SWDEV-123456 - add clang auto-formatting (#255)

.github/hooks/clang-format-check.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+RANGE=""
+
+while [[ $# -gt 0 ]]; do
+  echo $1
+  echo $2
+  case "$1" in
+  --range)
+    RANGE="$2"
+    shift 2
+    ;;
+  *)
+    echo "Unknown arg $1" >&2
+    exit 64
+    ;;
+  esac
+done
+
+regex='\.(c|cc|cpp|cxx|h|hh|hpp|hxx)$'
+
+if [[ -n $RANGE ]]; then
+  files=$(git diff --name-only "$RANGE" | grep -E "$regex" || true)
+else
+  files=$(git diff --cached --name-only --diff-filter=ACMR | grep -E "$regex" || true)
+fi
+echo "Checking $files"
+[[ -z $files ]] && exit 0
+
+clang_bin="${CLANG_FORMAT:-clang-format}"
+if ! command -v "$clang_bin" >/dev/null 2>&1; then
+  if [[ -x "/c/Program Files/LLVM/bin/clang-format.exe" ]]; then
+    clang_bin="/c/Program Files/LLVM/bin/clang-format.exe"
+  fi
+fi
+
+"$clang_bin" -style=file --dry-run -fallback-style=none -n -Werror $files

.github/hooks/pre-commit

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+exec "$(git rev-parse --show-toplevel)/.github/hooks/clang-format-check.sh"

.github/workflows/clang-format.yml

@@ -0,0 +1,22 @@
+name: Clang format check
+
+on:
+  push:
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Install clang-format
+        run: |
+          sudo apt update && sudo apt install -y clang-format
+
+      - name: Run clang-format-check
+        id: clang-format
+        run: |
+          chmod +x .github/hooks/clang-format-check.sh
+          ./.github/hooks/clang-format-check.sh --range "${{ github.event.before }}..${{ github.sha }}"