import os
import sys
import argparse

__author__ = 'aolo2'

parser = argparse.ArgumentParser()
parser.add_argument('-d', help='List directories only.', action="store_true")
parser.add_argument('-o', help='Send output to FILENAME', type=str)
args = parser.parse_args()


def visit(path, reclvl):
    recbac = reclvl
    dirlist = ""

    try:
        dirlist = os.listdir(path)
    except OSError:
        print('Folder is not a folder')

    for name in dirlist:
        if name[0] != '.':
            if os.path.isdir(name):
                reclvl += 1

                for i in range(reclvl - 1):
                    sys.stdout.write('\t')

                print('|' + name + '|')
                visit(path + '/' + name, reclvl)

            else:
                reclvl = recbac
                if not args.d:
                    for i in range(reclvl):
                        sys.stdout.write('\t')
                    print('|-' + name)


start = os.getcwd()
visit(start, 0)