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package Encode::Tcl;
BEGIN {
if (ord("A") == 193) {
die "Encode::Tcl not supported on EBCDIC\n";
}
}
use strict;
our $VERSION = do { my @r = (q$Revision: 0.90 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
use Encode qw(find_encoding);
use base 'Encode::Encoding';
use Carp;
sub INC_search
{
foreach my $dir (@INC)
{
if (opendir(my $dh,"$dir/Encode"))
{
while (defined(my $name = readdir($dh)))
{
if ($name =~ /^(.*)\.enc$/)
{
my $canon = $1;
my $obj = find_encoding($canon, 1); # skip external tables
if (!defined($obj))
{
my $obj = bless { Name => $canon, File => "$dir/Encode/$name"},__PACKAGE__;
$obj->Define( $canon );
# warn "$canon => $obj\n";
}
}
}
closedir($dh);
}
}
}
sub import
{
INC_search();
}
sub no_map_in_encode ($$)
# codepoint, enc-name;
{
carp sprintf "\"\\N{U+%x}\" does not map to %s", @_;
# /* FIXME: Skip over the character, copy in replacement and continue
# * but that is messy so for now just fail.
# */
return;
}
sub no_map_in_decode ($$)
# enc-name, string beginning the malform char;
{
# /* UTF-8 is supposed to be "Universal" so should not happen */
croak sprintf "%s '%s' does not map to UTF-8", @_;
}
sub encode
{
my $obj = shift;
my $new = $obj->loadEncoding;
return undef unless (defined $new);
return $new->encode(@_);
}
sub new_sequence
{
my $obj = shift;
my $new = $obj->loadEncoding;
return undef unless (defined $new);
return $new->new_sequence(@_);
}
sub decode
{
my $obj = shift;
my $new = $obj->loadEncoding;
return undef unless (defined $new);
return $new->decode(@_);
}
sub loadEncoding
{
my $obj = shift;
my $file = $obj->{'File'};
my $name = $obj->name;
if (open(my $fh,$file))
{
my $type;
while (1)
{
my $line = <$fh>;
$type = substr($line,0,1);
last unless $type eq '#';
}
my $subclass =
($type eq 'X') ? 'Extended' :
($type eq 'E') ? 'Escape' : 'Table';
my $class = ref($obj) . '::' . $subclass;
# carp "Loading $file";
bless $obj,$class;
return $obj if $obj->read($fh,$obj->name,$type);
}
else
{
croak("Cannot open $file for ".$obj->name);
}
$obj->Undefine($name);
return undef;
}
sub INC_find
{
my ($class,$name) = @_;
my $enc;
foreach my $dir (@INC)
{
last if ($enc = $class->loadEncoding($name,"$dir/Encode/$name.enc"));
}
return $enc;
}
require Encode::Tcl::Table;
require Encode::Tcl::Escape;
require Encode::Tcl::Extended;
1;
__END__
=head1 NAME
Encode::Tcl - Tcl encodings
=head1 SYNOPSIS
use Encode;
use Encode::Tcl;
$unicode = decode('shiftjis', $shiftjis);
$shiftjis = encode('shiftjis', $unicode);
=head1 DESCRIPTION
This module provides the interface to encodings
defined by the format of encoding tables borrowed from Tcl
and not compiled in other Encode:: modules.
See also F<Encode/EncodeFormat.pod> and F<Encode/*.enc> files.
To find how to use this module in detail, see L<Encode>.
=head1 SEE ALSO
L<Encode>
L<Encode::Tcl::Table>
L<Encode::Tcl::Escape>
L<Encode::Tcl::Extended>
=cut
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