#!/usr/bin/env python

import atexit
import os
import readline

xdg_cache_home = os.environ['XDG_CACHE_HOME']

if xdg_cache_home is None or xdg_cache_home == "":
    xdg_cache_home = os.path.join(os.path.expanduser("~"), ".cache")

python_cache_dir = os.path.join(xdg_cache_home, "python")
if not os.path.isdir(python_cache_dir):
    os.mkdir(python_cache_dir)

histfile = os.path.join(python_cache_dir, "history")

try:
    readline.read_history_file(histfile)
    readline.set_history_length(10000)
except FileNotFoundError:
    pass

atexit.register(readline.write_history_file, histfile)