clang formatter script file

Author: Daniel Tobon

.gitignore

@@ -42,5 +42,4 @@ docker/
 .vscode/
 
 # dev
-clang-format-all.sh
 display_pcl.sh

clang-format-all.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+# By Gabriel Staples
+# For documentation on this file, see my answer here:
+# [my answer] How to call clang-format over a cpp project folder?:
+# https://stackoverflow.com/a/65988393/4561887
+
+# See my ans: https://stackoverflow.com/a/60157372/4561887
+FULL_PATH_TO_SCRIPT="$(realpath "$0")"
+SCRIPT_DIRECTORY="$(dirname "$FULL_PATH_TO_SCRIPT")"
+
+RETURN_CODE_SUCCESS=0
+RETURN_CODE_ERROR=1
+
+# Find all files in SCRIPT_DIRECTORY with one of these extensions
+FILE_LIST="$(find "$SCRIPT_DIRECTORY" -not \( -path "*/external/*" -prune \) -not \( -path "*/build/*" -prune \) \
+| grep -E ".*\.(ino|cpp|c|h|hpp|hh)$")"
+# echo "\"$FILE_LIST\"" # debugging
+# split into an array; see my ans: https://stackoverflow.com/a/71575442/4561887
+# mapfile -t FILE_LIST_ARRAY <<< "$FILE_LIST"
+IFS=$'\n' read -r -d '' -a FILE_LIST_ARRAY <<< "$FILE_LIST"
+
+num_files="${#FILE_LIST_ARRAY[@]}"
+echo -e "$num_files files found to format:"
+if [ "$num_files" -eq 0 ]; then
+    echo "Nothing to do."
+    exit $RETURN_CODE_SUCCESS
+fi
+
+# print the list of all files
+for i in "${!FILE_LIST_ARRAY[@]}"; do
+    file="${FILE_LIST_ARRAY["$i"]}"
+    printf "  %2i: %s\n" $((i + 1)) "$file"
+done
+echo ""
+
+format_files="false"
+# See: https://stackoverflow.com/a/226724/4561887
+read -p "Do you wish to auto-format all of these files [y/N] " user_response
+case "$user_response" in
+    [Yy]* ) format_files="true"
+esac
+
+if [ "$format_files" = "false" ]; then
+    echo "Aborting."
+    exit $RETURN_CODE_SUCCESS
+fi
+
+# Format each file.
+clang-format --verbose -i --style=file "${FILE_LIST_ARRAY[@]}"