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path: root/.github/workflows/check_misc.yml
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name: Miscellaneous checks
on: [push, pull_request]

concurrency:
  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}

jobs:
  checks:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Check if C-sources are US-ASCII
        run: |
          ! grep -r -n '[^	 -~]' *.[chy] include internal win32/*.[ch]
      - name: Check for trailing spaces
        run: |
          ! git grep -n '[	 ]$' '*.rb' '*.[chy]'
      - name: Check for header macros
        run: |
          ! for header in ruby/*.h; do \
            git grep -l -F -e $header -e HAVE_`echo $header | tr a-z./ A-Z__` -- . > /dev/null || echo $header
          done | grep -F .
        working-directory: include

      - uses: actions/cache@v3
        with:
          path: .downloaded-cache
          key: downloaded-cache-${{ github.sha }}
          restore-keys: |
            downloaded-cache

      - name: Download previous gems list
        run: |
          data=default_gems.json
          mkdir -p .downloaded-cache
          ln -s .downloaded-cache/$data .
          curl -O -R -z ./$data https://stdgems.org/$data

      - name: Make default gems list
        run: |
          #!ruby
          require 'rubygems'
          $:.unshift "lib"
          rgver = File.foreach("lib/rubygems.rb") do |line|
            break $1 if /^\s*VERSION\s*=\s*"([^"]+)"/ =~ line
          end
          gems = Dir.glob("{ext,lib}/**/*.gemspec").map do |f|
            spec = Gem::Specification.load(f)
            "#{spec.name} #{spec.version}"
          end.sort
          File.open("gems/default_gems", "w") do |f|
            f.puts "RubyGems #{rgver}"
            f.puts gems
          end
        shell: ruby --disable=gems {0}

      - name: Maintain updated gems list in NEWS
        run: |
          #!ruby
          require 'json'
          news = File.read("NEWS.md")
          prev = news[/since the \*+(\d+\.\d+\.\d+)\*+/, 1]
          prevs = [prev, prev.sub(/\.\d+\z/, '')]
          %W[default].each do |type|
            last = JSON.parse(File.read("#{type}_gems.json"))['gems'].filter_map do |g|
              v = g['versions'].values_at(*prevs).compact.first
              g = g['gem']
              g = 'RubyGems' if g == 'rubygems'
              [g, v] if v
            end.to_h
            changed = File.foreach("gems/#{type}_gems").filter_map do |l|
              next if l.start_with?("#")
              g, v = l.split(" ", 3)
              [g, v] unless last[g] == v
            end
            news.sub!(/^\*( +)The following #{type} gems? are updated\.\n\K(?: \1\* .*\n)*/) do
              mark = "#{$1} * "
              changed.map {|g, v|"#{mark}#{g} #{v}\n"}.join("")
            end or next
            File.write("NEWS.md", news)
          end
        shell: ruby {0}

      - name: Check diffs
        id: diff
        run: |
          git diff --color --no-ext-diff --ignore-submodules --exit-code NEWS.md
        continue-on-error: true
      - name: Commit
        run: |
          git pull --ff-only origin ${GITHUB_REF#refs/heads/}
          git commit --message="Update default gems list at ${GITHUB_SHA:0:30} [ci skip]" NEWS.md
          git push origin ${GITHUB_REF#refs/heads/}
        env:
          EMAIL: svn-admin@ruby-lang.org
          GIT_AUTHOR_NAME: git
          GIT_COMMITTER_NAME: git
        if: ${{ github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull') && steps.diff.outcome == 'failure' }}