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package String::Mask; |
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195692
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use 5.006; use strict; use warnings; |
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use base 'Import::Export'; |
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1426
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our $VERSION = '0.02'; |
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our %EX = ( |
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mask => [qw/all/] |
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); |
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sub mask { |
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my ($string, $pos, $length, $mask_char) = @_; |
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$pos ||= 'start'; |
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$length ||= int(length($string) / 2); |
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if ($pos eq 'end') { |
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$string =~ s/(.*)(.{$length})$/_mask($1, $mask_char).$2/es; |
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} elsif ($pos eq 'middle') { |
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my $half = int((length($string) - $length) / 2); |
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$string =~ s/(.{$half})(.{$length})(.*)/_mask($1, $mask_char).$2._mask($3, $mask_char)/e; |
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} else { |
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$string =~ s/(\w{$length})(.*)/$1._mask($2, $mask_char)/e; |
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} |
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return $string; |
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} |
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sub _mask { |
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my ($string, $char) = @_; |
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$char ||= '*'; |
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$string =~ s/[^.@]/$char/g; |
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return $string; |
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} |
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1; |
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__END__ |