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.
Inspired by the EAN gem by Pascal Belloncle (nano RAILS)
* —
'731346000101'.ean? ==> false '731346000101'.upc? ==> true
‘731346000101’.to_ean ==> ‘0731346000101’ ‘731346000101’.to_gtin ==> ‘000731346000101’
‘0731346000101’.valid_checksum? ==> true ‘0731346000105’.valid_checksum? ==> false Also adds .odd? and .even? to the Integer class
none
sudo gem install gtin
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