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Ruby gem to handle basic GTIN/EAN/UPC verification.

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gtin

DESCRIPTION:

The GTIN gem provides very simple functionality for verifying checksums on EAN-13 and UPC-A barcode values. It also does very simple conversion between the two by left-padding with zeroes. This is not intended to be a complex gem, but is certainly functional for applications that require that barcode values be checked for valid checksums and length.

www.gtin.info/

Inspired by the EAN gem by Pascal Belloncle (nano RAILS)

FEATURES/PROBLEMS:

* —

SYNOPSIS:

	'731346000101'.ean?    ==> false
	'731346000101'.upc?    ==> true

‘731346000101’.to_ean ==> ‘0731346000101’ ‘731346000101’.to_gtin ==> ‘000731346000101’

‘0731346000101’.valid_gtin_checksum? ==> true ‘0731346000105’.valid_gtin_checksum? ==> false Also adds .odd? and .even? to the Integer class

REQUIREMENTS:

none

INSTALL:

sudo gem install gtin

LICENSE:

(The MIT License)

Copyright © 2010 Hans C. Masing & Sensible Geek, LLC

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ‘Software’), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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