count_sloc.sh

source_dirs=(dir1 dir2 dir3)
total=0

root_dir=$(pwd)

for dir in "${source_dirs[@]}"; do
    full_dir="$root_dir/$dir"
    cd $full_dir
    
    cpp_lines=$(find . -name '*.cpp' | xargs -I {} cat {} | wc -l)
    hpp_lines=$(find . -name '*.hpp' | xargs -I {} cat {} | wc -l)
    
    dir_total=$((cpp_lines + hpp_lines))
    echo "$full_dir: $dir_total lines"
    
    total=$((total + cpp_lines + hpp_lines))
    
    cd $root_dir
done

echo ""
echo "Total: $total lines"

Simple bash script that will iterate over a list of directories and count up how many lines of code are in the source files with the provided extensions (.cpp and .hpp in this case). Very slow.