clang-format wrapper for multifile ussage [cpp]

code_format.sh [recursive clang-format]

#!/bin/bash

# ------------------------------------------------------------
# Recursive cpp code formatter based on clang-format
# For base work there is you need to have .clang-format file
#
# USAGE code_format.sh [clang-format-options] [<file|dir> ...]
#
# clang-format-options passes through to clang-format
# ------------------------------------------------------------

# check if we have .clang-format
FILENAME=".clang-format"
if ! [[ -f "$FILENAME" ]]; then
    echo "Failed \".clang-format\" file does not exist"
    exit 1
fi

#get clang-format arguments
CLANG_FORMAT_ARGS=()
for var in "$@"
do
    if [[ $var == -* ]]; then
        CLANG_FORMAT_ARGS+=("$var")
    else
        break
    fi
done

if [[ 1 > $(($# - ${#CLANG_FORMAT_ARGS[@]})) ]]; then
    echo "Wrong arguments: code_format.sh [clang-format-options] [<file|dir> ...]"
    exit 1
fi

handle_file () {
    if [[ $1 == *.cpp ]] || [[ $1 == *.hpp ]] || \
	   [[ $1 == *.c   ]] || [[ $1 == *.h   ]] || \
	   [[ $1 == *.cc  ]] || [[ $1 == *.hh  ]] || \
	   [[ $1 == *.c++ ]] || [[ $1 == *.h++ ]] || \
	   [[ $1 == *.cxx ]] || [[ $1 == *.hxx ]] || \
	   [[ $1 == *.cp  ]] || [[ $1 == *.hp  ]] || \
	   [[ $1 == *.icc ]] || [[ $1 == *.inl ]]; then
        echo $'\n'"Formating file: $1";
        clang-format -i ${CLANG_FORMAT_ARGS[@]} $1 > /dev/null
        echo "File handled $1"$'\n';
    #else
        #echo "$1 has wrong extension.";
    fi
}

handle_dir () {
    for f in $(/usr/bin/find $1 -type f);
    do
        handle_file $f;
    done
}

#setup timer and start
START=$SECONDS
echo "Start formatting using \"clang-format ${CLANG_FORMAT_ARGS[@]}\""

#iterate over all input files and directories
for (( i=${#CLANG_FORMAT_ARGS[@]}; i <= $#; i++ ))
do
    PATH=${!i}
    if [ -f "${PATH}" ]; then
        handle_file ${PATH};
    else
    if [ -d "${PATH}" ]; then
        handle_dir ${PATH};
    else
        echo "${PATH} is not valid";
    fi
fi
done

echo "Formatting ended in $(( SECONDS - START )) sec."