rake version:bump:patch in the age of bundler gemspecs

A great timesaver in jeweler is rake version:bump:xxx, it bumps the version and commits the result. After switching my project-template to bundler, I kind of missed it … so I made a standalone version 🙂

The Gist of it…

# extracted from https://github.com/grosser/project_template
rule /^version:bump:.*/ do |t|
  sh "git status | grep 'nothing to commit'" # ensure we are not dirty
  index = ['major', 'minor','patch'].index(t.name.split(':').last)
  file = 'lib/GEM_NAME/version.rb'

  version_file = File.read(file)
  old_version, *version_parts = version_file.match(/(\d+)\.(\d+)\.(\d+)/).to_a
  version_parts[index] = version_parts[index].to_i + 1
  version_parts[2] = 0 if index < 2
  version_parts[1] = 0 if index < 1
  new_version = version_parts * '.'
  File.open(file,'w'){|f| f.write(version_file.sub(old_version, new_version)) }

  sh "bundle && git add #{file} Gemfile.lock && git commit -m 'bump version to #{new_version}'"
end
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