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volia/core/env.py
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5fcaeae1e
New way to set en...
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import json
"""
This module aims to manage environement variables local to the application.
These variables are persitent and located in a json file.
"""
class Env(object):
"""Initialize with an persistent file (json)
You can access to environment variables using the brackets operators.
You can also check with the 'in' operator if a key is present among
the variables.
example code:
```
env = Env("myfile.json")
if "MyVariable" in env:
print(env["MyVariable"])
else:
env["MyVariable"] = "New value"
```
"""
def __init__(self, file: str):
self.__variables = {}
self.file = file
self.load()
@property
def variables(self):
return self.__variables
@property
def file(self):
return self.__file
@file.setter
def file(self, file):
self.__file = file
def set(self, key: str, value: str):
"""Modify an environment variable
Args:
key (str): [description]
value ([type]): [description]
"""
self.__variables[str]
self.save()
def get(self, key: str) -> str:
"""Get an environment variable.
Args:
key (str): [description]
Returns:
[str]: [description]
"""
return self.variables[key]
def __getitem__(self, key):
print(key)
return self.variables[key]
def __setitem__(self, key, value):
self.variables[key] = value
def __delitem__(self, key):
del self.variables[key]
def __contains__(self, key):
return key in self.variables
def load(self):
"""Load the variables from the json file.
"""
with open(self.file, "r") as f:
self.__variables = json.load(f)
def save(self):
"""Save the variables into the json file.
"""
with open(self.file, "w") as f:
json.dump(self.variables, f)
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