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package PDF::Builder::Resource::XObject::Form::BarCode::int2of5; |
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use base 'PDF::Builder::Resource::XObject::Form::BarCode'; |
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use strict; |
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use warnings; |
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our $VERSION = '3.024'; # VERSION |
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our $LAST_UPDATE = '3.024'; # manually update whenever code is changed |
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=head1 NAME |
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PDF::Builder::Resource::XObject::Form::BarCode::int2of5 - specific information for int 2-of-5 bar codes. Inherits from L |
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=cut |
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# Interleaved 2 of 5 Barcodes |
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# Pairs of digits are encoded; the first digit is represented by five |
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# bars, and the second digit is represented by five spaces interleaved |
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# with the bars. |
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sub new { |
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my ($class, $pdf, %options) = @_; |
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# copy dashed option names to preferred undashed names |
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if (defined $options{'-code'} && !defined $options{'code'}) { $options{'code'} = delete($options{'-code'}); } |
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my $self = $class->SUPER::new($pdf,%options); |
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my @bars = $self->encode($options{'code'}); |
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$self->drawbar([@bars], $options{'caption'}); |
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return $self; |
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} |
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my @bar25interleaved = qw(11221 21112 12112 22111 11212 21211 12211 11122 21121 12121); |
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sub encode { |
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my ($self, $string) = @_; |
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# Remove any character that isn't a digit |
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$string =~ s/[^0-9]//g; |
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# Prepend a 0 if there are an odd number of digits |
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$string = '0' . $string if length($string) % 2; |
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# Start Code |
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my @bars = ('aaaa'); |
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# Encode pairs of digits |
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my ($c1, $c2, $s1, $s2, $pair); |
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while (length($string)) { |
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($c1, $c2, $string) = split(//, $string, 3); |
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$s1 = $bar25interleaved[$c1]; |
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$s2 = $bar25interleaved[$c2]; |
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$pair = ''; |
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foreach my $i (0 .. 4) { |
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$pair .= substr($s1, $i, 1); |
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$pair .= substr($s2, $i, 1); |
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} |
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push @bars, [$pair, ($c1 . $c2)]; |
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} |
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# Stop Code |
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push @bars, 'baaa'; |
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return @bars; |
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} |
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1; |