github: workflows: Update compliance to match what upstream does

Downgrade ClangFormat errors to warnings.

Signed-off-by: Johan Hedberg <[email protected]>

.github/workflows/compliance.yml

@@ -57,19 +57,28 @@ jobs:
           exit 1;
         fi
 
+        warns=("ClangFormat")
         files=($($ZEPHYR_BASE/scripts/ci/check_compliance.py -l))
+
         for file in "${files[@]}"; do
           f="${file}.txt"
           if [[ -s $f ]]; then
-            errors=$(cat $f)
-            errors="${errors//'%'/'%25'}"
-            errors="${errors//$'\n'/'%0A'}"
-            errors="${errors//$'\r'/'%0D'}"
-            echo "::error file=${f}::$errors"
-            exit=1
+            results=$(cat $f)
+            results="${results//'%'/'%25'}"
+            results="${results//$'\n'/'%0A'}"
+            results="${results//$'\r'/'%0D'}"
+
+            if [[ "${warns[@]}" =~ "${file}" ]]; then
+              echo "::warning file=${f}::$results"
+            else
+              echo "::error file=${f}::$results"
+              exit=1
+            fi
           fi
         done
 
         if [ "${exit}" == "1" ]; then
+          echo "Compliance error, check for error messages in the \"Run Compliance Tests\" step"
+          echo "You can run this step locally with the ./scripts/ci/check_compliance.py script."
           exit 1;
         fi