ci: add GitHub Actions workflows for linting

.editorconfig

@@ -1,3 +1,5 @@
+root = true
+
 [*]
 insert_final_newline = true
 end_of_line = lf

.github/workflows/lint.yml

@@ -0,0 +1,46 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
+name: lint
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "**.R"
+      - "**.Rmd"
+  pull_request:
+    branches:
+      - main
+    paths:
+      - "**.R"
+      - "**.Rmd"
+  workflow_dispatch:
+
+permissions: read-all
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::lintr, local::.
+          needs: lint
+
+      - name: Lint
+        run: lintr::lint_package()
+        shell: Rscript {0}
+        env:
+          LINTR_ERROR_ON_LINT: true

.github/workflows/mega-linter.yml

@@ -0,0 +1,87 @@
+---
+# MegaLinter GitHub Action configuration file
+# More info at https://megalinter.io
+name: MegaLinter
+
+on:
+  # Trigger mega-linter at every push. Action will also be visible from Pull Requests to main
+  push: # Comment this line to trigger action only on pull-requests (not recommended if you don't pay for GH Actions)
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+env: # Comment env block if you do not want to apply fixes
+  # Apply linter fixes configuration
+  APPLY_FIXES: all # When active, APPLY_FIXES must also be defined as environment variable (in github/workflows/mega-linter.yml or other CI tool)
+  APPLY_FIXES_EVENT: pull_request # Decide which event triggers application of fixes in a commit or a PR (pull_request, push, all)
+  APPLY_FIXES_MODE: commit # If APPLY_FIXES is used, defines if the fixes are directly committed (commit) or posted in a PR (pull_request)
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: MegaLinter
+    runs-on: ubuntu-latest
+    steps:
+      # Git Checkout
+      - name: Checkout Code
+        uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.PAT || secrets.GITHUB_TOKEN }}
+          fetch-depth: 0 # If you use VALIDATE_ALL_CODEBASE = true, you can remove this line to improve performances
+
+      # MegaLinter
+      - name: MegaLinter
+        id: ml
+        # You can override MegaLinter flavor used to have faster performances
+        # More info at https://megalinter.io/flavors/
+        uses: oxsecurity/megalinter/flavors/cupcake@v7
+        env:
+          # All available variables are described in documentation
+          # https://megalinter.io/configuration/
+          VALIDATE_ALL_CODEBASE: true
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # ADD YOUR CUSTOM ENV VARIABLES HERE OR DEFINE THEM IN A FILE .mega-linter.yml AT THE ROOT OF YOUR REPOSITORY
+          # DISABLE: COPYPASTE,SPELL # Uncomment to disable copy-paste and spell checks
+
+      # Upload MegaLinter artifacts
+      - name: Archive production artifacts
+        if: ${{ success() }} || ${{ failure() }}
+        uses: actions/upload-artifact@v3
+        with:
+          name: MegaLinter reports
+          path: |
+            megalinter-reports
+            mega-linter.log
+
+      # Create pull request if applicable (for now works only on PR from same repository, not from forks)
+      - name: Create Pull Request with applied fixes
+        id: cpr
+        if: steps.ml.outputs.has_updated_sources == 1 && (env.APPLY_FIXES_EVENT == 'all' || env.APPLY_FIXES_EVENT == github.event_name) && env.APPLY_FIXES_MODE == 'pull_request' && (github.event_name == 'push' || github.event.pull_request.head.repo.full_name == github.repository)
+        uses: peter-evans/create-pull-request@v4
+        with:
+          token: ${{ secrets.PAT || secrets.GITHUB_TOKEN }}
+          commit-message: "[MegaLinter] Apply linters automatic fixes"
+          title: "[MegaLinter] Apply linters automatic fixes"
+          labels: bot
+      - name: Create PR output
+        if: steps.ml.outputs.has_updated_sources == 1 && (env.APPLY_FIXES_EVENT == 'all' || env.APPLY_FIXES_EVENT == github.event_name) && env.APPLY_FIXES_MODE == 'pull_request' && (github.event_name == 'push' || github.event.pull_request.head.repo.full_name == github.repository)
+        run: |
+          echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"
+          echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"
+
+      # Push new commit if applicable (for now works only on PR from same repository, not from forks)
+      - name: Prepare commit
+        if: steps.ml.outputs.has_updated_sources == 1 && (env.APPLY_FIXES_EVENT == 'all' || env.APPLY_FIXES_EVENT == github.event_name) && env.APPLY_FIXES_MODE == 'commit' && github.ref != 'refs/heads/main' && (github.event_name == 'push' || github.event.pull_request.head.repo.full_name == github.repository)
+        run: sudo chown -Rc $UID .git/
+      - name: Commit and push applied linter fixes
+        if: steps.ml.outputs.has_updated_sources == 1 && (env.APPLY_FIXES_EVENT == 'all' || env.APPLY_FIXES_EVENT == github.event_name) && env.APPLY_FIXES_MODE == 'commit' && github.ref != 'refs/heads/main' && (github.event_name == 'push' || github.event.pull_request.head.repo.full_name == github.repository)
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          branch: ${{ github.event.pull_request.head.ref || github.head_ref || github.ref }}
+          commit_message: "[MegaLinter] Apply linters fixes"

.mega-linter.yml

@@ -0,0 +1,8 @@
+DISABLE:
+  - R
+DISABLE_LINTERS:
+  - SPELL_CSPELL
+C_CPPLINT_FILTER_REGEX_EXCLUDE: "src/entrypoint\\.c"
+RUST_CLIPPY_ARGUMENTS:
+  - --manifest-path src/rust/Cargo.toml
+LOG_LEVEL: DEBUG