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1 package Encode::KR::2022_KR; 2 use strict; 3 use warnings; 4 our $VERSION = do { my @r = ( q$Revision: 2.2 $ =~ /\d+/g ); sprintf "%d." . "%02d" x $#r, @r }; 5 6 use Encode qw(:fallbacks); 7 8 use base qw(Encode::Encoding); 9 __PACKAGE__->Define('iso-2022-kr'); 10 11 sub needs_lines { 1 } 12 13 sub perlio_ok { 14 return 0; # for the time being 15 } 16 17 sub decode { 18 my ( $obj, $str, $chk ) = @_; 19 my $res = $str; 20 my $residue = iso_euc( \$res ); 21 22 # This is for PerlIO 23 $_[1] = $residue if $chk; 24 return Encode::decode( 'euc-kr', $res, FB_PERLQQ ); 25 } 26 27 sub encode { 28 my ( $obj, $utf8, $chk ) = @_; 29 30 # empty the input string in the stack so perlio is ok 31 $_[1] = '' if $chk; 32 my $octet = Encode::encode( 'euc-kr', $utf8, FB_PERLQQ ); 33 euc_iso( \$octet ); 34 return $octet; 35 } 36 37 use Encode::CJKConstants qw(:all); 38 39 # ISO<->EUC 40 41 sub iso_euc { 42 my $r_str = shift; 43 $$r_str =~ s/$RE{'2022_KR'}//gox; # remove the designator 44 $$r_str =~ s{ # replace characters in GL 45 \x0e # between SO(\x0e) and SI(\x0f) 46 ([^\x0f]*) # with characters in GR 47 \x0f 48 } 49 { 50 my $out= $1; 51 $out =~ tr/\x21-\x7e/\xa1-\xfe/; 52 $out; 53 }geox; 54 my ($residue) = ( $$r_str =~ s/(\e.*)$//so ); 55 return $residue; 56 } 57 58 sub euc_iso { 59 no warnings qw(uninitialized); 60 my $r_str = shift; 61 substr( $$r_str, 0, 0 ) = 62 $ESC{'2022_KR'}; # put the designator at the beg. 63 $$r_str =~ 64 s{ # move KS X 1001 characters in GR to GL 65 ($RE{EUC_C}+) # and enclose them with SO and SI 66 }{ 67 my $str = $1; 68 $str =~ tr/\xA1-\xFE/\x21-\x7E/; 69 "\x0e" . $str . "\x0f"; 70 }geox; 71 $$r_str; 72 } 73 74 1; 75 __END__ 76 77 =head1 NAME 78 79 Encode::KR::2022_KR -- internally used by Encode::KR 80 81 =cut
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