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-rw-r--r--lib/PublicInbox/View.pm285
1 files changed, 237 insertions, 48 deletions
diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index 6e4d1789..47082431 100644
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -3,17 +3,21 @@
 package PublicInbox::View;
 use strict;
 use warnings;
-use PublicInbox::Hval;
 use URI::Escape qw/uri_escape_utf8/;
+use Date::Parse qw/str2time/;
 use Encode qw/find_encoding/;
 use Encode::MIME::Header;
 use Email::MIME::ContentType qw/parse_content_type/;
+use PublicInbox::Hval;
+use PublicInbox::MID qw/mid_clean mid_compressed mid2path/;
+use Digest::SHA;
 require POSIX;
 
 # TODO: make these constants tunable
 use constant MAX_INLINE_QUOTED => 12; # half an 80x24 terminal
 use constant MAX_TRUNC_LEN => 72;
 use constant PRE_WRAP => "<pre\nstyle=\"white-space:pre-wrap\">";
+use constant T_ANCHOR => '#u';
 
 *ascii_html = *PublicInbox::Hval::ascii_html;
 
@@ -21,16 +25,16 @@ my $enc_utf8 = find_encoding('UTF-8');
 
 # public functions:
 sub msg_html {
-        my ($class, $mime, $full_pfx, $footer) = @_;
+        my ($class, $mime, $full_pfx, $footer, $srch) = @_;
         if (defined $footer) {
                 $footer = "\n" . $footer;
         } else {
                 $footer = '';
         }
-        headers_to_html_header($mime, $full_pfx) .
+        headers_to_html_header($mime, $full_pfx, $srch) .
                 multipart_text_as_html($mime, $full_pfx) .
                 '</pre><hr />' . PRE_WRAP .
-                html_footer($mime, 1) . $footer .
+                html_footer($mime, 1, $full_pfx, $srch) . $footer .
                 '</pre></body></html>';
 }
 
@@ -41,9 +45,10 @@ sub feed_entry {
 }
 
 # this is already inside a <pre>
+# state = [ time, seen = {}, first_commit, page_nr = 0 ]
 sub index_entry {
-        my ($class, $mime, $level, $state) = @_;
-        my ($now, $seen, $first) = @$state;
+        my (undef, $mime, $level, $state) = @_;
+        my (undef, $seen, $first_commit) = @$state;
         my $midx = $state->[3]++;
         my ($prev, $next) = ($midx - 1, $midx + 1);
         my $rv = '';
@@ -65,8 +70,17 @@ sub index_entry {
         $from = PublicInbox::Hval->new_oneline($from)->as_html;
         $subj = PublicInbox::Hval->new_oneline($subj)->as_html;
         my $pfx = ('  ' x $level);
+        my $root_anchor = $seen->{root_anchor};
+        my $path;
+        my $more = 'permalink';
+        if ($root_anchor) {
+                $path = '../';
+                $subj = "<u\nid=\"u\">$subj</u>" if $root_anchor eq $id;
+        } else {
+                $path = '';
+        }
 
-        my $ts = $mime->header('X-PI-Date');
+        my $ts = $mime->header('X-PI-TS');
         my $fmt = '%Y-%m-%d %H:%M UTC';
         $ts = POSIX::strftime($fmt, gmtime($ts));
 
@@ -78,16 +92,18 @@ sub index_entry {
         }
         $rv .= "\n\n";
 
-        my $irp = $header_obj->header_raw('In-Reply-To');
-        my ($anchor_idx, $anchor);
-        if (defined $irp) {
-                $anchor_idx = anchor_for($irp);
+        my $irt = $header_obj->header_raw('In-Reply-To');
+        my ($anchor_idx, $anchor, $t_anchor);
+        if (defined $irt) {
+                $anchor_idx = anchor_for($irt);
                 $anchor = $seen->{$anchor_idx};
+                $t_anchor = T_ANCHOR;
+        } else {
+                $t_anchor = '';
         }
         my $href = $mid->as_href;
-        my $mhref = "m/$href.html";
-        my $fhref = "f/$href.html";
-        my $more = 'message';
+        my $mhref = "${path}m/$href.html";
+        my $fhref = "${path}f/$href.html";
         # scan through all parts, looking for displayable text
         $mime->walk_parts(sub {
                 $rv .= index_walk($_[0], $pfx, $enc_msg, $part_nr, $fhref,
@@ -96,24 +112,67 @@ sub index_entry {
         });
 
         $rv .= "\n$pfx<a\nhref=\"$mhref\">$more</a> ";
-        my $txt = "m/$href.txt";
+        my $txt = "${path}m/$href.txt";
         $rv .= "<a\nhref=\"$txt\">raw</a> ";
         $rv .= html_footer($mime, 0);
 
-        if (defined $irp) {
+        if (defined $irt) {
                 unless (defined $anchor) {
-                        my $v = PublicInbox::Hval->new_msgid($irp);
-                        my $html = $v->as_html;
-                        $anchor = 'm/' . $v->as_href . '.html';
+                        my $v = PublicInbox::Hval->new_msgid($irt);
+                        $v = $v->as_href;
+                        $anchor = "${path}m/$v.html";
                         $seen->{$anchor_idx} = $anchor;
                 }
                 $rv .= " <a\nhref=\"$anchor\">parent</a>";
         }
-        $rv .= " <a\nhref=\"?r=$first#$id\">threadlink</a>";
+
+        if ($first_commit) {
+                $rv .= " <a\nhref=\"t/$href.html$t_anchor\">thread</a>";
+        }
 
         $rv . "\n\n";
 }
 
+sub thread_html {
+        my (undef, $ctx, $foot, $srch) = @_;
+        my $mid = mid_compressed($ctx->{mid});
+        my $res = $srch->get_thread($mid);
+        my $rv = '';
+        my $msgs = load_results($ctx, $res);
+        my $nr = scalar @$msgs;
+        return $rv if $nr == 0;
+        require PublicInbox::Thread;
+        my $th = PublicInbox::Thread->new(@$msgs);
+        $th->thread;
+        $th->order(*PublicInbox::Thread::sort_ts);
+        my $state = [ undef, { root_anchor => anchor_for($mid) }, undef, 0 ];
+        thread_entry(\$rv, $state, $_, 0) for $th->rootset;
+        my $final_anchor = $state->[3];
+        my $next = "<a\nid=\"s$final_anchor\">end of thread</a>\n";
+
+        $rv .= "</pre><hr />" . PRE_WRAP . $next . $foot . "</pre>";
+}
+
+sub subject_path_html {
+        my (undef, $ctx, $foot, $srch) = @_;
+        my $path = $ctx->{subject_path};
+        my $res = $srch->get_subject_path($path);
+        my $rv = '';
+        my $msgs = load_results($ctx, $res);
+        my $nr = scalar @$msgs;
+        return $rv if $nr == 0;
+        require PublicInbox::Thread;
+        my $th = PublicInbox::Thread->new(@$msgs);
+        $th->thread;
+        $th->order(*PublicInbox::Thread::sort_ts);
+        my $state = [ undef, { root_anchor => 'dummy' }, undef, 0 ];
+        thread_entry(\$rv, $state, $_, 0) for $th->rootset;
+        my $final_anchor = $state->[3];
+        my $next = "<a\nid=\"s$final_anchor\">end of thread</a>\n";
+
+        $rv .= "</pre><hr />" . PRE_WRAP . $next . $foot . "</pre>";
+}
+
 # only private functions below.
 
 sub index_walk {
@@ -173,7 +232,7 @@ sub enc_for {
 }
 
 sub multipart_text_as_html {
-        my ($mime, $full_pfx) = @_;
+        my ($mime, $full_pfx, $srch) = @_;
         my $rv = "";
         my $part_nr = 0;
         my $enc_msg = enc_for($mime->header("Content-Type"));
@@ -277,7 +336,7 @@ sub add_text_body_full {
 }
 
 sub headers_to_html_header {
-        my ($mime, $full_pfx) = @_;
+        my ($mime, $full_pfx, $srch) = @_;
 
         my $rv = "";
         my @title;
@@ -285,33 +344,34 @@ sub headers_to_html_header {
                 my $v = $mime->header($h);
                 defined($v) && length($v) or next;
                 $v = PublicInbox::Hval->new_oneline($v);
-                $rv .= "$h: " . $v->as_html . "\n";
 
                 if ($h eq 'From') {
                         my @from = Email::Address->parse($v->raw);
-                        $v = $from[0]->name;
-                        unless (defined($v) && length($v)) {
-                                $v = '<' . $from[0]->address . '>';
-                        }
-                        $title[1] = ascii_html($v);
+                        $title[1] = ascii_html($from[0]->name);
                 } elsif ($h eq 'Subject') {
                         $title[0] = $v->as_html;
+                        if ($srch) {
+                                my $path = $srch->subject_path($v->raw);
+                                $rv .= "$h: <a\nhref=\"../s/$path.html\">";
+                                $rv .= $v->as_html . "</a>\n";
+                                next;
+                        }
                 }
+                $rv .= "$h: " . $v->as_html . "\n";
+
         }
 
         my $header_obj = $mime->header_obj;
         my $mid = $header_obj->header_raw('Message-ID');
-        if (defined $mid) {
-                $mid = PublicInbox::Hval->new_msgid($mid);
-                $rv .= 'Message-ID: &lt;' . $mid->as_html . '&gt; ';
-                my $href = $mid->as_href;
-                $href = "../m/$href" unless $full_pfx;
-                $rv .= "(<a\nhref=\"$href.txt\">raw</a>)\n";
-        }
+        $mid = PublicInbox::Hval->new_msgid($mid);
+        $rv .= 'Message-ID: &lt;' . $mid->as_html . '&gt; ';
+        my $href = $mid->as_href;
+        $href = "../m/$href" unless $full_pfx;
+        $rv .= "(<a\nhref=\"$href.txt\">raw</a>)\n";
 
-        my $irp = $header_obj->header_raw('In-Reply-To');
-        if (defined $irp) {
-                my $v = PublicInbox::Hval->new_msgid($irp);
+        my $irt = $header_obj->header_raw('In-Reply-To');
+        if (defined $irt) {
+                my $v = PublicInbox::Hval->new_msgid($irt);
                 my $html = $v->as_html;
                 my $href = $v->as_href;
                 $rv .= "In-Reply-To: &lt;";
@@ -320,7 +380,7 @@ sub headers_to_html_header {
 
         my $refs = $header_obj->header_raw('References');
         if ($refs) {
-                $refs =~ s/\s*\Q$irp\E\s*// if (defined $irp);
+                $refs =~ s/\s*\Q$irt\E\s*// if (defined $irt);
                 my @refs = ($refs =~ /<([^>]+)>/g);
                 if (@refs) {
                         $rv .= 'References: '. linkify_refs(@refs) . "\n";
@@ -334,7 +394,7 @@ sub headers_to_html_header {
 }
 
 sub html_footer {
-        my ($mime, $standalone) = @_;
+        my ($mime, $standalone, $full_pfx, $srch) = @_;
         my %cc; # everyone else
         my $to; # this is the From address
 
@@ -353,18 +413,41 @@ sub html_footer {
 
         my $subj = $mime->header('Subject') || '';
         $subj = "Re: $subj" unless $subj =~ /\bRe:/;
-        my $irp = uri_escape_utf8(
-                        $mime->header_obj->header_raw('Message-ID') || '');
+        my $mid = $mime->header_obj->header_raw('Message-ID');
+        my $irt = uri_escape_utf8($mid);
         delete $cc{$to};
         $to = uri_escape_utf8($to);
         $subj = uri_escape_utf8($subj);
 
         my $cc = uri_escape_utf8(join(',', sort values %cc));
-        my $href = "mailto:$to?In-Reply-To=$irp&Cc=${cc}&Subject=$subj";
+        my $href = "mailto:$to?In-Reply-To=$irt&Cc=${cc}&Subject=$subj";
 
         my $idx = $standalone ? " <a\nhref=\"../\">index</a>" : '';
+        if ($idx && $srch) {
+                $irt = $mime->header_obj->header_raw('In-Reply-To') || '';
+                $mid = mid_compressed(mid_clean($mid));
+                my $t_anchor = length $irt ? T_ANCHOR : '';
+                $idx = " <a\nhref=\"../t/$mid.html$t_anchor\">thread</a>$idx";
+                my $res = $srch->get_replies($mid);
+                if (my $c = $res->{count}) {
+                        $c = $c == 1 ? '1 reply' : "$c replies";
+                        $idx .= "\n$c:\n";
+                        thread_replies(\$idx, $mime, $res);
+                } else {
+                        $idx .= "\n(no replies yet)\n";
+                }
+                if ($irt) {
+                        $irt = PublicInbox::Hval->new_msgid($irt);
+                        $irt = $irt->as_href;
+                        $irt = "<a\nhref=\"$irt\">parent</a> ";
+                } else {
+                        $irt = ' ' x length('parent ');
+                }
+        } else {
+                $irt = '';
+        }
 
-        "<a\nhref=\"" . ascii_html($href) . '">reply</a>' . $idx;
+        "$irt<a\nhref=\"" . ascii_html($href) . '">reply</a>' . $idx;
 }
 
 sub linkify_refs {
@@ -376,12 +459,118 @@ sub linkify_refs {
         } @_);
 }
 
-require Digest::SHA;
 sub anchor_for {
         my ($msgid) = @_;
-        $msgid =~ s/\A\s*<?//;
-        $msgid =~ s/>?\s*\z//;
-        'm' . Digest::SHA::sha1_hex($msgid);
+        'm' . mid_compressed(mid_clean($msgid));
+}
+
+sub simple_dump {
+        my ($dst, $root, $node, $level) = @_;
+        my $pfx = '  ' x $level;
+        $$dst .= $pfx;
+        if (my $x = $node->message) {
+                my $mid = $x->header('Message-ID');
+                if ($root->[0] ne $mid) {
+                        my $s = $x->header('Subject');
+                        my $h = hash_subj($s);
+                        if ($root->[1]->{$h}) {
+                                $s = '';
+                        } else {
+                                $root->[1]->{$h} = 1;
+                                $s = PublicInbox::Hval->new($s);
+                                $s = $s->as_html;
+                        }
+                        my $m = PublicInbox::Hval->new_msgid($mid);
+                        my $f = PublicInbox::Hval->new($x->header('X-PI-From'));
+                        my $d = PublicInbox::Hval->new($x->header('X-PI-Date'));
+                        $m = $m->as_href . '.html';
+                        $f = $f->as_html;
+                        $d = $d->as_html . ' UTC';
+                        if (length($s) == 0) {
+                                $$dst .= "` <a\nhref=\"$m\">$f @ $d</a>\n";
+                        } else {
+                                $$dst .= "` <a\nhref=\"$m\">$s</a>\n" .
+                                     "$pfx  by $f @ $d\n";
+                        }
+                }
+        }
+        simple_dump($dst, $root, $node->child, $level + 1) if $node->child;
+        simple_dump($dst, $root, $node->next, $level) if $node->next;
+}
+
+sub hash_subj {
+        my ($subj) = @_;
+        $subj =~ s/\A\s+//;
+        $subj =~ s/\s+\z//;
+        $subj =~ s/^(?:re|aw):\s*//i; # remove reply prefix (aw: German)
+        $subj =~ s/\s+/ /;
+        Digest::SHA::sha1($subj);
+}
+
+sub thread_replies {
+        my ($dst, $root, $res) = @_;
+        my @msgs = map { $_->mini_mime } @{$res->{msgs}};
+        foreach (@{$res->{msgs}}) {
+                print STDERR "smsg->path: <", $_->path, ">\n";
+        }
+        require PublicInbox::Thread;
+        $root->header_set('X-PI-TS', '0');
+        my $th = PublicInbox::Thread->new($root, @msgs);
+        $th->thread;
+        $th->order(*PublicInbox::Thread::sort_ts);
+        $root = [ $root->header('Message-ID'),
+                  { hash_subj($root->header('Subject')) => 1 } ];
+        simple_dump($dst, $root, $_, 0) for $th->rootset;
+}
+
+sub thread_html_head {
+        my ($mime) = @_;
+        my $s = PublicInbox::Hval->new_oneline($mime->header('Subject'));
+        $s = $s->as_html;
+        "<html><head><title>$s</title></head><body>" . PRE_WRAP
+
+}
+
+sub thread_entry {
+        my ($dst, $state, $node, $level) = @_;
+        # $state = [ $search_res, $seen, undef, 0 (msg_nr) ];
+        # $seen is overloaded with 3 types of fields:
+        #        1) "root_anchor" => anchor_for(Message-ID),
+        #        2) seen subject hashes: sha1(subject) => 1
+        #        3) anchors hashes: "#$sha1_hex" (same as $seen in index_entry)
+        if (my $mime = $node->message) {
+                if (length($$dst) == 0) {
+                        $$dst .= thread_html_head($mime);
+                }
+                $$dst .= index_entry(undef, $mime, $level, $state);
+        }
+        thread_entry($dst, $state, $node->child, $level + 1) if $node->child;
+        thread_entry($dst, $state, $node->next, $level) if $node->next;
+}
+
+sub load_results {
+        my ($ctx, $res) = @_;
+
+        require PublicInbox::GitCatFile;
+        my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
+        my @msgs;
+        while (my $smsg = shift @{$res->{msgs}}) {
+                my $m = $smsg->mid;
+                my $path = mid2path($m);
+
+                # FIXME: duplicated code from Feed.pm
+                my $mime = eval {
+                        my $str = $git->cat_file("HEAD:$path");
+                        Email::MIME->new($str);
+                };
+                unless ($@) {
+                        my $t = eval { str2time($mime->header('Date')) };
+                        defined($t) or $t = 0;
+                        $mime->header_set('X-PI-TS', $t);
+                        push @msgs, $mime;
+                }
+        }
+        \@msgs;
 }
 
 1;