Lisbn

Lisbn (pronounced "Lisbon") is a wrapper around String that adds methods for manipulating ISBNs.

Add this line to your application's Gemfile:

gem 'lisbn'

And then execute:

$ bundle

Or install it yourself as:

$ gem install lisbn

Instantiate a new Lisbn object:

> isbn = Lisbn.new("9780000000002")

You can check its validity:

> isbn.valid?
 => true

You can convert it to ISBN-10 or ISBN-13:

> isbn.isbn10
 => "0000000000"

> isbn.isbn13
 => "9780000000002"

And you can break it up into its GS1 prefix, group identifier, prefix/publisher code, item number and check digit:

> isbn.parts
 => ["978", "0", "00", "000000", "2"]

You can update the ISBN ranges by replacing the RangeMessage.xml file with an updated copy from: https://www.isbn-international.org/range_file_generation

Then run:

> rake save_ranges_to_yaml

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

1. Update the version in lisbn.gemspec using semver.
2. Tag the version update commit as vX.X.X on the master branch.
3. Push to github.