1 # Copyright (C) 2014, Eric Wong <normalperson@yhbt.net> and all contributors
2 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
3 package PublicInbox::View;
7 use URI::Escape qw/uri_escape/;
8 use CGI qw/escapeHTML/;
9 use Encode qw/find_encoding/;
10 use Encode::MIME::Header;
11 use Email::MIME::ContentType qw/parse_content_type/;
12 use constant MAX_INLINE_QUOTED => 5;
13 use constant MAX_TRUNC_LEN => 72;
15 my $enc_utf8 = find_encoding('utf8');
16 my $enc_ascii = find_encoding('us-ascii');
17 my $enc_mime = find_encoding('MIME-Header');
21 my ($class, $mime, $full_pfx) = @_;
23 headers_to_html_header($mime, $full_pfx) .
24 multipart_text_as_html($mime, $full_pfx) .
25 '</pre></body></html>';
29 my ($class, $mime, $full_pfx) = @_;
31 "<pre>" . multipart_text_as_html($mime, $full_pfx) . "</pre>";
35 # only private functions below.
39 defined $ct or return $enc_utf8;
40 my $ct_parsed = parse_content_type($ct);
42 if (my $charset = $ct_parsed->{attributes}->{charset}) {
43 my $enc = find_encoding($charset);
50 sub multipart_text_as_html {
51 my ($mime, $full_pfx) = @_;
54 my $enc_msg = enc_for($mime->header("Content-Type"));
56 # scan through all parts, looking for displayable text
57 $mime->walk_parts(sub {
59 return if $part->subparts; # walk_parts already recurses
60 my $enc = enc_for($part->content_type) || $enc_msg || $enc_utf8;
63 my $fn = $part->filename;
64 defined($fn) or $fn = "part #" . ($part_nr + 1);
65 $rv .= add_filename_line($enc->decode($fn));
68 if (defined $full_pfx) {
69 $rv .= add_text_body_short($enc, $part, $part_nr,
72 $rv .= add_text_body_full($enc, $part, $part_nr);
74 $rv .= "\n" unless $rv =~ /\n\z/s;
80 sub add_filename_line {
86 $pad x= ($len/2) if ($len > 0);
87 "$pad " . ascii_html($fn) . " $pad\n";
90 sub add_text_body_short {
91 my ($enc, $part, $part_nr, $full_pfx) = @_;
93 my $s = ascii_html($enc->decode($part->body));
94 $s =~ s!^((?:(?:>[^\n]*)\n)+)!
96 my @lines = split(/\n/, $cur);
97 if (@lines > MAX_INLINE_QUOTED) {
98 # show a short snippet of quoted text
99 $cur = join(' ', @lines);
100 $cur =~ s/^>\s*//;
102 my @sum = split(/\s+/, $cur);
105 my $tmp = shift(@sum);
106 my $len = length($tmp) + length($cur);
107 if ($len > MAX_TRUNC_LEN) {
112 } while (@sum && length($cur) < MAX_TRUNC_LEN);
114 "> <<a href=\"${full_pfx}#q${part_nr}_" . $n++ .
115 "\">$cur<\/a>>\n";
123 sub add_text_body_full {
124 my ($enc, $part, $part_nr) = @_;
126 my $s = ascii_html($enc->decode($part->body));
127 $s =~ s!^((?:(?:>[^\n]*)\n)+)!
129 my @lines = split(/\n/, $cur);
130 if (@lines > MAX_INLINE_QUOTED) {
131 "<a name=q${part_nr}_" . $n++ . ">$cur</a>";
140 $enc_ascii->encode(escapeHTML($_[0]), Encode::HTMLCREF);
143 sub headers_to_html_header {
144 my ($simple, $full_pfx) = @_;
148 foreach my $h (qw(From To Cc Subject Date)) {
149 my $v = $simple->header($h);
153 my $raw = $enc_mime->decode($v);
154 $v = ascii_html($raw);
158 my @from = Email::Address->parse($raw);
159 $raw = $from[0]->name;
160 unless (defined($raw) && length($raw)) {
161 $raw = '<' . $from[0]->address . '>';
163 $title[1] = ascii_html($raw);
165 } elsif ($h eq 'Subject') {
170 my $mid = $simple->header('Message-ID');
172 $mid = PublicInbox::Hval->new_msgid($mid);
173 $rv .= 'Message-ID: <' . $mid->as_html . '> ';
174 my $href = $mid->as_href;
175 $href = "../m/$href" unless $full_pfx;
176 $rv .= "(<a href=\"$href.txt\">original</a>)\n";
179 my $irp = $simple->header('In-Reply-To');
181 $irp = PublicInbox::Hval->new_msgid($irp);
182 my $html = $irp->as_html;
183 my $href = $irp->as_href;
184 $rv .= "In-Reply-To: <";
185 $rv .= "<a href=\"$href.html\">$html</a>>\n";
189 ("<html><head><title>". join(' - ', @title) .
190 '</title></head><body><pre style="white-space:pre-wrap">' . $rv);