Semvruler

Provides some utility classes to read, compare and match semantic versions.

Installation

Add this line to your application's Gemfile:

gem 'semvruler'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install semvruler

Usage

Creating versions

    # Creates and destructure version string
    version = Semvruler.version('2.2.5-pr.0')

    version.major # => 2 
    version.minor # => 2 
    version.patch # => 5
    version.build # => nil
    version.prerelease # => ['pr','0']

    # You can put back together the original string
    version.to_s # => '2.2.5-pr.0'

    # Returns an array when multiple versions passed
    versions = Semvruler.versions(['3.4.5', '2.2.5', '1.1.1', '1.1.1-pr.0'])

Comparable versions

Versions implement ruby's comparable interface and '~>' operator as well.

    versions = Semvruler.versions(['3.4.5', '2.2.5', '1.1.1', '1.1.1-pr.0'])
    versions.sort # => ["1.1.1-pr.0", "1.1.1", "2.2.5", "3.4.5"]

    ver1 = version[0]
    ver2 = version[1]

    ver1 != ver2 # => true
    ver1 == ver2 # => false
    ver1 > ver2 # => true
    ver1 >= ver2 # => true
    ver1 < ver2 # => false
    ver1 <= ver2 # => false

Rules instantiation

    rule = Semvruler.rule('~> 2.0.2')
    rule.to_s # => '~> 2.0.2'

    # Rules can be adjusted
    rule.add('< 10.0.1')
    rule.remove('< 10.0.1')
    rule.merge(rule2)

Rules Matching

    rule = Semvruler.rule('!= 2.0.2')
    rule.match?('2.0.2') # => false
    rule.match?('2.3.2') # => true

    # Rules respond to to_proc
    rule = Semvruler.rule('~> 2.0.2')
    ['3.2.1', '1.2.3', '2.1.1'].find(&rule) # => '2.1.1'
    ['3.2.1', '1.2.3', '2.1.1'].select(&rule) # => ['2.1.1']
    ['3.2.1', '1.2.3', '2.1.1'].reject(&rule) # => ['3.2.1', '1.2.3']

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/nika-kirosh/semvruler

License

The gem is available as open source under the terms of the MIT License.