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gallery-dl/gallery_dl/config.py
2015-10-07 00:58:43 +02:00

101 lines
2.6 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2015 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
"""Global configuration module"""
import sys
import json
import os.path
import platform
# --------------------------------------------------------------------
# public interface
def load(*files):
"""Load JSON configuration files"""
configfiles = files or _default_configs
for conf in configfiles:
try:
path = os.path.expanduser(conf)
with open(path) as file:
confdict = json.load(file)
_config.update(confdict)
except FileNotFoundError:
continue
except json.decoder.JSONDecodeError as exception:
print("Error while loading '", path, "':", sep="", file=sys.stderr)
print(exception, file=sys.stderr)
def clear():
"""Reset configuration to en empty state"""
globals()["_config"] = {}
def get(keys, default=None):
"""Get the value of property 'key' or a default-value if it doenst exist"""
conf = _config
try:
for k in keys:
conf = conf[k]
return conf
except (KeyError, AttributeError):
return default
def interpolate(keys, default=None):
"""Interpolate the value of 'key'"""
conf = _config
try:
for k in keys:
default = conf.get(keys[-1], default)
conf = conf[k]
return conf
except (KeyError, AttributeError):
return default
def set(keys, value):
"""Set the value of property 'key' for this session"""
conf = _config
for k in keys[:-1]:
try:
conf = conf[k]
except KeyError:
temp = {}
conf[k] = temp
conf = temp
conf[keys[-1]] = value
def setdefault(keys, value):
"""Set the value of property 'key' if it doesn't exist"""
conf = _config
for k in keys[:-1]:
try:
conf = conf[k]
except KeyError:
temp = {}
conf[k] = temp
conf = temp
return conf.setdefault(keys[-1], value)
# --------------------------------------------------------------------
# internals
_config = {}
if platform.system() == "Windows":
_default_configs = [
r"~\.config\gallery-dl.conf",
r"~\.gallery-dl.conf",
]
else:
_default_configs = [
"/etc/gallery-dl.conf",
"~/.config/gallery/config.json",
"~/.config/gallery-dl.conf",
"~/.gallery-dl.conf",
]