File Coverage

blib/lib/GD/Barcode/Code39.pm

Criterion	Covered	Total	%
statement	33	46	71.7
branch	2	8	25.0
condition			n/a
subroutine	8	9	88.8
pod	3	4	75.0
total	46	67	68.6

package GD::Barcode::Code39;
use strict;
use warnings;

use GD::Barcode;
use parent qw(Exporter);
use vars qw($VERSION @ISA $errStr);
@ISA     = qw(GD::Barcode Exporter);
our $VERSION = '2.00';
my $code39Bar = {
    '0' => '000110100',
    '1' => '100100001',
    '2' => '001100001',
    '3' => '101100000',
    '4' => '000110001',
    '5' => '100110000',
    '6' => '001110000',
    '7' => '000100101',
    '8' => '100100100',
    '9' => '001100100',
    'A' => '100001001',
    'B' => '001001001',
    'C' => '101001000',
    'D' => '000011001',
    'E' => '100011000',
    'F' => '001011000',
    'G' => '000001101',
    'H' => '100001100',
    'I' => '001001100',
    'J' => '000011100',
    'K' => '100000011',
    'L' => '001000011',
    'M' => '101000010',
    'N' => '000010011',
    'O' => '100010010',
    'P' => '001010010',
    'Q' => '000000111',
    'R' => '100000110',
    'S' => '001000110',
    'T' => '000010110',
    'U' => '110000001',
    'V' => '011000001',
    'W' => '111000000',
    'X' => '010010001',
    'Y' => '110010000',
    'Z' => '011010000',
    '-' => '010000101',
    '*' => '010010100',
    '+' => '010001010',
    '$' => '010101000',
    '%' => '000101010',
    '/' => '010100010',
    '.' => '110000100',
    ' ' => '011000100'
};

sub new {
    my ( $sClass, $sTxt ) = @_;
    $errStr = '';
    my $oThis = {};
    bless $oThis, $sClass;
    return if ( $errStr = $oThis->init($sTxt) );
    return $oThis;
}

sub init {
    my ( $oThis, $sTxt ) = @_;

    #Check
    return 'Invalid Characters' if ( $sTxt =~ /[^0-9A-Z\-*+\$%\/. ]/ );
    $oThis->{text} = $sTxt;
    return '';
}

sub barcode {
    my ($oThis) = @_;
    my ($sTxt);
    my ( $sWk, $sRes );

    $sTxt = $oThis->{text};
    $sRes = '';
    foreach my $sWk ( split( //, $sTxt ) ) {
        $sRes .= GD::Barcode::dumpCode( $code39Bar->{$sWk} . '0' );
    }
    return $sRes;
}

sub plot {
    my ( $oThis, %hParam ) = @_;

    #Barcode Pattern
    my $sTxtWk = $oThis->{text};
    my $sPtn   = $oThis->barcode();

    #Create Image
    my $iHeight = ( $hParam{Height} ) ? $hParam{Height} : 50;
    my ( $oGd, $cBlack );
    if ( $hParam{NoText} ) {
        ( $oGd, $cBlack ) =
          GD::Barcode::plot( $sPtn, length($sPtn), $iHeight, 0, 0 );
    }
    else {
        require GD;
        my ( $fW, $fH ) = ( GD::Font->Small->width, GD::Font->Small->height );
        my $iWidth = length($sPtn);

        #Bar Image
        ( $oGd, $cBlack ) =
          GD::Barcode::plot( $sPtn, $iWidth, $iHeight, $fH, 0 );

        #String
        $oGd->string(
            GD::Font->Small,
            ( length($sPtn) - $fW * ( length($sTxtWk) ) ) / 2,
            $iHeight - $fH,
            $sTxtWk, $cBlack
        );
    }
    return $oGd;
}
1;
__END__