#!/bin/bash


set -e
function helpexit() {
    echo Usage: $( basename "$0" ) -v source[/]  target
    echo Copy directory structure to a folder.
    echo 'This command always recurses to subdirectories!'
    echo '-v  verbose'
    exit
}

VERBOSE=""
for ((i=1; i<=${#@}; i++)) {
    [[ "${!i}" = "-h" ]] && helpexit
    [[ "${!i}" = "--help" ]] && helpexit
    [[ "${!i}" = "-v" ]] && { VERBOSE="-v"; continue; }
    [[ -z "$SRC" ]] && { SRC="${!i}"; continue; }
    [[ -z "$TGT" ]] && { TGT="${!i}"; continue; }
    echo Too many arguments
    exit 1
}

is_subfolder=1
if [[ "${SRC: -1}" = "/" ]]; then
  is_subfolder=0
fi

src_abs=$( realpath "$SRC" )
tgt_abs=$( realpath "$TGT" )
src_base=$( basename "$src_abs" )

if [[ $is_subfolder -eq 1 ]]; then
  tgt_abs+="/$src_base"
fi

find "$SRC" -mindepth 1 -type d -printf "$tgt_abs/%P\0" | while read -d $'\0' file; do
  mkdir -p $VERBOSE "$file"
done