#!/bin/bash

VERSION="20190214"

function helpexit() {
    BS=$( basename "$0" )
    echo "Diff the filenames and sizes in two folders"
    echo "Usage: $BS [-v] folder1 folder2"
    echo "  -v    view in vimdiff"

    exit
}
function _tree() {
   tree -s -v "$1"
}

VIMDIFF=0
FOLDERS=( )
for ((i=1; i<=${#@}; i++)) {
    [[ "${!i}" = "-h" ]] && helpexit
    [[ "${!i}" = "--help" ]] && helpexit
    [[ "${!i}" = "-v" ]] && { VIMDIFF=1; continue; }
    FOLDERS+=( "${!i}" )
}
[[ ${#FOLDERS[@]} -eq 2 ]] || helpexit

[[ "$VIMDIFF" -eq 1 ]] && {
    vimdiff <( _tree "${FOLDERS[0]}" ) <( _tree "${FOLDERS[1]}" )
} || {
    diff -y <( _tree "${FOLDERS[0]}" ) <( _tree "${FOLDERS[1]}" ) | \
      HB_RULES='"|.*" "$c" ".*<" "$r" ">.*" "$g"' highbeam
}