Add format check to CI tests

.github/workflows/ci.yml

@@ -10,6 +10,19 @@ on:
       - master
 
 jobs:
+clang-format-check:
+    runs-on: macos-11
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v3
+      - name: Install clang-format
+        run: |
+          brew install clang-format
+          clang-format --version
+      - name: Run clang format check
+        run: |
+          bash scripts/check-clang.sh
+          
   mac-os-build-clang:
     runs-on: macos-12
     env:

scripts/check-clang.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+if [[ -z $CLANG_FORMAT ]] ; then
+    CLANG_FORMAT=clang-format
+fi
+
+if NOT type $CLANG_FORMAT 2> /dev/null ; then
+    echo "No appropriate clang-format found."
+    exit 1
+fi
+
+FAIL=0
+SOURCE_FILES=`find src samples tst -type f \( -name '*.h' -o -name '*.c' \) -not -path "*/external/*"`
+echo "Performing clang format compliance check...."
+for i in $SOURCE_FILES
+do
+    $CLANG_FORMAT -output-replacements-xml $i | grep -c "<replacement " > /dev/null
+    if [ $? -ne 1 ]
+    then
+        echo "$i failed clang-format check."
+        FAIL=1
+    fi
+done
+
+if [ $FAIL -ne 1 ]; then
+        echo "Clang check passed for the project"
+fi
+
+exit $FAIL