add format script

Author: Murmele

.github/workflows/tests.yml

@@ -41,3 +41,12 @@ jobs:
         cd build
         ctest --output-on-failure
 
+  format:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Test format
+      run: |
+        ./scripts/fmt.sh
+        git diff --exit-code
+

scripts/cl-fmt.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+# Variable that will hold the name of the clang-format command
+FMT=""
+
+FOLDERS=("src" "test")
+
+# Some distros just call it clang-format. Others (e.g. Ubuntu) are insistent
+# that the version number be part of the command. We prefer clang-format if
+# that's present, otherwise we check clang-format-13 
+for clangfmt in clang-format{,-13}; do
+    if which "$clangfmt" &>/dev/null; then
+        FMT="$clangfmt"
+        break
+    fi
+done
+
+# Check if we found a working clang-format
+if [ -z "$FMT" ]; then
+    echo "failed to find clang-format. Please install clang-format version 13 or above"
+    exit 1
+fi
+
+function format() {
+	# ignore getRSS.h file
+    for f in $(find $@ -name '*.h' ! -iname 'getRSS.h' -or -name '*.m' -or -name '*.mm' -or -name '*.c' -or -name '*.cpp'); do
+        echo "format ${f}";
+        ${FMT} -i ${f};
+    done
+
+    echo "~~~ $@ Done ~~~";
+}
+
+# Check all of the arguments first to make sure they're all directories
+for dir in ${FOLDERS[@]}; do
+    if [ ! -d "${dir}" ]; then
+        echo "${dir} is not a directory";
+    else
+        format ${dir};
+    fi
+done