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wakaba |
1.1 |
require 5.7.3;
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package Encode::Unicode::UTF7;
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use strict;
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use vars qw(%OPTION $VERSION);
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$VERSION=do{my @r=(q$Revision: 1.1 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
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use base qw(Encode::Encoding);
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require MIME::Base64;
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wakaba |
1.2 |
__PACKAGE__->Define (qw/utf-7 utf7 unicode-2-0-utf-7 unicode-2-0-utf7 x-unicode-2-0-utf7 cp65000 unicode-1-1-utf-7 csunicode11utf7/);
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wakaba |
1.1 |
## BUG: Unicode-1-1-UTF-7 is actually not suitable. (We need Unicode 1.1 support.)
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$OPTION{encode_o_set} = 1;
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sub encode ($$;$) {
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my ($obj, $str, $chk) = @_;
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my $encode_reg = qr#[^\x09\x0A\x0D\x20A-Za-z0-9'(),-./:?]#;
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$encode_reg = qr~[^\x09\x0A\x0D\x20A-Za-z0-9'(),-./:?!"#\$%&*;<=>@\[\]^_`{|}]~
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unless $OPTION{encode_o_set};
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$str =~ s{ ((?:$encode_reg)+) }{
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my $s = $1;
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unless ($s eq '+') {
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$s = MIME::Base64::encode_base64 (Encode::encode ('UTF-16BE', $s));
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$s =~ tr/=\x0A\x0D/A/d;
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} else {
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$s = '';
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}
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'+'.$s.'-';
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}goex;
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Encode::_utf8_off ($str);
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$_[1] = '' if $chk;
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return $str;
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}
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sub decode ($$;$) {
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my ($obj, $str, $chk) = @_;
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$str =~ s{\+([A-Za-z0-9+/]*)([^A-Za-z0-9+/]|$)}{
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my ($b, $d) = ($1, $2);
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if (length $b) {
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$b .= '=' x (4 - (length ($b) % 4));
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$b =~ s/====$//; $b =~ s/AA$/==/; $b =~ s/A$/=/;
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$b = Encode::decode ('UTF-16BE', MIME::Base64::decode_base64 ($b));
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} else {
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$b = '+';
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}
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$d = '' if $d eq '-';
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$b.$d;
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}goex;
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Encode::_utf8_on ($str);
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$_[1] = '' if $chk;
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return $str;
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}
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package Encode::Unicode::UTF7::IMAP;
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use vars qw($VERSION);
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$VERSION = $Encode::Unicode::UTF7::VERSION;
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use base qw(Encode::Encoding);
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#require MIME::Base64;
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__PACKAGE__->Define (qw/utf7-imap utf-7-imap utf-7-for-imap x-imap4-modified-utf7/);
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sub encode ($$;$) {
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my ($obj, $str, $chk) = @_;
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$str =~ s{ ([^\x20-\x25\x27-\x7E]+) }{
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my $s = $1;
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unless ($s eq '&') {
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$s = MIME::Base64::encode_base64 (Encode::encode ('UTF-16BE', $s));
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$s =~ tr#/=\x0A\x0D#,A#d;
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} else {
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$s = '';
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}
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'&'.$s.'-';
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}goex;
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Encode::_utf8_off ($str);
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$_[1] = '' if $chk;
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return $str;
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}
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sub decode ($$;$) {
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my ($obj, $str, $chk) = @_;
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$str =~ s{&([A-Za-z0-9+,]*)-}{
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my $b = $1;
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if (length $b) {
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$b .= '=' x (4 - (length ($b) % 4));
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$b =~ s/====$//; $b =~ s/AA$/==/; $b =~ s/A$/=/;
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$b =~ tr#,#/#;
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$b = Encode::decode ('UTF-16BE', MIME::Base64::decode_base64 ($b));
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} else {
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$b = '&';
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}
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$b;
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}goex;
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Encode::_utf8_on ($str);
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$_[1] = '' if $chk;
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return $str;
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}
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1;
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__END__
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=head1 NAME
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Encode::Unicode::UTF7 --- Encode/decode of UTF-7 and IMAP4 modified UTF-7
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=head1 EXAMPLE
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use Encode;
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my $s = "some string in utf-8 (to be converted to utf-\x{4E03})";
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print encode ('utf-7', $s); # ... utf-+TgMA-
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print encode ('utf7-imap', $s); # ... utf-&TgMA-
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my $b = q(A+ImIDkQ. +ZeVnLIqe-);
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print decode ('utf-7', $b); # A<!=><Alpha> <ni><hon><go>
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=head1 LICENSE
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Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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=cut
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wakaba |
1.2 |
## $Date: 2002/08/16 12:09:21 $
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wakaba |
1.1 |
### UTF7.pm ends here
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