On Saturday, May 17, 2003, at 12:23 AM, Dan Kogai wrote:
But before I commit the release I will definitely release a patch here
so "no one" like you can test it. So be my (alpha|beta) tester,
please.
Whole module right after my signature. Based upon Unicode::String
"some" body please fill in the POD section. Test suite is even more
welcome.
Dan the Encode Maintainer
#
# $Id: UTF7.pm,v 0.1 2003/05/16 18:06:24 dankogai Exp dankogai $
#
package Encode::Unicode::UTF7;
use strict;
no warnings 'redefine';
use base qw(Encode::Encoding);
__PACKAGE__->Define('UTF-7');
our $VERSION = do { my @r = (q$Revision: 0.1 $ =~ /\d+/g); sprintf
"%d."."%02d" x $#r, @r };
use MIME::Base64;
use Encode;
#
# Algorithms taken from Unicode::String by Gisle Aas
#
our $OPTIONAL_DIRECT_CHARS = 1;
my $specials = quotemeta "\'(),-.:?";
$OPTIONAL_DIRECT_CHARS and
$specials .= quotemeta "!\"#$%&*;<=>@[]^_`{|}";
my $re_asis = qr/(?:[\sA-Za-z0-9$specials])/;
my $re_encoded = qr/(?:[^\sA-Za-z0-9$specials])/;
my $e_utf16 = find_encoding("UTF-16BE");
sub needs_lines { 1 };
sub encode($$;$){
my ($obj, $str, $chk) = @_;
my $len = length($str);
pos($str) = 0;
my $bytes = '';
while (pos($str) < $len){
if ($str =~ /\G($re_asis+)/ogc){
$bytes .= $1;
}elsif($str =~ /\G($re_encoded+)/ogsc){
if ($1 eq "+"){
$bytes .= "+-";
}else{
my $base64 = encode_base64($e_utf16->encode($1), '');
$base64 =~ s/=+$//;
$bytes .= "+$base64-";
}
}else{
die "This should not happen! (pos=" . pos($str) . ")";
}
}
$_[1] = '' if $chk;
return $bytes;
}
sub decode{
my ($obj, $bytes, $chk) = @_;
my $len = length($bytes);
my $str = "";
while (pos($bytes) < $len) {
if ($bytes =~ /\G([^+]+)/ogc) {
$str .= $1;
}elsif($bytes =~ /\G\+-/ogc) {
$str .= "+";
}elsif($bytes =~ /\G\+([A-Za-z0-9+\/]+)-?/ogsc) {
my $base64 = $1;
my $pad = length($base64) % 4;
$base64 .= "=" x (4 - $pad) if $pad;
$str .= $e_utf16->decode(decode_base64($base64));
}elsif($bytes =~ /\G\+/ogc) {
$^W and warn "Bad UTF7 data escape";
$str .= "+";
}else{
die "This should not happen " . pos($bytes);
}
}
$_[1] = '' if $chk;
return $str;
}
1;
__END__
=head1 NAME
Encode::Unicode::UTF7 -- Someone please do the pod :) !
=cut
