minetest/.github/workflows/whitespace_checks.yml

name: whitespace_checks

# Check whitespaces of the following file types
# Not checked: .lua, .yml, .properties, .conf, .java, .py, .svg, .gradle, .xml, ...
# (luacheck already checks .lua files)
on:
  push:
    paths:
      - '**.txt'
      - '**.md'
      - '**.[ch]'
      - '**.cpp'
      - '**.hpp'
      - '**.sh'
      - '**.cmake'
      - '**.glsl'
  pull_request:
    paths:
      - '**.txt'
      - '**.md'
      - '**.[ch]'
      - '**.cpp'
      - '**.hpp'
      - '**.sh'
      - '**.cmake'
      - '**.glsl'

jobs:
  trailing_whitespaces:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      # Line endings are already ensured by .gitattributes
      - name: Check trailing whitespaces
        run: if git ls-files | grep -E '\.txt$|\.md$|\.[ch]$|\.cpp$|\.hpp$|\.sh$|\.cmake$|\.glsl$' | xargs grep -n '\s$'; then echo -e "\033[0;31mFound trailing whitespace"; (exit 1); else (exit 0); fi

  tabs_lua_api_files:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      # Some files should not contain tabs
      - name: Check tabs in Lua API files
        run: if grep -n $'\t' doc/lua_api.md doc/client_lua_api.md; then echo -e "\033[0;31mFound tab in markdown file"; (exit 1); else (exit 0); fi