ci: add style.yml

.github/workflows/style.yml

@@ -0,0 +1,72 @@
+name: Check Style
+on:
+  push:
+    branches:
+    - main
+    - develop
+  pull_request:
+    branches-ignore:
+    - documentation
+  workflow_dispatch:
+
+env:
+  FIND_CMAKE_FILES_CMD: "find '${{ github.workspace }}' -name 'CMakeLists.txt' -o -name '*.cmake'"
+
+jobs:
+  Format:
+    runs-on: ubuntu-22.04
+    env:
+      DEFAULT: '\033[0m'
+      RED: '\033[0;31m'
+      GREEN: '\033[0;32m'
+      FORMAT_PATCH: '${{ github.workspace }}/format.patch'
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+    - name: Install Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '>=3.8'
+    - name: Install required tools
+      run: python -m pip install cmake-format
+    - name: Format CMake
+      run: cmake-format -i $(eval "${FIND_CMAKE_FILES_CMD}")
+    - name: Check if patching is required
+      id: patch-required
+      run: |
+        git -C '${{ github.workspace }}' diff --patch-with-raw > "${FORMAT_PATCH}"
+        test -s "${FORMAT_PATCH}" && {
+          printf "${RED}The source code does not meet the format requirements. \
+        Please, apply the patch (see artifacts).${DEFAULT}\n"
+
+          printf "${RED}Note that the result of the formatting might depend on \
+        the versions of the formatting tools. In this project, whatever \
+        formatting this CI job produces if the correct one. If it expects you \
+        to reformat parts of the source code that you did not modify, do so in \
+        a separate commit, which must not be squashed, and list the commit in \
+        the '.git-blame-ignore-revs' file.${DEFAULT}\n"
+
+          exit 1
+        } || {
+          printf "${GREEN}The source code meets the format requirements.${DEFAULT}\n"
+          rm -rf "${FORMAT_PATCH}"
+        }
+    - name: Upload the patch file
+      if: always() && steps.patch-required.outcome == 'failure'
+      uses: actions/upload-artifact@v4
+      with:
+        name: format-patch
+        path: ${{ env.FORMAT_PATCH }}
+  Lint:
+    runs-on: ubuntu-22.04
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+    - name: Install Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '>=3.8'
+    - name: Install required tools
+      run: python -m pip install cmake-format
+    - name: Lint CMake
+      run: cmake-lint $(eval "${FIND_CMAKE_FILES_CMD}")