git-batch/gitbatch/utils.py

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#!/usr/bin/env python3
"""Global utility methods and classes."""
import os
from distutils.util import strtobool
def normalize_path(path):
if path:
return os.path.abspath(os.path.expanduser(os.path.expandvars(path)))
return None
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def to_bool(string):
return bool(strtobool(str(string)))
class Singleton(type):
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"""Meta singleton class."""
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_instances = {}
def __call__(cls, *args, **kwargs):
if cls not in cls._instances:
cls._instances[cls] = super().__call__(*args, **kwargs)
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return cls._instances[cls]