This gem can be used to validate that a file conforms to the Keep a Changelog standard. It does this by defining a Keep a Changelog grammar and using the treetop parsing DSL to parse a changelog file according to that grammar.

Add parse_a_changelog to your Gemfile and bundle install or install it directly with:

gem install parse_a_changelog

The gem includes a binary that can be run with the changelog file as its single argument:

parse path/to/changelog

Or you can use the gem directly in your Ruby code:

result = ParseAChangelog::parse("path/to/changelog")

Finally, here is an example bash script that runs parse-a-changelog on the current directory in a Docker container, which can be useful for including changelog validation in a CI pipeline:

#!/bin/bash -ex

docker run \
  --rm \
  --volume "${PWD}/CHANGELOG.md":/CHANGELOG.md \
  cyberark/parse-a-changelog

We welcome contributions of all kinds to parse-a-changelog. See our contributing guide.

Make sure you have the rspec gem installed in your current gem set then run the tests like so:

$ rspec
..................

Finished in 0.02494 seconds (files took 0.21634 seconds to load)
18 examples, 0 failures

1. Create a branch
2. Determine the appropriate version using semver and update the VERSION file.
3. Move the contents of the Unreleased section in CHANGELOG.md into a new section using the current release version and date.
4. Update the links at the bottom of CHANGELOG.md.
5. Commit these changes with a commit message about bumping the version.
6. Run git tag <release-version> && git push origin --tags
7. Create a PR to have the release approved and merged.
8. Build the gem: gem build parse_a_changelog.gemspec
9. Push the gem: gem push parse_a_changelog-<release-version>.gem (this may require setting up publishing credentials)

The parse-a-changelog gem is licensed under Apache License 2.0 - see LICENSE for more details.