ci: add shell_format check

.drone.yml

@@ -94,6 +94,12 @@ steps:
   commands:
     - ./tools/ci/static_analysis/cmake_format.sh
 
+- name: shell format
+  image: ci:latest
+  pull: if-not-exists
+  commands:
+    - ./tools/ci/static_analysis/shell_format.sh
+
 ---
 kind: pipeline
 type: docker 

tools/ci/static_analysis/shell_format.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+set -euo pipefail
+cd "$(git rev-parse --show-toplevel)/"
+
+has_fomatting_issues=0
+
+while IFS= read -r -d '' file; do
+    echo "Checking format for $file"
+
+    if ! shfmt -i 4 -ci -d "$file"; then
+        echo "❌ Formatting issue detected in $file"
+        has_fomatting_issues=1
+    fi
+done < <(find ./modules ./tools -name '*.sh' -print0)
+
+if [ "$has_fomatting_issues" -eq 0 ]; then
+    echo "✅ All files are properly formatted! Well done! ^~^"
+fi
+
+exit ${has_fomatting_issues}