lint_changed_files.yml

#/
# @license Apache-2.0
#
# Copyright (c) 2022 The Stdlib Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#/

# Workflow name:
name: lint_changed_files

# Workflow triggers:
on:
  push:
    branches:
      - develop
  pull_request:
    types:
      - opened
      - synchronize
      - reopened

# Workflow jobs:
jobs:

  # Define a job for linting committed code...
  process:

    # Define a display name:
    name: 'Lint Changed Files'

    # Define the type of virtual host machine:
    runs-on: ubuntu-latest

    # Define the sequence of job steps...
    steps:
      # Checkout the repository:
      - name: 'Checkout repository'
        # Pin action to full length commit SHA corresponding to v4.1.0
        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
        with:
          # Specify whether to remove untracked files before checking out the repository:
          clean: true

          # Limit clone depth to the last 1000 commits:
          fetch-depth: 1000

          # Specify whether to download Git-LFS files:
          lfs: false
        timeout-minutes: 10

      # Install Node.js:
      - name: 'Install Node.js'
        # Pin action to full length commit SHA corresponding to v3.8.1
        uses: actions/setup-node@5e21ff4d9bc1a8cf6de233a3057d20ec6b3fb69d
        with:
          node-version: '16' # 'lts/*'
        timeout-minutes: 5

      # Install dependencies (accounting for possible network failures, etc, when installing node module dependencies):
      - name: 'Install dependencies'
        run: |
          make install-node-modules || make install-node-modules || make install-node-modules
        timeout-minutes: 15

      # Initialize development environment:
      - name: 'Initialize development environment'
        run: |
          make init
        timeout-minutes: 5

      # Get list of changed files:
      - name: 'Get list of changed files'
        id: changed-files
        run: |
          if [ -n "${{ github.event.pull_request.number }}" ]; then
            # Get the list of changed files in pull request:
            ancestor_commit=$(git merge-base ${{ github.event.pull_request.base.sha }} ${{ github.event.pull_request.head.sha }})
            files=$(git diff --diff-filter=AM --name-only $ancestor_commit ${{ github.event.pull_request.head.sha }})
          else
            # Get changed files by comparing the current commit to the commit before the push event or with its parent:
            if [ "${{ github.event.before }}" == "0000000000000000000000000000000000000000" ]; then
              files=$(git diff --diff-filter=AM --name-only HEAD~ ${{ github.event.after }})
            else
              files=$(git diff --diff-filter=AM --name-only ${{ github.event.before }} ${{ github.event.after }})
            fi
          fi
          files=$(echo "$files" | tr '\n' ' ' | sed 's/ $//')
          echo "files=${files}" >> $GITHUB_OUTPUT

      # Lint file names
      - name: 'Lint file names'
        run: |
          # Determine root directory:
          root=$(git rev-parse --show-toplevel)

          # Define the path to a utility for linting filenames:
          lint_filenames="${root}/lib/node_modules/@stdlib/_tools/lint/filenames/bin/cli"

          # Lint filenames:
          echo "${{ steps.changed-files.outputs.files }}" || "${lint_filenames}"

      # Lint Markdown files:
      - name: 'Lint Markdown files'
        if: success() || failure()
        run: |
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep -E '\.md$' | tr '\n' ' ' | sed 's/ $//')
          if [ -n "${files}" ]; then
            make lint-markdown-files FILES="${files}"
          fi

      # Lint shell script files:
      - name: 'Lint shell script files'
        if: success() || failure()
        run: |
          files=$(echo "${{ steps.random-files.outputs.files }}" | tr ' ' '\n' | grep -vE '\.(js|md|json|ts|c|h)$' | while read -r file; do head -n1 "$file" | grep -q '^\#\!/usr/bin/env bash' && echo "$file"; done | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            # Install shellcheck:
            make install-deps-shellcheck

            # Lint shell scripts:
            make FILES="${files}" lint-shell-files
          fi

      # Lint package.json files:
      - name: 'Lint package.json files'
        if: success() || failure()
        run: |
          # Determine root directory:
          root=$(git rev-parse --show-toplevel)

          # Define the path to a utility for linting package.json files:
          lint_package_json="${root}/lib/node_modules/@stdlib/_tools/lint/pkg-json/bin/cli"

          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep 'package\.json$' | grep -v 'datapackage\.json$' | tr '\n' ' ' | sed 's/ $//')
          if [ -n "${files}" ]; then
            echo "Linting package.json files that have changed..."
            printf "${files}" | "${lint_package_json}" --split=" "
          else
            echo "No package.json files to lint."
          fi

      # Lint REPL help files...
      - name: 'Lint REPL help files'
        if: success() || failure()
        run: |
          # Determine root directory:
          root=$(git rev-parse --show-toplevel)

          # Define the path to a utility for linting REPL help files:
          lint_repl_help="${root}/lib/node_modules/@stdlib/_tools/lint/repl-txt/bin/cli"

          files=$(echo ${{ steps.changed-files.outputs.files }} | tr ' ' '\n' | grep 'repl\.txt$' | tr '\n' ' ' | sed 's/ $//')
          if [ -n "${files}" ]; then
            printf "${files}" | "${lint_repl_help}" --split=" "
          fi

      # Lint JavaScript files:
      - name: 'Lint JavaScript files'
        if: success() || failure()
        run: |
          # Determine root directory:
          root=$(git rev-parse --show-toplevel)

          # Define the path to ESLint configuration file for linting examples:
          eslint_examples_conf="${root}/etc/eslint/.eslintrc.examples.js"

          # Define the path to ESLint configuration file for linting tests:
          eslint_tests_conf="${root}/etc/eslint/.eslintrc.tests.js"

          # Define the path to ESLint configuration file for linting benchmarks:
          eslint_benchmarks_conf="${root}/etc/eslint/.eslintrc.benchmarks.js"

          # Lint JavaScript source files:
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep '\.js$' | grep -v -e '/examples' -e '/test' -e '/benchmark' -e '^dist/' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-javascript-files FILES="${files}"
          fi

          # Lint JavaScript command-line interfaces...
          file=$(echo ${{ steps.changed-files.outputs.files }} | tr ' ' '\n' | grep '\.js$' | grep -E '/bin/cli$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${file}" ]]; then
            make lint-javascript-files FILES="${file}"
          fi

          # Lint JavaScript example files:
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep '/examples/.*\.js$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-javascript-files FILES="${files}" ESLINT_CONF="${eslint_examples_conf}"
          fi

          # Lint JavaScript test files:
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep '/test/.*\.js$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-javascript-files FILES="${files}" ESLINT_CONF="${eslint_tests_conf}"
          fi

          # Lint JavaScript benchmark files:
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep '/benchmark/.*\.js$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-javascript-files FILES="${files}" ESLINT_CONF="${eslint_benchmarks_conf}"
          fi

      # Lint Python files:
      - name: 'Lint Python files'
        if: success() || failure()
        run: |
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep -E '\.py$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            # Install Python dependencies:
            make install-deps-python

            # Lint Python files:
            make lint-python-files FILES="${files}"
          fi

      # Check for R files:
      - name: 'Check for R files'
        if: success() || failure()
        id: check-r-files
        run: |
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep -E '\.R$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            # Add space-separated list of R files to output:
            echo "files=${files}" >> $GITHUB_OUTPUT
          else
            # Add empty string to output:
            echo "files=" >> $GITHUB_OUTPUT
          fi

      # Setup R:
      - name: 'Setup R'
        if: ( success() || failure() ) && steps.check-r-files.outputs.files != ''
        # Pin action to full length commit SHA corresponding to v2.6.4
        uses: r-lib/actions/setup-r@3e80f8fe880a36a9f35bf3e832f1bef8af687b69
        with:
          r-version: '3.5.3'

      # Lint R files:
      - name: 'Lint R files'
        if: ( success() || failure() ) && steps.check-r-files.outputs.files != ''
        run: |
          # Install R dependencies:
          make install-deps-r

          # Lint R files:
          make lint-r-files FILES="${{ steps.check-r-files.outputs.files }}"

      # Lint C files:
      - name: 'Lint C files'
        if: success() || failure()
        run: |
          # Determine root directory:
          root=$(git rev-parse --show-toplevel)

          # Define the path to cppcheck configuration file for linting examples:
          cppcheck_examples_suppressions_list="${root}/etc/cppcheck/suppressions.examples.txt"

          # Define the path to cppcheck configuration file for linting test fixtures:
          cppcheck_tests_fixtures_suppressions_list="${root}/etc/cppcheck/suppressions.tests_fixtures.txt"

          # Define the path to cppcheck configuration file for linting benchmarks:
          cppcheck_benchmarks_suppressions_list="${root}/etc/cppcheck/suppressions.benchmarks.txt"

          # Install cppcheck if C files have changed:
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep -E '\.c$|\.h$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make install-deps-cppcheck
          fi

          # Lint C source files...
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep -E '\.c$' | grep -v -e '/examples' -e '/test' -e '/benchmark' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-c-files FILES="${files}"
          fi

          # Lint C example files...
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep '/examples/.*\.c$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-c-files FILES="${files}" CPPCHECK_SUPPRESSIONS_LIST="${cppcheck_examples_suppressions_list}"
          fi

          # Lint C test fixtures files...
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep '/test/fixtures/.*\.c$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-c-files FILES="${files}" CPPCHECK_SUPPRESSIONS_LIST="${cppcheck_tests_fixtures_suppressions_list}"
          fi

          # Lint C benchmark files...
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep '/benchmark/.*\.c$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-c-files FILES="${files}" CPPCHECK_SUPPRESSIONS_LIST="${cppcheck_benchmarks_suppressions_list}"
          fi

      # Lint TypeScript declarations files:
      - name: 'Lint TypeScript declarations files'
        if: success() || failure()
        run: |
          files=$(echo "${{ steps.changed-files.outputs.files }}" | tr ' ' '\n' | grep -E '\.d\.ts$' | tr '\n' ' ' | sed 's/ $//')
          if [[ -n "${files}" ]]; then
            make lint-typescript-declarations-files FILES="${files}"
          fi

      # Lint license headers:
      - name: 'Lint license headers'
        if: success() || failure()
        run: |
          files=$(echo "${{ steps.changed-files.outputs.files }}")
          if [[ -n "${files}" ]]; then
            make lint-license-headers-files FILES="${files}"
          fi