version with anchor from
367 # short version (see above)
368 my $rv = $l->linkify_1(join('', @$quot));
371 # we use a <span> here to allow users to specify their own
372 # color for quoted text
373 $rv = $l->linkify_2(ascii_html($rv));
374 $$s .= qq(<span\nclass="q">) . $rv . '</span>'
377 sub attach_link ($$$$) {
378 my ($upfx, $ct, $p, $fn) = @_;
379 my ($part, $depth, @idx) = @$p;
380 my $nl = $idx[-1] > 1 ? "\n" : '';
381 my $idx = join('.', @idx);
382 my $size = bytes::length($part->body);
383 $ct ||= 'text/plain';
384 $ct =~ s/;.*//; # no attributes
385 $ct = ascii_html($ct);
386 my $desc = $part->header('Content-Description');
387 $desc = $fn unless defined $desc;
388 $desc = '' unless defined $desc;
390 if (defined $fn && $fn =~ /\A[[:alnum:]][\w\.-]+[[:alnum:]]\z/) {
392 } elsif ($ct eq 'text/plain') {
397 my @ret = qq($nl<a\nhref="$upfx$idx-$sfn">[-- Attachment #$idx: );
398 my $ts = "Type: $ct, Size: $size bytes";
399 push(@ret, ($desc eq '') ? "$ts --]" : "$desc --]\n[-- $ts --]");
400 join('', @ret, "</a>\n");
404 my ($upfx, $p) = @_; # from msg_iter: [ Email::MIME, depth, @idx ]
405 my ($part, $depth, @idx) = @$p;
406 my $ct = $part->content_type;
407 my $fn = $part->filename;
409 if (defined $ct && $ct =~ m!\btext/x?html\b!i) {
410 return attach_link($upfx, $ct, $p, $fn);
413 my $s = eval { $part->body_str };
415 # badly-encoded message? tell the world about it!
416 return attach_link($upfx, $ct, $p, $fn) if $@;
418 my @lines = split(/^/m, $s);
420 if (defined($fn) || $depth > 0) {
421 $s .= attach_link($upfx, $ct, $p, $fn);
425 my $l = PublicInbox::Linkify->new;
426 while (defined(my $cur = shift @lines)) {
428 # show the previously buffered quote inline
429 flush_quote(\$s, $l, \@quot) if @quot;
432 $cur = $l->linkify_1($cur);
433 $cur = ascii_html($cur);
434 $s .= $l->linkify_2($cur);
443 flush_quote(\$s, $l, \@quot);
445 $s =~ s/[ \t]+$//sgm; # kill per-line trailing whitespace
446 $s =~ s/\A\n+//s; # kill leading blank lines
447 $s =~ s/\s+\z//s; # kill all trailing spaces
451 sub _msg_html_prepare {
452 my ($hdr, $ctx) = @_;
453 my $srch = $ctx->{srch} if $ctx;
455 my $rv = "<pre\nid=b>"; # anchor for body start
458 $ctx->{-upfx} = '../';
461 my $mid = $hdr->header_raw('Message-ID');
462 $mid = PublicInbox::Hval->new_msgid($mid);
463 foreach my $h (qw(From To Cc Subject Date)) {
464 my $v = $hdr->header($h);
465 defined($v) && ($v ne '') or next;
466 $v = PublicInbox::Hval->new($v);
469 my @n = PublicInbox::Address::names($v->raw);
470 $title[1] = ascii_html(join(', ', @n));
471 } elsif ($h eq 'Subject') {
472 $title[0] = $v->as_html;
474 $rv .= qq($h: <a\nhref="#r"\nid=t>);
475 $rv .= $v->as_html . "</a>\n";
480 $v =~ s/(\@[^,]+,) /$1\n\t/g if ($h eq 'Cc' || $h eq 'To');
484 $title[0] ||= '(no subject)';
485 $ctx->{-title_html} = join(' - ', @title);
486 $rv .= 'Message-ID: <' . $mid->as_html . '> ';
487 $rv .= "(<a\nhref=\"raw\">raw</a>)\n";
488 $rv .= _parent_headers($hdr, $srch);
493 my ($dst, $ctx, $hdr, $tpfx) = @_;
494 my $srch = $ctx->{srch};
495 my $mid = mid_clean($hdr->header_raw('Message-ID'));
496 my $sres = $srch->get_thread($mid);
497 my $nr = $sres->{total};
498 my $expand = qq(<a\nhref="${tpfx}t/#u">expand</a> ) .
499 qq(/ <a\nhref="${tpfx}t.mbox.gz">mbox.gz</a> ) .
500 qq(/ <a\nhref="${tpfx}t.atom">Atom feed</a>);
502 my $parent = in_reply_to($hdr);
504 if (defined $parent) {
505 $$dst .= "($expand)\n ";
506 $$dst .= ghost_parent("$tpfx../", $parent) . "\n";
508 $$dst .= "[no followups, yet] ($expand)\n";
510 $ctx->{next_msg} = undef;
511 $ctx->{parent_msg} = $parent;
515 $$dst .= "$nr+ messages in thread ($expand";
516 $$dst .= qq! / <a\nhref="#b">[top]</a>)\n!;
518 my $subj = $srch->subject_path($hdr->header('Subject'));
519 $ctx->{seen} = { $subj => 1 };
521 $ctx->{prev_attr} = '';
522 $ctx->{prev_level} = 0;
524 walk_thread(thread_results(load_results($sres)), $ctx, *skel_dump);
525 $ctx->{parent_msg} = $parent;
528 sub _parent_headers {
529 my ($hdr, $srch) = @_;
532 my $irt = in_reply_to($hdr);
534 my $v = PublicInbox::Hval->new_msgid($irt, 1);
535 my $html = $v->as_html;
536 my $href = $v->as_href;
537 $rv .= "In-Reply-To: <";
538 $rv .= "<a\nhref=\"../$href/\">$html</a>>\n";
541 # do not display References: if search is present,
542 # we show the thread skeleton at the bottom, instead.
545 my $refs = $hdr->header_raw('References');
547 # avoid redundant URLs wasting bandwidth
549 $seen{$irt} = 1 if defined $irt;
551 my @raw_refs = ($refs =~ /<([^>]+)>/g);
552 foreach my $ref (@raw_refs) {
555 push @refs, linkify_ref_nosrch($ref);
559 $rv .= 'References: '. join("\n\t", @refs) . "\n";
565 sub squote_maybe ($) {
567 if ($val =~ m{([^\w@\./,\%\+\-])}) {
568 $val =~ s/(['!])/'\\$1'/g; # '!' for csh
574 sub mailto_arg_link {
576 my %cc; # everyone else
577 my $to; # this is the From address
579 foreach my $h (qw(From To Cc)) {
580 my $v = $hdr->header($h);
581 defined($v) && ($v ne '') or next;
582 my @addrs = PublicInbox::Address::emails($v);
583 foreach my $address (@addrs) {
584 my $dst = lc($address);
585 $cc{$dst} ||= $address;
591 my $subj = $hdr->header('Subject') || '';
592 $subj = "Re: $subj" unless $subj =~ /\bRe:/i;
593 my $mid = $hdr->header_raw('Message-ID');
594 push @arg, '--in-reply-to='.ascii_html(squote_maybe(mid_clean($mid)));
595 my $irt = uri_escape_utf8($mid);
597 push @arg, '--to=' . ascii_html($to);
598 $to = uri_escape_utf8($to);
599 $subj = uri_escape_utf8($subj);
600 my $cc = join(',', sort values %cc);
601 push @arg, '--cc=' . ascii_html($cc);
602 $cc = uri_escape_utf8($cc);
603 my $href = "mailto:$to?In-Reply-To=$irt&Cc=${cc}&Subject=$subj";
606 (\@arg, ascii_html($href));
610 my ($hdr, $standalone, $ctx, $rhref) = @_;
612 my $srch = $ctx->{srch} if $ctx;
615 my $idx = $standalone ? " <a\nhref=\"$upfx\">index</a>" : '';
619 thread_skel(\$idx, $ctx, $hdr, $tpfx);
620 my $p = $ctx->{parent_msg};
621 my $next = $ctx->{next_msg};
623 $p = PublicInbox::Hval->new_msgid($p);
625 $irt = "<a\nhref=\"$upfx$p/\"\nrel=prev>parent</a> ";
627 $irt = ' ' x length('parent ');
630 my $n = PublicInbox::Hval->new_msgid($next)->as_href;
631 $irt .= "<a\nhref=\"$upfx$n/\"\nrel=next>next</a> ";
633 $irt .= ' ' x length('next ');
639 $irt .= qq(<a\nhref="$rhref">reply</a>);
643 sub linkify_ref_nosrch {
644 my $v = PublicInbox::Hval->new_msgid($_[0], 1);
645 my $html = $v->as_html;
646 my $href = $v->as_href;
647 "<<a\nhref=\"../$href/\">$html</a>>";
652 'm' . id_compress($msgid, 1);
656 my ($upfx, $mid) = @_;
657 # 'subject dummy' is used internally by Mail::Thread
658 return '[no common parent]' if ($mid eq 'subject dummy');
660 $mid = PublicInbox::Hval->new_msgid($mid);
661 my $href = $mid->as_href;
662 my $html = $mid->as_html;
663 qq{[parent not found: <<a\nhref="$upfx$href/">$html</a>>]};
668 INDENT x ($level - 1);
674 [ map { $_->mini_mime } @{delete $sres->{msgs}} ];
679 my $ts = eval { str2time($hdr->header('Date')) };
680 defined($ts) ? $ts : 0;
685 require PublicInbox::Thread;
686 my $th = PublicInbox::Thread->new(@$msgs);
688 $th->order(*sort_ts);
694 require PublicInbox::ExtMsg;
695 PublicInbox::ExtMsg::ext_msg($ctx);
700 my $ts = $hdr->header('X-PI-TS') || msg_timestamp($hdr);
704 sub fmt_ts { POSIX::strftime('%Y-%m-%d %k:%M', gmtime($_[0])) }
707 my ($ctx, $hdr, $level) = @_;
709 my $dst = $ctx->{dst};
710 my $cur = $ctx->{cur};
711 my $mid = mid_clean($hdr->header_raw('Message-ID'));
712 my $f = ascii_html($hdr->header('X-PI-From'));
713 my $d = _msg_date($hdr) . ' ' . indent_for($level) . th_pfx($level);
715 $ctx->{first_level} ||= $level;
717 if ($attr ne $ctx->{prev_attr} || $ctx->{prev_level} > $level) {
718 $ctx->{prev_attr} = $attr;
722 $ctx->{prev_level} = $level;
728 $$dst .= "<b><a\nid=r\nhref=\"#t\">".
729 "$attr [this message]</a></b>\n";
733 $ctx->{next_msg} ||= $mid;
736 # Subject is never undef, this mail was loaded from
737 # our Xapian which would've resulted in '' if it were
738 # really missing (and Filter rejects empty subjects)
739 my $s = $hdr->header('Subject');
740 my $h = $ctx->{srch}->subject_path($s);
741 if ($ctx->{seen}->{$h}) {
744 $ctx->{seen}->{$h} = 1;
745 $s = PublicInbox::Hval->new($s);
748 my $m = PublicInbox::Hval->new_msgid($mid);
750 my $mapping = $ctx->{mapping};
751 my $end = defined($s) ? "$s</a> $f\n" : "$f</a>\n";
753 my $map = $mapping->{$mid};
754 $id = id_compress($mid, 1);
756 $map->[1] = "$d<a\nhref=\"$m\">$end";
759 $m = $ctx->{-upfx}.$m->as_href.'/';
761 $$dst .= $d . "<a\nhref=\"$m\"$id>" . $end;
765 my ($ctx, $level, $node) = @_;
766 if (my $mime = $node->message) {
767 _skel_header($ctx, $mime->header_obj, $level);
769 my $mid = $node->messageid;
770 my $dst = $ctx->{dst};
771 my $mapping = $ctx->{mapping};
772 my $map = $mapping->{$mid} if $mapping;
773 if ($mid eq 'subject dummy') {
774 my $ncp = "\t[no common parent]\n";
775 $map->[1] = $ncp if $map;
779 my $d = $ctx->{pct} ? ' [irrelevant] ' # search result
781 $d .= indent_for($level) . th_pfx($level);
782 my $upfx = $ctx->{-upfx};
783 my $m = PublicInbox::Hval->new_msgid($mid);
784 my $href = $upfx . $m->as_href . '/';
785 my $html = $m->as_html;
788 my $id = id_compress($mid, 1);
789 $map->[1] = $d . qq{<<a\nhref=#r$id>$html</a>>\n};
790 $d .= qq{<<a\nhref="$href"\nid=r$id>$html</a>>\n};
792 $d .= qq{<<a\nhref="$href">$html</a>>\n};
800 (eval { $a->topmost->message->header('X-PI-TS') } || 0) <=>
801 (eval { $b->topmost->message->header('X-PI-TS') } || 0)
805 sub _tryload_ghost ($$) {
806 my ($srch, $mid) = @_;
807 my $smsg = $srch->lookup_mail($mid) or return;
811 # accumulate recent topics if search is supported
812 # returns 1 if done, undef if not
814 my ($ctx, $level, $node) = @_;
815 my $srch = $ctx->{srch};
816 my $mid = $node->messageid;
817 my $x = $node->message || _tryload_ghost($srch, $mid);
821 $subj = $x->header('Subject');
822 $subj = $srch->subject_normalized($subj);
823 $ts = $x->header('X-PI-TS');
824 } else { # ghost message, do not bump level
828 if (++$ctx->{subjs}->{$subj} == 1) {
829 push @{$ctx->{order}}, [ $level, $subj ];
831 my $exist = $ctx->{latest}->{$subj};
832 if (!$exist || $exist->[1] < $ts) {
833 $ctx->{latest}->{$subj} = [ $mid, $ts ];
839 my $order = $ctx->{order};
840 my $subjs = $ctx->{subjs};
841 my $latest = $ctx->{latest};
843 return $fh->write("\n[No topics in range]</pre>") unless scalar @$order;
849 while (defined(my $info = shift @$order)) {
850 my ($level, $subj) = @$info;
851 my $n = delete $subjs->{$subj};
852 my ($mid, $ts) = @{delete $latest->{$subj}};
853 $mid = PublicInbox::Hval->new_msgid($mid)->as_href;
854 $pfx = indent_for($level);
855 my $nl = $level == $prev ? "\n" : '';
860 $cur ||= [ $ts, '' ];
861 $cur->[0] = $ts if $ts > $cur->[0];
862 $cur->[1] .= $nl . $pfx . th_pfx($level);
863 if ($ts == -666) { # ghost
864 $cur->[1] .= ghost_parent('', $mid) . "\n";
865 next; # child will have mbox / atom link
868 $subj = PublicInbox::Hval->new($subj)->as_html;
869 $cur->[1] .= "<a\nhref=\"$mid/t/#u\"><b>$subj</b></a>\n";
871 my $attr = " $ts UTC";
873 # $n isn't the total number of posts on the topic,
874 # just the number of posts in the current results window
875 $n = $n == 1 ? '' : " ($n+ messages)";
877 if ($level == 0 || $attr ne $prev_attr) {
878 my $mbox = qq(<a\nhref="$mid/t.mbox.gz">mbox.gz</a>);
879 my $atom = qq(<a\nhref="$mid/t.atom">Atom</a>);
880 $pfx .= INDENT if $level > 0;
881 $cur->[1] .= $pfx . $attr . $n . " - $mbox / $atom\n";
885 push @recent, $cur if $cur;
886 @recent = map { $_->[1] } sort { $b->[0] <=> $a->[0] } @recent;
887 $fh->write(join('', @recent) . '</pre>');
890 sub emit_index_topics {
892 my ($off) = (($ctx->{cgi}->param('o') || '0') =~ /(\d+)/);
897 my %opts = ( offset => $off, limit => $max * 4 );
898 while (scalar @{$ctx->{order}} < $max) {
899 my $sres = $ctx->{srch}->query('', \%opts);
900 my $nr = scalar @{$sres->{msgs}} or last;
901 $sres = load_results($sres);
902 walk_thread(thread_results($sres), $ctx, *add_topic);
903 $opts{offset} += $nr;
910 sub thread_adj_level {
911 my ($ctx, $level) = @_;
913 my $max = $ctx->{cur_level};
915 return ('', '') if $max == 0; # flat output
917 # reset existing lists
918 my $beg = $max > 1 ? ('</ul></li>' x ($max - 1)) : '';
919 $ctx->{cur_level} = 0;
921 } elsif ($level == $max) { # continue existing list
923 } elsif ($level < $max) {
924 my $beg = $max > 1 ? ('</ul></li>' x ($max - $level)) : '';
925 $ctx->{cur_level} = $level;
926 ("$beg<li>", '</li>');
927 } else { # ($level > $max) # start a new level
928 $ctx->{cur_level} = $level;
929 my $beg = ($max ? '<li>' : '') . '<ul><li>';
934 sub ghost_index_entry {
935 my ($ctx, $level, $mid) = @_;
936 my ($beg, $end) = thread_adj_level($ctx, $level);
937 $beg . '<pre>'. ghost_parent($ctx->{-upfx}, $mid) . '</pre>' . $end;