GitHub Action: Run ktlint with reviewdog

This action runs ktlint with reviewdog on pull requests to enforce best practices.

Examples

With github-pr-check

By default, with reporter: github-pr-check an annotation is added to the line:

With github-pr-review

With reporter: github-pr-review a comment is added to the Pull Request Conversation:

Inputs

github_token

Required. Must be in form of github_token: ${{ secrets.github_token }}.

level

Optional. Report level for reviewdog [info,warning,error]. It's same as -level flag of reviewdog. The default is error.

reporter

Optional. Reporter of reviewdog command [github-pr-check,github-pr-review, github-check]. The default is github-pr-check.

See reviewdog reporters documentation for more details on their functionality.

filter_mode

Optional. Filtering for the reviewdog command [added,diff_context,file,nofilter]. The default is added.

See reviewdog filter mode documentation for more details.

fail_on_error

Optional. Exit code for reviewdog when errors are found [true,false] Default is false.

See reviewdog fail on error documentation for more details.

relative

Optional. Print files relative to the working directory [true/false] The default value is true.

android (deprecated)

Optional. Runs KtLint with Android Kotlin Style Guide [true/false] The default value is false.

Note: this field has no effect if ktlint_version is 1.0.1 or later. code-style command-line argument is deprecated in ktlint. Instead, ktlint_code_style property in .editorconfig needs to be used. Example:

[*.{kt,kts}]
ktlint_code_style = android_studio

More in https://pinterest.github.io/ktlint/latest/rules/code-styles/

baseline

Optional. Runs checks against the baseline file provided.

ktlint_version

Optional. Defines the ktlint version to use. The default value is latest.

name

Optional. Reviewdog report name. See checkstyle-format for details. The default value is ktlint.

file_glob

Optional. Defines a file glob to identify files to be checked. The default value is an empty string.

custom_rule_path

Optional. Provides path to JAR file with custom rules. The default value is an empty string.

Example usage

name: reviewdog
on: [pull_request]
jobs:
  ktlint:
    name: Check Code Quality
    runs-on: ubuntu-latest

    steps:
      - name: Clone repo
        uses: actions/checkout@master
        with:
          fetch-depth: 1
      - name: ktlint
        uses: ScaCap/action-ktlint@master
        with:
          github_token: ${{ secrets.github_token }}
          reporter: github-pr-review # Change reporter