function filtCodeFile()
{
    filename="$1"
    filepath="$2/$1"
    blackList="Pods"
    if [[ $filepath =~ $blackList ]]; then
        return 1
    fi
    if [ "${filename##*.}" = "h" -o "${filename##*.}" == "m" ]; then
        if [ ! -z "`grep "MIT License" $filepath`" ]; then
            echo "[$filepath] aleady has license describe."
            #test
        else
            echo "/* " > ./copy_license_file.txt
            cat "./LICENSE" >> ./copy_license_file.txt
            echo " */" >> ./copy_license_file.txt
            cat "$filepath" >> ./copy_license_file.txt
            mv ./copy_license_file.txt $filepath
            echo "[$filepath] add license finish!"
        fi
    fi
}

function traversingFiles()
{
    #1st param, the dir name
    for file in `ls $1`;
    do
        if [ -d "$1/$file" ]; then
            #filtCodeFile $file $1
            traversingFiles "$1/$file" "$1"
        else
            filtCodeFile $file $1
        fi
    done
    rm -f ./copy_license_file.txt
}

traversingFiles "."