Enhance restyle-diff.sh with commit and push options (project-chip#71805)

* Enhance restyle-diff.sh to add -c and -u flags

* Address bot review comments regarding variable expansion and initialization

* Restyled by shellharden

* Add help flag and usage text to restyle-diff.sh

* Restyled by shfmt

Author: soares-sergio

scripts/helpers/restyle-diff.sh

@@ -21,11 +21,25 @@
 #  you've written is kosher to CI
 #
 # Usage:
-#  restyle-diff.sh [-d] [-p] [ref]
+#  restyle-diff.sh [-d] [-p] [-c] [-u] [-h] [ref]
 #
 # if unspecified, ref defaults to upstream/master (or master)
 # -d enables debug logging for Restyle CLI
 # -p pull restyler Docker images before running (default: skip pull, reuse cached images)
+# -c explicitly pass --commit to restyle CLI to generate commits per tool
+# -u automatically push resulting commits using 'git push'
+# -h show this help message
+
+show_help() {
+    echo "Usage: restyle-diff.sh [-d] [-p] [-c] [-u] [-h] [ref]"
+    echo
+    echo "  [ref]  Base reference for restyle (defaults to upstream/master or master)"
+    echo "  -d     Enable debug logging for Restyle CLI"
+    echo "  -p     Pull restyler Docker images before running"
+    echo "  -c     Explicitly pass --commit to restyle CLI to generate commits per tool"
+    echo "  -u     Automatically push resulting commits using 'git push'"
+    echo "  -h     Show this help message"
+}
 #
 
 here=${0%/*}
@@ -45,7 +59,7 @@ restyle-paths() {
     else
         echo "[restyle-diff.sh] Please wait, Restyling files (using cached images; pass -p to pull updates)"
     fi
-    restyle --config-file=.restyled.yaml "$@"
+    restyle --config-file=.restyled.yaml "${COMMIT_FLAG:+"$COMMIT_FLAG"}" "$@"
 
     # warn if restyle left any files owned by root (which means older restyle-CLI is being used)
     root_owned=$(find "$@" -maxdepth 0 -user 0 2>/dev/null || true)
@@ -125,6 +139,8 @@ export -f restyle-paths
 # config bumps a tag. When that happens, Restyle CLI's `docker run --pull never` fails with a "No such image" error;
 # if you see that error, re-run this script with -p to fetch the new image.
 export PULL=False
+export PUSH=False
+export COMMIT_FLAG=""
 
 while [[ $# -gt 0 ]]; do
     case "$1" in
@@ -136,6 +152,18 @@ while [[ $# -gt 0 ]]; do
             export PULL=True
             shift
             ;;
+        -c)
+            export COMMIT_FLAG="--commit"
+            shift
+            ;;
+        -u)
+            export PUSH=True
+            shift
+            ;;
+        -h | --help)
+            show_help
+            exit 0
+            ;;
         *)
             ref="$1"
             shift
@@ -153,3 +181,8 @@ paths=$(git diff --ignore-submodules --name-only --merge-base "$ref")
 ensure_restyle_installed
 
 echo "$paths" | xargs -n "$MAX_ARGS" "$BASH" -c 'restyle-paths "$@"' -
+
+if [[ "$PUSH" == "True" ]]; then
+    echo "[restyle-diff.sh] Pushing changes..."
+    git push
+fi