From cacba11090298dad1d06d04f81d7a49b7bea4308 Mon Sep 17 00:00:00 2001
From: Xiaofeng Wang <wasphin@gmail.com>
Date: Fri, 24 Jun 2022 23:26:14 +0800
Subject: [PATCH] Add workflow action to validate BOM

---
 .github/workflows/style.yml | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 .github/workflows/style.yml

diff --git a/.github/workflows/style.yml b/.github/workflows/style.yml
new file mode 100644
index 00000000..361add93
--- /dev/null
+++ b/.github/workflows/style.yml
@@ -0,0 +1,27 @@
+name: style check
+
+on: [pull_request]
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          # with all history
+          fetch-depth: 0
+      - name: Validate BOM
+        run: |
+          ret=0
+          for i in $(git diff --name-only origin/${GITHUB_BASE_REF}...${GITHUB_SHA}); do
+            if [ -f ${i} ]; then
+              case ${i} in
+                *.c|*.cc|*.cpp|*.h)
+                  if file ${i} | grep -qv BOM; then
+                    echo "Missing BOM in ${i}" && ret=1;
+                  fi
+                  ;;
+              esac
+            fi
+          done
+          exit ${ret}