view: split out reply logic into its own module

[public-inbox.git] / lib / PublicInbox / Reply.pm

diff --git a/lib/PublicInbox/Reply.pm b/lib/PublicInbox/Reply.pm
new file mode 100644 (file)
index 0000000..73a4df1
--- /dev/null
+++ b/lib/PublicInbox/Reply.pm
@@ -0,0 +1,54 @@
+# Copyright (C) 2014-2017 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+package PublicInbox::Reply;
+use strict;
+use warnings;
+use URI::Escape qw/uri_escape_utf8/;
+use PublicInbox::Hval qw/ascii_html/;
+use PublicInbox::Address;
+use PublicInbox::MID qw/mid_clean mid_escape/;
+
+sub squote_maybe ($) {
+       my ($val) = @_;
+       if ($val =~ m{([^\w@\./,\%\+\-])}) {
+               $val =~ s/(['!])/'\\$1'/g; # '!' for csh
+               return "'$val'";
+       }
+       $val;
+}
+
+sub mailto_arg_link {
+       my ($hdr) = @_;
+       my %cc; # everyone else
+       my $to; # this is the From address
+
+       foreach my $h (qw(From To Cc)) {
+               my $v = $hdr->header($h);
+               defined($v) && ($v ne '') or next;
+               my @addrs = PublicInbox::Address::emails($v);
+               foreach my $address (@addrs) {
+                       my $dst = lc($address);
+                       $cc{$dst} ||= $address;
+                       $to ||= $dst;
+               }
+       }
+       my @arg;
+
+       my $subj = $hdr->header('Subject') || '';
+       $subj = "Re: $subj" unless $subj =~ /\bRe:/i;
+       my $mid = $hdr->header_raw('Message-ID');
+       push @arg, '--in-reply-to='.squote_maybe(mid_clean($mid));
+       my $irt = mid_escape($mid);
+       delete $cc{$to};
+       push @arg, "--to=$to";
+       $to = uri_escape_utf8($to);
+       $subj = uri_escape_utf8($subj);
+       my @cc = sort values %cc;
+       push(@arg, map { "--cc=$_" } @cc);
+       my $cc = uri_escape_utf8(join(',', @cc));
+       my $href = "mailto:$to?In-Reply-To=$irt&Cc=${cc}&Subject=$subj";
+
+       (\@arg, ascii_html($href));
+}
+
+1;