lib/Encode/Table.pm


=head1 NAME

Encode::Table --- Inter-coding-space table convertion

=cut

package Encode::Table;
use strict;
use vars qw(%TABLE $VERSION);
$VERSION = do {my @r =(q$Revision: 1.3 $ =~ /\d+/g);sprintf "%d."."%02d" x $#r, @r};

## Builtin tables
for (0x00..0x7F) {
  my $c = chr $_;
  $TABLE{ascii_to_ucs}->{$c} = $c;
  $TABLE{ucs_to_ascii}->{$c} = $c;
}
$Encode::Table::ascii::VERSION = $VERSION;
for (0xA0..0xFF) {
  my $c = chr $_;
  $TABLE{isoiec8859_1_to_ucs}->{$c} = $c;
  $TABLE{ucs_to_isoiec8859_1}->{$c} = $c;
}
$Encode::Table::isoiec8859_1::VERSION = $VERSION;

my %_Cache;
sub convert ($@%) {
  return $_[0] unless @{$_[1]} > 0;
  my @s = split //, shift;
  my $tbl = shift;
  my $tbls = join ' ', @$tbl;
  my %option = @_;
  load_table (@$tbl) if $option{-autoload};
  for my $c (@s) {
    unless (defined $_Cache{$tbls}->{$c}) {
      for (@$tbl) {
        if (defined $TABLE{$_}->{$c}) {
          $_Cache{$tbls}->{$c} = $TABLE{$_}->{$c}; last;
        }
      }
      $_Cache{$tbls}->{$c} = $c unless defined $_Cache{$tbls}->{$c};    ## Not found
    }
    $c = $_Cache{$tbls}->{$c};
  }
  join '', @s;
}

sub load_table (@) {
  no strict 'refs';
  for (@_) {
    my $name = $_;
    if ($name =~ /^ucs_to_(.+)$/) { $name = $1 }
    elsif ($name =~ /^(.+)_to_ucs$/) { $name = $1 }
    unless (${ 'Encode::Table::' . $name . '::VERSION' }) {
      eval qq{require Encode::Table::$name; Encode::Table::$name->import; 1} or warn $@;
    }
  }
}

1;
__END__

=head1 AUTHORS

Nanashi-san

=head1 LICENSE

Copyright 2002 AUTHORS

This library is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.

=cut

# $Date: 2002/10/05 05:01:24 $
### $RCSfile: Table.pm,v $ ends here
1
2	=head1 NAME
3
4	Encode::Table --- Inter-coding-space table convertion
5
6	=cut
7
8	package Encode::Table;
9	use strict;
10	use vars qw(%TABLE $VERSION);
11	$VERSION = do {my @r =(q$Revision: 1.3 $ =~ /\d+/g);sprintf "%d."."%02d" x $#r, @r};
12
13	## Builtin tables
14	for (0x00..0x7F) {
15	my $c = chr $_;
16	$TABLE{ascii_to_ucs}->{$c} = $c;
17	$TABLE{ucs_to_ascii}->{$c} = $c;
18	}
19	$Encode::Table::ascii::VERSION = $VERSION;
20	for (0xA0..0xFF) {
21	my $c = chr $_;
22	$TABLE{isoiec8859_1_to_ucs}->{$c} = $c;
23	$TABLE{ucs_to_isoiec8859_1}->{$c} = $c;
24	}
25	$Encode::Table::isoiec8859_1::VERSION = $VERSION;
26
27	my %_Cache;
28	sub convert ($@%) {
29	return $_[0] unless @{$_[1]} > 0;
30	my @s = split //, shift;
31	my $tbl = shift;
32	my $tbls = join ' ', @$tbl;
33	my %option = @_;
34	load_table (@$tbl) if $option{-autoload};
35	for my $c (@s) {
36	unless (defined $_Cache{$tbls}->{$c}) {
37	for (@$tbl) {
38	if (defined $TABLE{$_}->{$c}) {
39	$_Cache{$tbls}->{$c} = $TABLE{$_}->{$c}; last;
40	}
41	}
42	$_Cache{$tbls}->{$c} = $c unless defined $_Cache{$tbls}->{$c}; ## Not found
43	}
44	$c = $_Cache{$tbls}->{$c};
45	}
46	join '', @s;
47	}
48
49	sub load_table (@) {
50	no strict 'refs';
51	for (@_) {
52	my $name = $_;
53	if ($name =~ /^ucs_to_(.+)$/) { $name = $1 }
54	elsif ($name =~ /^(.+)_to_ucs$/) { $name = $1 }
55	unless (${ 'Encode::Table::' . $name . '::VERSION' }) {
56	eval qq{require Encode::Table::$name; Encode::Table::$name->import; 1} or warn $@;
57	}
58	}
59	}
60
61	1;
62	__END__
63
64	=head1 AUTHORS
65
66	Nanashi-san
67
68	=head1 LICENSE
69
70	Copyright 2002 AUTHORS
71
72	This library is free software; you can redistribute it
73	and/or modify it under the same terms as Perl itself.
74
75	=cut
76
77	# $Date: 2002/10/05 05:01:24 $
78	### $RCSfile: Table.pm,v $ ends here