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Diffstat (limited to 'Master/tlpkg/tlperl/lib/Encode/Unicode/UTF7.pm')
| -rw-r--r-- | Master/tlpkg/tlperl/lib/Encode/Unicode/UTF7.pm | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/Master/tlpkg/tlperl/lib/Encode/Unicode/UTF7.pm b/Master/tlpkg/tlperl/lib/Encode/Unicode/UTF7.pm deleted file mode 100644 index dc75ce37816..00000000000 --- a/Master/tlpkg/tlperl/lib/Encode/Unicode/UTF7.pm +++ /dev/null @@ -1,118 +0,0 @@ -# -# $Id: UTF7.pm,v 2.1 2004/05/25 16:27:14 dankogai Exp $ -# -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: 2.1 $ =~ /\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 - $specials .= quotemeta "!\"#$%&*;<=>@[]^_`{|}"; -# \s will not work because it matches U+3000 DEOGRAPHIC SPACE -# We use qr/[\n\r\t\ ] instead -my $re_asis = qr/(?:[\n\r\t\ A-Za-z0-9$specials])/; -my $re_encoded = qr/(?:[^\n\r\t\ A-Za-z0-9$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 $s = $1; - my $base64 = encode_base64($e_utf16->encode($s), ''); - $base64 =~ s/=+$//; - $bytes .= "+$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 -- UTF-7 encoding - -=head1 SYNOPSIS - - use Encode qw/encode decode/; - $utf7 = encode("UTF-7", $utf8); - $utf8 = decode("UTF-7", $ucs2); - -=head1 ABSTRACT - -This module implements UTF-7 encoding documented in RFC 2152. UTF-7, -as its name suggests, is a 7-bit re-encoded version of UTF-16BE. It -is designed to be MTA-safe and expected to be a standard way to -exchange Unicoded mails via mails. But with the advent of UTF-8 and -8-bit compliant MTAs, UTF-7 is hardly ever used. - -UTF-7 was not supported by Encode until version 1.95 because of that. -But Unicode::String, a module by Gisle Aas which adds Unicode supports -to non-utf8-savvy perl did support UTF-7, the UTF-7 support was added -so Encode can supersede Unicode::String 100%. - -=head1 In Practice - -When you want to encode Unicode for mails and web pages, however, do -not use UTF-7 unless you are sure your recipients and readers can -handle it. Very few MUAs and WWW Browsers support these days (only -Mozilla seems to support one). For general cases, use UTF-8 for -message body and MIME-Header for header instead. - -=head1 SEE ALSO - -L<Encode>, L<Encode::Unicode>, L<Unicode::String> - -RFC 2781 L<http://www.ietf.org/rfc/rfc2152.txt> - -=cut |