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from datetime import date, datetime
from base64 import b64encode
from string import ascii_letters as letters, digits
from sys import argv
from os import environ as env
from os.path import join, dirname, expanduser
from itertools import product
import json
import logging
import re
_LOGGER = logging.getLogger(__name__)
def read_config():
"""Read config from file."""
for directory, filename in product(
[
dirname(argv[0]),
expanduser("~"),
env.get("XDG_CONFIG_HOME", join(expanduser("~"), ".config")),
],
["voc.conf", ".voc.conf"],
):
try:
config = join(directory, filename)
_LOGGER.debug("checking for config file %s", config)
with open(config) as config:
return dict(
x.split(": ")
for x in config.read().strip().splitlines()
if not x.startswith("#")
)
except OSError:
continue
return {}
def obj_parser(obj):
"""Parse datetime."""
for key, val in obj.items():
try:
obj[key] = datetime.strptime(val, "%Y-%m-%dT%H:%M:%S%z")
except (TypeError, ValueError):
pass
return obj
def json_serialize(obj):
"""JSON serializer for objects not serializable by default json code"""
if isinstance(obj, (datetime, date)):
return obj.isoformat()
raise TypeError("Type %s not serializable" % type(obj))
def json_loads(s):
return json.loads(s, object_hook=obj_parser)
def find_path(src, path):
"""Simple navigation of a hierarchical dict structure using
XPATH-like syntax.
>>> find_path(dict(a=1), 'a')
1
>>> find_path(dict(a=1), '')
{'a': 1}
>>> find_path(dict(a=None), 'a')
>>> find_path(dict(a=1), 'b')
Traceback (most recent call last):
...
KeyError: 'b'
>>> find_path(dict(a=dict(b=1)), 'a.b')
1
>>> find_path(dict(a=dict(b=1)), 'a')
{'b': 1}
>>> find_path(dict(a=dict(b=1)), 'a.c')
Traceback (most recent call last):
...
KeyError: 'c'
"""
if not path:
return src
if isinstance(path, str):
path = path.split(".")
return find_path(src[path[0]], path[1:])
def is_valid_path(src, path):
"""
>>> is_valid_path(dict(a=1), 'a')
True
>>> is_valid_path(dict(a=1), '')
True
>>> is_valid_path(dict(a=1), None)
True
>>> is_valid_path(dict(a=1), 'b')
False
"""
try:
find_path(src, path)
return True
except KeyError:
return False
def owntracks_encrypt(msg, key):
try:
from libnacl import crypto_secretbox_KEYBYTES as keylen
from libnacl.secret import SecretBox as secret
key = key.encode("utf-8")
key = key[:keylen]
key = key.ljust(keylen, b"\0")
msg = msg.encode("utf-8")
ciphertext = secret(key).encrypt(msg)
ciphertext = b64encode(ciphertext)
ciphertext = ciphertext.decode("ascii")
return ciphertext
except ImportError:
exit("libnacl missing")
except OSError:
exit("libsodium missing")
def camel2slug(s):
"""Convert camelCase to camel_case.
>>> camel2slug('fooBar')
'foo_bar'
"""
return re.sub("([A-Z])", "_\\1", s).lower().lstrip("_")
def whitelisted(s, whitelist=letters + digits, substitute=""):
"""
>>> whitelisted("ab/cd#ef(gh")
'abcdefgh'
>>> whitelisted("ab/cd#ef(gh", substitute="_")
'ab_cd_ef_gh'
>>> whitelisted("ab/cd#ef(gh", substitute='')
'abcdefgh'
"""
return "".join(c if c in whitelist else substitute for c in s)
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