NAME
Net::UPCDatabase - Simple OO interface to UPCDatabase.com
SYNOPSIS
use Net::UPCDatabase;
my $upcdb = Net::UPCDatabase->new;
print "\n[lookup]\n";
my $upc = '035000764119';
my $item = $upcdb->lookup($upc);
print "UPC: $item->{upc}\n";
if ($item->{error}) {
print "Error: $item->{error}\n";
}
else {
print "Product: $item->{description}\n";
print "Size: $item->{size}\n";
}
print "\n[convertUpcE]\n";
my $upcE = '01212901';
my $upcA = $upcdb->convertUpcE($upcE);
print "UPCE: $upcA->{upcE}\n";
if ($upcA->{error}) {
print "Error: $upcA->{error}\n";
}
else {
print "UPCA: $upcA->{upc}\n";
}
print "\n[calculateCheckDigit]\n";
my $upcC = '01200000129C';
my $upcA = $upcdb->calculateCheckDigit($upcE);
print "UPCC: $upcA->{upcC}\n";
if ($upcA->{error}) {
print "Error: $upcA->{error}\n";
}
else {
print "UPCA: $upcA->{upc}\n";
}DESCRIPTION
Connects to UPCDatabase.com to get information about a given UPC.
FUNCTIONS
new
$upcObject = Net::UPCDatabase->new;
# .. or ..
$upcObject = Net::UPCDatabase->new( url => $aDifferentUrlThanDefault );Accepts an OPTIONAL argument, a URL to use instead of the default. Unless you're really sure what you're doing, don't give it a URL. It defaults to 'http://www.upcdatabase.com/rpc', which is probably the right thing.
Returns the object.
lookup
$itemInfo = $upcObject->lookup($upc);
# example usage
my $ean = '0012000000133'; # pepsi 12oz can
print "EAN: $ean\n";
my $item = $upcdb->lookup($ean);
die "LOOKUP-ERROR: $item->{error}\n" if $item->{error};
print Dumper($item);Accepts a REQUIRED argument, the UPC to lookup. The UPC can be UPC-E (8 digits), UPC-A (12 digits), or EAN (13 digits).
Returns the data about the given UPC in a hash reference.
On error, it returns the given error reason as $itemInfo->{error}.
convertUpcE
$ean = $upcObject->convertUpcE($upcE);
die "ERROR: $ean->{error}\n" if $ean->{error};
print "EAN: $ean->{ean}\n";
# example usage
my $upce = '01201701'; # pepsi 24 pack
print "UPCE: $upce\n";
$ean = $upcdb->convertUpcE($upce);
die "EAN-ERROR: $ean->{error}\n" if $ean->{error};
print "EAN: $ean->{ean}\n";
$item = $upcdb->lookup($ean->{ean});
die "LOOKUP-ERROR: $item->{error}\n" if $item->{error};
print Dumper($item);Accepts a REQUIRED argument, the UPC-E to convert.
Returns the EAN (exactly 13 digits).
On error, it returns the given error reason as $itemInfo->{error}.
calculateCheckDigit
$ean = '001200000C2X1'; # bad (more than one digit being calculated)
$ean = '001200000C29C'; # bad (more than one digit being calculated)
$ean = '001200000129C'; # good (only one digit)
$ean = '00120000012C1'; # good (only one digit)
$ean = $upcObject->calculateCheckDigit($ean);
die "ERROR: $ean->{error}\n" if $ean->{error};
print "EAN: $ean->{ean}\n";Accepts a REQUIRED argument, the UPC-A or EAN with checkdigit placeholder (C or X) to calculate. This function will calculate the missing digit for any position, not just the last position. This only works if only one digit being calculated. This doesn't work with UPC-E. There is no difference between using "X" or "C" as the placeholder.
Returns the EAN with the checkdigit properly calculated.
On error, it returns the given error reason as $itemInfo->{error}.
NOTE: This uses an internal function, not the function on UPCDatabase.com because it appears that it is currently not implemented on the UPCDatabase.com side of things. If it is implemented to the same extent on UPCDatabase.com, it is a simple change to use it instead.
_calculateCheckDigit
The internal function that calculates the check digit. You won't want to use this yourself.
DEPENDENCIES
Frontier::Client Frontier::RPC2
TODO
- UPC checksum checking/creation
-
Clean up calculation of odd-position checkdigit calculation. It currently uses an inefficient brute-force method of calculation for that position. Even-position and checksum position calculation is pretty efficient. OEOEOEOEOEOX (O=odd, E=even, X=checksum) It's not *really* that wasteful, just not as efficient as it could be.
BUGS
Report bugs on the CPAN bug tracker. Please, do complain if something is broken.
SEE ALSO
COPYRIGHT AND LICENSE
Copyright 2005-2009 by Dusty Wilson
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.