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)
4 # represents a header value in various forms
5 package PublicInbox::Hval;
8 use fields qw(raw -as_utf8);
9 use Encode qw(find_encoding);
10 use CGI qw(escapeHTML);
11 use URI::Escape qw(uri_escape);
13 my $enc_utf8 = find_encoding('utf8');
14 my $enc_ascii = find_encoding('us-ascii');
15 my $enc_mime = find_encoding('MIME-Header');
18 my ($class, $raw) = @_;
19 my $self = fields::new($class);
21 # we never care about leading/trailing whitespace
29 my ($class, $raw) = @_;
36 my ($class, $raw) = @_;
37 $raw = '' unless defined $raw;
38 $raw =~ tr/\t\n / /s; # squeeze spaces
39 $raw =~ tr/\r//d; # kill CR
45 $self->{-as_utf8} ||= $enc_utf8->encode($self->{raw});
48 sub ascii_html { $enc_ascii->encode(escapeHTML($_[0]), Encode::HTMLCREF) }
50 sub as_html { ascii_html($_[0]->as_utf8) }
51 sub as_href { ascii_html(uri_escape($_[0]->as_utf8)) }