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package String::Multibyte::GB18030; |
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use vars qw($VERSION); |
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$VERSION = '1.02'; |
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+{ |
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charset => 'GB18030', |
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regexp => '(?:[\x00-\x80]|[\x81-\xFE][\x40-\x7E\x80-\xFE]|' |
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. '[\x81-\xFE][\x30-\x39][\x81-\xFE][\x30-\x39])', |
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cmpchar => sub { |
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length($_[0]) <=> length($_[1]) || $_[0] cmp $_[1]; |
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}, |
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nextchar => sub { |
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my $ch = shift; |
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my $len = length $ch; |
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if ($len == 1) { |
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return $ch eq "\x80" |
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? "\x81\x40" |
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: chr(ord($ch)+1); |
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} |
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elsif ($len == 2) { |
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my($c, $d) = unpack('CC', $ch); |
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return $ch eq "\xFE\xFE" |
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? "\x81\x30\x81\x30" |
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: $d == 0xFE |
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? chr($c+1)."\x40" |
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: $d == 0x7E |
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? chr($c) ."\x80" |
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: pack('CC', $c, $d+1); |
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} |
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elsif ($len == 4) { |
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my($c, $d, $e, $f) = unpack('CCCC', $ch); |
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return $f == 0x39 |
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? $e == 0xFE |
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? $d == 0x39 |
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? $c == 0xFE |
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? undef |
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: pack('CCCC', $c+1, 0x30, 0x81, 0x30) |
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: pack('CCCC', $c, $d+1, 0x81, 0x30) |
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: pack('CCCC', $c, $d, $e+1, 0x30) |
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: pack('CCCC', $c, $d, $e, $f+1); |
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} |
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else { |
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return; |
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} |
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}, |
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}; |
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__END__ |