[ci] Check cmake-format

Author: K-ballo

.cmake-format.yml

@@ -0,0 +1,28 @@
+format:
+  line_width: 80
+  tab_size: 4
+  use_tabchars: false
+
+  # Command formatting
+  command_case: lower
+  disable_paren_padding: true
+
+  # Indentation
+  continuation_indent_width: 4
+  dangle_parens: false
+
+  # Lists / wrapping
+  max_sublist_length: 3
+  tight_list_bracket: true
+
+  # Comments
+  comment_follows_code: false
+  comment_indent: 0
+
+  # Blank lines
+  max_empty_lines: 2
+
+  # Misc
+  split_before_named_args: false
+  split_before_variadic_args: false
+  split_before_bracket: false

.github/workflows/format.yml

@@ -19,9 +19,29 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v5
 
+      # clang-format
       - name: Run clang-format check
         uses: jidicula/clang-format-action@v4.16.0
         with:
           clang-format-version: "22"
           check-path: "."
           exclude-regex: 'test/catch\.hpp'
+          
+      # cmake-format
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: '3.x'
+
+      - name: Install cmakelang
+        run: pip install cmakelang pyyaml
+
+      - name: Run cmake-format check
+        run: |
+          find . \( -name "CMakeLists.txt" -o -name "*.cmake" \) -print0 | while IFS= read -r -d '' file; do
+            if ! cmp -s "$file" <(cmake-format "$file"); then
+              echo "Misformatted: $file"
+              git diff --no-index --color "$file" <(cmake-format "$file")
+              echo
+            fi
+          done