1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
package PDF::Builder::Resource::XObject::Form::BarCode::int2of5;
use base 'PDF::Builder::Resource::XObject::Form::BarCode';
use strict;
use warnings;
our $VERSION = '3.028'; # VERSION
our $LAST_UPDATE = '3.027'; # manually update whenever code is changed
=head1 NAME
PDF::Builder::Resource::XObject::Form::BarCode::int2of5 - Specific information for interleaved 2-of-5 bar codes
Inherits from L<PDF::Builder::Resource::XObject::Form::BarCode>
=head1 METHODS
=head2 new
PDF::Builder::Resource::XObject::Form::BarCode::int2of5->new()
=over
Create an Interleaved 2 of 5 bar code object. Note that it is invoked from the
Builder.pm level method!
=back
=cut
# Interleaved 2 of 5 Barcodes
# Pairs of digits are encoded; the first digit is represented by five
# bars, and the second digit is represented by five spaces interleaved
# with the bars.
sub new {
my ($class, $pdf, %options) = @_;
# copy dashed option names to preferred undashed names
if (defined $options{'-code'} && !defined $options{'code'}) { $options{'code'} = delete($options{'-code'}); }
my $self = $class->SUPER::new($pdf,%options);
my @bars = $self->encode($options{'code'});
$self->drawbar([@bars], $options{'caption'});
return $self;
}
my @bar25interleaved = qw(11221 21112 12112 22111 11212 21211 12211 11122 21121 12121);
sub encode {
my ($self, $string) = @_;
# Remove any character that isn't a digit
$string =~ s/[^0-9]//g;
# Prepend a 0 if there are an odd number of digits
$string = '0' . $string if length($string) % 2;
# Start Code
my @bars = ('aaaa');
# Encode pairs of digits
my ($c1, $c2, $s1, $s2, $pair);
while (length($string)) {
($c1, $c2, $string) = split(//, $string, 3);
$s1 = $bar25interleaved[$c1];
$s2 = $bar25interleaved[$c2];
$pair = '';
foreach my $i (0 .. 4) {
$pair .= substr($s1, $i, 1);
$pair .= substr($s2, $i, 1);
}
push @bars, [$pair, ($c1 . $c2)];
}
# Stop Code
push @bars, 'baaa';
return @bars;
}
1;
|
