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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# The code is based on
# https://github.com/open-mmlab/mmcv/blob/master/mmcv/utils/config.py
# Copyright (c) OpenMMLab.
import os.path as osp
import shutil
import sys
import tempfile
from importlib import import_module
from addict import Dict
class ConfigDict(Dict):
def __missing__(self, name):
raise KeyError(name)
def __getattr__(self, name):
try:
value = super(ConfigDict, self).__getattr__(name)
except KeyError:
ex = AttributeError("'{}' object has no attribute '{}'".format(
self.__class__.__name__, name))
except Exception as e:
ex = e
else:
return value
raise ex
class Config(object):
@staticmethod
def _file2dict(filename):
filename = str(filename)
if filename.endswith('.py'):
with tempfile.TemporaryDirectory() as temp_config_dir:
shutil.copyfile(filename,
osp.join(temp_config_dir, '_tempconfig.py'))
sys.path.insert(0, temp_config_dir)
mod = import_module('_tempconfig')
sys.path.pop(0)
cfg_dict = {
name: value
for name, value in mod.__dict__.items()
if not name.startswith('__')
}
# delete imported module
del sys.modules['_tempconfig']
else:
raise IOError('Only .py type are supported now!')
cfg_text = filename + '\n'
with open(filename, 'r') as f:
cfg_text += f.read()
return cfg_dict, cfg_text
@staticmethod
def fromfile(filename):
cfg_dict, cfg_text = Config._file2dict(filename)
return Config(cfg_dict, cfg_text=cfg_text, filename=filename)
def __init__(self, cfg_dict=None, cfg_text=None, filename=None):
if cfg_dict is None:
cfg_dict = dict()
elif not isinstance(cfg_dict, dict):
raise TypeError('cfg_dict must be a dict, but got {}'.format(
type(cfg_dict)))
super(Config, self).__setattr__('_cfg_dict', ConfigDict(cfg_dict))
super(Config, self).__setattr__('_filename', filename)
if cfg_text:
text = cfg_text
elif filename:
with open(filename, 'r') as f:
text = f.read()
else:
text = ''
super(Config, self).__setattr__('_text', text)
@property
def filename(self):
return self._filename
@property
def text(self):
return self._text
def __repr__(self):
return 'Config (path: {}): {}'.format(self.filename,
self._cfg_dict.__repr__())
def __getattr__(self, name):
return getattr(self._cfg_dict, name)
def __setattr__(self, name, value):
if isinstance(value, dict):
value = ConfigDict(value)
self._cfg_dict.__setattr__(name, value)
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